Technical Field
[0001] The present invention relates to an empty shooting prevention device for an electric
gun.
Background Art
[0002] In a so-called electric gun which uses a rotation of a motor to drive a piston in
a cylinder, air in the cylinder is injected by a driving force of the piston to fire
a bullet, and a trigger turns on an electric switch to drive the motor.
[0003] Therefore, while the trigger is kept being pulled, a state where the electric switch
is turned on is maintained, and thus, the motor continues to be driven. Therefore,
a movement of the piston does not stop, and even in a case where there is no bullet
in a magazine, the air in the cylinder continues to be injected, and thus, so-called
empty shooting is continued.
[0004] Therefore, Japanese Patent Application Laid-Open No.
2010-25501 filed by the present applicant discloses a mechanical power supply stopping device
in an electric gun. The device is a device for cutting off a circuit of a drive portion
for firing a bullet to stop power supply when there is no bullet in a bullet supply
path leading to a bullet loading section in a rear section of a gun cavity. The device
is configured to include a ball pushing member which is movably disposed in a bullet
supply path and is biased to feed the bullet to the bullet loading section, a follower
member which engages at an end portion with a portion of the ball pushing member side
and is interlocked with a movement of the ball pushing member, a cut-off member which
is movable from a position at the time of the power supply to a position at the time
of power cut-off according to a movement of the follower member, engages with a tappet
member in a process of moving to the position at the time of the power cut-off, and
turns off a switch according to a movement of the tappet member, the tappet member
which includes a portion which moves rearward according to a movement of a piston
of the drive portion to open a bullet supply port of the bullet supply path leading
to the bullet loading section and moves the cut-off member by a biasing force in a
direction in which the bullet supply port is closed, and the switch which is moved
by the engagement with the cut-off member to open a contact and closes the contact
by a reset operation.
[0005] However, engine portions such as a cylinder, a piston, and a gear for driving the
piston in the electric gun are disposed in a predetermined housing and are unitized.
The unitized portion is referred to as a mechanical box, and it is necessary to incorporate
the above-described devices into the unitized mechanical box.
[0006] In addition, in the related art, there is no space in the mechanical box for incorporating
the above-described devices. Accordingly, the mechanical box itself should be newly
manufactured. Moreover, even when mechanical box is newly manufactured, according
to a type of the electric gun, there may not be enough space in the mechanical box
to accommodate the above-described devices, and it is not practical to apply the above-described
mechanical power supply stopping device to all mechanical boxes.
Citation List
Patent Literature
[0007] [PTL 1] Japanese Patent Application Laid-Open No.
2010-25501
Summary of Invention
Technical Problem
[0008] The present invention is made in view of the above-described circumstances, and an
object thereof is to provide an empty shooting prevention device capable of stopping
a rotation of a motor in a case where there is no bullet without changing a mechanical
box of the related art.
Solution to problem
[0009] According to a first aspect, there is provided an empty shooting prevention device
including: a switch which is disposed in series with a contact which comes into contact
with the switch to supply power to a motor when a trigger is pulled; and a power supply
stop portion which disconnects the switch to prevent power supply to the motor in
response to an operation of a bullet detection device which detects that there is
no bullet. Moreover, note that the disconnecting of the switch means to turn off the
switch or does not supply power. The same applies hereinafter.
[0010] According to a second aspect, in the empty shooting prevention device of the first
aspect, the power supply stop portion includes a detection receiving portion which
receives the operation of the bullet detection device which detects that there is
no bullet, a piston interlocking portion which is interlocked with a movement of a
piston driven by the motor, and a switch disconnecting portion which separates a contact
of the switch, in which the detection receiving portion engages with the piston interlocking
portion, and thus, the piston interlocking portion operates the switch disconnecting
portion, and the switch disconnecting portion disconnects the switch.
[0011] According to a third aspect, in the empty shooting prevention device of the first
or second aspect, the contact which comes into contact with the switch to supply power
to the motor when the trigger is pulled is provided inside a housing, and both the
switch and the power supply stop portion are provided outside the housing.
[0012] According to a fourth aspect, there is provided an electric gun including: the empty
shooting prevention device according to the first to third aspects. Advantageous Effects
of Invention
[0013] According to the present invention, it is possible to provide an empty shooting prevention
device capable of stopping a rotation of a motor in a case where there is no bullet
without changing a mechanical box of the related art.
Brief Description of Drawings
[0014]
Fig. 1 is a side view of an electric gun in a state where a muzzle faces left.
Fig. 2 is a side view of the electric gun with a muzzle facing right.
Fig. 3 is a left-side view of a magazine portion having a plurality of bullets in
a magazine.
Fig. 4 is a left-side view of the magazine portion in a state where there is no bullet
in the magazine.
Fig. 5A is a left-side view of the magazine portion in a state where there is no bullet
in the magazine and an empty shooting prevention function stopping device is moved
in a -x direction.
Fig. 5B is a right-side view of Fig. 5A.
Fig. 6 is a side view of the electric gun in a state where the muzzle faces left.
Fig. 7A is an enlarged view of Fig. 6.
Fig. 7B is a conceptual view of Fig. 7A.
Fig. 8A is an enlarged bottom view of Fig. 6.
Fig. 8B is a conceptual view of Fig. 8A.
Fig. 9 is an enlarged side view of the electric gun in the state where the muzzle
faces right.
Fig. 10A is an enlarged bottom view of the electric gun with the muzzle facing left
in a state where power supply to the motor is stopped.
Fig. 10B is a conceptual view of Fig. 10A.
Fig. 11 is a side view of the electric gun with the muzzle facing right in the state
where the power supply to the motor is stopped.
Fig. 12 is a side view of the electric gun with the muzzle facing right in a state
where the power is supplied to the motor again.
Fig. 13 is an enlarged bottom view of the electric gun with the muzzle facing left
in the state where the power is supplied to the motor again.
Description of Embodiments
[0015] An electric gun 10 having an empty shooting prevention device 200 in the present
embodiment will be described. In the electric gun 10, separately from a first contact
21 which comes into contact with a trigger 20 described later to supply power when
the trigger 20 is pulled, a switch 201 is provided outside a housing 16 in a mechanical
box described later, a power supply stop portion 202 is disposed to prevent so-called
empty shooting when there is no bullet G in a magazine portion 500, and the power
supply stop portion 202 disconnects the switch 201 (refer to Figs. 1 and 2).
[0016] The first contact 21 and the switch 201 are connected to each other in series by
a wire S. When power is supplied to any one of the first contact 21 and the switch
201, a bullet G is fired. Moreover, in a case where there is no bullet G, it is possible
to prevent the empty shooting by one or both of the power supply stop portion 202
stopping power supply to the switch 201 and returning the pulled trigger 20 (refer
to Figs. 1 and 2).
[0017] First, a structure of an engine portion 15 for firing the bullet G in the electric
gun 10 will be described. The engine portion 15 is disposed in the housing 16. Moreover,
the engine portion 15 includes the trigger 20, the first contact 21, a motor 22, a
motor gear 23, a bevel gear 24, a gear 25, a sector gear 26, a piston 30, a rack portion
31 of the piston 30, and a spring 32 which biases the piston 30 in a -x direction.
Here, the housing 16 having the engine portion 15 may be referred to the mechanical
box.
[0018] When a user (not illustrated) pulls the trigger 20, the first contact 21 comes into
contact with the trigger 20 and electricity from the battery 100 flows to the motor
22. Therefore, the motor 22 rotates. The motor gear 23 disposed in an output shaft
of the motor 22 is rotated by the rotation of the motor 22, the bevel gear 24 meshing
with the motor gear 23 is rotated, the gear 25 meshing with the bevel gear 24 is rotated,
and the sector gear 26 meshing with the gear 25 is rotated.
[0019] When the sector gear 26 meshes with the rack portion 31 of the piston 30, the piston
30 moves in a +x direction. Accordingly, the piston 30 compresses the spring 32.
[0020] The sector gear 26 has a toothless portion which does not partially include gear
teeth. Accordingly, when the toothless portion of the sector gear 26 rotates to a
position facing the rack portion 31, the rack portion 31 and the sector gear 26 disengage
from each other, and a force of the spring 32 to return to a natural length of the
spring 32 causes the piston 30 disposed in the cylinder 40 to rapidly move in the
-x direction. Therefore, the air in the cylinder 40 is injected to the bullet G which
is disposed in advance at a tip of a nozzle 33, and the bullet G is fired by the air.
[0021] Further, the electric gun 10 includes a recoil shock generating mechanism 50 for
generating a so-called recoil shock for simulating an impact generated by a reaction
at the time of firing a bullet in an actual gun. Therefore, this will also be described.
The recoil shock generating mechanism 50 includes a piston engagement portion 51 of
the piston 30 and a recoil weight 52 which engages with the piston engagement portion
51. The recoil weight 52 is biased in the -x direction by a recoil spring 53. Preferably,
the recoil weight 52 has a predetermined mass in order to simulate the impact.
[0022] As described above, the piston 30 disposed in the cylinder 40 rapidly moves in the
-x direction, and the air in the cylinder 40 is injected to the bullet G which is
disposed in advance at the tip of the nozzle 33. Accordingly, the bullet G is fired
by the air. In this case, the piston engagement portion 51 of the piston 30 and the
recoil weight 52 engaging with the piston engagement portion 51 rapidly move in the
-x direction in the same manner as the piston 30 by a force of the compressed recoil
spring 53 to return to the natural length of the recoil spring 53. Accordingly, the
recoil spring 52 collides with a tip portion 54 to generate an impact, and thus, a
so-called recoil shock is obtained.
[0023] Thereafter, as the piston 30 moves in the +x direction again, the recoil weight 52
engaging with the piston engagement portion 51 of the piston 30 also moves in the
+x direction, and compresses the recoil spring 53.
[0024] Thereafter, again, in the same manner as described above, the piston 30 disposed
in the cylinder 40 rapidly moves in the -x direction, and the recoil shock is obtained
by the force of the compressed recoil spring 53 to return to the natural length of
the recoil spring 53. Accordingly, when the trigger 20 is pulled, the so-called recoil
shock is obtained every time the bullet G is fired. Further, a recoil bar 60 connected
to the recoil weight 52 is provided. Moreover, the electric gun 10 has the recoil
weight 52, the recoil bar 60, and the recoil plate 61 which is connected to the recoil
bar 60. The recoil weight 52, the recoil bar 60, and the recoil plate 61 may be collectively
referred to as a piston interlocking portion 250. The piston interlocking portion
250 is literally interlocked with the movement of the piston 30, and reciprocates
in the -x direction and the +x direction according to the firing of the bullet G.
[0025] As described above, in the present embodiment, the empty shooting prevention device
200 has the switch 201, which is connected to the first contact 21 in series by the
wire S and is separated from the first contact 21, outside the housing 16 of the mechanical
box as described above. Moreover, the bullet detection device 300 of the present embodiment
detects that the shooting of the bullet G ends and the bullet G in the magazine portion
500 runs out, the switch 201 is disconnected by a switch disconnecting portion 270
of the power supply stop portion 202, and thus, the power supply to the motor 22 stops.
Moreover, the switch disconnecting portion 270 is disconnected by the piston interlocking
portion 250 which is driven by the movement of the piston 30. Therefore, as described
above, even in a state where the trigger 20 is pulled and the first contact 21 is
in contact with the trigger 20, the switch 201 which is connected to the first contact
21 in series is disconnected. Accordingly, it is possible to prevent the empty shooting.
[0026] Accordingly, the bullet detection device 300 which detects that the bullet G in the
magazine portion 500 runs out will be described. The bullet detection device 300 is
disposed in the magazine portion 500. Therefore, first, a configuration of the magazine
portion 500 will be described, and thereafter, the bullet detection device 300 will
be described.
[0027] The magazine portion 500 has a magazine body portion 501 which constitutes an outer
shell as a so-called magazine for supplying the bullet G to the electric gun 10. In
addition, a bullet disposition portion 502 is a passage in which a plurality of the
bullets G is disposed and through which the bullet G is fed into the electric gun
10. A width of the bullet disposition portion 502 is set to be equal to a width of
the bullet G. The bullet disposition portion 502 includes a magazine spring 505 for
pushing up the plurality of bullets G in a direction (+y direction) of an opening
503 and a follower portion 510 biased by the magazine spring 505.
[0028] Accordingly, the follower portion 510 includes a first follower 511 which is biased
by the magazine spring 505, a second follower 512 which is biased by the first follower
511, and a third follower 513 which is biased by the second follower 512, and the
bullet G is always biased in the direction (+y direction) of the opening 503 as described
above. That is, the magazine spring 505 presses the first follower 511 in the follower
portion 510. In addition, any one of the second follower 512 and the first follower
511 has a shaft portion, the other thereof has a bearing portion, and the shaft portion
and the bearing portion are fitted and connected to each other. Therefore, in a case
where the bullet disposition portion 502 is curved, the second follower 512 and the
first follower 511 are connected to each other in a bendable manner so that the bullet
disposition portion 502 can follow the curved shape. Moreover, the third follower
513 is in contact with the second follower 512, and thus, is pressed by the second
follower 512.
[0029] In addition, a lower end portion 505a of the magazine spring 505 is disposed at an
end portion 502a of the bullet disposition portion 502, and a spring upper end portion
505b of the magazine spring 505 is connected to the first follower 511 of the follower
portion 510. Further, a bullet locking portion 515 is disposed to prevent the bullet
G from jumping out when the magazine portion 500 is removed from the electric gun
10 (not illustrated) and is biased in the +x direction by a bullet locking spring
516.
[0030] That is, when the plurality of bullets G are packed in the magazine portion 500 having
the above-described configuration, the magazine spring 505 is compressed by the plurality
of bullets G, and the bullet G disposed at an uppermost position out of the plurality
of bullets G is prevented from jumping out by the bullet locking portion 515 biased
in the +x direction by the bullet locking spring 516. Accordingly, the plurality of
bullets G are disposed in the magazine portion 500. In addition, when the magazine
portion 500 is set to the electric gun 10, the bullet locking portion 515 is pressed
in the -x direction by a chamber 34 (refer to Fig. 1), and the bullet locking portion
515 is pressed. Accordingly, the engagement between the bullet locking portion 515
and the bullet G is released. As a result, the bullet G is loaded into the electric
gun 10. Moreover, in Figs. 3, 4, and 5A, the engagement between the bullet locking
portion 515 and the bullet G is released.
[0031] In the present embodiment, the bullet detection device 300 is disposed in the magazine
portion 500 and includes the detection engagement portion 301 which is disposed in
the first follower 511 of the follower portion 510 and a detection rotating portion
310 which is rotated in response to rise of the detection engagement portion 301.
[0032] The detection rotating portion 310 includes a detection engaged portion 311, a detection
push portion 312 which is disposed at an angle of approximately 90° with respect to
the detection engaged portion 311, a detection shaft portion 313, and a first main
body portion 330 which is disposed between the detection push portion 312 and the
detection shaft portion 313 and is a thin-plate shaped triangular. The detection engaged
portion 311, the detection push portion 312, the detection shaft portion 313, and
the first main body portion 330 are integrated with each other, and constitute the
detection rotating portion 310. In addition, the detection rotating portion 310 rotates
so as to oscillate about the detection shaft portion 313 (refer to Fig. 3).
[0033] When all the bullets G disposed in the magazine portion 500 have been shot, there
is no bullet G disposed in the magazine portion 500, and a length of the magazine
spring 505 is returned to a natural length sufficiently longer than a length of the
bullet disposition portion 502. Accordingly, the first follower 511 of the follower
portion 510 is pushed up in the direction of the opening 503.
[0034] At the same time, the first follower 511 connected to the spring upper end portion
505b of the magazine spring 505 rises, the detection engagement portion 301 disposed
in the first follower 511 rotates the detection engaged portion 311 of the detection
rotating portion 310 counterclockwise and rotates the detection push portion 312 integrated
with the detection engaged portion 311 counterclockwise. Accordingly, the detection
push portion 311 protrudes to jump out from an inside of the magazine portion 500.
When all the bullets G disposed in the magazine portion 500 are shot out in this way,
the detection push portion 312 protrudes from the inside of the magazine portion 500,
and thus, it is detected that there is no bullet G (refer to Fig. 4). In this case,
an upper end portion 513a of the third follower 513 protrudes from the opening 503.
In the present embodiment, a position at which the detection push portion 312 protrudes
so as to jump out from the inside of the magazine portion 500 is a position (in the
-x direction) opposite to the housing 16 in the mechanical box with respect to the
bullet disposition portion 502 (refer to Fig. 1). That is, the position of the housing
16 in the mechanical box is located in a direction (the +x direction) of the trigger
20 with respect to the bullet disposition portion 502. Meanwhile, the detection push
portion 312 of the bullet detection device 300 detects the presence or absence of
a bullet in order to disconnect the switch 201 disposed outside the housing 16. Accordingly,
the detection push portion 312 is disposed at a position (in the -x direction) opposite
to the position of the trigger 20 with respect to the bullet disposition portion 502.
[0035] In addition, there is provided an empty shooting prevention function stopping device
360 in order to stop a function of the bullet detection device 300. Accordingly, a
second detection shaft portion 350 which is disposed in the detection engaged portion
311 of the detection rotating portion 310 and a function stop engagement portion 361
of the empty shooting prevention function stopping device 360 engage with each other,
and the detection push portion 312 of the detection rotating portion 310 substantially
stays in the magazine portion 500 without protruding too much outside the magazine
portion 500. As a result, the function of the empty shooting prevention device 200
described later can be stopped, and so-called empty shooting can be performed even
in a state where there is no bullet G in the bullet disposition portion 502 and the
bullet disposition portion 502 is empty. This is particularly suitable for a user
who wants to experience only the recoil shock because an operation check of the electric
gun having the recoil shock can be performed in a state where the magazine portion
500 is not filled with the bullets G, which contributes safety.
[0036] That is, the empty shooting prevention function stopping device 360 slides in the
-x direction from the state of Fig. 4. Figs. 5A and 5B illustrate a state where the
empty shooting prevention function stopping device 360 slides in the -x direction.
In this state, the position engagement portion 365 of the empty shooting prevention
function stopping device 360 disengages from a first groove portion 551 of the magazine
portion 500 and engages with a second groove portion 552. In this case, the function
stop engagement portion 361 of the empty shooting prevention function stopping device
360 engages with the second detection shaft portion 350 disposed in the detection
engaged portion 311 of the detection rotating portion 310. As described above, the
detection rotating portion 310 is pushed down clockwise on an xy plane in Fig. 5A
by the empty shooting prevention function stopping device 360, and the detection push
portion 312 integrated with the detection engaged portion 311 stays in the magazine
body portion 501 without protruding too much outside the magazine body portion 501.
[0037] In this state, in a case where the bullet G is hit and the bullet G in the bullet
disposition portion 502 runs out, as described above, the follower portion 510 rises
and the detection engagement portion 301 disposed in the first follower 511 of the
follower portion 510 engages with the detection engaged portion 311 of the detection
rotating portion 310. However, the rotation (counterclockwise rotation in Fig. 5A)
of the detection rotating portion 310 is prevented by the empty shooting prevention
function stopping device 360, and the detection push portion 312 of the detection
rotating portion 310 substantially stays in the magazine body portion 501 of the magazine
portion 500 without protruding too much outside the magazine portion 500. In this
case, the upper end portion 513a of the third follower 513 does not protrude from
the opening 503, and the upper end portion 513a stays in the opening 503.
[0038] In addition, the empty shooting prevention function stopping device 360 slides in
the +x direction from the states of Figs. 5A and 5B. When the empty shooting prevention
function stopping device 360 slides in the +x direction, the position engagement portion
365 of the empty shooting prevention function stopping device 360 disengages from
the second groove portion 552 of the magazine portion 500 and engages with the first
groove portion 551. In this case, the function stop engagement portion 361 of the
empty shooting prevention function stopping device 360 disengages from the second
detection shaft portion 350 disposed on the detection engaged portion 311 of the detection
rotating portion 310. As described above, the empty shooting prevention function stopping
device 360 moves, and thus, the function stop engagement portion 361 of the empty
shooting prevention function stopping device 360 is disposed so as to engage with
or disengage from the detection engaged portion 311 of the detection rotating portion
310. In addition, the empty shooting prevention function stopping device 360 has a
groove portion 366. Accordingly, since the position engagement portion 365 is elastically
deformable so as to be restorable, the position engagement portion 365 is suitable
for engaging with the first groove portion 551 and the second groove portion 552,
or disengaging therefrom. (refer to Figs. 4, 5A, and 5B).
[0039] Moreover, in Fig. 5B, the second detection shaft portion 350 is configured to protrude
toward a front of the drawing, and when the position engagement portion 365 of the
empty shooting prevention function stopping device 360 engages with the first groove
portion 551 of the magazine portion 500, the second detection shaft portion 350 does
not stop the function of the bullet detection device 300, and when the position engagement
portion 365 engages with the second groove portion 552, the second detection shaft
portion 350 stops the function of the bullet detection device 300 (refer to Figs.
4, 5A, and 5B).
[0040] Next, the empty shooting prevention device 200 in the electric gun 10 will be described.
As described above, in the empty shooting prevention device 200, the switch 201 is
provided outside the housing 16, and in order to prevent the so-called empty shooting
when there is no bullet G in the magazine portion 500, the power supply stop portion
202 described later disconnects the contact with the switch 201. Therefore, the power
supply stop portion 202 is operated in response to the protrusion of the detection
push portion 312 to disconnect (does not supply power) the contact with the switch
201.
[0041] The power supply stop portion 202 includes a detection receiving portion 210 for
receiving the protrusion operation of the detection push portion 312 from the magazine
portion 500, the piston interlocking portion 250 which is interlocked with the movement
of the piston 30, and the switch disconnecting portion 270 for separating the contact
of the switch 201 (refer to Fig. 6). The detection receiving portion 210 has a first
detection receiving portion 211 and a second detection receiving portion 212, and
receives a movement operation of the detection push portion 312 in the -x direction.
The first detection receiving portion 211 receives the movement of the detection push
portion 312 in the -x direction and moves in the -x direction (refer to Figs. 6, 7A,
and 7B).
[0042] The second detection receiving portion 212 is rotatably supported by a shaft portion
213. The protruding portion 212a of the second detection receiving portion 212 is
further pressed by a tip portion 211a of the first detection receiving portion 211
pressed by a tip portion 312a of the detection push portion 312. According to Figs.
8A and 8B which are bottom views, the second detection receiving portion 212 rotates
clockwise on an xz plane. Accordingly, the other end portion 212b of the second detection
receiving portion 212 also rotates clockwise on the xz plane, and thus, the other
end portion 212b protrudes in the trajectory of the recoil plate 61 which reciprocates
from the -x direction to the +x direction. That is, the piston 30 reciprocates from
the -x direction in the +x direction, and thus, the recoil plate 61 in the piston
interlocking portion 250 which is interlocked with the reciprocation of the piston
30 also reciprocates from the -x direction in the +x direction. Moreover, as described
above, the other end portion 212b protrudes in the trajectory along which the other
end portion 212 reciprocates. That is, in Figs. 8A and 8B, the second detection receiving
portion 212 is pressed by the first detection receiving portion 211, and thus, the
second detection receiving portion 212 is in a state where the other end portion 212b
is located upward in the drawing, that is, the other end portion 212b stands uprightly,
and the other end portion 212b protrudes in the trajectory along the recoil plate
61 reciprocates(-x direction and +x direction).
[0043] Fig. 9 is an enlarged side view of a state where a muzzle of the electric gun 10
faces right in the states of Figs. 8A and 8B. This state is a state where a stop plate
280 of the switch disconnecting portion 270 described below does not engage with a
switch lever 290.
[0044] In this state, the piston 30 still reciprocates. Accordingly, the other end portion
212b of the second detection receiving portion 212 standing uprightly in Figs. 8A
and 8B engages with the recoil plate 61 of the piston interlocking portion 250 in
Figs. 10A and 10B thereafter. As described above, the recoil plate 61 reciprocates
from the -x direction to the +x direction. Accordingly, the second detection receiving
portion 212 engages with the recoil plate 61 and the other end portion 212b of the
second detection receiving portion 212 is operated so as to rotate clockwise on the
xz plane. That is, the motor 22 rotates and the piston 30 continuously reciprocates
since the power supply is not disconnected yet. However, the other end portion 212b
of the second detection receiving portion 212 is further rotated clockwise on the
xz plane by the piston interlocking portion 250 which follows the reciprocation of
the piston 30. Moreover, the spring 214 biases the second detection receiving portion
212 counterclockwise (refer to Figs. 10A and 10B).
[0045] Accordingly, one end portion 212c of the second detection receiving portion 212 also
rotates clockwise on the xz plane. Further, the one end portion 212c of the second
detection receiving portion 212 of the detection receiving portion 210 rotated clockwise
engages with the switch disconnecting portion 270 to operate the switch disconnecting
portion 270. Further, according to the operation of the switch disconnecting portion
270, the switch disconnecting portion 270 disconnects the contact of the switch 201,
that is, disconnects the switch 201 (refer to Figs. 8A, 9, 10A, and 10B).
[0046] To further describe this, first, the switch disconnecting portion 270 has a latch
271, the stop plate 280, and a switch lever 290. Moreover, a latch spring 272 biases
the latch 271 clockwise. According to the configuration, the one end portion 212c
of the second detection receiving portion 212 engages with the latch 271 of the switch
disconnecting portion 270, and the one end portion 212c rotates the latch 271 counterclockwise
against a clockwise biasing force of the latch spring 272. (refer to Figs. 8A, 9,
10A, 10B, and 11).
[0047] The latch 271 has a latch convex portion 271a, and the stop plate 280 engaging with
the latch convex portion 271a is biased in the -x direction by a stop plate spring
281. Therefore, the latch 271 is rotated counterclockwise, and the stop plate 280
disengaged from the latch convex portion 271a of the latch 271 moves in the -x direction.
Fig. 11 is a side view illustrating a state where the muzzle of the electric gun 10
faces right in the states of Figs. 10A and 10B. By comparing Fig. 9 with Fig. 11,
it can be understood that the stop plate 280 moves in the -x direction.
[0048] The stop plate 280 moves in the -x direction. Accordingly, the switch lever one end
portion 291 of the switch lever 290 is pushed down, and the switch lever other end
portion 292 is pulled up in the +y direction about the switch lever shaft portion
293. In this case, a convex portion 294 attached to the switch lever shaft portion
293 rotates to lift a first contact portion 201a of the switch 201 and disconnects
a contact with a second contact portion 201b of the switch 201. Accordingly, power
supply of the motor 22 is prevented, and it is possible to prevent the empty shooting
(refer to Fig. 11). That is, the detection receiving portion 210 operates the switch
disconnecting portion 270, and the switch disconnecting portion 270 disconnects the
switch 201. In addition, the switch lever 290 includes the switch lever one end portion
291 and the switch lever other end portion 292, and has a substantially isosceles
triangular shape in which an apex angle therebetween is an obtuse angle. In addition,
the switch lever spring 290a biases the switch lever 290 counterclockwise in Fig.
11. Thereby, in a state where the bullet G is disposed in the magazine portion 500
or in a case where the empty shooting prevention function stopping device 360 is operated,
the first contact portion 201a of the switch 201 is pushed down, and the contact with
the second contact portion 201b of the switch 201 is ensured.
[0049] As described above, in the related art, it is necessary to use a mechanical box having
a mechanical power supply stopping device for a dedicated electric gun. However, the
empty shooting prevention device can be installed as an independent device from a
so-called mechanical box, and thus, this device is installed in a portion where there
is a space regardless of an external shape of the electric gun. Accordingly, it is
possible to use the existing mechanical box. Therefore, even if the user keeps pulling
the trigger 20 in a state where there is no bullet G in the magazine after the shooting
of the bullet G ends, an effect of preventing so-called empty shooting can be achieved.
Moreover, in the case of an electric gun having no magazine portion, an effect of
preventing the empty shooting can be obtained by having the same configuration as
that of the bullet detection device in the main body of the electric gun.
[0050] Moreover, in this state, the first contact portion 201a of the switch 201 is lifted
by the above-described effects of the stop plate 280 and the switch lever 290, and
the contact with the second contact portion 201b of the switch 201 is disconnected
(refer to Fig. 11). Therefore, in order to cause the first contact portion 201a and
the second contact portion 201b of the switch 201 to come into contact with each other
again, a bolt portion 295 is pulled in the +x direction. If a user (not illustrated)
pulls the bolt portion 295, the bolt portion 295 engages with the stop plate 280 according
to a certain stroke. The stop plate 280 engaging with the bolt portion 295 is biased
in the -x direction by the stop plate spring 281. Accordingly, the bolt portion 295
is pulled in the +x direction against this biasing force (refer to Fig. 12).
[0051] Fig. 13 is an enlarged bottom view in a state where the muzzle faces left in the
state of Fig. 12. In addition, when the magazine portion 500 filled with the bullets
G in advance is set to the electric gun 10 and the bolt portion 295 is pulled in the
+x direction as described above, the stop plate 280 also moves in the +x direction
and engages with the latch 271 again. The stop plate 280 stays at this position against
the stop plate spring 281. The first contact portion 201a of the switch 201 is pushed
down to come into contact with the second contact portion 201b of the switch 201 (refer
to Figs. 12 and 13). Thereafter, when the trigger 20 is pulled, the bullet G can be
fired again. Moreover, in the present embodiment, the recoil shock generating mechanism
50 is provided. However, even in a case where the recoil shock generating mechanism
50 is not provided, the piston interlocking portion 250 which follows the reciprocating
motion of the piston 30 may be disposed or the piston 30 itself may be implemented
as the piston interlocking portion 250.
Reference Signs List
[0052]
- 10:
- electric gun
- 15:
- engine portion
- 16:
- housing
- 20:
- trigger
- 21:
- first contact
- 22:
- motor
- 23:
- motor gear
- 24:
- bevel gear
- 25:
- gear
- 26:
- sector gear
- 30:
- piston
- 31:
- rack portion
- 32:
- spring
- 50:
- recoil shock generating mechanism
- 51:
- piston engagement portion
- 52:
- recoil weight
- 53:
- recoil spring
- 54:
- tip portion
- 60:
- recoil bar
- 61:
- recoil plate
- 200:
- empty shooting prevention device
- 201:
- switch
- 202:
- power supply stop portion
- 250:
- piston interlocking portion
- 270:
- switch disconnecting portion
- 300:
- bullet detection device
- 312:
- detection push portion
- 500:
- magazine portion
- G:
- bullet