BACKGROUND OF THE INVENTION
1. Field of the Invention
[0001] This invention relates to an electric dispenser for wrap film, particularly to one
composed of a base, two side covers, a conveying track, a driving device, a cutting
device, an accommodating case and a bottom cover, able to cut off the wrap film safely,
used conveniently and replaceable with a new wrap film quickly.
2. Description of the Prior Art
[0002] Nowadays, wrap film is often used to wrap around foods or on containers, such as
a bowl and a dish etc, with foods so as to keep foods free from dirt or contaminated
by fly or insects, or dehydrated if stored in a refrigerator, especially for vegetables
and fruits. Or, if foods are to be cooked by microwave or steam, they can be wrapped
with wrap film to keep airtight or warm. Therefore, wrap film is really necessary
for cooking or foods storing.
[0003] As shown in Fig. 1, a conventional wrap film dispenser is provided with a wrap film
spool 10 stored in a rectangular box 11 having one of its sides set as a door 12 able
to be opened to form an opening on the box 11. Along the edge of the opening is installed
a toothed cutter 13. In using, wrap film 100 is first pulled out to an expected length
by one hand and next, the other hand has to press on the door 12, so that the hand
holding the end of the wrap film 100 can force oppositely against the cutter 13 to
keep the wrap film 100 cut off. But, actually, although the door 12 is pressed by
a user, the wrap film 100 is always unapt to be torn off, keeping it entangled to
become wasted or cut deformed, because of an uneven force pressed along the cutter
13. In addition, the cutter 13 is installed outside the box 11, possible to hurt a
user's hand while tearing the wrap film 100 incautiously.
[0004] Therefore, the invention has been devised to overcome the defects mentioned above.
SUMMARY OF THE INVENTION
[0005] The objective of this invention is to offer an electric dispenser for wrap film,
able to automatically cut off the wrap film safely, be used conveniently and be replaced
with a new wrap film quickly.
[0006] The invention is composed of a base (2), two side covers (3), a conveying track (4),
a driving device (5), a cutting device (6), an accommodating case (7) and a bottom
cover (9), mainly characterized that the conveying track (4) is installed in the base
(2), provided with at least two axial tubes (41), positioning caps (42) inserted in
two ends of each of the axial tubes (41) for locking in locking grooves (25) of the
base (2), and a driving cap (43) fitted in one end of one of the axial tubes (41)
and having female gear teeth (431) set at its one end; the driving device (5) is installed
outside one of the side covers (3), provided with a synchronous motor (50) having
a driving gear (501) set at its one side for engaging with the female gear teeth (431)
of the driving cap (43) of the conveying track (4). The synchronous motor (50) is
fixed in a control box (51) that is installed with a switch (53) and a button (54);
the cutting device (6) is stretched across the side covers (3), provided with a driving
motor (60), a threaded bar (61), a blade fixing base (62) and an auxiliary rod (63).
The driving motor (60) is driven by the driving device (5) to activate the auxiliary
rod (63) to rotate. The blade-fixing base (62) is attached on the auxiliary rod (63)
to move axially along it, provided with a blade (621) fitted at its one side to extend
to a surface of the conveying track (4).
BRIEF DESCRIPTION OF DRAWINGS
[0007] This invention is better understood by referring to the accompanying drawings, wherein:
Fig. 1 is a perspective view of a conventional wrap film, showing it being used;
Fig. 2 is an exploded perspective view of a preferred embodiment of an electric dispenser
for wrap film in the present invention;
Fig. 3 is a perspective view of a cutting device of the preferred embodiment of an
electric dispenser for wrap film in the present invention;
Fig. 4 is a perspective view of the preferred embodiment of an electric dispenser
for wrap film in the present invention, showing a driving device and the cutting device;
Fig. 5 is a side cross-sectional view of the preferred embodiment of an electric dispenser
for wrap film in the present invention;
Fig. 6 is a first partial cross-sectional view of an accommodating case and a conveying
track of the preferred embodiment of an electric dispenser for wrap film in the present
invention;
Fig. 7 is a second partial cross-sectional view of the accommodating case and the
conveying track of the preferred embodiment of an electric dispenser for wrap film
in the present invention;
Fig. 8 is a first cross-sectional view of the cutting device of the preferred embodiment
of an electric dispenser for wrap film in the present invention, showing it being
used;
Fig. 9 is a second cross-sectional view of the cutting device of the preferred embodiment
of an electric dispenser for wrap film in the present invention, showing it being
used; and
Fig. 10 is a perspective view of the preferred embodiment of an electric dispenser
for wrap film in the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0008] As shown in Figs. 2 - 7, a preferred embodiment of an electric dispenser for wrap
film in the present invention includes a rectangular base 2, two sidewalls 3, a conveying
track 4, a driving device5, a cutting device 6, an accommodating base 7 and bottom
cover 9 as main components.
[0009] The base 2 is provided with a chamber 20 formed inside it and a sidewall 21 respectively
formed at its right, left and bottom side. Each of the sidewalls 21 is bored with
plural screw holes 210, and there is a pinhole 22, an elastic pinhole 23 and a blocking
pinhole 24 bored on each of the right and the left sidewall 21. In addition, three
locking grooves 25 shaped similar to C are formed along the edge of the right and
the left sidewall 21, and a shaft hole 26 is bored on the left sidewall 21. The chamber
20 is additionally provided with a blocking strip 200 projected at a proper location
of its back, and two hooking holes 201 bored near the top of its back.
[0010] Each of the side covers 3 is installed on two sides of the base 2, provided with
plural screw holes 30 bored on its outside wall near the top, and plural threaded
columns 31 located inside to correspond to the screw holes 210 of the sidewalls 21
of the base 2 respectively. The threaded column 31 has one of its ends formed recessed
in the outside surface of the side cover 3. Each of the side covers 3 is also provided
with a pin 32 projected near its top to correspond to the pin hole 22 of the base
2, a locking block 33 also projected near its top to correspond to the pin hole 23
of the base 2, and a blocking pin 34 extended inward to correspond to the blocking
pin hole 24 of the base 2. The locking block 33 is provided with a locking slot 330
dug on its front end. The right side cover 3 is provided with two accommodating grooves
35 and the left side cover 3 is provided with a recessed accommodating groove 35 to
correspond with the locking grooves 25 of the base 2. The left side cover 3 is provided
with a shaft hole 36 bored corresponding to the shaft hole 26 of the base 2, plural
threaded columns 37 projected on its outside surface and a blade aperture 38 opened
in an upper portion for fitting with a blade 621 of the cutting device 6. Each of
the side covers 3 is provided with a concaved surface 39 located on its top.
[0011] The conveying track 4 installed in the chamber 20 of the base 2 is provided with
toothed conveying bands 40 laid fully on its surface, an axial tube 41 fitted at its
two ends respectively, two positioning caps 42 installed in two ends of the lower
axial tube 41. Each of the positioning caps 42 is provided with a blocking flange
420 used to keep the axial tube 41 restricted, and an elastic hook 421 set outside
the blocking flange 421 for locking with the locking groove 25 of the base 2, enabling
the axial tube 41 to rotate at the position. The conveying track 4 is also provided
with a driving cap 43 fitted in the left end of the upper axial tube 41. The driving
cap 43 is to be correspondingly fitted in the shaft holes 26 and 36 of the base 2
and the side cover 3, provided with a blocking flange 430 to restrict the axial tube
41, and female gear teeth 431 set at its outside end.
[0012] The driving device 5 is installed outside the left side cover 3, as shown in Figs.
2, 4 and 5, provided with a synchronous motor 50 fixed in a control box 51, and a
power line 52 linked to the control box 51 to supply power for the synchronous motor
50. The synchronous motor 50 is provided with a shaft 500 extended outward from one
side, and a driving gear 501 set at one end of the shaft 500 for engaging with the
female gear 431 of the driving cap 43 of the conveying track 4 to drive the conveying
track 4 to work via passing through the shaft holes 26 and 36 of the base 2 and the
side cover 3. The control box 51 is provided with plural screw holes 510 for fitting
with the threaded columns 37 of the left side cover 3. The driving device 5 is additionally
provided with a switch 53 and a button 54 set on the control box 51, for respectively
turning on/off the synchronous motor 50 and the cutting device.
[0013] The cutting device 6 stretched across the side covers 3 as shown in Figs. 2 - 4 is
provided with a driving motor 60 connected to and controlled by the button 54 of the
driving device 5 via a power line, and a threaded bar 61. The driving motor 60 is
provided with a driving gear 600 located at its outside for engaging with a small
gear 610 provided at one end of the threaded bar 61. The cutting device 6 is also
provided with a blade fixing base 62 fitted on the top of the threaded bar 61 via
plural guiding strips 620 located at one side of the blade fixing base 62, so as to
enable the blade fixing base 62 to reciprocate horizontally along the threads 611
of the threaded bar 61. The blade fixing base 62 is also provided with a blade 621
positioned at its other side, extending toward the chamber 20 of the base 2 to keep
its edge positioned exactly on the surface of the conveying track 4 and fitted in
the blade aperture 38 of the side covers 3, and a through hole 622 located above the
outside of the blade 621. In addition, the cutting device 6 is provided with an auxiliary
rod 63 inserted through the through hole 622 of the blade fixing base 62, and a cover
64 used to shelter the driving motor 60, the threaded bar 61, the blade fixing base
62 and the auxiliary rod 63, provided with screw holes 640 at its two sides corresponding
to the screw holes 30 of the side covers 3, and two posts 641 installed at one side
of its interior wall for supporting the ends of the threaded bar 61 and the auxiliary
post 63, as shown in Fig. 8.
[0014] The accommodating case 7 installed on the top of the base 2 as shown in Figs. 2,
5 and 6 is provided with two sidewalls 70, an auxiliary roller 71 installed at its
bottom, a grip 72 set on its top, a conical pole 73 and a positioning cap 74 used
to keep the wrap film 8 positioned in the accommodating case 7. Each of the sidewalls
70 is provided with a blocking elastic pin 700 located on its top portion, a blocking
edge 701 formed at the outside of the end of the blocking elastic pin 700 for locking
with the locking slot 330 of the locking block 33 of the side cover 3 to keep positioned
via passing through the elastic pin hole 23 of the sidewall 21 of the base 2, and
a locking groove 702. Each of the conical pole 73 and the positioning cap 74 is provided
with a blocking flange 730 and 740 formed at its outside to lean against two ends
of a spool 80 of the wrap film 8, an elastic hook 731 and 741 set outside the blocking
flange 730 and 740 for locking with the locking groove 702 of the sidewall 70 to enable
the conical pole 73 and the wrap film 8 to rotate at the position. The conical pole
73 is in addition provided with an annular locking groove 732 for locking with a ring
75 that is to attach around the interior wall of the spool 80 of the wrap film 8.
In addition, a cover 76 is set on the top of the accommodating case 7, provided with
a projection 760 extended out at the top of its two sides respectively for locking
with the concaved surface 39 of the side covers 3, and an opening 761 for a hand to
easily open the cover 76.
[0015] The bottom cover 9 installed at the bottom of the base 2 is provided with plural
screw holes 90 corresponding to the screw holes 210 of the lower sidewall 21 of the
base 2, and a front cover 91 formed via bending its front portion, able to just lock
on the bottom of the side covers 3 to make the whole invention look aesthetic.
[0016] In assembly, as shown in Figs. 2, 4 ∼ 6, and 10, the positioning caps 42 and the
driving cap 43 are first inserted in the ends of the axial tubes 41 of the conveying
track 4. The conveying track 4 is next installed in the chamber 20 of the base 2,
keeping the elastic hooks 421 of the positioning caps 42 locked in the locking grooves
25 of the sidewalls 21 of the base 2, enabling the axial tubes 41 to rotate at the
position, and the female gear 431 of the driving cap 43 fitted exactly in the shaft
hole 26 of the sidewall 21. The side covers 3 are next assembled on two sides of the
base 2, enabling the pins 32 of the side covers 3 fitted in the pin holes 22 of the
sidewalls 21 of the base 2, the locking blocks 33 fitted in the elastic pin holes
23, the blocking pins 34 fitted in the blocking pin holes 24, and the screw holes
31 of the side covers 3 corresponding to and screwed with the screw holes 210 of the
sidewalls 21 of the base 2. By the time, the elastic hooks 420 of the positioning
caps 42 of the conveying track 4 extending out of the sidewalls 21 are just confined
in the accommodating groove 35 of the side cover 3. Next, the driving device 5 is
installed outside of the left side cover 3, keeping the driving gear 501 engaged with
the female gear 431 of the driving cap 43 via passing through the shaft holes 36 and
26 of the side cover 3 and the sidewall 21 of the base 2. The cutting device 6 is
stretched across the side covers 3, enabling the blade 621 of the blade fixing base
62 to stay in the blade apertures 38 of the side covers 3, and the screw holes 640
of the cover 64 to correspond to and screwed with the screw holes 30 of the side covers
3. Then, the bottom cover 9 is installed at the bottom of the base 2, keeping the
front cover 91 covered on the bottom of the base 2 and locked with the bottom of the
side covers 3, and the screw holes 90 corresponding to and screwed with the screw
holes 210 of the bottom sidewall 21 of the base 2. The accommodating case 7 is installed
at the top of the base 2 for containing the wrap film 8, first keeping the through
pole 73 inserted in one end of the spool 80 of the wrap film 8 after mounted with
the ring 75 and the positioning cap 74 inserted in the other end of the spool 80,
and then keeping the elastic hooks 731 and 741 locked in the locking grooves 702 of
the sidewalls 70 to enable the spool 80 of the wrap film 8 to rotate immovably. Next,
the wrap film 8 is pulled out with a certain length to wind around and from the rear
of the auxiliary roller 71 to attach on the conveying track 4, as shown in Fig. 5.
The accommodating case 7 is then pushed into the chamber 20 of base 2, keeping the
blocking elastic pins 700 passing through the elastic pin holes 23 of the sidewalls
21 of the base 2 so that the blocking edges 701 can lock fixedly with the locking
slots 330 of the locking blocks 33 of the side covers 3. By the time, the accommodating
case 7 is loaded on and supported by the blocking strip 200 of the chamber 20 of the
base 2 with its bottom, and supported by the blocking pins 34 of the side covers 3
extending through the blocking pin holes 24 of the base 2 with two ends of its bottom.
Finally, the cover 76 is closed on the top of the accommodating case 7 by means of
the projections 760 locking with the concaved surfaces 39 of the side covers 3, as
shown in Fig. 10.
[0017] In using, as shown in Figs. 4 ∼ 9, the power line 52 of the driving device 5 is first
connected to a power source and the switch 53 on the control box 51 is pressed down
to activate the synchronous motor 50 to enable the shaft 500 and the driving gear
501 to start rotating. The driving cap 43 of the conveying track 4 is simultaneously
driven by the driving gear 501 to keep the conveying track 4 moved, prompting the
wrap film 8 attaching on the conveying track 4 to be pulled out. The synchronous motor
50 has to be paused while the wrap film 8 is extended out with a certain length. Afterwards,
the button 54 of the control box 51 is pressed to activate the driving motor 60 that
is to meanwhile enable the driving gear 600 and the small gear 610 engaged with the
driving gear 600 to rotate. By the time, the blade fixing base 62 is to be driven
by the threaded bar 61 to move horizontally along the threads 611, as shown in Fig.
9, enabling the blade 621 to cut off the wrap film 8 conveyed by the conveying track
4. Therefore, the invention can cut off the wrap film electrically and safely. In
addition, the invention can be slung on a wall via the hooking holes 201 of the chamber
20 of the base 2.
[0018] If the wrap film 8 is to be replaced with a new one, just open the cover 76 and hold
the grip 72 to pull out the accommodating case 7 with a little force, so as to take
out the spool 80 and re-fill a new wrap film 8. Then, as mentioned previously, pull
out the wrap film 8 a certain length to wind around and from the rear of the auxiliary
roller 71 to attach on the conveying track 4, and push the accommodating case 7 into
the chamber 20 of the base 2 to get positioned, making the invention ready for use.
[0019] While the preferred embodiment of the invention has been described above, it will
be recognized and understood that various modifications may be made therein and the
appended claims are intended to cover all such modifications that may fall within
the spirit and scope of the invention.
1. An electric dispenser for wrap film comprising:
a base (2) provided with a chamber (20) formed inside it, sidewalls (21) formed around
said base (2), locking grooves (25) formed in said sidewalls (21) and a shaft hole
(26) bored in said left sidewall (21);
two side covers (3) installed on two sides of said base (2), one of said side covers
(3) provided with a shaft hole (36);
an accommodating case (7) installed on a top of said base (2) and provided with two
sidewalls (70) respectively having a locking groove (702), an auxiliary roller (71)
installed at a bottom of said accommodating case (7), a conical pole (73) and a positioning
cap (74) inserted in two ends of a spool (80) of a wrap film (8) to keep said wrap
film (8) positioned in said accommodating case (7), said conical pole (73) fitted
with a ring (75) to tightly attach around an interior wall of said spool (80); and
characterized by
a conveying track (4) installed in said base (2) and provided with at least two axial
tubes (41), positioning caps (42) inserted in two ends of each said axial tubes (41)
for locking in said locking grooves (25) of said base (2), a driving cap (43) fitted
in one end of one of said axial tubes (41) and having female gear teeth (431) set
at its one end;
a driving device (5) installed outside one of said side covers (3) and provided with
a synchronous motor (50) having a driving gear (501) set at its one side for engaging
with said female gear teeth (431) of said driving cap (43) of said conveying track
(4), said synchronous motor (50) fixed in a control box (51) that is installed with
a switch (53) and a button (54); and
a cutting device (6) stretched across said side covers (3) and provided with a driving
motor (60), a threaded bar (61), a blade fixing base (62) and an auxiliary rod (63),
said driving motor (60) driven by said driving device (5) to activate said auxiliary
rod (63) to rotate, said blade fixing base (62) attached on said auxiliary rod (63)
to move along it axially and provided with a blade (621) fitted at its one side to
extend to a surface of said conveying track (4).
2. The electric dispenser for wrap film as claimed in Claim 1,
wherein said sidewalls (21) of said base (2) are bored with plural screw holes (30),
and each of said left and said right sidewall (21) is provided with a pin hole (22),
an elastic pin hole (23) and a blocking pin hole (24) bored properly in its upper
portion.
3. The electric dispenser for wrap film as claimed in Claim 1,
wherein said base (2) is provided with a blocking strip (200) located on its front
sidewall and plural hooking holes (201) bored on its front sidewall, too.
4. The electric dispenser for wrap film as claimed in Claim 1,
wherein each of said side covers (3) is provided with plural screw holes (30), a blade
aperture (38), plural threaded columns (31) corresponding to screw holes (210) bored
on said sidewalls (21) of said base (2), and a concaved surface (39) formed on its
top side.
5. The electric dispenser for wrap film as claimed in Claim 1,
wherein an inner side of each of said side covers (3) is provided with a pin (32),
a blocking pin (34), two accommodating grooves (35) and a locking block (33) having
a locking slot (330) formed at its front end.
6. The electric dispenser for wrap film as claimed in Claim 1,
wherein one of said side covers (3) is provided with plural threaded columns (37)
projected outward on its outer surface.
7. The electric dispenser for wrap film as claimed in Claim 1,
wherein said conveying track (4) is provided with toothed conveying bands (40) laid
fully on its surface.
8. The electric dispenser for wrap film as claimed in Claim 1,
wherein each of said positioning caps (42) of said conveying track (4) is provided
with a blocking flange (420) to lean against the end of said axial tube (41), and
an elastic hook (421) set outside said blocking flange (420) for locking with said
locking groove (25) of said base (2) to get positioned.
9. The electric dispenser for wrap film as claimed in Claim 1,
wherein said driving cap (43) of said conveying track (4) is provided with a blocking
flange (420) to lean against the end of said axial tube (41), corresponding to said
shaft hole (36) of said sidewall (21) of said base (2) and that of said side cover
(3).
10. The electric dispenser for wrap film as claimed in Claim 1,
wherein said control box (51) of said driving device (5) is provided with screw holes
(510) for screwing together with said threaded columns (31) of said side cover (3),
and a power line (52).
11. The electric dispenser for wrap film as claimed in Claim 1,
wherein said blade fixing base (62) of said cutting device (6) is provided with guiding
strips (620) located at its bottom side to attach on said threaded bar (61) so as
to enable said blade fixing base (62) to reciprocate axially along threads of said
threaded bar (61), and said blade (621) is to be fitted in said blade aperture (38)
of said side covers (3).
12. The electric dispenser for wrap film as claimed in Claim 1,
wherein said cutting device (6) is provided with cover (64) to contain said driving
motor (60), said threaded bar (61), said blade fixing base (62) and said auxiliary
rod (63) and said cover (64) is provided with a screw hole (640) at its two ends respectively
and posts (641) installed at one side of its interior wall for supporting said threaded
bar (61) and said auxiliary rod (63).