BACKGROUND OF THE INVENTION
1. Field of the Invention
[0001] The present invention relates to a pair of hairdressing scissors and the positioning
device thereof, and more particularly to a technique with which plural pairs of such
hairdressing scissors can be positioned firmly after being detachably secured to one
another.
2. Description of the Prior Art
[0002] The present invention relates to an improvement to the patents for the technique
of connecting hairdressing scissors, that were previously obtained by the applicant,
such as
US Pat. Nos. 6,192,590 B1 and
6,634,106 B2. These patents allow a plurality of pairs of hairdressing scissors to be connected
one another either in a parallel fashion or in a cascade fashion, so that the hairstylist
can hold the plural pairs of hairdressing scissors in the same hand easily for proceeding
with trimming, thinning or layering of the hair to obtain the desired special hairstyle.
However, as shown in Fig. 1, each of the first blade
10 and the second blade
20 of the two pairs of hairdressing scissors
1 is provided a connecting structure
80, in the front surface and on the rear surface of the connecting structure
80 are formed a recess
81 and a protrusion
82, so that a plurality of pairs of hairdressing scissors can be secured to one another
in such a manner that the protrusion
82 of a pair of hairdressing scissors is engaged in the recess
81 of another pair of hairdressing scissors. Due to the protrusion
82 is engaged in the recess
81 in a sliding manner, the protrusion
82 is very likely to slide or move relative to the recess
81, and the plural pairs of hairdressing scissors
1 cannot be positioned firmly relative to one another. Therefore, when the hairstylist
holds the plural pairs of hairdressing scissors in the same hand to do hair cutting,
the plural pairs of hairdressing scissors
1 will slide relative to each other, and this will make it inconvenient for the hairstylist
to hold the plural pairs of scissors firmly with one hand.
[0003] The present invention has arisen to mitigate and/or obviate the afore-described disadvantages.
SUMMARY OF THE INVENTION
[0004] The primary objective of the present invention is to provide a pair of hairdressing
scissors and a positioning device thereof, the first blade and/or the second blade
of the pair of hairdressing scissors installs at least a connecting structure, a front
surface and a rear surface of the connecting structure being formed a recess and a
protrusion, respectively. The connecting structure is defined a through hole and a
stop portion formed at a front end of the through hole, the front end of the through
hole connected to the recess. At least a positioning device is disposed in the through
hole and includes a retaining member, an elastic member and a fixing member, the retaining
member and the elastic member are sequentially placed in the through hole, and then
the fixing member is inserted in the through hole, the elastic member is biased between
the fixing member and the retaining member in such a manner that the retaining member
partially protrudes out of the front end of the through hole and is pressed against
the stop portion. When coupling a plurality of pairs of hairdressing scissors together,
the protrusion of a pair of hairdressing scissors is engaged in the recess of another
pair of hairdressing scissors. The protrusion moves toward and presses the retaining
member, so that the retaining member will overcome the elastic force of the elastic
member and retract into the through hole. When the protrusion traverses the retaining
member completely, the retaining member, under the effect of the restoring force of
the elastic member, will partially move out of the front end of the through hole and
stop against the lower end of the protrusion. In this way, the plural pairs of hairdressing
scissors can be coupled and positioned relative to one another firmly, thus enabling
the hairstylist to hold the plural pairs of hairdressing scissors with one hand more
easily and stably.
[0005] The secondary objective of the present invention is to provide a pair of hairdressing
scissors and a positioning device thereof, the first blade and/or the second blade
of the pair of hairdressing scissors installs at least a connecting structure, a front
surface and a rear surface of the connecting structure being formed a recess and a
protrusion, respectively. The connecting structure is defined a through hole, the
front end of the through hole connected to the recess. A positioning device is disposed
in the through hole and includes a retaining member with a supporting rod, a positioning
piece, a stop piece, an elastic member and a fixing member. The retaining member and
the elastic member are sequentially placed in the through hole, and then the fixing
member is inserted in the through hole. The positioning piece and the stop piece are
mounted on the supporting rod, the positioning piece is fixed in the through hole.
The elastic member is biased between the stop piece and the fixing member, and then
the stop piece abuts against the positioning piece, so that the retaining member will
partially protrude out of the front end of the through hole under the effect of the
elastic member. When coupling a plurality of pairs of hairdressing scissors together,
the protrusion of a pair of hairdressing scissors is engaged in the recess of another
pair of hairdressing scissors. The protrusion moves toward and presses the retaining
member, so that the retaining member will overcome the elastic force of the elastic
member and retract into the through hole. When the protrusion traverses the retaining
member completely, the retaining member, under the effect of the restoring force of
the elastic member, will partially move out of the front end of the through hole and
stop against the lower end of the protrusion. In this way, the plural pairs of hairdressing
scissors can be coupled and positioned relative to one another firmly.
[0006] Another objective of the present invention is to provide a pair of hairdressing scissors
and a positioning device thereof, the first blade and/or the second blade of the pair
of hairdressing scissors disposes at least a connecting structure and a positioning
device. In the abovementioned blade is formed a through hole for positioning the positioning
device. The positioning device includes a retaining member, an elastic member and
a fixing member. At the rear end of the through hole is formed a stop portion, in
the through hole are sequentially disposed the retaining member and the elastic member,
and then the fixing member. The front end of the elastic member presses against the
fixing member, and the rear end of the elastic member presses against the retaining
member. The retaining member partially protrudes out of the rear end of the through
hole and is stopped by the stop portion at the rear end of the through hole, furthermore,
a concave portion will be formed in the front end of the through hole. When coupling
a plurality of pairs of hairdressing scissors, a pair of hairdressing scissors moves
toward and presses the retaining member, so that the retaining member will overcome
the elastic force of the elastic member and retract into the through hole. When the
retaining member is aligned to the concave portion of another pair of hairdressing
scissors, the retaining member, under the effect of the restoring force of the elastic
member, will be engaged in the concave portion. In this way, the plural pairs of hairdressing
scissors can be positioned relative to each other in the same way.
[0007] The present invention will become more obvious from the following description when
taken in connection with the accompanying drawings, which show, for purpose of illustrations
only, the preferred embodiments in accordance with the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0008]
Fig. 1 is an exploded view of two pairs of conventional hairdressing scissors that
each has a connecting structure;
Fig. 2 is an exploded view of showing a first embodiment of the present invention;
Fig. 3 is an exploded view of showing a connecting structure and a positioning device
in accordance with the first embodiment of the present invention;
Fig. 4 is an enlarged cross sectional view of showing the positioning device in accordance
with the first embodiment of the present invention;
Fig. 5 is an operational view in accordance with the first embodiment of the present
invention, of showing that two pairs of hairdressing scissors are being coupled each
other;
Fig. 6 is a cross sectional view in accordance with the first embodiment of the present
invention, of showing that two pairs of hairdressing scissors that have been coupled
each other;
Fig. 7 is an enlarged cross sectional view of showing the positioning device in accordance
with a second embodiment of the present invention;
Fig. 8 is an operational view in accordance with the second embodiment of the present
invention, of showing that two pairs of hairdressing scissors are being coupled each
other;
Fig. 9 is a cross sectional view in accordance with the second embodiment of the present
invention, of showing that two pairs of hairdressing scissors that have been coupled
each other;
Fig. 10 is an exploded view of showing a third embodiment of the present invention;
Fig. 11 is an operational view in accordance with the third embodiment of the present
invention, of showing that two pairs of hairdressing scissors are being coupled each
other;
Fig. 12 is a cross sectional view in accordance with the third embodiment of the present
invention, of showing that two pairs of hairdressing scissors that have been coupled
to each other;
Fig. 13 is a cross sectional view in accordance with the third embodiment of the present
invention, of showing that two positioning devices are being positioned relative to
each other;
Fig. 14 is an operational view in accordance with the third embodiment of the present
invention, of showing that two pairs of hairdressing scissors are being coupled each
other, in the front side of the fixing member is formed a cavity; and
Fig. 15 is a cross sectional view in accordance with the third embodiment of the present
invention, of showing that two pairs of hairdressing scissors that have been coupled
each other, the retaining member is engaged in the cavity.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0009] Referring to Figs. 2 and 3, wherein a first blade
30 and a second blade
40 of a pair of hairdressing scissor
2 in accordance with a first embodiment of the present invention are pivotally connected
to each other by a pivot
50. Each of the handle portions
31 and
41 of the first blade
30 and/or the second blade
40 installs at least a connecting structure
60, the front and rear surfaces of the connecting structure
60 are formed a recess
61 and a protrusion
62, respectively. The protrusion
62 and the recess
61 are interlocked each other in a dovetail or other arrangements, and the connecting
structure
60 also can take other forms. The connecting structure
60 is defined a through hole
611 and a stop portion
612 formed at the front end of the through hole
611. As shown in Fig. 4, in the through hole
611 are arranged a positioning device
70 that includes a retaining member
71, an elastic member
72 and a fixing member
73. The retaining member
71 and the elastic member
72 are sequentially placed in the through hole
611, and then the fixing member
73 is inserted in the rear end of the through hole
611, so that the elastic member
72 is biased between the fixing member
73 and the retaining member
71. The retaining member
71 partially protrudes out of the front end of the through hole
611 and is confined within the recess
61 by the stop portion
612.
[0010] A plurality of pairs of hairdressing scissors
2 are connected together in such way that the protrusion
62 of a pair of hairdressing scissors
2A is engaged in the recess
61 of another pair of hairdressing scissors
2B. The protrusion
62 moves toward and presses the retaining member
71, so that the retaining member
71 will overcome the elastic force of the elastic member
72 and retract into the through hole
611. At this moment, the elastic member
72 is in a compressed state, as shown in Fig. 5. When the protrusion
62 traverses the retaining member
71 completely, and the top end of the protrusion
62 stops against the retaining walls
311 and
411 defined between the handle portions
31 and
41 and the recess
61, the retaining member
71, under the effect of the restoring force of the elastic member
72, will partially move out of the front end of the through hole
611 and stop against the lower end of the protrusion
62, as shown in Fig. 6. In this way, the two pairs of hairdressing scissors
2A and
2B are coupled and positioned relative to each other, and the plural pairs of hairdressing
scissors can be positioned relative to each other in the same way.
[0011] Referring to Fig. 7, a positioning device
70 in accordance with a second embodiment of the present invention is shown and includes
a retaining member
71 having a supporting rod
711, an elastic member
72 and a fixing member
73. On the supporting rod
711 are mounted a positioning piece
74 and a stop piece
75. The retaining member
71 and the elastic member
72 are sequentially received in the through hole
611, so as to fix the positioning piece
74 into the through hole
611. Then the fixing member
73 is fixed in the rear end of the through hole
611, the elastic member
72 is biased between the stop piece
75 and the fixing member
73, and then the stop piece
75 abuts against the positioning piece
74, so that the retaining member
71 partially protrudes out of the front end of the through hole
611 and is confined within the recess
61.
[0012] In the same way, the plural pairs of hairdressing scissors
2 are connected together in such way that the protrusion
62 of a pair of hairdressing scissors
2A is engaged in the recess
61 of another pair of hairdressing scissors
2B. The protrusion
62 moves toward and presses the retaining member
71, so that the retaining member
71 will overcome the elastic force of the elastic member
72 and retract into the through hole
611. At this moment, the elastic member
72 is in a compressed state, as shown in Fig. 8. When the protrusion
62 traverses the retaining member
71 completely, and the top end of the protrusion
62 stops against the retaining walls
311 and
411 defined between the handle portions
31 and
41 and the recess
61, the retaining member
71, under the effect of the restoring force of the elastic member
72, will partially move out of the front end of the through hole
611 and stop against the lower end of the protrusion
62, as shown in Fig. 9. In this way, the two pairs of hairdressing scissors
2A and
2B are coupled and positioned relative to each other, and the plural pairs of hairdressing
scissors can be positioned relative to each other in the same way.
[0013] A positioning device
70 in accordance with a third embodiment of the present invention, as shown in Fig.
10, the through hole
611 is arranged in the handle portions
31, 41 of the first blade
30 and/or the second blade
40. The front and rear surfaces of the connecting structure
60 are also formed a recess
61 and a protrusion
62, respectively, so that the protrusion
62 is engaged in the recess
61, and the connecting structure
60 also can be in other forms. The positioning device
70 is arranged in the through hole
611, as shown in Fig. 11. In the through hole
611 are sequentially disposed the retaining member
71 and the elastic member
72, and then the fixing member
73. The front end of the elastic member
72 presses against the fixing member
73, and the rear end of the elastic member
72 presses against the retaining member
71. The retaining member
71 partially protrudes out of the rear end of the through hole
611 and is stopped by the stop portion
612 at the rear end of the through hole
611, furthermore, a concave portion
613 will be formed in the front end of the through hole
611. The aforementioned connecting structure
60 and the positioning device
70 can be arranged at other appropriate positions on the first blade
30 and/or the second blade
40.
[0014] The plural pairs of hairdressing scissors
2 are connected together in such way that a pair of hairdressing scissors
2A moves toward and presses the retaining member
71, so that the retaining member
71 will overcome the elastic force of the elastic member
72 and retract into the through hole
611. At this moment, the elastic member
72 is in a compressed state, as shown in Fig. 11. When the retaining member
71 is aligned to the concave portion
613 of another pair of hairdressing scissors
2B, the retaining member
71, under the effect of the restoring force of the elastic member
72, will be engaged in the concave portion
613, as shown in Fig. 12. In this way, the two pairs of hairdressing scissors
2A and
2B are coupled and positioned relative to each other, and the plural pairs of hairdressing
scissors can be positioned relative to each other in the same way.
[0015] In the third embodiment, the positioning device
70 also can be directly arranged on the connecting structure
60, as shown in Fig. 13. The through hole
611 is defined in the connecting structure
60, and then the positioning device
70 is arranged in the through hole
611. This also can achieve the same positioning effect after a plurality of pairs of hairdressing
scissors
2 are coupled one another in a stacked fashion.
[0016] In addition, when the fixing member
73 of the positioning device
70 is fixed in the through hole
611 and is flush with the front side of the first blade
30 and/or the second blade
40, the front side of the fixing member
73 is formed a cavity
731, as shown in Fig. 14, the cavity
731 can be provided for positioning the retaining member
71, as shown in Fig. 15. Methods for fixing the aforementioned fixing member
73 in the through hole
611 include screwing, bell and spigot joint, gluing, soldering, etc. The fixing member
73 of the first and second embodiments is fixed in the through hole
611 by bell and spigot joint. The fixing member
73 of the third embodiment is fixed in the through hole
611 by screwing method. The fixing member
73 is formed with outer threads, and the through hole
611 is formed with inner threads, so that the fixing member
73 is screwed in the through hole
611.
[0017] The retaining member
71 in the first, second and third embodiments is optimally a ball, but it also can be
in other forms. The elastic member
72 in the first, second and third embodiments can be spring, reed or other elastic materials.
[0018] The operation of coupling and positioning the two pairs of hairdressing scissors
2A and
2B is as described in the first, second and third embodiments, and the two pairs of
hairdressing scissors
2A and
2B also can be separated from each other by a reverse operation to the coupling operation.
[0019] Therefore, the present invention is made up of the abovementioned structures, and
it truly has the following advantages as compared with the
prior art:
[0020] When assembling the plural pairs of hairdressing scissors
2 together, the protrusion
62 of a pair of hairdressing scissors
2A is engaged in the recess
61 of another pair of hairdressing scissors
2B. The protrusion
62 moves toward and presses the retaining member
71, so that the retaining member
71 will overcome the elastic force of the elastic member
72 and retract into the through hole
611. When the protrusion
62 traverses the retaining member
71 completely, and the top end of the protrusion
62 stops against the retaining walls
311 and
411 defined between the handle portions
31 and
41 and the recess
61. The elastic member
72 will be decompressed and push the retaining member
71 until it stops against the lower end of the protrusion
62. The top end and the lower end of the protrusion
62 are fixed by being pressed against the retaining walls
311, 411 and the retaining member
71, respectively, so that the plural pairs of hairdressing scissors
2 can be hold in position firmly, providing a best stable positioning effect for enabling
the hairstylist to hold the plural pairs of hairdressing scissors with one hand more
easily and stably.
[0021] While we have shown and described various embodiments in accordance with the present
invention, it should be clear to those skilled in the art that further embodiments
may be made without departing from the scope of the present invention.
1. A pair of hairdressing scissors (2) and a positioning device (70) thereof comprising:
a first blade (30);
a second blade (40) pivotally connected to the first blade (30);
at least a connecting structure (60) arranged on at least one of the first and second
blades (30, 40), a front surface and a rear surface of the connecting structure (60)
being formed a recess (61) and a protrusion (62), respectively, the connecting structure
(60) is defined a through hole (611) and a stop portion (612) formed at a front end
of the through hole (611), the front end of the through hole (611) connected to the
recess (61), between the recess (61) and the pair of hairdressing scissors (2) is
formed a retaining wall (311 or 411); and
at least a positioning device (70) disposed in the through hole (611) and including
a retaining member (71), an elastic member (72) and a fixing member (73), the retaining
member (71) and the elastic member (72) are sequentially placed in the through hole
(611), and then the fixing member (73) is inserted in the through hole (611), the elastic member (72) is biased between
the fixing member (73) and the retaining member (71) in such a manner that the retaining
member (71) partially protrudes out of the front end of the through hole (611) and is pressed against the stop portion (612);
when coupling two pairs of hairdressing scissors (2A, 2B) together, the protrusion
(62) of one pair of hairdressing scissors (2A) is engaged in the recess (61) of another pair of hairdressing scissors (2B), the protrusion (62) moves toward and presses the retaining member (71), when the protrusion (62) traverses
the retaining member (71) completely, and a top end of the protrusion (62) stops against the retaining wall (311 or 411), the retaining member (71) will partially project out of the front end of the through
hole (611) and stop against a lower end of the protrusion (62), so that the two pairs
of hairdressing scissors (2A, 2B) are positioned firmly.
2. The pair of hairdressing scissors (2) and a positioning device (70) thereof as claimed
in claim 1, wherein the retaining member (71) is optimally a ball.
3. A pair of hairdressing scissors (2) and a positioning device (70) thereof comprising:
a first blade (30);
a second blade (40) pivotally connected to the first blade (30);
at least a connecting structure (60) arranged on at least one of the first and second
blades (30, 40), a front surface and a rear surface of the connecting structure (60) being formed a recess (61) and a protrusion (62), respectively, the connecting structure (60) is defined a through hole (611), a front
end of the through hole (611) connected to the recess (61), between the recess (61) and the pair of hairdressing scissors (2) is formed a retaining wall (311 or 411); and
at least a positioning device (70) disposed in the through hole (611) and including
a retaining member (71) with a supporting rod (711), a positioning piece (74), a stop piece (75), an elastic member (72) and a fixing member (73), the retaining member (71) and the elastic member (72) are sequentially placed in the through hole (611), and then the fixing member (73) is inserted in the through hole (611), the positioning piece (74) and the stop piece (75) are mounted on the supporting rod (711), the positioning piece (74) is fixed in the through hole (611), the elastic member (72) is biased between the stop piece (75) and the fixing member (73), and then the stop piece (75) abuts against the positioning piece (74), so that the retaining member (71) will partially protrude out of the front end of the through hole (611) under the effect of the elastic member (72);
when coupling two pairs of hairdressing scissors (2A, 2B) together, the protrusion (62) of one pair of hairdressing scissors (2A) is engaged in the recess (61) of another pair of hairdressing scissors (2B), the protrusion (62) moves toward and presses the retaining member (71), when the protrusion (62) traverses the retaining member (71) completely, and a top end of the protrusion (62) stops against the retaining wall (311 or 411), the retaining member (71) will partially project out of the front end of the through hole (611) and stop against a lower end of the protrusion (62), so that the two pairs of hairdressing scissors (2A, 2B) are positioned firmly.
4. The pair of hairdressing scissors (2) and a positioning device (70) thereof as claimed in claim 3, wherein the retaining member (71) is optimally a ball.
5. A pair of hairdressing scissors
(2) and a positioning device
(70) thereof comprising:
a first blade (30);
a second blade (40) pivotally connected to the first blade (30);
at least a through hole (611) formed in at least one of the first and second blades (30, 40), a stop portion (612) formed at a rear end of the through hole (611), and a concave portion (613) formed at a front end of the through hole (611);
at least a connecting structure (60) arranged on at least one of the first and second blades (30, 40), the connecting structure (60) enables two pairs of hairdressing scissors (2) to be coupled each other in a stacked fashion; and
at least a positioning device (70) disposed in the through hole (611) and including a retaining member (71), an elastic member (72) and a fixing member (73), the retaining member (71) and the elastic member (72) are sequentially placed in the through hole (611), and then the fixing member (73) is inserted in the through hole (611), the elastic member (72) is biased between the fixing member (73) and the retaining member (71) in such a manner that the retaining member (71) partially protrudes out of the rear end of the through hole (611) under the effect of the elastic member (72) and is pressed against the stop portion (612);
when coupling two pairs of hairdressing scissors (2A, 2B) together, the retaining member (71) of one pair of hairdressing scissors (2A) is engaged in the concave portion (613) of another pair of hairdressing scissors (2B), so that the two pairs of hairdressing scissors (2A, 2B) are positioned firmly.
6. The pair of hairdressing scissors (2) and a positioning device (70) thereof as claimed in claim 5, wherein the fixing member (73) is flush with a front side of a blade (30 or 40) to which the fixing member (73) is connected, a front side of the fixing member (73) is formed a cavity (731) in which the retaining member (71) is to be engaged.
7. The pair of hairdressing scissors (2) and a positioning device (70) thereof as claimed in claim 5, wherein the through hole (611) is formed in the connecting structure (60).
8. The pair of hairdressing scissors (2) and a positioning device (70) thereof as claimed in claim 6, wherein the through hole (611) is formed in the connecting structure (60).
9. The pair of hairdressing scissors (2) and a positioning device (70) thereof as claimed in claim 5, wherein the retaining member (71) is optimally a ball.
Amended claims in accordance with Rule 86(2) EPC.
1. A pair of hairdressing scissors
(2) and a positioning device
(70) thereof comprising:
a first blade (30);
a second blade (40) pivotally connected to the first blade (30);
at least a connecting structure (60) arranged on at least one of the first and second blades (30, 40), a front surface and a rear surface of the connecting structure (60) being formed a recess (61) and a protrusion (62), respectively, the connecting structure (60) is defined a through hole (611) and a stop portion (612) formed at a front end of the through hole (611), the front end of the through hole (611) connected to the recess (61); and
at least a positioning device (70) disposed in the through hole (611) and including a retaining member (71), an elastic member (72) and a fixing member (73), the retaining member (71) and the elastic member (72) are sequentially placed in the through hole (611), and then the fixing member (73) is inserted in the through hole (611), the elastic member (72) is biased between the fixing member (73) and the retaining member (71) in such a manner that the retaining member (71) partially protrudes out of the front end of the through hole (611) and is pressed against the stop portion (612);
when coupling two pairs of hairdressing scissors (2A, 2B) together, the protrusion (62) of one pair of hairdressing scissors (2A) is engaged in the recess (61) of another pair of hairdressing scissors (2B), the protrusion (62) moves toward and presses the retaining member (71), when the protrusion (62) traverses the retaining member (71) completely, and a top end of the protrusion (62) stops against a retaining wall (311 or 411) defined between the handles portions (31, 41) and the recess (61), the retaining member (71) will partially project out of the front end of the through hole (611) and stop against a lower end of the protrusion (62), so that the two pairs of hairdressing scissors (2A, 2B) are positioned firmly.
2. The pair of hairdressing scissors (2) and a positioning device (70) thereof as claimed in claim 1, wherein the retaining member (71) is optimally a ball.
3. The pair of hairdressing scissors (2) and a positioning device (70) thereof as claimed in claim 1 or claim 2, wherein
the positioning device (70) further comprising a positioning piece (74) and a stop piece (75);
the retaining member (71) has a supporting rod (711);
the positioning piece (74) and the stop piece (75) are mounted on the supporting rod (711);
the positioning piece (74) is fixed in the through hole (611);
the elastic member (72) is biased between the stop piece (75) and the fixing member (73); and
the stop piece (75) abuts against the positioning piece (74), so that the retaining member (71) will partially protrude out of the front end of the through hole (611) under the effect of the elastic member (72).
4. The pair of hairdressing scissors (2) and a positioning device (70) thereof as claimed in claim 3, wherein the retaining member (71) is optimally a ball.
5. A pair of hairdressing scissors
(2) and a positioning device
(70) thereof comprising:
a first blade (30);
a second blade (40) pivotally connected to the first blade (30);
at least a through hole (611) formed in at least one of the first and second blades (30, 40), a stop portion (612) formed at a rear end of the through hole (611), and a concave portion (613) formed at a front end of the through hole (611) ;
at least a connecting structure (60) arranged on at least one of the first and second blades (30, 40), the connecting structure (60) enables two pairs of hairdressing scissors (2) to be coupled each other in a stacked fashion; and
at least a positioning device (70) disposed in the through hole (611) and including a retaining member (71), an elastic member (72) and a fixing member (73), the retaining member (71) and the elastic member (72) are sequentially placed in the through hole (611), and then the fixing member (73) is inserted in the through hole (611), the elastic member (72) is biased between the fixing member (73) and the retaining member (71) in such a manner that the retaining member (71) partially protrudes out of the rear end of the through hole (611 ) under the effect of the elastic member (72) and is pressed against the stop portion (612);
when coupling two pairs of hairdressing scissors (2A, 2B) together, the retaining member (71) of one pair of hairdressing scissors (2A) is engaged in the concave portion (613) of another pair of hairdressing scissors (2B), so that the two pairs of hairdressing scissors (2A, 2B) are positioned firmly.
6. The pair of hairdressing scissors (2) and a positioning device (70) thereof as claimed in claim 5, wherein the fixing member (73) is flush with a front side of a blade (30 or 40) to which the fixing member (73) is connected, a front side of the fixing member (73) is formed a cavity (731) in which the retaining member (71) is to be engaged.
7. The pair of hairdressing scissors (2) and a positioning device (70) thereof as claimed in claim 5, wherein the through hole (611) is formed in the connecting structure (60).
8. The pair of hairdressing scissors (2) and a positioning device (70) thereof as claimed in claim 6, wherein the through hole (611) is formed in the connecting structure (60).
9. The pair of hairdressing scissors (2) and a positioning device (70) thereof as claimed in claim 5, wherein the retaining member (71) is optimally a ball.