JPH0747177A - Scissors - Google Patents

Abstract

PURPOSE:To secure the strength of blades of scissors and widen the rotary angle thereof and make them compact. CONSTITUTION:In a pair of scissors 1 provided with a piece 2a of scissors composed of a blade 3a and a holder 4a fitted to the basal side and a piece 2b of scissors composed of a blade 3b and a holder 4b fitted to the basal side, a long hole 5 is formed in the longitudinal direction of the piece 2a of scissors and a guide pin 7 is fitted to the nearby position of the long hole 5 in the basal side of the blade 3a of the piece 2a of scissors and a guide pin 12 fitted loosely in the long hole 5 is provided in the piece 2b of scissors. A guide groove 9 extending diagonally against the longitudinal direction of the piece 2b of scissors and fitting loosely the guide pin 7 is formed near the guide pin 12 at the basal side of the blade 3b of the piece 2b of scissors. Either the guide pin 12 or the guide pin 7 is fastened come into mutual to contact of blades 3a, 3b of the pieces 2a, 2b.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to scissors.

[0002]

2. Description of the Related Art Conventionally, scissors of this kind shown in FIG. 8 have been proposed. That is, the blade 61a and its blade 6
A first elongated hole 64 is formed in the longitudinal direction of the scissor piece 63a at approximately the center of one scissor piece 63a formed by the grip portion 62a provided on the base end side of 1a. Then, in the vicinity of the first elongated hole 64 on the base end side of the blade body 61a, the second elongated hole 64 having an angle of about 45 ° with respect to the first elongated hole 64 is formed.
Slot 65 is formed. One end portion 65a of the second elongated hole 65 is formed on the back portion 66 side of the one scissor piece 63a, and the other end portion 65b of the second elongated hole 65 is formed on the blade portion 67 side of the blade body 61a. . The other end portion 65b of the second elongated hole 65 is formed obliquely so as to be closer to the grip portion 62a side than the one end portion 65a.

A first support pin 68 is inserted through the other scissor piece 63b, which is composed of the blade 61b and a grip portion 62b provided on the base end side of the blade 61b. Then, the first support pin 68 is inserted into the first elongated hole 64. Further, a second support pin 70 is provided on the back portion 69 side of the other scissor piece 63b, and the second support pin 7 is provided.
0 is inserted into the second elongated hole 65. In this case,
The first support pin 68 is caulked to thereby scissor pieces 63a, 6a.
The rotation of 3b is supported.

Further, when the blade bodies 61a and 61b of the scissors 63a and 63b are closed, the first support pin 68 is located at the base end portion 64a of the first elongated hole 64 and the second support pin 68 is formed. The pin 70 is located at the other end portion 65b of the second elongated hole 65. When the grip portions 62 a and 62 b are operated to separate the blade bodies 61 a and 61 b from each other, the first support pin 68 causes the base end portion 64 of the first elongated hole 64.
It is located from a to the other end 64b. On the other hand, the second support pin 70 has the other end portion 65b to the one end portion 65a of the second elongated hole 65.
Located in.

Therefore, when the other scissor piece 63b is fixed and the one scissor piece 63a is operated to open the blade body 61a with respect to the blade body 61b, the one scissor piece 63a moves to the other scissor piece 63b. It will move to the side of the grip 62b. When the blades 61a and 61b are opened to the maximum extent, the first support pin 68 is located at the other end 64b of the first elongated hole 64 and the second support pin 70 is located in the second elongated hole. 6
5 is located at one end 65a.

When the grips 62a and 62b are operated to close the blades 61a and 61b, the first support pin 68 is released.
Is located from the other end 64b to the base end 64a, and the second support pin 70 is located from one end 65a to the other end 65b.
Therefore, the one scissor piece 63a is operated with the other scissor piece 63b fixed, and the blade body 61b is moved relative to the blade body 61b.
When a is closed, the one scissor piece 63a rotates while sliding to the tip end side of the blade body 61a of the other scissor piece 63b. Although the object to be cut is cut by this rotation, the blade body 61a is pushed out with respect to the blade body 61b, so that a push-cut action occurs, and the blade body 61a and the blade body 61b improve the cutting effect of the object to be cut. It becomes possible.

[0007]

A space P is provided between the first and second elongated holes 64 and 65. Setting the interval P was troublesome. That is, if the interval P between the first and second elongated holes 64 and 65 is reduced,
Although the rotation angle of the blade edges of the blades 61a and 61b becomes large, if the space P is made too small, the thickness of this portion becomes thin and the strength decreases, so there is a problem that a space P must be provided to some extent. is there.

The interval P between the first and second elongated holes 64 and 65 is inversely proportional to the amount of rotation of the blade bodies 61a and 61b. That is,
The larger the distance P between the first and second elongated holes 64 and 65, the smaller the rotation angle of the cutting edge of the blade bodies 61a and 61b. In this case, the turning angles of the blade bodies 61a and 61b have to be increased. Further, in order to increase the rotation angle of the blade bodies 61a and 61b, the first and second elongated holes 64 and 65 are formed.
It is conceivable to increase the length of.

Here, since the first elongated hole 64 is formed in the longitudinal direction of the blade 61a, there is no problem in increasing the length of the first elongated hole 64. However, when the second elongated hole 65 is formed to be long, the thickness between the one end portion 65 a of the second elongated hole 65 and the back portion 66 side, the other end portion 65 b of the second elongated hole 65 and the blade portion 67. There is a problem that the thickness between the side and the side becomes thin and the strength decreases. Therefore, although it is necessary to increase the width direction of the blade 61b, there is a problem that the scissors themselves become large when the width direction is increased.

The present invention has been made in order to solve the above problems, and its purpose is to secure the strength of the scissors, increase the turning angle of the blade, and make it compact. Provide scissors.

[0011]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a first scissor piece comprising a blade body and a grip portion provided on the base end side of the blade body. And scissors provided with a second scissor piece composed of a blade body and a grip portion provided on the base end side thereof, in which a groove is formed in the longitudinal direction of the first scissor piece,
A guide pin is provided in the vicinity of the groove on the blade base end side of the first scissor piece, a guide pin that is loosely fitted in the groove is provided on the second scissor piece, and the blade base end of the second scissor piece is provided. A slanted groove is formed near the guide pin on the side of the second scissors, the slanted groove slantingly fitting the guide pin.
The gist of the invention is that either the guide pin or the guide pin is tightened so that the blade bodies of the first and second scissor pieces are brought into sliding contact with each other.

According to a second aspect of the present invention, when the blade bodies of the first and second scissor pieces are closed to each other, the groove and the oblique groove are formed so that a part of the groove and a part of the oblique groove overlap each other. The gist is that they are formed on the second scissors, respectively.

[0013]

According to the invention described in claim 1, when the holding portions of the first and second scissor pieces are operated to open and close the blade bodies of each other,
The guide pin of the first scissor piece moves along the oblique groove of the second scissor piece, and the guide pin provided on the second scissor piece moves along the groove. Therefore, the respective scissor pieces slide and rotate due to the respective movements of the guide pin and the guide pin. Therefore, the object to be cut can be cut while sliding. In addition, the groove and the oblique groove are the first and the second.
Since the scissors are respectively formed, it is possible to form the grooves and the oblique grooves in a state where the intervals between them are close to each other.

Therefore, it is possible to increase the rotation angle of the first and second scissors without forming the groove and the oblique groove long. According to the invention of claim 2, the first and second
When the blades of the scissors are closed to each other, part of the groove overlaps part of the oblique groove.

Therefore, it is possible to increase the rotation angle of the first and second scissors without increasing the length of the groove and the oblique groove.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment embodying the present invention will now be described with reference to FIGS.
It will be described with reference to FIG. As shown in FIGS. 1 and 2, the scissors 1 is composed of one and the other scissor pieces 2a and 2b as the first and second scissor pieces. One of the scissors pieces 2a is composed of a blade body 3a bent in a dogleg shape, and a synthetic resin gripping portion 4a formed at the base end portion of the blade body 3a. Similarly, the other scissor piece 2b has a V-shaped blade body 3b whose bending angle is gentler than that of the blade body 3a, and a synthetic resin gripping portion 4b formed at the base end portion of the blade body 3b. It consists of and.

A guide pin 7 is fixedly attached to the blade 3a on the side of the back 6 on the base end side so as to be adjacent to the elongated hole 5 as a groove. The guide pin 7 is projected on the back surface which is in sliding contact with the other scissor piece 2b.

Further, a circular support hole 8 is provided at the substantially center of the other scissor piece 2b. When the blade bodies 3a and 3b of the scissors pieces 2a and 2b are closed,
The support hole 8 overlaps the base end portion 5a of the elongated hole 5. Further, on the base end side of the blade body 3b, a guide groove 9 is provided as a diagonal groove adjacent to the support hole 8 and oblique to the longitudinal direction of the other scissor piece 2b. The base end portion 9a of the guide groove 9 is formed on the blade portion 10 side of the blade body 3b, and the other end portion 9b is formed on the back portion 11 side of the blade body 3b. Then, the base end portion 9a of the guide groove 9 and the grip portion 4b
The guide groove 9 is formed obliquely so that the distance between the other end 9b and the grip portion 4b is longer than the distance up to.

A guide pin 7 provided on the blade portion 3a of the one scissor piece 2a is inserted into the guide groove 9.
The guide pin 7 is configured to move along the guide groove 9. A guide pin 12 is inserted into the slot 5 from the surface of the one scissor piece 2a. A head portion 13 is formed on the guide pin 12, and the head portion 13 is engaged with the outer peripheral edge of the elongated hole 5. The guide pin 12 is inserted through the elongated hole 5 and the support hole 8 of the blade 3b. And
The support pin 12 is crimped to form a pair of scissor pieces 2a,
2b is rotatably supported. A spacer 14 made of resin is provided between the head 13 of the support pin 12 and the blade 3a so that the head 13 and the outer peripheral edge of the elongated hole 5 can be smoothly slid. ing.

As shown in FIGS. 2 and 3, when the pair of scissor pieces 2a and 2b are in the closed state, the support pin 12 is located at the tip 5b of the elongated hole 5 and the guide pin 7 is located at the guide groove 9. Each of them is located at the base end 9a. At this time, the angle between the longitudinal centerline L1 of the long hole 5 and the longitudinal centerline L2 of the guide groove 9 is 45 °. Further, when the pair of scissors pieces 2a and 2b are in the closed state, the base end portion 5a of the elongated hole 5 overlaps the substantial center of the guide groove 9.

Further, the blade body 3 of the pair of scissors pieces 2a, 2b.
The pair of scissors 2a, 2b from the closed state of a, 3b.
In order to open the blade bodies 3a and 3b of No. 1, one scissor piece 2a is operated while the other scissor piece 2b is fixed. Then, as shown in FIG. 6, the guide pin 7 is configured to move from the base end portion 9a of the guide groove 9 toward the tip end portion 9b, and at the same time, the support pin 12 is moved toward the tip end portion of the long hole 5. It is adapted to move from 5b toward the base end 5a. At this time, one scissor piece 2a is rotated with respect to the other scissor piece 2b while sliding toward the tip side of the other scissor piece 2b.

When the blade bodies 3a, 3b of the scissors pieces 2a, 2b are in a completely opened state, the support pin 12 is formed.
Is located at the base end 5a of the elongated hole 5, and the guide pin 7 is located at the other end 9b of the guide groove 9.

Further, the blade body 3 of the pair of scissors pieces 2a, 2b.
The pair of scissor pieces 2a and 2b from the state where a and 3b are opened.
In order to bring the blade bodies 3a, 3b of No. 2 into the closed state, one scissor piece 2a is operated while the other scissor piece 2b is fixed. Then, the guide pin 7 is fixed to the other end 9b of the guide groove 9.
To move to the base end 9a,
At the same time, the support pin 12 is adapted to move from the proximal end portion 5a of the elongated hole 5 toward the distal end portion 5b.

At this time, one scissor piece 2a is rotated with respect to the other scissor piece 2b while sliding toward the base end side of the other scissor piece 2b. Therefore, one scissor piece 2a is pulled with respect to the other scissor piece 2b, so that a cutting action is generated between the blade portions 3a and 3b, so that the object to be cut is cut off at the same time as cutting.

Next, the operation of the scissors configured as described above will be described. As shown in FIGS. 2 and 3, when the blade bodies 3a and 3b of the pair of scissor pieces 2a and 2b are closed, the support pin 12 is located at the tip 5b of the elongated hole 5 and the slide pin 7 is It is located at the base end 9 a of the guide groove 9. In order to make the blade bodies 3a, 3b open from this state, the gripping portions 4a, 4 of the pair of scissor pieces 2a, 2b are held.
Operate b. At this time, as shown in FIG. 6, when the other scissor piece 2a is operated while the other scissor piece 2b is fixed, the support pin 12 moves from the distal end portion 5b of the elongated hole 5 toward the proximal end portion 5a. , The slide pin 7 moves from the base end 9a of the guide groove 9 toward the other end 9b.

Therefore, one scissor piece 2a slides toward the tip side of the blade 3b with respect to the other scissor piece 2b, and the blade 3a rotates while being separated from the blade 3b. And
As shown in FIGS. 4 and 5, when the support pin 12 is located at the base end portion 5a of the elongated hole 5 and the slide pin 7 is located at the other end portion 9b of the guide groove 9, the pair of scissor pieces 2a, 2b is formed. Rotation of the blade bodies 3a and 3b is restricted.

From this state, the gripping portions 4a, 4b of the pair of scissors pieces 2a, 2b are operated in order to close the blade bodies 3a, 3b to each other. At this time, the other scissor piece 2
If you operate one scissor piece 2a with b fixed,
The support pin 12 moves from the base end portion 5a of the long hole 5 toward the tip end portion 5b, and the slide pin 7 moves toward the other end portion 9 of the guide groove 9.
It moves from b toward the base end 9a.

Therefore, one scissor piece 2a slides toward the grip portion 4b side with respect to the other scissor piece 2b, and the blade 3
a rotates while sliding on the blade 3b. And in Figure 2,
As shown in FIG. 3, the support pin 12 has the tip portion 5 b of the long hole 5.
When the slide pin 7 is located at the base end portion 9a of the guide groove 9, the blade portion 3 of the pair of scissors pieces 2a and 2b is located.
Rotation of a and 3b is restricted.

At this time, the object to be cut can be cut by the blades 3a, 3b of the pair of scissors pieces 2a, 2b, but one scissors piece 2a can be cut by the cooperation of the support pin 12 and the guide pin 7. The scissor piece 2b is cut off.

Therefore, the blade bodies 3a and 3b can generate a pulling-off action, and the object to be cut can be smoothly cut. The long hole 5 is formed in the blade portion 3a of the one scissor piece 2a, and the guide groove 9 is formed in the blade portion 3b of the other scissor piece 2b. Therefore, the elongated hole 5 and the guide groove 9 can be formed as close as possible within a range in which the guide pin 12 and the guide pin 7 do not interfere with each other.

Therefore, if the slot 5 and the guide groove 9 are brought as close as possible to each other, the turning angle of the blade portions 3a and 3b can be increased, and it is not necessary to lengthen the slot 5 and the guide groove 9. . As a result, the guide groove 9 formed in the other scissor piece 2b can be shortened, so that the wall thickness can be secured and the strength of the blade portion 3b can be improved.

Further, since the guide groove 9 can be shortened, as a result, the length of the blade portion 3b in the width direction can be shortened, and the scissors 1 can be made compact accordingly. Although the present embodiment has been described in detail above, the present invention can be implemented by being modified into another aspect.

In this embodiment, the pair of scissor pieces 2a, 2b are crimped by the support pin 12 so that the blade bodies 3a, 3b are in sliding contact with each other. Alternatively, the guide pin 7 may be caulked so that the blade bodies 3a and 3b of the pair of scissors pieces 2a and 2b are slidably contacted with each other, and the support pin 12 may be simply guided to form the elongated hole 5. Further, the support pin 12 and the guide pin 7 may be crimped together so that the blade bodies 3a and 3b of the pair of scissor pieces 2a and 2b are in sliding contact with each other.

Further, in this embodiment, the guide pin 7
Although the guide groove 9 for guiding the is transparently provided, it is also possible to form it simply as a groove shape. When the guide pin 7 is swaged to support the scissors pieces 2a and 2b and the support pin 12 is simply guided, the slot 5 may be formed in the slot.

Further, in the present embodiment, the guide pin 7 is provided as a separate body, but it is also possible to form this guide pin 7 integrally with the blade body 3a. In the present embodiment, the cutting object is cut by the cutting operation of the blade body 3a of the one scissor piece 2a and the blade body 3b of the other scissor piece 2b.

In addition to this, the following configuration is also possible. As shown in FIG. 7, the guide groove 9 is formed in the blade body 3b so that the guide groove 9 does not overlap the base end portion 5a of the elongated hole 5. At this time, unlike the above embodiment, the guide groove 9 is formed in an oblique shape so that the distance from the other end 9b to the grip 4b is shorter than the distance from the base end 9a of the guide groove 9 to the grip 4b. Has been done. In this case also, the blade 3
When a and 3b are closed to each other, the angle between the longitudinal centerline L1 of the slot 5 and the longitudinal centerline L2 of the guide groove 9 is 45 °.

Further, the blade body 3 of the pair of scissors pieces 2a, 2b.
When a and 3b are closed, the guide pin 12 is located at the base end portion 5a of the elongated hole 5, and the guide pin 7 is located at the other end portion 9b of the guide groove 9.

Then, with the blade bodies 3a, 3b of the pair of scissors pieces 2a, 2b closed, one scissors piece 2a is operated with respect to the other scissors piece 2b. Then, one scissor piece 2a rotates while sliding to the grip portion 4b side of the other scissor piece 2b by the guide pin 12 and the guide pin 7, so that the blade body 3a slides to the grip portion 4b side and the blade portion 3b. Rotate with respect to.

From this state, one scissor piece 2a is operated again. Then, the scissors piece 2a on one side is guided by the guide pin 12
And the guide pin 7 slides and rotates toward the blade tip side of the blade portion 3b of the other scissor piece 2b to rotate the blade body 3
a and 3b are in sliding contact with each other.

At this time, since the blade body 3a is pressed against the blade body 3b, the blade body 3a, 3b can smoothly cut the object to be cut. In addition, the present invention can be freely modified and implemented without departing from the spirit of the invention.

[0041]

As described above in detail, according to the present invention, since the groove and the oblique groove are respectively formed in the scissors, the interval between the groove and the oblique groove can be reduced, and the groove and the oblique groove can be made smaller. The length of can be shortened. As a result, the amount of rotation of the blade can be increased, the strength of the scissors can be improved, and the scissors can be made compact.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a configuration of scissors according to the present invention.

FIG. 2 is a front view of scissors in which the blade portions of a pair of scissor pieces are closed to each other.

FIG. 3 is a bottom view of the scissors with the blade portions of the pair of scissors pieces closed to each other.

FIG. 4 is a front view of the scissors showing a state where the blade portions of the pair of scissors pieces are most opened.

FIG. 5 is a bottom view of the scissors showing a state where the blade portions of the pair of scissors pieces are most opened.

FIG. 6 is a front view showing a state in which the blade portions of the pair of scissors pieces are partially opened.

FIG. 7 is a front view of scissors showing another example.

FIG. 8 is a partial front view showing the configuration of conventional scissors.

[Explanation of symbols]

1 ... Scissors, 2a ... One scissor piece as a first scissor piece, 2b ... Another scissor piece as a second scissor piece, 3
a, 3b ... Blade body, 4a, 4b ... Gripping portion, 5 ... Long hole as groove, 7 ... Guide pin, 9 ... Guide groove as oblique groove, 1
2 ... Guide pin

Claims (2)

[Claims] 1. A first scissor piece composed of a blade body and a grip portion provided on the base end side thereof, and a second scissor composed of a blade body and a grip portion provided on the base end side thereof. Scissors provided with a piece, wherein a groove is formed in the first scissor piece in the longitudinal direction thereof, and a guide pin is provided in the vicinity of the groove on the blade body proximal end side of the first scissor piece. The scissor piece is provided with a guide pin that is loosely fitted in the groove, and the second scissor piece is inclined near the guide pin on the blade base end side with respect to the longitudinal direction of the second scissor piece. A scissors characterized in that a slant groove for loosely fitting a pin is formed, and either the guide pin or the guide pin is tightened so that the blade bodies of the first and second scissors pieces are brought into sliding contact with each other. 2. The groove and the slant groove are respectively formed on the first and second scissor pieces so that when the blade bodies of the first and second scissor pieces are closed to each other, a part of the groove and a part of the slant groove overlap each other. The scissors according to claim 1, wherein the scissors are formed.