JPH0753905Y2 - stapler - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stapler, and more particularly to a punching member forming a part thereof.

[0002]

2. Description of the Prior Art A typical punching member 41 of a stapler has a hole 42 formed therein for fitting with a projection 43 provided on an upper member 40 of the stapler, as shown in FIG. It has an extension 44 depending from the punching member for striking the needle.

Another type of punching member is shown in FIG. 5, in which cap 55 is rotatably coupled to stapler upper member 50 and has a flange 56 formed at its free end. The upper member 50 has a pair of L-shaped protrusions 51 formed at its free end and a spring 57. The punching member 52 has an opening 53 that engages with the flange 56, and a pair of protrusions 54 that extend outward from the side to engage with the protrusion 51. It is designed to be held in the position.

[0004]

However, in the former prior art, the punching member 41 and the extension portion 44 are used.
Since the extension part 44 is integrally formed and the extension part 44 is bent from the punching member 41, generally, the punching member 41 does not have sufficient strength, and the extension part 44 does not have a long life.

Further, in the latter technique, the punching member 52 cannot obviously be firmly held at a predetermined position, so that the punching member 52 is easily loosened, and it can be easily performed when the position with the stapler needle is not aligned. It will be damaged.

Therefore, an object of the present invention is to provide a stapler in which a punching member is firmly and firmly fixed.

[0007]

In order to achieve the above object, the gist of a stapler according to the present invention is to provide an upper member having a free end and a space between the upper member and the free end of the upper member. A pair of wall portions having a gap formed therein, at least one rib formed on one of the wall portions, and a first member fitted into the gap and attached between the rib and the other of the wall portions. A punching member having an edge and two ends having legs, each of which has a tip formed to fit with the upper member, whereby the punching member is predetermined. To be held firmly in position.

[0008] Here, the upper member may be provided with a pair of recesses which fit into the distal end portions of the respective leg portions in the gap, and each wall portion has a wall for reinforcement. You may make it provide at least one support | pillar fixed to the part and arrange | positioned outside the said clearance gap.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to the drawings.

1 to 3, the punching member 3 is shown.
Reference numeral 0 is for tapping a stapler needle and is fixed to a free end portion of an upper member 20 which constitutes a part of the stapler 10. This stapler has a cap 11 rotatably fixed to an upper member 20, and a flange 12 formed integrally with a free end portion of the cap 11. The upper member 20 has a pair of wall portions 21, and the wall portions 21 are arranged so as to face each other in parallel with the free end portion of the upper member 20, and a gap 22 is formed between the wall portions 21. ing. Further, at least one reinforcing column 25 is formed on each wall 21, and the column 25 is arranged outside the gap 22. Further, a pair of ribs 23 are integrally provided on the one wall portion 21, and the ribs 23 are arranged in the gap 22.

The punching member 30 has an opening 31 formed for engaging the flange 12 of the cap 11, and also has a first edge 34 fitted in the gap 22 and a second edge for hitting the stapler needle. 35, the punching member 30 is adapted to be securely attached between the rib 23 and one of the walls 21. First edge 3
4 is provided with two ends integrally formed therewith, with legs 32 extending away from the first edge 34, each leg 32 extending outwardly. It has a free end with 33. As best shown in FIG. 3, the gap 22 is provided with a pair of recesses at positions facing each other so as to fit with the distal end portions 33 of the leg portions 32, and the recesses allow the punching member 30 to be firmly held at a predetermined position. Can be held at the same time and is prevented from coming off from the gap 22.

Since the upper member 20 is usually made of a plastic material, the recess for receiving the tip 33 of the leg 32 is automatically formed when the leg 32 of the punching member 30 is pushed into the gap 22. Is formed.

Thus, the punching member is firmly held by the upper member of the stapler and does not loosen.

[0014]

As described above, according to the present invention,
By arranging a pair of wall parts in parallel at the free end of the upper member of the stapler, forming at least one rib on one of the wall parts, and fitting a punching member into the gap formed between the wall parts, the ribs are formed. Since the edge of the punching member is sandwiched between the wall and the other of the wall portions, and legs having further tip portions are formed at both ends of the edge and the tip portions are attached to the upper member, the punching member is the upper member of the stapler. It is held firmly in place and never loosens.

[Brief description of drawings]

FIG. 1 is an exploded view of a portion of a stapler having a punching member according to the present invention.

FIG. 2 is a partial plan view showing a part of the upper member of the stapler of the above.

FIG. 3 is a view in which the upper member is cut by the end surface of the punching member in the above.

FIG. 4 is a cross-sectional view illustrating a conventional typical punching member.

FIG. 5 is a partially exploded view showing another type of conventional punching member.

[Explanation of symbols]

 10 Stapler 20 Upper member 21 Wall part 22 Gap 23 Rib 25 Strut 30 Punching member 32 Leg part 33 Tip part 34 First edge

Claims (3)

[Scope of utility model registration request] 1. An upper member having a free end, a pair of wall portions arranged in parallel to the free end of the upper member and having a gap therebetween, and at least one of the wall portions. A rib and a first edge fitted in the gap and attached between the rib and the other of the wall portions,
A punching member having two ends with legs, each leg having a tip formed to mate with the upper member, thereby securely holding the punching member in place. A stapler characterized by the following. 2. The stapler according to claim 1, wherein the upper member has a pair of recesses formed in the gap so as to be fitted into the distal end portions of the respective leg portions. 3. The stapler according to claim 1, wherein each of the walls has at least one strut fixed to the wall for reinforcement and arranged outside the gap.