JPH0726569Y2 - Blind rivet cutting tool - Google Patents

Description

[Detailed Description of the Invention] [Outline] The present invention relates to a blind rivet cutting tool that has been caulked, and in particular, relates to a blind rivet cutting tool that is made of a non-ferrous light metal pipe, and is intended to safely and easily cut the caulking blind rivet. , Consisting of a pair of thin metal plates with holes through which the blind rivet is inserted, and the holes of the thin metal plates are laid on one axis and inserted under the neck of the blind rivet, and both are caulked and strongly pinched from both sides. Configure to shear.

[Industrial application field]

The present invention relates to a blind rivet cutting tool that is caulked, and more particularly to cutting a blind rivet made of a non-ferrous light metal tube.

Blind rivets (JIS B010) are suitable for assembling communication devices because of their good workability and low cost, and because they do not need to be threaded and can easily fix resin plates and the like.
1-1974 3.29 number 2908) is often used. However, since the blind rivet that has been caulked is removed by shaving the flange portion with a drill or the like, it takes time and is troublesome, so a tool that can be safely and easily cut is desired.

[Conventional technology]

In the past, when assembling communication devices, etc., for example, when fixing circuit boards, air-cooling fans, batteries, etc., which may be maintenance-replaced, with blind rivets, it takes time to remove them, so they are fixed with mounting screws and other parts are blind. It is caulked with rivets.

[Problems to be solved by the device]

However, according to the above-mentioned assembly structure, when the mounting screw is used, the number of assembling steps is larger than that of the blind rivet, and the blind rivet that has been caulked is removed by scraping or the like, which may cause a short circuit failure due to cutting chips. There was a problem that there was.

In view of the above problems, it is an object of the present invention to provide a blind rivet cutter capable of safely and easily cutting a crimped blind rivet.

[Means for Solving the Problems]

In order to achieve the above object, the blind rivet cutting tool of the present invention comprises a pair of metal thin plates having holes through which the blind rivets are inserted, and the holes of the metal thin plates are stacked on one axis to form a blind rivet. It is inserted under the neck and is caulked together, and is strongly pinched from both sides for shearing.

[Action]

By stacking the holes of a pair of thin metal plates and inserting them under the blind rivet but not stopping them, when it becomes necessary to cut, the thin metal plates are pinched from both sides with pliers etc. The edges of the holes act as blades due to frictional deviation, and a blind rivet made of a non-ferrous light metal tube such as an aluminum material can be cut by shearing.

〔Example〕

Hereinafter, the gist of the present invention will be described in detail based on the embodiments shown in the drawings.

As shown in the perspective view of FIG. 1, the cutting tool 1 of the first embodiment is provided with a hole 1a-1 through which a blind rivet is inserted and bent into a right angle L shape (so that it can be easily pinched later with pliers or the like. 0.25mm thick stainless steel plate for spring,
Alternatively, a pair of thin metal plates 1a made of quenched tool steel or the like are symmetrically combined and configured.

When this cutting tool is used for cutting in the future after swaging the blind rivet, each hole 1a-1 of the cutting tool 1 (a pair of metal thin plates 1a) is used as shown in the side sectional view of the main part of FIG. Is laid on one axis and is inserted underneath the flange 2a-1 of the blind rivet 2 and the mandrel 2b is left in the direction of the upper arrow A from the rivet body 2a, leaving the mandrel head 2b-1 and withdrawn and fastened with the fastening plate 3. deep. When the blind rivet 2 is cut, the L-shaped bent portions are strongly pinched in the direction of arrow B with pliers or the like from both sides and cut by shearing.

In addition, the second embodiment applying the first embodiment is the third embodiment.
The cutting tool 10 has a thickness of 0.
A hole 10a-1 for inserting a blind rivet into both ends of a metal thin plate 10a such as a 25 mm spring stainless steel plate, and a square-shaped hole 10a-2 for allowing a blind rivet to pass through and bending easily are formed in an intermediate portion. Both ends are bent at a right angle in a U-shape, bent in the direction of the arrow C into a lube, and the holes 10a-1 at both ends are superposed on one axis as shown in the perspective view of FIG. 3 (b).

Next, an example of using the cutting tool of the second embodiment for a blind rivet will be described. As shown in the exploded perspective view of the main part of FIG. 4 and the sectional side view of the assembly thereof in FIG. 5, when fixing the circuit board 5 to the chassis 4, the mounting hole 4a formed in the cut-and-raised mounting part 4a of the chassis 4 is attached. The mounting hole 5a of the circuit board 5 is placed on -1 and the blind rivet 2 passed through the cutting tool 10 is inserted into the mounting holes 5a and 4a-1, and the core shaft is pulled out and caulked. Then, the cover 6 is put on the chassis 4. At that time, the inner surface of the cover 6 elastically contacts with the bending portion 10a-3 of the cutting tool 10 to also serve as ground conduction.

In this way, by overlapping the holes of the cutting tool and crimping together with the blind rivet, the cutting tool can be easily sandwiched without cutting chips, and in the case of the second embodiment, the cutting tool The flexible portion can also be used to serve as ground conduction.

[Effect of device]

As described above in detail, according to the present invention, the blind rivet can be easily used even in the maintenance target part, the workability can be improved, and the safety is secured without using a drill for cutting the blind rivet. In addition, it has a practically extremely useful effect in that it can be easily grounded to the chassis.

[Brief description of drawings]

FIG. 1 is a perspective view of a first embodiment according to the present invention, FIG. 2 is a side sectional view of an essential part showing a use example of FIG. 1, and FIGS. FIG. 4 is an exploded perspective view of an essential part showing an example of use of FIG. 3, and FIG. 5 is an assembled side sectional view of FIG. In the figure, 1 and 10 are cutting tools, 1a and 10a are thin metal plates, 1a-1 and 10a-1 are holes, 2 is a blind rivet, 10a-2 is a punch hole, and 10a-
Reference numeral 3 indicates a bending portion.

Claims (2)

[Scope of utility model registration request] 1. A pair of thin metal plates (1a) having holes (1a-1) for inserting blind rivets (2),
The holes (1a-1) of the thin metal plate (1a) are uniaxially stacked, inserted under the neck of the blind rivet (2), and both are caulked together and strongly pinched from both sides for shearing. Blind rivet cutting tool. 2. The hole (10a-1) according to claim 1 is bored at both ends and is bent into a loop so that the both holes (10a-1) are superposed on one axis, and the bent portion (10a-3) is formed. A blind rivet cutting tool, characterized in that a blind rivet (2) is provided with a hole (10a-2).