JPS6377666A - Plier - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to pliers (grip tools) for holding and mounting O-rings, E-rings, etc. in the assembly process of products.

[Prior art]

- When attaching an OIJ song E-ring, C-ring, gourd-shaped ring, etc. to a mechanism for preventing removal between parts or an oil painting mechanism, the tip of the tool (pliers) should be placed on the inside diameter of the attachment ring. The claw is inserted, the handle is closed, the tip is opened, and the ring is held in place (fitting).For example, the inner diameter of the ring is usually smaller than the outer diameter of the shaft to which it is attached, and The tool is also configured such that the tip (claw) is oriented in the opening direction with respect to the closing direction of the handle. Furthermore, the opening/closing member (claw) at the tip has a shape that corresponds to the ring to be assembled.

[Problem that the invention seeks to solve]

Conventionally known tools of this type (commonly referred to as snaps, rings, and pliers) hold the ring to be incorporated in the claw at the tip and attach it to the mounting member. It is held open by inserting the claws at the tips of each into holes formed on the inner circumferential side of both open ends, or into holes formed in both open ends.

At this time, the open end of the ring is forced outward and spread (opened), so many rings lose their balance as they open, and do not open horizontally but bend upwards. There were many cases in which the ring would come off (fly off) from the tip of the toe, and the ring would open more than necessary.In other words, if force was applied that exceeded the restoring force of the ring, the ring would break or bend, resulting in defects. .

[Means for solving problems]

This invention solves the above-mentioned drawbacks (problems). In other words, a support rod is provided in parallel with the claw at the tip of the tool that opens and holds the ring, and the claw supports and stabilizes the top surface (curved surface) of the ring when the ring is opened and held, and also prevents the ring from opening when the ring is held open. To provide a tool (pliers) which can be quickly and accurately installed and prevents defects by providing a restriction means between the handles for regulating the holding state.

〔Example〕

The structure and operation of this invention will be explained based on one embodiment.

Figure 1 is a perspective view of pliers embodying this invention;
The figure is a perspective view showing the shape of the ring holding part at the tip of the pliers shown in FIG. 1, and FIG. 3 is an enlarged perspective view showing the ring held at the tip of the pliers shown in FIG. be.

The two bow-shaped numerals 1.2 shown in FIG. 1 are configured to be grippable so that the parts can be opened and held with handles. That is, a fulcrum hole is formed near the tip of each of them, and a fulcrum bolt 3 is inserted through the fulcrum hole, so that the fulcrum hole can be freely rotated.

Further, the tips of the handles 1 and 2 are notched in the left and right direction, and the base ends of the component holding claws 7 and 8 having stepped portions 5 and 6 formed corresponding to the shape of the ring to be assembled 4 are inserted in a sandwich-like manner. They are each fixed with rivets 9.

Furthermore, grooves 10° 11 are formed on the inside of the handle 1.2, and each end of a spring 12 made of curved elastic material is attached to a component holding claw 7.8 provided near the support bolt 3. A component holding claw 7.8 at the tip is always placed in the recess 13.14 at the extended end.
It is arranged so that it can be closed and slid.

A screw hole is formed in the upper end surface of the support shaft bolt 3, and a screw 15 is formed.
are screwed together. This screw 15 is formed larger than the inner diameter of the ring 4, and has a rectangular shape that supports the surface of the ring 4 when it is installed in a groove 17 formed on the circumference of the shaft 16 on which the ring 4 is installed (Fig. 3). This is for attaching a support rod 19 having an adjustment notch 18 formed thereon. This support rod 19
is a mounted ring 4 which is opened and held by the component holding claws 7.8.
It has a structure that can be adjusted in the axial direction according to the wall thickness.

Further, the open base end of the handle 1.2, that is, the open end of the grip forming part, is configured to be removable in order to adjust the distance between the ring 4 and the component holding claw 7.8 depending on the diameter of the ring 4. The proximal end of a limiting means for adjusting the opening width of the tip holding claws 7 and 8 is fixed in the inner groove 11 of the holding claw 21 . This restriction means
A nut-shaped adjustment member 22 with a screw hole formed therein is integrally fixed by welding or the like.

An adjustment rod 23 having a thread at one end is rotatably screwed into the screw hole of the adjustment member 22. Further, a nut 24 for preventing the adjustment rod 23 from buckling is screwed into the threaded portion of the adjustment rod 23. The other end of the adjustment rod 23 is configured to abut within the inner groove 10 of the end 20 of the handle 1.

The operation of the pliers of the present invention having the above structure will be explained below.

First, a gourd-shaped ring 4 shown in FIG.
．． When the stepped portion 5.6 of the ring 8 is inserted, the tip end surface of the support rod 19 also comes into contact with the surface of the ring 4 facing the insertion position of the component holding claw 7.8 of the ring 4, that is, the opening side.

When force is applied to the handles 1 and 2 in the gripping direction (closing inward), the component holding claws 7.8 open against the spring 12, and at the same time,
In addition to contacting the inner periphery of the ring 4, the ends 2 of the handles 1 and 2
When the opening limiting means 25 disposed at 0.21 is squeezed (closed) until it abuts, the component holding pawl 7.8 is held and lifted at the same time as the ring 4 is opened, and as shown in FIG. It is brought onto the upper end surface of the member (shaft 26) and fitted into the shaft 26. Then, by releasing the grip, it is pushed down and fitted into the groove 17.

〔effect〕

In the present invention having the above-mentioned structure, by providing the ring support rod 19 in parallel with the component holding claws 7.8, the ring 4 does not fly away from the component holding claws 7.8, and stable work can be achieved. Further, by providing the means for restricting the opening of the ring 4, there is no damage caused by opening the ring 4 too much, and the effect of accurately mounting the ring 4 is extremely remarkable.

[Brief explanation of the drawing]

1 is a perspective view showing an embodiment of the present invention, FIG. 2 is a perspective view showing the structure of the component holding means shown in FIG. 1, and FIG. 3 is a perspective view showing the component holding means at the tip of FIG. 1. FIG.

Claims (5)

[Claims] (1) Plier claws that open when the handle is closed,
Pliers characterized by having means for supporting parts in parallel. (2) Plier claws that open when the handle is closed;
A pair of pliers, characterized in that means for supporting the parts are provided in parallel, and means for restricting the opening of the pawls is provided in the handle portion. (3) A pair of pliers in which the claw opens when the handle is closed, and the handle is provided with means for restricting the opening of the claw. (4) The supporting means is characterized in that one end thereof is attached to the rotational fulcrum of the handle, and an adjusting means is provided for adjusting according to the insertion of a claw or the thickness of the part, etc. The pliers described in Items 1 and 2. (5) The pliers according to claim 2 or 3, wherein the opening width limiting means is provided so as to be adjusted depending on the size of the component or the size of the opening width.