JPS5852811Y2 - wire stripper - Google Patents

Description

[Detailed description of the invention] This invention is an improvement of the wire stripper used for stripping the outer skin of electric wires whose core wires are covered with insulating material such as vinyl. With the spring mounted on the pivot, the installation is simple and easy to obtain.
However, once it is installed, it will not come off accidentally, and it is designed to prevent unnecessary loads from being placed on the pivot when opening.

The details will be described below with reference to the embodiment shown in the drawings.A pair of left and right opening/closing plates 1, 1 and the bending arms 3.3 of the handles 2, 2 are pivotally connected by a pivot 4, and a fixed clamping piece 5 is attached to one opening/closing plate. and a movable clamping piece 6, and a fixed stabbing blade 7 and a movable stabbing blade 8 are set opposite to each other on the other opening/closing plate.
, 9 connected to the handles 2, 2, the pivot 4
An opening/closing plate return spring 10 with the same winding diameter is attached to the opening/closing plate return spring 10 at one end 10a, and a cutout groove 1 is formed in the opening/closing plate and the shaft boss 1a of the body.
1, a locking stepped portion 1 having the other end 10b formed on the other opening/closing plate
2.

The pivot 4 passes through the hollow tube shaft 4a through the handles 2, 2 and the diagonal portion of the opening/closing plate 1.1, and is fixed from both ends with screws 4b, 4c so that it cannot be pulled out to either the left or the right.

As shown in the illustrated example, the opening/closing plate return spring 10 has about one and a half to two turns, one end 10a is bent at right angles toward the center, and the other end 10b is extended in the tangential direction to serve as a locking leg. .

The shaft boss 1a is integral with the opening/closing plate on the right side in FIG. 1, and a notch groove 11 is formed on the outer periphery of the shaft boss 1a toward the center.

Therefore, since the notch groove 11 is formed in the radial direction of the shaft boss 1a, it can be made relatively deep if the diameter is made large.

16 is the stop lever and 17 is its return plate.

When the handles 2, 2 are grasped at the same time, the spring 13 is compressed and the handles move toward the closing direction, so that the movable clamping piece 6 and the movable stabbing blade 8 are connected via the connecting rods 9, 9 whose upper end shoulders are pivotally connected with pins 14 and 14. is pulled down to clamp the electric wire 15 on one hand and cut the outer skin on the other hand, as shown in FIG.

If you continue to firmly grasp the handles 2, 2 and operate them in the closing direction, the handles 2, 2 and the opening/closing plates 1, 1 will connect and open the opening/closing plates 1.1 to the left and right, so that the electric wire 15 will be connected to the core wire 15a as shown in Fig. 3. The outer skin 15b is peeled off leaving behind.

When the opening/closing plates 1, 1 begin to open left and right, the opening/closing plate return spring 10 wound around the pivot 4 is compressed, and elasticity in the closing direction is applied to both opening/closing plates 1, 1; when the handle 2°2 is released. Handle 2,
2 is restored by the spring 13, the opening/closing plates 1, 1 are returned by the elasticity of the opening/closing plate return spring 10.

Conventionally, the spring for returning the opening/closing plate was generally a spiral spring made of a single wire spring wound spirally on the same plane, as shown in Figure 6. Or, leg opening degree α
There is a problem with the accuracy of the spring constant and the accuracy of bending the inner and outer locking parts parallel to each other at 90 degrees, and the spring constant is not constant.
Since the locking legs at both ends bent at 90 degrees are parallel to the pivot, the thickness of the opening/closing plate is limited and the locking holes cannot be formed deep. The inner peripheral portion abuts against each other and a twisting force is applied at this fulcrum, which has the drawback of causing considerable trouble in the operation of the tool.

The present invention addresses such conventional drawbacks, and as described above, the shaft boss 1a of the pivot shaft 4 has a winding diameter of the same, one end extending in the tangential direction, and the other end bent in the radial direction. - An opening/closing plate return spring consisting of a two-turn coil spring is attached, and the locking leg 10a at one end is engaged with the notch groove 11 formed in the outer circumferential radial direction of the shaft boss 1a integrated with one opening/closing plate. Since the legs 10b are locked to the locking steps 12 protruding from the other opening/closing plate, there is no need to worry about planar warping or the degree of opening of the legs, which is the case with spiral spiral springs. Since there is no need to bend the locking legs at both ends at right angles and align them in parallel, the bottom shape of the return spring is very easy to assemble, and the locking groove on the shaft boss is also formed in the radial direction, allowing for deep engagement. It is easy to install and difficult to remove, and since it does not shift eccentrically with respect to the center of the shaft boss, there is no twisting force that acts as a fulcrum for the lever.
Therefore, the spring pressure is always applied evenly to the left and right opening/closing plates, so there is no fear of misalignment, and the operation is smooth, accurate, and natural, and the springs can be manufactured easily and inexpensively.

[Brief explanation of drawings]

Figure 1 is a front view of the main parts of the wire stripper of the present invention.
Figures 2 and 3 are cross-sectional views showing the operating state, Figure 4 is a cross-sectional view taken along line A-A in Figure 1, Figure 5 is a perspective view of the coil spring, and Figure '6 is a conventional wire stripper pivot section. FIG. 1...Opening/closing plate, 2...Handle, 3...Bending arm, 4...
... Pivot, 5... Fixed clamping piece, 6... Movable clamping piece,
7... Fixed stabbing blade, 8... Movable stabbing blade, 9... Continuous rod,
10... Opening/closing plate return spring, 11... Notch groove, 12...
...Locking stepped portion, 1a...shaft boss.

Claims (1)

[Scope of utility model registration request] A pair of left and right opening/closing plates and the bent edge of the handle are pivotally connected to each other by a pivot, and one opening/closing plate is provided with a fixed clamping piece and a movable clamping piece, and the other opening/closing plate is provided with a fixed stabbing blade, respectively, and the movable clamping piece is provided. and a movable stabbing blade are connected to the handle by a connecting rod, and an opening/closing plate return spring is provided on the pivot axis of the left and right opening/closing plates, and the return spring has the same winding diameter and the locking leg at one end is set in the tangential direction. The locking leg at the other end is formed by a coil spring with one or two turns bent in the radial direction, and the locking leg at one end is inserted into the notch groove formed in the radial direction of the outer circumference of the shaft boss. A wire stripper characterized in that a stop leg is locked to a locking step protruding from the other opening/closing plate.