JPH0722080A - Terminal block equipped with screw retainer - Google Patents

Abstract

PURPOSE:To ensure and facilitate connection work by temporarily holding a screw on a terminal block, for connecting a wiring terminal portion. CONSTITUTION:In an area partitioned by a pair of partition walls 3, a retainer 4 is inserted in a terminal block 1. The retainer 4 is an elastic plate formed into a U-shape with leg end portions inserted and held in place in a slitlike recessed portion 1a engraved like a broken line along the opposite inside surfaces of the retainer 4 at the root of the partition walls 3. A machine screw 5 equipped with a spring washer 6 and a plain washer 7 is temporarily held in the retainer 4 and a crimped terminal 8 to be screwed is inserted in the end portion of the machine screw 5 and positioned. As the machine screw 5 temporarily held is driven into a terminal seat 2, the bottom 4a of the retainer 4 is curved and deformed into a U-shape, and finally the crimped terminal 8 is connected to the terminal seat 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal block in which a plurality of terminal block pedestals to which wiring terminals are screw-connected are arranged side by side with an insulating partition interposed in the center of adjacent ones. The present invention relates to a terminal block with a screw holder that ensures reliable, easy, and quick connection work of a wiring terminal by penetrating and temporarily holding a screw in a screw holder.

[0002]

2. Description of the Related Art A conventional example will be described with reference to the perspective view of FIG. In the figure, in a terminal base 1, a terminal base 2 which is a terminal fitting is embedded in a central portion of a region partitioned by a partition wall 3, while a crimp terminal 8 as a wiring terminal is provided with a small screw 5 Connected by. In addition, the small screw 5 has a spring washer 6 and a plain washer 7 in advance.
Has been inserted.

[0003]

During the screw connection work in the conventional example, the worker has the crimp terminal 8 crimped to the tip of the wiring, the spring washer 6, and the small screw 5 with the flat washer 7.
And it is necessary to focus on the three points with the unsigned driver. Therefore, first, the crimp terminal 8
A small screw 5 is temporarily screwed into the terminal portion pedestal 2, and then the crimp terminal 8 is held by hand and finally tightened with a screwdriver. Since there is no choice but to carry out the work in two stages,
It cannot be said that the work is easy and quick. If you try to do the work quickly, the certainty may be slightly reduced. Originally, since the screw connection work on the terminal block is large in quantity, a slight improvement in workability or reduction in man-hours of each individual will bring about a very large effect as a whole. Therefore, it is desirable to temporarily hold the small screw on the terminal block side by a simple means so that the hand and attention taken by this can be omitted.

An object of the present invention is to solve the above-mentioned problems of the prior art and to temporarily hold a screw for connecting the wiring terminal portion to the terminal portion pedestal to connect the wiring terminal portion. It is to provide a terminal block with a screw holder that is reliable, easy, and quick.

[0005]

According to another aspect of the present invention, there is provided a terminal block with a screw holder, wherein a plurality of terminal pedestals to which the wiring terminal portions are screw-connected have an insulating partition in the center of adjacent ones. Then, the terminal blocks arranged side by side were formed into a U-shape, and a hole was formed in the center of the bottom of the terminal block for temporarily holding the screw so that the head was positioned outside the U-shape. A screw holder made of an elastic plate material; carved along each inner surface facing each other at the roots of the adjacent partition walls,
Each of the U-shaped leg ends of the holder is provided with a slit-shaped recess that is inserted so that its bottom is located away from the terminal pedestal.

A terminal block with a screw holder according to claim 2 is
The terminal block according to claim 1, wherein the holder includes one split that crosses the edge of the bottom of the U-shape and connects to the hole. A terminal block with a screw holder according to a third aspect of the present invention is the terminal block according to the first or second aspect, wherein the retainer includes a U-shaped leg end portion with a retaining hook for the slit-shaped recess.

[0007]

In the terminal block with the screw holder according to any one of claims 1 to 3, each U-shaped leg end of the screw holder is a slit-shaped recess, and the U-shaped bottom is a terminal part pedestal. It is inserted so as to be located at a distance. The screw penetrates through this hole at the bottom and is temporarily held. After the wiring terminal is placed corresponding to the terminal pedestal, as the screw is screwed into the terminal pedestal in the temporary holding state, the bottom of the holder is in the opposite direction to the U-shape of the holder itself. It is bent and deformed into a U shape, and finally the wiring terminal portion is screw-connected to the terminal portion pedestal. Further, when the screw connection is released, the holder is biased by the elastic restoring force in the direction of removing the screw.

Particularly, in the terminal block with a screw holder according to a second aspect, the hole size for temporarily holding the screw is adjusted by deforming the edge portion so as to widen or narrow the split width dimension of the holder. be able to. Particularly, in the terminal block with the screw holder according to the third aspect of the present invention, the holder is prevented from coming off by the hook when the leg ends of the holder are inserted into the slit-shaped recesses.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the terminal block with a screw holder according to the present invention will be described below with reference to the drawings. FIG. 1 shows the main part of the embodiment, that is, the periphery of one terminal part pedestal, (a)
Is a side view before the screw connection, and (b) is a side view after the screw connection. In FIG. 1 (a), the holder 4 is inserted into the terminal base 1 in a region partitioned by the pair of partition walls 3. As will be described later in detail, the holder 4 is an elastic plate member formed in a U shape, and its leg ends are engraved as shown by broken lines along the inner surfaces facing each other at the root of the partition wall 3. It is inserted and fixed in the slit-shaped recess 1a. In addition, before being inserted into the holder 4, the spring washer 6 and the plain washer 7 are previously provided.
A small screw 5 with a through hole is penetrated and temporarily held, and a crimp terminal 8 to be screwed to the terminal pedestal 2 is inserted and positioned at the tip of the small screw 5.

The holder 4 will be described in more detail with reference to FIGS. Figure 2 is its side view,
FIG. 3 is a plan view thereof. As shown in FIG. 2, the holder 4
Is a U-shaped elastic plate-like member, and comprises a bottom portion 4a, left and right leg portions 4b, and a hook portion 4e integrally formed at the end portion thereof. As shown in FIG. 3, the bottom portion 4a has a circular portion in the center thereof, a hole 4c and a split 4d connected thereto are provided therein, and the portion connected to the circular portion in the central portion is each leg portion 4b. Form a strip with the same width as. Here, the hook 4e
Serves as a stopper when the leg ends of the holder 4 are inserted into the slits of the terminal base 1. Further, the split 4d is for adjusting a hole size for optimally temporarily holding the machine screw 5 by widening or narrowing the width dimension thereof.

Returning to the screw connection again, description will be made with reference to FIG. 1 (b). Machine screw 5 temporarily held by holder 4
Is screwed into the terminal portion pedestal 2 using a driver (not shown), the bottom portion 4a of the holder 4 is bent and deformed into a U shape while the temporary holding state is maintained, and finally the crimping is performed. The connection between the terminal 8 and the terminal base 2 is performed. Further, when the crimp terminal 8 is removed, the holder 4 is urged by the elastic restoring force in the direction in which the machine screw 5 is removed, so that there is an effect that the work can be performed easily.

The overall state in which the holder is inserted into the terminal block will be supplementarily described with reference to the side view of FIG. 5 and the plan view of FIG. In FIG. 5, the terminal base 1 has 3
Two holders 4 are inserted in each adjacent region of each partition wall, and are in a state before screw connection. In FIG. 6, the unmarked holes at each end of the terminal base 1 are for fixing themselves. From these figures, it can be seen that, when the connection is made using a large number of machine screws 5, a slight reduction in the number of individual work steps produces a very large effect as a whole.

[0013]

In the terminal block with screw holder according to any one of claims 1 to 3, each U-shaped leg end of the screw holder is a slit-shaped recess, and the U-shaped bottom is a terminal portion. It is inserted so that it is located away from the pedestal. The screw penetrates through this hole at the bottom and is temporarily held. After the wiring terminal is placed corresponding to the terminal pedestal, as the screw is screwed into the terminal pedestal in the temporary holding state, the bottom of the holder is in the opposite direction to the U-shape of the holder itself. It is bent and deformed into a U shape, and finally the wiring terminal portion is screw-connected to the terminal portion pedestal. Further, when the screw connection is released, the holder is biased by the elastic restoring force in the direction of removing the screw. Therefore, at the time of screw connection work of the wiring terminal portion to the terminal block, the holding of the screw is left to the holder inserted in the terminal block, so that the operator's hands and attention are directed only to the wiring and the driver. Often,
Work is reliable, easy, quick, and highly safe.

Particularly, in the terminal block with a screw holder according to a second aspect, the hole size for temporarily holding the screw is adjusted by deforming the edge portion so as to widen or narrow the split width dimension of the holder. can do. Therefore, the temporary holding state of the screw can be optimized, which in turn supports the reliability, easiness, speediness, and safety of the work. Particularly, in the terminal block with the screw holder according to the third aspect of the present invention, the holder is prevented from coming off by the hook when the leg ends of the holder are inserted into the slit-shaped recesses. Therefore, the holder can be reliably and easily inserted into the terminal block.

[Brief description of drawings]

FIG. 1 is a side view of a main part of an embodiment according to the present invention before screw connection, and (b) is a side view after screw connection thereof.

FIG. 2 is a side view of main parts of the embodiment.

FIG. 3 is a plan view of the same.

FIG. 4 is a side view of the embodiment.

FIG. 5 is a plan view of the embodiment.

FIG. 6 is a perspective view showing a screw connection work in a conventional example.

[Explanation of symbols]

 1 Terminal Base 1a Recess 2 Terminal Base 3 Partition 4 Holder 4a Bottom 4b Leg 4c Hole 4d Split 4e Hook 5 Small Screw 6 Spring Washer 7 Plain Washer 8 Crimp Terminal

Claims (3)

[Claims] 1. A terminal block in which a plurality of terminal block pedestals to which a wiring terminal block is screw-connected are juxtaposed in a U-shape in a terminal block in which an insulating partition is interposed in the center of adjacent ones.
A screw holder made of an elastic plate material having a hole for temporarily holding a screw at a central portion of its bottom with the head oriented outside the U-shape; A U-shaped leg end of the holder is inserted along each of the inner surfaces facing each other, and the slit-shaped recess is inserted so as to position the bottom of the holder away from the terminal base. A terminal block with a screw holder. 2. The terminal block with a screw holder according to claim 1, wherein the holder is provided with one split that crosses the edge of the bottom of the U-shape and connects to the hole. 3. The terminal with screw holder according to claim 1 or 2, wherein the holder is provided with hooks for preventing the slit-like recesses from coming off at the U-shaped leg ends. Stand.