JPH056794B2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" The present invention relates to a contactor.

"Prior Art and Problems to be Solved by the Invention" As shown in FIG. It is used by screwing together with a screw 104 and inserting the lead wire of an electric element between the contact pieces 101 and 102.

Such a contact requires a screw 104 to attach, and also requires screwing in to fix the screw 104, which takes time to attach. Furthermore, if the contact is not manufactured with high processing accuracy, when the connecting piece 103 is tightened with the screw 104, the contact pieces 101 and 102 tend to separate, and the lead wire of the electric element may not be sufficiently clamped.

``Means for Solving the Problems'' Therefore, the present invention has been devised so that the contact pieces can sufficiently abut each other and grip the lead wire of an electric element without using other parts such as screws. A contact piece 53 having an arcuate cross section 51, 54 and having outward engaging pieces 52, 55 protruding from the base end.
The contact pieces 53 and 56 are plate-shaped contacts in which the arcuate portions of the contact pieces 56 face each other and the proximal ends are connected by a connecting piece 57, and the contacts 53 and 56 are inserted into the square insertion holes 58 of the conductor 24. The proximal ends of the contact pieces 53 and 56 and the connecting piece 57 are deformed so that the contact pieces 53 and 56 approach each other, and the engagement pieces 52 and 55 elastically abut against the upper edge of the insertion hole 58. This is a contact with a set connection angle.

``Operation'' Insert the contact into the insertion hole of the conductor by gripping and applying pressure so that the contact pieces approach each other, and when released, they snap into contact and are installed.

"Example" First, the present invention will be described in detail with reference to FIGS. 1 to 7 regarding a terminal block incorporating a surge absorbing element as an example in which this contactor is used.

As shown in FIG. 1, the terminal block 1 supports a plate-shaped terminal 3 on a support piece 2 on one side of the terminal block 1.
Two guide holes 4 are bored in this plate-shaped terminal 3, and a washer 7 that connects a horizontal piece 5 and a vertical piece 6 is provided so that the vertical piece 6 can be raised and lowered into the guide hole 4, and is supported by a coil spring 8. It is biased upward. A terminal screw 9 is screwed into the horizontal piece 5 of the washer 7, and the plate-shaped terminal 3
A crimp terminal (not shown) at the end of the wiring is inserted into a screw hole 10 formed in the screw hole 10, and then the screw-in crimp terminal is held between the horizontal piece 5 of the washer 7 and the plate terminal 3.

In order to arrange and stack terminal blocks 1 made in this way, a guide slope 1 is provided on one side of the terminal block 1 and receives a positioning protrusion (not shown) protruding from the other side.
form 1. An end plate 12 as shown in FIG. 4 is stacked on the end of the stacked terminal blocks 1, and a recess 1 is formed on one side of the end plate 12.
3 receives the positioning protrusion of the terminal block 1 and connects.

At the center of the plate terminal 3, a fifth contact 2 is provided.
1 and an insulating cylinder 2 near this contact 21.
Fit 2.

In the terminal block 1, a plate-shaped conductor 24 connected to the ground or common shown in FIG. 4 is passed through and fitted into the guide groove 23 at the lower part of the insulating cylinder 22.

By the way, as shown in FIGS. 1 and 2, the surge absorbing element 31 is constructed by inserting its lead wire 32a into one of the contacts 21 and simultaneously inserting the other lead wire 32b through the insulating cylinder 22. Insert it into the contactor 21 and fix it.

In this way, the surge absorbing element 31 is connected to the plate terminal 3.
Since it is detachably attached to the plate-shaped conductor 24, it is easy to attach and detach, and there is no need for trouble to replace it when it is damaged by lightning surge or the like. Also,
Contactor 21 and plate conductor 24 attached to plate terminal 3
The same shape as the contact 21 to be attached to the plate conductor 24 is used, as shown in FIG.
Since a large number of contacts 21 are attached at positions corresponding to the spacing between the terminal blocks 1, it is possible to mass-produce the terminal block incorporating the surge absorbing element.

Next, the contactor 21 will be explained in detail.

As shown in FIG. 5, the contactor 21 is a plate-shaped body, and has one contact piece 53 having an arcuate cross section 51 at the tip and an outwardly facing engagement piece 52 protruding from the base end; The other contact piece 56 is formed to have an arcuate cross section 54 and has an outwardly directed engaging piece 55 protruding from its base end, with the arcuate portion facing each other, and the base end portions are connected by a connecting piece 57.
The contact 2 is inserted into the insertion hole 58 drilled in the plate-shaped conductor 24.
1, the contact piece 53 and the contact piece 56 are deformed so that they approach each other, and the engaging pieces 52 and 55 are inserted into the insertion hole 58.
The connecting angle between the proximal end portions of the contact pieces 53 and 56 and the connecting piece 57 is set so that the contact pieces 53 and 56 are elastically engaged with the upper edges of the contact pieces 53 and the connecting pieces 57 are elastically brought into contact with each other. This continuous angle is set to an obtuse angle within a range that provides elasticity when bent at right angles.

A plurality of insertion holes 58 into which the contacts 21 are elastically inserted are bored in the plate-shaped conductor 24.

The insertion hole 58 is a square hole, and the contact 2 made of thin sheet metal is inserted into the insertion hole 58.
Attach 1. As shown in FIG. 5, the contact 21 is bent to a right angle between the connecting piece 57 and the contact pieces 53 and 56, and then inserted into the insertion hole 58 as shown in FIG. As shown in FIG.
The connecting portion between the connecting piece 56 and the connecting piece 57 is bent from an obtuse angle to a right angle, and the contact pieces 53 and 56 of the contactor 21 are elastically pressed into the insertion hole 58 (see FIG. 9) and are crimped and engaged. Pieces 52 and 55 engage the upper edge of insertion hole 58. At the same time, the contact portions of the contact pieces 53 and 56 come into elastic contact with each other.

To attach the surge absorbing element 31 to the contactor 21, as shown in FIG.
are in elastic contact with each other to form a contact plane 61. When the lead wires 32a, 32b are inserted into the contact plane 61, the lead wires 32a, 32b are elastically clamped and held by the contact pieces 53, 56, as shown in FIG.

"Effects of the Invention" As described above, the present invention has an arcuate cross section at the tip.
1, 54 and outwardly facing engagement pieces 52, 5 at the proximal end.
It is a plate-shaped contact in which a contact piece 53 and a contact piece 56 with protruding parts 5 and 56 are connected with a connecting piece 57 with their arcuate parts facing each other, and a rectangular insertion hole 58 for the conductor 24. When the contacts 53 and 56 are inserted into the
The engaging piece 5 is deformed so that the contact piece 56 approaches the engaging piece 5.
Since the contact pieces 53 and 56 are connected at an angle such that the proximal ends of the contact pieces 53 and 56 and the connecting piece 57 are connected so that the contact pieces 2 and 55 come into elastic contact with the upper edge of the insertion hole 58, there is no need to use parts such as screws. Moreover, the contact pieces sufficiently abut each other to sufficiently grip the lead wire of the electric element. The contact of the present invention not only firmly grips the lead wire by forcibly deforming the contact through the square insertion hole, but also allows the lead wire to be inserted from either the top or bottom direction. By providing multiple insertion holes, multiple circuits can be grounded at once.

[Brief explanation of the drawing]

The drawings show a specific embodiment of the present invention.
The figure is a perspective view of the terminal block, Figure 2 is a front view of the terminal block,
Figure 3 is a right side view of Figure 2, Figure 4 is a perspective view showing the state in which the plate conductor is attached to the end plate, and Figure 5 is a perspective view showing the state before the contact is attached to the plate conductor. , Fig. 6 is a perspective view showing a state in which a contact is attached to the insertion hole of a plate-shaped conductor, Fig. 7 is a perspective view showing a state in which a plate-shaped conductor with a contact fixed to a terminal block is attached, and Fig. 8 is a cross-sectional view of the proximal end of the contact, No. 9
The figure is a plan view of the insertion hole of the plate-shaped conductor, Figure 10 is a front view showing the state in which the contact is attached to the plate-shaped conductor, and Figure 11 is the state in which the lead wire of the surge absorption element is inserted into the contact. FIG. 12 is a front view showing a conventional contactor, and FIG. 12 is a perspective view of a conventional contactor. 52, 55... Engaging piece, 53, 56... Contact piece, 57... Connection piece, 21... Contact, 58...
Insertion hole.

Claims (1)

[Claims] 1. A contact piece 53 whose distal ends have arcuate cross sections 51 and 54 and whose proximal ends have outward engaging pieces 52 and 55 protruding from each other.
It is a plate-shaped contact in which a contact piece 56 and a contact piece 56 are connected with a connecting piece 57 with their arcuate parts facing each other, and the contacts 53 and 56 are inserted into a rectangular insertion hole 58 of the conductor 24.
When the contact piece 53 and the contact piece 56 are inserted, the contact piece 53 and the contact piece 56 are deformed so that the engaging pieces 52 and 55 are elastically engaged with the upper edge of the insertion hole 58, and the arcuate portions are elastically abutted against each other. A contactor in which the connecting angle between the base end portions of contact pieces 53 and 56 and connecting piece 57 is set as follows.