JP2635409B2 - Terminal board mounting structure - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a mounting structure of a terminal plate used for a switch having a plurality of contacts, such as a slide switch and a rotary switch.

(Prior Art) Conventionally, this type of switch generally employs a structure in which a terminal plate is inserted and integrated during injection molding of a base. When the number of terminal boards is large, a plurality of terminal boards are connected to each other in advance and integrated to avoid the complexity of inserting the individual terminal boards and to improve the mounting accuracy. After molding,
The connecting portion of each terminal plate is punched out together with the base so as to be separated.

(Problems to be Solved by the Invention) However, in a switch requiring airtightness, in order to close a punched hole formed after punching a connecting portion of a terminal plate, sealing with a silicone resin or dividing the base into two parts in advance is performed. I had to punch out one and then overlap the other. For this reason, there has been a problem that a sealing step is added or the number of parts is increased to increase the number of assembling steps, resulting in poor productivity.

The present invention has been made in view of such a problem, and an object of the present invention is to provide a terminal plate mounting structure that maintains airtightness without closing a punched hole of a connecting portion of the terminal plate.

(Means for Solving the Problems) In order to achieve the above object, the present invention relates to a method in which a plurality of terminal plates are connected to each other to be integrally formed, and the terminal plates are fixed to a base by insert molding, and then the terminal plates are fixed. Is punched out together with the base with a stroke smaller than the thickness of the base to separate it into individual terminal boards, and the punched portion is left on the base.

(Operation) Since the connecting portion and the base are punched with a stroke smaller than the thickness of the base, the punched portion does not fall out of the punched hole and remains on the base.
Therefore, no penetrating punched hole is formed, and airtightness is maintained.

Next, an embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 2 shows an inhibitor switch of a vehicle to which the structure according to the present invention is applied. The inhibitor switch is for detecting a shift position of a shift lever, and generally includes a terminal base 1, a case 10, and a slider 20.

The side of one end of the terminal base 1 is shown in FIGS.
As shown in the figure, socket recesses 2a and 2b are formed, and a shaft hole 3 is formed at the other end. As shown in FIG. 7, terminal plates 5a to 5f, terminal plates 6a and 6b, and a terminal plate 7 are attached to the inner surface of the terminal base 1 facing the case 10.

Terminal base 1 of these terminal plates 5a to 5f, 6a, 6b, 7
Attachment is performed as follows.

First, as shown in FIG. 2, the terminal plates 5a to 5f are connected to the connecting portions 5x.
Similarly, the terminal plates 6a and 6b are integrally formed as the terminal blocks 6 connected to each other through the connecting portions 6x. Then, the terminal block 5, the terminal block 6 and the terminal plate 7 are inserted at the time of injection molding of the terminal base 1, respectively. At this time,
One end of each terminal board 5a to 5f, 6a, 6b, 7 (end near shaft hole 3)
Are arranged so as to be flush with the inner surface of the terminal base 1 and the terminal portion at the other end protrudes into a predetermined position of the socket recesses 2a, 2b.

Then, after the terminal base 1 and the terminal blocks 5, 6 and the terminal plate 7 are integrally formed by injection molding, as shown in FIG. After mounting, each connecting part 5x, 6x is punched out together with the terminal base 1 by a press 31, and each terminal board 5a-5
Separate f, 6a, 6b, 7. This punching is performed with a stroke smaller than the thickness of the terminal base 1. As a result, as shown in the right diagram in FIG. 1, the punched portion 8 remains without protruding from the outer surface of the terminal base 1 without falling off.

The case 10 houses the terminal base 1. The case 10 has a shaft hole 11 concentric with the shaft hole 3 of the terminal base 1, and a slider housing recess 12 on an inner surface facing the terminal base 1. A packing groove 14 for receiving a packing 13 is formed around the slider receiving recess 12 and the shaft hole 11.

The slider 20 includes the terminal base 1 and the case 10.
A cylindrical shaft portion 21 fitted into each of the shaft holes 3 and 11 and an arm portion 22 protruding from the shaft portion 21. Holes 23a, 23b provided on the surface of the arm portion 22 facing the terminal base 1.
Accommodate contact plates 24a and 24b, respectively. The contact plates 24a, 24b are urged by springs 25a, 25b in a direction protruding from the holes 23a, 23b.

The shaft portion 21 of the slider 20 is rotatably fitted into the case 10 and the shaft holes 3 and 11 of the terminal base 1, the arm portion 22 is housed in the slider housing recess 12, and the contact plate 24a is The contact portion of the terminal plate 5a of the terminal base 1 is pressed against the contact portions of the terminal plates 5b to 5f and the terminal plate 7, and the contact plate 24b is pressed against the contact portions of the terminal plate 6a and the terminal plate 6b. It has become.

The slider 20 rotates around the shaft portion 21 when a shift lever of a vehicle (not shown) is shifted, so that the shift position is detected when the contact corresponding to the shift position of the shift lever is turned on. Has become.

In this inhibitor switch, in order to maintain the contact reliability of the contacts, the operation space of the slider 20, that is, the air surrounded by the terminal base 1, the case 10, and the packing 13 is required to be airtight. As shown in FIG. 1, the punched portion 8 punched at the time of separation of 5f, 6a, 6b
Since it remains in the terminal base 1, a punched hole is not formed, and airtightness is maintained without molding the outer surface of the terminal base 1.

When a high degree of airtightness is required, the sheared portion of the punched hole 8 may be ultrasonically welded or a sealing agent may be injected into the sheared portion.

(Effects of the Invention) As is clear from the above description, according to the present invention, the punched portion of the connecting portion of the terminal plate remains in the base, and a punched through hole is not formed. There is no need to mold and close the base with silicone resin or split the base, simplifying the terminal board mounting process,
This has the effect of improving productivity.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a process of mounting a terminal plate, FIG. 2 is an exploded perspective view of an inhibitor switch of an automobile to which the present invention is applied, FIG. 3 is an outer surface view of a terminal base, and FIG. Front view of the socket part, FIG.
6 is a sectional view taken along the line II-II in FIG. 4, and FIG. 7 is an inner surface view of the terminal base. 1 ... terminal base, 5a-5f, 6a, 6b, 7 ... terminal board,
5x, 6x ... connecting part, 8 ... punching part.

Claims (1)

(57) [Claims] A plurality of terminal plates are connected to each other to be integrally formed, and the terminal plates are fixed to a base by insert molding, and then the connecting portions of the terminal plates are punched together with the base with a stroke smaller than the thickness of the base. A terminal plate mounting structure, wherein the terminal plate is separated into individual terminal plates and a punched portion is left on the base.