JPH0231962Y2 - - Google Patents

Description

[Detailed Description of the Invention] The switch of the present invention will be explained according to the following items.

A. Field of industrial application B. Overview of the invention C. Prior art D. Problem that the invention attempts to solve E. Means for solving the problem F. Example a. Case [Figures 1 to 4] b. Printed circuit board [Figure 4] Figures 1 to 4] c Electronic components [Figures 1 to 4] d Assembling the printed circuit board [Figures 1 to 3]
Figure] e Switching element [Figures 1 and 3] G Effects of the invention (A Field of industrial application) The present invention relates to a new switch. For more information,
To provide a new switch that is equipped with two printed circuit boards that are connected to each other, and that allows easy assembly of these printed circuit boards, and that allows easy and reliable electrical connection between the printed circuit boards. This is what I am trying to do.

(B. Overview of the invention) The switch of the present invention has two printed circuit boards that are coupled to each other aligned with each other, and engages the engagement elements provided on each with the engagement element provided on the case. By doing so, it is possible to mechanically connect the two printed circuit boards and attach them to the case. Furthermore, one terminal of the electronic component is connected to one printed circuit board, and another terminal is connected to the other printed circuit board. An electrical connection is made between the two printed circuit boards by connecting the two printed circuit boards to the substrate, thereby facilitating mechanical coupling and electrical connection between the two printed circuit boards, and This is to ensure that this can be done.

(C Prior Art) In a switch, a printed circuit board is provided with connection terminals for arranging the switching elements in the case or for connecting these switching elements to a predetermined circuit, and also a circuit board between the switch and an external circuit. In some cases, two printed circuit boards are arranged, one being a printed circuit board serving as a lead-out section for connection with the other.

These two printed circuit boards need to be arranged at angles to each other due to their respective roles.

In this way, when two printed circuit boards are connected at an angle, it is necessary to perform two types of connection: mechanical connection and electrical connection.

First, regarding mechanical coupling, it is conceivable to provide coupling means for both, to use separate coupling means, or to employ a combination of these means.

Further, the electrical connection may be made by forming connection terminals at the joint ends of the two, and directly soldering these terminals or connecting them with a cord.

(Problem to be solved by the invention D) However, as mentioned above, it is possible to connect the two printed circuit boards at a certain angle by providing an engaging means, using a separate coupling means, or by combining these means. Since the bonding points are limited, it is difficult to obtain a reliable bond with this alone, and if you use other reinforcing means to strengthen the bond, the structure will deteriorate. There is a problem in that not only is this complicated, which hinders the miniaturization of the switch, but it is also disadvantageous in terms of cost.

In addition, the method of directly connecting terminals formed at the joint ends of two printed circuit boards by soldering is extremely unstable and may cause problems such as poor connection, so this should be avoided. Therefore, connecting the two using a cord requires extra effort and extra members, which inevitably increases costs.

(E. Means for Solving Problems) In order to solve the above-mentioned problems, the switch of the present invention is provided with two printed circuit boards positioned in a case relative to each other by positioning means formed on them. The two printed circuit boards are connected to each other at an angle and attached to the case at the same time, and one of the terminals of the electronic component is connected to one of the printed circuit boards. Connect another terminal to the other one on the printed circuit board and
This is an electrical connection between two printed circuit boards.

Therefore, according to the present invention, only by positioning the two printed circuit boards relative to each other, the two printed circuit boards are engaged with the engaging elements provided in the case. Since the printed circuit boards are mechanically connected to each other at the same time as they are installed in the case, the force application points for the connection are multiple points at intervals, which ensures that the angle between the two printed circuit boards is correct. is maintained. Moreover, since mounting each printed circuit board to the case is a necessary operation in any case, the number of operations does not particularly increase.

In addition, since electronic components originally require their terminals to be connected to a printed circuit board, this connection also serves as an electrical connection between the two printed circuit boards. This has the advantage that the electrical connection between them can be reliably made and no special effort is required for this purpose.

(F. Embodiment) The details of the switch of the present invention will be explained below according to the illustrated embodiment 1.

(a Case) [Figs. 1 to 4] Reference numeral 2 denotes a case, which has a substantially rectangular box shape.

Reference numeral 3 denotes an insertion hole formed at a position near one end in the longitudinal direction of the closed side of the front part of the case 2, and from a position along the outer edge of the insertion hole 3 toward the outside. An annular protrusion 4 is formed thereon.

Further, a stepped portion 6 facing rearward is formed at a position on the inner surface of the peripheral wall portion 5 near the rear opening end, and a step portion 6 facing backward is formed on the inner surface of the peripheral wall portion 5 at a position near the other end in the longitudinal direction. an engagement groove 7 extending to
7 are formed to face each other.

Engagement pieces 8 and 9 are provided to protrude rearward from the rear surface of the front closure part, and are arranged at a position near the other end in the longitudinal direction of the case 2, with a slight distance from each other in the longitudinal direction. It is arranged like this. One of these engaging pieces 8 and 9 is longer than the other, and the engaging piece 9 is arranged at a position between the engaging grooves 7 and 7. . 8a and 9a are engagement claws formed at the tips of the engagement pieces 8 and 9.

10, 10 is a boss portion formed along a corner at one end in the longitudinal direction of the inner wall portion of the peripheral wall portion 5, and the rear end thereof is located at the same position as the step portion 6. . These boss parts 10, 10 have screw holes 11, 1 opened on the rear end surface.
1 is formed.

The case 2 as described above is formed by integral molding of synthetic resin. Furthermore, 12,
Reference numeral 13 indicates a hole necessary for molding in forming the engaging claws 8a, 9a.

(b Printed circuit board) [Figures 1 to 4] 14 is one printed circuit board.

This printed circuit board 14 has a rectangular shape, and screw insertion holes 15 are formed at both corners of one end in the longitudinal direction.

Reference numeral 16 denotes a positioning projection protruding from the center of the other end of the printed circuit board 14.

Reference numerals 17, 17, . . . are attachment holes formed through the printed circuit board 14 in the board thickness direction, and a pattern conductor (not shown) is formed on the front surface of the printed circuit board 14.

Reference numeral 18 denotes an engagement hole formed approximately in the center of the printed circuit board 14 near the other end.

19 is the other printed circuit board.

The printed circuit board 19 has a portion 19 extending in the front-rear direction.
A and a portion 19b extending in the left-right direction are integrally formed to form a substantially L-shape.

An engagement hole 20 is formed in the center of the portion 19a at a position slightly rearward from the front end, and a positioning hole 21 is formed slightly rearward of the engagement hole 20.

22, 22... are mounting holes formed through the printed circuit board 19 in the board thickness direction, and
The printed circuit board 19 has pattern conductors 23, 23,
...is formed.

(c Electronic components) [Figures 1 to 4] 24, 24, . . . are electronic components. One of the terminals 24a, 24 of these electronic components 24, 24, ...
a, ... are the mounting holes 17 of the printed circuit board 14,
17, ... is inserted from the rear, and the printed circuit board 1
Solder the pattern conductors 25, 25, . . . formed around the mounting holes 17, 17, . . . on the front side of 4.
... (only one is shown in the drawing), and other terminals 24b, 24 of the electronic components 24, 24, ...
b, ... are mounting holes 22, 2 of the printed circuit board 19
2,... and is inserted into the mounting holes 22, 22,
Patterned conductors 23, 2 formed around ...
3, . . are soldered to the land portions 23a, 23a, . . .

(d Assembling the printed circuit board) [Figures 1 to 3] The positioning protrusion 16 of the printed circuit board 14 is fitted into the positioning hole 21 formed in the printed circuit board 19, thereby positioning both of them with respect to each other. The terminals 24a, 24 of the electronic components 24, 24, . . . are held at a 90 degree angle.
a, . . . and 24b, 24b, .

After that, the front end of the portion 19a of the printed circuit board 19 is engaged with the engagement grooves 7, 7 formed in the case 2 from the rear, and the printed circuit board 14 is connected to the stepped portion 6 formed in the case 2. Insert it into case 2 from the rear so that it comes into contact with.

Then, eventually the engagement hole 8a of the engagement piece 8 formed in the case 2 engages with the engagement hole 18 formed in the printed circuit board 14, and the engagement claw 9 of the engagement piece 9 engages with the engagement hole 18 formed in the printed circuit board 14.
a engages with an engagement hole 20 formed in the printed circuit board 19.

In this state, the screw insertion holes 15, 15 formed in the printed circuit board 14 are aligned with the screw holes 11, 11 of the boss parts 10, 10 formed in the case 2. Therefore, the mounting screws 27, 27 are inserted into the screw insertion holes 15, 15 of the printed circuit board 14, and
It is screwed into screw holes 11, 11 formed in the case 2.

In this way, the printed circuit boards 14 and 19 are attached to the case 2 with their angular and positional relationships determined, and the printed circuit boards 14 and 19 are
and 19 are electrically connected via electronic components 24, 24, .

(e Switching Element) [FIGS. 1 and 3] Reference numeral 28 denotes a shaft, and a flange 29 is integrally formed at a position slightly forward from the rear end. This shaft 28 is inserted into the insertion hole 3 formed in the case 2 from the inside of the case 2 through the flange 29.
is inserted until it comes into contact with the inner surface of the case 2, thereby being rotatably supported by the case 2.

30 is a rotating plate with a fitting hole 3 in its center.
1 is formed, and the rear end portion of the shaft 28 is fitted into the fitting hole 31, and in this state, the rotating plate 3
0 is fixed to the shaft 28. One or more movable contacts (not shown) are formed on the rear surface of the rotating plate 30.

Reference numeral 32 denotes a terminal holding plate, which is arranged and fixed within the case 2 between the printed circuit board 14 and the rotary plate 30. The terminal holding plate 32 also has a plurality of terminal holding holes 33 extending through it in the thickness direction.
33, . . . (only one is shown in the drawing) are formed.

34, 34, . . . (only one is shown in the drawing) are conductive spheres, and these serve as terminals. These spheres 34, 34, . . . are slidably arranged on the rotating plate 30 side within the terminal holding holes 33, 33, .

35, 35, ... (only one is shown in the drawing) are conductive coil springs,
Terminal holding holes 33, 33, . . . of the terminal holding plate 32
The spheres 34, 34, . . . are compressedly inserted between the terminal portions of the patterned conductors formed on the front surface of the printed circuit board 14 within the spherical bodies 34, 34, . ...is the printed circuit board 14
is connected to a predetermined pattern conductor.

By rotating the shaft 28, appropriate ones of the spheres 34, 34, . . . are connected to or disconnected from appropriate ones of the movable contacts formed on the rotary plate 30. A switching action will be performed.

(G. Effect of the invention) As is clear from the above description, the switch of the present invention includes a case that houses the switching element, two printed circuit boards that are attached to the case and coupled to each other, and an electronic component attached to a printed circuit board; the two printed circuit boards each include positioning means for each other and an engaging element for the case; Thus, in the positioned state, each engaging element is engaged with an engaging element provided on the case, one of the terminals of the electronic component is connected to one of the printed circuit boards, and another of the terminals is connected to one of the terminals of the printed circuit board. is connected to the other printed circuit board, thereby electrically connecting the two printed circuit boards.

Therefore, according to the present invention, instead of directly mechanically joining the two printed circuit boards, it is possible to simply position the two printed circuit boards and then attach the printed circuit boards to the case. Therefore, since the printed circuit boards are mechanically connected to each other, it is possible to ensure the mechanical connection between the two printed circuit boards at an angle. It has the advantage of not requiring any extra members.

In addition, since the electrical connection between two printed circuit boards is made via electronic components, the electrical connection is reliable, and the electronic components do not need to connect their terminals to the printed circuit board in any case. Therefore, it has the advantage that no special member or special effort is required for electrical connection between printed circuit boards.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the switch of the present invention; FIG. 1 is a longitudinal sectional view, FIG. 2 is a rear view, FIG. 3 is a bottom view, and FIG. 4 is an exploded perspective view of the main parts. Explanation of symbols, 1...Switch, 2...Case,
8... Engagement element of case, 9... Engagement element of case, 14... Printed circuit board, 16... Positioning means, 18... Engagement element of printed circuit board, 19...
Printed circuit board, 20... Engaging element of printed circuit board, 21... Positioning means, 30, 32, 33,
34, 35...Switching element.

Claims (1)

[Claims for Utility Model Registration] The device includes a case that houses a switching element, two printed circuit boards that are attached to the case and coupled to each other, and electronic components that are attached to the printed circuit board. , the two printed circuit boards are provided with positioning means between them and engagement elements with respect to the case, and these printed circuit boards are positioned by the mutual positioning means, and each engagement element is connected to the case. engaged with an engaging element provided on the case, one of the terminals of the electronic component is connected to one of the printed circuit boards, and another of the terminals is connected to the other of the printed circuit boards, thereby A switch characterized by an electrical connection between two printed circuit boards.