JPS5925072Y2 - Push type changeover switch - Google Patents

Description

[Detailed description of the invention] This invention relates to a bushing type changeover switch.The purpose of this invention is to use a bushing type changeover switch that is compact, has reliable switching operation and locking, eliminates the need for a pin holder, and is easy to assemble and disassemble. The purpose is to provide a switch.

This invention will be described below with reference to embodiments shown in the drawings.

Figures 1, 2, 3, and 4 each show an embodiment of this invention. Figure 1 is a top view with the lower half sectioned, and Figure 2 is the right half sectioned. FIG. 3 is a right side view with only the case cut away, and FIG. 4 is a front view with the case and slider cut away.

As is clear from these figures, the bush switch of this invention has movable contacts such as the first and second cases 10 and 20, the lock pin 30, the first and second terminal plates 50 and 60, and the clip 70. Members, coil spring 80, slider 9
It is composed of 0.

The first case 10 has a circular protrusion 11 and a lock pin pivot 12 on the bottom surface of a bottomed square cylinder made of an insulating material such as polyester, for supporting a coil spring 80 at a central position. , a diametrical slot 11a is formed in the center of the circular protrusion 11.

In addition, terminal leg insertion holes 13 are formed at both opposite ends of the bottom surface of the bottomed square tube (junctions between the bottom and side surfaces), and terminal leg insertion holes 13 are formed at both ends of the bottom surface of the bottomed square tube, which are different from the terminal leg insertion holes 13. An engagement piece insertion hole 14 is formed.

Furthermore, a step 15 is formed on the inner surface of the bottomed square tube at a predetermined depth from the opening, and a mark protrusion 16 is formed on a part of the outer periphery of the side surface of the bottomed square tube.

In addition, a recess 17 is provided on a part of the bottom surface of the outer periphery of the bottomed square cylinder so that a square label can be attached thereto.

The second case 20 has a stepped portion that can be inserted into the first case 10 and abuts the stepped portion 15 of the first case 10, for example, at a part of the open end of a bottomed rectangular cylinder made of an insulating material such as polycarbonate. 21, and retaining pieces 22 are integrally formed at opposing positions on the open end side of the bottomed square cylinder,
In addition, a rectangular slider insertion hole 23 is formed in the bottom surface in the shape e, through which the slider 90 can move up and down.

The lock pin 30 is approximately U-shaped, and the center of one end side is rotatably supported by the lock pin pivot portion 12 of the first case 10, and the end portion is connected to a slot 11 formed in the circular protrusion 11. a, and the other end engages with a heart cam 91 of a slider 90, which will be described later.

Since both the first and second terminal boards 50, 60 have the same configuration, only the first terminal board 50 will be described here.

That is, as shown in FIG. 3, on the insulating plate 51, there are at least three independent terminal conductors (the case of three is shown here), each of which is approximately L-shaped and has a terminal leg 52 and a contact portion 53 integrated. 54 is attached, and the terminal leg 52 of this terminal conductor 54 can be inserted into the terminal leg insertion hole 13 of the first case 10.

The clip 70 is made by bending a conductive plate having spring characteristics into a substantially U-shape, with arcuate surfaces 71 protruding inwardly formed at both bent ends, and a notch 72 at the center of both bent ends. The bent end portions are configured to sandwich the contact portions 53 of the first and second terminal plates 50, 60 and to be able to simultaneously contact adjacent contact portions 53 among the contact portions 53.

The slider 90 is an insulating prismatic column made of polyacetal, for example, which can be inserted into the slider insertion hole 23 of the second case 20, and has a stepped outer periphery, and is used for vertically inserting a coil spring between the bottom surface and one side. A cutout 92 is formed.

Further, a coil spring 80 is provided between this recess 92 from the bottom side of the prism and the circular protrusion 11 of the first case 10, so that the slider 90 is constantly pressed upward and one end of the lock pin 30 is provided with a coil spring 80. 4, and the other end of the lock pin 30 is always biased counterclockwise in FIG.

This is the slot 1 between the lock pin pivot 12 and the circular protrusion 11.
1a, this is because the bottom surface near this area slopes downward from the right side to the left side in Fig. 4.

Clipping pieces 93 are formed at the corner portions of both opposing sides to sandwich the upper and lower ends of the clip 70 and to move the clips up and down as the slider 90 moves.

Furthermore, a recess 94 for forming a heart cam 91 is formed on the surface of the square column that sandwiches the clamping piece 93, that is, the surface opposite to the surface having the recess 92 for inserting the coil spring.

As shown in Fig. 5, a V-shaped locking protrusion 95 is formed in this locking hole 94, and the 15g portion is a raised portion that is lower than the locking protrusion 95, and the portions a and l). is the lowest, parts d and e are slightly higher than a and l),
Part C is higher than parts d and e, and parts h and i are sloped surfaces.

In this case, the inclined surface slopes upward from the b side to the e side, and the slope i slopes downward from the e side toward the e side.

The lock pin 30 of the heart cam 91 having such a shape moves smoothly to the position indicated by the two-dot chain line in FIG. 5 as the slider 90 moves up and down.

The operation of the bush switch of this invention constructed in this way will be explained below.

First, when the slider 90 is in its longest protruding length from the case 10.20, as shown in FIG.
The arc surface 71 of the clip 70, which is partially inserted between the clamping pieces 93 and 93, is in contact with the uppermost and second contact portions 53 of the terminal board 50 and 60, respectively.

As a result, the terminal legs 52 on the left side and the center in FIG. 3 are electrically connected.

In this state, the coil spring 80 is in its most extended state as shown in FIG. 4, but the slider 90 is pressed upward by the coil spring 80, and the upper end side of the lock pin 30 is
b adjacent to the raised portion f of the heart cam 91 as shown in FIG.
(bottom part in Figure 5).

Therefore, this state is maintained continuously unless the slider 90 is pressed downward from above.

When the slider 90 is pressed downward from the state shown in FIGS. 3, 4, and 5, the coil 80
At the same time, the lock pin 30, which is always biased counterclockwise with respect to the lock pin pivot portion 12 shown in FIG.
FIG. 7 shows the relationship between the contact portion 53 of the terminal plate 50, 60 and the clip 70 in this intermediate state where the terminal plate 50, 60 is deflected in the direction of the dotted chain line.

In this state shown in FIG. 7, the lock pin 30 is attached to the heart cam 9.
It moves from the slope of 1 to the d part via the C part.

Finally, the lock pin 30 is locked to the locking protrusion 95 of the heart cam 91 shown in FIG.
．． The relationship with 60 is as shown in FIG.

That is, the arc surface 71 of the clip 70 is connected to the terminal plate 50.6.
0, the terminal legs 5 at the center and right side in FIG.
2 are electrically connected.

In this state shown in FIG. 6, the coil spring 80 is most compressed and the spring force is stored at its maximum.

In this state, when the slider 90 is pressed again, the lock pin 30 moves diagonally upward and the heart cam 91
The slider 90 is removed from the locking protrusion 95 and guided to the part e of the heart cam 91, and the slider 90 is pushed upward by the spring force of the coil spring 80, which has been stored to the maximum as described above, and is again shown in FIGS. 3 and 4. It will be in the state shown in the figure.

As described above, in this invention, the slider 90 has a heart cam 91 and a clip 70 held at both corners of one side of the slider 90, and a holding piece 9 is provided to drive the slider 90 as the slider 90 moves.
3. Further, the slider 90 is provided with a recess 92 for inserting the coil spring 80, and the case 10.2 is adjacent to the heart cam 91 of the slider 90 and faces each other.
The terminal plates 50 and 60 are arranged on the inner surface of the terminal plate 50 and the clip 7 is attached to the independent contact portion 53 of the terminal plate 50 and 60.
Since 0 can be slidably connected, a multi-point multi-circuit changeover switch can be obtained with a simple package.

Further, a locking protrusion 9 having a shape as described above is formed on the side surface of the slider 90 which is constantly pressed upward by the coil spring 80.
The other end of the lock pin 30 is formed with a heart cam 91 including 5, and one end of which is rotatably supported by the case 10 is pressed by the coil spring 80 so as to be always biased toward the heart cam 91. , the switching operation is reliable and the locking in a predetermined state is ensured.

Furthermore, since the coil spring 80 that constantly presses the slider 90 serves as a member that always biases the lock pin 30 counterclockwise, this member, such as a pin holder, can be omitted.

Further, the case 10.20 is divided into two parts, and step parts 15 and 21 are formed on the open end side so that the two can be integrally connected, and an engagement piece insertion hole 14 is formed on one side, and a retaining piece 22 is formed on the other side. is formed, and the terminal plates 50 and 60, the lock pin 30, and the pin retainer 40 are removably provided on the case 10 side, making assembly and disassembly easy.

Further, the end of the lock pin 30 on the side of the lock pin pivot portion 12 is connected to a circular protrusion 11 for stably supporting the coil spring 80.
Since the lock pin 30 is fitted into the shaped slot 11a, the lock pin 30 does not wobble and operates smoothly even when the slider 90 moves up and down.

Note that this invention is not limited to the embodiments described above, and can be implemented with the following modifications, for example.

By constructing the entire case 10.20 with a transparent insulating material, the internal operating state can be seen and failures can be easily discovered.

Further, the number of terminal conductors 54 on the terminal board 50, 60 can be increased to three or more, and the number of switching circuits can be increased accordingly.

Further, the engagement piece insertion hole 14 and the engagement piece 22 formed in the case 10.20 are shaped, and the engagement piece 22 is formed in the case 10, and the engagement piece insertion hole 14 is formed in the case 20. It's okay.

[Brief explanation of drawings]

1, 2, 3 and 4 are a top view, a left side view, a right side view and 5 is a front view of the heart cam formed on the slider of the same embodiment, and FIGS. 6 and 7 are views showing a part of the right side view for explaining the operation of the same embodiment. be. DESCRIPTION OF SYMBOLS 10... First case, 11... Circular protrusion, 11
a...Slot, 12...Lock pin pivot, 13.
...Terminal leg insertion hole, 14...Engagement piece insertion hole, 15...
・Stepped part, 16... Seal, 17... Hollow, 20...
Second case, 21... Step portion, 22... Engagement piece, 2
3...Slider insertion hole, 30...Lock pin, 41
...Bending piece, 50.60...Terminal board, 51...Insulating plate, 52...Terminal leg, 53...Contact part, 54...
・Terminal conductor, 70... Clip, 71... Arc surface,
72...notch, small...coil spring, □...slider, 91...heart cam, 92...recess for coil insertion, 93...clipping piece, 94...recess (heart cam) (For configuration), 95...Lock protrusion.

Claims (1)

[Scope of utility model registration request] A first case that has a lock pin pivot on the bottom of the bottomed square cylinder and has terminal board insertion holes on the bottom of the opposing sides, and can be fitted and removed into the open end of the first case. In the second case, a slider insertion hole is formed on the bottom of the bottomed rectangular cylinder.
and the first case, at least three independent terminal conductors are provided on the insulating plate, and a contact portion is provided on one side of the first and second cases. a substantially U-shaped lock pin whose one end is rotatably supported by the lock pin pivot portion of the first case, and one end of which is rotatably supported by the lock pin pivot portion of the first case; A portion protrudes and is slidably provided in the first and second cases, and includes a clamping piece, a spring insertion portion, and a locking protrusion on the opposite side of the protruding end to which the other end of the lock pin is locked. and a slider each having a heart cam formed so that the lock pin is rotated and unlocked by an operating force from the protruding end, and a spring insertion portion of the slider and a bottom surface of the first case. a coil spring disposed between the terminal plate and the terminal plate; A bushing type comprising a movable contact member that can slide into contact with the contact portion, is held between the holding pieces of the slider, moves up and down as the slider moves up and down, and switches the circuit connected to the terminal conductor of the terminal board. Changeover switch.