JPH0314760Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Technical Field of the Invention> The present invention relates to a multi-directional switch. In particular, the present invention relates to a multi-directional switch that controls a drive unit for adjusting the visibility of an automobile mirror in the vertical and horizontal directions.

<Prior art and its problems> Conventionally, this type of multi-directional switch was developed in 1983.
46940. In other words, a switch case is provided with a roughly cross-shaped opening on the top surface and a moving groove on the side thereof, and an insulator is fitted and fixed in the bottom opening, and a gap is provided in the horizontal direction near the top surface of the insulator in the opening. A circular cylinder protruding from the center of the plate and its partition plate, a spherical shaft head formed at the top of the circular cylinder, a rotation preventing protrusion protruding from the outer peripheral surface of the center of the head, and a protrusion protruding upward from the partition plate are fitted. It has sliding holes formed in four directions in the shape of a cross. A moving cavity is formed in the lower surface of the moving groove and is open to the upper surface of the insulator. Furthermore, a substantially cross-shaped pressing knob is provided. The pressing knob is provided with a concave spherical surface that is press-fitted into the spherical pivot head, and four sets of pressing pieces spaced about 90 degrees apart around the concave spherical surface. A fixed contact belonging to each pressing movable element is provided on the insulator.

However, in such a conventional example, there is no problem when pressing the pressing movable element in the regular cross-shaped position by the pressing pieces arranged in a cross shape, but when pressing it in an oblique direction, there is no problem. There were cases where the movable contact and the fixed contact corresponding to the direction were crossed and shot. In addition, since the movable contact is configured to be supported on a cantilever, it is not possible to provide strength to the movable contact, and a seesaw-type movable contact is not used, causing problems such as deformation of the movable contact and causing contact failure. It was hot. Furthermore, since the pressure knob is structured to be moved in multiple directions by a spherical pivot head, the pressure knob moves, which not only causes poor contact, but also makes assembly difficult and increases the thickness of the switch. increase

<Purpose of the invention> In view of the problems of the conventional method as described above, the present invention has been developed to create a circuit using a seesaw-shaped movable contact which is strong and does not short circuit even when the push knob is operated diagonally. To provide a four-way changeover switch which can switch between two directions and which can be made thinner.

<Structure of the invention> A substrate with a fixed contact formed in an opening on the lower surface, a movable contact that selectively contacts the fixed contact on the substrate, a guide for holding the movable contact, a curved recess formed in the upper part of the guide, and the curved recess. and a press knob pivotably supported via a spring, the press knob having a swing fulcrum and a movable contact press part formed at the center of the lower surface, and a peripheral end surface formed on the side circumferential wall of the switch case. The curved surface forms the side circumferential wall of the switch case into a radial curved surface centered on the swing fulcrum, and under normal conditions, the circumferential wall end surface of the press knob is in the upper part of the curved surface. It is characterized in that it is pressed into contact with the spring.

<Embodiment of the invention> An embodiment of the invention will be described below in detail based on the accompanying drawings.

1 to 4 show the multi-directional changeover switch SW of the present invention.

The multi-directional switch SW of the present invention has a switch case 1 having an elongated rectangular box shape on the upper surface, a four-way switch SW1 on the lower side in FIG. The switch SW2 is disposed integrally with the switch SW2, and a substrate 6 is fitted into the lower opening.

The four-way switch SW1 has a pressure knob 2, a guide 3, and a spring 4 in a rectangular space 12 defined by the side peripheral wall 11 of the switch case 1.
and a movable contact 5, and a fixed contact 7 (see FIG. 7) is provided on a substrate 6 fitted into the lower opening. A pressing knob 2 is provided on the upper inner surface of the peripheral wall 11.
A curved surface 11a is formed on which the peripheral end surface 21 of the curved surface 11a slides.

The pressure knob 2 has an acupressure part 22 having a recess 22a in the center, a peripheral wall 23 that hangs downward around four sides of the acupressure part 22, and a peripheral end surface 21 that projects in parallel from the peripheral wall 23. At the same time, there is a swing fulcrum 24 at the center of the inner surface and pressing parts 25 (25a, 25b, 2) in four directions around the swing fulcrum 24.
5c.25d) are protruding.

The guide 3 includes a rectangular support part 31 of the press knob 2 having a curved recess 31a at the upper part, and a movable contact 5 at the center of the rectangle integrally formed at the lower part of the support part 31.
The mounting portion 32 has a mounting hole 32b formed therein and a fitting groove 32a formed around the mounting hole 32b. The movable contact 5 includes a movable piece 51 having two parts 51a and 51b extending in a 90° direction;
It is comprised of a movable piece 52 having two contact pieces 52b, 52b arranged symmetrically with respect to the movable piece 51. Since the movable pieces 51 and 52 have the same shape, the movable pieces 51 (a and b) in FIG. 4 will be described in detail below.

The movable piece 51 has a mounting recess 5 to the guide 3 in the center.
1c, and contact pieces 51a and 51b extending in the 90° direction, and the contact pieces 51a and 51b extend from the mounting recess 51c so that their tips point upward, and have downwardly curved contacts at their tips. 51d and 51e are formed. Also, the contact piece 51 is attached to the mounting recess 51c.
A curved elastic portion 51f is provided on the opposite side of a, and the movable piece 51 is guided by the curved elastic portion 51f.
It is held in pressure contact with the

Those movable pieces 51, 52 have mounting recesses 51c,
They are assembled symmetrically around 52c and installed in the cross-shaped fitting groove 32a of the guide 3.

The pressing knob 2, the guide 3, the spring 4, and the movable contact 5 are connected to the peripheral wall 1 of the switch case 1.
1 is disposed within the space 12 defined by 1 as follows.

The movable piece 5 of the movable contact 5 is placed on the fixed contact 7 of the board 6.
1 and 52 are fitted and attached to the guide 3 so as to form a cross shape, and the guide 3 is fixed onto the substrate 6 with a screw 61. Then, the pressing knob 2 is attached to the guide 3 via a spring 4. At this time, the pressing part 25 of the pressing knob 2 is pressed against the contact piece 5 of the movable pieces 51 and 52.
1a, 51b, 52a, 52b, and the peripheral end surface 21 of the pressing knob 2 is in contact with the curved surface 11 of the same wall 11.
It is in sliding contact with the Therefore, when one direction of the pressing knob 2 is pressed, the pressing part of that part is pushed down and the contact pieces are pushed down, and the contact pieces 51d, 51e, 52d,
52e is brought into contact with the fixed contact. At this time, since the peripheral end surface 21 of the press knob 2 is always in sliding contact with the curved surface 11a of the peripheral wall 11, the press knob 2 does not shift and the movable contact 5 is reliably pressed and switched.

The left/right changeover switch SW2 is slidably disposed within a space 26 adjacent to the four-way changeover switch SW1. That is, the slide contacts 9 and 9' that contact the fixed contact 7 on the board 6, the slider 91 that holds the slide contact 9, and the click spring 92 that presses the slider 91 are separated by an air gap 2.
Switch case 1 by rod 93 disposed in 6
By sliding the slide 94, the slide contact 9 is switched on the fixed contact 7 to select and operate either the left or right mirror of the automobile. 5 and 6 show other embodiments of the guide 3, in which the guide 3 is used instead of the screw 61.
The guide 3 is fixed to the substrate 6 by providing a protrusion 62 on the bottom of the guide 3 and press-fitting the protrusion 62 into a fitting hole (not shown) in the substrate 6.

Next, an example of a switching circuit using the multi-directional switching switch SW of the present invention will be explained based on FIGS. 7 to 10. For example, when the press knob 2 is pressed upward, since the swing fulcrum 24 is in pressure contact with the curved recess 31a provided in the support portion 31 of the guide 3, the push knob 2 moves upward around the swing fulcrum 24. The pressing portion 25a presses down the movable piece 51a of the movable contact 51 to form a circuit as shown in FIG. At this time, the current is positive contact t - fixed contact T9 -
Movable piece 51a - Fixed contact T1 - T14 - Slide contact 9 - Fixed contact T13 - Contact T2 - Movable piece 51a -
Fixed contact T10 - negative terminal t and drive motor ML1 on the flowing side are operated upward.

Similarly, when the pressing knob 2 is pressed downward, the pressing part 2c presses down the movable piece 51b of the movable contact 5.
As shown in the figure, positive terminal t - fixed contact T9 - T11
- Movable piece 51b - Fixed contact T5 - T4 - T2 - Terminal 1
5-Drive motor ML1-Terminal t-Fixed contact T13-
Slide contact 9 - fixed contact T14 - T1 - T6 - movable piece 51b - fixed contact T12 - negative terminal t and flow,
Drive motor ML1 is reversed to move the mirror downward.

Also, if you press the pressure knob 2 to the left, the pressure part 2
d pushes down the movable piece 52a of the movable contact 5, and as shown in FIG. 9, positive terminal t - fixed contact T9 - movable piece 5
2a - Fixed contact T8 - T3 - T17 - Slide contact 9' - Fixed contact T16 - Terminal t - Drive motor ML2
- Terminal t - Fixed contact T5 - T7 - Movable piece 52a -
Fixed terminal T12 - negative terminal t and current, drive motor
Drive ML2 and operate the mirror to the left.

If you further press the pressure knob 2 to the right, the pressure part 2
b pushes down the movable piece 52a of the movable contact 5, and as shown in FIG. 9, the positive terminal t - fixed contact T9 - T11 -
Movable piece 52b - Fixed contact T4 - Terminal T5 - Drive motor ML2 - Terminal t - Fixed contact T16 - Slide contact 9' - Fixed contacts T10 - T12 - Negative terminal, reverses the drive motor ML2, and moves the mirror to the left. Activate it.

In order to operate the right mirror, it can be operated in the same manner as the left mirror by switching the left/right changeover switch SW2 and bringing the slide contacts 9, 9' into contact with the fixed contacts T15, T18.

<Effects of the invention> Since the present invention has the above-described configuration, the following effects can be obtained.

1. The pressing knob swings because the peripheral end surface of the pressing knob is always in sliding contact with the side circumferential wall of the switch case, so stable switching can be performed without the pressing knob being deviated and swinging.

2. The spring for automatic return of the pressure knob is compressed between the guide mounting part, making it possible to make it thinner.

3 The lower opening of the switch case has a structure in which a guide is fixed to the board to be fitted, a swinging fulcrum is formed on the guide, a pressing knob is attached to the guide, and the movable contact is pressed by a pressing part protruding downward from the pressing knob. Therefore, it is possible to provide a thin multi-directional switch that is easy to assemble.

[Brief explanation of the drawing]

1 to 4 show the first embodiment of the present invention, in which FIG. 1 is a top view and FIG. 2 is a
A sectional view, Fig. 3 is a BB sectional view of Fig. 1, Fig. 4
Figures A and B show the movable contacts; A is a top view;
B is a sectional view taken along line C-C in A, and FIGS. 5 and 6 are other embodiments showing the structure of the guide of the present invention, in which FIG. 5 is a sectional view, FIG. 6 is a plan view, and FIG. Figures 7 to 1
Figure 0 shows the circuit of the present invention, and Figure 7 is a circuit diagram showing the state when the mirror is operated upward. FIG. 8 is a circuit diagram when the actuator is operated downward, FIG. 9 is a circuit diagram when the actuator is actuated leftward, and FIG. 10 is a circuit diagram when the actuator is actuated rightward. DESCRIPTION OF SYMBOLS 1... Switch case, 11a... Side peripheral wall (curved surface), 2... Pressing knob, 21... Surrounding end surface, 2
4... Swinging fulcrum, 25 (25a, 25b, 25
c, 25d)...Press portion, 3...Guide, 31a
... Curved recess, 4... Spring, 5... Movable contact, 6... Board, 7... Fixed contact.

Claims (1)

[Scope of utility model registration request] A substrate with a fixed contact formed in the lower opening, a movable contact that selectively contacts the fixed contact on the substrate, a guide for holding the movable contact, a curved recess formed in the upper part of the guide, and a spring connected to the curved recess. and a press knob that is pivotally supported in a swingable manner, and the press knob forms a swing fulcrum and a pressing part of a movable contact at the center of the lower surface, and its peripheral end surface is always in contact with a curved surface formed on a side peripheral wall of the switch case. The curved surface forms a radial curved surface on the side circumferential wall of the switch case centered on the swinging fulcrum, and under normal conditions, the wall end surface of the pressing knob is pressed by the spring onto the upper part of the curved surface. A multi-directional switch case characterized by being made to appear to be in contact.