JPH0235157Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a changeover switch with a push button, which is applied, for example, to a device for adjusting the angles of left and right rear view mirrors of an automobile vertically and horizontally.

[Prior Art] Conventionally, this type of device generally has a plurality of fixed contact pieces disposed on the same plane with electrically insulating parts interposed therebetween.
For example, by sliding a plurality of movable contacts placed facing these into contact with and away from each other all at once, it is possible to switch between four directions, for example, up, down, left, and right. One was provided for each rearview mirror.

[Problem to be solved by the invention] However, in order to improve the reliability of switch operation, such conventional switches have to move beyond the electrical insulation part from a position where the movable contact reliably overlaps with a certain fixed contact. The sliding stroke of the movable contact must be long enough in each direction, and the distance between the fixed contact pieces must be wide enough so that the movable contact can slide to a position where it reliably overlaps with another fixed contact piece. Therefore, the sliding surface requires a large area, which has the disadvantage that the four-way switch itself becomes large.Moreover, two such four-way switches must be provided, so the overall size is Furthermore, it has various disadvantages such as being large and not being able to be made compact.

The object of the present invention is to provide a changeover switch with a push button that is small and reliable in operation.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a movable contact piece that can be displaced in the front and back direction in a housing, and normally closed/normally open contacts that come into contact with and separate from the movable contact piece. The connection of the movable contact piece is switched from a normally closed contact to a normally open contact by tilting the operating lever or pushing a shaft member inserted into the hollow portion of the operating lever. A partition plate and a printed circuit board are disposed inside the housing, and a spring receiving portion is provided at each rear end of the operating lever and the shaft member to compress a restoring spring between the partition plate and the partition plate. A plurality of protrusions are made to protrude toward the partition plate from the center of opposing sides of the spring receiver of the operating lever and one diagonal corner, and a center protrusion is made to protrude from the center of the spring receiver of the shaft member. The partition plate has a notch and a center hole that allow the protrusion and the center protrusion to be pushed toward the printed circuit board when the operating lever and shaft member are pushed in, and furthermore, the partition plate has a notch and a center hole that allow the protrusion and the center protrusion to be pushed toward the printed circuit board side when the operating lever and shaft member are pushed in. The base end is attached to a printed circuit board, and includes a plurality of movable contact pieces in the shape of a leaf spring that can be displaced in the front and back direction by tilting the operating lever or pushing the shaft member, and a movable contact piece when the operating lever and the shaft member are restored. It is characterized by providing a normally closed contact that contacts the contact piece, and a normally open contact that contacts the movable contact piece when the operating lever is tilted or the shaft member is pushed.

[Example] This invention will be described with reference to an example shown in the drawings.

FIG. 1 is a perspective view of the switch with a push button according to the present invention, and FIG. 2 is an enlarged longitudinal cross-sectional view.

1 and 2, reference numeral 1 denotes a housing made of electrically insulating material such as synthetic resin, and has a cross-shaped opening 2 formed in the center of the front wall, and a stepped portion 3 slightly deep in the front wall. is formed. A printed circuit board 4 is fixed to the rear end of the housing 1, and a connector 5 is attached behind the printed circuit board 4.
Further, a quadrilateral partition plate 6 made of an electrically insulating material such as synthetic resin is fixed between the stepped portion 3 of the housing 1 and the printed circuit board 4. As shown in FIG. 6, around the partition plate 6, a total of four notches 7, 8, 9, 10 and a center hole 11 are formed, one on each opposite side and one on each diagonal corner. ing.

An operating member 12 made of an electrically insulating material such as synthetic resin is inserted into the housing 1 .
The operating member 12 includes a projecting portion 13 that is locked to the stepped portion 3 of the housing 1, a spring receiving portion 14 formed slightly in front of the projecting portion 13, and an opening 2 formed in front of the spring receiving portion 14. an operating lever 1 extending through the
It consists of 5. A spring 16 is provided between the spring receiving part 14 and the partition plate 6, and the restoring force of the spring 16 causes the operating member to move forward (in FIG. 2) so that the overhang part 13 is pressed against the step part 3. right)
is being energized towards. On the back side of the overhanging portion 13, there are cutouts 7, 8, 9,
There are protrusions 17, 18, 19 in 4 places corresponding to 10,
20 are respectively formed, and when the operating member 12 is tilted using one side of the overhang 13 as a fulcrum, the protrusions 17, 18, 19 or 20 are located on the opposite side of the fulcrum.
is adapted to protrude behind the partition plate 6 beyond the corresponding notch 7, 8, 9 or 10.

The operating lever 15 is formed with a hollow portion 21 that is open at the rear end and the left front end, and the front end of the operating lever 15 has a hollow portion 21 that projects from the left front end opening due to the restoring force of a spring 22, as shown in FIG. A push button 23 is provided. Hollow part 21
A shaft member 24 made of an electrically insulating material such as synthetic resin is housed inside the shaft member 24 so as to be movable forward and backward, and a spring receiving portion 25 expanded in the radial direction is formed at the rear end of the shaft member 24.
A spring 26 is provided between the spring receiving portion 25 and the partition plate 6, and the restoring force of the spring 26 causes the shaft member 24 to
The spring receiving portion 25 is urged forward so as to be pressed against the spring receiving portion 14. A protrusion 27 is also formed at the rear end of the shaft member 24 at a position corresponding to the center hole 11 of the partition plate 6, and the front end of the shaft member 24 is provided with a projection 27 that is formed when the push button 23 is pressed, as shown in FIG. The shaft member 24 is cut diagonally so that it is pushed backward (to the left in FIG. 2) by the pressing force, and when the shaft member 24 is pushed in, the protrusion 2
7 projects beyond the center hole 11 and behind the partition plate 6.

As shown in FIGS. 8 and 9, the front surface of the printed circuit board 4 has normally open contacts 28, 29, 30, 31, 32, and 33 closely fixed to the printed circuit board 4, and Normally closed contacts 34, 35, 36, 37, 38, 39 are arranged facing forward and spaced apart from normally open contacts 28, 29, 30, 31, 32, 33, and the base Movable contact pieces 46, 47, 48, 49, 50, and 51 in the form of leaf springs are provided, each of which has ends 40, 41, 42, 43, 44, and 45 fixed to the printed circuit board 4, respectively. Movable contact pieces 46, 47, 48, 49,
50, 51 are normally closed contacts 34, 35, 36, 3 with a certain amount of spring pressure unless external force is applied.
7, 38, and 39 are bent as appropriate. Two movable contact pieces 5 located in the center
0 and 51 are integrally attached by a mounting plate 52 made of electrically insulating material such as synthetic resin. In addition, as shown in FIG. 9, the normally closed contacts 34 to 39 are
Each has leg portions 34a to 39a, which are inserted into small holes 34b to 39b drilled in the printed circuit board 4 and fixed thereto. In Figure 8, points 53, 54,
55 and 56 indicate the positions pushed by the protrusions 17, 18, 19, and 20 when the operating member 12 is tilted in each direction, and the point 57 indicates the position pushed by the protrusion 27 when the shaft member 24 is pushed in. point 5
3, 54, 55, 56, 57 are pressed, the connection of the movable contacts 46, 47, 48, 49, 50, 51 changes from the normally closed contacts 34, 35, 36, 37, 38, 39 to the normally open contacts 28, 29, 30, 31, 32, 33
It is starting to switch to .

The operation of the push-button changeover switch constructed as described above will be explained based on an example in which it is applied to a device for adjusting the angles of left and right rear view mirrors of an automobile vertically and horizontally.

Now, the left rear mirror is motor ML1,
Equipped with ML2, the right back mirror is a motor MR.
1. It is assumed that the robot is equipped with MR2 and is configured to move vertically and horizontally using the following combinations. In other words, when motor ML1 or MR1 rotates in the normal direction, it moves upward, and when it rotates in reverse, it moves downward;
2 or MR2 moves to the left when it rotates forward, and moves to the right when it rotates in reverse.

For the left and right rearview mirrors configured in this way, normally open contacts 29 and 3 are connected to the positive and negative terminals of the DC power source, as shown in FIG.
1 and normally closed contacts 35 and 37, respectively,
Connect normally closed contacts 38 and 39 to the positive terminals of motors ML1 and ML2, respectively, and
Connect the normally open contacts 32 and 33 to the positive terminal of MR2, respectively, and connect the motors ML1, ML2, MR1,
The base end 43 is commonly connected to the negative side terminal of MR2, and the base ends 40, 41, and 42 are connected together, and the normally open contacts 28, 30 and the base end 44 are connected, and the normally closed contacts 34, 36 and the proximal end 45 are connected.

In the switch with a push button connected in this way, when no external force is applied to the operation lever 15 and the push button 23, the protrusions 17, 18, 19, 2
0 and 27 do not protrude behind the partition plate 6, the movable contact pieces 46, 47, 48, 49, 50, 5
1 are normally closed contacts 34, 35, 36, 37,
38, 39 in the position shown in Figure 10, so that the motors ML1, ML2, MR1, MR
2 is not connected to the power supply, so both the left and right rearview mirrors remain stationary.

When the operating lever 15 is tilted upward by applying an external force without pressing the push button 23, the operating member 12 is tilted using the lower side of the overhang 13 as a fulcrum, and the protrusions 17,1
8 protrudes behind the partition plate 6 beyond the notches 7, 8, so that the points 53, 54 are pushed by the protrusions 17, 18, and the movable contact pieces 46, 47 become normally open contacts 28, 29.
As a result, the motor ML1 rotates in the normal direction and the left rearview mirror is moved upward. Also, without pressing the push button 23, the operating lever 1
5 is tilted downward, the operating member 12 is tilted using the upper side of the overhang 13 as a fulcrum, and the protrusions 19 and 20 extend beyond the notches 9 and 10 and protrude behind the partition plate 6.
Therefore, the points 55 and 56 are pushed by the protrusions 19 and 20, and the movable contact pieces 48 and 49 are connected to the normally open contacts 30 and 31, which causes the motor ML1 to reverse and move the left rear mirror downward. . Also, without pressing the push button 23, the operating lever 15
When the operation member 12 is tilted to the left, the operating member 12 is tilted using the right side of the overhang 13 as a fulcrum, and the protrusion 18 touches the partition plate 6.
The movable contact piece 47 is connected to the normally open contact 29 because the point 54 is pushed by the projection 18 and the movable contact piece 47 is connected to the normally open contact 29.
As a result, the motor ML2 rotates in the normal direction, and the left rearview mirror is moved to the left. Further, when the operating lever 15 is tilted to the right without pressing the push button 23, the operating member 12 is tilted using the left side of the overhang 13 as a fulcrum, and the protrusion 20 protrudes behind the partition plate 6, so that the point 56 protrudes. 20, the movable contact piece 49 is connected to the normally open contact 31, thereby causing the motor ML2 to reversely move the left rearview mirror to the right.

Next, when the operating lever 15 is tilted upward by applying an external force while pressing the push button 23, the protrusion 1
7 and 18, the protrusion 27 extends beyond the center hole 11 and protrudes behind the partition plate 6, so that the points 53 and 5
4, 57 are pushed by the protrusions 17, 18, 27, and the movable contact pieces 46, 47, 50, 51 are normally open contacts 28, 2.
9, 32, 33, thereby the motor
MR1 rotates forward and the right rearview mirror is moved upward. Further, when the operating lever 15 is tilted downward while pressing the push button 23, the protrusions 19, 20, 27 protrude behind the partition plate 6, so that the points 55, 56, 57 are
7, the movable contact pieces 48, 49, 50, 51 are connected to the normally open contacts 30, 31, 32, 33, so that the motor MR1 is reversely rotated and the right rearview mirror is moved downward. Further, when the operating lever 15 is tilted to the left while pressing the push button 23, the protrusions 18, 27 protrude behind the partition plate 6 and press the points 54, 57, so that the movable contact pieces 47, 5
0 and 51 are connected to the normally open contacts 29, 32, and 33, which causes the motor MR2 to rotate normally and move the right rearview mirror to the left. Further, when the operating lever 15 is tilted to the right while pressing the push button 23, the protrusions 20, 27 protrude behind the partition plate 6 and press the points 56, 57, so that the movable contact pieces 49, 50, 51 move to the normally open contact 31. , 32, and 33, thereby causing the motor MR2 to reversely move the right rearview mirror to the right.

When the external force is removed from the operating lever 15 at each of the up, down, left, and right tilting positions, the operating member 12 automatically returns to the neutral position where it does not tilt in any direction due to the stretching force of the spring 16, as shown in FIGS. He will make a comeback. Further, when the external force is removed, the push button 23 automatically returns to the protruding position shown in FIGS. Second,
It will automatically return to the front end position shown in Figure 3. Therefore, when the rear view mirror is at the desired angle during angle adjustment and you release your hand from the operating lever 15, the movable contact pieces 46, 47, 48, 49, 5
0 and 51 are normally closed contacts 34, 35, 36,
37, 38, and 39, and the rearview mirror remains stationary at that position.

In the above embodiment, the push button 23 was provided at the front end of the operating lever 15, but the present invention is not limited to this.Also, in the above embodiment, the push button 23 provided with the spring 22 was used, but instead of this, the push button 23 was provided at the front end of the operating lever 15. 11,1
As shown in FIG. 2, a push button 23' having a deep hole 58 and a shallow hole 59 may be used. In this case, a protrusion 60 is formed at the front end of the shaft member 24' so that the protrusion 60 has a deep hole. When it is fitted into the hole 58, the shaft member 2
4' is at the front end position, and the protrusion 60 is located in the shallow hole 59.
By switching the push button 23', the shaft member 24' is advanced or retreated so that the shaft member 24' is in the rearwardly pushed position when the shaft member 24' is inserted into the housing.
Further, in the above embodiment, the normally open contacts 28, 29, 30,
31, 32, 33, normally closed contact 34, 35, 36,
37, 38, 39 and movable contact pieces 46, 47, 4
Although six each of 8, 49, 50, and 51 are provided, the present invention is not limited to this.Furthermore, in the above embodiment, the present invention is applied to a device for adjusting the angle of the left and right rearview mirrors of a car vertically and horizontally, but the present invention is not limited to this. In addition, this invention includes various modifications of the above embodiments,
It goes without saying that correction is possible.

[Effects of the invention] Since this invention is configured as described above, the connection of the corresponding movable contact piece can be switched from a normally closed contact to a normally open contact by tilting the operating member, and it is also possible to change the connection of the corresponding movable contact from a normally closed contact to a normally open contact. The connection of the corresponding movable contact can be changed from a normally closed contact to a normally open contact.
Therefore, compared to conventional switches in which the connection is changed by sliding a movable contact, the switch has excellent effects such as being able to be constructed in a smaller size.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the switch with push button of the present invention, Fig. 2 is an enlarged vertical sectional view of Fig. 1, Fig. 3 is an enlarged cross-sectional plan view of the end of the operating lever, and Fig. 4 is the same as Fig. 3. Fig. 5 is an enlarged cross-sectional plan view of the push button in the pressed state, Fig. 5 is a vertical cross-sectional rear view taken from the - line in Fig. 2 in the direction of the arrow, Fig. 6 is a front view of the partition plate, and Fig. 7 is a cross-sectional view of the operating member. 8 is a front view of the printed circuit board, FIG. 9 is an enlarged perspective view of the printed circuit board,
Fig. 10 is a wiring diagram showing a connection example of normally open and normally closed contacts and a movable contact piece, Fig. 11 is a plan view showing another embodiment of this invention, and Fig. 12 is the end of the operating lever in Fig. 11. FIG. 1, 1': housing, 2: opening, 3: step,
4: Printed circuit board, 5, 5': Connector, 6: Partition plate, 7, 8, 9, 10: Notch, 11: Center hole,
12: Operating member, 13: Overhanging portion, 14, 25: Spring receiving portion, 15, 15': Operating lever, 16, 22,
26: Spring, 17, 18, 19, 20, 27: Projection, 21: Hollow part, 23, 23': Push button, 2
4, 24': shaft member, 28, 29, 30, 31,
32, 33: Normally open contact, 34, 35, 36, 3
7, 38, 39: Normally closed contact, 40, 41, 42,
43, 44, 45: proximal end, 46, 47, 48, 4
9, 50, 51: Movable contact piece, 52: Mounting plate, 5
3, 54, 55, 56, 57: point, 58: deep hole,
59: Shallow hole, 60: Protrusion.

Claims (1)

[Scope of Claim for Utility Model Registration] A hollow operation lever 15 that is tiltably protruded from the inside of the housing 1 to the outside, and a shaft member 24 that is slidably inserted in the longitudinal direction of the hollow operation lever 15. A partition plate 6 disposed at a position to divide the inside of the housing into front and rear parts; A printed circuit board 4 disposed at the rearmost part of the housing 1 facing the partition plate 6; and behind each of the operating lever 15 and the shaft member 24. First and second restoring springs 16 and 26 provided between the spring receivers 14 and 25 formed at the ends and the partition plate 6
, a push button 23 for advancing and retracting the shaft member attached to the externally projecting end of the operating lever 15; a plurality of protrusions 17 to 20 protruding from the center of the spring receiving portion 25 of the shaft member 24;
The partition plate 6 is provided with a central protrusion 27 that protrudes toward the partition plate 6, and when the operating lever 15 and the shaft member 24 are pushed in, the protrusions 17 to 20
and notches 7 to 10 and a center hole 11 for allowing the central protrusion 27 to be pushed toward the printed circuit board 4, and a base end is attached to the printed circuit board 4 on the front surface of the printed circuit board 4 for operation. A plurality of leaf spring-shaped movable contact pieces 46 to 5 that can be displaced in the front-rear direction by tilting the lever 15 or pushing the shaft member 24
1, normally closed contacts 34 to 39 that contact the movable contact piece when the operating lever and shaft member are restored, and normally open contacts 28 to 33 that contact the movable contact piece when the operating lever is tilted or the shaft member is pushed. A changeover switch with a push button.