JPH0313953Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention allows tilting adjustment of the mirror angle in an automobile exterior mirror by operating a changeover switch that selects the left and right exterior mirrors, and an operation switch that adjusts the vertical and horizontal tilting of the mirror. This invention relates to a mirror tilt adjustment switch for an outer mirror.

Prior Art Various types of switches of this type have been known in the past. An example is shown in Figures 1 and 2. This switch includes switch knobs 2 and 3 located within a switch case 1 and located independently from each other. One switch knob 2 is a sliding switch knob and is used to select the left and right outer mirrors. The other switch knob 3 is a tilting operation switch knob, and is used to adjust the tilting of the selected outer mirror in the vertical and horizontal directions. As shown in the figure, the switch knob 3 is provided with push-in parts 3b, . 4, it is always biased to maintain its posture in the neutral position. The above spherical part 3a
is supported by the spherical receiving portion 1a of the case 1 so as to be tiltable in the above four directions, and a movable contact 5 is provided below the spherical surface.
A contact holder 6 is provided. Further, inside the case 1, a fixed contact 7 that cooperates with the movable contact 5 of the operation switch knob 3 and a fixed contact (not shown) that cooperates with the movable contact (not shown) provided on the lower surface of the changeover switch knob 2 are provided. A substrate 8 is provided. This substrate 8 constitutes a case bottom wall 9. Therefore, after selecting either the left or right outer mirror with the changeover switch knob 2, select any one of the operation switch knobs 3.
When one push-in part 3b is pushed in, the movable contact 5 below the push-in part 3b and the corresponding fixed contact 7 come into contact, closing a predetermined mirror drive circuit and tilting the mirror in a predetermined direction. It's getting old.

By the way, the above-mentioned mirror tilt adjustment switch is generally arranged on the instrument panel of a car, and since indicators and various operating members are arranged on the panel, the above-mentioned switch should be as small as possible. is desirable. Therefore, in order to reduce the size of the switch, it is desirable to assemble the two knobs integrally, rather than arranging them separately as in the conventional example.

However, in the above structure, the spherical part 3a is formed at the center of the operation switch knob 3, and the spherical part 3a is used as a fulcrum to tilt in four directions.
It was not possible to set up a The operation switch knob 3 and the changeover switch knob 2 had to be provided separately, which resulted in a problem that the space for arranging the switches inevitably became large.

Purpose of the invention An object of the invention is to provide a mirror tilt adjustment switch for an outer mirror, in which a changeover switch knob is incorporated in the center of the operation switch knob, the center of the operation switch knob can function as a fulcrum, and the size can be reduced. It is in.

Structure, Function, and Effect of the Invention In order to achieve the above object, the present invention provides a sliding switching knob in the center of the operation switch knob, and the operation switch knob is not tilted around a single point in the center. The knob is characterized in that a plurality of fulcrums are provided near the central portion of the knob, and the knob is configured to be tilted by changing the fulcrums for each tilting direction. In other words, the above-mentioned changeover switch knob is
The operation switch knob is slidably provided in a through hole formed in the center of the operation switch knob, and the operation switch knob includes an inner wall surface surrounding the switching switch knob and an outer wall surface surrounding the outer periphery of the inner wall surface, and the lower end of the inner wall surface is connected to the It is located closer to the bottom wall in the neutral position than the lower end of the outer wall surface, and when one push-in portion of the operation switch knob is pushed in, the lower end of the push-in side portion of the inner wall surface of the operation switch knob contacts the bottom wall and becomes a fulcrum, i.e. Due to the above pushing operation, the lower end of the push-in side of the inner wall surface descends and contacts the bottom wall and becomes a fulcrum, or the lower end of the inner wall surface that was previously in contact with the bottom wall at the neutral position of the knob becomes a fulcrum,
The entire operation switch knob is configured to tilt.

According to the above configuration, the changeover switch knob is incorporated in the center of the operation switch knob, and the lower end of the inner wall surface of the center of the operation switch knob functions as a fulcrum.
There is no problem with simultaneous tilting operations in different directions, and
The space required for arranging the switch is reduced by one switch knob compared to the conventional arrangement in which two knobs are provided. Further, since each switch knob is provided centrally, operability is improved. Furthermore, by devising the shape of the operation switch knob, the configuration is such that two or more switches are not turned on at the same time, thereby preventing short circuits and complicating the circuit. That is, when the inner wall surface of the operation switch knob is located closer to the bottom wall than the outer wall surface and one push-in part of the operation switch knob is pushed in, the lower end of the push-in side part of the inner wall surface of the operation switch knob touches the bottom wall. The contact forms a fulcrum, and the entire operation switch knob tilts via this fulcrum to turn on the switch. Therefore, during this operation, the inner wall surfaces corresponding to the other push-in portions do not come into contact with the bottom wall and cannot function as a fulcrum, so other switches cannot be turned on. In addition, even if all the push-in parts of the operation switch knob are pushed in, all of the inner wall surfaces will contact the bottom wall, so none of the inner wall surfaces will function as a fulcrum, and therefore the operation switch knob will be the fulcrum. Since it is not tilted around, neither switch is turned on. Therefore, the present invention eliminates the need for a complicated circuit configuration for preventing short circuits, and can prevent short circuits without increasing the number of parts.

Embodiments The present invention will be specifically described below based on embodiments shown in FIGS. 3 to 12.

As shown in FIG. 3, the mirror tilt adjustment switch according to the present embodiment has an operating switch knob 30 provided inside a switch case 20 so as to be tiltable in four directions: up, down, left and right, and a case inside the case 20 below the knob 30. A substrate 25 constituting the bottom wall 37 of 20 is provided,
The knob 30 includes a knob body 22, a movable contact holder 24 serving as a spring means for urging the knob body 22 to a neutral position, and a movable contact 29 supported by the holder 24.
The movable contact 29 is brought into contact with the fixed contact 27 of the substrate 25 by tilting the knob body 22, and the changeover switch knob 21 is slidably provided in the center of the operation switch knob 30.

As shown in FIGS. 4, 5 and 6, the switch case 20 has a peripheral wall 38 and a bottom wall 37, that is, a substrate 25.
The central part of the upper surface is recessed downward from the circumferential surface, and a through hole 20a having a square cross section is formed, and a switch knob 21 is installed in the through hole 20a.
are provided in a slidable manner, and on the upper surface around the through-hole 20a, the
Through-holes 20b, ..., 2 with trapezoidal cross-sections in four directions on the right
0b, and further forming locking claws 20c, 20c having spring force on a pair of opposing outer walls,
It is fixed to the mounting hole circumferential surface 28a of the mounting plate 28 to which the case 20 is mounted.

A switch knob 21 is slidably provided in the through hole 20a of the case 20. This changeover switch knob 21 has an operating section 21a protruding from the upper surface of a movable contact storage section 21b.
a protrudes upward from the case through-hole 20a, and as shown in FIG. The changeover switch knob 20a is selectively engaged with three moderation recesses 20f, 20f, and 20f formed on the inner wall surface of the storage wall 20e, and the changeover switch knob 21 is moved to the left outer mirror selection position L, the neutral position N, and the right side. The outer mirrors are respectively positioned at the selection position R. Two recesses 21d, 21d are provided on the lower surface of the storage section 21b.
are provided to compress the movable contacts 23, 23, respectively.
The movable contact 23 is made of a curved spring material, and the lower surfaces of both ends of the movable contact 23 slide and contact the fixed contact 26 on the substrate so as to be able to come and go.

In the through hole 20b of the case 20, push-in portions 22a, . fit. The knob main body 22 is a member having a square cross section in which a hole 22c is formed in the center to loosely fit the switch storage wall 20e forming the through hole 20a of the case 20. Between the push-in portions 22a formed on the upper surface of the knob body 22 and the adjacent push-in portions 22a, there are cut grooves 22 extending toward the center.
b,..., 22b are formed respectively, and each push-in part 2
2a can be loosely fitted into each through hole 20b of the case 20. Further, protrusions 22d, 22d are formed at the lower end of the inner wall surface 22f of each push-in portion 22a on the side of the switch storage wall, while protrusions 22d, 22d are formed at the lower end of the inner wall surface 22f of each push-in portion 22a.
Protrusions 22e, 22e are formed on the lower end of the outer wall surface 22g located on the far side with respect to 5, so that when the push-in part 22a is pushed into the case 20,
The protrusions 22d, 22d at the lower end of the inner wall surface descend, contact the base plate 25, and serve as a fulcrum, lowering the lower end of the outer wall surface and tilting the entire knob body relative to the case 20. A movable contact pressing portion 22h is formed between the inner wall surface 22f and the outer wall surface 22g.
be moved toward and away from.

Below the knob body 22, a movable contact holder 24, which is a square rubber plate and serves as a spring means, is placed on a substrate 25. This holder 24 has a square hole 2 in the center.
4a to permit sliding of the changeover switch knob 21 and to allow the inner wall surface 22 of the knob body 22 to
While each protrusion 22d of the knob body 22 contacts the substrate 25, a notch 24c is formed at each corner so that each protrusion 22e of the outer wall surface 22g of the knob body 22 contacts the substrate 25.
5 to restrict the tilting of the knob body 22. On the upper surface of the holder corresponding to each movable contact pressing portion 22h of the knob body 22, there are two mutually independent movable contact storage portions 24b, 24b for each pressing portion 22h.
A movable contact 29 is supported at the bottom of the lower surface of each storage portion 24b as shown in FIG. Therefore, each storage portion 24b comes into contact with each pressing lower surface of the knob body 22, and always urges the knob body 22 to the neutral position to separate the movable contact 29 and the fixed contact 27, and also to release the inner and outer wall surfaces. Each protrusion 22d, 22e
is separated from the substrate 25, and one of the pressing portions 22h is moved away from the pressing portion 22h by tilting the knob body 22.
Two supporting parts 24 of the holder 24 corresponding to h
b, 24b against its rubber elastic force to 1 in Fig. 7.
It is bent downward as shown by the dashed dotted line to bring each movable contact 29 into contact with each fixed contact 27 on the board.

Further, the substrate 25 is a rectangular plate made of an insulating material, and each locking protrusion 25 formed on the outer periphery
a and 25b are fitted and locked into respective locking holes 20d formed in the outer circumferential wall of the lower part of the case. As shown in FIG. 9, a large number of fixed contacts 26 and 27 are provided on the upper surface of this substrate 25, and the fixed contacts 26 and 27 are appropriately connected by printed wiring. That is, a total of six fixed contacts 26 (VL, MV, VR, HL,
MH, HR). Then, as shown in Figs. 10 and 11, MV and VL are connected to the movable contacts 23 and 23.
By connecting MH and HL, the left outer mirror is selected, and the movable contacts 23 and 2
Select the right side outer mirror by connecting MV and VR and MH and HR in step 3. Furthermore, two fixed contacts 27 are provided around the fixed contact 26 for the changeover switch knob, two for each movable contact 29 of each support portion 24b of the holder 24. Then, as shown in FIGS. 10 and 12, the fixed contact 2
When MV and B and E and C of the fixed contacts 27 are connected, the mirror vertical adjustment motor 32 rotates forward, and conversely, when MV and E and B and C of the fixed contacts 27 are connected, the motor 32 rotates reversely. do. On the other hand, MH and B and E and C of the fixed contacts 27 are connected, and the mirror left/right adjustment motor 31 rotates forward, and conversely, MH and E and B and C of the fixed contacts 27 are connected.
is connected, and the motor 31 rotates in reverse. In addition, in FIGS. 6 and 9, 25c is a hole for attaching each cord terminal. Further, in FIG. 10, numerals 35 and 36 indicate motors for the left and right outer mirrors, respectively.

Now, the above switch operates as follows. First, the changeover switch knob 21 is slid from the neutral position N to the left outer mirror selection position L, for example. Next, when a desired push-in portion 22a, for example, the upper side, of the knob body 22 of the operation switch knob 30 is pushed into the case, the protrusions 22d, 22d on the inner wall surface 22f of the knob body 22 come into contact with the base plate 25 and become a fulcrum, and the entire knob is The protrusion 22 on the outer wall surface 22g tilts.
e, 22e contact the substrate 25. This tilting of the knob body 22 causes the two support parts 2 of the holder 24 to
4b and 24b bend downward to each movable contact 29;
29 comes into contact with the two fixed contacts MV, B; E, and C, making both the fixed contacts MV and B; E and C conductive, thereby tilting the mirror upward. Thereafter, by pushing in the push-in portions 22a on the lower side, right side, or left side of the knob body 22, the mirror is tilted downward, right side, or left side. When the changeover switch knob 21 is located at the right side outer mirror selection position R, mirror tilt adjustment similar to that described above can be performed for the right side mirror.

According to this embodiment, the knob body 2 of the operation switch knob 30 can be adjusted without impairing the operability of the operation switch knob 30.
Since the switch knob 21 is slidably provided in the center of the switch knob 2, two switch knobs can be arranged using only the space for the operation switch knob 30, which reduces the above space and allows the switch knobs to be operated in a concentrated manner. It becomes easier to remove. In addition, each protrusion 22d on the inner wall surface 22f of the operation switch knob body 22 is positioned above the base plate 25 in the neutral position of the knob 22, and the push-in portion 22a of the knob 22 is inserted into the case 22.
0, the inner wall surface 2 of the knob body 22
After each protrusion 22d of 2f descends and contacts the substrate 25 and serves as a fulcrum, each protrusion 22 of the outer wall surface 22g
e is lowered, the tilting angle of the push-in part 22a becomes relatively small, and the case 20 and the knob body 2
The play between the two can be reduced. Furthermore, since the operation switch knob 30 can only be tilted in one of the four directions, it is possible to prevent a shot from occurring due to simultaneous tilting in two directions. That is, by devising the shape of the knob body 22 of the operation switch knob 30, the configuration is such that two or more switches are not turned on at the same time. That is, when the inner wall surface 22f of the knob body 22 is located closer to the bottom wall 37 than the outer wall surface 22g and one push-in part 22a of the operation switch knob 30 is pushed in, the inner wall surface 2 of the operation switch knob 30
2, a protrusion 22d at the lower end of the push-in side portion contacts the bottom wall 37 and serves as a fulcrum, and the entire operation switch knob is tilted via this fulcrum to turn on the switch. Therefore, during this operation, the inner wall surface 22 corresponding to the other pushing part 22a
Since f does not contact the bottom wall 37 and cannot function as a fulcrum, other switches cannot be turned on. Furthermore, even if all the push-in portions 22a, . . . , 22a of the operation switch knob 30 are pushed in, all the inner wall surfaces 22f, . Since it does not function as a fulcrum and therefore the operating switch knob 30 is not tilted about the fulcrum, neither switch is turned on. Furthermore, in FIG. 10, shot occurs when fixed contacts B and C and fixed contacts E and C are turned on at the same time. Applying this to FIG. 9, fixed contacts B and C are arranged at the lower right and lower right, respectively, and fixed contacts E and C are arranged at the upper left and upper left, respectively. Here, when the boundary of each push-in portion is pressed, the next contact is turned on. In other words, in the upper left, 2
Fixed contacts E and C of the set are respectively turned on. At the bottom left, fixed contacts MH and B turn on, and fixed contact MV
and E turns on. At the upper left, fixed contacts MV and B are turned on, and fixed contacts MH and E are also turned on. At the bottom left, two sets of fixed contacts B and C are turned on, respectively. That is, since fixed contacts B and C and fixed contacts E and C are never turned on at the same time, no shot occurs even if the boundary is pushed. Therefore, this embodiment does not require a complicated circuit configuration to prevent shot from occurring due to simultaneous tilting in two directions.
In addition, short circuits can be prevented without increasing the number of parts.

Note that the present invention is not limited to the above-mentioned embodiments, and can be implemented in various other ways. For example, a flange portion extending outward is formed at the lower part of the switch storage wall 20e of the case 20, and this flange portion is configured as a part of the bottom wall 37 of the switch case 20, and the protrusion 22d of the knob inner wall surface 22f is formed.
may be in contact with the flange portion.
Further, the lower end protrusions 22d, 22d of the inner wall surface of the knob body 22 of the operation switch knob 30 are brought into contact with the substrate 25 in advance at the neutral position of the knob body 22, and the protrusions 22d
The entire knob body 22 may be tilted using the fulcrums d and 22d. Also, a spring may be used instead of the holder 24 to perform the same action.

[Brief explanation of the drawing]

1 and 2 are a front view and a cross-sectional view taken along the line -- of FIG. 1, respectively, of a conventional switch, FIG. 3 is a front view of a switch according to an embodiment of the present invention, and FIGS. , and a sectional view taken along the line - in FIG. 3, and FIG. 6 is an exploded perspective view of the switch in FIG.
7 is an enlarged vertical cross-sectional view of the movable contact support part 24b of the holder 24, FIG. 8 is an enlarged cross-sectional view of the changeover switch knob, FIG. 9 is a view showing the printed wiring on the board 25, and FIG. 10 is an enlarged view of the operating switch 33. Wiring diagram showing the circuit configuration of the selector switch 34 and each motor, No. 1
1 is a diagram showing the connection relationship of each terminal connected to each fixed contact of the changeover switch knob 21, and FIG. 12 is a diagram showing the connection relationship of the terminals connected to each fixed contact of the operation switch knob. 21...Switch knob, 22...Knob body, 24...Holder, 25...Substrate, 26, 27
... Fixed contact, 29 ... Movable contact, 30 ... Operation switch knob, 33 ... Operation switch, 34 ...
Changeover switch, 37...bottom wall, 38...peripheral wall.

Claims (1)

[Scope of claim for utility model registration] Switch case 2 consisting of a peripheral wall 38 and a bottom wall 37
0 is provided with one sliding switch knob 21 for selecting the left and right outer mirrors, push-in portions 22a in four directions up, down, left and right with respect to the center as a fulcrum, and a movable contact 29 on the lower surface of each push-in portion 22a. In addition, one operation switch knob 30 has a spring means biased to the neutral position, each fixed contact 27 cooperates with each of the movable contacts 29, and the movable contact 23 provided on the lower surface of the changeover switch knob 21 cooperates with each other. and a fixed contact 26 provided at a predetermined location on the upper surface of the bottom wall, and when any one of the push-in portions 22a of the operation switch knob 30 is pushed in, it corresponds to the movable contact 29 below the push-in portion 22a. In the mirror tilt adjustment switch for the outer mirror, which is configured to make contact with a fixed contact 27 to tilt the mirror angle in a predetermined direction, the changeover switch knob 21 is slidable into a through hole 20a formed in the center of the operation switch knob 30. On the other hand, the operation switch knob 3
0 is the inner wall surface 22f surrounding the changeover switch knob 21
and an outer wall surface 22g surrounding the outer periphery of the inner wall surface 22f.
The lower end of the inner wall surface is located closer to the bottom wall 37 than the lower end of the outer wall surface in the neutral position, and when one push-in part 22a of the operating switch knob 30 is pushed in, the lower end of the inner wall surface
The lower end of the push-in side part of the inner wall surface 22f of 0 is the bottom wall 3
A mirror tilting adjustment switch for an outside mirror, characterized in that the entire operation switch knob is tilted by contacting the switch knob 7 as a fulcrum.