JPH0896661A - Push type switch device - Google Patents

Abstract

PURPOSE: To provide a push type switch device which can be assembled from one direction. CONSTITUTION: A third light conductive member 42 is formed by projecting in a square cylinder shape toward the outside of a box body from both outer walls 102 of a box body-shaped reflector 106. Second projecting parts 44 and 101 are formed over the other end from the projecting directional one end of the third light conductive member 42. A single-row first protecting part 43 whose one end is opened in both inner walls of a cylindrical pressing switch part 20 is formed. The first projecting part 43 is inserted between these second projecting parts 44 and 101 so as to be loosely fitted. Therefore, since a printed circuit board 26, the reflector 106, the pressing switch part 20 and a design case 12b can be installed from one direction, assemblability can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a push-type switch device used in various consumer equipment such as an air conditioner for automobiles, cassette decks, radios, VTRs, etc.
In particular, it relates to an illuminated push-type switch device.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 7, an illuminated push type switch device is arranged in order from the upper side to the lower side in the figure.
The printed board 26, the rubber plate 29a, the slider 16a,
16b, design case 12a, press switch parts 20, 2
2 is provided. Electrical wiring is printed on the printed circuit board 26, and an issuing diode 33 for notifying an occupant of an operating state, a lamp 32 for illuminating the nighttime pressing switch portions 20 and 22, and a plurality of switch contacts (not shown) are provided. ing.

Below the printed circuit board 26, a rubber plate 29a having contact portions 27a and 27b in which the portion facing the switch contact is expanded is disposed. Below the rubber plate 29a, sliders 16a and 16b having contact plates 30a and 30b facing and contacting the contact portions 27a and 27b and guiding the light emitted from the lamp 32 are respectively arranged. There is. The sliders 16a and 16b are operated in the vertical direction in the figure to contact the contact plates 30a and 30b.
b pushes up the contact portions 27a and 27b,
27b and the switch contact are brought into contact with each other.

Below the sliders 16a and 16b, pressure switch portions 20 and 22 forming a design surface are arranged, respectively. These functional parts have openings 100
It is arranged in the design case 12a in which a is formed,
This design case 12a and sliders 16a and 16b
Rails 34a, which serve as guides for moving the sliders 16a and 16b in the vertical direction in the figure, are provided in each.

In the method of assembling such an illuminated push type apparatus, first, the display surface 14a of the design case 12a is directed downward, and the sliders 16a and 16b are respectively attached to the slider-1.
The design case 12a and the sliders 16a and 16b are assembled so that the rails 34a provided on 6a and 16b and the rails 34b of the design case slide. Then, the printed circuit board 26 covered with the rubber plate 29a is attached to the contact plates 30 of the sliders 16a and 16b from above in the drawing.
contact points 27a and 27b between a and 30b and the rubber plate 29a
Insert and fix so that and come into contact with each other. Next, the design case 12a is reversed in the vertical direction in the figure, and the press switch unit 2
Nos. 0 and 22 were attached to the sliders 16a and 16b from above.

[0006]

However, in such an assembling method, since the design surface 14a of the design case 12a is assembled so as to face downward in the drawing, the display surface 14a is damaged. Further, since the design case 12a is mounted upside down, there is a problem that the assembly process becomes complicated.

Therefore, in order to assemble the illuminated push switch device from one direction without damaging the display surface 14a,
It is conceivable to arrange the sliders 16a and 16b on the printed circuit board 26 to which the rubber plate 29a is attached and cover the design case 12a from above. However, in such an assembling method, the opening 10 of the design case 12a is
There is a problem that it is very difficult to slide the rails 34a of the sliders 16a and 16b and the rails 34b of the design case 12a while positioning the 0a and the sliders 16a and 16b.

In view of the above problems, the present invention has been made in view of the above problems.
An object of the present invention is to provide a push-type switch device which can be assembled from one direction and which can be easily assembled.

[0009]

According to the structure of the present invention as set forth in claim 1, an electric board electrically connected to a light source and one end side of the electric board are arranged on the electric board to guide a light from the light source through a light guide path. A light guide member which guides light to the other end side through the pressing member, a pressing portion which is slidably arranged on the other end side of the light guide member and closes a light guide passage of the light guiding member, and a displacement of the pressing portion. A switch element that is electrically connected and disconnected, and a first sliding portion is provided on one of an inner wall and an outer wall of the light guide member, and at a position of the pressing portion facing the first sliding portion. A second sliding portion is provided, and the pressing portion is slidably displaced with respect to the light guide member while the first sliding portion is restricted by the second sliding portion. To do.

The push-type switch device may be arranged in a box body having an opening, and the pressing portion may be arranged in the opening. Also,
The light guide member is integrally formed in a box shape with one end open, and the light guide passage includes a second light guide passage formed from a bottom wall of the box body toward the light source, and a second light guide passage. The second light guide passage is provided in optical communication with the second light guide passage, and the third light guide passage is formed from the bottom wall toward the outside of the box body.

A switch element may be arranged on the bottom wall of the box body facing the pushing portion.
In addition, a holding member that holds and stores other functional components is integrally formed with the light guide member. Also, the pressing portion,
It has a tubular shape with one end open, and the opening end has a push-in portion extending from the opening end in a substantially vertical direction.

Further, the first sliding portion comprises a first protruding portion protruding in two rows, and the second sliding portion comprises a second protruding portion protruding in one row. The second protrusion is loosely fitted between the protrusions, and is slidably displaced.

[0013]

According to the structure of the present invention described above, the push-type switch device is assembled as described below. First, a light guide member is disposed on an electric board electrically connected to the light source, one end side of which is an electric board side and which guides light from the light source to the other end side through a light guide path. A pressing portion that is slidable on the other end side of the light guide member and closes the light guide passage of the light guide member is provided, and the first slide provided on one of the inner wall and the outer wall of the light guide member. The portion is slidably displaced with respect to the light guide member while being regulated by the second sliding portion provided at a position facing the first sliding portion of the pressing portion. As described above, the first sliding portion is provided on one of the inner wall and the outer wall of the light guide member, and the second sliding portion is provided at a position facing the first sliding portion of the pressing portion. The optical member and the pressing portion can be assembled from one direction, and the assembling property can be improved.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings. FIG. 2 shows a front view of a panel equipped with this push-type switch device. The panel 10 is used in a vehicle air conditioner, and is usually arranged in the front of the vehicle compartment. The panel 10 is an air conditioner operation panel that is operated by a passenger to obtain a desired air conditioning state.

The refrigeration cycle (not shown) of the vehicle air conditioner in this embodiment is a vehicle internal combustion engine,
That is, the rotational driving force of the engine
A refrigerant compressor (for example, a compressor) that rotationally drives its rotary shaft via a magnet clutch) to suck, compress, and discharge the refrigerant, and a condenser that condenses the atomized refrigerant that has become high temperature and high pressure by this refrigerant compressor. Device (for example, a condenser), a decompression expansion device (for example, an expansion valve) that decompresses the refrigerant condensed by the condenser, and an evaporator (for example, an evaporator) that evaporates the refrigerant decompressed by the decompression expansion device. ) Is a well-known thing which circulates a refrigerant in order.

The panel 10 includes an auto switch 39, an off switch 40, an air conditioner (A /
C) A switch 37, a mode (MODE) switch 38, and a temperature setting device 41 are provided. Temperature setting device 41
Is a vehicle interior temperature setting means for setting a preset temperature in the vehicle interior desired by an occupant, and specifically, the temperature setting knob 41a.
Is. Then, by rotating the temperature setting knob 41a clockwise in the figure, the set temperature can be set high, and conversely, by rotating it counterclockwise, the set temperature can be set low. There is.

The air conditioner switch 37 determines whether or not the operator operates the above-mentioned magnet clutch, that is, whether or not to circulate the refrigerant in the refrigeration cycle of the vehicle air conditioner. The mode switch 38 is provided in the passenger compartment, and is a face mode for blowing air from a face outlet (not shown) for blowing air toward the upper half of the occupant, and for blowing air toward the lower half of the occupant. A foot mode that blows air from a foot outlet (not shown), a bi-level mode that blows air from both the face outlet and the foot outlet, and a defroster blow that blows air mainly toward the inner surface of the windshield of the vehicle. It is a mode changeover switch that selects which mode, in the defroster mode in which air is blown out from an outlet (not shown), is used to operate the air conditioner.

The mode switch 38 of this embodiment is
The mode is switched in the cycle of the face mode, the bi-level mode, the foot mode, and the defroster mode, that is, each time the mode switch 38 is pressed, the mode is sequentially switched in accordance with this cycle. Auto switch 39
Is turned on so that the temperature inside the vehicle becomes the set temperature set by the temperature setting knob 41a described above.
The target blowout temperature of the air blown from the above-mentioned blowout port is calculated by U, and how much air is blown out from which blowout port so that the occupant is in the most comfortable air-conditioning state according to the target blowout temperature. Is an air conditioning state automatic control switch for automatically controlling various functional parts electrically connected to the ECU.

The auto switch 39, once pushed by the operator, automatically controls various air-conditioning states as described above. However, when the mode switch 38 is pushed by the operator thereafter, the operator is The air conditioner operates in the desired mode. That is, only the mode is determined by the intention of the operator. The off switch 40 is an air conditioner operation stop switch that, when pressed once, stops a part or all of the operation of the vehicle air conditioner.

The structure of the panel 10 equipped with the push-type switch device of the present invention will be described below. The same components as those described in the related art will be described with the same numerals. FIG. 3 shows a sectional view taken along the line AA of FIG. Figure 3
As shown in FIG. 3, the panel 10 includes a printed circuit board 26, a reflector 16, a rubber plate 29b, pressure switch portions 20, 21, 22, 23, and a design case 12b in this order from the top in the drawing.

The printed circuit board 26 has a flat plate shape and has electric wiring printed thereon. And the printed circuit board 2
6, a light emitting element for informing an occupant by emitting an operating state of the air conditioner, specifically, the lamps 32 and 25 and the light emitting diode 33, a rotational position of the temperature setting knob 41a set by the occupant, that is, a setting Switch element 1 which is an electric signal converting means for converting temperature into an electric signal
7, switch contacts 28a to 28d, etc. are electrically connected. The printed circuit board 26 constitutes an electric board.

Further, the switch element 17 is provided with the rotary shaft 11 which is fixedly interlocked with the above-mentioned temperature adjusting knob 41a. That is, when the temperature adjusting knob 41a is rotated, the rotating shaft 11 is also rotated accordingly, and an electric signal corresponding to the set temperature corresponding to the rotating position is sent to the ECU. The reflector 106, which constitutes the light guide member of the present invention, is formed in a box shape with ABS resin or the like, and is a light guide member that guides the light emitted from the lamps 25 and 32 to the design surface side. is there. Further, one end side of the reflector 106 is open, and the open end is in contact with the upper surface 46 of the printed board 26. That is, the reflector 106 is arranged such that one end side of the reflector 106 abuts on the printed circuit board 26.

The reflector 106 is attached to the printed circuit board 26 by a claw fitting or a fixing member such as a screw.
Has been fixed. The reflector 2 has a lamp 2
Reflector 10 is provided at a position facing 5 and 32, respectively.
6 is recessed in the box with respect to the bottom wall 48, and the lamps 25, 32
The second which inclines toward the direction and constitutes the light guide passage 45a
The light guide member 45 is formed. In addition, in the present embodiment, the second light guide member 45 has a conical cylindrical shape.

That is, the second light guide member 45 is a light guide member that guides the light emitted from the lamps 25 and 32 to the design surface side. Further, as shown in FIG. 3, the reflector 106 communicates with the light guide passage 45a of the reflector 106, is branched into two with the bottom wall 48 of the reflector 16 as a boundary, and has a rectangular tubular shape toward the outside of the box body. Light guide passage 45a protruding vertically to
The third light guide member 42 constituting the above is formed. The third light guide member 42 is in optical communication with the second light guide member 45, and further guides the light guided by the second light guide member 45 toward the design surface side and presses it. The inner surface 55 of the switch parts 20 to 23 is illuminated. As a result, light is emitted to the outside from the display surfaces of the pressure switch units 20 to 23, and when the pressure switch units 20 to 23 are difficult to see, such as at night, the passengers can be sure to visually recognize the operating state of the vehicle air conditioner. You can

FIG. 4 is a sectional view taken along the line D--D in FIG. 1, and the details of the reflector 106 will be described. On both outer walls 102 of the third light guide member 42, as shown in FIG. Second protruding portions 44 and 101 are formed so as to protrude in two rows from the other end. Also, reflector 1
As shown in FIG. 3, the 06 has a quadrangular cylindrical storage portion 47 that is vertically recessed in the box body with respect to the bottom wall 48 of the reflector 106, as opposed to the light emitting diode 33. The storage portion 47 holds and stores the wiring legs of the light emitting diode 33.

On the bottom wall 48 of the reflector 106 facing the switch element 17, there is formed a first recess 15 recessed inwardly of the box. Then, in the first hollow portion 15,
A fixing hole 13 is formed, and the rotary shaft 11 of the switch element 17 is supported through the fixing hole 13. The storage portion 47 and the fixing hole 13 form a holding member.

On the upper surface of the bottom wall 48 of the reflector 16,
The switch contact 28a is provided at a position close to the third light guide member 42.
28d are attached. Switch contact 28a-
28d is electrically connected to the printed board 26 by a film-shaped wiring board (not shown). Further, the printed board 26 and the wiring board can be attached / detached by an attaching / detaching means such as a cartridge.

When the switch contacts 28a to 28d come into contact with a contact portion 27b of a rubber plate 29b, which will be described later, the switch contacts 28a to 28d send electric signals to various functional parts via the printed circuit board 26, so that the functional parts are brought into an air conditioning state desired by the operating vehicle. To control. FIG. 1 shows an enlarged view of a main part of FIG. The pressure switch units 20 and 22 and the adjacent pressure switch units 21 and 23
Since and have the same structure, here, the left side of FIG. 1 is enlarged.

The rubber plate 29b is made of silicon rubber or the like in a plate shape and is disposed on the switch contacts 28a to 28d. Then, the switch contact 28 is provided on the rubber plate 29b facing the switch contacts 28a and 28b.
Second recesses 35a, 35b are formed so as to form a predetermined gap with a, 28b, and contact parts 27a, 27b contacting the switch contacts 28a, 28b are formed in the recesses.
Is provided. The switch contacts 28a-28b
The second recesses 35a and 35b form the switch element of the present invention.

The pressing switch portions 20 and 22 constitute the pressing portion of the present invention, and are formed of ABS resin or the like into a quadrangular prismatic cup shape, and the cross-sectional shape thereof is U-shaped. . A vertically extending pushing portion 107 is formed at one end of the cup-shaped opening end.
The push switch units 20 and 22 have the same configuration, although they are left and right reversed, and therefore only the push switch unit 20 will be described here.

On both inner walls 103 of the push switch section 20,
A first protrusion 43 is formed so as to protrude from one end to the other end of the inner wall 103 in the standing direction (see FIG. 4). The first protruding portion 43 is the third light guide member 42.
By being loosely fitted between the second projecting portion 44 and the second projecting portion 101, the second projecting portions 44 and 101 regulate the first projecting portion 43, and the pressing switch portion 20 is the third light guide passage. Sliding displacement is possible with respect to 42 in the vertical direction in FIG.

In addition, the first sliding portion is formed by the first protruding portion 43.
The second protrusions 44 and 101 form a second sliding portion. The pressing portion 107 is in contact with the above-described second recess 35a in a state where the pressing switch portion 20 and the third light guide passage 42 are in a sliding state. Then, the push switch portion 20 is slidably displaced upward in the figure, so that the push-in portion 107 pushes the second depression 35a, and the contact portion 27a of the second depression 35a and the switch contact 28a come into contact with or separate from each other. The electric signal is interrupted by.

The design case 12b is for accommodating the above-mentioned functional parts, and is made of ABS resin or the like in a box shape. Further, the design case 12b is formed with a quadrangular tubular portion 108 which is recessed and opened in a quadrangular tubular shape in the direction of the printed circuit board 26, and the opening end 19 of the quadrangular tubular portion 38 is in contact with the pushing portion 39. . That is, the square tubular portion 108
The push-in portion 107 of the push switch portion 20 is sandwiched by the open end 19 of the second hollow portion 35a and the second hollow portion 35a.

Further, the design case 12b facing the light emitting diode 33 is provided with a window portion 54 penetrating the inside and outside of the design case 12b. A resin-made transparent member 52 is provided so as to close the window portion, and the operator can visually recognize the operating state of the air conditioner through the transparent member 52. Also, returning to FIG. 3, the description will be made.
The rotating shaft 11 of the switch element 17 is provided in the design case 12b.
The insertion hole 51 into which is inserted is formed, and the rotary shaft 11 is indicated.

When the operator pushes the display surface 109 of the push switch unit 20 from the lower side to the upper side in FIG. 1, the push type switch device operates as described above. The second protrusions 44 and 101 of the third light guide member 42 slide, and the pressure switch unit 20 moves upward in FIG. Along with this, the push-in portion 107 of the push switch portion 20 causes the push-in portion 107 to move into the second recess 3 of the rubber plate 29b.
5a is pressed to bring the contact portion 27a arranged in the second recess 35a into contact with the switch element 28a. Also,
After this contact, the push switch portion 20 is returned to its original position by the push-in portion 39 of the push switch portion 20 being pushed back by the elastic force of the second recess 35a.

Hereinafter, the method of assembling the above-described panel 10 will be specifically described with reference to FIG. First, printed circuit board 2
6, the light emitting diode 33, the lamps 25 and 32, and the switch element 17 are attached. Next, the reflector 1 is installed so that the light emitting diode 33 is housed in the housing part 47.
The open end of 06 is brought into contact with the upper surface 46 of the printed board 26, and the printed board 26 and the reflector 106 are fixed by a fixing member such as a screw. (The fixing member need not be fixed, and the light emitting diode 33 may be attached after fixing the reflector 106.) Then, the switch elements 28a to 28d attached to the reflector 106 and the first rubber plate 29b. The rubber plate 29b is attached to the upper surface 46 of the reflector 106 so that the two recessed portions 35a and 35b face each other.

Next, the other end of the film-shaped wiring board electrically connected to the switch contacts 28a to 28d is connected to the printed board 26. Here, as described above, they are electrically connected by a detaching means such as a cartridge. Furthermore, between the second protrusions 44 and 101 formed on the third light guide member 42 of the reflector 106 from above,
The first protruding portion 43 of the pressure switch portion 20 is loosely fitted, and the pressing portion 39 of the pressure switch portion 20 and the first recess 35a of the rubber plate 29b are brought into contact with each other (the pressure switch portions 21, 22, 2).
3 is the same).

The design case 12b is replaced with the design case 1
The pressing switch portion 20 is inserted from above so as to fit into the square tubular portion 108 of 2b, and the opening end 19 of the square tubular portion 108 is brought into contact with the upper surface of the pushing portion 39, whereby the panel 10 is pressed.
Is assembled. As described above, the first protrusions 44 and 101 are formed on the third light guide member 42 of the reflector 106,
Also, the first switch is attached to both inner walls 103 of the push switch parts 20 to 23.
By forming the protrusion 43, it is possible to assemble the printed circuit board 26 at the lowermost side in the order of the reflector 106, the rubber plate 29b, the pressure switch portions 20 to 23, and the design case 12b from one direction (or vice versa). Order), it is not necessary to turn the display surface 14b of the design case 12b downward,
The assembling property can be simplified.

Further, conventionally, the same number of sliders as the number of the pressing switch portions were required, and the assembling was complicated, but it is sufficient to dispose the reflector 106 so as to cover the printed circuit board 26, and the assembling is largely performed. The process time can be reduced and the cost can be reduced. Further, since the storage portion 47 for holding and storing the light emitting diode 33 is integrally formed in the reflector 106, the number of parts can be reduced and further cost reduction can be realized.

Further, the light emitted from the lamp 32 causes the first projecting portion 43 of the pressing switch portion 20 and the third light guide member 42.
Even if the light leaks from the gap between the second projecting portion 44 and the second projecting portion 44, since the push-in portion 107 of the pressure switch portion 20 crosses the gap between the pressure switch portion 20 and the design case 12b, the light leaks to the outside. In addition, the appearance of the panel 10 is not spoiled.

Although the first embodiment of the present invention has been described above, the present invention can also be applied to the following embodiments. The second embodiment will be described below. FIG. 5 shows a detailed view of essential parts in the second embodiment. The switch element 18 shown in FIG. 5 is provided with a movable portion 50 that emits an electric signal by moving vertically in the drawing. Then, as shown in FIG. 5, the switch element 18 is provided on the printed circuit board 26 facing the press switch portion 24. In addition, a push-in portion 49 that extends from the push switch portion 20a toward the opening direction of the push switch portion 20 and that faces or contacts the switch element 28e is formed.

When the operator pushes the push switch portion 24 from the upper side to the lower side in the drawing, the push portion 49 of the push switch portion 24 interlocks to push the movable portion 50 to push the switch element 18. You may activate it. In addition, FIG.
As shown in FIG. 5, a fitting portion 200 for fitting the tip of the movable portion 50 of the switch element 18 to the tip of the pushing portion 49 may be provided. Further, in the first embodiment, the second protruding portions 44, 101 are provided. Although the first protrusion 43 is slidable in the vertical direction in FIG. 1, it may be any one that can slide in the vertical direction in FIG.

In the above embodiment, the second protrusion 4
4, 101 and the first protruding portion 43 may be eliminated, and the outer wall of the third light guide member 42 and the inner wall of the pressure switch portion 20 may be brought into direct contact with each other and slid. Further, in the above-described embodiment, the pressing switch section 20 is covered from the outside of the third light guide member 42, but the pressing switch section 20 is allowed to enter the inside of the third light guide member and slidable. good.

[Brief description of drawings]

FIG. 1 is an enlarged view of a main part in a first embodiment of the present invention.

FIG. 2 is a front view of a panel in the first embodiment.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a cross-sectional view taken along the line DD of FIG.

FIG. 5 is a detailed view of essential parts in a second embodiment of the present invention.

FIG. 6 is another example of the second embodiment. .

FIG. 7 is a sectional view of a conventional push-type switch device.

[Explanation of symbols]

 12 Design Case (Box) 16 Reflector (Light Guide Member) 20-23 Pressing Switch Part (Pressing Part) 28 Switch Contact Part (Switching Element) 35 Second Recess (Switching Element) 43 First Protruding Part (First Sliding) Moving part) 44 Second protruding part (second sliding part) 26 Printed circuit board (electrical board) 101 Second protruding part (second sliding part)

Claims (7)

[Claims] 1. An electric board electrically connected to a light source; a light guide member having one end disposed on the electric board and guiding light from the light source to the other end through a light guide passage. A pressing portion that is slidably arranged on the other end side of the light guide member and closes the light guide passage of the light guide member, and a switch element that is electrically interrupted by displacement of the pressing portion, A first sliding portion is provided on one of the inner wall and the outer wall, and a second sliding portion is provided at a position of the pressing portion that faces the first sliding portion. The push-type switch device is characterized in that the first sliding portion is slidably displaced with respect to the light guide member while being restricted by the second sliding portion. 2. The push-type switch device according to claim 1, wherein the push-type switch device is provided in a box body having an opening, and the pressing portion is provided in the opening. Switch device. 3. The light guide member is integrally formed in a box shape having one end opened, and the light guide passage is a second light guide formed from a bottom wall of the box body toward the light source. Aisle,
The push-type device according to claim 1, further comprising a third light guide passage that is in optical communication with the second light guide passage and is formed from the bottom wall toward the outside of the box body. Switch device. 4. The push-type switch device according to claim 3, wherein a switch element is disposed on a bottom wall of the box body facing the pushing portion. 5. The push-type switch device according to claim 3, wherein the light guide member is integrally formed with a holding member that holds and stores other functional components. 6. The pressing portion has a tubular shape with one end open, and the opening end has a pressing portion extending from the opening end in a substantially vertical direction. 4. The push-type switch device described in 4. 7. The first sliding portion has first rows protruding in two rows.
The protruding portion and the second sliding portion are composed of second protruding portions protruding in one row, and the second protruding portion is loosely fitted between the first protruding portions of the two rows to be slidably displaced. The push-type switch device according to claim 1, which is characterized in that.