JPH0316184Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a switch device with a variable resistor in which opening/closing of contacts and operation of a variable resistor are performed by the same operating knob. .

[Prior Art] Conventionally, this type of switch device generally uses a rotary-operated variable resistor, the operating shaft of the variable resistor is configured to be movable in the axial direction, and its tip protrudes from the main body of the variable resistor. It was common to have a push-operated switch device turned on and off using the tip of the operating shaft.

Incidentally, depending on the device, a linearly operated variable resistor may be used in place of a rotary operated variable resistor. This is because the operation knob of a linearly operated variable resistor can take a relatively large movement stroke, so the set value can be easily confirmed by just looking at the position of the operation knob, making it easy to use. Therefore, recently there has been a demand for a switch device with a variable resistor that combines this linearly operated variable resistor and a switch mechanism.

However, even if an attempt is made to adopt the switch mechanism of the above-mentioned rotary-operated variable resistor in order to provide a switch function to this linearly-operated variable resistor, it is difficult to realize it due to the characteristic that the operating knob has a large movement stroke. This is difficult, and the reality is that a switch device with a variable resistor that combines a linearly operated variable resistor and a switch mechanism has not yet been provided. Also, when integrating such a switch device with another switch device,
Conventionally, when trying to perform so-called on-lighting, which is lighting when a switch is turned on, a lamp for on-lighting is provided for each switch, which has the problem of increasing the overall size of the switch.

[Purpose of the invention] The purpose of the invention is to take advantage of the characteristics of the slide-operated variable resistor, which is easy to use, by making it possible to combine the sliding operation of the variable resistor with the pressing operation of the switch. To provide a switch device with a variable resistor which can be provided with a switch function, and which can realize this with a simple structure and be compact while performing on-lighting.

[Summary of the invention] The invention includes an operating knob that is provided through a guide shaft and is movable along the guide shaft and rotatable around the guide shaft, and that is displaceable in a direction perpendicular to the guide shaft. a contact holder having a movable contact that moves toward and away from a fixed contact as the contact is displaced; and an operation that is provided on the operating knob and displaces the contact holder in response to rotation of the operating knob while allowing movement of the operating knob. a linearly operated variable resistor with an operator movable along the guide shaft; an operator provided on the operating knob that engages with the operator of the variable resistor and moves as the operating knob moves; a connecting portion for moving the operating knob, an on display section provided with a light receiving section near the operation knob, and an on display section provided on the contact holder to display light from the light source when the contact holder is displaced to the on position. The structure includes a light guide that guides the light to the light receiving part of the unit, so that the contact can be opened and closed by pressing the operating knob that is moved, and the light from the light source can be guided to the ON display part by displacement of the contact holder. It is characterized by the fact that it is designed to be

[Embodiment] An embodiment in which the present invention is applied to a wiper switch disposed on an instrument panel of a vehicle will be described below with reference to the drawings.

First, in FIGS. 1 and 2, a switch body 1 is constructed by covering a switch case 2 with a switch cover 3, and is disposed on the right side of a steering column (not shown) of a vehicle.
4 to 6 are first to third operators, 7 is an operation knob, and among these, the first to third operators 4 to 6 are
are provided on the right side of the switch case 2 so that they can be pressed to the left in three levels, top and bottom, and from the bottom they are for off operation, low wiper operation, and high wiper operation. Further, the operation knob 7 is provided on the left side of the switch body 1 so that it can be pressed backward and operated up and down, and when pressed, the intermittent wiper operates, and by moving it up and down, the intermittent time can be adjusted. It's getting old.

First, each of the first to third operators 4 to 6 will be described. Since the support structure for the switch case 2 of the first to third operators 4 to 6 is the same,
This will be explained regarding the third operator 6 with reference to the figure. This operator 6 has a mounting rod part 9 and a display surface part 10 extending from the pressing part 8 toward the switch case 2 side.
On the other hand, a support cylinder part 11 is formed on the right side wall of the switch case 2, through which the mounting rod part 9 of the operator 6 can pass. The operator 6 is supported so as to be movable left and right by inserting the mounting rod 9 into the support tube 11 of the switch case 2.
A compression spring 12 provided between the pressing portion 8 and the outer wall of the switch case 2 constantly biases it in the opposite pressing direction, that is, to the right in the figure. Further, an engagement hole 9a is formed near the tip of the mounting rod 9, into which an engagement protrusion 13a protruding from the upper end of a contact holder 13 provided in the switch case 2 so as to be movable from side to side is fitted. are doing. A movable contact (not shown) is disposed on the lower surface of the contact holder 13, and a fixed contact (not shown) is disposed on the insulator plate 2a constituting the bottom of the switch case 2 in correspondence with the movable contact. Therefore, when each of the operators 4 to 6 supported on the switch case 2 is pressed against the elastic force of the compression spring 12 as described above, the corresponding contact holder 13 is moved to the left in the figure. It moves to the state shown in FIG. 3, and the movable contact and the fixed contact are in a predetermined connected state.

Next, a lock structure for holding these operators 4 to 6 in a pressed state will be explained. As shown in FIG. 5, the switch case 2 has each operator 4 to 6
A lock plate 14 is provided on the front side of the mounting rod 9. This is switch case 2
It is housed inside with a predetermined gap G between the top and bottom, and is movable diagonally up and down, and is always moved in one direction, that is, in the direction of arrow A (diagonally downward) by a compression spring 15.
is energized by And lock plate 14
An engaging portion 16 is provided protruding from a portion of the rear surface corresponding to the tip of each mounting rod portion 9, and corresponds to the engaged portion and is an engaging portion of the contact holder 13 that interlocks with the operating elements 4 to 6. The portion 13a can be engaged with this.
That is, for example, when the third operator 6 is pressed,
Along with this, the contact holder 13 moves to the left in FIG.
a presses the engaging portion 16 of the lock plate 14 to move the lock plate 14 in the opposite direction of arrow A in FIG. 5 (diagonally upward). Then, contact holder 1
The engaging protrusion 13a of No. 3 passes to the left side of the engaging portion 16 of the lock plate 14, and at the same time, the lock plate 14 returns in the direction of arrow A due to the elastic force of the compression spring 15, and the lock plate 14 is engaged. The engaging protrusion 13a of the contact holder 13 by the portion 16
is prevented from returning to the right. This allows the third
The operator 6 is held at the pressed position.
When the third operator 6 is in the pressing position, if one of the other operators 4 and 5 is pressed, the engaging protrusion 13a of the contact holder 13 corresponding to that operator will engage the lock plate 14. Since the lock plate 14 moves in the counter-biasing direction, that is, in the counter-arrow A direction by pressing the engagement portion 16, the engagement protrusion corresponding to the third operator 6 is moved. When the lock of the portion 13a is released, the third operator 6 returns to its original position by the elastic force of the compression spring 12. Next, reference numeral 17 denotes a double push prevention plate, which is provided in an opening 14a formed in the lock plate 14 so as to be movable diagonally up and down. The distance is set to be slightly larger than the distance between the engagement protrusion 13a and the engagement protrusion 13a of the third operator 6. Therefore, when both the operators 5 and 6 are pressed at the same time, their respective engaging protrusions 13a and 13a come into contact with the double press prevention plate 17, causing both the operators 5 and 6 to move to the pressed position. This prevents the two circuits corresponding to both operators 5 and 6 from closing at the same time.

Now, the double push prevention plate 17 has two through holes 18.
is formed, which causes switch case 2
Light from an on-lighting lamp 19 (see FIG. 1), which is a light source provided inside, can be transmitted forward. On the other hand, a light guide 20 made of transparent plastic is inserted into each of the operators 4 to 6 so as to be buried within the display surface section 10. The left end of each light guide 20 protrudes from the operators 4 to 6 and is located in front of the double push prevention plate 17. An opening 21 is formed in the display surface 10 of the controls 4 to 6, and a translucent film 22 is pasted to cover the opening 21, thereby serving as an on display section and a nighttime display section. There is. Of the three light guides 20, the second and third operators 5,
6 corresponds to the translucent 1 of the double press prevention plate 17 when each of the operators 5 and 6 is operated to the press position.
V-shaped grooves 20a, 20a are formed at positions facing 8 (see FIG. 3). In addition, a lamp 23 for night illumination is provided in the switch case 2, located to the left of each light guide 20 (see FIG. 4).
This lamp 23 is turned on at the same time when the vehicle's small lamp is turned on at night, and the on-lighting lamp 19 is connected to the second and third operators 5, 6 and the operation knob 7, which will be described in detail later. It lights up when any one of the three is pressed. As a result, when the lamp 23 for night illumination is turned on, the light from the lamp 23 enters each of the three light guides 20 from its tip and illuminates each translucent film 22, making it easy to use. The position of each operator 4 to 6 is made clear to the person. Further, when one of the second and third operators 5 and 6 is pressed, the operator reaches the pressed position and the on-lighting lamp 19 lights up, and the cross groove 20a of the light guide 20 is turned on. is opposed to the transparent light 18 of the double push prevention plate 17, so that the light from the lamp 19 for on-lighting is directed to the V-shaped groove 2.
The light is reflected at 0a and enters the light guide 20, illuminating the translucent film 22. This makes it clear to the user that the contact corresponding to the operator has been turned on. In addition, when the lamp 23 for night illumination is turned on and the translucent film 22 of the operators 4 to 6 is illuminated, if the operators 5 and 6 are pressed, the lamp 23 for night illumination is turned on. Since the light from the lamp 19 for ON lighting is added to the light from the translucent film 2
2 is illuminated even brighter, and there is no way to confirm that the contact is turned on.

Next, the surrounding structure of the operation knob 7 will be explained. In FIGS. 1 to 4, reference numeral 24 denotes a guide shaft installed obliquely in the vertical direction on the switch case 2. As shown in FIG. The operation knob 7 passes through the guide shaft 24 through its support cylinder portion 25, and is supported so as to be movable along the guide shaft 24 and rotatable about the guide shaft 24. 26
is a contact holder disposed inside the switch case 2 so as to be displaceable in a direction perpendicular to the guide shaft 24, and is always held at the left side in FIG. It is biased towards Although not shown, contact holder 2
A movable contact is disposed on the lower surface of the switch case 2, and as the contact holder 26 is displaced, the movable contact comes into contact with and separates from a fixed contact fixed to the insulator plate 2a of the switch case 2. Then, the operation knob 7
has an actuating portion 28 extending toward the contact holder 26 side.
is integrally protruded, and its tip is the contact holder 2.
It is engaged in the engagement groove 26a formed in 6. The engagement groove 26a extends along the guide shaft 24, and therefore freely allows the operation knob 7 to move along the guide shaft 24, so that the contact holder 26 does not displace and moves the guide shaft 24. When the operating knob 7 is rotated about the center, the contact holder 26 is displaced from the state shown in FIG. 1 to the state shown in FIG. 6. Further, as shown in FIG. 5, the side wall portion 26b of the contact holder 26
An engagement protrusion 29 corresponding to an engaged part is protruded from the upper end, and an engagement part 30 is protruded from the lock plate 14 at a position corresponding to the engagement protrusion 29. There is. When the operating knob 7 is pressed and rotated about the guide shaft 24, the contact holder 26 is displaced in the direction of arrow B in FIG. Press to move the lock plate 14 in the opposite direction of arrow A. Then, the engaging protrusion 29 comes to pass through the engaging part 30, and as a result, the lock plate 14
returns in the direction of arrow A due to the elastic force of compression spring 15. As a result, the engaging protrusion 29 of the contact holder 26 is locked by the engaging part 30 of the lock plate 14, and the contact holder 26 is held in the state shown in FIG. held in position.

Reference numeral 31 shown in FIG. 2 is an on display section for the intermittent wiper, which is provided in the switch cover 3 near the operation knob 7, and is located at a predetermined position on the switch cover 3 as shown in FIG. A transparent plastic ride guide 33 is provided in the opening 32 formed in the light guide 33, and a translucent film 34 is attached to the surface of the light guide 33, and a predetermined position of the light guide 33 corresponds to a light receiving part. A light guide pin 35 is fitted downward. On the other hand, a light guide 36 extending vertically is buried and fixed in the side wall portion 26b of the contact holder 26 (see FIG. 6). The light guide 36 has a lower end exposed and faces a through hole 37 formed in the partition wall 2b of the switch case 2, and an upper end exposed upward. Then, press and operate the operation knob 7 to open the contact holder 2.
6 to the right as shown in Fig. 6,
The lower end of the light guide 36 of the contact holder 26 faces the through hole 37 of the partition wall 2b, and the upper end of the light guide 36 is located directly below the light guide pin 35. Although not shown,
The light guide 33 includes the lamp 2 for night illumination.
A light receiving portion facing the lamp 3 is provided in a protruding manner, and when the lamp 23 is turned on, the light guide 33 and the translucent film 34 are illuminated by receiving light from the lamp 23.

Next, 38 shown in FIG. 1 is a linearly operated variable resistor, which is fixed to the switch case 2 with its operator 38a facing upward, and can be operated linearly along the extension direction of the guide shaft 24. It is. and,
The operating knob 7 is provided with a pair of connecting protrusions 3 that protrude from the operating portion 28 and correspond to connecting portions.
9 and 39 are integrally formed, and this connecting protrusion 3
The operator 38a of the variable resistor 38 is positioned between 9 and 39, and the operator 38a and the connecting protrusion 39 are engaged with each other. This allows the operation knob 7 to be moved to the guide shaft 2.
4, the operator 38a of the variable resistor 38 moves accordingly, changing the resistance value of the variable resistor 38, thereby making it possible to adjust the intermittent time of the intermittent wiper.

According to the above configuration, when the operation knob 7 is pressed backward at a desired position, the contact holder 26 is displaced in the direction of the arrow B in FIG.
The engaging protrusion 29 of the contact holder 26 presses the engaging part 30 of the lock plate 14 to lock the lock plate 1.
4 in the opposite direction of arrow A, the engaging protrusion 29 comes to engage with the engaging part 30, and the operating knob 7 is held in the pressed position (see FIG. 6). As a result, the movable contact of the contact holder 26 and the fixed contact of the insulator plate 2a are brought into a predetermined connection state, the intermittent wiper circuit is activated, and the ON lighting lamp 19 is turned on. Also,
At the same time, since the contact holder 26 comes to face the through hole 37 of the partition wall 2b of the switch case 2, the light from the lamp 19 passes through the through hole 37 and is transferred from the light guide 36 of the contact holder 26 to the light guide pin. 35 irradiated. As a result, the light guide pin 35 illuminates the translucent film 34 of the ON display section 31, allowing the user to confirm that the contact has been turned on. Note that when the second or third operator 5 or 6 is pressed, the on-lighting lamp 19 lights up, but if the operation knob 7 is not in the pressed position, the light guide 36 of the contact holder 26 The exposed lower end of the switch case 2
Even if the lamp 19 is turned on, the light from the lamp 19 does not enter the light guide 36, and the operating knob 7
The on display section 31 of is not illuminated. Next, in this state, when the operating knob 7 is moved diagonally up and down along the guide shaft 24, the connecting protrusion 3 of the operating knob 7
9 and 39 are engaged to sandwich the operator 38a of the variable resistor 38, the operator 38a moves in the same direction, the resistance value of the variable resistor 38 changes, and the intermittent time of the intermittent wiper changes. do. At this time, the operating portion 28 of the operation knob 7 is inserted into the engagement groove 26a of the contact holder 26, but since the engagement groove 26a extends along the direction of extension of the guide shaft 24, the operation knob 7 is allowed to move freely;
The contact holder 26 is not displaced and the connection state of the contacts does not change. Note that even if the operating knob 7 is first moved to a desired position and then the operating knob 7 is pressed, the variable resistor 38 and the contact holder 26 can of course be operated independently.

As described above, according to this embodiment, the resistance value of the linearly operated variable resistor 38 can be changed by moving the operating knob 7 along the guide shaft 24, and by pressing the operating knob 7. By doing so, the switch can be opened and closed by displacing the contact holder 26 independently of the variable resistor 39. Moreover, a light guide 36 is provided on this using the contact holder 26, and the contact holder 26 is
When the light guide 36 is displaced, the light guide 36 receives the light from the lamp 19 and guides the light to the light guide pin 35 of the ON display section 31. The operation knob 7 side can also be illuminated using the illumination lamp 19. With this, the three switches can be turned on by a single lamp 19, and the number of lamps can be reduced, thereby making it possible to downsize the entire device.

In the above embodiment, one lamp 19 is used to turn on the three switches.
The present invention is not limited to this, and a dedicated lamp for turning on the operating knob 7 may be provided, and even if the lamp cannot be placed near the on display section due to space constraints, the displacement of the contact holder may be avoided. The light from the lamp can be guided to the ON display according to the
The degree of freedom in design is increased and the overall size can be reduced.

[Effects of the invention] As described above, the present invention has the characteristic of a linearly operated variable resistor that it is easy to use because the linearly operated variable resistor and the contact holder can be operated independently. The switch can be opened and closed using the same operation knob while making full use of the above characteristics, and the switch can be made compact as a whole while providing an on display, which is an excellent practical effect.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG.
Figure 2 is a cross-sectional view along the line in the figure, Figure 2 is a front view of the whole, Figure 3 is a cross-sectional view with the third operator pressed, and Figure 4 is a front view with the switch cover removed. , FIG. 5 is a partially cutaway front view of the main parts, and FIG. 6 is a cross-sectional view showing the operating knob in a pressed state. In the drawing, 7 is an operation knob, 14 is a lock plate, 19 is a lamp for ON illumination (light source), 24 is a guide shaft, 26 is a contact holder, 31 is an ON indicator, 36 is a light guide, and 38 is a variable resistor. ,3
8a is an operator, and 39 is a connecting protrusion (connecting portion).

Claims (1)

[Scope of utility model registration request] an operating knob that is provided through the guide shaft and is movable along the guide shaft and rotatable around the guide shaft; and an operating knob that is displaceable in a direction perpendicular to the guide shaft and that moves relative to the fixed contact as the knob is displaced. a contact holder having movable contacts that move toward and away from each other; an actuating section that is provided on the operating knob and displaces the contact holder according to rotation of the operating knob while allowing movement of the operating knob; a linearly operated variable resistor that is movable along the operating knob; a connecting portion that is provided on the operating knob and engages with the operating element of the variable resistor to move the operating element as the operating knob moves; an on display section provided with a light receiving section near the knob; and a light guide provided on the contact holder that guides light from a light source to the light receiving section of the on display section when the contact holder is displaced to the on position. A switch device equipped with a variable resistor.