JP2010020957A - Switch device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a switch device that facilitates manufacturing and assembling, and ensures reliable operation regarding the switch device, which is mainly used in operation of various electronic equipment such as air-conditioning or audio equipment or the like of a car. <P>SOLUTION: Outside of a retaining part 15A of an operation body 15 is wound round with a coil spring 16 in order to have the retaining part 15A crimped with a mounting shaft 12A, and a recess 15C is arranged in the inner circumference of the retaining part 15A and a protrusion 12D arranged on the outer circumference of the mounting shaft 12A, respectively, then they are engaged with each other so that the operating body 15 is attached to the mounting shaft 12A. By this arrangement, crimping state of the retaining part 15A with the mounting shaft 12A becomes nearly constant and positive, and rattling and pulling out upward can be prevented, thereby the switch device 30 can be obtained in which the operation body 15 can be attached easily to the operating body 12 of the operation body 15, and the switch device 30 in which the sure operation is enabled can be obtained. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a switch device mainly used for operation of various electronic devices such as an air conditioner and an acoustic device of an automobile.

  In recent years, a switch device such as a steering switch in which an operating body can swing in multiple directions is disposed in the vicinity of a steering wheel in an automobile, and an electronic device such as an audio device or an air conditioner is operated by operating the operating body of the switch device. The operation is widely performed, and there is a demand for one that can be easily assembled and can be reliably operated.

  Such a conventional switch device will be described with reference to FIGS.

  FIG. 7 is a cross-sectional view of a conventional switch device, in which 1 is a substantially box-shaped insulating resin cover, 2 is an insulating resin operating body, and 3 is an insulating body disposed above the operating body 2. An upper case 4 made of resin is a lower case made of insulating resin disposed below the operating body 2, and a substantially cylindrical mounting shaft 2 </ b> A provided on the upper side of the operating body 2 is arranged at a substantially center of the upper surface of the cover 1. The substantially spherical central portion 2B of the operating body 2 is supported by the support portion 3A of the upper case 3 and the support portion 4A of the lower case 4 so that the outer periphery can swing.

  Reference numeral 5 denotes an operating body made of an insulating resin having a substantially disk shape, and a substantially hollow cylindrical holding portion 5A on the lower surface of the operating body 5 is mounted on the mounting shaft 2A on the upper side of the operating body 2 in a press-fitted state. Protrudes upward from the opening 1 </ b> A of the cover 1.

  Reference numeral 6 denotes a wiring board on which a plurality of wiring patterns (not shown) are formed on the upper and lower surfaces, 7 denotes a push switch, and the wiring board 6 is placed on the upper surface of the lower case 4 and a plurality of push switches 7 Are mounted at four locations on the upper surface of the wiring board 6 in the front, rear, left and right, and the pressing portions 7A of the push switch 7 are in contact with the pressing portions 2C extending from the central portion 2B of the operating body 2 so as to face each other.

  Furthermore, a substantially cylindrical pin 8 is housed in a housing hole 2D provided in the lower part of the operating body 2 so as to be movable up and down, and a moderation spring 9 for biasing the pin 8 downward is slightly bent. The switch device 10 is configured such that the tip of the pin 8 is elastically brought into contact with the unevenness of the moderation portion 4B of the lower case 4.

  Then, as shown in the plan view of FIG. 6, the switch device 10 configured as described above is attached to the spoke portion 11A of the steering 11 with the operation surface facing forward, and a plurality of push switches 7 are connected to connectors and lead wires. It is electrically connected to an electronic circuit (not shown) of the automobile through (not shown) or the like.

  In the above configuration, when the operating body 5 is swung to the left, for example, with the thumb while grasping the steering wheel 11B, the operating body 2 is moved to the central portion 2A via the operating body 5 as shown in the sectional view of FIG. The pin 8 urged by the moderation spring 9 at the lower end of the operating body 2 moves while elastically contacting the moderation portion 4B, and a sense of moderation occurs.

  As the operating body 2 swings in the left direction, the left pressing portion 2C presses the pressing portion 7A of the opposing push switch 7, and the push switch 7 is electrically connected and separated. A signal is transmitted to the electronic circuit of the automobile via a connector, a lead wire, etc., for example, the temperature setting of the air conditioner is lowered.

  Similarly, when the operating body 5 is swung to the right or back and forth, the push switch 7 is electrically connected / disconnected via the corresponding pressing portion 2C according to the operation, and the temperature setting of the air conditioner is performed. It is configured to increase or decrease the audio volume.

  In addition, since the holding part 5A is press-fitted into the mounting shaft 2A of the operating body 2 and is attached to the operating body 2, the operating body 5 is attached to the operating body 2 and the inside of the holding part 5A of the operating body 5 made of insulating resin and the mounting shaft 2A. If the gap between the holding portion 5A and the outside of the mounting shaft 2A is large due to the dimensional finish on the outer side of the lens, rattling occurs between the operating body 5 and the operating body 2 and the operation becomes uncertain. It was necessary to manage these dimensions so as to achieve an appropriate press-fit state, or to fix them with an adhesive or the like.

As prior art document information related to the invention of this application, for example, Patent Document 1 is known.
JP 2007-12286 A

  However, in the conventional switch device 10 described above, in order to prevent the operation body 5 and the operating body 2 from rattling and to perform a reliable tilting operation of the switch device, the operation body 5 and the mounting shaft 2A attached thereto are provided. Because it is necessary to fix the dimensions of these parts and to fix them with an adhesive, etc., there is a problem that it takes time and labor to assemble components such as operating bodies and actuating bodies and to assemble switch devices, which tends to be expensive. .

  The present invention solves such a conventional problem, and an object of the present invention is to provide a switch device that can be easily manufactured and assembled and can be reliably operated.

  In order to achieve the above object, the present invention has the following configuration.

  According to the first aspect of the present invention, the outer side of the holding portion of the operating body is wound with a coil spring so that the holding portion is pressed against the mounting shaft, and the inner periphery of the holding portion and the outer periphery of the mounting shaft are recessed or protruded. Each switch is provided and engaged with each other, and the operating body is mounted on the mounting shaft to configure the switch device. The operating body, which is wound by attaching a coil spring to the holding section, is press-fitted into the mounting shaft of the operating body. In addition, by engaging the concave portions or the convex portions provided on the inner periphery of the holding portion and the outer periphery of the mounting shaft with each other, a sound and a tactile sensation are generated when the concave portion and the convex portion are engaged, and the mounting shaft is moved inside the holding portion. It can be perceived that it has been inserted up to a predetermined position, and the pressure contact state between the holding part and the mounting shaft is almost constant and reliable, and the operating body is attached to the operating body to prevent rattling and upward pulling. Can be obtained, and a switch device capable of reliable operation can be obtained. Takes action that.

  According to a second aspect of the present invention, in the switch device according to the first aspect, a plurality of slits extending in the vertical direction are provided in the holding portion, and ribs provided outside the mounting shaft are engaged with the slits. Yes, the holding part is pressed against the mounting shaft by the coil spring, and the rib on the outer side of the mounting shaft is engaged with the slit of the holding part, so that the rotating direction of the operating body is not rattled against the mounting shaft, making it more stable. Reliable operation is possible.

  As described above, according to the present invention, it is possible to obtain an advantageous effect that a switch device that can be easily manufactured and assembled and can be reliably operated can be realized.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  In addition, the same code | symbol is attached | subjected to the part of the structure same as the structure demonstrated in the term of background art, and detailed description is simplified.

(Embodiment)
1 is a cross-sectional view of a switch device according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of the same, FIG. 3 is a perspective view of a main part, and FIG. 4 is a cross-sectional view of the main part. Covers made of insulating resin such as polycarbonate (hereinafter referred to as PC) and acrylonitrile butadiene styrene (hereinafter referred to as ABS), 12 is polybutylene terephthalate (hereinafter referred to as PBT) and nylon (hereinafter referred to as PBT). A substantially cylindrical mounting shaft 12A provided on the upper portion of the actuating body 12 is formed at the center of the display portion 1B that is recessed in a substantially mortar shape on the upper surface of the cover 1. It protrudes from the provided opening 1A.

  Reference numeral 3 denotes an upper case made of an insulating resin such as ABS or polyoxymethylene (hereinafter referred to as POM) disposed above the operating body 12, and 4 denotes a POM or PA disposed below the operating body 12. The substantially spherical central portion 12B of the actuating body 12 is formed in the substantially curved support portion 3A formed in the approximate center of the upper case 3 and the approximate center of the lower case 4. The upper and lower outer peripheries are swingably supported by the curved support portions 4A.

  Reference numeral 15 denotes an operation body made of an insulating resin such as ABS or POM, and an upper portion is provided with a substantially disk-shaped operation portion 15J having a diameter larger than that of the opening 1A, and a hollow, substantially cylindrical shape is formed on the lower surface of the operation portion 15J. A shaped holding portion 15A is provided.

  Furthermore, slits 15B extending in the vertical direction are formed at four locations at approximately equal intervals in the circumferential direction of the holding portion 15A, and a substantially groove-shaped recess 15C is formed on the inner periphery of the pressure contact portion 15F sandwiched between the slits 15B. Each is formed.

  Then, a plurality of ribs 12C extending in the vertical direction and projecting outward are formed on the outer side of the mounting shaft 12A, and a belt-like convex portion 12D is formed on the outer periphery between the ribs 12C, as shown in FIG. The convex portion 12D enters and engages with the concave portion 15C of the holding portion 15A, and the ribs 12C engage with the slits 15B of the holding portion 15A as shown in FIG.

  Further, 16 is a coil spring made of metal wire, between the flange portion 15D protruding from the outer periphery above the upper end of the slit 15B of the holding portion 15A in a substantially ring shape and the protruding portion 15E formed at the lower end of the holding portion 15A. The operating body 15 is mounted on the mounting shaft 12 </ b> A of the actuating body 12 by arranging the coil spring 16, winding the holding portion 15 </ b> A, pressing the inner side of the pressure contact portion 15 </ b> F to the outer side of the mounting shaft 12 </ b> A.

  Here, the diameter of the flange portion 15D is made smaller than the opening portion 1A of the cover 1 and larger than the outer diameter of the coil spring 16 wound around the holding portion 15A. The upper part is covered with 15D so that it cannot be seen through the opening 1A in appearance.

  Furthermore, 6 is a wiring board such as paper phenolic resin or glass-filled epoxy resin, 7 is a push switch as a switch contact, and the wiring board 6 is placed on the upper surface of the lower case 4 and a plurality of push switches 7 are, for example, front and rear Mounted at four locations on the left and right sides, the pressing portions 7A of the push switches 7 are in contact with the pressing portions 12E extending from the central portion 12A of the operating body 12 so as to face each other.

  The storage hole 12F provided at the lower end of the operating body 12 stores a substantially cylindrical pin 8 and a coiled moderation spring 9 that biases the pin 8 downward in a slightly bent state. The switch device 30 is configured such that the tip elastically contacts the unevenness of the moderation portion 4B of the lower case 4.

  Further, when the operating body 15 is mounted on the operating body 12 in such a switch device 30, the operating body 12 swingably supported by the upper case 3 and the lower case 4 and the push switch 7 are mounted in the cover 1. The holding portion 15A of the operating body 15 is mounted on the mounting shaft 12A of the operating body 12 protruding from the opening 1A of the cover 1 from above in a switch unit state in which the wiring board 6 and the like are incorporated.

  That is, first, the coil spring 16 is press-fitted from the inclined portion 15G outside the lower end of the holding portion 15A while expanding the diameter of the coil spring 16, and is disposed between the collar portion 15D and the projection portion 15E and wound around the pressure contact portion 15F. Let it turn.

  Next, when the holding portion 15A around which the coil spring 16 is wound is press-fitted so as to cover the tip of the mounting shaft 12A, the pressure contact portion 15F is expanded by the inclined portion 15H inside the lower end of the holding portion 15A and the mounting shaft 12A is held. Enter the part 15A.

  Further, when the operating body 15 is pushed downward, the rib 12C of the mounting shaft 12A enters the slits 15B of the holding portion 15A while engaging, and the convex portion 12D of the mounting shaft 12A engages with the concave portion 15C of the holding portion 15A. At the same time, the tip of the mounting shaft 12A comes into contact with the upper end surface inside the holding portion 15A.

  At this time, the pressing portion 15F of the holding portion 15A in which the recess 15C is formed is urged inward by the coil spring 16, so that the convex portion 12D of the mounting shaft 12A engages with the concave portion 15C of the holding portion 15A. When the convex portion 12D enters the concave portion 15C and engages with the convex portion 12D from the state where there is a gap corresponding to the height of the convex portion 12D between the convex portion 12D and the inner surface of the pressure contacting portion 15F, the inner surface of the pressure contacting portion 15F is attached. A sound or an impact is generated in contact with the outer surface of the shaft 12A, and it can be perceived that the holding portion 15A is securely attached to the mounting shaft 12A at a predetermined position by the tactile sensation of the sound or impact.

  That is, when the operating body 15 in which the coil spring 16 is wound around the holding portion 15A is mounted on the mounting shaft 12A of the operating body 12, the predetermined insertion due to the sound or impact when the convex portion 12D is engaged with the concave portion 15C. It turns out that it was able to mount | wear to a position, and damage to the operation body 15 or the action body 12 by these insufficient insertion or excessive pushing-in can be prevented.

  Further, when the operating body 15 is mounted on the mounting shaft 12A by winding the coil spring 16 between the flange portion 15D and the protrusion portion 15E of the holding portion 15A, the coil spring 16 is connected to the flange portion 15D and the protrusion portion. 15E restricts the movement in the vertical direction and makes it difficult to come off, and even after the operating body 15 is mounted, the coil spring 16 is prevented from coming off from the holding portion 15A due to vibrations or shocks that occur during driving of the vehicle, and the operation is ensured. The body 15 can be held on the mounting shaft 12A.

  Then, as shown in the plan view of FIG. 6, the switch device 30 configured in this way is attached to the spoke portion 11A of the steering wheel 11 with the operation surface facing forward, and a plurality of push switches 7 are connected to connectors and lead wires. It is electrically connected to an electronic circuit (not shown) of the automobile through (not shown) or the like.

  In the above configuration, when the operating portion 15J of the operating body 15 is swung to the left, for example, with the thumb while grasping the steering wheel 11B, as shown in the cross-sectional view of FIG. 12 swings to the left about the central portion 12B, and the pin 8 biased by the moderation spring 9 at the lower end of the operating body 12 moves while elastically contacting the moderation portion 4B, thereby generating a sense of moderation.

  Then, as the operating body 12 swings in the left direction, the left pressing portion 12E presses the pressing portion 7A of the opposing push switch 7, and the push switch 7 is electrically connected and separated. A signal is transmitted to the electronic circuit of the automobile via a connector, a lead wire, etc., for example, the temperature setting of the air conditioner is lowered.

  Similarly, when the operation portion 15J is swung in the right direction or the front-rear direction, the corresponding push switch 7 is electrically connected / disconnected via the operating body 12 according to the operation of the operating body 15, and the air conditioner It is configured to increase the temperature setting and increase / decrease the audio volume.

  When the operating portion 15J is swung with a thumb or the like, the operating body 15 is pressed against the mounting shaft 12A by the coil spring 16 wound around the holding portion 15A, and the mounting shaft 12A. Since the convex portion 12D is engaged with the concave portion 15C of the holding portion 15A, there is no variation in the height from the upper surface of the cover 1 to the operating portion 15J of the operating body 15, Since it does not easily come off, there is no problem even if the operating body 15 is swung with a slightly strong force against the moderation load caused by the elastic contact movement between the pin 8 and the moderation portion 4B, or the operating body 15 is pulled by a load or the like. Operation is possible.

  As described above, according to the present embodiment, the outside of the holding portion 15A of the operating body 15 is wound around the coil spring 16 so that the holding portion 15A is pressed against the mounting shaft 12A, and the recess 15C is formed on the inner periphery of the holding portion 15A. An operation in which the convex portions 12D are formed on the outer periphery of the mounting shaft 12A, are engaged with each other, and the operating body 15 is attached to the mounting shaft 12A, whereby the coil spring 16 is attached to the holding portion 15A and wound. When the body 15 is press-fitted into the mounting shaft 12A of the operating body 12, and the convex portion 12D on the outer periphery of the mounting shaft 12A is engaged with the concave portion 15C on the inner periphery of the holding portion 15A, sound and tactile sensation are generated, and the mounting shaft 12D Can be perceived as having been inserted to a predetermined position in the holding portion 15A, and the press-contact state between the holding portion 15A and the mounting shaft 12A is almost constant and reliable, and prevents backlash and upward pulling. Production of body 15 Easily mounted to the body 12, it is capable of reliable operation to obtain the switching device 30 as possible.

  Further, the holding portion 15A is provided with a plurality of slits 15B extending in the vertical direction, and the ribs 12C provided on the outside of the attachment shaft 12A are engaged with the slits 15B, whereby the holding portion 15A is engaged with the ribs 12C of the attachment shaft 12A. Thus, the rotation direction of the operation body 15 can be prevented from being shaken in the rotation direction of the operation shaft 15 with respect to the mounting shaft 12A, and further stable and reliable operation can be performed.

  In the above description, the concave portion 15C is provided on the inner periphery of the holding portion 15A and the convex portion 12D is provided on the outer periphery of the mounting shaft 12A, and these are engaged with each other. The present invention can also be implemented by providing a convex portion on the circumference and a concave portion on the outer periphery of the mounting shaft 12A and engaging them with each other.

  In the above description, the holding portion 15A is provided with four slits 15B at substantially equal intervals, and the ribs 12C that are engaged with the slits 15B are formed at four locations outside the mounting shaft 12A. The slit of the holding part and the rib of the mounting shaft may be provided at three or less or five or more according to the diameter of the holding part and the diameter of the mounting shaft, and these may be engaged.

  Further, in the above description, the configuration using the single push switch 7 as the switch contact has been described. However, a fixed contact is formed on the upper surface of the wiring board 6 with carbon or the like, and a movable contact is formed on the lower surface above this. The present invention can be implemented using various switch contacts such as those using a flexible rubber sheet having a substantially dome shape, or those having a movable contact made of a conductive metal thin plate in a substantially dome shape. is there.

  In the above description, the swing operation type switch device 30 for swinging the operating body 15 has been described. However, the switch contact is electrically connected / disconnected via the operating body by rotating or pressing the operating body. The present invention can be implemented even when applied to a rotary operation type switch device or a pressing operation type switch device.

  The switch device according to the present invention is easy to manufacture and assemble, can realize a reliable operation, and is useful mainly for operation of various electronic devices such as an air conditioner and an acoustic device of an automobile.

Sectional drawing of the switch apparatus by one embodiment of this invention Exploded perspective view Perspective view of the main part Cross section of the main part Cross section during the same operation Steering plan view Sectional view of a conventional switch device Sectional view

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cover 1A Opening part 1B Display part 3 Upper case 4 Lower case 4B Moderation part 6 Wiring board 7 Push switch 7A Push part 8 Pin 9 Moderation spring 11 Steering 11A Spoke part 11B Steering wheel 12 Actuator 12A Mounting shaft 12B Center part 12C Rib 12D convex part 12E pressing part 12F accommodation hole part 15 operation body 15A holding part 15B slit part 15C concave part 15D collar part 15E protrusion part 15F pressure contact part 15G, 15H inclined part 15J operation part 16 coil spring 30 switch device

Claims (2)

An operating body provided with a substantially hollow cylindrical holding portion on the lower surface, an operating body mounted with the holding portion of the operating body outside an attachment shaft provided at the upper portion, and the operating body by operating the operating body A switch contact that is electrically connected to and separated from each other, and the outside of the holding portion is wound by a coil spring to press the holding portion against the mounting shaft, and the inner circumference of the holding portion and the mounting shaft A switch device in which recesses or protrusions are provided on the outer periphery and engaged with each other. The switch device according to claim 1, wherein a plurality of slits extending in the vertical direction are formed in the holding portion, and ribs formed outside the mounting shaft are engaged with the slits.

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