JP5444075B2 - Switch device - Google Patents

Description

  The present invention relates to a switch device such as an engine start / stop switch installed on an instrument panel of a vehicle.

  Some recent vehicles include a smart ignition system that enables an engine to be started by an ID signal wirelessly transmitted from a portable device. In this smart ignition system, when the engine start / stop switch provided on the instrument panel in the passenger compartment is operated, a request signal is transmitted from the vehicle authentication device to the portable device, and the portable device that has received this request signal. Transmits its own ID signal to the vehicle authentication device. Then, the vehicle authentication device collates the ID code included in the received ID signal with the ID code stored in advance, and if they match, the engine can be started as authentication OK, and the engine start / stop is started. The engine is started by operating the switch.

  In such a smart ignition system, communication with a vehicle authentication device is possible without requiring a power source such as a battery in the portable device as an auxiliary communication means when the battery of the portable device is exhausted and communication becomes impossible. Some have a transponder communication function. In this transponder communication function, when a portable device receives an activation radio wave transmitted from a coil antenna provided in a vehicle authentication device, an electromotive force is generated by a coil portion in the transponder of the portable device, and the power is used to authenticate the vehicle. By transmitting an ID signal to the device, communication between the vehicle authentication device and the portable device is enabled.

  By the way, when using the transponder communication function, it is necessary to operate the engine start / stop switch with the portable device close to the coil antenna of the vehicle. Therefore, the coil antenna is arranged in the vicinity of the engine start / stop switch (see, for example, Patent Document 1).

JP 2004-314806 A

  However, in the configuration proposed in Patent Document 1, the coil antenna 113 is disposed radially outward of the operation knob 105 of the switch device (engine start / stop switch) 101 as shown in FIG. There was a problem that the outer shape of 101 became large.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a switch device that can be miniaturized.

  In order to achieve the above object, the invention described in claim 1 activates a holder, an operation knob held by the holder so as to be able to advance and retreat, a detection means for detecting operation of the operation knob, and an external portable device. In a switching device comprising a coil antenna for transmitting a startup radio wave, an antenna holder for holding the coil antenna, and a wiring part for connecting the coil antenna to an external electric circuit, the antenna holder and the antenna holder And a movable connecting means for maintaining an electrical connection between the coil antenna that moves forward and backward integrally with the operation knob and the wiring portion provided on the holder side. Is provided.

  A second aspect of the invention is characterized in that, in the first aspect of the invention, the movable connecting means is constituted by a conductive spring disposed between the coil antenna and the wiring portion.

  According to a third aspect of the present invention, in the second aspect of the present invention, a part of the wiring portion is constituted by a substrate disposed along the advancing / retreating direction of the operation knob, and one end of the spring is provided on the substrate. A conductive spring holding portion for receiving the projection is provided.

  A fourth aspect of the present invention is the antenna fixed contact according to the first aspect, wherein the movable connecting means is disposed on a substrate constituting a part of the wiring portion along the advancing / retreating direction of the operation knob. And an antenna movable contact that is provided on the antenna holder and is in sliding contact with the antenna fixed contact.

  According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the holder includes a holding cylinder portion that holds the operation knob so that the operation knob can be moved forward and backward. The wiring portion is arranged in the above.

  According to the first aspect of the present invention, since the antenna holder and the coil antenna held by the antenna holder are arranged on the operation knob, the switch device is compared with the conventional arrangement in which the coil antenna is arranged radially outward of the operation knob. Can be miniaturized. Further, since the coil antenna is covered with the operation knob and cannot be seen from the outside, the appearance of the switch device is improved.

  According to the second aspect of the present invention, even when the operation knob is moved forward and backward by the switch operation, the spring expands and contracts, the electrical connection between the coil antenna and the wiring portion is maintained, and the switch device is stabilized. Operation becomes possible and the occurrence of failures such as disconnection is prevented. Further, since there is no sliding portion in the movable connecting means constituted by the spring, there is no problem of damage or noise due to wear, and the durability of the movable connecting means is enhanced.

  According to the third aspect of the present invention, since the conductive spring holding portion that receives one end of the spring protrudes from the substrate, the spring is prevented from falling off with a simple structure, and the coil antenna and the wiring portion are stably electrically connected. Connection is possible.

  According to the fourth aspect of the present invention, even when the operation knob is moved forward and backward by the switch operation, the antenna movable contact slides on the antenna fixed contact so that the electrical connection between the coil antenna and the wiring portion is achieved. Since a stable connection is maintained, a stable operation of the switch device is possible and a failure such as disconnection is prevented.

  According to the fifth aspect of the present invention, since the wiring portion is arranged outside the holding cylinder portion of the holder, the portion where the operation knob advances and retreats and the portion where the arrangement portion is arranged are partitioned by the holding cylinder portion. The operation knob that advances and retreats along the part does not contact the wiring part, the wiring part is prevented from being damaged and its durability is enhanced, and the wiring part is easily arranged.

It is a disassembled perspective view of the switch apparatus which concerns on Embodiment 1 of this invention. It is a sectional side view of the switch apparatus concerning Embodiment 1 of this invention. It is a front view which removes and shows the operation part of the cap of the switch apparatus which concerns on Embodiment 1 of this invention, and an operation knob. It is a sectional side view of the switch apparatus concerning Embodiment 2 of this invention. It is a fracture | rupture side view of the conventional switch apparatus.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

<Embodiment 1>
1 is an exploded perspective view of a switch device according to Embodiment 1 of the present invention, FIG. 2 is a side sectional view of the switch device, and FIG. 3 is a front view showing the switch device with a cap and an operation knob operation part removed. It is.

  A switch device 1 according to the present embodiment is an engine start / stop switch installed on an instrument panel of a vehicle equipped with a smart ignition system, and is a substantially cylindrical holder 2 with a part of the upper surface cut away. And an operation knob 5, an antenna holder 6, a printed circuit board 7, a rubber sheet 8, and a printed circuit board 9 are incorporated in a case 4 formed by a cover 3 that covers the upper surface opening. Note that the holder 2 and the cover 3, the operation knob 5, the antenna holder 6, and the printed circuit boards 7 and 9 constituting the case 4 are integrally formed of non-conductive resin. In the following description, the left side of FIG. 2 is the front side, the right side is the rear side, and the left-right direction is the axial direction.

  The holder 2 is composed of a cylindrical portion 2A and a semi-cylindrical portion 2B whose upper surface is open, and flat rectangular plugs 2a are formed at a total of four locations on the top and bottom and the left and right of the outer periphery of the cylindrical portion 2A. Engaging protrusions 2b are formed on the insertion portion 2a. A semi-cylindrical holding cylinder portion 2c is formed concentrically inside the semi-cylindrical portion 2B, and a total of three locations (two locations in FIG. Only a guide groove 2d is formed along the longitudinal direction (axial direction).

  Further, a rectangular frame-shaped substrate mounting portion 2e is integrally formed at the upper surface opening of the semi-cylindrical portion 2B of the holder 2, and bosses 2f are erected on the left and right sides thereof. As shown in FIG. 2, the printed board 7 is horizontally attached to the board attaching portion 2e. As shown in FIG. 1, insertion holes 7a and screw insertion holes 7b are formed on the left and right sides of the printed board 7, respectively. An intermediate male connector 10 is attached to the left and right of the lower surface of the rear end. A pair of left and right conductive spring holding portions 11 are inserted into the two insertion holes 7a of the printed board 7 from above and fixed.

  Thus, the printed circuit board 7 is screwed into the boss 2f formed in the semi-cylindrical portion 2B of the holder 2 with a total of two screws 12 respectively inserted from above into the two screw insertion holes 7b formed therein. As a result, it is horizontally attached to the substrate attachment portion 2e of the holder 2. As shown in FIG. 1, rectangular engagement holes 2 g are formed at two opposing positions on the rear end of the semi-cylindrical portion 2 </ b> B of the holder 2.

  As shown in FIG. 1, the cover 3 includes a semi-cylindrical portion 3A and a lid portion 3B that integrally extends vertically downward from the rear end thereof, and rectangular engagement holes on the left and right of the front end side of the semi-cylindrical portion 3A. 3a is formed, and engaging protrusions 3b (only one is shown in FIG. 1) are provided on the left and right sides of the lid 3B. Then, when the cover 3 is covered from above the holder 2, two engagement protrusions (not shown) formed on the holder 2 side are engaged with engagement holes 3a formed on the left and right of the semi-cylindrical portion 3A. The engagement protrusions 3b formed on the left and right sides of the lid portion 3B engage with the engagement holes 2g formed on the left and right sides of the semi-cylindrical portion 2B of the holder 2 from the inside. The case 4 is configured by being attached.

  The operation knob 5 is composed of a semi-cylindrical slide portion 5A having a flat upper surface and a substantially disc-shaped operation portion 5B covering the front end opening thereof. Guide rails 5a are integrally projected along the longitudinal direction (axial direction) at a total of three locations (only one location is shown in FIG. 1). Engaging protrusions 5b are integrally projected at three locations (only one location is shown in FIG. 1) on the left and right and lower portions of the outer periphery of the front end portion of the slide portion 5A.

  Further, an antenna housing portion 5c as a semi-ring-shaped recess is formed on the inner periphery of the front end portion of the slide portion 5A, and a rectangular frame-shaped lens mounting portion 5d is formed. Further, cylindrical switch operation portions 5e are horizontally formed on the left and right of the rear end portion of the slide portion 5A.

  The operation portion 5B is formed with a semi-cylindrical fitting portion 5f integrally extending rearward, and a rectangular shape is formed on the left and right sides and the lower portion (only one is shown in FIG. 1) of the fitting portion 5f. Engagement holes 5g are provided respectively. In addition, an elongated opening window 5h that is long in the lateral direction is formed at the lower portion of the operation portion 5B.

  Thus, the antenna holder 6 is fitted and held in the antenna housing portion 5c formed on the inner periphery of the front end portion of the slide portion 5A of the operation knob 5. Here, the antenna holder 6 is composed of a ring-shaped hold portion 6A and a terminal holding portion 6B erected on the upper portion of the hold portion 6A. In the groove 6a formed on the outer periphery of the hold portion 6A, The antenna antenna is wound to form the coil antenna 13. In addition, on the terminal holding portion 6B of the antenna holder 6, two left and right antenna connecting portions 14 for winding and connecting the antenna wire and two left and right connecting terminals 15 connected to the antenna wire project horizontally toward the rear. It is installed.

  The antenna holder 6 has a holding portion 6A fitted and held in an antenna housing portion 5c formed on the inner periphery of the front end of the slide portion 5A of the operation knob 5. As shown in FIG. 2, the terminal holding portion 6B and the printed board 9 are fitted. The connection terminal 15 is inserted into the two left and right conductive springs 16 that are contracted between the two left and right spring holding portions 11 that are erected on the left and right sides, and the two are electrically connected. This constitutes an electrically movable connecting means. An indicator illumination lens 17 is inserted and housed in the lens mounting portion 5d formed inside the front end of the slide portion 5A of the operation knob 5.

  Thus, the operation portion 5B of the operation knob 5 has the fitting portion 5f fitted to the outer periphery of the front end of the slide portion 5A, and the slide portion 5A is inserted into the three engagement holes 5g formed in the fitting portion 5f. The engagement protrusions 5b projecting from three locations on the outer periphery of the front end are engaged to be attached to the outer periphery of the front end of the slide portion 5A. The operation knob 5 assembled in this way aligns the three guide rails 5a formed on the outer periphery of the slide portion 5A with the three guide grooves 2d formed on the inner periphery of the holding cylinder portion 2c of the holder 2. In this state, the slide portion 5A is fitted into the holding cylinder portion 2c of the holder 2 from the front, so that the slide portion 5A is held so as to be able to advance and retreat in the front-rear direction along the guide groove 2d of the holder 2. When the operation portion 5B of the operation knob 5 is assembled to the slide portion 5A as shown in FIG. 2, the front end portion of the indicator lighting lens 17 housed in the lens mounting portion 5d is formed in the operation portion 5A. The lens 17 and the operation portion 5B are exposed in the vehicle interior of the vehicle.

  Then, when the operation knob 5 is fitted and held in the holder 2 as described above, the ring-shaped cap 18 is finally fitted and fixed to the outer periphery of the front end portion of the holder 2. Here, a total of four engagement pieces 18a are integrally projected rearward on the top, bottom, left, and right of the cap 18, and each engagement piece 18a is formed with a rectangular engagement hole 18b. . Therefore, the cap 18 fits each engagement piece 18a from the front into the insertion portion 2a formed at four positions on the upper and lower sides and the right and left sides of the cylindrical portion 2A of the holder 2, and the engagement hole formed in the engagement piece 18a. The engaging protrusion 2b formed on the insertion portion 2a of the holder 2 is engaged with the holder 18b, whereby the outer periphery of the front end portion of the holder 2 is fixed.

  As shown in FIG. 2, the printed circuit board 9 and the rubber sheet 8 attached to the printed circuit board 9 are accommodated in the rear end portion of the case 4. Here, an intermediate female connector 19 is attached to the upper center of the front surface of the printed circuit board 9, and this intermediate female connector 19 is connected to the intermediate male connector 10 attached to the lower surface of the rear end of the printed circuit board 7. Yes.

  As shown in FIG. 1, a pair of fixed contacts 20 are mounted on the left and right sides of the front surface of the printed circuit board 9. The space between these fixed contacts 20 is displayed on the operation portion 5 </ b> B of the operation knob 5. The left and right two LEDs 21 for illuminating characters are mounted, and screw holes 9a are formed. An LED 22 for indicator illumination is mounted below the screw holes 9a. A connector 23 is attached to the lower portion of the printed circuit board 9 with two screws 24 on the left and right sides. The connector 23 has a total of twelve connection terminals 25 arranged in six rows in the horizontal direction and two rows in the upper and lower sides. These connection terminals 25 penetrate through the printed circuit board 9 and protrude from the front surface thereof.

  As shown in FIGS. 2 and 3, the rubber sheet 8 having the same shape with high electrical insulation is attached to the printed circuit board 9. The rubber sheet 8 is attached to the printed circuit board 9 at the upper center of the rubber sheet 8. In addition, a rectangular through hole 8a through which the intermediate female connector 19 passes is formed, and a switch portion 26 is provided on the lower left and right sides thereof (location corresponding to the fixed contact 20 mounted on the printed circuit board 9). Yes. Here, each switch portion 26 is in contact with a pair of left and right switch operation portions 5e protruding from the rear end of the slide portion 5A of the operation knob 5.

  A screw hole 8b is formed at the center of the switch portion 26 of the rubber sheet 8 (a position corresponding to the screw hole 9a formed in the printed circuit board 9). Two rectangular windows 8d are respectively formed. The LEDs 21 and 22 mounted on the printed circuit board 9 are fitted into the rectangular windows 8c and 8d, respectively, and the emission surfaces of the LEDs 21 and 22 are exposed forward from the rectangular windows 8c and 8d, respectively. Yes.

  Further, at the lower part of the rubber sheet 8, a rectangular bag-like convex portion 8 e is provided so as to avoid interference with the tip portion of the connection terminal 25 provided on the connector 23 that penetrates the printed circuit board 9. Each switch portion 26 provided on the rubber sheet 8 is formed in a dome shape, and a movable contact (not shown) is provided therein, and the switch portion 26 is pressed to move the movable contact and the printed circuit board 9. When the fixed contact 20 comes into contact with each other, the two are conducted and the switch unit 26 is turned on.

  Thus, when the rubber sheet 8 and the printed board 9 are assembled as shown in FIGS. 2 and 3, the antenna coil 13 held by the antenna holder 6 is connected to the connection terminal 15 and the spring constituting the movable connection means. 16 and the spring holding portion 11, the printed circuit board 7, the intermediate male connector 10 and the intermediate female connector 19 that are connected to each other, the connection portion 25 of the printed circuit board 9 and the connector 23, etc. It is electrically connected to a battery (not shown) and an authentication device via a coupler (not shown) and an electric cord.

  The indicator illumination LED 22 and the indicator illumination lens 17 mounted on the printed circuit board 9 are arranged in a straight line in the horizontal direction, and the illumination light emitted from the LED 22 is placed between the LED 17 and the lens 17. A cylindrical light guide pipe 27 for guiding is disposed. The light guide pipe 27 is fixed in a horizontal state by screwing screws 28 penetrating the cover 3 into screw holes 9a and 8b formed in the printed circuit board 9 and the rubber sheet 8, respectively.

  FIGS. 2 and 3 show the non-operating state of the switch device 1. In this state, a pair of left and right switch operating portions 5 e that protrude horizontally at the rear end of the slide portion 5 </ b> A of the operating knob 5 are used as switches of the rubber seat 8. Since the part 26 is not pressed and the movable contact of the switch part 26 is not in contact with the fixed contact 20 on the printed circuit board 9 side, both are in a non-conductive state, and the switch part 26 is in the OFF state.

  Thus, in the switch device 1 according to the present embodiment which is an engine start / stop switch, when the driver operates the operation portion 5B of the operation knob 5 and pushes in the operation knob 5, the operation knob 5 slides. Since the pair of left and right switch operating portions 5e formed on the portion 5A pushes in the switch portion 26 of the rubber sheet 8, the movable contact of each switch portion 26 comes into contact with the fixed contact 20 on the printed circuit board 9 side, and both are conducted. The two switch units 26 are turned on simultaneously. Note that light is emitted from the LED 22 on the printed circuit board 9 by pressing the operation knob 5 to turn on / off the switch portion 26, and this light passes through the light guide pipe 27 and the lens 17 to be operated. A light is emitted from the opening window 5h of the operation unit 5B and an indicator is displayed. At night, the LED 21 on the printed circuit board 9 is driven, and the illumination light emitted from the LED 21 passes through the slide portion 5A of the operation knob 5 to reach the operation portion 5B. Illuminate the whole.

  As described above, when the two switch units 26 are simultaneously turned ON, the vehicle authentication device transmits a starting radio wave from the coil antenna 13 when the engine is stopped. Then, an electromotive force is generated by a coil portion in a transponder provided in a portable device possessed by the driver, and an ID signal is transmitted to the authentication device of the vehicle by the power.

  Next, the vehicle authentication device collates the ID code included in the ID signal received from the coil antenna 13 with the ID code stored in advance, and if both match, the authentication is OK and the engine can be started. Start the engine as a condition. When the engine is started, the engine is stopped when the two switch portions 26 of the switch device 1 are simultaneously turned on.

  Thereafter, when the driver releases his / her hand from the operation knob 5 of the switch device 1, the operation knob 5 returns to the original non-operation position shown in FIGS. 2 and 3 by the elastic restoring force of the switch portion 26 and the spring 16. The switch operating portion 5e of the knob 5 is separated from the switch portion 26, and the switch portion 26 is turned off.

  In the above, according to the switch device 1 according to the present embodiment, since the antenna holder 6 and the coil antenna 13 held by the antenna holder 6 are arranged on the operation knob 5, a coil is formed like the conventional switch device 101 shown in FIG. Compared to the configuration in which the antenna 113 is arranged radially outward of the operation knob 105, the switch device 1 can be downsized. Since the coil antenna 13 is covered with the operation knob 5 and cannot be seen from the outside, the appearance of the switch device 1 is improved.

  Further, according to the switch device 1 of the present invention, even when the operation knob 5 is moved forward and backward by the switch operation, the spring 16 is expanded and contracted to maintain the electrical connection between the coil antenna 13 and the printed circuit board 7. Thus, stable operation of the switch device 1 is possible, and occurrence of failures such as disconnection is prevented. In such a configuration, since there is no sliding portion in the movable connecting means constituted by the spring 16, there is no problem of damage or noise due to wear, and the durability of the movable connecting means is enhanced. .

  Further, in the switch device 1 according to the present invention, since the conductive spring holding portion 11 that receives one end of the spring 16 protrudes on the printed circuit board 7, the spring 16 is prevented from falling off with a simple structure, and the coil antenna 13 and A stable electrical connection with the printed circuit board 7 becomes possible.

  Further, in the switch device 1 according to the present invention, since the printed circuit board 7 constituting a part of the wiring part is arranged outside the holding cylinder part 2c of the holder 2, the part where the operation knob 5 advances and retreats and the printed circuit board 7 are arranged. The operation knob 5 that moves forward and backward along the holding cylinder portion 2c does not come into contact with the printed circuit board 7, and the printed circuit board 7 is prevented from being damaged and durable. As a result, the effect of facilitating the arrangement of the printed circuit board 7 can be obtained.

<Embodiment 2>
Next, a second embodiment of the present invention will be described with reference to FIG.

  FIG. 4 is a side sectional view of the switch device according to Embodiment 2 of the present invention. In FIG. 4, the same elements as those shown in FIGS. The re-explanation about is omitted.

  In the switch device 1 ′ according to the present embodiment, the movable connecting means is an antenna arranged on the printed circuit board 7 constituting a part of the wiring portion along the advancing / retreating direction (left-right direction in FIG. 4) of the operation knob 5. And the antenna movable contact 30 provided in the antenna holder 6 and in sliding contact with the antenna fixed contact 29. The other configuration is the switch device 1 according to the embodiment. Is the same as that.

  Thus, according to the switch device 1 ′ according to the present embodiment, the antenna movable contact 30 slides on the antenna fixed contact 29 even when the operation knob 5 moves forward and backward by the switch operation. Thus, since the electrical connection between the coil antenna 13 and the printed circuit board 7 is maintained, the switch device 1 ′ can be stably operated, and failure such as disconnection can be prevented. The same effect as 1 is obtained.

  In addition, the switch device 1 ′ according to the present embodiment can obtain the same effects as those obtained in the switch device 1 according to the first embodiment.

  Although the present invention has been described with respect to a mode in which the present invention is applied to a switch device as an engine start / stop switch, the present invention is also applicable to any other switch device having the same type of configuration. Of course.

1, 1 'switch device 2 holder 2A holder cylindrical portion 2B holder semi-cylindrical portion 2a holder insertion portion 2b holder engaging projection 2c holder holding cylinder portion 2d holder guide groove 2e holder substrate mounting portion 2f holder 2g Holder engagement hole 3 Cover 3A Semi-cylindrical portion of the cover 3B Cover lid portion 3a Base shaft support portion 3b Round hole in the shaft support portion 4 Case 5 Operation knob 5A Slide portion of operation knob 5B Operation portion of operation knob 5a Operation knob guide rail 5b Operation knob engagement protrusion 5c Operation knob antenna housing part 5d Operation knob lens mounting part 5e Operation knob switch operation part 5f Operation knob fitting part 5g Operation knob engagement hole 5h Operation knob 6A antenna holder 6A antenna holder holding part 6B antenna holder terminal holding part 6a antenna holder Groove 7 Printed circuit board 7a Printed circuit board insertion hole 7b Printed circuit board screw insertion hole 8 Rubber sheet 8a Rubber sheet through hole 8b Rubber sheet screw hole 8c, 8d Rubber sheet rectangular window 8e Rubber sheet convex part 9 Printed circuit board 9a Screw hole of printed circuit board 10 Intermediate male connector 11 Spring holding part 12 Screw 13 Coil antenna 14 Antenna connection part 15 Connection terminal 16 Spring (movable connection means)
17 Indicator connecting lens 18 Cap 18a Cap engaging piece 18b Cap engaging hole 19 Intermediate female connector 20 Fixed contact 21, 22 LED
23 Connector 24 Screw 25 Connection terminal 26 Switch (detection means)
27 Light guide pipe 28 Screw 29 Fixed contact for antenna (movable connection means)
30 Moving contact for antenna (movable connection means)

Claims (5)

A holder, an operation knob held by the holder so as to be able to advance and retreat, a detection means for detecting an operation of the operation knob, a coil antenna for transmitting an activation radio wave for operating an external portable device, and the coil antenna In a switch device comprising an antenna holder for holding, and a wiring portion for connecting the coil antenna to an external electric circuit,
The antenna holder and the coil antenna held by the antenna holder are arranged on the operation knob, and the coil antenna that moves forward and backward integrally with the operation knob and the wiring portion provided on the holder side are electrically connected. A switch device comprising a movable connecting means for maintaining the connection.   2. The switch device according to claim 1, wherein the movable connecting means is constituted by a conductive spring disposed between the coil antenna and the wiring portion.   A part of the wiring part is constituted by a substrate arranged along the advancing / retreating direction of the operation knob, and a conductive spring holding part for receiving one end of the spring is projected on the substrate. The switch device according to claim 2.   The movable connecting means includes an antenna fixed contact disposed along the advancing / retreating direction of the operation knob on a substrate constituting a part of the wiring portion, and a sliding contact with the antenna fixed contact provided on the antenna holder. 2. The switch device according to claim 1, wherein the switch device comprises a movable contact for antenna. The holding cylinder part which hold | maintains the said operation knob so that it can advance / retreat inside is formed in the said holder, The said wiring part has been arrange | positioned on the outer side of this holding | maintenance cylinder part. Switch device.

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