JP2010095016A - Switch device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a miniaturized switch device. <P>SOLUTION: The switch device 100, which performs the transmission of a transponder signal from a portable machine 108 that has a transponder used for immobilizer communication, includes: an operation part 101, which validates a switch operation when a reference code contained in the transponder signal matches a preset determination code; and a coil antenna 102, which outputs drive waveforms for causing the transponder to generate an electromotive force. This coil antenna 102 is embedded in the operation part 101 or wound in the hollow part of the operation part 101. In the switch device 100 of this structure, the coil antenna 102 can be arranged without providing a switch holder for arranging the coil antenna 102, so that it can inhibit the switch from becoming large in size. As a result, the miniaturized switch device 100 can be provided. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a switch device using a transponder.

  In recent years, an immobilizer key system using electromagnetic waves has been proposed for the purpose of preventing vehicle theft. Many push start systems are employed in the switch device portion of these immobilizer key systems.

  This push start system is a system that performs LF bidirectional transponder wireless communication with a communication distance of several centimeters between a base station and an electronic key by holding the electronic key over a push-type switch surface.

  Conventionally, as shown in FIG. 8, this type of switch device includes a bezel 5, a switch holder 6 joined to the bezel 5, a coil antenna 2 disposed inside the switch holder 6, and the switch holder. 6, the operation switch 1 disposed on the inner peripheral side, the switch contact portion 3 (a) provided on the surface facing the bezel 5 of the operation switch 1, and the switch contact portion provided on the surface facing the operation switch 1 of the bezel 5. 3 (b), and wireless communication was performed by the coil antenna 2.

As prior art document information relating to this application, for example, Patent Document 1 is known.
JP 2004-314806 A

  Such a conventional switch device has a problem that it is difficult to reduce the size.

  That is, in the above-described conventional configuration, since the communication distance of the transponder is only a few centimeters as described above, it is necessary to arrange the coil antenna 2 for the transponder at a distance that allows communication with the electronic key held over the operation switch 1. For this reason, since the switch holder 6 is provided along the outer edge of the operation switch 1 and the coil antenna 2 is arranged inside the switch holder 6, the switch device is enlarged.

  Therefore, the present invention solves the above-described conventional problems and realizes downsizing of the switch device.

  In order to achieve this object, the invention according to claim 1 of the present application is a switching device that transmits and receives a transponder signal to and from a portable device having a transponder. In the portable device, a verification code included in the transponder signal An operation unit that enables switch operation when a predetermined determination code matches, and a coil antenna that outputs a driving radio wave for generating electromotive force in the transponder; This is a switch device in which a coil antenna is embedded.

  The invention according to claim 3 of the present application is a switching device that transmits and receives a transponder signal to and from a portable device having a transponder, and a verification code that is included in the transponder signal and a determination code that is preset in the portable device And a coil antenna that outputs a driving radio wave for generating an electromotive force in the transponder. The operation unit has a bottomed cylindrical shape. The coil antenna is a switch device disposed in a hollow portion of the operation portion.

  Furthermore, the invention according to claim 5 of the present application is a switch device that transmits and receives a transponder signal to and from a portable device having a transponder, and a verification code included in the transponder signal and a determination that is preset in the portable device An operation unit that activates the switch operation when the code matches, a controlled body in which the operation unit is arranged on the inner peripheral side of the recess, and a driving radio wave for generating an electromotive force in the transponder The coil antenna is a switch device disposed on the inner peripheral side of the recessed portion of the controlled body.

  In the switch device of the present invention, the coil antenna can be disposed without providing a switch holder by embedding the coil antenna in the switch operation portion or in the hollow portion, thereby realizing a reduction in the size of the switch device. It can be done.

(Embodiment 1)
Hereinafter, the configuration of the switch device 100 according to Embodiment 1 of the present invention will be described with reference to the drawings.

  The switch device 100 shown in FIGS. 1 and 2 is effective when, for example, a verification code included in a transponder signal provided in a vehicle main body or the like matches a determination code set in advance in a portable device. And the coil antenna 102 that transmits and receives the transponder signal.

  At this time, the operation unit 101 has a bottomed cylindrical shape, and the coil antenna 102 is embedded in the operation unit 101 of the switch device 100.

  Specifically, as shown in FIGS. 1 and 2, the coil antenna 102 is embedded along the inner edge of the bottom of the bottomed cylindrical operation unit 101.

  With such a configuration, the communication distance by immobilizer communication between the coil antenna 102 and the portable device 108 described later is the shortest, communication can be easily performed, and the coil antenna 102 is embedded in the operation unit 101. Thus, the switch device 100 can be reduced in size.

  Here, a key system of the switch device 100 according to the first embodiment of the present invention will be described with reference to the drawings.

  As shown in FIG. 7, the push start system using immobilizer communication includes a switch device 100, a main body 107, and a portable device 108. When the switch device 100 is operated, the switch contact portion 103 (a) provided on the surface of the operation unit 101 facing the cage 104 in the switch device 100 shown in FIG. 1 and the surface of the switch device 100 facing the operation unit 101 of the cage 104. The switch contact portion 103 (b) provided in the main body portion 107 is in contact with the microcomputer contact portion 103 (b) and the microcomputer 107 (a) in the main body portion 107 detects that the switch operation has been performed, and the transponder IC (base station) 107 ( The radio signal is sent from b) to the transponder IC (mobile station) 108 (b) of the portable device 108 held by the driver via the coil antenna 102 and the coil antenna 108 (d) of the portable device 108. From the coil antenna 102, a driving radio wave for generating an electromotive force in the transponder IC (mobile station) 108 (b) is output to the communicable area. By arranging the transponder IC (mobile station) 108 (b) of the portable device 108 in this communicable area, an electromotive force is generated in the coil antenna 108 (d) provided in the portable device 108.

  The portable device 108 responds via the coil antenna 108 (d) of the portable device 108 and the coil antenna 102 of the switch device 100 in the same manner as the above-described wireless signal. When a transponder signal including a verification code is sent from the transponder IC (base station) 107 (b) that has confirmed the response to the portable device 108, a transponder signal including a determination code preset in the portable device 108 is returned, and this determination is made. Using the code, the microcomputer unit 107 (a) inside the main body unit 107 performs analysis.

  If the verification code matches the determination code, it is determined that the authentication is successful and the switch operation is validated. Here, the switch operation is validated, for example, it is possible that the starter relay driver 107 (c) moves due to the successful authentication and drives the stopped engine or stops the driving engine. That means.

  On the other hand, if it is determined that the verification code and the determination code do not match, it is determined that the authentication has failed and the switch operation cannot be validated. Here, the fact that the switch operation cannot be validated means that even if the push-type switch is operated, the stopped engine cannot be driven or the driven engine cannot be stopped.

  In addition, although the spring is interposed between the operation unit 101 and the cage 104, the operation unit 101 and the cage 104 are directly or indirectly connected, and the operation unit 101 is pressed or the like. As a result, the switch contact portion 103 (a) attached to the operation portion 101 and the switch contact portion 103 (b) attached to the retainer 104 are brought into contact with each other without rotating the operation portion 101. Means may be used.

  Further, the switch contact portion 103 (a) and the switch contact portion 103 (b) are in contact with each other only during an operation such as pressing. In the present embodiment, the switch contact portion 103 (a) and the switch contact portion 103 (b) are in contact with each other to detect that the microcomputer unit 107 (a) is operated by a switch. In addition, any configuration may be used as long as it can detect that the microcomputer unit 107 (a) is switched.

  In this embodiment, as shown in FIGS. 1 and 2, the coil antenna 102 is embedded along the inner edge of the bottom of the bottomed cylindrical operation unit 101, but the bottom of the operation unit 101 is circular. It is not limited, and may be a polygon such as a triangle or a quadrangle. Moreover, although it was set as the bottomed cylindrical shape, you may be the structure which has a leg part extended toward the holder | retainer 104 from this bottom part in the operation part 101. FIG. At this time, a switch contact portion may be attached to the tip of the leg portion. At that time, by embedding the coil antenna at the bottom of the operation unit 101, as described above, the communication distance by the immobilizer communication between the coil antenna 102 and the portable device 108 becomes the shortest, and communication can be easily performed. At the same time, since the coil antenna 102 is embedded in the operation unit 101, the switch device 100 can be downsized.

  Furthermore, the coil antenna 102 may be configured to be embedded in the entire bottom of the operation unit 101 or may be configured to be embedded in a part of the operation unit 101.

  The cage 104 may be provided as a part of the vehicle body or the like, or may be provided as a separate housing from the vehicle body.

(Embodiment 2)
Hereinafter, the switch device 100 according to Embodiment 2 of the present invention will be described with reference to the drawings.

  In addition, about what has the structure similar to Embodiment 1, the same code | symbol is attached | subjected, the description is abbreviate | omitted, and a difference is explained in full detail.

  3 and 4, the difference between the present embodiment and the first embodiment is that the coil antenna 102 is disposed in the hollow portion of the operation unit 109 of the switch device 100.

  Specifically, as shown in FIG. 3, the coil antenna 102 is wound around a protruding portion 109 (a) protruding from the bottom of the bottomed cylindrical operation portion 109 to the hollow portion side.

  With such a configuration, the communication distance by immobilizer communication between the coil antenna 102 and the portable device 108 can be kept short, and the coil antenna 102 and the portable device 108 can be fixed simply by being placed in the hollow portion and wound around the protrusion 109 (a). Since it is possible, productivity can be improved.

  In this embodiment, as shown in FIGS. 3 and 4, the coil antenna 102 is wound around the protruding portion protruding from the bottom of the bottomed cylindrical operation portion 109 toward the hollow portion. The bottom of 109 is not limited to a circle, but may be a polygon such as a triangle or a rectangle.

  As long as the coil antenna 102 is disposed on the hollow portion side of the operation unit 109, the coil antenna 102 can be downsized even if the coil antenna 102 is not wound around the protrusion.

  The cage 104 may be provided as a part of the vehicle body or the like, or may be provided as a separate housing from the vehicle body.

(Embodiment 3)
Hereinafter, the switch device 100 according to Embodiment 3 of the present invention will be described with reference to the drawings.

  In addition, about what has the structure similar to Embodiment 1, the same code | symbol is attached | subjected, the description is abbreviate | omitted, and a difference is explained in full detail.

  5 and 6, the difference between the present embodiment and the first embodiment is that the operation unit 111 is disposed in the recess 113 of the controlled body 112.

  Specifically, as shown in FIGS. 5 and 6, the coil antenna 102 is wound around a protrusion 112 (a) that protrudes from the bottom of the recess 113 of the controlled body 112 toward the operation unit 111.

  With such a configuration, when the operation unit 111 of the switch device 100 is operated, that is, when the operation unit 111 is pressed, the switch operation can be performed without the movement of the coil antenna 102 accompanying the movement of the operation unit 111. I can do it. As a result, it can be suppressed that the surface of the coil antenna 102 is worn by rubbing against other components and the durability is lowered.

  In the present embodiment, as shown in FIGS. 5 and 6, the coil antenna 102 is wound around the protrusion 112 (a) that protrudes from the bottom on the inner peripheral side of the recess 113 of the controlled body 112 toward the operation portion 111. However, if the coil antenna 102 is disposed on the inner peripheral side of the recessed portion 113 of the controlled body 112, it is possible to reduce the size.

  However, as shown in FIGS. 5 and 6, the coil antenna 102 is wound around the protrusion 112 (a) that protrudes from the bottom on the inner peripheral side of the recessed portion 113 of the controlled body 112 toward the operation portion 111. In this case, as described above, the surface of the coil antenna 102 is worn away, and it is possible to prevent the durability from being deteriorated, and it is possible to fix the coil antenna 102 only by winding the protrusion 112 (a). It is desirable to improve productivity.

  Since the switch device of the present invention can be reduced in size as compared with the prior art, it is useful in a switch device that combines wireless authentication and a switch.

Sectional drawing of the switch apparatus in Embodiment 1 of this invention A-AA sectional view of FIG. Sectional drawing of the switch apparatus in Embodiment 2 of this invention B-BB sectional view of FIG. Sectional drawing of the switch apparatus in Embodiment 3 of this invention C-CC sectional view of FIG. The block diagram which shows the electric constitution of immobilizer communication using the switch apparatus of this invention Sectional view of a conventional switch device

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Switch apparatus 101 Operation part 102 Coil antenna 103 (a), (b) Switch contact part 104 Cage 107 Main body part 107 (a) Microcomputer 107 (b) Transponder IC (base station)
107 (c) Starter relay driver 108 Portable device 108 (b) Transponder IC (mobile station)
108 (d) Coil antenna 109 Operation part 109 (a) Projection part 111 Operation part 112 Controlled body 112 (a) Projection part 113 Concave part

Claims (6)

A switch device that transmits and receives a transponder signal to and from a portable device having a transponder.
An operation unit that activates a switch operation when a verification code included in the transponder signal matches a determination code set in advance in the portable device;
A coil antenna that outputs a driving radio wave for generating an electromotive force in the transponder;
A switch device in which the coil antenna is embedded in the operation unit. The operating portion has a bottomed cylindrical shape,
The switch device according to claim 1, wherein the coil antenna is embedded in a bottom portion of the operation unit. A switch device that transmits and receives a transponder signal to and from a portable device having a transponder.
An operation unit that activates a switch operation when a verification code included in the transponder signal matches a determination code set in advance in the portable device;
A coil antenna that outputs a driving radio wave for generating an electromotive force in the transponder;
The operation device has a bottomed cylindrical shape, and the coil antenna is disposed in a hollow portion of the operation portion. The switch device according to claim 3, wherein the coil antenna is wound around a protrusion that protrudes from the bottom surface of the operation portion toward the hollow portion. A switch device that transmits and receives a transponder signal to and from a portable device having a transponder.
An operation unit that activates a switch operation when a verification code included in the transponder signal matches a determination code set in advance in the portable device;
A controlled body in which the operation portion is disposed on the inner peripheral side of the recess;
A coil antenna that outputs a driving radio wave for generating an electromotive force in the transponder;
The coil antenna is a switch device disposed on the inner peripheral side of the recessed portion of the controlled body. The switch device according to claim 5, wherein the coil antenna is wound around a protrusion that protrudes from the bottom of the recess toward the operation unit.

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