WO2021182040A1

WO2021182040A1 - Switch device

Info

Publication number: WO2021182040A1
Application number: PCT/JP2021/005853
Authority: WO
Inventors: 克史小畑; 伸治長谷川; 智彦石垣; 一輝内木
Original assignee: 株式会社東海理化電機製作所
Priority date: 2020-03-12
Filing date: 2021-02-17
Publication date: 2021-09-16
Also published as: JP2021144866A; JP7303140B2

Abstract

This switch device comprises a switch unit 31 operated when activating an object to be operated. The switch device comprises: a first antenna 33 capable of first contactless communication at a predetermined frequency with an electronic tag; and a second antenna 34 communicating with another electronic tag by second contactless communication at a different frequency from the first contactless communication. The communication results of the first contactless communication and the second contactless communication provide one condition for activation of the object to be operated. The first antenna 33 and the second antenna 34 are both provided in the switch unit 31. In addition, at least one of the first antenna 33 and the second antenna 34 is provided in an operation part 35 of the switch unit 31.

Description

Switch device

The present invention relates to a switch device having a non-contact communication function.

Conventionally, an electronic key system in which an electronic key and an in-vehicle device mounted on a vehicle automatically wirelessly communicate with each other to perform ID authentication is well known. Inside the vehicle equipped with the electronic key system, a switch device operated to switch the power state of the vehicle is provided. The switch device switches the power supply state of the vehicle to, for example, IG off, ACC on, IG on, and engine start by being operated in a situation where ID verification by the electronic key system is established.

The electronic key is normally operated by the battery in the electronic key to execute wireless communication with the vehicle. However, when the battery of the electronic key runs out, wireless communication cannot be performed and ID verification by the electronic key system cannot be executed. Therefore, as an alternative to the electronic key system, the vehicle is provided with an immobilizer system that executes non-contact communication while supplying electric power to the electronic key by driving radio waves even if the battery of the electronic key is dead.

The switch device described in Patent Document 1 is provided with a coil antenna for non-contact communication in the immobilizer system. The electronic key is provided with an electronic tag that transmits authentication information by the electric power induced by the driving radio wave when the driving radio wave is received. When the drive radio wave is transmitted from the coil antenna, the authentication information is transmitted from the electronic tag by bringing the electronic key close to the coil antenna by holding it near the coil antenna. When the coil antenna receives the authentication information from the electronic tag, the coil antenna executes the authentication of the immobilizer system based on the authentication information. Then, based on the authentication result, switching of the power supply state by operating the switch device is permitted.

Japanese Unexamined Patent Publication No. 2004-314806

In recent years, it has been considered to be able to operate a vehicle by storing key information in a terminal such as a smartphone owned by a user and authenticating the key information by short-range wireless communication between the terminal and the vehicle. Even when such a terminal is used as a vehicle key, a backup terminal is required when the battery of the terminal is exhausted, such as an electronic tag of an electronic key system. As a countermeasure, it is assumed that another electronic tag such as a contactless IC card is used.

However, if the communication frequency bands of the non-contact communication of the electronic key and the IC card are different from each other, the switch device may require two coil antennas. In this case, there is a concern that the physique of the switch device will be increased by securing the mounting space for the coil antenna.

An object of the present invention is to provide a switch device capable of non-contact communication in two different frequency bands while suppressing an increase in body size.
The switch device for solving the above problems is capable of first non-contact communication with the electronic tag and a predetermined frequency with the switch unit operated when operating the operation target, and the communication result of the first non-contact communication. Is provided in the switch unit together with the first antenna provided in the switch unit and the first antenna so that is a condition for the operation of the operation target, and other electronic tags different from the electronic tag may also be used. A second antenna provided to communicate with the other electronic tag in a second non-contact communication having a frequency different from that of the first non-contact communication is provided so that the operation target can be operated. At least one of the first antenna and the second antenna is provided in the operation unit of the switch unit.

The switch device of the present invention enables non-contact communication in two different frequency bands while suppressing an increase in body size.

The block diagram which shows the structure of the switch device provided in the authentication system. The perspective view which shows the appearance of a switch unit. Schematic cross-sectional view of the switch unit. Explanatory drawing of the first non-contact communication. Explanatory drawing of the second non-contact communication. Operation diagram of the switch unit.

Hereinafter, an embodiment of the switch device will be described with reference to the drawings.
As shown in FIG. 1, the vehicle 1 is provided with an authentication system 4 that permits the operation of the operation target 3 through short-range wireless communication with the terminal 2 owned by the user. The terminal 2 is, for example, a high-performance mobile phone, a so-called smartphone. In the authentication system 4, for example, the correctness of the terminal 2 registered as the vehicle key is determined. Further, the authentication system 4 of the present embodiment determines whether or not the in-vehicle device can be operated through wireless collation communication with the electronic key 5 in addition to confirming the correctness of the terminal 2 using short-range wireless communication.

The vehicle 1 includes a verification ECU (Electronic Control Unit) 6 that authenticates and collates the terminal 2 and the electronic key 5, and an engine ECU 7 that controls the engine 8 as the operation target 3. The collation ECU 6 and the engine ECU 7 are connected to each other.

The vehicle 1 is provided with a short-range wireless communication unit 9 that executes short-range wireless communication with the terminal 2. Near field communication is, for example, Bluetooth (Bluetooth: registered trademark) communication. The short-range wireless communication unit 9 of the present embodiment performs BLE (Bluetooth Low Energy) communication with the terminal 2. In BLE communication, the BLE communication connection is executed when the master responds to the advertising packet from the slave. In the BLE communication of the present embodiment, the terminal 2 is the master and the vehicle 1 is the slave. For example, the matching ECU 6 and the terminal 2 are paired by transmitting identification information such as a device address used for short-range wireless communication to each other. Communication connection processing is automatically executed between the matching ECU 6 and the terminal 2 for which the pairing setting has been completed.

The vehicle 1 is provided with a collation communication unit 10 that performs wireless collation communication with the electronic key 5. The collation communication unit 10 transmits radio waves in the LF (Low Frequency) band and receives radio waves in the UHF (Ultra High Frequency) band.

The terminal 2 performs ID verification processing by short-range wireless communication with the vehicle 1 by, for example, an application downloaded through network communication. The key information registered in the terminal 2 is stored in the memory 21 of the terminal 2. The terminal 2 acquires key information through network communication, for example, when it is registered as a vehicle key. The key information is preferably, for example, a one-time key or the like. As a result, the terminal 2 can perform various processes such as ID verification with the vehicle 1, locking / unlocking operation of the vehicle door, and starting operation of the engine 8.

The collation ECU 6 collates the key information with the terminal 2 when, for example, the vehicle key registration of the terminal 2 is completed and the BLE communication connection with the terminal 2 is established. When the collation ECU 6 confirms that the key information authentication is established, the collation ECU 6 determines that the ID collation is established. Then, the collation ECU 6 permits the operation of the operation target 3 on condition that the ID collation is established by the collation ECU 6.

A unique electronic key ID and key unique key (not shown) are registered in the electronic key 5. The electronic key 5 receives radio waves in the LF band and transmits radio waves in the UHF band as a response to execute collation communication. The collation ECU 6 performs, for example, collation of an electronic key ID and cryptographic authentication using a key unique key through collation communication. When the collation and authentication are established through the collation communication, the collation ECU 6 permits the operation of the operation target 3.

The vehicle 1 includes a switch device 30 that manages the operation of the operation target 3. The vehicle 1 includes a switch unit 31 that is operated when the operation target 3 is operated. The switch unit 31 is provided with an operation detection unit 32 that detects an operation by the user. The operation detection unit 32 outputs an operation signal to the collation ECU 6 when, for example, an operation is detected. The collation ECU 6 switches the power supply state of the vehicle 1 based on the input operation signal, provided that the key information authentication is established. The vehicle power supply can be switched to, for example, IG off, ACC on, IG on, or engine start.

The vehicle 1 is provided with an immobilizer system 40 that executes ID verification through non-contact communication. When the immobilizer system 40 cannot execute short-range wireless communication by the terminal 2 and collation communication by the electronic key 5 due to the battery exhaustion of the terminal 2 and the electronic key 5 or the influence of noise, the immobilizer system 40 is an alternative to ID collation by these communications. Is provided in the vehicle 1.

The vehicle 1 is provided with a first antenna 33 that performs first non-contact communication with the electronic tag 41, and a second antenna 34 that performs second non-contact communication with another electronic tag 42 different from the electronic tag 41. There is. The first antenna 33 and the second antenna 34 are provided in the switch unit 31. The communication results of the first non-contact communication and the second non-contact communication are one condition for operating the vehicle power supply by the switch device 30. The non-contact communication is, for example, RFID (Radio Frequency IDentification) communication.

The electronic tag 41 that performs the first non-contact communication with the first antenna 33 is, for example, a transponder 50 provided on the electronic key 5. The transponder 50 is, for example, a unit of an IC (not shown) and a coil antenna. The transponder ID used for ID verification is written and stored in the transponder 50.

Another electronic tag 42 that performs the second non-contact communication with the second antenna 34 is, for example, an IC card 60. The IC card 60 is provided with an IC card control unit 61 that controls the operation of the IC card 60 and a communication unit 62 that performs non-contact communication. The card ID used for ID verification through the second non-contact communication is written and stored in the IC card control unit 61. The IC card 60 is carried by, for example, a user who intends to operate the operation target 3 by the terminal 2.

In the case of this embodiment, the first non-contact communication is a standard communication for transmitting and receiving low frequency radio waves in RFID. In the first non-contact communication, for example, radio waves in the LF band are transmitted and received. The second non-contact communication is a standard communication for transmitting and receiving radio waves having a frequency in the megahertz band. The second non-contact communication is, for example, NFC (Near Field Communication) standard communication in which radio waves in the HF (High Frequency) band are used. Further, the first non-contact communication and the second non-contact communication are passive types in which the transponder 50 and the IC card 60 are driven by using the drive radio waves transmitted from the first antenna 33 and the second antenna 34 as a power source, respectively. Although the transponder 50 can communicate in the LF band, it cannot communicate in the HF band. Further, although the IC card 60 can communicate in the HF band, it cannot communicate in the LF band.

The collation ECU 6 includes a communication control unit 11 that controls the first antenna 33 and the second antenna 34. Further, the transponder ID and the card ID are stored in the memory 12 of the collation ECU 6. The communication control unit 11 operates the first antenna 33 and the second antenna 34 at different timings to execute communication. When the first non-contact communication is executed between the first antenna 33 and the transponder 50, the communication control unit 11 acquires the transponder ID via the first antenna 33. Further, when the second non-contact communication is executed between the second antenna 34 and the IC card 60, the communication control unit 11 acquires the card ID via the second antenna 34. The collation ECU 6 collates the ID of the immobilizer system 40 using the acquired transponder ID and card ID. The collation ECU 6 permits the switch device 30 to switch the vehicle power supply when the ID collation is established.

As shown in FIGS. 2 and 3, the switch unit 31 includes an operation unit 35 that receives an operation and a housing 36 that movably holds the operation unit 35. The housing 36 has, for example, a tubular shape having an axis L extending in the depth direction. The operation unit 35 is provided on the axis L and is provided so as to be movable back and forth in the depth direction with respect to the housing 36. In one example, the tubular housing 36 holds the operating portion 35 so that the operating portion 35 can move along the axis L of the housing 36 within the housing 36. The operation unit 35 is provided with an operation surface 35a exposed from the housing 36 on one side in the depth direction. Hereinafter, in the depth direction of the switch unit 31, the side provided with the operation surface 35a side of the operation unit 35 is referred to as the front side, and the opposite side is referred to as the back side.

The housing 36 has a cylindrical portion 36a provided so as to surround the periphery of the operation portion 35, a bezel 36b formed in an annular shape on the front side of the cylindrical portion 36a, and a base having a quadrangular cross section extending to the back side of the cylindrical portion 36a. It has a part 36c.

The substrate 37 is housed inside the root portion 36c. The substrate 37 is fixed to the root portion 36c. The substrate 37 is connected to the collating ECU 6 via a communication line 38 connected to a connector portion 37a provided on the back surface thereof.

The operation unit 35 is urged to the front side by, for example, an urging member (not shown). When the operation unit 35 is pushed toward the back side, the operation unit 35 is pushed into the housing 36 against the urging force of the urging member. Further, when the pressing operation is released, the operation unit 35 returns to the initial position on the front side by the urging force of the urging member. That is, the switch unit 31 is a push momentary type switch that is operated by pressing the operation unit 35.

The operation detection unit 32 is arranged on the front side of the substrate 37 facing the operation unit 35. That is, the operation detection unit 32 is arranged on the surface of the substrate 37 facing the knob 35. The operation detection unit 32 is, for example, a tact switch, and two operation detection units 32 are provided on the substrate 37. The operation unit 35 is provided with an extending portion 35b extending toward the back surface side toward the substrate 37. The end surface of the extending portion 35b on the back surface side faces the operation detecting portion 32. When the operation unit 35 is pressed and moved to the back side in the depth direction, the operation detection unit 32 is pushed by the extending unit 35b. As a result, the pressing operation is detected. The operation detection unit 32 outputs an operation signal when the pressing operation is detected.

The operation surface 35a of the operation unit 35 is provided with, for example, a display unit 35c indicating the function of the switch unit 31. The display unit 35c is configured to light up when, for example, light is applied from the back side. The operation unit 35 is configured so that, for example, light from an illumination (not shown) provided on the substrate 37 hits the display unit 35c. In the case of the present embodiment, the operation unit 35 is formed in a tubular shape so as to have a space between the display unit 35c and the substrate 37.

In the case of this embodiment, the first antenna 33 is provided in the cylindrical portion 36a of the housing 36. The second antenna 34 is provided on the operation unit 35. The first antenna 33 and the second antenna 34 are, for example, wound antennas in which a plurality of antenna wires are wound. The first antenna 33 and the second antenna 34 are wound in an annular shape around the axis L. The number of turns of the first antenna 33 and the second antenna 34 is set according to, for example, their respective communication frequencies. Further, it is preferable that the first antenna 33 and the second antenna 34 have different turns. In the figure, each antenna is schematically shown.

It is preferable that the first antenna 33 and the second antenna 34 are arranged in a separated positional relationship in the switch unit 31 so as to suppress the influence on the communication characteristics of each other. In the case of the present embodiment, the first antenna 33 and the second antenna 34 are arranged apart from each other in the depth direction of the switch unit 31. The second antenna 34 is wound around the front end of the operation unit 35 and is located on the front side of the first antenna 33. Further, the antenna diameters of the first antenna 33 and the second antenna 34 are different from each other. That is, the positions of the first antenna 33 and the second antenna 34 in the depth direction and the positions in the radial direction of the axis L are separated from each other.

The first antenna 33 and the second antenna 34 of this embodiment are connected to the substrate 37. The wiring 39a connecting the first antenna 33 and the substrate 37 passes through, for example, the outer surface side of the housing 36 from the first antenna 33. At the root portion 36c, it enters the inside of the housing 36 and is connected to the substrate 37.

Inside the housing 36, an electrical connection unit 70 for connecting the second antenna 34, which moves together with the operation unit 35, to the substrate 37 is provided. The electrical connection portion 70 of the present embodiment is a sliding contact. The electrical connection unit 70 includes a movable side contact 71 provided in the operation unit 35 and connected to the second antenna 34, and a fixed side contact 72 provided in the housing 36. The fixed side contact 72 is connected to the substrate 37 by a wiring 39b passing through the housing 36. The movable side contact 71 advances and retreats integrally with the operation unit 35. The electrical connection unit 70 is in a state in which the movable side contact 71 and the fixed side contact 72 are closed and the second antenna 34 and the substrate 37 are connected to each other when the operation unit 35 is at least in the initial position before the operation.

The communication control unit 11 of the collation ECU 6 generates radio waves around each antenna by supplying power to the first antenna 33 and the second antenna 34 via the substrate 37. The first antenna 33 and the second antenna 34 generate radio waves based on the signal generated by the circuit on the substrate 37, for example. Further, the signals received by the first antenna 33 and the second antenna 34 are demodulated by, for example, a circuit on the substrate 37. Further, the communication control unit 11 controls the first antenna 33 and the second antenna 34 so as to execute communication at different timings from each other. For example, the communication control unit 11 causes the first antenna 33 and the second antenna 34 to alternately transmit drive radio waves at different timings.

Hereinafter, the operation of this embodiment will be described.
As shown in FIGS. 4 and 5, the collation ECU 6 outputs an operation signal A1 as an operation command to the first antenna 33 and also outputs an operation signal A2 as an operation command to the second antenna 34 by the communication control unit 11. Output. The communication control unit 11 outputs operation signals A1 and A2, for example, when a predetermined condition is satisfied. Predetermined conditions include, for example, detection that the user is in the vehicle, that the brake pedal of the vehicle is depressed, that the ID verification of the terminal 2 and the electronic key 5 is not established, and the like. Further, the communication control unit 11 repeatedly and alternately outputs the operation signal A1 and the operation signal A2.

As shown in FIG. 4, the first antenna 33 transmits the LF band drive radio wave B1 based on the operation signal A1 from the matching ECU 6. When the electronic key 5 is arranged in the communication area of the drive radio wave B1 near the switch unit 31, the first antenna 33 executes the first non-contact communication with the transponder 50. At this time, the electronic key 5 is arranged in the communication area by, for example, an operation of holding the electronic key 5 over the front of the switch unit 31 by the user. In the first non-contact communication, the transponder 50 transmits a response signal C1 including its own transponder ID using the drive radio wave B1 as a power source. The response signal C1 is output to the matching ECU 6 via the first antenna 33.

As shown in FIG. 5, the second antenna 34 transmits the HF band drive radio wave B2 based on the operation signal A2 from the collation ECU 6. When the IC card 60 is arranged in the communication area of the drive radio wave B2 near the switch unit 31, the second antenna 34 executes the second non-contact communication with the IC card control unit 61. At this time, the IC card 60 is arranged in the communication area by, for example, an operation of holding the IC card 60 over the front of the switch unit 31 by the user. In the second non-contact communication, the IC card control unit 61 uses the drive radio wave B2 as a power source to transmit a response signal C2 including its own card ID. The response signal C2 is output to the matching ECU 6 via the second antenna 34.

When the response signal C1 is input, the collation ECU 6 confirms whether the transponder ID included in the response signal C1 matches the transponder ID stored in the memory 12. When these transponder IDs match, the collation ECU 6 determines that the ID collation has been established. Further, when the response signal C2 is input, the collation ECU 6 confirms whether the card ID included in the response signal C2 matches the card ID stored in the memory 12. When these card IDs match, the collation ECU 6 determines that the ID collation has been established.

As shown in FIG. 6, when the operation unit 35 is pressed, the operation unit 35 is pushed into the housing 36 against the urging force of an urging member (not shown), and is arranged at a position after the operation moved to the back side. .. At this time, the operation detection unit 32 detects the pressing operation by being pushed by the extending unit 35b of the operation unit 35, and outputs the operation signal S to the collation ECU 6. The collation ECU 6 switches the vehicle power supply when the operation signal S is input, provided that the ID collation is established.

In the electrical connection unit 70, when the operation unit 35 is in the position after the operation, the movable side contact 71 and the fixed side contact 72 are in an open state. That is, the connection between the second antenna 34 and the substrate 37 is disconnected. When the operation of the operation unit 35 is released and the electrical connection unit 70 returns to the initial position on the front side by the urging member or the like, the movable side contact 71 and the fixed side contact 72 are closed again (FIG. 3). Status). Here, assuming that the operation unit 35 is in the initial position before the operation when the non-contact communication is executed, the connection between the second antenna 34 and the board 37 is made at the initial position where the non-contact communication is executed. Can be secured. Further, if the second antenna 34 and the substrate 37 are connected only at the initial position, the fixed side contact 72 is extended to maintain the connection at the post-operation position, as compared with the configuration. Therefore, the structure of the electrical connection portion 70 can be simplified. Further, in the case of the present embodiment, since the electrical connection portion 70 has a contact structure of the movable side contact 71 and the fixed side contact 72, the operation unit 35 is more than the case where the second antenna 34 and the substrate 37 are connected by a cable or the like. It can be less likely to interfere with the operation of.

As described above, the first antenna 33 and the second antenna 34 provided in the same switch unit 31 can execute the first non-contact communication and the second non-contact communication having different frequencies from each other. When the user uses the electronic key 5, for example, even if the electronic key 5 runs out of battery, the transponder 50 can shift the operation of the vehicle power supply to permission. Further, when the user does not have the electronic key 5, for example, when operating the vehicle using the terminal 2, the operation of the vehicle power supply can be shifted to permission by using the IC card 60. ..

In the switch unit 31, the first antenna 33 is provided in the housing 36. The second antenna 34 is provided in the operation unit 35 arranged inside the housing 36. As a result, by arranging the antenna on the member on the inner side of the switch unit 31, it is possible to suppress the increase in physique. Further, by providing the first antenna 33 and the second antenna 34 on different members of the switch unit 31, the degree of freedom of arrangement of the first antenna 33 and the second antenna 34 can be improved.

By the way, the communication characteristics of the first antenna 33 and the second antenna 34 are affected by the surrounding metal materials. The communication characteristics include, for example, the communication distance, signal strength, noise level, etc. of the radio waves transmitted from each antenna. The communication characteristics of the first antenna 33 and the second antenna 34 tend to deteriorate as the distance between the first antenna 33 and the second antenna 34 increases. Therefore, when the distance between the first antenna 33 and the second antenna 34 is short, there is a concern that the communication characteristics of each other may be affected and the communication characteristics may be deteriorated.

In the case of the present embodiment, the first antenna 33 and the second antenna 34 are arranged in the switch unit 31 in a positional relationship separated from each other in the depth direction. Further, the first antenna 33 and the second antenna 34 are arranged in a positional relationship separated from each other in the radial direction of the axis L because the winding diameters are different from each other. As a result, the first antenna 33 and the second antenna 34 can suppress the influence on the communication characteristics of each other.

Further, the first antenna 33 and the second antenna 34 execute communication at different timings by the communication control unit 11. Therefore, the radio waves transmitted from each antenna do not interfere with each other. As a result, the influence on the communication characteristics can be suppressed.

Hereinafter, the effects of this embodiment will be described.
(1) The switch device 30 includes a switch unit 31 that is operated when the operation target 3 is operated. The switch device 30 has the transponder 50 of the electronic key 5, the first antenna 33 capable of the first non-contact communication of a predetermined frequency, and the IC card 60 in the second non-contact communication of a frequency different from the first non-contact communication. It is provided with a second antenna 34 for communication. The communication results of the first non-contact communication and the second non-contact communication are one condition of the operation of the operation target 3. Both the first antenna 33 and the second antenna 34 are provided in the switch unit 31. Further, at least one of the first antenna 33 and the second antenna 34 is provided in the operation unit 35 of the switch unit 31. According to this configuration, by providing an antenna in the operation unit 35 provided inside the housing 36 which is usually a housing, it is possible to suppress an increase in the physique. Therefore, it is possible to execute non-contact communication in two different frequency bands while suppressing an increase in body shape.

(2) The switch unit 31 includes an operation unit 35 and a housing 36 to which the operation unit 35 is movably attached. The first antenna 33 is provided in the housing 36. The second antenna 34 is provided on the operation unit 35. According to this configuration, by providing the first antenna 33 and the second antenna 34 on different members of the switch unit 31, the degree of freedom of arrangement of each can be improved.

(3) The switch device 30 includes an electrical connection unit 70 that connects the second antenna 34 provided in the operation unit 35 to the substrate 37 of the switch unit 31. The electrical connection unit 70 is provided so as to connect the second antenna 34 to the substrate 37 when the operation unit 35 is at least in the initial position before the operation. According to this configuration, at the initial position, the second antenna 34 is electrically connected to the substrate 37, and the second non-contact communication can be executed.

(4) The electrical connection portion 70 is a sliding contact provided in the housing 36 of the switch unit 31. The electrical connection unit 70 includes a movable side contact 71 connected to the second antenna 34 provided in the operation unit 35, and a fixed side contact 72 connected to the substrate 37 provided in the housing 36 of the switch unit 31. .. According to this configuration, the contact makes it possible to secure the electrical connection of the second antenna 34.

(5) The first antenna 33 and the second antenna 34 are arranged in the switch unit 31 in a separated positional relationship so as to suppress the influence on the communication characteristics of each other. According to this configuration, the first non-contact communication and the second non-contact communication can be easily established. This can contribute to the improvement of user convenience.

(6) The first antenna 33 and the second antenna 34 are arranged apart from each other in the depth direction of the switch unit 31. According to this configuration, the influence on the communication characteristics can be suppressed by separating in the depth direction. This can contribute to the improvement of user convenience.

(7) The first antenna 33 and the second antenna 34 are provided in an annular shape along the circumferential direction of the operation unit 35, and are formed so that the antenna diameters are different from each other. According to this configuration, by arranging the operation unit 35 in a positional relationship separated in the radial direction, it is possible to suppress the influence on the communication characteristics. This can contribute to the improvement of user convenience.

(8) The first non-contact communication is a standard communication for transmitting and receiving low frequency radio waves. The second non-contact communication is a standard communication for transmitting and receiving radio waves having a frequency in the megahertz band. The first non-contact communication and the second non-contact communication are passive types in which the transponder 50 and the IC card 60 are driven by using the drive radio waves transmitted from the first antenna 33 and the second antenna 34 as power sources. According to this configuration, no battery is required on the electronic tag side. This can contribute to the improvement of user convenience.

(9) The first antenna 33 and the second antenna 34 execute communication at different timings from each other. According to this configuration, communication with each other does not interfere with each other by communicating at the same time. That is, the influence on the communication characteristics can be suppressed.

(10) The switch unit 31 is a push switch that switches the operating state of the operation target 3 by pressing the operation unit 35. According to this configuration, a push switch having a non-contact communication function can communicate at two different frequencies.

In addition, this embodiment can be implemented by changing as follows. The present embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.
The second antenna 34 may be provided at a position on the back side of the first antenna 33, or may be provided with a larger antenna diameter. For example, the second antenna 34 may be provided in the cylindrical portion 36a, and the first antenna 33 may be provided in the operation portion 35.

The first antenna 33 may be provided on the inner surface side of the housing 36. Further, the first antenna 33 may be provided on the bezel 36b, the cylindrical portion 36a, or the root portion 36c.

-Both the first antenna 33 and the second antenna 34 may be provided in the operation unit 35.
-The first antenna 33 and the second antenna 34 may execute communication at the same timing. That is, the communication is not limited to being executed at different timings.

-The electrical connection portion 70 is not limited to the sliding contact, and may be various contacts or wiring such as a cable.
The electrical connection unit 70 may connect the second antenna 34 and the board 37 when the operation unit 35 is in the initial position before the operation, or when the operation unit 35 is in the position after the operation. It may be connected continuously from the initial position before the operation to the position after the operation, or a combination thereof may be used.

The first antenna 33 and the second antenna 34 may be directly connected to the outside without passing through the substrate 37.
-The frequencies and standards of the first non-contact communication and the second non-contact communication are not particularly limited. For example, the first non-contact communication and the second non-contact communication may be in the LF band, the HF band, or the UHF band. Further, it may be an electromagnetic induction method, an electromagnetic coupling method, or a radio wave method.

The first non-contact communication and the second non-contact communication are not limited to the passive type in which power is transmitted from the antenna side, and the active type in which the batteries provided in the electronic tag 41 and the other electronic tag 42 are used as a power source for communication. It may be.

The first antenna 33 and the second antenna 34 may be a wound antenna in which an antenna wire is wound, a loop antenna provided by etching or printing, or a dipole antenna.

-The electronic tag 41 is not limited to the transponder 50, and various RFID tags can be used.
-The other electronic tag 42 is not limited to the IC card 60, and various RFID tags can be used.

The switch unit 31 is not limited to a push switch, and may be a dial-type switch in which the operation unit 35 rotates around the axis L.
The switch device 30 is not limited to being applied to the immobilizer system 40 of the vehicle 1, and can be applied to various devices. Further, it is not limited to the one that performs collation as an alternative to the authentication system 4.

-The operation target 3 is not limited to this embodiment, and can be applied to various devices, buildings, and devices such as a door of a house.

1 ... Vehicle, 2 ... Terminal, 3 ... Operation target, 4 ... Authentication system, 5 ... Electronic key, 6 ... Verification ECU, 30 ... Switch device, 31 ... Switch unit, 32 ... Operation detection unit, 33 ... First antenna, 34 ... 2nd antenna, 35 ... Operation unit, 36 ... Housing, 37 ... Board, 40 ... Immobilizer system, 41 ... Electronic tag, 42 ... Electronic tag, 50 ... Transponder, 60 ... IC card, 70 ... Electrical connection, 71 ... Movable side contact, 72 ... Fixed side contact.

Claims

The switch unit to be operated when operating the operation target,
A first antenna provided in the switch unit so that first non-contact communication of a predetermined frequency with an electronic tag is possible and the communication result of the first non-contact communication is one condition of operation of the operation target. When,
A second non-contact frequency different from the first non-contact communication is provided in the switch unit together with the first antenna so that the operation target can be operated by another electronic tag different from the electronic tag. A second antenna provided to communicate with the other electronic tag in communication is provided.
At least one of the first antenna and the second antenna is a switch device provided in an operation unit of the switch unit.
The switch unit includes the operation unit and a housing to which the operation unit is movably attached.
The switch device according to claim 1, wherein one of the first antenna and the second antenna is provided in the operation unit, and the other is provided in the housing.
Among the first antenna and the second antenna, the antenna provided in the operation unit is provided with an electrical connection unit for connecting to the substrate of the switch unit.
The switch device according to claim 1 or 2, wherein the electrical connection unit is provided so as to connect the antenna to the substrate when the operation unit is at least in the initial position before operation.
The electrical connection portion is a contact provided in the housing of the switch unit, and is connected to a movable side contact connected to an antenna provided in the operation unit and the substrate provided in the housing of the switch unit. The switch device according to claim 3, further comprising a fixed side contact.
Any one of claims 1 to 4 in which the first antenna and the second antenna are arranged in a positional relationship separated from each other so as to suppress the influence on the communication characteristics of the switch unit. The switch device described in the section.
The switch device according to claim 5, wherein the first antenna and the second antenna are arranged apart from each other in the depth direction of the switch unit.
The switch device according to claim 5 or 6, wherein the first antenna and the second antenna are provided in an annular shape along the circumferential direction of the operating portion and are formed so that the antenna diameters are different from each other.
The first non-contact communication is a standard communication for transmitting and receiving low frequency radio waves.
The second non-contact communication is a standard communication for transmitting and receiving radio waves having a frequency in the megahertz band.
The first non-contact communication and the second non-contact communication are passive type in which the electronic tag and the other electronic tag are driven by using a driving radio wave transmitted from the antenna side as a power source. 7. The switch device according to any one of 7.
The switch device according to any one of claims 1 to 8, wherein the first antenna and the second antenna communicate with each other at different timings.
The switch device according to any one of claims 1 to 9, wherein the switch unit is a push switch that switches an operating state of the operation target by pressing the operation unit.