JP6851250B2 - Vehicle door handle device - Google Patents

Description

The present invention relates to a vehicle door handle device.

The door handle device disclosed in Patent Document 1 includes an antenna unit including an antenna, an unlock sensor, a lock sensor, and a circuit board. The antenna is used for communication with an electronic key (portable device) owned by the user. Further, the unlock sensor and the lock sensor are self-capacitating proximity sensors, and each includes one electrode made of a thin metal plate.

Japanese Patent No. 5480112

In the door handle device of Patent Document 1, the antenna and the circuit board are connected by one electrode constituting the unlock sensor. Therefore, there is room for improvement in the mechanical connection strength of the circuit board to the antenna.

An object of the present invention is to provide a vehicle door handle device having improved mechanical connection strength of a circuit board with respect to an antenna.

The present invention comprises a resin handle including a grip portion having an inner wall facing the door panel and an outer wall located on the side opposite to the door panel with respect to the inner wall, and a handle of the grip portion arranged in the grip portion. An antenna having an inner portion facing the inner wall and an outer portion facing the outer wall of the grip portion, a first drive electrode arranged on the inner wall side in the grip portion, and the inner wall side in the grip portion. A first sensor having a first detection electrode for which an electric field is generated between the first drive electrode and the first drive electrode, and the first drive electrode on the outer wall side in the grip portion. A second sensor having an auxiliary detection electrode for generating an electric field between the first drive electrode and the first drive electrode, the first drive electrode, the first detection electrode, and the auxiliary detection electrode are electrically arranged so as to face each other. A sensor control unit which is connected and detects an electric field change of the first sensor and the second sensor is mounted, and includes a circuit board arranged in the grip portion, and the circuit board is connected to the inner wall of the grip portion. It has an inner portion facing the grip portion and an outer portion facing the outer wall of the grip portion, and is arranged side by side in the longitudinal direction of the grip portion with respect to the antenna. The first drive electrode and the first detection The electrode has a main fixing portion fixed to the inner portion of the antenna and a sub-fixing portion protruding from the antenna in the longitudinal direction of the grip portion and fixed to the circuit board, respectively, and the auxiliary detection electrode Provides a vehicle door handle device having a main fixing portion fixed to the outer portion of the antenna and a sub-fixing portion protruding from the antenna in the longitudinal direction of the grip portion and fixed to the circuit board. To do.

In this vehicle door handle device, the main fixing portion of the first drive electrode and the main fixing portion of the first detection electrode are fixed to the inner portion of the antenna, and the main fixing portion of the auxiliary detection electrode is fixed to the outer portion of the antenna. ing. That is, the three electrodes sandwich the antenna. Further, the sub-fixing portion of the first drive electrode, the sub-fixation portion of the first detection electrode, and the sub-fixation portion of the auxiliary detection electrode are fixed to the circuit board. That is, the circuit board is fixed to three electrodes fixed to the antenna so as to sandwich the antenna. Therefore, the mechanical connection strength of the circuit board to the antenna can be improved as compared with the case where the antenna and the circuit board are connected by only one electrode.

In the vehicle door handle device of the present invention, the mechanical connection strength of the circuit board to the antenna can be improved.

The front view of the door handle device for a vehicle which concerns on embodiment of this invention. FIG. 1A is a cross-sectional view taken along the line II. A perspective view of the antenna unit as viewed from the outer surface side. A perspective view of the antenna unit before the resin mold as viewed from the outside. A perspective view of the antenna unit before the resin mold as viewed from the inside. An exploded perspective view of the antenna unit. Block diagram of the system including the handle device. Side view of the antenna. The perspective view which shows the surface electrode. The perspective view which shows the 1st process of the assembly work of an antenna unit. The perspective view which shows the 2nd process of the assembly work of an antenna unit. The cross-sectional view which shows a part of the state after the completion of the 2nd process. The perspective view which shows the 3rd process of the assembly work of an antenna unit. The perspective view which shows the 4th process of the assembly work of an antenna unit. The perspective view which shows the 5th process of the assembly work of an antenna unit.

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

In the following description, the vehicle length direction is referred to as the X direction, the vehicle width direction is referred to as the Y direction, and the vehicle height direction is referred to as the Z direction. Further, the direction of the arrow on the X-axis (direction toward the front of the vehicle) may be referred to as the + X direction, and the opposite direction may be referred to as the −X direction. Further, the direction of the arrow on the Y axis (direction toward the outside of the vehicle) may be referred to as the + Y direction, and the opposite direction (direction toward the inside of the vehicle) may be referred to as the −Y direction. Further, the direction of the arrow on the Z axis (the direction toward the upper side in the height direction) may be referred to as the + Z direction, and the opposite direction may be referred to as the −Z direction.

1A and 1B show a vehicle door handle device (hereinafter referred to as "handle device") 10 according to an embodiment of the present invention. The steering wheel device 10 includes a steering wheel 20 attached to an outer panel (door panel) 1 of a vehicle door, and an antenna unit 30 built in the steering wheel 20.

(Overview of the system)
As shown in FIG. 5, the handle device 10 constitutes one system that cooperates with the door lock device 2. This system includes a control device 4. The control device 4 is composed of a single or a plurality of ECUs (Electronic Control Units) and other electronic devices. The control device 4 includes an antenna control unit 5, an authentication processing unit 6, a determination unit 7, and a door lock device control unit 8.

The antenna control unit 5 drives the antenna 40 to execute communication with the electronic key (portable device) 9.

The authentication processing unit 6 authenticates the electronic key 9 based on the communication result with the electronic key 9 by the antenna 40 received from the antenna control unit 5.

The determination unit 7 drives a sensor control unit 81, which will be described later, to control three types of sensors, that is, an unlock sensor 50, a lock sensor 60, and an auxiliary sensor 70. Further, the determination unit 7 executes a determination based on the determination result received from the sensor control unit 81. The determination unit 7 has a storage unit 7a for storing the determination result. The sensor control unit 81 is driven by the determination unit 7 receiving a signal indicating that the engine has stopped. The drive of the sensor control unit 81 may be further performed when the transmission is set to parking while the engine is running.

The door lock device control unit 8 outputs a control signal based on the authentication result received from the authentication processing unit 6 and the determination result received from the determination unit 7, and controls the operation of the door lock device 2.

(Overview of handle)
As shown in FIGS. 1A and 1B, the handle 20 has a tubular shape that is long in the X direction as a whole. The handle 20 includes a handle body 22 made of synthetic resin and a handle cover 25 fixed to the handle body 22. The handle body 22 is provided with an arm 23 at an end in the + X direction and an actuating portion 24 at the end in the −X direction. The operating unit 24 is connected to the door lock device 2 arranged inside the vehicle door by a rod 3.

The plate-shaped portion of the handle body 22 that is long in the X direction is the inner wall 22a of the handle 20 that faces the outer panel 1. The handle cover 25 includes an outer wall 25a located on the opposite side (+ Y direction) of the outer panel 1 with respect to the inner wall 22a. An upper wall 25b is provided at the upper end of the outer wall 25a in the Z direction so as to project in the −Y direction toward the inner wall 22a and close the upper end of the outer wall 25a and the upper end of the inner wall 22a. At the lower end of the outer wall 25a in the Z direction, a lower wall 25c that projects in the −Y direction toward the inner wall 22a and closes the lower end of the outer wall 25a and the lower end of the inner wall 22a is provided. Side walls 25d and 25d projecting in the −Y direction toward the outer surface of the outer panel 1 are provided at both ends of the outer wall 25a in the X direction. The inner wall 22a, the outer wall 25a, the upper wall 25b, and the lower wall 25c form a hollow grip portion 26 gripped by the user, and the antenna unit 30 is arranged in the space 21 inside the grip portion 26.

When the user grasps the handle 20 and pulls it in the + Y direction to open the door, the handle 20 rotates about the tip of the arm 23 with respect to the outer panel 1. This rotation causes the operating portion 24 to move in the + Y direction, so that the receiving portion 3a of the rod 3 moves in the + Y direction, and the door is opened when the door lock device 2 is in the unlocked state. When the user releases the handle 20, the handle 20 returns to the state shown in FIG. 1B due to the urging force of a spring (not shown).

(Overview of antenna unit)
As shown in FIGS. 3A to 4, the antenna unit 30 includes an antenna 40, an unlock sensor (first sensor) 50, a lock sensor (third sensor) 60, an auxiliary sensor (second sensor) 70, and a circuit board 80. To be equipped with.

With reference to FIG. 5, the antenna 40 is electrically connected to the control device 4 by the electric wire 41. The antenna 40 is driven by the antenna control unit 5 of the control device 4, transmits an authentication code request signal to the electronic key 9 owned by the user, and transmits the authentication code received from the electronic key 9 to the antenna control unit 5. Send to. The antenna 40 is driven by the user approaching or touching the handle 20. The antenna 40 may be driven every time a set time elapses.

Referring to FIGS. 3A to 4, the unlock sensor 50 is for detecting the unlocking operation of the door lock device 2 by the user, and the first drive electrode 51 and the unlock electrode (first detection electrode) 55. It is composed of. The lock sensor 60 is for detecting the locking operation of the door lock device 2 by the user, and is composed of a second drive electrode 61 and a lock electrode (second detection electrode) 65. The auxiliary sensor 70 is for determining whether to enable or disable the detection result of the unlock sensor 50 and the detection result of the lock sensor 60, and the first drive electrode 51 common to the unlock sensor 50. And a surface electrode (auxiliary detection electrode) 71. That is, the first drive electrode 51 of the unlock sensor 50 also functions as an auxiliary drive electrode of the auxiliary sensor 70. Since the auxiliary sensor 70 and the unlock sensor 50 have a common first drive electrode 51, the structure of the antenna unit 20 can be simplified and downsized. The auxiliary sensor 70 has a shielding function described later.

The sensors 50, 60, and 70 are mutual capacitance type proximity sensors. The pair of electrodes 51 and 55 of the unlock sensor 50 constitute one capacitor. The pair of electrodes 61 and 65 of the lock sensor 60 constitute one capacitor. The pair of electrodes 51, 71 of the auxiliary sensor 70 constitutes one capacitor. The sensor control unit 81 applies a pulse voltage to one of the electrode pairs of each sensor 50, 60, 70, thereby generating an electric field between the electrode pairs and inducing a voltage (induced voltage) on the other electrode pair. In the unlock sensor 50 and the auxiliary sensor 70, a pulse voltage is applied to the first drive electrode 51. In the lock sensor 60, a pulse voltage is applied to the second drive electrode 61. When the user's hand approaches or comes into contact with the grip portion 26, the number of lines of electric force of the electric field between the electrode pairs decreases in each of the sensors 50, 60, and 70, and the induced voltage generated in the other of the electrode pairs decreases. Specifically, in the unlock sensor 50, the induced voltage generated in the unlock electrode 55 decreases. Further, in the lock sensor 60, the induced voltage generated in the lock electrode 65 decreases. Further, in the auxiliary sensor 70, the induced voltage generated in the surface electrode 71 decreases.

As shown in FIGS. 4 and 5, the circuit board 80 generates an electric field between the electrode pairs of the individual sensors 50, 60, 70, and changes in the electric field between the electrode pairs of the individual sensors 50, 60, 70. A sensor control unit 81 for determining whether or not the user is approaching is provided based on the above. The sensor control unit 81 drives the sensors 50, 60, 70, detects the induced voltage of the sensors 50, 60, 70, and makes a judgment based on the detected voltage (detection result) (which sensor 50, 60, 70 is in contact with). Or) and execute. Specifically, if the detection voltage of each of the sensors 50, 60, 70 is equal to or less than a predetermined threshold value, the sensor control unit 81 determines that the user's hand is approaching or touching the handle 20, and the threshold value is determined. If it exceeds, it is judged that the user's hand is not detected. An electric wire 82 for communicably connecting to the determination unit 7 of the control device 4 is electrically connected to the circuit board 80. The determination result by the sensor control unit 81 is sent to the determination unit 7 of the control device 4.

Referring to FIG. 5, the determination unit 7 of the control device 4 unlocks the door lock device 2 by referring to the determination result received from the sensor control unit 81 and the history of the determination result stored in the storage unit 7a. Determine whether to set the locked state, the locked state, or the state maintained (the current unlocked state or the locked state is maintained). This determination result is sent to the door lock device control unit 8.

The door lock device control unit 8 receives the determination result from the determination unit 7, that is, the door lock device 2 is based on the determination result of whether the door lock device 2 should be set to the unlocked state, the locked state, or the state maintenance. To operate. The door lock device control unit 8 sets the door lock device 2 in an unlocked state in which the vehicle door can be opened if the determination result of the determination unit 7 is an unlocking operation. Further, the door lock device control unit 8 sets the door lock device 2 in a locked state in which the vehicle door cannot be opened if the determination result of the determination unit 7 is a locking operation. Further, if the determination result of the determination unit 7 is to maintain the state, the control device 4 maintains the current unlocked or locked state of the door lock device 2.

As shown in FIG. 2, the components of the antenna unit 30, that is, the antenna 40, the first drive electrode 51, the unlock electrode 55, the second drive electrode 61, the lock electrode 65, the surface electrode 71, and the circuit board 80 are molded. It is integrated by the resin portion 31 formed by molding. Referring to FIGS. 3A-4, the individual electrodes 51, 55, 61, 65, 71 are formed by pressing a metal plate. Details of the shapes of the electrodes 51, 55, 61, 65, 71 will be described later.

(Arrangement of components of the antenna unit)
Referring to FIG. 1B, the antenna 40 has an elongated rod shape in the X direction, that is, in the longitudinal direction of the grip portion 26, and is arranged substantially in the center of the space 21 in the grip portion 26 in the X direction. Referring to FIGS. 3A to 4, the antenna 40 includes an inner portion 45 (including an inner surface) facing the inner wall 22a of the grip portion 26 and an outer portion 46 (including an outer surface) facing the outer wall 25a of the grip portion 26. ) And.

Referring to FIG. 1B, the circuit boards 80 are arranged side by side with respect to the antenna 40 in the longitudinal direction of the grip portion 26 so as to be located at a predetermined interval in the −X direction of the antenna 40. Referring to FIGS. 3A to 4, the circuit board 80 has an inner portion 83 (including an inner side surface) facing the inner wall 22a of the grip portion 26 and an outer portion 84 (outer surface) facing the outer wall 25a of the grip portion 26. Includes).

As shown in FIG. 1B, the unlock sensor 50 is arranged so that a part of the door opening operation is an unlocking operation of the door lock door lock device 2. That is, since the user grips the grip portion 26 during the door opening operation, the unlock sensor 50 is arranged on the inner wall 22a side in the grip portion 26.

Referring to FIGS. 3A to 4 together, both the first drive electrode 51 and the unlock electrode 55 constituting the unlock sensor 50 have an elongated shape in the X direction, that is, in the longitudinal direction of the grip portion 26 as a whole. Then, it is arranged on the inner wall 22a side in the grip portion 26 so as to extend from the center of the grip portion 26 toward the vicinity of the end portion in the −X direction. The unlock electrode 55 is arranged so as to face the first drive electrode 51 at a predetermined interval in the + Z direction. The first drive electrode 51 is fixed to the inner portion 45 of the antenna 40 by one end side in the X direction, that is, the main fixing portion 52 described later, and the other end side in the X direction, that is, the sub-fixing portion 53 described later, of the circuit board 80. It is fixed to the inner portion 83. Similarly, the unlock electrode 55 is fixed to the antenna 40 on one end side, that is, the main fixing portion 56 described later, and fixed to the inner portion 83 of the circuit board 80 on the other end side, that is, the sub fixing portion 53 described later. ..

As shown in FIG. 1B, the lock sensor 60 is arranged on the outer wall 25a side in the grip portion 26 so that it can detect that the outer surface of the grip portion 26 is touched during the door closing operation. Referring to FIGS. 3A to 4 together, both the second drive electrode 61 and the lock electrode 65 constituting the lock sensor 60 have an elongated shape in the X direction, that is, in the longitudinal direction of the grip portion 26, and the circuit board 80. It is mounted on the outer portion 84 of the.

As described above, the auxiliary sensor 70 is composed of a first drive electrode 51 common to the unlock sensor 50 and a surface electrode 71. As a whole, the surface electrode 71 is wider in the Z direction than the first drive electrode 51, the unlock electrode 55, the second drive electrode 61, and the lock electrode 65. Referring to FIG. 1B, the surface electrode 71 is arranged on the outer wall 25a side in the grip portion 26 so as to be located substantially in the center of the grip portion 26 in the X direction. The surface electrode 71 is arranged so as to face the first drive electrode 51 and the unlock electrode 55 at intervals in the + Y direction. Further, the surface electrodes 71 are arranged at intervals from the second drive electrode 61 and the lock electrode 65 in the longitudinal direction of the grip portion 26, specifically, in the + X direction. The surface electrode 71 is fixed to the outer end 46 of the antenna 40 by one end side in the X direction, that is, the first sensing portion 72 (which also functions as the main fixing portion) described later, and the other end side in the X direction, that is, the sub It is fixed to the inner portion 83 of the circuit board 80 by the fixing portion 73.

The main fixing portion 52 of the first drive electrode 51 and the main fixing portion 56 of the unlock electrode 55 are fixed to the inner portion 45 of the antenna 40, and the first sensing portion 72 of the surface electrode 71 is fixed to the outer portion 46 of the antenna 40. Has been done. The first drive electrode 51, the unlock electrode 55, and the surface electrode 71 sandwich the antenna 40. Further, the sub-fixing portion 53 of the first drive electrode 51, the sub-fixing portion 57 of the unlock electrode 55, and the sub-fixing portion 73 of the surface electrode 71 are fixed to the circuit board 80. That is, the circuit board 80 is fixed to the three electrodes 51, 55, 71 fixed to the antenna 40 so as to sandwich the antenna 40. Therefore, the mechanical connection strength of the circuit board 80 with respect to the antenna 40 can be improved as compared with the case where the antenna 40 and the circuit board 80 are connected with only one electrode.

Referring to FIG. 3A, the end of the wire 82 is fixed to the circuit board 80. Referring to FIG. 3B, the electric wire 82 extends from the circuit board 80 in the + X direction and is arranged along the antenna 40.

(antenna)
Referring to FIGS. 3A to 4, the antenna 40 includes a bobbin 43 in which a coil 42 is wound around an outer peripheral portion, and an elongated rod-shaped ferrite bar 44 housed inside the bobbin 43. The antenna 40 includes an inner portion 45 facing the inner wall 22a of the grip portion 26 and an outer portion 46 facing the outer wall 25a of the grip portion 26.

The bobbin 43 is made of an insulating material. On the inner side 45 side and the outer side 46 side of the bobbin 43, openings 43a reaching the inner ferrite bar 44 are formed, respectively. Fixing holes 43c, 43d, 43e for fixing the unlock sensor 50 and the auxiliary sensor 70 are provided on both side portions 43b of the bobbin 43, respectively. As most clearly shown in FIG. 4, the first fixing hole 43c is provided at the end of the bobbin 43 in the −X direction. The first fixing hole 43c fixes both the unlock sensor 50 and the auxiliary sensor 70 (see FIG. 8C), and is penetrated in the Y direction. The second fixing holes 43d are provided at predetermined intervals in the + X direction with respect to the first fixing holes 43c. The second fixing hole 43d fixes only the unlock sensor 50, and the end portion in the −Y direction is opened and the end portion in the + Y direction is closed. The third fixing hole 43e is provided at a predetermined interval in the + X direction with respect to the second fixing hole 43d, and is located at a portion substantially half of the total length of the bobbin 43. The third fixing hole 43e fixes only the auxiliary sensor 70, and the end portion in the + Y direction is opened and the end portion in the −Y direction is closed. Although FIG. 4 shows only the side portion 43b located in the −Z direction, the side portions 43b located in the + Z direction are also provided with fixing holes 43c, 43d, 43e.

(Circuit board)
Referring to FIGS. 3A to 4, the circuit board 80 is formed with an oscillation circuit unit 88 and an amplifier circuit unit 89 by a large number of elements 85, and a sensor control unit 81 is mounted on the circuit board 80. As described above, the sensor control unit 81 drives the unlock sensor 50, the lock sensor 60, and the auxiliary sensor 70, and is composed of a microcomputer. Specifically, the sensor control unit 81 is driven by the determination unit 7 of the control device 4, and has a first drive electrode 51 common to the unlock sensor 50 and the auxiliary sensor 70, and a second drive electrode of the lock sensor 60. A drive voltage is applied to 61 by the oscillation circuit unit 88. Further, the sensor control unit 81 detects the induced voltage (amplification voltage) of the unlock sensor 50, the lock sensor 60, and the auxiliary sensor 70 amplified by the amplifier circuit unit 89, and the individual sensors 50 are based on the detected voltage. , 60, 70 is determined whether or not the user is approaching. Further, the sensor control unit 81 outputs the determination results of the individual sensors 50, 60, 70 to the determination unit 7 of the control device 4.

As shown most clearly in FIG. 4, the circuit board 80 is provided with through-hole portions 86a to 86i and pads 87a and 87b that form a part of the oscillation circuit portion 88 and the amplifier circuit portion 89. Three through-hole portions 86a, 86b, 86c and two pads 87a, 87b are provided at the end portion of the circuit board 80 in the + X direction, that is, the end portion close to the antenna 40. Further, four through-hole portions 86d, 86e, 86f, and 86g are provided at the end portion of the circuit board 80 in the −X direction, that is, the end portion far from the antenna 40. Further, two through-hole portions 86h and 86i are provided adjacent to the three through-hole portions 86a to 86c. The through-hole portions 86a to 86c and 86d to 86i penetrate the circuit board 80. The pads 87a and 87b are provided on the outer side portion 84 of the circuit board 80.

As will be described later, the through-hole portions 86a to 86i refer to the oscillation circuit portion 88 and the amplification circuit portion 89 of the electrodes 51, 55, 61, 65, 71 constituting the unlock sensor 50, the lock sensor 60, and the auxiliary sensor 70. It is used for electrical connection and mechanical fixation of these electrodes 51, 55, 61, 65, 71 to the circuit board 80. The wires of the two electric wires 82 and 82 are soldered to the pads 87a and 87b, whereby an electrical connection between the sensor control unit 81 and the determination unit 7 of the control device 4 is established.

(Unlock sensor electrode)
As described above, the unlock sensor 50 is composed of the first drive electrode 50 and the unlock electrode 55.

Referring to FIGS. 3B and 4, the first drive electrode 51 includes a main fixing portion 52 fixed to the inner portion 45 of the antenna 40 and a sub-fixing portion 53 fixed to the inner portion 83 of the circuit board 80. ..

The main fixing portion 52 includes an inner wall 22a of the grip portion 26, a base portion (first base portion) 52a arranged along the inner portion 45 of the antenna 40, and two main fixing portions 52a protruding from the base portion 52a toward the antenna 40 in the + Y direction. It includes fixed pieces 52b and 52c. The fixed piece 52b is press-fitted into the fixing hole 43c located in the + Z direction of the antenna 40, and the fixed piece 52c is press-fitted into the fixing hole 43d located in the + Z direction of the antenna 40 so that the main fixing portion 52 is inside the antenna 40. It is fixed to the portion 45.

The sub-fixing portion 53 is connected to the main fixing portion 52 and projects from the antenna 40 in the −X direction along the longitudinal direction of the grip portion 26. The sub-fixing portion 53 is provided so as to project from the inner wall 22a of the grip portion 26, the base portion (second base portion) 53a arranged along the inner portion 83 of the circuit board 80, and the base portion 53a toward the circuit board 80 in the + Y direction. It is provided with two terminals 53b and 53c. The terminal 53b is inserted into the through-hole portion 86b of the circuit board 80 and soldered, and the terminal 53c is inserted into the through-hole portion 86d of the circuit board 80 and soldered so that the first drive electrode 51 becomes the oscillation circuit portion. It is electrically connected to 88, and the sub-fixing portion 53 is fixed to the inner portion 83 of the circuit board 80. In the present embodiment, both the terminal 53b and the terminal 53c are soldered, but only one of them may be soldered. Further, only one of the terminal 53b and the terminal 53c may be electrically connected.

At the end of the main fixing portion 52 in the + Z direction, a sensing portion 52d projecting in the −Y direction toward the inner wall 22a of the grip portion 26 is provided. Further, at the end of the sub-fixing portion 53 in the + Z direction, a sensing portion 53d projecting in the −Y direction toward the inner wall 22a of the grip portion 26 is provided. The sensing unit 52d and the sensing unit 53d are arranged on the same XY plane. Referring to FIG. 2, the sensing portions 52d and 53d project from the resin portion 31 of the antenna unit 30. Referring to FIG. 1B together, the tips (−Y direction edge) 52e and 53e of the sensing portions 52d and 53d have a shape along the inner surface of the inner wall 22a of the grip portion 26.

The unlock electrode 55 has a shape substantially mirror-symmetrical to the first drive electrode 51, and includes a main fixing portion 56 fixed to the antenna 40 and a sub-fixing portion 57 fixed to the circuit board 80.

Similar to the main fixing portion 52 of the first drive electrode 51, the main fixing portion 56 includes a base portion (first base portion) 56a arranged along the inner wall 22a of the grip portion 26 and the inner portion 45 of the antenna 40, and the base portion 56a. It is provided with two fixing pieces 56b and 56c protruding from the antenna 40 in the + Y direction. The fixed piece 56b is press-fitted into the fixing hole 43c of the antenna 40, and the fixing piece 56c is press-fitted into the fixing hole 43d located in the −Z direction of the antenna 40, so that the main fixing portion 56 is positioned in the −Z direction of the antenna 40. It is fixed to the inner portion 45 to be used.

Similar to the sub-fixing portion 53 of the first drive electrode 51, the sub-fixing portion 57 includes an inner wall 22a of the grip portion 26, a base portion (second base portion) 57a arranged along the inner portion 83 of the circuit board 80, and a base portion. It includes two terminals 57b and 57c projecting from 57a toward the circuit board 80 in the + Y direction. The terminal 57b is inserted into the through-hole portion 86c of the circuit board 80 and soldered, and the terminal 57c is inserted into the through-hole portion 86g of the circuit board 80 and soldered. Then, when either the terminal 57b or the terminal 57c is electrically connected, the unlock electrode 55 is electrically connected to the amplifier circuit section 89, and the sub-fixing section 57 is connected to the inner portion 83 of the circuit board 80. Is fixed to.

Sensing portions 56d and 57d are provided in the main fixing portion 56 and the sub-fixing portion 57. The sensing units 56d and 57d face the sensing units 52d and 53d of the first drive electrode 51 in the Z direction. Referring to FIG. 1B, the tips 56e and 57e of the sensing portions 56d and 57d have a shape along the inner surface of the inner wall 22a of the grip portion 26.

(Lock sensor electrode)
As described above, the lock sensor 60 is composed of the second drive electrode 61 and the lock electrode 65.

As shown in FIG. 1B, the second drive electrode 61 is mounted on the outer portion 84 on the circuit board 80 side and is arranged on the outer wall 25a side in the grip portion 26. The arrangement position of the grip portion 26 of the second drive electrode 61 in the longitudinal direction is the end portion of the grip portion 26 in the −X direction, and the operating portion 24 of the handle 20 projects in the −Y direction at this arrangement position. That is, the second drive electrode 61 is arranged at a position where it is difficult for the user's hand to approach because of the operating portion 24 when the user grips the grip portion 26 during the door opening operation. Referring to FIGS. 3A and 4 together, the second drive electrode 61 includes a sensing portion 61a arranged along the outer wall 25a in the grip portion 26. Referring to FIG. 2, the sensing portion 61a is exposed from the opening 31a of the resin portion 31 of the antenna unit 30.

Two fixing portions 62a and 62b are provided at both ends of the sensing portion 61a in the X direction so as to project in the −Y direction toward the circuit board 80. Terminals 63a and 63b are provided so as to project from the individual fixing portions 62a and 62b, respectively. The terminal 63a is fixed by inserting it into the through-hole portion 86h of the circuit board 80, and the terminal 63b is inserted into the through-hole portion 86e of the circuit board 80 and soldered, so that the second drive electrode 61 is oscillated by the terminal 63b. It is electrically connected to the unit 88. In this way, the fixing portions 62a and 62b are fixed to the outer portion 84 of the circuit board 80. Further, a positioning hole 61b for fixing the antenna unit 30 to the mold at the time of molding is formed at the edge of the sensing portion 61a in the −Z direction. A positioning hole 61b for fixing the antenna unit 30 to the handle 20 is formed.

The lock electrode 65 is mounted on the outer side 84 side of the circuit board 80, and is arranged on the outer wall 25a side in the grip portion 26. The lock electrodes 65 are arranged at intervals in the Z direction with respect to the second drive electrode 61. The lock electrode 65 has a shape that is substantially mirror-symmetrical to the second drive electrode 61, but specifically, the shape is changed to a shape different from that of the second drive electrode 61 according to the space 21 in the grip portion 26. .. The lock electrode 65 includes a sensing portion 65a, a fixing portion 66a, 66b, terminals 67a, 67b, and a positioning hole 65b at the time of molding.

The terminal 67a is fixed by inserting it into the through-hole portion 86i of the circuit board 80, and the terminal 67b is inserted into the through-hole portion 86f of the circuit board 80 and soldered. Is electrically connected to. As a result, the fixing portions 66a and 66b are fixed to the outer portion 84 of the circuit board 80. Referring to FIG. 2, the sensing portion 65a is exposed from the opening 31a of the resin portion 31 of the antenna unit 30.

(Auxiliary sensor electrode)
As described above, the auxiliary sensor 70 is composed of a first drive electrode 50 common to the unlock sensor 50 and a surface electrode 71.

As shown in FIG. 1B, the surface electrode 71 is arranged on the outer wall 25a side in the grip portion 26 so as to be located substantially in the center of the grip portion 26 in the X direction. With reference to FIGS. 3A and 4, the surface electrode 71 includes a first sensing portion 72 (main fixing portion), a sub-fixing portion 73, and two second sensing portions 74.

Referring to FIGS. 3A, 4 and 7, the first sensing portion 72 is a rectangular plate-shaped base extending in an XZ plane covering approximately half the region of the outer portion 46 of the antenna 40. The first sensing unit 72 faces the first drive electrode 51 and a part of the unlock electrode 55 in the Y direction. Specifically, the first sensing unit 72 faces the main fixing unit 52 (the sensing unit 52d is provided) of the first drive electrode 51 included in the unlock sensor 50 in the Y direction. Further, in the first sensing unit 72, the main fixing portion 56 (provided with the sensing portion 56d) of the unlock electrode 55 included in the unlock sensor 50 also faces in the Y direction. With reference to FIG. 7, the dimensions of the first sensing portion 72 in the X direction (longitudinal direction of the grip portion 26), that is, the length L and the dimensions in the Z direction (vertical direction), that is, the width W are the first drive electrodes. It is set so that the main fixing portion 52 of the 51 and the main fixing portion 56 of the unlock electrode 55 can be opposed to each other. In addition to the antenna 40, a first sensing portion 72 is interposed between the main fixing portion 52 of the first drive electrode 51 and the outer wall 25a of the grip portion 26. Further, in addition to the antenna 40, a first sensing portion 72 is interposed between the main fixing portion 56 of the unlock electrode 55 and the outer wall 25a of the grip portion 26. Referring to FIG. 2, the first sensing portion 72 is exposed from the opening 31b of the resin portion 31 of the antenna unit 30.

Referring to FIG. 7, the first sensing unit 72 is provided with a pair of fixed pieces 72a, 72a projecting in the −Y direction near the end portion in the −X direction, and projecting in the −Y direction at the end portion in the X direction. A pair of fixed pieces 72b and 72b are provided. As shown in FIG. 8C, the fixing piece 72a is press-fitted into the fixing hole 43c of the antenna 40, and the fixing piece 72b is press-fitted into the fixing hole 43e of the antenna 40, so that the first sensing portion 72 is pressed into the fixing hole 43e of the antenna 40, so that the first sensing portion 72 is pressed into the outer portion 46 of the antenna 40. Is fixed to.

As shown in FIGS. 3A, 4 and 7, the sub-fixing portion 73 is provided at the end of the first sensing portion 72 in the −X direction. The sub-fixing portion 73 is provided with a protruding portion 73a extending to the inner portion 83 of the circuit board 80. As most clearly shown in FIG. 4, the projecting portion 73a includes a first portion 73b projecting in the −Y direction and a second portion 73c projecting from the tip of the first portion 73b in the −X direction. A terminal 73d protruding in the + Y direction is formed at the tip of the second portion 73c. The terminal 73d is inserted into the through-hole portion 86a of the circuit board 80 and soldered so that the surface electrode 71 is electrically connected to the amplifier circuit portion 89 and the sub-fixing portion 73 is the inner portion of the circuit board 80. It is fixed to 83.

As shown in FIGS. 3B and 7, the second sensing unit 74 projects in the −Y direction from the upper edge, which is the end of the first sensing unit 72 in the + Z direction, toward the inner wall 22a of the grip portion 26. .. The second sensing portion 74 is located on the side portion 43b located in the + Z direction of the antenna 40, and is arranged along the upper wall 25b in the grip portion 26. The tips of the individual second sensing portions 74 face the main fixing portion 56 of the unlock electrode 55 (where the sensing portion 56d is provided) at intervals in the Y direction.

With reference to FIGS. 1B, 3A, 3B, and 4, as described above, the two wires 82, 82 are soldered to the pads 87a, 87b provided on the outer side 84 of the circuit board 80. .. The electric wires 82 and 82 pass from the outer side portion 84 of the circuit board 80, through the + Z direction side portion 43b of the antenna 40 and the inner portion 45 of the antenna 40, and further from the + X direction end portion of the antenna unit 30 in the + X direction. Extends to. Since it is such a routing path, the electric wires 82 and 82 do not pass between or near the first drive electrode 51 and the unlock electrode 55 constituting the unlock sensor 50. From the end of the antenna unit 30 in the + X direction, two electric wires 41 and 41 of the antenna 40 extend in the + X direction together with the electric wires 82 and 82. The four electric wires 41, 41, 82, 82 exit the steering wheel 26 and enter the vehicle door. Referring to FIG. 1B, a connector 90 for establishing an electrical connection with the control device 4 is provided at an end of the four electric wires 41, 41, 82, 82 in the vehicle door. In order to route the electric wires 82 and 82 as described above, hook portions (holding portions) 75a, 75b and 75c for holding the electric wires 82 and 82 are provided on the surface electrode 71 and are held by the bobbin 43 of the antenna 40. A plate portion (holding portion) 43f and a holding block portion (holding portion) 43h are provided.

Referring to FIGS. 3B and 7, the two hook portions 75a and 75c of the surface electrode 71 are provided in the second sensing portions 74 and 74. The hook portion 75b of the surface electrode 71 is provided on the edge portion of the first sensing portion 72 in the + X direction, that is, the upper edge portion. Displacement of the electric wires 82 and 82 is regulated by being held by these hook portions 75a to 75c. Specifically, the hook portions 75a and 75c cooperate with the second sensing portion 74 to regulate the displacements of the two electric wires 82 in the + Z direction, the −Z direction, and the −Y direction. The hook portions 75a and 75c are opened in the −Y direction to enable the arrangement of the electric wires 82 and 82. On the other hand, the hook portion 75b regulates the displacement of the two electric wires 82 in the + Z direction, the −Z direction, and the −Y direction in cooperation with the second sensing unit 74. The hook portion 75b is open in the + Y direction to allow the arrangement of the electric wire 82.

Referring to FIGS. 3B and 6, a pair of notches 43g and 43g opened in the −Y direction are formed in the holding plate portion 43f of the antenna 40. By arranging the electric wires 82 and 82 in the notch 43 g, the displacement in the + Z direction, the −Z direction, and the −Y direction is regulated. A pair of grooves 43i and 43i extending in the X direction and opening in the −Y direction are formed in the holding block portion 43h of the antenna 40. The electric wires 82 and 82 are detachably fixed to the holding block 43h by being housed in the grooves 43i and 43i.

One end of the electric wires 82 and 82 is soldered to the pads 87a and 87b of the circuit board 80, and the electric wires 82 and 82 are removably fixed to the holding block portion 43h near the end in the + X direction of the antenna 40. The electric wires 82 and 82 are held by the hook portions 75a to 75c and the holding plate portion 43e in the portion between the pads 87a and 87b and the holding block portion 43h. By this holding, the wiring path of the electric wires 82 and 82 described above is surely maintained even before the antenna unit 30 is used for molding for forming the resin portion 31.

In the portion between the pads 87a and 87b of the electric wires 82 and 82 and the holding block portion 43h, the hook portion 75a opened in the + Y direction, the hook portion 75b opened in the −Y direction, and opened in the + Y direction from the pads 87a and 87b side. The hook portion 75c and the holding plate portion 43e opened in the −Y direction are arranged in this order. In this way, the open directions of the elements holding the electric wires 82 and 82 are alternately alternated, so that the above-mentioned wiring route of the electric wires 82 and 82 is more reliably maintained.

Since the electric wires 82 and 82 are held by the hook portions 75a to 75c of the surface electrodes 71, the holding plate portion 43f of the antenna 40, and the holding block 43h, no additional parts are required to maintain the wiring path of the electric wires 82. is there. Therefore, the structure of the antenna unit 30 can be simplified, and an increase in manufacturing cost can be prevented.

(motion)
As described above, the sensor control unit 81 detects the induced voltage of the unlock sensor 50, the lock sensor 60, or the auxiliary sensor 70, and if the detected voltage is equal to or less than a predetermined threshold value, the user to the handle 20 It is determined that the user's hand is approaching or touching, and if the threshold value is exceeded, the user's hand is determined not to be detected. These determination results are stored in a storage unit (not shown) of the sensor control unit 81 and sent to the determination unit 7 of the control device 4.

As shown in Table 1, the determination unit 7 basically sets the door lock device 2 to any of the unlocked state, the locked state, and the state maintenance based on the current combination of the determination results by the sensor control unit 81. Decide if it should be. In Table 1, "L" indicates the establishment of the detection determination of the approach of the user's hand, and "H" indicates the establishment of the non-detection determination. The determination unit 7 should set the door lock device 2 to any of the unlocked state, the locked state, and the state maintenance based on which of the states 1 to 7 the combination of the current determination results by the sensor control unit 81 corresponds to. Judgment is made, and the judgment result is sent to the door lock device control unit 8.

In the states 1 and 2 of Table 1, the judgment result by the sensor control unit 81 based on the detection result by the unlock sensor 50 is “L”, and the judgment result by the sensor control unit 81 based on the detection result by the lock sensor 60 is “H”. ". In this case, the determination unit 7 determines that the user has executed the normal unlocking operation regardless of the determination result by the sensor control unit 81 based on the detection result by the auxiliary sensor 70, and puts the door lock device 2 in the unlocked state. Make a decision to set.

In the state 3 of Table 1, the judgment result by the sensor control unit 81 based on the detection result by the unlock sensor 50 is “H”, and the judgment result by the sensor control unit 81 based on the detection result by the lock sensor 60 is “L”. The determination result by the sensor control unit 81 based on the detection result by the auxiliary sensor 70 is “H”. In this case, the determination unit 7 determines that the user has executed the normal locking operation, and determines that the door lock device 2 is set to the locked state.

In the state 4 of Table 1, the judgment result by the sensor control unit 81 based on the detection result by the unlock sensor 50 is “H”, and the judgment result by the sensor control unit 81 based on the detection result by the lock sensor 60 is “L”. The determination result by the sensor control unit 81 based on the detection result by the auxiliary sensor 70 is “L”. In this case, the determination unit 7 determines that the user has made a mistake in the locking operation, and determines that the door lock device 2 is set to maintain the state.

In the states 5 and 6 of Table 1, the determination result by the sensor control unit 81 based on the detection result by the unlock sensor 50 and the lock sensor 60 is “L”. In this case, the determination unit 7 determines that the unlocking operation error is made by the user regardless of the determination result by the sensor control unit 81 based on the detection result by the auxiliary sensor 70, and determines that the door lock device 2 is set to maintain the state. To give.

In the state 7 of Table 1, only the judgment result by the sensor control unit 81 based on the detection result by the auxiliary sensor 70 is “L”, and the judgment result by the sensor control unit 81 based on the detection result by the unlock sensor 50 and the lock sensor 60 is Both are "H". In this case, the determination unit 7 determines that the user has made a mistake in the locking operation or that the user has unknowingly touched the steering wheel, and determines that the door lock device 2 is set to maintain the state.

The determination unit 7 unlocks, locks, and maintains the door lock device 2 based on the current combination and the past combination (stored in the storage unit 7a) of the determination result by the sensor control unit 81. In some cases, it may be decided which one should be set. Specifically, when any of the conditions 1 to 3 shown in Table 2 below is satisfied, the judgment unit 7 determines the judgment result for a predetermined number of references (for example, 10 times) including the current judgment result. The final decision as to which state to set the door lock device 2 is made with reference to the history of. Since each of the sensors 50, 60, and 70 repeats detection in a short time unit of 10 ms, the user's operation intention can be accurately determined by referring to the history of the determination results for a predetermined period.

In any of the conditions 1 to 3 in Table 2, the combination of the judgment results immediately before the current judgment result is that the judgment result by the sensor control unit 81 based on the detection results of the unlock sensor 50 and the lock sensor 60 is ". In "H", the determination result by the sensor control unit 81 based on the detection result of the auxiliary sensor 70 is "L". That is, only the auxiliary sensor 70 is the case where the determination of the approach of the user's hand is established.

Under condition 1, the combination of the current judgment results is the state 3 (locked state) in Table 1, and the combination of the immediately preceding judgment results is the state 7 (maintenance of the state) in Table 1. In this case, the determination unit 7 determines whether to set the door lock device 2 to the locked state or to maintain the state maintenance setting by referring to the history of the determination results for the number of references. Specifically, among the judgment results for the number of references, when the judgment result equal to or more than the predetermined set number of times (for example, 3 times) indicates the state 3, it is confirmed that the state 3 is set and the door lock device 2 is locked. Make a decision to set the state. On the other hand, when the judgment result for the number of references shows the state 3 less than the set number of times, the judgment unit 7 locks the door even though the current combination of the judgment results is the state 3. Make a decision to set the device 2 to maintain state.

In some cases, the user's hand unintentionally approaches the outer wall 25a side of the grip portion 26, and after the auxiliary sensor 70 determines that the user's hand is approaching, the lock sensor 60 determines that the user's hand is approaching. is there. That is, although the user has no intention of locking, the lock sensor 60 may determine that the user's hand is approaching. In this case, the history of the judgment result from the past to the present is referred to, and it is judged whether or not the user has the intention of locking from the transition of the judgment result, and it is judged whether the state 3 or the state 7 is decided. I do.

Specifically, after the state in which the judgment result of the auxiliary sensor 70 is "L" continues for a certain period of time, the judgment result of the auxiliary sensor 70 changes to "H", while the judgment result of the unlock sensor 50 is "H". The determination result of the lock sensor 60 changes from "H" to "L" while being maintained at "H". In this case, if the determination result of the auxiliary sensor 70 is maintained at "H", it can be determined that the user has an intention to lock. When the user's hand unintentionally approaches the outer wall 25a side of the grip portion 26, the determination result of approaching one of the auxiliary sensor 70 and the lock sensor 60 is intermittently generated. That is, the condition 1 is temporarily satisfied, the judgment result of the state 7 is continued, and the judgment result indicating the state 3 is less than the judgment result indicating the state 7. Therefore, the user's operation intention can be accurately determined by referring to the history of the determination result in the predetermined period and confirming the ratio between the determination result of the state 3 and the determination result of the state 7.

In condition 2, the combination of the current judgment results is the state 2 (unlocked state) in Table 1, and the combination of the immediately preceding judgment results is the state 7 (state maintenance) in Table 1. In this case, the determination unit 7 refers to the history of the determination results for the number of references, and if the determination result more than the predetermined set number of times indicates the state 2, the determination unit 7 determines to set the door lock device 2 to the unlocked state. If the state 2 is shown only as a result of determination less than the set number of times, the determination is made to set the door lock device 2 to maintain the state.

The user's hand or body may unintentionally approach the outer wall 25a side of the grip portion 26, and the auxiliary sensor 70 may determine that the user's hand is approaching. Further, from this state, the user's hand or body may unintentionally approach the unlock sensor 50, and the determination of the user's approach to the auxiliary sensor 70 and the unlock sensor 50 may be established. That is, although the user has no intention of unlocking, the unlock sensor 50 may determine that the user's hand is approaching. In this case, referring to the history of the judgment result from the past to the present, it is judged whether or not the user has the intention of unlocking from the transition of the judgment result, and which of the state 2 and the state 7 is decided. Make a decision.

Specifically, the determination result of the unlock sensor 50 changes from "H" to "L" while the determination result of the auxiliary sensor 70 is maintained at "L". In this case, even if the auxiliary sensor 70 is touched, it is highly likely that the user has consciously inserted his / her hand into the inner wall 22a side of the grip portion 26, so that it can be determined that the user has an intention to unlock. However, if the state immediately changes from this state to the state 7, the user may have an intention to unlock because there is a possibility that a false detection due to noise or the user unintentionally inserts a hand into the inner wall 22a side of the grip portion 26. It can be judged that there is no such thing. Therefore, the user's operation intention can be accurately determined by referring to the history of the determination result in the predetermined period and confirming the ratio between the determination result in the state 2 and the determination result in the state 7.

In condition 3, the combination of the current judgment results is the state 1 (unlocked state) in Table 1, and the combination of the judgment results up to the last time is the state 7 (state maintenance) in Table 1. In this case, the determination unit 7 refers to the history of the determination results for the number of references, and if the determination result more than the predetermined set number of times indicates the state 1, the determination unit 7 determines to set the door lock device 2 to the unlocked state. If the state 1 is shown only as a result of determination less than the set number of times, the determination is made to set the door lock device 2 to maintain the state.

The user's hand may unintentionally approach the outer wall 25a side of the grip portion 26, and the auxiliary sensor 70 may determine that the user's hand is approaching. Further, from this state, the user's hand or body may unintentionally approach the unlock sensor 50, and the determination of the user's approach may be established only for the unlock sensor 50. That is, although the user has no intention of unlocking, the unlock sensor 50 may determine that the user's hand is approaching. In this case, referring to the history of the judgment result from the past to the present, it is judged whether or not the user has the intention of unlocking from the transition of the judgment result, and which of the state 1 and the state 7 is decided. Make a decision.

Specifically, the judgment result of the auxiliary sensor 70 changes from "L" to "H", and the judgment result of the unlock sensor 50 changes from "H" to "L" while the judgment result of the lock sensor 60 is maintained. Changes to. In this case, it is highly possible that the hand is consciously inserted into the inner wall 22a side of the grip portion 26 as in the condition 2. However, if the state immediately changes from this state to the state 7, there is a possibility of erroneous detection due to noise. Therefore, the operation intention of the user can be accurately determined by referring to the history of the determination result in the predetermined period and confirming the ratio between the determination result of the state 1 and the determination result of the state 7.

As described above, the determination unit 7 determines whether or not the user's hand or body is approaching the unlock sensor 50 and the lock sensor 60, as well as the result of determining whether or not the user's hand is approaching the auxiliary sensor 70. Then, in consideration of the history of the determination result, it is determined what kind of state the door lock device 2 should be set to. Specifically, the determination unit 7 refers to the history of the determination result stored in the storage unit 7a when only the determination result by the auxiliary sensor 70 is “L” for a certain period of time or longer, and refers to the door lock device. Make the final decision as to which state to set 2. Therefore, the determination unit 7 can prevent a supposed erroneous determination and improve the determination accuracy of the unlocking operation and the locking operation.

Since the unlock sensor 50, the lock sensor 60, and the auxiliary sensor 70 are all mutual capacitance type proximity sensors, erroneous detection due to adhesion of rain or the like can be prevented, and high-sensitivity detection is possible.

The unlock sensor 50 is arranged on the inner wall 22a side in the grip portion 26, and the lock electrode 65 of the lock sensor 60 and the surface electrode 71 of the auxiliary sensor 70 are arranged on the outer wall 25a side in the grip portion 26. With these arrangements, the approach of the user's hand can be detected with high accuracy by the sensors 50, 60, 70.

The first drive electrode 51 and the unlock electrode 55 constituting the unlock sensor 50 include sensing portions 52d, 53d, 56d, 57d arranged along the inner surface of the inner wall 22a of the grip portion 26. Therefore, the unlock sensor 50 can detect with higher sensitivity that the user's hand approaches or comes into contact with the inner wall 22a of the grip portion 26.

The electric field generated between the first driving electrode 51 of the auxiliary sensor 70 and the first sensing portion 72 of the surface electrode 71 is the electric line of force of the electric field generated between the electrodes 51 and 55 of the unlock sensor 50, which is the grip portion 26. It has a shielding function to prevent it from going toward the outer wall 25a side. Further, the electric field in the Z direction generated between the electrodes 61 and 65 of the lock sensor 60 prevents the lines of electric force of the electric field generated between the electrodes 51 and 55 of the unlock sensor 50 toward the outer wall 25a side of the grip portion 26. It has a shielding function. Further, the outer wall 25a side of the unlock sensor 50 is generally covered with the electrodes 61 and 65 of the lock sensor 60 and the surface electrodes 71 of the auxiliary sensor 70. As a result, it is possible to prevent the unlock sensor 50 from erroneously detecting that the user's hand has approached or touched the outer wall 25a of the grip portion 26.

The electric field generated between the first drive electrode 51 of the auxiliary sensor 70 and the second sensing portion 74 and the hook portions 75a, 75b, 75c of the surface electrode 71 is the electric field generated between the electrodes 51 and 55 of the unlock sensor 50. It has a shielding function of preventing the electric lines of force from moving toward the upper wall 25b side of the grip portion 26. Therefore, it is possible to prevent the unlock sensor 50 from erroneously detecting that the user has approached or touched the upper wall 25b of the grip portion 26.

The electromagnetic field generated by the current flowing through the electric wire 82 affects the electric field between the electrodes 51 and 55 of the unlock sensor 50. However, the electric wire 82 is arranged so as not to pass near the unlock electrode 55 by the hook portions 75a, 75b, 75c for holding the surface electrode 71, and the holding plate portion 43f and the holding block portion 43h of the antenna 40. It is being searched. Therefore, it is possible to prevent a decrease in the detection accuracy of the unlock sensor 50 due to the influence of the electric wire 82.

(Antenna unit assembly work)
As shown in FIG. 8A, first, the first drive electrode 51 and the unlock electrode 55 are arranged on the inner portion 45 of the antenna 40, and the fixing pieces 52b, 52c, 56b, 56c are placed in the fixing holes 43c, 43c, 43d, 43d. Press in. As a result, the main fixing portion 52 of the first drive electrode 51 and the main fixing portion 56 of the unlock electrode 55 are fixed to the inner portion 45 of the antenna 40.

Then, as shown in FIG. 8B, the surface electrode 71 is arranged on the outer side portion 46 of the antenna 40, and the fixing pieces 72a, 72a, 72b, 72b are press-fitted into the fixing holes 43c, 43c, 43e, 43e. As a result, the first sensing portion 72, which is the main fixing portion of the surface electrode 71, is fixed to the outer portion 46 of the antenna 40.

As shown in FIG. 8C, a fixing piece 52b of the first drive electrode 51 and a fixing piece 72a of the surface electrode 71 are arranged in one of the fixing holes 43c and 43c of the antenna 40, and the unlocking electrode 55 is placed in the other. The fixed piece 56b and the fixed piece 72a of the surface electrode 71 are arranged. Further, the fixing piece 52c of the first drive electrode 51 is arranged in one of the fixing holes 43d and 43d of the antenna 40, and the fixing piece 56c of the unlock electrode 55 is arranged in the other. Fixing pieces 72b, 72b of the surface electrode 71 are arranged in the second fixing holes 43e, 43e of the antenna 40.

Next, as shown in FIG. 8D, the circuit board 80 is arranged on the sub-fixed portions 53, 57, 73 of the electrodes 51, 55, 71 fixed to the antenna 40. Then, the terminals 73d, 53b, 57b, 53c, 57c of the electrodes 51, 55, 71 are inserted into the through-hole portions 86a, 86b, 86c, 86d, 86g of the circuit board 80 from the inner portion 83 side and soldered. As a result, the first drive electrode 51 is electrically connected to the oscillation circuit section 88, and the sub-fixing section 53 of the first drive electrode 51 is fixed to the inner portion 80 of the circuit board 80. Further, the unlock electrode 55 and the surface electrode are electrically connected to the amplifier circuit portion 89 of the circuit board 80, and the sub-fixing portions 57 and 73 of the electrodes 55 and 71 are fixed to the inner portion 80 of the circuit board 80. Will be done.

After that, as shown in FIG. 8E, the core wires of the electric wires 82 and 82 are arranged on the pads 87a and 87b of the circuit board 80 and soldered. Then, as shown in FIG. 8F, the second drive electrode 61 and the lock electrode 65 are arranged on the outer side portion 84 of the circuit board 80. Then, the terminals 63a, 63b, 67a, 67b of the electrodes 61, 65 are inserted into the through-hole portions 86h, 86e, 86i, 86f of the circuit board 80, and the terminals 63b, 67b are soldered. As a result, the second drive electrode 61 is electrically connected to the oscillation circuit unit 88, and the fixing portions 62a and 62b of the second drive electrode 61 are fixed to the outer portion 84 of the circuit board 80. Further, the lock electrode 65 is electrically connected to the amplifier circuit portion 89 of the circuit board 80, and the fixing portions 66a and 66b of the lock electrode 65 are fixed to the outer portion 84 of the circuit board 80. Although only the terminals 63b and 67b are soldered, the terminals 63a and 67a may also be soldered.

Next, as shown in FIG. 3B, the electric wire 82 is arranged on the side portion 43b located in the + Z direction of the antenna 40, and the electric wires 82 and 82 are held by the hook portions 75a, 75b and 75c of the surface electrode 71. After that, the electric wires 82 and 82 are arranged on the inner portion 45 of the antenna 40, and the electric wires 82 and 82 are held by the holding plate portion 43f of the antenna 40. Finally, the electric wires 82 and 82 are fixed to the holding block portion 43h of the antenna 40.

The electrodes 61 and 65 constituting the lock sensor 60 are mounted on the outer portion 84 of the circuit board 80, and all the components of the antenna unit 30 can be handled in an integrated manner. Therefore, workability when arranging the antenna unit 30 in the mold at the time of molding can be improved.

The vehicle door handle device 10 of the present invention is not limited to the configuration of the above embodiment, and various modifications can be made.

The auxiliary sensor 70 may be composed of an auxiliary drive electrode different from the first drive electrode 51 of the unlock sensor 50 and a surface electrode 71.

Each of the sensors 50, 60, and 70 may be a self-capacity system in which the drive electrode and the detection electrode are composed of one electrode. In particular, by making the lock sensor 60 a self-capacitating type, the structure can be simplified. For example, of the second drive electrode 61 and the lock electrode 65, only the lock electrode 65 is arranged on the outer wall 25a side in the grip portion 26, and the transmission circuit portion 88 is electrically connected to the lock electrode 65. As a result, the number of parts arranged in the grip portion 26 can be reduced, so that the structure of the door handle device 10 can be simplified.

The handle device 10 may be configured only by the unlock sensor 50 and the auxiliary sensor 70 without arranging the lock sensor 60. The fixed structure of the electrodes 51 and 55 of the unlock sensor 50 with respect to the antenna 40 and the circuit board 80 can be changed as needed. Further, the fixed structure of the electrode 71 of the auxiliary sensor 70 with respect to the antenna 40 and the circuit board 80 can also be changed as needed.

The hook portions 75a, 75b, and 75c for arranging the electric wires 82 of the circuit board 80 may be provided on the lower edge of the first sensing portion 72 of the surface electrode 71 in the −Z direction. In this way, the electric field generated between the first drive electrode 51 and the hook portions 75a, 75b, 75c of the surface electrode 71 is located on the lower wall 25c side of the grip portion 26. Therefore, it is possible to prevent the electric field lines of the electric field generated between the electrodes 51 and 55 constituting the unlock sensor 50 from leaking to the lower wall 25c side of the grip portion 26.

The electrodes 51, 55, 61, 65, 71 and the electric wire 82 may be connected to the circuit board 80 by ultrasonic welding.

When the unlock sensor 50 or the lock sensor 60 detects the approach or contact of the user, the determination unit 7 refers to the history of the determination results for the number of references (constant time), and indicates which state the door lock device 2 is in. You may make the final decision on whether to set it to.

1 ... Outer panel 3 ... Rod 3a ... Receiving part 4 ... Control device 5 ... Antenna control unit 6 ... Authentication processing unit 7 ... Judgment unit 7a ... Storage unit 8 ... Door lock device control unit 9 ... Electronic key 10 ... Handle device 20 ... Handle 21 ... Space 22 ... Handle body 22a ... Inner wall 23 ... Arm 24 ... Acting part 25 ... Handle cover 25a ... Outer wall 25b ... Upper wall 25c ... Lower wall 25d ... Side wall 26 ... Grip part 30 ... Antenna unit 31 ... Resin part 31a, 31b ... Opening 40 ... Antenna 41 ... Electric wire 42 ... Coil 43 ... Bobbin 43a ... Opening 43b ... Sides 43c, 43d, 43e ... Fixing holes 43f ... Holding plate 43g ... Notch 43h ... Holding block (holding part)
43i ... Groove 44 ... Ferrite bar 45 ... Inner part 46 ... Outer part 50 ... Unlock sensor (first sensor)
51 ... 1st drive electrode 52 ... Main fixing part 52a ... Base part (1st base part)
52b, 52c ... Fixed piece 52d ... Sensing part 52e ... Tip 53 ... Sub-fixing part 53a ... Base (second base)
53b, 53c ... Terminal 53d ... Sensing unit 53e ... Tip 55 ... Unlocking electrode (first detection electrode)
56 ... Main fixing part 56a ... Base (first base)
56b, 56c ... Fixed piece 56d ... Sensing part 56e ... Tip 57 ... Sub-fixing part 57a ... Base (second base)
57b, 57c ... Terminal 57d ... Sensing unit 57e ... Tip 60 ... Lock sensor (third sensor)
61 ... Second drive electrode 61a ... Sensing unit 61b ... Positioning holes 62a, 62b ... Fixed parts 63a, 63b ... Terminal 65 ... Lock electrode (second detection electrode)
65a ... Sensing unit 65b ... Positioning holes 66a, 66b ... Fixed parts 67a, 67b ... Terminal 70 ... Auxiliary sensor (second sensor)
71 ... Surface electrode (auxiliary detection electrode)
72 ... 1st sensing part (main fixing part)
72a, 72b ... Fixed piece 73 ... Sub-fixing part 73a ... Protruding part 73b ... First part 73c ... Second part 73d ... Terminal 74 ... Second sensing part 75a, 75b, 75c ... Hook part (holding part)
80 ... Circuit board 81 ... Sensor control unit 82 ... Electric wire 83 ... Inner part 84 ... Outer part 85 ... Elements 86a to 86i ... Through hole part 87a, 87b ... Pad 88 ... Transmission circuit part 89 ... Amplifier circuit part 90 ... Connector

Claims (13)

A resin handle including a grip portion having an inner wall facing the door panel and an outer wall located on the opposite side of the inner wall from the door panel.
An antenna arranged in the grip portion and having an inner portion of the grip portion facing the inner wall and an outer portion of the grip portion facing the outer wall.
A first drive electrode arranged on the inner wall side in the grip portion and an electric field are generated between the first drive electrode arranged on the inner wall side in the grip portion so as to face the first drive electrode. A first sensor having one detection electrode and
A second sensor having an auxiliary detection electrode arranged on the outer wall side of the grip portion facing the first drive electrode and generating an electric field between the first drive electrode and the first drive electrode.
The first drive electrode, the first detection electrode, and the auxiliary detection electrode are electrically connected, and a sensor control unit that detects an electric field change between the first sensor and the second sensor is mounted in the grip portion. Equipped with an arranged circuit board,
The circuit board has an inner portion of the grip portion facing the inner wall and an outer portion of the grip portion facing the outer wall, and is arranged side by side with respect to the antenna in the longitudinal direction of the grip portion. Ori,
The first drive electrode and the first detection electrode are a main fixing portion fixed to the inner portion of the antenna and a sub-fixing portion protruding from the antenna in the longitudinal direction of the grip portion and fixed to the circuit board. And each
The auxiliary detection electrode is a vehicle door having a main fixing portion fixed to the outer portion of the antenna and a sub-fixing portion protruding from the antenna in the longitudinal direction of the grip portion and fixed to the circuit board. Handle device. The first sensor is an unlock sensor for detecting an unlocking operation.
The vehicle door handle device according to claim 1, wherein the second sensor is an auxiliary sensor for determining whether to enable or disable the detection result of the unlock sensor. The main fixing portion of the first driving electrode and the main fixing portion of the first detection electrode are a first base portion arranged along the inner portion of the antenna and projecting from the first base portion to the antenna. It has a fixed piece and a fixed piece, respectively.
The sub-fixing portion of the first drive electrode and the sub-fixing portion of the first detection electrode are a second base portion arranged along the inner portion of the circuit board, and the circuit projecting from the second base portion. The vehicle door handle device according to claim 1 or 2, each having a terminal fixed to a substrate by joining. The main fixing portion of the auxiliary detection electrode has a base portion arranged along the outer portion of the antenna and a fixing piece protruding from the base portion and fixed to the antenna.
The sub-fixed portion of the auxiliary detection electrode has a protruding portion arranged along the inner portion of the circuit board, and a terminal protruding from the protruding portion and fixed to the circuit board by joining. The vehicle door handle device according to any one of 1 to 3. The auxiliary detection electrode and the second drive electrode arranged at intervals in the longitudinal direction of the grip portion on the outer wall side in the grip portion, and the second drive electrode facing the outer wall side in the grip portion. It has a second detection electrode that is arranged and generates an electric field with the second drive electrode, and has a third sensor in which an electric field change is detected by the sensor control unit.
The vehicle door handle device according to any one of claims 1 to 4, wherein the second drive electrode and the second detection electrode each have a fixed portion fixed to the outer portion of the circuit board. .. The vehicle door handle device according to claim 5, wherein the third sensor is a lock sensor for detecting a locking operation. The vehicle door handle device according to claim 5 or 6, wherein the second drive electrode and the second detection electrode of the third sensor are mounted on the circuit board. The antenna has a bobbin around which a coil is wound and a ferrite bar housed in the bobbin.
The vehicle door handle device according to any one of claims 1 to 6, wherein the bobbin is provided with a holding portion for holding an electric wire connected to the circuit board. The grip portion has an upper wall that closes the upper end of the inner wall and the upper end of the outer wall.
The auxiliary detection electrode is
A first sensing portion that covers the outer portion of the antenna,
Any one of claims 1 to 8 having a second sensing portion that protrudes from the upper edge of the first sensing portion toward the inner wall of the grip portion and is arranged along the upper wall of the grip portion. The vehicle door handle device described in the section. The vehicle door handle device according to claim 9, wherein the auxiliary detection electrode has a holding portion for holding an electric wire connected to the circuit board. The vehicle door handle device according to claim 10, wherein the holding portion of the auxiliary detection electrode is formed on the upper edge of the first sensing portion. The vehicle door handle device according to any one of claims 1 to 11, wherein the first drive electrode and the first detection electrode each have a sensing portion that projects toward the inner wall of the grip portion. The vehicle door handle according to claim 12, wherein the tip of the sensing portion of the first drive electrode and the tip of the sensing portion of the first detection electrode have a shape along the inner surface of the inner wall of the grip portion. apparatus.

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