JP2008057237A - Opening/closing device for vehicle door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an opening/closing device for a vehicle door with less malfunction. <P>SOLUTION: The opening/closing device for the vehicle door 6 comprises a door handle 2 provided on an exterior side of the vehicle door 6 to open and close the vehicle door 6, a cable-shaped piezoelectric sensor provided inside the door handle 2 to detect a contact of a user with the door handle 2, an antenna 74 formed by winding the piezoelectric sensor around an outer periphery of a magnetic body to communicate with a portable device carried by the user, and a control means which recognizes the portable device existing within a predetermined range from the vehicle by communicating with the portable device and unlocks the vehicle door 6 when the contact of the user with the door handle 2 is detected in a state that the portable device is recognized. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicle door opening / closing device for unlocking a vehicle door.

  2. Description of the Related Art Conventionally, there is known a vehicle door opening / closing device provided with a locking system (smart entry system) that performs control to automatically unlock and lock a vehicle door. The smart entry system detects a user approaching or getting off the vehicle through communication with a portable device carried by the user, and recognizes and controls an unlocking or locking instruction for the user's vehicle door.

  As a vehicular door opening / closing device provided with such a smart entry system, there has been proposed a vehicular door opening / closing operation in which a detection electrode is provided on a door handle (see, for example, Patent Document 1). In this vehicle door opening and closing device, static electricity generated by inserting a user's hand between the detection electrode and the vehicle door using an electrostatic capacitance formed between the detection electrode and the vehicle door. Recognize user's instructions by detecting changes in capacitance.

  Further, as a means for recognizing a user's instruction, a vehicle door opening / closing device in which a handle operation detection sensor such as a piezoelectric sensor is provided on a movable portion of the door handle across the vehicle door and the door handle has been proposed ( For example, see Patent Document 2). In this apparatus, the deformation of the handle operation detection sensor due to the displacement of the door handle with respect to the vehicle door is detected to recognize the user's instruction.

JP 2002-295064 A JP 2005-98017 A

  However, in a vehicle door opening / closing device that detects a change in capacitance between the detection electrode provided on the door handle and the vehicle door, even if it is other than the user's hand, the detection electrode and the vehicle door are not connected. If there are air and medium constants different from each other, the capacitance changes. For this reason, there is a case in which a change in capacitance is detected even when the environment changes due to rain or the like. Further, since the door handle accommodates an antenna that communicates with the portable device carried by the user, together with the detection electrode, a high level technique for preventing the detection electrode and the antenna from interfering with each other is required.

  In a vehicle door opening / closing device in which a handle operation detection sensor is provided across the vehicle door and the door handle on the movable part of the door handle, there are usually many parts around the door handle of the vehicle door. It is difficult to secure a space for installing the operation detection sensor. In addition, since the handle operation detection sensor corresponding to the displacement of the door handle is arranged on the movable part of the door handle, there is a possibility of interference with other parts.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a vehicle door opening and closing device with few malfunctions.

  In order to achieve the above object, a first characteristic configuration of a vehicle door opening / closing device according to the present invention is provided outside a passenger compartment of a vehicle door, and performs a door opening / closing operation of the vehicle door; A cable-shaped piezoelectric sensor that is provided inside and detects contact of the user with the door handle, and an antenna that is formed by winding the piezoelectric sensor around the outer periphery of the magnetic body and communicates with a portable device carried by the user And the portable device existing in a predetermined range from the vehicle by communication with the portable device, and detecting contact of the user with the door handle in a state where the portable device is recognized And a control means for unlocking the vehicle door.

  In other words, according to this configuration, since the contact of the user with the door handle is detected by the piezoelectric sensor based on the mechanical external force applied to the door handle, the change in the environment such as rain can be prevented. It becomes difficult to detect, and malfunction can be prevented. Moreover, since the piezoelectric sensor is wound around the outer periphery of the magnetic body as an antenna, a space for providing the piezoelectric sensor is not required.

  According to a second characteristic configuration of the vehicle door opening and closing device according to the present invention, the door handle forms an internal space that accommodates the antenna between the handle body supported by the vehicle door and the handle body. A handle cover, wherein the handle body and the handle cover are configured to be relatively movable.

  In other words, according to this configuration, since the door handle is configured by the handle body and the handle cover that can move relative to each other, the mechanical external force when the user contacts the door handle is accommodated inside the door handle. It becomes easy to be transmitted to the piezoelectric sensor. Therefore, the detection sensitivity with respect to a user's contact with a door handle increases.

  A third characteristic configuration of the vehicle door opening and closing apparatus according to the present invention is that a contact portion that contacts the piezoelectric sensor is provided inside the door handle.

  That is, according to this structure, since the mechanical external force when a user contacts a door handle becomes easy to be transmitted to a piezoelectric sensor by a contact part, the detection sensitivity with respect to a user's contact to a door handle increases.

  According to a fourth characteristic configuration of the vehicle door opening and closing apparatus according to the present invention, the magnetic body includes a non-contact portion that does not contact the wound piezoelectric sensor, and the piezoelectric sensor disposed on the non-contact portion is disposed on the side of the magnetic body. Is provided with a pressing portion that can be pressed.

  In other words, according to this configuration, since the piezoelectric sensor is also easily displaced by the pressing from the pressing portion due to the mechanical external force when the user contacts the door handle, the detection sensitivity to the user's contact with the door handle Will increase.

  Hereinafter, an embodiment of a vehicle door opening and closing device according to the present invention will be described with reference to the drawings. Here, a case where the present invention is applied to a smart entry system will be described.

〔System configuration〕
As shown in FIG. 1, the smart entry system according to the present embodiment recognizes that a user (driver) carrying a portable device 5 called a remote controller has approached the vehicle or moved out of the passenger compartment. Then, unlocking and locking of the vehicle door 6 are automatically controlled. For example, when a user carrying the portable device 5 approaches the vehicle, the vehicle recognizes this approach, and when the user touches the door handle 2 to open the vehicle door 6, the user unlocks the vehicle. Recognizing the instruction, the vehicle door 6 is automatically unlocked.

  The portable device 5 carried by the user includes a receiving system 52 including an antenna and a tuner for receiving radio waves from the vehicle, and a transmission including an antenna and a modulation circuit for transmitting radio waves to the vehicle. The system 53 includes a signal processing CPU 51 that performs signal processing such as transmission / reception control, reception signal determination, and transmission signal generation.

  The vehicle interior 7 includes a system ECU (Electronic Control Unit) 1 as a control means for performing overall control of the smart entry system, a receiving antenna 75 for receiving a transmission signal from the portable device 5, and a received signal A tuner 71 that performs predetermined signal processing, a vehicle interior transmission antenna 73 that transmits a signal to the portable device 5, and a vehicle that performs signal processing such as modulation and amplification on a signal transmitted via the vehicle interior transmission antenna 73. An indoor driver 72 is provided.

  As shown in FIGS. 1 and 2, the door panel 60 outside the compartment of the vehicle door 6 is provided with a door handle 2 for opening and closing the vehicle door 6. The door handle 2 includes an out-of-vehicle transmission antenna 74 that transmits a signal to the portable device 5 that is an antenna according to the present invention, an unlocking operation detecting means 31 that detects a user's operation on the door handle 2, and a locking operation detecting means 32. Are provided. Inside the handle frame 8 that holds the door handle 2 on the vehicle door 6, there is provided a driver 9 outside the vehicle compartment that exchanges signals with each part provided on the door handle 2. Inside the door panel 60 of the vehicle door 6, a door actuator 62 that unlocks and locks by operating a lock (key) mechanism of the vehicle door 6 and a door ECU 61 that controls the door actuator 62 are provided. It is provided. The door ECU 61 and the vehicle exterior driver 9 are controlled by the system ECU 1.

  The system ECU 1 communicates with the portable device 5 via communication means provided in the vehicle interior 7 and the vehicle door 6. This communication is possible within a predetermined range from the vehicle, and the system ECU 1 recognizes that the portable device 5 exists within the predetermined range by establishing this communication. For example, if communication is established from a state where communication has not been established, the portable device 5 has moved from outside the predetermined range to within the predetermined range, that is, the user carrying the portable device 5 approaches the vehicle. Recognize what has been done.

[Configuration of each part]
As shown in FIG. 3, the door handle 2 is held by the handle frame 8 with the door panel 60 interposed therebetween. A handle cap 21 is held on the handle frame 8. The handle cap 21 is provided with a key cylinder 22 that is used when unlocking or locking the vehicle door 6 by manual mechanical key operation. A driver 9 outside the vehicle compartment is provided inside the handle frame 8, and is connected to each part of the door handle 2 and the system ECU 1 in the vehicle compartment via a wire harness 91.

  Inside the door handle 2 is an outside transmission antenna 74, an unlocking operation detecting means 31 for detecting a user unlocking instruction, and a locking operation detecting means 32 for detecting the locking instruction. is doing. As the locking operation detection means 32, a mechanical key switch, a capacitance type human detection sensor or the like is used. After the user gets off the vehicle and closes the vehicle door 6, the locking operation detection means 32 pushes or touches the outside of the door handle 2 with a finger or the like so that the locking instruction can be recognized. It is provided on the side (outside) that does not face the door panel 60 (the vehicle door 6). As shown in FIG. 4, the unlocking operation detecting means 31 uses a cable-like piezoelectric sensor 10, and the user's door is based on a mechanical external force applied to the door handle 2 such as a user's hand. A contact with the handle 2 is detected.

  As shown in FIG. 5, the vehicle exterior transmission antenna 74 is formed by winding a cable-shaped piezoelectric sensor 10 around the outer periphery of a ferrite 76 as a magnetic material. As shown in FIG. 4, the piezoelectric sensor 10 includes a first electrode 11 in which a conductor is wound around a conducting wire or an axis, and a tubular second electrode 12, and a piezoelectric body 13 is sandwiched between these electrodes. The whole is covered with a coating 14 and configured in the form of a coaxial cable. As the unlocking operation detecting means 31, the piezoelectric sensor 10 generates a charge due to a piezoelectric effect caused by strain generated in the piezoelectric body 13 due to mechanical external force such as acceleration, vibration, or contact, and outputs a voltage signal between the electrodes. . Transmission is performed via the second electrode 12 as the outside transmission antenna 74. That is, the second electrode 12 of the piezoelectric sensor 10 that is the unlocking operation detection means 31 also serves as the vehicle exterior transmission antenna 74. Since the piezoelectric sensor 10 is configured in the form of a coaxial cable, it can be detected in all directions in the radial direction and can be easily installed in a bent portion. For this reason, it can arrange | position favorably without impairing the function as the piezoelectric sensor 10 also on the outer periphery of the ferrite 76. FIG. When the piezoelectric sensor 10 detects contact of the user with the door handle 2, the mechanical external force is not necessarily applied to the portion of the piezoelectric sensor 10 wound around the outer periphery of the ferrite 76, and the door handle. If it is added to any part arranged in 2, it can be detected.

  In this way, by using the piezoelectric sensor 10 as the unlocking operation detection means 31, the user's unlocking instruction can be detected based on the mechanical external force applied to the door handle 2. For this reason, in the vehicle door opening and closing apparatus according to the present invention, erroneous detection is difficult due to environmental changes such as rain. Further, since the piezoelectric sensor 10 is wound around the outer periphery of the ferrite 76 and accommodated inside the door handle 2 as the outside transmission antenna 74, the piezoelectric sensor 10 is separately provided inside the door handle 2. Space is not required.

  In the present embodiment, as shown in FIGS. 2 and 3, the door handle 2 includes a handle main body 24 supported by the door panel 60 of the vehicle door 6 and a vehicle exterior transmission antenna 74 between the handle main body 24 and the like. And a handle cover 25 that forms an internal space 26 for housing the housing. The handle body 24 and the handle cover 25 are attached via an elastic body 23 such as rubber, and the handle body 24 and the handle cover 25 are configured to be relatively movable. Thereby, the handle cover 25 becomes a movable grip part, and when the user grips the door handle 2 or puts a hand on the door handle 2, the handle cover 25 is applied to the handle body 24. On the other hand, it moves relatively to the piezoelectric sensor 10 accommodated in the inside of the door handle 2 and transmits it well. Further, the handle body 24 and the handle cover 25 can be relatively moved in any direction. For this reason, not only in the case of the door handle 2 of the normal vehicle door 6, but also when applied to the door handle of a vehicle door such as a door handle of a sliding door, etc. The handle cover 25 moves relative to the handle main body 24 according to how the user's hand is hung, and can transmit to the piezoelectric sensor 10 that the user has touched the door handle 2.

  The door handle 2 does not necessarily have to be provided via the elastic body 23, and the handle main body 24 and the handle cover 25 can be relatively moved by other means. Even when the relative moving means is not actively provided, it can be detected by utilizing play at the initial stage of operation of the door handle 2 itself. Furthermore, the detection sensitivity can be increased by increasing the amplification factor of the detection signal from the piezoelectric sensor 10. The piezoelectric sensor 10 is preferably capable of detecting when a mechanical external force of at least about 1 N is applied to the door handle 2.

[Signal processing]
Next, an outline of signal processing in the above configuration will be described with reference to FIG. The driver 9 outside the passenger compartment includes a transmission amplifier 95 that transmits a radio signal to the portable device 5 as indicated by an arrow S2, a filter 92 that transmits a detection signal from the piezoelectric sensor 10 to the system ECU 1 as indicated by an arrow S1, and an amplifier 93 and a comparator 94.

  When a request signal is transmitted to the transmission amplifier 95 in response to a command from the system ECU 1, the request signal is modulated and amplified by the transmission amplifier 95, and is a piezoelectric element that is the vehicle exterior transmission antenna 74 in the vehicle door handle 2. It is transmitted as a radio wave to the outside of the vehicle via the second electrode 12 of the sensor 10.

  A detection signal from the piezoelectric sensor 10 is amplified and pulsed through a filter 92, an amplifier 93, and a comparator 94, and transmitted to the system ECU 1. Based on the detection signal transmitted to the system ECU 1, the determination unit 100 determines whether or not the door handle 2 is touched, whether or not the applied external force is a contact with the user's door handle 2, and the like. For example, when other mechanical external force is applied to the door handle 2 such as a collision with another object on the side of the vehicle, the strain rate of the piezoelectric sensor 10 is faster than the user touching the door handle 2. Therefore, it is determined that it is not a contact with the door handle 2 of the user. The filter 92 prevents a signal in the LF band (for example, about 125 kHz) that is a transmission wave (carrier frequency) from the vehicle to the portable device 5 and passes a detection signal (about 10 kHz) from the piezoelectric sensor 10. It has the characteristic to make it. Thereby, it is possible to suppress the signal from the transmission amplifier 95 from entering the detection circuit of the piezoelectric sensor 10.

[Unlocking operation]
An operation flow for controlling unlocking and locking in the above configuration will be described. FIG. 7 is a flowchart showing an unlocking operation according to the embodiment of the present invention.

  In the state where the vehicle is locked and parked, in order to recognize the portable device 5 which is an electronic key registered for the vehicle, the system ECU 1 sends an out-of-vehicle driver 9 installed on the door panel 60 of the vehicle door 6. Outputs a request signal. The transmission amplifier 94 in the vehicle exterior driver 9 modulates and amplifies the request signal, and transmits a radio wave from the vehicle interior transmission antenna 74 installed on the door handle 2 to the outside of the vehicle. Here, when the portable device 5 approaches the vehicle, the transmitted radio wave is received by the reception system 52 of the portable device 5. Then, the portable device 5 performs signal processing on the received signal with the signal processing CPU 51, and transmits return information such as attributes of the received signal and a registration code via the transmission system 53. Here, the attribute is information indicating a source such as, for example, that the received signal is transmitted through the vehicle exterior transmission antenna 74. On the vehicle side, the radio wave transmitted from the portable device 5 is received by the tuner 71 via the receiving antenna 75, and the system ECU 1 confirms the attribute, the registration code, etc. from the return information, and the electronic device registered for this vehicle It is recognized that the portable device 5 as a key is approaching (processing # 11).

  When the mobile device 5 is recognized, the smart entry system shifts to the unlock detection mode. Whether the system ECU 1 controls a sensor driver (not shown) of the driver 9 outside the vehicle compartment and a detection signal from the unlocking operation detection means 31 is input in order to notify the user that the mode has shifted to the unlock detection mode. No is observed over a predetermined time (process # 12). If the detection signal from the unlocking operation detection means 31 is not transmitted to the system ECU 1 even after the predetermined time has elapsed, the process is terminated.

  When a detection signal is input from the unlocking operation detecting means 31 within a predetermined time, the system ECU 1 checks whether or not the vehicle door 6 is unlocked (process # 13). If there is a vehicle door 6 that is locked, the system ECU 1 instructs the door ECU 61 to perform unlock control. Thereby, the door actuator 62 is driven to unlock the vehicle door 6 (process # 14), and the unlocking process by the smart entry system is ended.

[Locking operation]
FIG. 8 is a flowchart showing the locking operation according to the embodiment of the present invention. The locking operation when the user gets off will be described with reference to FIG. When the user is in the passenger compartment, the portable device 5 (electronic key) carried by the user is also in the passenger compartment. The portable device 5 receives the request signal that is modulated and amplified by the vehicle interior driver 72 installed in the vehicle interior and transmitted from the vehicle interior transmission antenna 73 installed in the vehicle interior. The portable device 5 performs signal processing on the received signal by the signal processing CPU 51, and transmits return information such as attributes of the received signal and a registration code via the transmission system 53. The radio wave transmitted from the portable device 5 is received by the tuner 71 via the receiving antenna 75, and the system ECU 1 confirms this reply information and recognizes that the portable device 5 is in the passenger compartment.

  In this state, when the user carries the portable device 5 and gets off and closes the vehicle door 6, the communication is interrupted, and the system ECU 1 recognizes that the portable device 5 has moved from the vehicle interior to the vehicle exterior ( Process # 21). In addition to this, it may be confirmed that communication with a signal transmitted from the vehicle interior transmission antenna 74 can be established as described in the unlocking operation.

  When it is confirmed that the user gets off and the vehicle door 6 is closed, the smart entry system shifts to the lock detection mode. In the locking detection mode, the system ECU 1 controls a sensor driver (not shown) of the driver 9 outside the vehicle compartment via the SEL terminal, and determines whether or not a detection signal from the locking operation detection means 32 is input over a predetermined time. Observe (process # 22). If the detection signal from the locking operation detection means 32 is not transmitted to the system ECU 1 even after the predetermined time has elapsed, the process ends.

  When a detection signal is input from the locking operation detection means 32 within a predetermined time, the system ECU 1 checks whether or not the vehicle door 6 is unlocked (process # 23). If the unlocked vehicle door 6 is present, the system ECU 1 instructs the door ECU 61 to perform the locking control, the door actuator 62 is driven, and the vehicle door 6 is locked (process # 24). When the vehicle door 6 is locked, the locking process by the smart entry system is terminated.

[Another embodiment]
In the above embodiment, as shown in FIG. 9, a contact portion 27 that contacts the piezoelectric sensor 10 can be provided inside the door handle 2. Thereby, since the mechanical external force when the user contacts the door handle 2 is easily transmitted to the piezoelectric sensor 10 by the contact portion 27, it becomes easier to detect the contact of the user with the door handle 2. In addition, the contact part 27 is not limited to the shape shown in FIG.

  In the above embodiment, as shown in FIG. 10, the non-contact portion 77 where the wound piezoelectric sensor 10 does not contact is provided on the ferrite 76 of the outside transmission antenna 74, and the piezoelectric sensor 10 disposed on the non-contact portion 77 is ferrite. A pressing portion 28 that can be pressed can be provided on the 76 side. Accordingly, the piezoelectric sensor 10 is also easily displaced by the pressing from the pressing portion 28 in accordance with the mechanical external force when the user contacts the door handle 2, and thus the detection sensitivity for the user's contact with the door handle 2. Will increase.

  In addition, as shown in FIG. 11, an elastic member 29 such as a cushioning material can be provided around the pressing portion 28, and can be brought into contact with the outside transmission antenna 74 having the non-contact portion 77. Thus, when the user contacts the door handle 2, the outside transmission antenna 74 moves to the elastic member 29 side and deforms the elastic member 29, and the pressing portion 28 enters the non-contact portion 77 side. The piezoelectric sensor 10 can be displaced. In this case, it is also possible to control the detection sensitivity by appropriately selecting the material of the elastic member 29 based on hardness and adjusting the ease of deformation of the door handle 2 with respect to a mechanical external force. it can.

  Furthermore, the non-contact part 77 and the press part 28 can also be provided with two or more along the vertical direction (longitudinal direction) of the surface of the ferrite 76, as shown in FIG. Even with such a configuration, the mechanical external force when the user contacts the door handle 2 is easily transmitted to the piezoelectric sensor 10, and the detection sensitivity can be increased. 12 illustrates the case where the non-contact portion 77 is provided along the longitudinal direction of the ferrite 76, the present invention is not limited to this, and the non-contact portion 77 extends along any direction such as a horizontal direction or an oblique direction. It may be provided.

  The non-contact portion 77 is not limited to the above example, and is formed in an arbitrary shape by adopting a conventionally known method such as providing irregularities on the surface of the ferrite 76 or providing a hole (including a through hole). be able to. Further, the non-contact portion 77 can be provided on a plurality of surfaces of the ferrite 76.

  In the above embodiment, the handle cover 25 has been described as an example in which the handle cover 25 is provided on the side (inner side) of the door handle 2 facing the door panel 60, but the handle cover 25 faces the door panel 60 of the door hand 2 as shown in FIG. 13. It can also be provided on the non-side (outside). Also in this case, the mechanical external force when the user contacts the door handle 2 can be transmitted to the piezoelectric sensor 10 in a similar manner.

  In the above embodiment, the case where the antenna according to the present invention is used as the outside transmission antenna 74 has been described as an example, but it can also be used as a transmission / reception antenna. In this case, a filter A 92 and a filter B 96 are provided in the driver 9 outside the passenger compartment as shown in FIG. The filter A92 prevents the signal in the UHF band (for example, about 310 MHz), which is a received wave (carrier frequency) from the portable device 5 to the vehicle, and allows the detection signal (about 10 kHz) from the piezoelectric sensor 10 to pass. Have The filter B96 prevents the detection signal (about 10 kHz) from the piezoelectric sensor 10 from passing, and allows a signal in the UHF band (for example, about 310 MHz), which is a reception wave (carrier frequency) from the portable device 5 to the vehicle, to pass therethrough. Have With these filters, the detection signal from the piezoelectric sensor 10 and the signal received from the portable device 5 can be distributed. The signal received from the portable device 5 is provided in the driver 9 outside the vehicle as indicated by an arrow S3. The signal is transmitted to the system ECU 1 through the filter B 96, the detection unit 97, and the demodulation unit 98, and is determined by the determination unit 101.

The figure which shows an example of the system configuration | structure which concerns on this embodiment The perspective view which shows an example of the door for vehicles which concerns on this embodiment. Explanatory drawing of the door handle concerning this embodiment Perspective view showing a configuration example of a piezoelectric sensor A perspective view showing a configuration example of an antenna Block diagram showing an example of signal processing according to the present embodiment The flowchart which shows unlocking operation which concerns on this embodiment The flowchart which shows locking operation which concerns on this embodiment Sectional drawing which shows the antenna and contact part which concern on another embodiment Sectional drawing which shows the antenna and press part which concern on another embodiment Sectional drawing which shows the antenna and press part which concern on another embodiment Sectional drawing which shows the antenna and press part which concern on another embodiment Explanatory drawing of the door handle concerning another embodiment The block diagram which shows an example of the signal processing which concerns on another embodiment

Explanation of symbols

1 System ECU (control means)
2 Door handle 5 Portable device 6 Vehicle door 10 Piezoelectric sensor 24 Handle body 25 Handle cover 26 Internal space 27 Abutting portion 28 Pressing portion 74 Outside transmission antenna (antenna)
76 Ferrite (magnetic material)
77 Non-contact part

Claims (4)

A door handle provided outside the vehicle door compartment for opening and closing the vehicle door;
A cable-shaped piezoelectric sensor that is provided inside the door handle and detects contact of the user with the door handle;
An antenna that is formed by winding the piezoelectric sensor around the outer periphery of the magnetic body and communicates with a portable device carried by the user;
Recognizing the portable device existing within a predetermined range from the vehicle by communication with the portable device, and detecting contact of the user with the door handle in a state where the portable device is recognized, the vehicle A vehicle door opening and closing device comprising control means for unlocking the door.   The door handle includes a handle main body supported by the vehicle door, and a handle cover that forms an internal space for accommodating the antenna between the handle main body, and the handle main body and the handle cover are relatively The vehicle door opening and closing device according to claim 1 configured to be movable.   The vehicle door opening and closing device according to claim 1, wherein a contact portion that contacts the piezoelectric sensor is provided inside the door handle. The magnetic body includes a non-contact portion that does not contact the wound piezoelectric sensor,
The vehicle door opening and closing device according to any one of claims 1 to 3, further comprising a pressing portion capable of pressing the piezoelectric sensor disposed in the non-contact portion toward the magnetic body.

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