JP4079647B2 - Vehicle door outside handle device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle door outside handle device.
[0002]
[Prior art]
When constructing a keyless entry system, as a conventional example in which a communication antenna is arranged in an outside handle device that is an exposed element from a vehicle body, for example, one described in JP-T-2001-520337 is known. Yes. In this conventional example, an antenna is housed inside the handle, and a change in capacitance due to insertion of a hand into a gap formed between the antenna or the cover on which the conductive plating is applied to the handle and the vehicle body is detected. To change the antenna to the communication state.
[0003]
[Problems to be solved by the invention]
However, in the above-described conventional example, there is a problem that the electrostatic capacity detection circuit or the like may be electrostatically damaged when a discharge occurs between the electrode and the hand in the dry period.
[0004]
The present invention has been made to eliminate the above drawbacks, and an object of the present invention is to provide a vehicle door outside handle device having high resistance to electric discharge destruction.
[0005]
[Means for Solving the Problems]
According to the present invention, the object is
A capacitance sensor 2 including a detection electrode 3 and a mounting substrate 4 on which a capacitance detection circuit for detecting capacitance at the detection electrode 3 is mounted is provided, and the handle 1 is attached to the handle 1 by the capacitance sensor 2. approach, or a car dual door outside handle device you detect contact,
A handle body 1b which is formed in a longitudinal direction in the vehicle front-rear direction and protrudes outward from the door panel 9 to a position away from the door panel 9,
The detection electrode 3 of the capacitance sensor 2 is formed in a long length, and includes a substrate housing portion 5 so that one end in the longitudinal direction is adjacent to the substrate housing portion 5 at the time of molding the synthetic resin case 6 formed to be long. And integrally molded,
The mounting substrate 4 is accommodated in a substrate accommodating portion 5 and sealed with a potting resin 7;
In addition, the synthetic resin case 6 has an antenna 8 which is formed in a long size and enters a communication state when the approach or contact of the human body is detected by the electrostatic capacity sensor 2 of the detection electrode 3 of the electrostatic capacity sensor 2. It is integrally molded at the time of molding in a parallel posture along the longitudinal direction,
The sensor unit 14 formed by covering the detection electrode 3, the mounting substrate 4, and the antenna 8 of the capacitance sensor 2 with a synthetic resin material includes the detection electrode 3 and the antenna of the capacitance sensor 2 in the vehicle width direction. This is achieved by providing a vehicle door outside handle device housed in the handle main body 1b so that 8 are stacked .
[0006]
The handle device includes a capacitance sensor 2 that detects the approach or contact of a human body. When the capacitance sensor 2 detects a human body, for example, the communication antenna 8 disposed at an appropriate location of the vehicle is changed to a communication state. The lock is released by communicating with the mobile communication device owned by the driver. Even when a discharge phenomenon occurs when a human body contacts or approaches the handle 1 of the handle device, the entire capacitance sensor 2 is covered with a synthetic resin material that is an insulating material without any breaks. The discharge current is not guided to the capacitance detection circuit and the element is not electrostatically destroyed.
[0007]
The capacitance sensor 2 can insert-mold the detection electrode 3 into the synthetic resin case 6. In this case, the mounting substrate 4 on which the capacitance detection circuit is mounted is formed on the synthetic resin case 6. After being placed in contact with the detection electrode 3 and accommodated in the substrate accommodating part 5 thus formed, the potting resin 7 is filled and sealed.
[0008]
In addition, since the synthetic resin case 6 is integrally molded together with the capacitance sensor 2 when the antenna 8 that is in communication with the capacitance sensor 2 when the approach or contact of the human body is detected by the capacitance sensor 2, the whole is integrated. In addition, the workability of assembly to the handle 1 is improved.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows an embodiment of the present invention. The outside handle device is formed by attaching the handle 1 to a handle base 10 fixed to a door panel 9 of the vehicle. By rotating the handle 1 around the pivot axis 10a with the handle base 10, the operation unit 11 connected to a door lock device (not shown) arranged inside the door is operated, and the door lock device is released.
[0010]
The handle base 10 is provided with an auxiliary lock 12 and a lock switch 13 that can be operated by a key plate. By operating the auxiliary lock 12, the door lock device can be locked and unlocked, and when the lock switch 13 is pressed, the door lock device can be locked. Can be operated.
[0011]
FIG. 2 shows the handle 1 of the handle device. The handle 1 is provided with a connecting portion 1a to the handle base 10 at one end and is formed long in the vehicle front-rear direction (vehicle length direction), and has a handle body 1b made of synthetic resin including the connecting portion 1a. A recessed groove that opens toward the door panel is provided in almost the entire area of the handle body 1b except for the connecting portion 1a, and the sensor unit 14 including the antenna 8 and the capacitance sensor 2 is accommodated in the recessed groove. After that, the cover 16 is closed by a synthetic resin cover 15 fixed to the handle main body 1b by a screw 16.
[0012]
As shown in FIG. 3, the sensor unit 14 is detected by an antenna 8 in which a conductive wire 8b is wound around a core 8a made of a ferromagnetic material such as ferrite or ceramic, and a detection electrode 3 made of a conductive metal material such as stainless steel. And a capacitance sensor 2 for detecting a change in capacitance by a capacitance detection circuit. The detection electrode 3 and the antenna 8 are integrated in a molding resin filled in the mold after being set in the molding mold. In the molded state, the antenna 8 and the detection electrode 3 are in the entire range. Is covered with a case 6 made of synthetic resin.
[0013]
Further, at the time of integral molding with the molding resin, a substrate housing portion 5 is formed in the molded portion (case 6), and the mounting substrate 4 is housed in the substrate housing portion 5. The mounting substrate 4 is electrically connected to the detection electrode 3 and the like via the antenna 8 exposed on the inner wall of the substrate housing portion 5 at the time of molding and the lead portion 17 to the detection electrode 3, and the lead portion 17 of the antenna 8 is The external connection line 18 is connected by pattern wiring or the like formed on the mounting substrate 4. As shown in FIG. 3B, the molded portion 6 is formed with a cable lead-out portion 6 a having a shape in which the wall surface of the substrate housing portion 5 is notched. An electrostatic capacitance detection circuit is mounted on the mounting substrate 4, and the lead portion 17 of the detection electrode 3 is connected to the input terminal of the electrostatic capacitance detection circuit, and an external connection line 18 connected to the output terminal side. Is pulled out to the sensor unit 14 via.
[0014]
The mounting substrate 4 accommodated in the substrate accommodating portion 5 as described above is sealed with the potting resin 7 or the like filled in the substrate accommodating portion 5, and water droplets and dust are prevented from adhering to the pattern or the like.
[0015]
When the human body approaches the handle 1 with the sensor unit 14 incorporated in the handle 1 or when the hand touches the handle 1 to open the door, the change in the capacitance of the detection electrode 3 detects the capacitance. It is detected by a circuit and input to the control unit. The control unit that has received the detection signal drives the communication circuit to emit a communication radio wave from the antenna 8 and communicates with the portable terminal device on the driver side, and the identity of the portable terminal device is confirmed to match. And unlocking the locking device. Even if a large force is applied to the handle 1 during the door opening operation, an excessive stress is not generated in the antenna 8 covered with the synthetic resin connecting portion, so that, for example, the core 8a such as ferrite is damaged. I don't have to. Further, when the driver goes out of the vehicle and presses the lock switch 13 disposed in the handle 1 case, the lock device shifts to the locked state.
[0016]
Therefore, in this embodiment, the handle device can be used as a component of the keyless entry system simply by incorporating the sensor unit 14 into the handle body 1b. In addition, even when the handle 1 is operated while the handle 1 is operated during the dry period, the discharge current does not flow to the detection electrode 3, so that the circuit element of the capacitance detection circuit is static. There is no electric breakdown.
[0017]
FIG. 4 shows a modification of FIG. In the following description, components that are substantially the same as those of the above-described embodiment are denoted by the same reference numerals in the drawings, and description thereof is omitted.
[0018]
First, in the sensor unit 14 according to the modified example shown in FIG. 4A, only the capacitance sensor 2 is enclosed in the synthetic resin case 6 so that the antenna 8 can be freely arranged at an appropriate position of the vehicle. The modification shown in FIG. 4B shows a case where the capacitive touch sensor 19 is integrally molded in the synthetic resin case 6. The detection electrode 19a of the touch sensor 19 is sealed in the synthetic resin case 6, and the capacitance detection circuit of the touch sensor 19 is a mounting board on which the capacitance detection circuit of the capacitance sensor 2 is mounted. 4 is implemented.
[0019]
FIG. 5 shows a modification in which the antenna 8 and the capacitance sensor 2 are held and integrated in a cylindrical synthetic resin case 6 formed in advance by injection molding or the like. In these modifications, the antenna 8 includes a holder 8c at the base end, and the capacitance sensor 2 is used in a state where the capacitance detection circuit is sealed in the package 2a.
[0020]
In the modification shown in FIG. 5A, the antenna 8 is inserted entirely into the case 6 with the holder 8c positioned on the opening end side, and the electrostatic capacity sensor 2 includes the package 2a and the holder of the antenna 8. The lead wires 20 that are accommodated in the case 6 so as to overlap the 8c and are drawn out from the package 2a and the holder 8c are gathered and drawn out to the outside of the case 6, and then the filling resin material 21 is filled in the case 6 To be solidified.
[0021]
The modification shown in FIG. 5B shows a case where the lock switch 13 is mounted on the sensor unit 14, and the lock switch 13 has an adhesive in the switch housing portion 6 b formed in advance in the case 6. Fixed using etc.
[0022]
Further, the modification shown in FIG. 5C shows a case where a capacitive touch sensor 19 is used as the lock switch. As shown in this figure, if the circuit portions of the touch sensor 19 and the capacitance sensor 2 are sealed in the same package 2a, the manufacture becomes easy.
[0023]
【The invention's effect】
As is clear from the above description, according to the present invention, since the entire capacitance sensor is covered with the synthetic resin material, electrostatic breakdown of the circuit can be prevented.
[Brief description of the drawings]
FIG. 1 is an overall view showing the present invention.
FIG. 2 is an exploded perspective view of a handle.
3A and 3B are diagrams showing a sensor unit, in which FIG. 3A is a cross-sectional view, and FIG. 3B is a perspective view showing the vicinity of a substrate housing portion.
FIG. 4 is a cross-sectional view showing a modified example of the sensor unit.
5 is a cross-sectional view showing another modification of FIG. 4;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Handle 2 Capacitance sensor 3 Detection electrode 4 Mounting board 5 Substrate accommodating part 6 Synthetic resin case 7 Potting resin 8 Antenna

Claims (2)

A capacitance sensor comprising a detection electrode and a mounting substrate on which a capacitance detection circuit for detecting the capacitance at the detection electrode is mounted, and the approach to or contact with the handle is detected by the capacitance sensor. a car dual outside door handle device you,
It has a handle body that is elongated in the vehicle front-rear direction and is mounted to protrude outward from the door panel to a position away from the door panel.
The detection electrode of the capacitance sensor is formed in a long shape, and is integrally molded with one end in the longitudinal direction adjacent to the substrate housing portion at the time of molding a synthetic resin case having a substrate housing portion and formed in a long length. And
The mounting substrate is accommodated in a substrate accommodating portion and sealed with a potting resin,
In addition, the synthetic resin case is formed in a long shape, and an antenna that is in a communication state when the approach or contact of the human body is detected by the capacitance sensor is parallel to the longitudinal direction of the detection electrode of the capacitance sensor. Is molded at the time of molding in a
The sensor unit formed by covering the detection electrode, the mounting substrate, and the antenna of the capacitance sensor with a synthetic resin material so that the detection electrode of the capacitance sensor and the antenna overlap in the vehicle width direction. A vehicle door outside handle device housed in a handle. Instead of the capacitance sensor according to claim 1, a capacitance sensor in which a capacitance detection circuit is sealed in a package formed at one end of the detection electrode is used.
Forming a holder at the base end of the antenna;
The sensor unit inserts the entire capacitance sensor and antenna by overlapping the package and holder in a cylindrical synthetic resin case formed in advance by injection molding or the like, and fills the synthetic resin case with the filling resin. A vehicle door outside handle device formed by filling and solidifying.

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