CN214996868U - Door handle device - Google Patents

Abstract

The utility model provides a door handle device that whether or not there is the flooding to the door handle in can both maintain electrostatic capacity sensor's detection precision at the value of hopeing. A door handle device (1) is provided with: a door handle housing (7) having a first housing recess (10); a door handle cover (8) attached to the door handle case (7) so as to cover the first receiving recess (10); an electrostatic capacitance sensor (26) disposed in the first housing recess (10); a covering member (5) formed by filling a synthetic resin material in the first housing recess (10); and a waterproof pad (6) disposed in a compressed state so as to occupy an internal space formed between the door handle cover (8) and the cover member (5) at a position corresponding to at least the electrode (34) of the electrostatic capacitance sensor (26).

Description

Door handle device

Technical Field

The utility model relates to a door handle device.

Background

Conventionally, there is known a door handle in which an antenna portion and a capacitance sensor are housed in a case, and a conductive member is disposed between the case and an electrode of the capacitance sensor (see, for example, patent document 1).

However, the conventional door handle described above has a problem in that a large amount of water enters the door handle due to car washing or the like and stays in the door handle, and thus detection accuracy of the detection by the electrostatic capacity sensor is lowered. In particular, when a conductive sponge or the like is used as the conductive member, water tends to be contained, and the above problem becomes remarkable.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2017-214728

SUMMERY OF THE UTILITY MODEL

Problem to be solved by utility model

The utility model aims to provide a door handle device that can keep the detection precision of electrostatic capacity sensor at the value of hope no matter whether exist to the flooding in the door handle.

Means for solving the problems

As a means for solving the problem, the present invention provides a door handle device, comprising: a door handle housing having a first receiving recess; a door handle cover attached to the door handle housing so as to cover the first receiving recess; an electrostatic capacitance sensor disposed in the first receiving recess; a covering member formed by filling the first receiving recess with a synthetic resin material so as to integrate the capacitance sensor; and a waterproof pad disposed in a compressed state so as to occupy an internal space formed between the door handle cover and the cover member at a position corresponding to at least the electrode of the electrostatic capacity sensor.

According to this configuration, by preventing water from entering the region where the waterproof pad is disposed, the influence on the electrostatic capacitance of the electrode can be reliably prevented.

Preferably, the door handle device further includes a case disposed in the first receiving recess and having a second receiving recess, the case having a bulging portion at a bottom surface portion of the second receiving recess, an antenna and a circuit board being received in the second receiving recess, and the covering member is formed to cover a surface of the bulging portion, the antenna and the circuit board.

According to this configuration, the electrode of the electrostatic capacitance sensor is covered with the covering member, and the antenna and the circuit board are also covered with the covering member, so that the waterproof property can be improved.

Preferably, the electrode of the electrostatic capacity sensor is a first electrode insert-molded on the bottom surface portion of the case.

According to this configuration, it is not necessary to assemble the electrode of the electrostatic capacity sensor, and the assembling workability can be improved. Further, since the electrode is insert-molded, the intrusion of water can be reliably prevented.

Preferably, the electrode of the electrostatic capacity sensor is a second electrode insert-molded in the bulging portion of the case.

With this configuration, the electrode of the capacitance sensor can be disposed in the vicinity of the handle cover with the swelling portion in a state in which the water-proof property is improved.

Preferably, the waterproof pad is formed of a pad-shaped portion integrally formed with the cover member.

According to this structure, the number of parts can be reduced, and the assembling error can be suppressed and the assembling property can be improved.

The waterproof pad may have a plurality of protrusions on a contact surface with the door handle cover.

According to this structure, even if the inner surface of the door handle cover is curved, the variation in the compressed state is less likely to occur than in the case of surface contact with the pad-shaped portion. Therefore, the pressure-bonded state of the electrostatic capacity sensor on the electrode side can be stabilized, and the water resistance can be improved.

Effect of the utility model

According to the utility model discloses, waterproof pad possesses the inner space that forms between electrostatic capacity sensor's electrode and door handle cover with compression state to can prevent to soak effectively. As a result, the detection accuracy of the electrostatic capacity sensor can be prevented from being lowered.

Drawings

Fig. 1 is a front view of the door handle device of the present embodiment.

Fig. 2 is a perspective view of the door handle device of fig. 1.

Fig. 3 is an exploded perspective view of the door handle device of fig. 2.

Fig. 4 is a perspective view illustrating the case, the first electrode, and the second electrode of fig. 3.

Fig. 5 is an exploded perspective view of the antenna of fig. 3.

Fig. 6 is a longitudinal sectional view of a housing of the door handle apparatus of fig. 2.

Fig. 7 is a partial longitudinal sectional view of the housing of the door handle apparatus of fig. 2.

Fig. 8 is a perspective view of a cover member of another embodiment.

Description of the reference numerals

1 door handle device

2 outer plate

3 handle

4 antenna unit

5 covering Member

6 waterproof pad

7 door handle shell

8 door handle cover

9 casing

10 first receiving recess

11 working part

12 arm part

13 opening part

14 second receiving recess

15 narrow recess

16 wide concave part

17 projection

18 locking claw

19 projecting strip

20 groove part

21 first recess

22 bulge part

23 second recess

24 aerial

25 unlocking sensor (first electrostatic capacity sensor)

26 Lock sensor (second electrostatic capacity sensor)

27 Circuit board

28 winding

29 spool

30 ferrite rod

31 connecting terminal

33 first electrode

34 second electrode

35 narrow part

36 wide part

37 flexible wire

38 positioning recess

39 locking receiving part

41 pad-shaped part

42 convex part.

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The following description is merely exemplary in nature and is not intended to limit the present invention, its application, or uses.

(Overall Structure)

Fig. 1 and 2 show a door handle device 1 according to the present embodiment. The door handle device 1 includes a handle 3 attached to an outer panel 2 of a vehicle door. As shown in fig. 3, the handle 3 incorporates an antenna unit 4, and the antenna unit 4 is covered by a covering member 5. A waterproof pad 6 is pressed against a part of the cover member 5.

(handle)

The handle 3 is made of synthetic resin, and is composed of a door handle case 7 and a door handle cover 8. A case 9 is housed in an internal space formed by the door handle case 7 and the door handle cover 8.

The door handle case 7 is formed in a groove shape extending from one end to the other end. The groove-like portion is a first receiving recess 10. A working portion 11 protrudes from one end portion of the door handle case 7. The operating unit 11 is connected to a door locking device (not shown) disposed inside the vehicle door. An arm portion 12 protrudes from the other end portion of the door handle housing 7. The distal ends of the arms 12 are rotatably supported by support shafts (not shown) of the outer panel 2. An opening 13 is formed near the arm 12. The cord 37 extending from the antenna unit 4 can be drawn out into the door main body through the opening 13.

The door handle cover 8 is attached to the door handle case 7 so as to cover the first receiving recess 10 of the door handle case 7. The door handle cover 8 is bent so as to protrude from one end toward the center portion in the longitudinal direction of the other end, and is also bent so as to protrude from the center portion in the short-side direction orthogonal to the longitudinal direction.

The case 9 is made of synthetic resin, and as shown in fig. 4, extends from one end to the other end, and has a second housing recess 14 formed on a surface thereof (first surface 9 a: a surface exposed when the case 9 is housed in the first housing recess 10 of the handle case). The outer surface of the case 9 formed by the other surfaces has a shape substantially corresponding to the inner surface of the first receiving recess 10 of the door handle case 7. The second receiving recess 14 includes a narrow recess 15 on one end side and a wide recess 16 on the other end side. A plurality of projections 17 for supporting the antenna 24 and the circuit board 27 and a plurality of locking claws 18 for holding the circuit board 27 protrude from the bottom surface of the second receiving recess 14. A pair of ribs 19 project from the bottom surface of the wide recess 16 along the respective inner side surfaces. A cord 37 extending from an antenna 24 described later is disposed in the groove portion 20 formed between the ridge 19 and the inner side surface.

As will be described later, the first electrode 33 is embedded in the bottom surface portion 14a of the second housing recess 14 by insert molding. The first concave portions 21 (one is not shown) formed at two locations on the bottom surface of the second receiving concave portion 14 are formed by pulling out pins for positioning a mold used in insert molding the first electrode 33 after molding. Two of the locking claws 18 are located on both sides of one first concave portion 21.

Further, a bulging portion 22 bulging upward is formed on the bottom surface portion 14a of the second housing recess 14. The bulging portion 22 is also connected to one inner side surface constituting the narrow recess 15. The second electrode 34 is embedded in the bulging portion 22 by insert molding. Second recesses 23 are formed at three locations on the surface of the bulge portion 22. The second concave portion 23 is formed by pulling out a pin for positioning a mold used in insert molding the second electrode 34 after molding.

(antenna unit)

The antenna unit 4 includes an antenna 24, an unlock sensor 25 (first capacitance sensor), a lock sensor 26 (second capacitance sensor), and a circuit board 27.

As shown in fig. 5, the antenna 24 includes: a bobbin 29 around the outer periphery of which the winding 28 is wound; a ferrite rod 30 housed in the bobbin 29; and a pair of connection terminals 31 attached to one end side of the bobbin 29. The bobbin 29 is made of an insulating material, and includes a pair of side portions 29a and a plurality of coupling portions 29b that connect the side portions 29 a. The side portions 29a are plate-shaped, face each other in a plane, and extend from one end to the other end. Each of the connecting portions 29b has two types, i.e., a wide connecting portion 29b and a narrow connecting portion 29b, and connects both sides of the side portion 29 a. The side portion 29a and the coupling portion 29b form a space in which the ferrite rod 32 can be disposed on the bobbin. The coil 28 is wound with a wire material at a plurality of positions (five positions in this case) between the respective connection portions 29b, and two ends (a winding start end and a winding end) are connected to the connection terminals 31. The connection terminal 31 is integrally attached to one end of each side portion 29a of the bobbin 29. The tip end portion of the connection terminal 31 is bent at a substantially right angle and electrically connected to a circuit board 27 described later.

The unlock sensor 25 includes a first electrode 33 having a flat plate shape. As shown in fig. 4, the first electrode 33 includes: a first plate portion 33a on one end side; and a second plate portion 33b having one side edge (first side edge) cut out at the other end side thereof and having a width slightly smaller than that of the first plate portion. A first terminal portion 33c is formed at the first side edge of the second plate portion, and a portion of the first terminal portion 33c near the first plate portion 33a extends in a substantially right-angle direction.

The lock sensor 26 includes a second electrode 34 having a flat plate shape. One end of the second electrode 34 is bent in a substantially right-angle direction, and a second terminal portion 34a extends, and the second terminal portion 34a and the bent portion form a substantially U-shape.

The first electrode 33 and the second electrode 34 are insert-molded in the case 9 as shown in fig. 6 and 7. The first electrode 33 and the second electrode 34 are electrodes of a self-capacitance type electrostatic capacitance sensor, and are configured to have an electrostatic capacitance (parasitic capacitance) between the electrodes and the ground, and to generate a new electrostatic capacitance when a hand approaches the grip 3. The first electrode 33 is disposed along the curved bottom surface of the bottom surface portion 14a of the second housing recess 14 of the case 9, and can detect a hand inserted between the back surface side of the handle case 7 and the recess of the outer panel 2 when the handle 3 is gripped. The second electrode 34 is disposed on the bulging portion 22 of the case 9, and can detect contact of the hand with the surface of the handle cover 8 of the handle 3. The first electrode 33 and the second electrode 34 are insert-molded in the case 9 so that the first terminal portion 33c and the second terminal portion 34a protrude into the second accommodation recess 14, and are electrically connected to a circuit board 27, which will be described later.

As shown in fig. 3, the circuit board 27 has various electronic components 27a mounted on the front and back surfaces thereof, and includes a narrow portion 35 on one end side and a wide portion 36 on the other end side. By mounting the electronic component 27a on the front and back surfaces of the circuit board 27, a desired electronic component can be mounted even if the narrow portion 35 is formed. The narrow portion 35 and the wide portion 36 are disposed in the narrow recess 15 and the wide recess 16 of the housing 9, respectively. Four cords 37 are connected to the end of the circuit board 27 on the wide portion 36 side. The cord 37 is led out from the opening 13 of the housing 9.

(covering Member)

The cover member 5 is illustrated as a separate member in fig. 2, but the cover member 5 is formed by filling molten resin into the second housing recess 14 by low-pressure molding using a mold in a state where the antenna 24 and the circuit board 27 are housed in the second housing recess 14 of the housing 9. In a state where the covering member 5 is formed in the second receiving recess 14, the antenna 24, the circuit board 27, the connection portion of the first terminal portion 33c of the first electrode 33 to the circuit board 27, the connection portion of the second terminal portion 34a of the second electrode 34 to the circuit board 27, the connection portion of the winding 28 of the antenna 24 to the connection terminal 31, the connection portion of the circuit board 27 to the connection terminal 31, the first electrode 33, and the like are all covered with the covering member 15. This can improve the water resistance.

(waterproof pad)

The waterproof pad 6 is a plate-like member made of an elastic material having low water absorption such as urethane, and is disposed between the cover member 5 and a part of the housing 9 and the door handle cover 8. That is, the waterproof pad 6 covers the portion corresponding to the bulging portion 22 of the case 9, and is held in a state of being compressed between the cover member 5 and the door handle cover 8 without a gap in a state where the door handle cover 8 is attached to the door handle case 7.

(assembling method)

The door handle device 1 constituted by the foregoing structure is assembled in the following manner.

First, the case 9 is formed by insert molding the first electrode 33 and the second electrode 34. In this insert molding, the first electrode 33 is disposed at a position along the bottom surface of the case 9 and the second electrode 34 is disposed at a position along the surface of the bulging portion 22 in the mold by using a positioning pin, not shown. Therefore, after the housing 9 is formed, the first concave portion 21 and the second concave portion 23 are formed at positions where the positioning pins are pulled out, respectively.

The ferrite rod 30 is inserted between the side portion 29a and the connection portion 29b of the bobbin 29, the winding 28 is wound around the bobbin 29, and both end portions of the winding 28 are connected to the connection terminals 31 by soldering or the like, thereby completing the antenna 24. The completed antenna 24 is disposed in the second receiving recess 14 of the housing 9, and is assembled in a state in which both side portions of each coupling portion 29b of the bobbin 29 are guided to the inner side surfaces of the ribs 19 of the housing 9.

Next, the circuit board 27 is disposed in the second accommodation recess 14 of the housing 9. The narrow width portion 35 and the wide width portion 36 of the circuit board 27 are respectively assembled to the narrow width recess portion 15 and the wide width recess portion 16 of the case 9. At this time, the locking claws 18 formed on the housing 9 are locked to both side edges of the circuit board 27, thereby preventing the circuit board 27 from coming off the housing 9. The cord 37 connected to the circuit board 27 is led out from the opening 13 along the groove 20 of the housing 9.

Here, the antenna 24 and the circuit board 27 are separately housed in the case 9, but it is preferable that the connection terminal 31 of the antenna 24 is connected to the circuit board 27 to form the antenna unit 4 and then assembled in the case 9. Then, the first terminal portion 33c of the first electrode 33 and the second terminal portion 34a of the second electrode 34 may be inserted into and connected to a hole (through hole) formed in the circuit board 27. Preferably, the connection portion between each of the terminal portions 33c and 34a and the circuit board 27 is fixed by soldering or the like.

Thereafter, the covering member 5 is formed by filling the second housing recess 14 of the housing 9 with synthetic resin by low pressure molding. Thus, the second housing recess 14 is completely covered by the covering member 5, and the antenna 24 and the circuit board 27 are kept waterproof. At this time, the surface (first surface 9a) of the bulging portion 22 is also covered with the covering member 5. As a result, not only the first electrode 33 exposed from the first recess 21 but also the second electrode 34 exposed from the second recess 23 is covered by the covering member 5.

When the antenna unit 4 is accommodated in the case 9 in this manner, the case 9 is then disposed in the first accommodating recess 10 of the door handle case 7. Then, the waterproof pad 6 is disposed on the surface (first surface 9a) of the bulging portion 22 of the case 9, that is, at a position corresponding to the second electrode 34, and the door handle cover 8 is attached to the door handle case 7, thereby completing the assembly operation. At this time, the waterproof pad 6 is compressed between a part of the cover member 5 and the door handle cover 8. Preferably, the waterproof pad 6 is fixed to the surface (first surface 9a) of the bulging portion 22 of the case 9 using an adhesive such as a double-sided tape.

In the door handle device 1 assembled as described above, the second receiving recess 14 of the housing 9 is covered by the covering member 5. This reliably prevents the antenna 24 and the circuit board 27 disposed in the second housing recess 14 from being waterproofed. The first electrode 33 and the second electrode 34 are positioned in the case 9 by insert molding, and the bulging portion 22 is also covered with the covering member 5. That is, the first electrode 33 and the second electrode 34 are improved in water resistance not only by the covering member 5 but also by the case 9. The waterproof pad 6 is pressed against the space between the door handle cover 8 and the cover member 5, that is, the surface of the bulging portion 22 of the case 9 (first surface 9 a: the region where the second electrode 34 is disposed), without forming a gap. Thus, even if water enters the handle 3, there is no space in which the supplied water stays, and the change in the electrostatic capacitance at the second electrode 34 is not adversely affected. As a result, the contact with the handle 3 can be reliably detected.

Further, by providing the bulging portion 22 bulging upward from the bottom surface portion 14a of the second housing recess 14, the second electrode 34 can be insert-molded on the surface side thereof. That is, not only the first electrode 33 but also the second electrode 34 can be integrally formed on the case 9 by insert molding at the same time. Therefore, only by assembling the case 9 to the door handle case 7, the first electrode 33 and the second electrode 34 can be assembled, and the assemblability can be improved.

(other embodiments)

The present invention is not limited to the structure described in the above embodiments, and various modifications can be made.

In the above embodiment, the bulging portion 22 is also covered with the covering member 5, but the bulging portion 22 may not be covered and only the second housing recess 14 may be covered. In this case, the waterproof pad 6 may be directly provided on the surface of the bulging portion 22.

In the above embodiment, the waterproof pad 6 is provided as a separate member from the covering member 5, but the waterproof pad 6 may be provided integrally with the covering member 5. That is, as shown in fig. 8, the pad-like portion 41 is formed on one end side surface of the covering member 5. By integrally forming the pad-shaped portion 41 to the cover member 5, the number of parts can be reduced and the assembly work can be simplified. A plurality of projections 42 are formed on the surface of the pad-shaped portion 41. Here, the convex portion 42 is composed of a plurality of protrusions 42a arranged at predetermined intervals. Although the inner surface of the door handle cover 8 is curved, the projection 42a is less likely to be displaced in a compressed state than when it is in surface contact with the surface of the pad-like portion 41. Therefore, the pressure-bonded state of the lock sensor 26 on the second electrode 34 side can be stabilized, and the waterproofness can be improved. It should be noted that the waterproof pad 6 separate from the covering member 5 or the pad-like portion 41 integral with the covering member 5 is preferably configured to have a plurality of protrusions 42 on the surface. The form of the convex portion 42 is not limited to the ridge 42a, and may be constituted by a plurality of projections having a circular shape in plan view.

In the above-described embodiment, the first electrode 33 and the second electrode 34 are each formed of one electrode used in a self-capacitance type, but may be formed of two electrodes used in a mutual capacitance type.

Claims (6)

1. A door handle device is characterized by comprising:

a door handle housing having a first receiving recess;

a door handle cover attached to the door handle housing so as to cover the first receiving recess;

an electrostatic capacitance sensor disposed in the first receiving recess;

a covering member formed by filling the first receiving recess with a synthetic resin material so as to integrate the capacitance sensor; and

and a waterproof pad disposed in a compressed state so as to occupy an internal space formed between the door handle cover and the cover member at a position corresponding to at least the electrode of the electrostatic capacity sensor.

2. The door handle device according to claim 1,

the door handle device further includes a housing disposed in the first receiving recess and having a second receiving recess,

the housing has a bulging portion on a bottom surface portion of the second receiving recess,

an antenna and a circuit board are accommodated in the second accommodating recess,

the cover member is formed to cover the surface of the protruding portion, the antenna, and the circuit board.

3. The door handle device according to claim 2,

the electrode of the electrostatic capacity sensor is a first electrode insert-molded on the bottom surface portion of the case.

4. The door handle device according to claim 2 or 3,

the electrode of the electrostatic capacity sensor is a second electrode insert-molded in the bulging portion of the case.

5. The door handle device according to any one of claims 1 to 3,

the waterproof pad is configured by a pad-shaped portion integrally formed on the cover member.

6. The door handle device according to any one of claims 1 to 3,

the waterproof pad has a plurality of protrusions on a contact surface with the door handle cover.

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