CN103366417A - Keyless system switch module - Google Patents

Abstract

The present invention provides a switch module for a keyless system, comprising a housing, a base, a movable part and an induction coil. The base is fixed in the housing. The movable part is slidably arranged in the housing and is suitable for sliding relative to the base. The induction coil is fixed in the movable part. The induction coil is a preformed coil with a fixed shape.

Description

Keyless system switch module

technical field

The invention relates to a switch module of a hands-free key system, in particular to a switch module of a hands-free key system applied to vehicles.

Background technique

Hands-free keyless system switch modules have been widely used in various vehicles. When the user only needs to carry the electronic key on his body and approach the vehicle body, the hands-free key system in the vehicle will require the password authentication of the electronic key. When the authentication is successful, the vehicle will open related functions, such as opening the door and starting the vehicle with bare hands. The switch module starts the engine, etc. After getting off the car, when the keyless system detects that the electronic key has left the car, the door will be locked immediately, which is very convenient to use.

However, when the power of the electronic key is weak, it is necessary to bring the electronic key close to the keyless switch module (engine start button) in the vehicle, and the electric field provided by the induction coil in the keyless switch module is used to complete the action of inductively checking the password . In the prior art, the assembly process of the induction coil is complicated and will affect the configuration of other components inside the hands-free key switch module.

Contents of the invention

The object of the present invention is to provide a switch module for a hands-free key system in order to solve the problems in the prior art.

To achieve the above object, the present invention provides a switch module for a hands-free key system, which includes a housing, a base, a movable element and an induction coil. The base is fixed in the casing. The movable part is slidably disposed in the casing and suitable for sliding relative to the base. The induction coil is fixed in the movable part. The induction coil is a preformed fixed shape coil.

In one embodiment of the present invention, the induction coil is a coil of fixed shape preformed by gluing. The shape of the winding path of the induction coil can be funnel-shaped, D-shaped or other shapes.

In the present invention, the induction coil is a pre-shaped coil with a fixed shape, so it can be easily assembled, and the shape can be adjusted according to the design requirements, so as to avoid affecting the configuration of other components inside the keyless system switch module.

Description of drawings

FIG. 1 is an exploded view showing a switch module of a hands-free keyless system according to an embodiment of the present invention;

Fig. 2 shows the comparison of the field strength between the funnel-shaped wire-wound induction coil and the circular wire-wound induction coil according to the embodiment of the present invention;

Fig. 3 shows the situation that the induction coil is arranged in the movable part;

FIG. 4A is an assembly diagram showing the switch module 1 of the hands-free keyless system according to the embodiment of the present invention;

Figure 4B is a sectional view showing the direction of 4B-4B' in Figure 4A; and

5A and 5B show the induction coil conduction shrapnel and the start/stop conduction shrapnel of the embodiment of the present invention; and

6A and 6B show a modified example of the present invention.

Wherein, the reference signs are explained as follows:

1～hands-free key system switch module

10～shell

11～shell body

12～Case cover

13～elastic element

20～base

21～conductive part

30～movable parts

31～Movement connection part

32～movable part continuous wall

40～induction coil

41～central opening

50～circuit board

51A, 51B～light source

52～buffer element

60～key cover

61～light guide

61A～Light guide column

61B～kagou

61B’～Kagou

61C～Light guide column

62～light emitting department

63～Key cover connection part

64 ~ plaque

71～The induction coil conducts the shrapnel

72～start/stop conduction shrapnel

Detailed ways

Referring to FIG. 1 , it is an exploded view showing a switch module 1 of a hands-free key system according to an embodiment of the present invention, including a housing 10 , a base 20 , a movable element 30 and an induction coil 40 . The base 20 is fixed in the casing 10 . The movable element 30 is slidably disposed in the casing 10 and is adapted to slide relative to the base 20 . The induction coil 40 is fixed in the movable element 30 .

In the embodiment of the present invention, the induction coil 40 is a pre-formed coil with a fixed shape, which can be formed by gluing or other methods. The shape of the winding path of the induction coil 40 can be funnel-shaped, D-shaped, polygonal or other shapes. Since in the embodiment of the present invention, the induction coil 40 is a pre-shaped element, it can be conveniently assembled and installed in the movable member 30 without providing an additional bobbin for its winding; the shape can be adjusted according to the design requirements, Avoid affecting the configuration of other components inside the hands-free key switch module.

Referring to Fig. 2, it is to show the field strength comparison of the funnel-shaped wound induction coil of the embodiment of the present invention and the generally used circular wound induction coil. Compared with the circular wound induction coil, it can provide the desired induction field strength.

Referring again to FIG. 1 , the switch module 1 of the hands-free key system according to the embodiment of the present invention further includes a circuit board 50 , a light source 51A, a light source 51B, a key cover 60 , a light guide 61 and an elastic element 13 . The circuit board 50 is fixed on the base 20 , the light sources 51A and 51B are electrically connected to the circuit board 50 , and the induction coil 40 is also electrically connected to the circuit board 51 . A buffer element 52 can be disposed between the circuit board 50 and the base 20 . Referring to FIG. 5A and FIG. 5B, the induction coil 40 is electrically connected to the induction coil conduction shrapnel group 71, and the induction coil conduction shrapnel group 71 is slidably and electrically connected to the conductive part 21 on the base 20, and the conductive part 21 It is located on the other side of the base 20 where the circuit board 50 is fixed, and is electrically connected to the circuit board 50 .

The housing 10 includes a housing body 11 and a housing cover 12 .

The key cover 60 includes light outlets 62A and 62B, and the light guide 61 includes a light guide bar 61A. In this embodiment, the light source 51A is a background light, and the light source 51B is a status indicator light. The light guiding rod 61A corresponds to the light source 51A, the light emitting portion 62A corresponds to the light guiding rod 61A, the light guiding rod 61C corresponds to the light source 51B, and the light emitting portion 62B corresponds to the light guiding rod 61C. The light emitting portion 62A may include graphics or text. In this embodiment, the light sources 51A and 51B are light emitting diodes, which may also be other light source elements. The light guide 61 further includes a hook 61B for engaging and fixing the induction coil 40 . When assembling, the light guide member 61 is engaged with the key cover 60 first, the induction coil 40 is engaged with the hook 61B, and finally, the key cover 60 is engaged with the movable member 30 again.

Referring to FIG. 3 , it shows the situation that the induction coil 40 is arranged in the movable member 30. Since the shape and position of the induction coil 40 are properly designed to be as close as possible to the key cover 60, better induction efficiency can be produced. . In addition, the light provided by the light source 51A can also pass through the central opening 41 of the induction coil 40 without being obstructed by the induction coil 40 .

Referring to FIG. 1 and FIG. 4A , the surface of the button cover 60 can be equipped with a decorative plate 64 .

Referring to FIG. 1 , FIG. 4A and FIG. 4B together, FIG. 4A is a combined view showing the switch module 1 of the hands-free key system according to an embodiment of the present invention, and FIG. 4B is a cross-sectional view showing the direction 4B-4B' in FIG. 4A . The movable member 30 includes a movable member connecting portion 31 and a movable member continuous wall 32, the movable member connecting portion 31 is formed on the movable member continuous wall 32, and the button cover 60 includes a button cover connecting portion part 63 , the key cover connecting part 63 can buckle the movable part connecting part 31 , so that the movable part continuous wall 32 is located between the induction coil 40 and the key cover connecting part 63 .

The elastic element 13 is disposed between the movable element 30 and the housing 10 and adapted to provide an elastic force to the movable element. When the user presses the button cover 60 to start or stop the engine, the button cover 60 and the movable member 30 are pushed from an initial position to a starting position. When the engine is started or turned off, the user releases the pressing force, and the elastic element 13 pushes the button cover 60 and the movable member 30 back from the starting position to the initial position.

Referring to FIG. 6A and FIG. 6B , in a modified example of the present invention, the button cover 60 can be directly formed with a hook 61B' for engaging and fixing the induction coil 40 . In this embodiment, the light guide can be omitted, or other forms of light guide design can be used.

Although the present invention has been disclosed above with specific preferred embodiments, it is not intended to limit the present invention. Anyone skilled in this art can still make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be defined by the scope of claims.

Claims (10)

1. a hand-free key system switch module is characterized in that, comprising:

One housing;

One pedestal is fixed among this housing;

One movable piece slidably is located among this housing, and is suitable for sliding with respect to this pedestal; And

One inductive coil is fixed among this movable piece, and wherein, this inductive coil is the coil of preshaped solid shape.

2. hand-free key system switch module as claimed in claim 1 is characterized in that, this inductive coil is preshaped in the gummed mode.

3. hand-free key system switch module as claimed in claim 1 is characterized in that, the coiling path shape of this inductive coil is funnel-form, D font or polygon.

4. hand-free key system switch module as claimed in claim 3 is characterized in that, it also comprises a circuit board and at least one light source, and this circuit board is fixed on this pedestal, and this light source is electrically connected this circuit board, and this inductive coil is electrically connected this circuit board.

5. hand-free key system switch module as claimed in claim 4, it is characterized in that, it also comprises button lid, this button lid comprises a light out part, and wherein, this light source provides a light, this light passes this light out part and appears in this button lid, wherein, this button lid comprises at least one snap fit, this snap fit this inductive coil that is fixed.

6. hand-free key system switch module as claimed in claim 4 is characterized in that, it also comprises a light guide, and this light guide is to should light source.

7. hand-free key system switch module as claimed in claim 6 is characterized in that, it also comprises button lid, this button lid comprises a light out part, and wherein, this light source provides a light, this light is by the guiding of this light guide, passes this light out part and appears in this button lid.

8. hand-free key system switch module as claimed in claim 7, it is characterized in that, this movable piece comprises a movable piece connecting portion and a movable piece continuous wall, this movable piece connecting portion is formed on this movable piece continuous wall, this button lid comprises button lid connecting portion, this button lid connecting portion connects this movable piece connecting portion, and this movable piece continuous wall is between this inductive coil and this button lid connecting portion.

9. hand-free key system switch module as claimed in claim 6 is characterized in that, this light guide comprises at least one snap fit, this snap fit this inductive coil that is fixed.

10. hand-free key system switch module as claimed in claim 1 is characterized in that, it also comprises an elastic element, is located between this movable piece and this housing, is suitable for providing an elastic force to this movable piece.

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