CN111128585A

CN111128585A - Conductive adhesive key and multifunctional combined switch

Info

Publication number: CN111128585A
Application number: CN202010048492.7A
Authority: CN
Inventors: 晏毅; 汤友扩; 杨培雷
Original assignee: BCS Automotive Interface Solutions Suzhou Co Ltd
Current assignee: BCS Automotive Interface Solutions Suzhou Co Ltd
Priority date: 2020-01-16
Filing date: 2020-01-16
Publication date: 2020-05-08

Abstract

The invention discloses a conductive adhesive key which comprises a pressing part (11), a fixing part (12) and an outer elastic part (13) connected between the pressing part (11) and the fixing part (12), wherein an inner cavity (13a) is formed among the pressing part (11), the fixing part (12) and the outer elastic part (13), the conductive adhesive key further comprises an upper conductive layer (10) and a lower conductive layer (19) which are arranged in the inner cavity (13a), and the upper conductive layer (10) and the lower conductive layer (19) are connected with the pressing part (11) and are not located on the same horizontal plane. According to the invention, the upper conductive layer and the lower conductive layer with different upper and lower heights are arranged, and the lower conductive layer and the upper conductive layer can be sequentially contacted with the corresponding contacts after the pressing part is pressed down, so that different function outputs are realized, the structure is simple, and the use is very convenient.

Description

Conductive adhesive key and multifunctional combined switch

Technical Field

The invention relates to a conductive adhesive key and a multifunctional combined switch using the same.

Background

The automobile combination switch is an output assembly for controlling operation signals of related functions of an automobile, is generally arranged on a steering column of an automobile steering wheel, and can output electric signals capable of being read by an electronic module and a relay through operations such as rotating, shifting and pressing the combination switch when in use. In order to realize each function, a conventional combination switch is designed with a separate functional structure for each functional switch, different functional switches are independent of each other, and the operation direction or operation method is different. Generally, a single handle of a combination switch integrates at least two functions, and if more functions are needed, the complexity of the structure is increased, and the control of the design and the cost is more difficult. Thus, simplifying the complexity of the mechanism becomes even more important, deeply optimizing each functional switch structure and integrating multiple functions on the same structure becomes imperative.

At present, some automobile combination switches are provided with conductive adhesive keys to trigger a switch function, the conductive adhesive keys are one of keys of a plurality of electronic products and comprise conductive rubber capable of conducting electricity, and when the conductive adhesive keys are pressed down, the conductive rubber of the keys can be electrically communicated with a contact below the conductive rubber to realize signal output; when the conductive rubber key is released, the conductive rubber of the key bounces up and is not communicated with the lower contact, and the circuit is disconnected.

The existing conductive adhesive key has a single function, can only realize function control, and needs to be provided with a plurality of conductive adhesive keys for realizing multiple functions, so that the structure of the automobile combination switch is complex, the cost is high, and the problems of difficult assembly and maintenance and the like can be caused.

Disclosure of Invention

The invention aims to provide a conductive adhesive key and a multifunctional combined switch applying the conductive adhesive key, aiming at the defects in the prior art, wherein the conductive adhesive key has a simple structure and can realize multiple functions.

In order to achieve the above object, in one aspect, the present invention provides a conductive adhesive key, which includes a pressing portion, a fixing portion, and an outer elastic portion connected between the pressing portion and the fixing portion, wherein an inner cavity is formed between the pressing portion, the fixing portion, and the outer elastic portion, the conductive adhesive key further includes an upper conductive layer and a lower conductive layer disposed in the inner cavity, and the upper conductive layer and the lower conductive layer are connected to the pressing portion and are not located on the same horizontal plane.

Furthermore, the conductive adhesive key further comprises an upper connecting portion and a lower connecting portion, wherein the upper connecting portion and the lower connecting portion extend from the pressing portion to the inner cavity, the upper conductive layer is connected to the upper connecting portion, and the lower conductive layer is connected to the lower connecting portion.

Further, an inner elastic part is connected between the pressing part and the upper connecting part and between the pressing part and the lower connecting part.

Furthermore, the pressing part is provided with a blind hole corresponding to the positions of the upper connecting part and the lower connecting part, and the upper connecting part and the lower connecting part are both provided with a jacking part extending into the blind hole.

On the other hand, the invention also provides a multifunctional combined switch, which comprises a shell and an inner support connected in the shell, and the multifunctional combined switch also comprises a seesaw button rotatably connected with the inner support, a first piston block in sliding fit with the inner support, a first PCBA board fixedly arranged and a first conductive adhesive key positioned between the first piston block and the first PCBA board, wherein the first piston block can be driven to press the first conductive adhesive key by pressing the seesaw button.

Furthermore, the inner support and the seesaw button are connected through a rotating shaft.

Furthermore, the multifunctional combination switch further comprises a second piston block matched and connected with the inner support in a sliding mode and a second conductive adhesive key arranged between the second piston block and the first PCBA board, and the first piston block and the second piston block are located on two sides of the rotating shaft respectively.

Furthermore, the inner support is provided with a first guide hole corresponding to the first piston block.

Further, the multifunctional combined switch further comprises a side pressure button which is matched and connected with the shell in a sliding mode, a fixed second PCBA board and a third conductive adhesive key which is located between the side pressure button and the second PCBA board, wherein the third conductive adhesive key is the conductive adhesive key in any one of claims 1 to 4.

Furthermore, the multifunctional combined switch also comprises a connecting piece connected to the inner support, and the second PCBA is clamped on the connecting piece.

Compared with the prior art, the invention has the advantages that:

1. according to the invention, the upper conducting layer and the lower conducting layer with different upper and lower heights are arranged, and the lower conducting layer and the upper conducting layer can be controlled to be contacted with the corresponding contacts by controlling the pressing distance, so that different function outputs are realized, the structure is simple, and the use is very convenient;

2. the multifunctional combined switch is provided with the seesaw button which is rotatably connected with the inner support, the two ends of the seesaw button are provided with the first conductive adhesive key and the second conductive adhesive key which can be pressed by the seesaw button, different functions can be realized by pressing the two ends of the seesaw button, the structure is simple, and the use is convenient; meanwhile, the function control of the combination switch can be further increased by combining the use of the conductive adhesive key;

3. the multifunctional combination switch is also provided with a side pressure button, and the third conductive adhesive key can be controlled by pressing, so that the functions of the combination switch are further increased.

Drawings

Fig. 1 is a schematic structural diagram of a conductive adhesive key of the present invention.

Fig. 2 is a cross-sectional view of the conductive adhesive key of the present invention.

Fig. 3 is a schematic view of the lower conductive layer of the conductive adhesive key of the present invention contacting with the contact.

Fig. 4 is a schematic diagram of the upper conductive layer of the conductive adhesive key of the present invention contacting with the contact.

Fig. 5 is a schematic view of another viewing direction of the conductive adhesive key according to the present invention.

Fig. 6 is a sectional view of the multi-function combination switch of the present invention.

Fig. 7 is an enlarged view of a portion a in fig. 6.

Fig. 8 is a schematic structural diagram of the first conductive adhesive key and the second conductive adhesive key in embodiment 2.

Fig. 9 is an enlarged view of a portion B in fig. 6.

Detailed Description

The present invention will be described in further non-limiting detail with reference to the following preferred embodiments and accompanying drawings.

Example 1

As shown in fig. 1, the conductive adhesive key according to a preferred embodiment of the present invention includes an insulating body 1, and an upper conductive layer 10 and a lower conductive layer 19 connected to the body 1.

The main body 1 is made of an elastic insulating material, such as rubber, and as shown in fig. 2, the main body 1 includes a pressing portion 11, a fixing portion 12, and an outer elastic portion 13 connected between the pressing portion 11 and the fixing portion 12. An inner cavity 13a is formed among the pressing portion 11, the outer elastic portion 13 and the fixing portion 12, and the rubber body 1 further includes an upper connecting portion 14 and a lower connecting portion 15 extending from the pressing portion 11 into the inner cavity 13 a.

The upper conductive layer 10 and the lower conductive layer 19 are respectively disposed at the bottom of the upper connection portion 14 and the lower connection portion 15, and the upper conductive layer 10 and the lower conductive layer 19 may be conductive adhesive, metal sheet, or other conductive material. The upper conductive layer 10 and the lower conductive layer 19 are not on the same plane, and specifically, the upper conductive layer 10 is located above the lower conductive layer 19.

As shown in fig. 3, the fixing portion 12 is usually fixed on an object such as a housing or a PCBA board, the first contact 16 and the second contact 17 are correspondingly arranged below the upper conductive layer 10 and the lower conductive layer 19, when the conductive adhesive key is used, the pressing portion 11 is pressed by a finger, because the outer elastic portion 13 is thin and made of rubber, the deformation is easy to occur, the upper conductive layer 10 and the lower conductive layer 19 move to the contacts at the same time, and because the upper conductive layer 10 is relatively close to the upper side, the lower conductive layer 19 is firstly contacted with the second contact 17, and the output of the function signal is realized; then, as shown in fig. 4, if the finger continues to press the pressing portion 11, the upper conductive layer 10 is driven to contact the first contact 16, so as to implement another function signal output. After releasing the finger, the outer elastic portion 13 will return to its shape, thereby driving the pressing portion 11 to return.

As shown in fig. 2 and 5, in order to make the upper conductive layer 10 move downward more smoothly after the lower conductive layer 19 contacts the contact point, a blind hole 18 is formed at a position on the pressing portion 11 corresponding to the lower connecting portion 15, so that a thin inner elastic portion 15a is formed between the lower connecting portion 15 and the pressing portion 11. Compared with a solid structure, the inner elastic part 15a can be deformed more easily, so that the required operating force is reduced, and the operating hand feeling is improved.

The lower connecting portion 15 is further provided with a pressing portion 15b extending into the blind hole 18, and when the conductive adhesive key is driven by a pressed object to make the upper conductive layer 10 contact with the first contact 16, the pressed object can simultaneously abut against the pressing portion 15b, so that the lower conductive layer 19 is kept to contact with the second contact 17, which is more reliable.

A plurality of upper conductive layers 10 and a plurality of lower conductive layers 19 can be arranged, in the embodiment, the number is two, when the key is pressed, only one upper conductive layer 10 and one lower conductive layer 19 are needed to be contacted with the contact, so that the corresponding functional signal can be output, and the reliability of realizing the key function is improved; meanwhile, the structure is more symmetrical, the stress is more balanced, and the operation hand feeling is improved.

It is to be understood that, although only the upper conductive layer 10 and the lower conductive layer 19 having different heights are provided in the present invention, the number of conductive layers having different heights is not limited to two, and for example, one conductive layer located between the upper conductive layer 10 and the lower conductive layer may be further provided.

Example 2

Fig. 6 shows a multi-functional combination switch including a housing 2, an inner support 3 fixed within the housing 2, a seesaw button assembly 4 connected to the inner support 3, and a side pressure button assembly 5 connected to the inner support 3. Wherein, the seesaw button component 4 is exposed out of the side surface of the shell 2 for convenient operation; and the side pressure button assembly 5 is provided at an end of the housing 2.

As shown in fig. 7, the inner frame 3 is provided with a rotating shaft 30, and the seesaw button assembly 4 includes a seesaw button 40 connected to the rotating shaft 30, a first piston block 41 and a second piston block 42 slidably coupled to the inner frame 3, a first PCBA plate 45 fixed to the inner frame 3, a first conductive adhesive button 43 located between the first PCBA plate 45 and the first piston block 41, and a second conductive adhesive button 44 located between the first PCBA plate 45 and the second piston block 42.

The rocker button 40 can swing about the shaft 30, thereby forcing the first piston block 41 and the second piston block 42 to move. The inner bracket 3 is provided with a first guide hole 31 and a second guide hole 32 respectively coupled to the first piston block 41 and the second piston block 42, and the first piston block 41 and the second piston block 42 can slide in the corresponding guide holes. The first piston block 41 and the second piston block 42 are respectively located at two sides of the rotating shaft 30, and when the left side of the seesaw button 40 is pressed, the seesaw button 40 will rotate counterclockwise, so as to drive the first piston block 41 at the left side to press the first conductive adhesive button 43 downwards; conversely, pressing the right side of the rocker button 40 will rotate the rocker button 40 clockwise, thereby driving the second plunger block 42 downward to press the second conductive adhesive button 44.

A top block 41a is provided on each of the first and

second piston blocks

41 and 42 to protrude upward so that the seesaw button 40 can press the first and

second piston blocks

41 and 42.

The first conductive adhesive keys 43 have the same structure as the conductive adhesive keys described in embodiment 1, and are connected to the first PCBA board 45, and contacts corresponding to the upper conductive layer 10 and the lower conductive layer 19 of the first conductive adhesive keys 43 are provided on the first PCBA board 45. By controlling the amplitude of the pressing of the seesaw button 40, the distance of the first plunger block 41 pressing the first conductive adhesive button 43 can be controlled, so as to realize the output of two different control signals, the principle of which is explained in embodiment 1 and will not be described herein.

The second conductive adhesive button 44 is a conventional conductive adhesive button for realizing single functional signal output; in other embodiments, the second conductive adhesive key 43 may also be the conductive adhesive key described in embodiment 1, so as to achieve more diversified function control.

In this embodiment, the first conductive adhesive button 43 and the second conductive adhesive button 44 are integrally formed, as shown in fig. 8, the fixing portion of the first conductive adhesive button 43 is provided with an extending portion 43a extending to one side, and the second conductive adhesive button 44 is disposed on the extending portion 43a, so that the two conductive adhesive buttons only need to be installed once, which is more convenient.

After the seesaw button 40 is released, the seesaw button 40 is restored by the elastic force of the first and second

conductive adhesives

43 and 44 to be used by being pressed next time.

The lateral pressure button assembly 5 includes a lateral pressure button 50 slidably coupled to one end of the housing 2, a second PCBA board 51 fixed to the inner bracket 3, and a third conductive adhesive button 52 provided between the lateral pressure button 50 and the second PCBA board 51.

The side pressure button 50 includes a protruding ring 50a fitted to the inner wall 2a of the casing 2 so that the side pressure button 50 can move in the casing 2, and the protruding ring 50a has an outer diameter larger than other portions of the side pressure button 50 so that it can be restrained by a stopper ring 2b provided at an end of the casing 2.

The inner bracket 3 is connected with a connecting piece 6, the connecting piece 6 is provided with two symmetrical hook parts 60, and the second PCBA board 51 is clamped and fixed on the connecting piece 6 through the hook parts 60. Of course, the second PCBA plate 51 could also be fixed in other ways, for example directly by being screwed to the inner bracket 3; because the space inside the shell 2 is less, therefore PCBA's size has great restriction, adopts the fixed mode of joint to compare in screwed connection, and the joint is fixed need not trompil on PCBA, and circuit arrangement influence on PCBA is less, and can not have because of the vibration leads to the screw pine to take off the scheduling problem.

The connecting piece 6 is also provided with a stop 7, and the stop 7 can limit the limit position of the side pressure button 50 moving in the shell 2 and prevent the third conductive adhesive key 52, the second PCBA board 51 and other components from being damaged by overlarge pressing force.

The third conductive adhesive button 52 has the same structure as the conductive adhesive button in embodiment 1, and contacts corresponding to the upper conductive layer 10 and the lower conductive layer 19 of the third conductive adhesive button 52 are provided on the second PCBA board 51, and after the side press button 50 is pressed, the side press button 50 can drive the lower conductive layer 19 and the lower conductive layer 10 to contact with the corresponding contacts, and different button functions can be realized by controlling the displacement of the button 50.

The invention has the following advantages:

1. by arranging the upper conducting layer and the lower conducting layer with different upper and lower heights, the lower conducting layer and the upper conducting layer can be controlled to be in contact with corresponding contacts by controlling the pressing distance, so that different function outputs are realized, and the multifunctional electric conduction device is simple in structure and very convenient to use;

It should be noted that the above-mentioned preferred embodiments are merely illustrative of the technical concepts and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A conductive adhesive key is characterized in that: it includes presses splenium (11), fixed part (12), connect in press splenium (11) with outer elastic part (13) between fixed part (12), press splenium (11), fixed part (12) and form inner chamber (13a) between outer elastic part (13), the conducting resin button still including set up in last conducting layer (10) and lower conducting layer (19) in inner chamber (13a), go up conducting layer (10) with lower conducting layer (19) with press splenium (11) to link to each other, and not be located same horizontal plane.

2. The conductive adhesive key of claim 1, wherein: the conductive packaging structure further comprises an upper connecting portion (14) and a lower connecting portion (15), wherein the upper connecting portion (14) and the lower connecting portion (15) extend from the pressing portion (11) to the inner cavity (13a), the upper conductive layer (10) is connected to the upper connecting portion (14), and the lower conductive layer (19) is connected to the lower connecting portion (15).

3. The conductive adhesive key of claim 2, wherein: an inner elastic part (15a) is connected between the pressing part (11) and the upper connecting part (14) and between the pressing part (11) and the lower connecting part (15).

4. The conductive adhesive key according to claim 2 or 3, wherein: the pressing portion (11) is provided with a blind hole (18) corresponding to the upper connecting portion (14) and the lower connecting portion (15), and the upper connecting portion (14) and the lower connecting portion (15) are both provided with a jacking portion (15b) extending into the blind hole (18).

5. A multifunctional combination switch comprising a housing (2) and an inner support (3) connected within the housing (2), characterized in that: the multifunctional combined switch further comprises a seesaw button (40) rotatably connected with the inner support (3), a first piston block (41) in sliding fit with the inner support (3), a first PCBA board (45) fixedly arranged, and a first conductive adhesive key (43) located between the first piston block (41) and the first PCBA board (45), wherein when the seesaw button (40) is pressed, the first piston block (41) can be driven to press the first conductive adhesive key (43), and the first conductive adhesive key (43) is the conductive adhesive key in any one of claims 1 to 4.

6. The multi-functional combination switch of claim 5, wherein: the inner support (3) is connected with the seesaw button (40) through a rotating shaft (30).

7. The multi-functional combination switch of claim 6, wherein: the inner support (3) is matched with the inner support in a sliding mode, the second piston block (42) is matched with the inner support in a sliding mode, a second conductive adhesive key (43) is arranged between the second piston block (42) and the first PCBA board (45), and the first piston block (41) and the second piston block (42) are located on two sides of the rotating shaft (30) respectively.

8. The multifunctional combination switch according to any one of claims 5 to 7, wherein: the inner support (3) is provided with a first guide hole (31) corresponding to the first piston block (41).

9. The multifunctional combination switch according to any one of claims 5 to 7, wherein: the electronic device further comprises a lateral pressure button (50) in sliding fit with the shell (2), a fixed second PCBA board (51) and a third conductive adhesive key (52) located between the lateral pressure button (50) and the second PCBA board (51), wherein the third conductive adhesive key (52) is the conductive adhesive key of any one of claims 1-4.

10. The multi-functional combination switch of claim 9, wherein: the inner bracket is characterized by further comprising a connecting piece (6) connected to the inner bracket (3), and the second PCBA (51) is clamped on the connecting piece (6).