Universal spring size touch module

Abstract

The utility model relates to the field of touch panel, concretely relates to a touch module of general spring size, including ink layer, conductive layer, injection molding shell and PCB board that stack from top to bottom in proper order, at least one press touch point is provided on ink layer, at least one upper conductive contact is equipped on conductive layer, and upper conductive contact and press touch point one -to -one correspondence, the injection molding shell is set up with the conductive channel corresponding with upper conductive contact, and the PCB board is provided with touch IC and at least one lower conductive contact, and lower conductive contact and upper conductive contact one -to -one correspondence, and the conductive channel is provided with conductive spring, and the both ends of conductive spring are respectively with upper conductive contact and lower conductive contact top and resist contact, control the size of upper conductive contact, ensure the adaptation same size conductive spring, realize the use same size conductive spring on the press touch point of different size, reduce production cost and assembly difficulty.

Description

Technical Field

[0001] This utility model relates to the field of touch panels, specifically to a touch module with a universal spring size. Background Technology

[0002] A touch panel is an input device that enables human-computer interaction by directly touching the screen surface. Its core function is to convert physical touch actions into electrical signals, which are then recognized and responded to by electronic devices. Its working principle relies on sensor technology, with common types including resistive, capacitive, infrared, and surface acoustic wave sensors. Among these, capacitive sensors, due to their high sensitivity and support for multi-touch, have become the mainstream choice for consumer electronics products such as smartphones and tablets.

[0003] With the development of technology, touch panels have been applied in various aspects of life, from the operation interface of bank ATMs and the navigation screens of shopping mall self-service terminals to smart whiteboards in education, touch dashboards in industrial control, and even the central control screens of automobiles and panel control in smart homes—all rely on the support of touch technology. Depending on the application scenario and the display requirements of the buttons, different sized button areas exist, which in turn require different sizes of conductive springs. This necessitates the production of multiple sizes of conductive springs during the touch panel manufacturing process, making touch panel assembly cumbersome and increasing production costs. Utility Model Content

[0004] The purpose of this utility model is to provide a touch module with a universal spring size, which aims to improve the problem that the conductive spring sizes adapted to different sizes of button areas of conventional touch panels are different, which leads to the need to adapt and produce conductive springs of multiple sizes during the touch panel production process, resulting in complicated touch panel assembly and high production costs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A universal spring-sized touch module includes an ink layer, a conductive layer, an injection-molded housing, and a PCB board stacked from top to bottom; the ink layer is provided with at least one press touch position, and the conductive layer is provided with at least one upper conductive contact, the upper conductive contact corresponding one-to-one with the press touch position;

[0007] The injection-molded housing has a conductive channel corresponding to the upper conductive contact. The PCB board is provided with a touch IC and at least one lower conductive contact. The lower conductive contact and the upper conductive contact are in one-to-one correspondence. A conductive spring is provided in the conductive channel. The two ends of the conductive spring are in contact with the upper conductive contact and the lower conductive contact, respectively.

[0008] Furthermore, the conductive layer is also provided with linear conductive silver paste, which surrounds the periphery of the press touch position, and the two ends of the linear conductive silver paste are connected to the upper conductive contact.

[0009] Furthermore, the upper conductive contact is located on the side of the press touch position, and the end of the linear conductive silver paste extends outward and connects to the upper conductive contact.

[0010] Furthermore, an illumination channel is provided on the injection-molded housing, and the illumination channel corresponds to the press touch position.

[0011] Furthermore, the upper conductive contact is a carbon paste conductive contact.

[0012] Furthermore, a light-emitting device is provided on the PCB board, and the light-emitting device is located within the lighting channel.

[0013] Furthermore, the ink layer is a black opaque layer.

[0014] Furthermore, the thickness of the injection-molded housing is 5-10 mm.

[0015] By adopting the above technical solution, this utility model has the following advantages compared with the prior art:

[0016] When a finger presses on a touch-sensitive area, it causes a change in capacitance. The upper conductive contact, conductive spring, and lower conductive contact conduct the current signal from the human body. The touch IC receives the capacitance change signal, thereby obtaining the finger's pressing position. By setting the upper conductive contact at a specific position and controlling its size, it is ensured that a conductive spring of the same size can be used on touch-sensitive areas of different sizes, reducing production costs and assembly difficulty. Attached Figure Description

[0017] Figure 1 This is an exploded view of the touch module with the universal spring size described in this utility model.

[0018] Explanation of reference numerals in the attached figures:

[0019] 1. Ink layer; 11. Press-to-touch area;

[0020] 2. Conductive layer; 21. Upper conductive contact; 22. Linear conductive silver paste;

[0021] 3. Injection-molded housing; 31. Conductive channel; 32. Illumination channel;

[0022] 4. PCB board; 41. Lower conductive contact; 42. Touch IC; 43. Light-emitting device;

[0023] 5. Conductive spring. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0025] Additionally, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" are all based on the orientation or positional relationship shown in the accompanying drawings. They are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element of this utility model must have a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] When an element is referred to as being "fixed to," "set on," or "contained on" another element, it can be directly on or indirectly on that other element. When an element is referred to as being "connected to," it can be directly connected to or indirectly connected to that other element.

[0027] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] Example

[0029] Please refer to Figure 1 As shown, this embodiment provides a touch module with a universal spring size, including an ink layer 1, a conductive layer 2, an injection-molded housing 3, and a PCB board 4 stacked from top to bottom. The ink layer 1 has at least one pressable touch position 11, and the conductive layer 2 has at least one upper conductive contact 21, each corresponding to a pressable touch position 11. The injection-molded housing 3 has a conductive channel 31 corresponding to the upper conductive contact 21. The PCB board 4 has a touch IC 42 and at least one lower conductive contact 41, each corresponding to an upper conductive contact 21. A conductive spring 5 is disposed within the conductive channel 31, with both ends of the conductive spring 5 contacting the upper conductive contact 21 and the lower conductive contact 41 respectively.

[0030] When a finger presses on the touch-sensitive position 11, it causes a change in capacitance. The upper conductive contact 21, the conductive spring 5, and the lower conductive contact 41 conduct the human body current signal. The touch IC 42 receives the capacitance change signal, thereby obtaining the finger pressing position. By setting the upper conductive contact 21 at a specific position and controlling the size of the upper conductive contact 21, it is ensured that the same size conductive spring 5 is used to adapt to different sizes of touch-sensitive positions 11, thereby reducing production costs and assembly difficulty.

[0031] In this embodiment, there are three press touch positions 11, three upper conductive contacts 21, three conductive springs 5 ​​and three lower conductive contacts 41. The press touch positions 11 are arranged in a row with intervals. Similarly, more or fewer press touch positions 11, upper conductive contacts 21, conductive springs 5 ​​and lower conductive contacts 41 can be provided.

[0032] Furthermore, the conductive layer 2 is also provided with linear conductive silver paste 22, which surrounds the periphery of the press-sensitive touch position 11. Both ends of the linear conductive silver paste 22 are connected to the upper conductive contact 21. Simultaneously, depending on the image type of the press-sensitive touch position 11, it can be set at the edge or inside the press-sensitive touch position 11. The linear conductive silver paste 22 covers the pressing area of ​​the press-sensitive touch position 11, improving the acquisition range of the finger pressing position and ensuring that when the finger presses the press-sensitive touch position 11, it can accurately cover the linear conductive silver paste 22 or the upper conductive contact 21, accurately receiving the human body current. In this embodiment, the upper conductive contact 21 is a carbon paste conductive contact, effectively improving the stability of signal transmission while reducing production costs.

[0033] In this embodiment, the upper conductive contact 21 is located on the side of the press touch position 11, and the end of the linear conductive silver paste 22 extends outward and connects with the upper conductive contact 21, so that the upper conductive contact 21 and the press touch position 11 are independent of each other, effectively improving the receiving range of the finger touch position.

[0034] Furthermore, an illumination channel 32 is provided on the injection-molded housing 3, which corresponds to the press touch position 11. The illumination channel 32 covers the press touch position 11, reducing the obstruction of the press touch position 11, increasing the brightness of the press touch position 11, and facilitating the display of image information of the press touch position 11.

[0035] Furthermore, a light-emitting device 43 is provided on the PCB board 4, and the light-emitting device 43 is located within the illumination channel 32. In this embodiment, the light-emitting device 43 is an LED lamp bead; similarly, other light-emitting devices 43 can also be provided. Light passes through the illumination channel 32 to illuminate the image information of the pressed touch position 11, further improving the display effect of the image information of the pressed touch position 11.

[0036] The thickness of the injection-molded housing 3 is 5-10mm. In this embodiment, the thickness of the injection-molded housing 3 is 8mm. Increasing the thickness of the injection-molded housing 3 improves the light propagation path, allowing the light to be fully diffused and uniformly illuminate the touch-sensitive area 11, avoiding small-area illumination at the touch-sensitive area 11 and improving the lighting effect. Similarly, the thickness of the injection-molded housing 3 can be set according to the specifications of the light-emitting device 43, that is, the thickness of the injection-molded housing 3 can also be 5mm or 10mm.

[0037] Furthermore, ink layer 1 is a black light-blocking layer. The black light-blocking area blocks the light around the touch-sensitive area 11 to prevent light from shining out from around the touch-sensitive area 11 and causing light leakage, which would affect the display effect of the image information of the touch-sensitive area 11.

[0038] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A touch module with a universal spring size, characterized in that, The invention comprises, from top to bottom, an ink layer, a conductive layer, an injection-molded housing, and a PCB board; the ink layer is provided with at least one press-sensitive position, and the conductive layer is provided with at least one upper conductive contact, with each upper conductive contact corresponding to a press-sensitive position. The injection-molded housing has a conductive channel corresponding to the upper conductive contact. The PCB board is provided with a touch IC and at least one lower conductive contact. The lower conductive contact and the upper conductive contact are in one-to-one correspondence. A conductive spring is provided in the conductive channel. The two ends of the conductive spring are in contact with the upper conductive contact and the lower conductive contact, respectively.

2. The touch module with a universal spring size according to claim 1, characterized in that: The conductive layer is further provided with linear conductive silver paste, which surrounds the periphery of the press touch position, and the two ends of the linear conductive silver paste are connected to the upper conductive contact.

3. The touch module with a universal spring size according to claim 2, characterized in that: The upper conductive contact is located on the side of the press-sensitive position, and the end of the linear conductive silver paste extends outward and connects to the upper conductive contact.

4. The touch module with a universal spring size according to claim 3, characterized in that: An illumination channel is provided on the injection-molded housing, and the illumination channel corresponds to the press touch position.

5. The touch module with a universal spring size according to claim 1, characterized in that: The upper conductive contact is a carbon paste conductive contact.

6. The touch module with a universal spring size according to claim 3, characterized in that: The PCB board is equipped with light-emitting devices, which are located within the lighting channel.

7. The touch module with a universal spring size according to claim 6, characterized in that: The ink layer is a black opaque layer.

8. The touch module with a universal spring size according to claim 6, characterized in that: The thickness of the injection-molded shell is 5-10 mm.

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