Touch module and touch screen
By designing a touch module including a face frame, a corner cover and an elastic pad in the electronic whiteboard, the problem of touch point offset in the prior art is solved, and a higher positioning accuracy and user experience are achieved.
Patent Information
- Application Number
- CN202421572871.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-04
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-07-04
AI Technical Summary
The existing electronic whiteboard touch PCB board limit structure adopts a hard structure, which causes the touch point to shift and affects the user experience.
A touch module is designed, including a touch circuit board, a face frame, a corner cover and an elastic pad. It is combined with the face frame through a slot on the inside of the face frame. The corner cover and an elastic pad are used for limiting positioning, and the elastic pad comes into contact with the touch circuit board to fix its position.
It effectively avoids the offset of touch points, improves the user experience, and ensures that the touch circuit board is fixed in the face frame and has no movable space.
Smart Images
Figure CN222939478U_ABST
Abstract
Description
Technical Field
[0001] The embodiments of the present utility model relate to the technical field of touch control, and particularly to a touch control module and a touch screen. Background Art
[0002] With the development of technology, as an inductive display device that can receive input signals such as touches, touch screens are becoming more and more popular in people's lives. As a latest computer input device, it is currently the simplest, convenient, and natural way of human-computer interaction. Among them, infrared touch screens have high stability, will not drift due to time and environmental changes, are not affected by current, voltage, and static electricity interference, can operate under harsh environmental conditions, have a relatively long service life, and have a very large cost advantage compared with capacitive screens, and are widely used in the market.
[0003] A touch screen is to install a bezel in front of a display device. A touch PCB (Printed Circuit Board) is designed in the bezel. The touch PCB is equipped with LED (light-emitting diode) lights. One side is the emitting lights, and the opposite side is the receiving lights. Thus, infrared emitting tubes and infrared receiving tubes are arranged on the four sides of the screen, corresponding one by one to form a horizontal and vertical cross infrared ray matrix (see Figure 1 ). After scanning a full circle, if all infrared pairs are unobstructed, it means everything is normal and there is no touch. When it is detected that there is an object blocking the surface of the infrared receiving light, the relevant X / Y axis coordinates are judged and calculated through relevant algorithms, and reported to the computer system through USB output to realize the touch control function.
[0004] The smaller the position offset between the emitting PCB and the receiving PCB of the X / Y axis of the infrared touch screen, the higher the writing accuracy and the better the user experience. Therefore, a limiting structure is required to limit the touch PCB. The existing limiting structure for the touch PCB of an electronic whiteboard uses a hard structure to limit the PCB. Due to certain tolerances in the length direction of the X and Y axis touch PCBs, the existing limiting structure needs to have a relatively large distance from the PCB, resulting in a certain range of movement space for the PCB. The larger the movement space, the greater the offset of the touch point when the end user uses it, and the poor user experience.
[0005] In view of this, how to design a limiting structure to reduce the offset of the touch point and improve the user experience has become a problem that needs to be solved by those skilled in the art. Summary of the Utility Model
[0006] The purpose of the embodiments of the present utility model is to provide a touch control module and a touch screen, which can effectively avoid touch offset during use and improve the user experience.
[0007] To solve the above technical problems, the embodiments of the present utility model provide the following technical solutions:
[0008] On the one hand, the present utility model provides a touch control module, including: a touch control circuit board, a bezel, a plurality of corner caps and a plurality of elastic pads. A slot is provided inside the bezel. The touch control circuit board is combined with the bezel through the slot. Each corner cap is correspondingly arranged at each corner of the bezel, and each elastic pad is correspondingly arranged on the corner cap, and the elastic pad contacts one end of the touch control circuit board.
[0009] In an exemplary embodiment, the elastic pad is arranged on the limiting rib of the corner cap in litigation.
[0010] In an exemplary embodiment, the elastic pad is pasted on the limiting rib of the corner cap by means of single-sided adhesive.
[0011] In an exemplary embodiment, the elastic pad is an L-shaped elastic pad.
[0012] In an exemplary embodiment, the unilateral interference amount of the elastic pad is 0.225±a mm, where a∈[0, 0.1].
[0013] In an exemplary embodiment, the thickness of the elastic pad is 2.5 mm.
[0014] In an exemplary embodiment, the elastic pad is an elastic pad made of an elastic material with a compression ratio of 60±b% to 70±b%, where b∈[0, 1].
[0015] In an exemplary embodiment, the elastic pad is an elastic pad made based on ethylene-vinyl acetate copolymer.
[0016] In an exemplary embodiment, the corner cap is fixed at the corner of the bezel by screws.
[0017] On the other hand, the present utility model provides a touch screen, including a display screen and the touch control module as described above.
[0018] It can be seen from the above technical solutions that the embodiments of the present utility model have the following advantages:
[0019] In the embodiments of the present utility model, a touch control module is provided, including a touch control circuit board, a bezel, a plurality of corner caps and a plurality of elastic pads. A slot is provided inside the bezel. The touch control circuit board is combined with the bezel through the slot. Each corner cap is correspondingly arranged at each corner of the bezel, and each elastic pad is correspondingly arranged on the corner cap, and the elastic pad contacts one end of the touch control circuit board.
[0020] As can be seen, the touch control circuit board in the touch control module in the embodiment of the present utility model can be combined with the bezel through the card slot inside the bezel. A corner cover is provided at each corner of the bezel, and an elastic pad is provided on each corner cover. The elastic pad contacts the touch control circuit board, so that the touch control circuit board can be limited by the elastic pad. Since the elastic pad has a certain stretchability, it can not only meet the tolerance of the touch control circuit board, but also fill the assembly gap. Therefore, the touch control circuit board can be better limited, making the touch control circuit board unable to move and having no movable space, effectively avoiding touch deviation and improving the user experience.
[0021] In addition, the present utility model also provides a corresponding touch screen for the touch control module, which has the corresponding advantages described above.
[0022] It should be understood that the above general description and the following detailed description are only exemplary and do not limit the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the prior art and the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0024] Figure 1 FIG. is a schematic structural diagram of a conventional touch control circuit board;
[0025] Figure 2 FIG. is an exploded structural view of a touch control module provided by an embodiment of the present utility model;
[0026] Figure 3 FIG. is a sectional view of a touch control module provided by an embodiment of the present utility model;
[0027] Figure 4 is Figure 2 a partial enlarged view of the lower right corner in
[0028] Figure 5 is Figure 2 a partial enlarged view of the upper right corner in
[0029] Figure 6 is Figure 2 a partial enlarged view of the upper left corner in
[0030] Figure 7 is Figure 2 a partial enlarged view of the lower left corner in
[0031] Figure 8A partial structural schematic diagram of a touch module provided by an embodiment of the present invention;
[0032] Figure 9 An exploded view of the structure of a touch screen provided by an embodiment of the present invention. Detailed implementation manners
[0033] The embodiments of the present invention provide a touch module and a touch screen, which can effectively avoid touch deviation during use and improve the user experience.
[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0035] Please refer to Figure 2 , Figure 2 A structural schematic diagram of a touch module provided by an embodiment of the present invention. The touch module includes a touch circuit board 1, a bezel 2, a plurality of corner caps 3, and a plurality of elastic pads 4. A card slot 21 is provided inside the bezel 2. The touch circuit board 1 is combined with the bezel 2 through the card slot 21. Each corner cap 3 is correspondingly disposed at each corner of the bezel 2, and each elastic pad 4 is correspondingly disposed on the corner cap 3. One end of the elastic pad 4 is in contact with the touch circuit board 1.
[0036] It should be noted that the touch circuit board 1 in the touch module in the embodiments of the present invention can be inserted into the card slot 21 so that the LED lights on the opposite sides of the touch circuit board 1 are opposite to each other, thereby assembling the touch circuit board 1 and the bezel 2 into a frame structure. Among them, the positional relationship between the LED lights on the touch circuit board 1 and the bezel 2 is as Figure 3As shown, after the touch control circuit board penetrates into the card slot 21 of the bezel 2, both ends of the touch control circuit board 1 need to be position-limited and fixed to prevent fire control in the cavity of the bezel 2 and affect the positioning accuracy of the touch signal points (X / Y axes). In the embodiment of the present invention, corner caps 3 are respectively arranged at each corner of the bezel 2 to fix the bezel 2 and the touch control circuit board 1. In addition, in the embodiment of the present invention, in order to position-limit the touch control circuit board 1, an elastic pad 4 can be respectively arranged on each corner cap. The elastic pad 4 contacts one end of the touch control circuit board 1, so that the touch control circuit board 1 can be position-limited at the corner. Since the elastic pad 4 is in contact with one end of the touch control circuit board 1, there is no moving space between the elastic pad 4 and the touch control circuit board 1, and the touch control circuit board 1 can be better position-limited. Moreover, the elastic pad 1 has a certain elasticity, so that when the touch control circuit board 1 has a certain tolerance in the length direction, the assembly requirements and performance requirements of the touch control circuit board 1 can still be met. Therefore, using the elastic pad 4 in the embodiment of the present invention to position-limit the touch control circuit board 1 can effectively prevent the touch control circuit board 1 from moving in the bezel 2, which is beneficial to improving the accuracy and accuracy of touch positioning, preventing the situation of touch deviation when the end customer uses it, and improving the writing experience.
[0037] In practical applications, the bezel 2 can be a square bezel with 4 corners. Then, corresponding corner caps 3 and elastic pads 4 are arranged at the four corners, as Figure 2 shown, where Figure 2 the corner caps and elastic pads at each corner are respectively as Figures 4 to 7 shown.
[0038] In addition, in order to better arrange the elastic pad 4, the elastic pad 4 in the embodiment of the present invention can be arranged on the limit rib 31 of the corner cap 3. For details, please refer to the Figure 8 assembly drawing shown. Since the limit rib 31 is a rigid structure, in the embodiment of the present invention, in order to avoid limiting the position of the touch control circuit board 1 and prevent affecting the normal assembly and performance of the touch control circuit board 1, the distance between the limit rib 31 and the end of the touch control circuit board 1 can be 2 mm, and the thickness of the limit rib 31 can be 1.5 mm.
[0039] In one embodiment, the elastic pad 4 is an elastic pad made of an elastic material with a compression ratio of 60±b % to 70±b%, where b ∈ [0,1], and the thickness of the elastic pad can be 2.5 mm.
[0040] It should be noted that considering that the touch control circuit board 1 has a tolerance in the length direction (such as ±0.45 mm), in order to better limit the position of the touch control circuit board 1 without affecting the normal assembly and performance of the touch control circuit board 1, an elastic pad with a compression ratio of 60±b% to 70±b% can be used, such as an elastic pad with a compression ratio of 59%, or 60%, or 65%, or 70%, etc. In addition, considering that the elastic pad 4 has a negative tolerance in the length direction, there can be a certain unilateral interference amount in the length direction of the elastic pad, and the unilateral interference amount can be 0.225±a mm, where a∈[0, 0.1], for example, the unilateral interference amount is 0.225 mm. Because the elastic pad 4 will shrink when stressed, when the incoming material of the touch control circuit board 1 has a positive tolerance of 0.45 mm, it will not affect the assembly and performance. The touch control circuit board 1 is completely fixed in the cavity of the face frame 2 without any moving space. When the incoming material has a negative tolerance of 0.45, due to the unilateral interference amount of the elastic pad 4 (such as 0.225 mm), the elastic pad 4 can just fill the assembly gap, so that the touch control circuit board 1 is also completely fixed in the cavity without any moving space, thereby improving the touch accuracy and the user experience.
[0041] It can be understood that regardless of the size of the incoming material of the touch control circuit board 1, it cannot move in the cavity of the face frame 2 and has no moving space. This limiting structure has high touch positioning accuracy and accurate positioning.
[0042] In practical applications, the elastic pad 4 can be an EVA elastic pad made of ethylene-vinyl acetate copolymer (EVA). The elastic pad 4 can be first pasted on the limiting rib 31 of the corner cover 3 in a single-sided adhesive manner, and then the corner cover 3 with the elastic pad 4 pasted on it is fixed at the corner of the face frame 2, and the corner cover 3 is fixed with screws.
[0043] The elastic pad 4 in the embodiment of the present utility model can be square or L-shaped. In practical applications, in order to facilitate the layout of the wiring, an L-shaped elastic pad can be used.
[0044] It can be seen that the touch control circuit board in the touch control module in the embodiment of the present utility model can be combined with the face frame through the card slot inside the face frame. A corner cover is provided at each corner of the face frame, and an elastic pad is provided on the limiting rib of each corner cover. The elastic pad contacts the touch control circuit board, so that the touch control circuit board can be limited by the elastic pad. Since the elastic pad has a certain stretchability, it can not only meet the tolerance of the touch control circuit board, but also fill the assembly gap. Therefore, the touch control circuit board can be better limited, making the touch control circuit board unable to move and having no movable space, effectively avoiding touch deviation and improving the user experience.
[0045] Based on the above embodiments, on the other hand, the present utility model provides a touch screen. For details, please refer to Figure 9 , which includes a display screen A and the touch control module B as described above.
[0046] It should be noted that the touch screen in the embodiments of the present utility model has the same beneficial effects as the touch control module provided in the above embodiments. For the specific introduction of the touch control module involved in the embodiments of the present utility model, please refer to the above embodiments, and this application will not elaborate herein.
[0047] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple. For the relevant parts, please refer to the description in the method part.
[0048] It should also be noted that in this specification, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of another identical element in the process, method, article or device including the said element.
[0049] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A touch module, characterized in that: include: A touch circuit board, a face frame, a plurality of corner covers and a plurality of elastic pads, wherein a card slot is provided on the inner side of the face frame, and the touch circuit board is combined with the face frame through the card slot, each of the corner covers is arranged at each corner of the face frame in a one-to-one correspondence, and each of the elastic pads is arranged on the limiting rib of the corner cover in a one-to-one correspondence, and the elastic pad contacts one end of the touch circuit board.
2. The touch module according to claim 1, characterized in that: The elastic pad is arranged on the limiting rib of the litigation corner cover.
3. The touch module according to claim 2, characterized in that: The elastic pad is adhered to the limiting rib of the corner cover by means of single-sided adhesive.
4. The touch module according to claim 1, characterized in that: The elastic pad is an L-shaped elastic pad.
5. The touch module according to claim 4, characterized in that: The unilateral interference of the elastic pad is 0.225±amm, a∈[0,0.1].
6. The touch module according to claim 1, characterized in that: The thickness of the elastic pad is 2.5 mm.
7. The touch module according to claim 1, characterized in that: The elastic pad is made of an elastic material with a compression rate of 60±b% to 70±b%, wherein b∈[0,1].
8. The touch module according to claim 1, characterized in that: The elastic pad is an elastic pad made based on ethylene-vinyl acetate copolymer.
9. The touch module according to claim 1, characterized in that: The corner cover is fixed at the corner of the face frame by screws.
10. A touch screen, characterized in that: It comprises a display screen and a touch module as claimed in any one of claims 1 to 9.