Force sensing switch panel

Abstract

The utility model discloses a kind of force response switch panels, belong to pressure-sensitive key switch field. Including panel shell, support plate, control PCB board, panel shell has more than one key position, support plate is stacked and set below panel shell, and support plate is opened with avoidance through slot, and force guide column is set in avoidance through slot, force guide column is located the directly below of key position, control PCB board is stacked and set below support plate, and is fixed on support plate, force sensor is connected with force guide column on control PCB board and is matched with force guide column. When user presses the key position on panel shell, it can accurately pass through force guide column and transmit pressing force to force sensor on control PCB board, can accurately trigger force sensor, improve the sensitivity of switch trigger;At the same time, since force guide column corresponds with key position, when user presses other position outside key position, then force will not be transmitted to force sensor through force guide column, so as to avoid false touch switch.

Description

Technical Field

[0001] This utility model belongs to the field of pressure-sensitive push button switches, and specifically relates to a force-sensitive switch panel. Background Technology

[0002] Switch panels, as commonly used electronic components, are widely used in industrial production, smart homes, and other fields. In traditional switch panels, the buttons are embedded in the panel shell. Due to the gap between the two, the waterproof and dustproof performance is usually not ideal. In order to improve the waterproof performance, a relatively complex structure is often required inside the panel, resulting in a bulky switch panel with poor aesthetics.

[0003] Force-sensitive switch triggering eliminates the need for physical buttons embedded in the panel housing. When applied to switch panels, this results in a one-piece structure, ensuring waterproofing while simplifying the overall product structure and reducing thickness, leading to a more minimalist and aesthetically pleasing design with broad application prospects. However, because the force sensor in a force-sensitive switch is typically located on a PCB board within the panel and not directly exposed, the trigger position is not intuitive for users, and force transmission is not direct enough. This can easily lead to accidental activation or insufficient sensitivity, causing inconvenience. Therefore, resolving this issue remains a challenge that current technology cannot avoid. Utility Model Content

[0004] To address the aforementioned issues, the present invention aims to provide a force-sensitive switch panel that can accurately transmit the user's pressing pressure to the force sensor on the PCB board via a force guide column, thereby preventing accidental touches and improving the sensitivity of the switch trigger.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] This utility model provides a force-sensing switch panel, comprising:

[0007] A panel housing having one or more button positions;

[0008] A support plate is stacked below the panel shell, and the support plate has an avoidance groove at the position corresponding to the button position. A guide column is provided in the avoidance groove and the guide column is located directly below the button position.

[0009] A control PCB board is stacked below the support plate and fixed to the support plate. A force sensor that cooperates with the force guide column is connected to the control PCB board. When the user presses the button, the pressing force is transmitted from the panel shell and the force guide column to the force sensor. The force sensor generates a signal output to the control PCB board to trigger the switch.

[0010] Furthermore, the panel shell has a groove at the position of the button, so that the thickness of the button position is less than the overall thickness of the panel shell. The groove design can reduce the thickness of the button position, and the button position is more likely to move slightly towards the guide column when it is pressed. The pressing pressure is more easily transmitted to the force sensor through the guide column, which can improve the sensitivity of the switch trigger.

[0011] Furthermore, the groove is formed on the back of the panel shell, and the side of the force guide post close to the panel shell is attached to the bottom wall of the groove. When the button is pressed, the force can be directly transmitted to the force guide post through the bottom wall of the groove, making the force transmission more direct.

[0012] Furthermore, a spring arm is horizontally arranged inside the clearance groove. One end of the spring arm is connected to the guide column, and the other end is connected to the inner wall of the clearance groove, so that the guide column can move slightly up and down relative to the support plate through the spring arm.

[0013] Furthermore, the top surface of the guide post is fixed to the inner wall of the groove by means of adhesive bonding or other methods. Since the panel shell is usually thin, when pressed, the panel shell where the button is located will undergo a slight displacement on the side where the guide post is located based on the pressure, thereby causing a slight displacement of the guide post on the back side, which facilitates the transmission of force to the force sensor.

[0014] Furthermore, a deformation groove is formed by hollowing out the control PCB board, and a cantilever is provided on the deformation groove. One end of the cantilever is connected to the inner wall of the deformation groove, and the position of the cantilever corresponds to that of the force guide column. The force sensor is attached to the surface of the cantilever. Through this structural arrangement, the force guide column can transmit pressure to the cantilever by making active contact with it. Since one end of the cantilever is suspended in the deformation groove, it will undergo slight deformation or displacement when subjected to force. Correspondingly, the force sensor on the cantilever will also deform or displace, generating a signal to trigger the switch. The cantilever structure makes it easier for the force sensor to deform or displace, making the switch triggering more sensitive.

[0015] Furthermore, the force-sensing switch panel includes a base, and the panel shell, bracket plate and control PCB board are fixed together by screws and then installed in the base by screws.

[0016] The beneficial effects of this utility model are as follows: Compared with the prior art, this application sets the force guide column directly below the button position. When the user presses the button position on the panel shell, the force guide column can accurately transmit the pressing force to the force sensor on the control PCB board, which can accurately trigger the force sensor and improve the sensitivity of the switch triggering. At the same time, since the force guide column corresponds to the button position, when the user presses other positions besides the button position, the force will not be transmitted to the force sensor through the force guide column, thereby avoiding accidental switch activation. Attached Figure Description

[0017] Figure 1 This is a structural diagram of a force-sensing switch panel.

[0018] Figure 2 yes Figure 1 Exploded view.

[0019] Figure 3 yes Figure 1 Cross-sectional view.

[0020] Figure 4 This is a structural diagram of the back of the panel shell.

[0021] Figure 5 This is a structural diagram of the support plate.

[0022] Figure 6 This is a schematic diagram of the control PCB board.

[0023] Figure 7 This is a schematic diagram of force transmission on a force-sensing switch panel.

[0024] In the diagram: 1. Panel shell; 11. Button position; 12. Groove; 2. Support plate; 21. Clearance groove; 3. Force guide column; 4. Control PCB board; 41. Deformation groove; 42. Cantilever; 5. Force sensor; 6. Elastic arm; 7. Base. Detailed Implementation

[0025] 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 merely illustrative of the present utility model and are not intended to limit the present utility model.

[0026] To achieve the above objectives, the technical solution of this utility model is as follows:

[0027] See Figure 1-7 As shown, this embodiment provides a force-sensing switch panel, including:

[0028] A panel housing 1, wherein the panel housing 1 has one or more button positions 11;

[0029] A support plate 2 is stacked below the panel shell 1, and the support plate 2 has an avoidance groove 21 at the position corresponding to the button position 11. A guide post 3 is provided in the avoidance groove 21 and the guide post 3 is located directly below the button position 11.

[0030] A control PCB board 4 is stacked below the support plate 2 and fixed on the support plate 2. A force sensor 5 that cooperates with the guide column 3 is connected to the control PCB board 4. When the user presses the button 11, the pressing force is transmitted from the panel shell and the guide column to the force sensor on the control PCB board 4. The force sensor generates a signal output to the control PCB board to trigger the switch.

[0031] In this application, by placing the force guide post 3 directly below the button position 11, when the user presses the button position 11 on the panel shell 1, the force guide post 3 can accurately transmit the pressing force to the force sensor 5 on the control PCB board 4, which can accurately trigger the force sensor 5. The force sensor generates a signal and outputs it to the corresponding control chip on the control PCB board. The chip processes the signal and triggers the switch, thereby improving the sensitivity of the switch triggering. At the same time, since the force guide post 3 corresponds to the button position 11, when the user presses other positions besides the button position 11, the force will not be transmitted to the force sensor 5 through the force guide post 3, thereby avoiding accidental switch activation.

[0032] Furthermore, the panel shell 1 has a groove 12 at the position of the button 11, so that the thickness of the position of the button 11 is lower than the overall thickness of the panel shell 1. The groove design can reduce the thickness of the button 11, and the button 11 is more likely to move slightly towards the guide force column 3 when it is pressed. The pressing force is more easily transmitted to the force sensor 5 through the guide force column 3, which can improve the sensitivity of the switch trigger.

[0033] Furthermore, the groove 12 is formed on the back of the panel shell 1, and the side of the force guide post 3 close to the panel shell 1 is attached to the bottom wall of the groove 12. When the button 11 is pressed, the force can be directly transmitted to the force guide post 3 through the bottom wall of the groove 12, making the force transmission more direct.

[0034] Furthermore, a spring arm 6 is horizontally arranged in the clearance groove 21. One end of the spring arm 6 is connected to the guide column 3, and the other end is connected to the inner sidewall of the clearance groove 21, so that the guide column 3 can move slightly up and down relative to the support plate through the spring arm 6.

[0035] Furthermore, the top surface of the guide post 3 is contacted and fixed to the inner wall of the groove 12 by means of bonding or other methods. Since the panel shell 1 is usually thin, when it is pressed, the panel shell 1 where the button position 11 is located will undergo a slight displacement on the side where the guide post 3 is located based on the pressure, thereby driving the guide post 3 on the back side to undergo a slight displacement, which facilitates the transmission of force to the force sensor 5.

[0036] In this application, to ensure that the force guide column 3 can smoothly transmit pressure to the force sensor 5, the force guide column 3 needs to be able to move slightly to touch the control PCB board 4 or the force sensor 5. Therefore, in this application, whether the force guide column 3 is mounted on the bracket plate 2 via the elastic arm 6 or directly attached to the back of the panel shell 1, the purpose is to allow the force guide column 3 a certain amount of room to move, thereby facilitating the transmission of force. It should be noted that the technical solutions for realizing the movement of the force guide column 3 are not limited to the above two, and other technical solutions that can realize the movement of the force guide column 3 should also be within the scope of protection of this application.

[0037] Furthermore, a deformation groove 41 is formed by hollowing out the control PCB board 4. A cantilever 42 is provided on the deformation groove 41. One end of the cantilever 42 is connected to the inner wall of the deformation groove 41. The cantilever 42 corresponds to the position of the force guide column 3, and the force sensor 5 is attached to the surface of the cantilever 42. Through the above structure, the force guide column 3 can transmit the pressure to the cantilever 42 by moving and contacting it. Since one end of the cantilever 42 is suspended in the deformation groove 41, it will undergo slight deformation or displacement when subjected to force. Correspondingly, the force sensor 5 on the cantilever 42 will also deform or displace, generating a signal to trigger the switch. The cantilever 42 structure makes it easier for the force sensor 5 to deform or displace, making the switch triggering more sensitive. It should be noted that in specific products, as long as the force sensor 5 is given a space for deformation or displacement, it can be easily triggered. The aforementioned deformation groove 41 and cantilever 42 structure is only one implementation method. Other implementation methods with the same function and principle should also be within the scope of protection of this application.

[0038] Furthermore, the force-sensing switch panel includes a base 7, and the panel shell 1, bracket plate 2 and control PCB board 4 are fixed together by screws and then installed on the base 7 by screws.

[0039] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A force-sensing switch panel, characterized in that, include: A panel housing having one or more button positions; A support plate is stacked below the panel shell, and the support plate has an clearance groove at the position corresponding to the button position. A force guide column is provided in the clearance groove and the force guide column is located directly below the button position. A control PCB board is stacked below the support plate and fixed to the support plate. A force sensor that cooperates with the force guide column is connected to the control PCB board. When the user presses the button, the pressing force is transmitted from the panel shell and the force guide column to the force sensor. The force sensor generates a signal and outputs it to the control PCB board to trigger the switch.

2. A force-sensing switch panel as described in claim 1, characterized in that, The panel shell has a groove at the button position, so that the thickness at the button position is lower than the overall thickness of the panel shell.

3. A force-sensing switch panel as described in claim 2, characterized in that, The groove is formed on the back of the panel shell, and the side of the force guide post closest to the panel shell is attached to the bottom wall of the groove.

4. A force-sensing switch panel as described in claim 1, characterized in that, A spring arm is horizontally arranged inside the clearance groove. One end of the spring arm is connected to the guide column, and the other end is connected to the inner wall of the clearance groove, so that the guide column can move slightly up and down relative to the support plate through the spring arm.

5. A force-sensing switch panel as described in claim 2, characterized in that, The top surface of the guide post is fixed to the inner wall of the groove by adhesive bonding.

6. A force-sensing switch panel as described in claim 1, characterized in that, The control PCB board is hollowed out to form a deformation groove, and a cantilever is provided on the deformation groove. One end of the cantilever is connected to the inner wall of the deformation groove. The position of the cantilever corresponds to that of the force guide column, and the force sensor is attached to the surface of the cantilever.

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