Anti-electric shock switch panel with replaceable key board
By designing a detachable control module and power module on the switch panel, combining the hook structure and elastic arm limit, the risk of electric shock during the removal of the key board is solved, and the safe replacement and simplified structure of the key board are realized, which is suitable for smart homes. need.
Patent Information
- Application Number
- CN202420614698.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-27
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-03-27
AI Technical Summary
The strong and weak-current non-isolation design of the switch panel on the market leads to the risk of electric shock when the key plate is disassembled, making it difficult to find a balance between ensuring the replaceability and safety of the key plate.
A key plate including a control module and a power module is designed, which can be installed detachably. By setting fixing screws on the back of the front housing module, the key plate is locked with the front housing module, and is connected through the hook structure and elastic arm. Implement the movable limit of the key board to ensure that the strong and weak electric separation is achieved first during disassembly to avoid electric shock.
It realizes the separation of strong and weak electricity when the button plate is disassembled, ensures user safety, simplifies structural design, reduces production costs, and facilitates the popularization of smart homes.
Smart Images
Figure CN222146023U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of switch panels, in particular to an anti-electric shock switch panel with a replaceable key plate. Background Art
[0002] With the popularity of smart homes, users have increasing demands for functionality and personalization of switch panels. For example, consumers usually want to laser engrave indicator text on the panel to distinguish various functions and scenarios. However, since users usually have unclear text definitions and scenario requirements for the whole house panel at the purchase stage, they need to define them according to actual application conditions after installation and use for a period of time. This requires that the keypad of the switch panel has the function of disassembly and replacement, and the replacement process should be convenient and not cumbersome.
[0003] However, many switch panels on the market use a non-isolated power supply design for strong and weak electricity, which means that there is strong electricity under the keypad. This design has safety issues. If the keypad is easily disassembled, it may increase the risk of electric shock. Therefore, how to ensure the replaceability of the keypad while preventing electric shock has become an urgent problem to be solved. Utility Model Content
[0004] The utility model aims to provide an anti-electric shock switch panel with a replaceable keypad, which adopts a non-isolated power supply design and realizes separation of strong and weak current modules when the keypad is disassembled, so that removing the keypad will not cause electric shock.
[0005] To achieve the above-mentioned purpose, the solution of the utility model is: an anti-electric shock switch panel with a replaceable keypad, comprising a control module and a power module, wherein the control module is detachably mounted on the front side of the power module;
[0006] The control module comprises a front shell module and a keypad which are arranged in sequence from back to front, the keypad is detachably connected to the front shell module, a stud is arranged on one side of the keypad corresponding to the front shell module, a mounting hole which passes through the front and back sides of the front shell module is opened at a position corresponding to the stud, a fixing screw passes through the mounting hole from the back of the front shell module and is screwed to the stud on the keypad to lock the keypad and the front shell module, and the back of the front shell module is detachably connected to the front side of the power module to hide the fixing screw;
[0007] When the keypad needs to be removed, first separate the control module from the power module to achieve forced separation of strong and weak electricity, then loosen the fixing screws and remove the keypad from the front shell module, and vice versa to install the keypad.
[0008] Furthermore, the front shell module includes a front shell and a fixing seat, a PCB board is provided between the fixing seat and the front shell, and the fixing seat is fixedly connected to the front shell, so that the PCB board is fixed on the front shell;
[0009] The keypad is detachably mounted on the front side of the fixing seat, the mounting hole is located on the front shell, the fixing screws pass through the mounting hole from the back of the front shell and are screwed to the studs on the keypad to lock the keypad and the front shell, and the back of the front shell is detachably connected to the front side of the power module to hide the fixing screws.
[0010] Furthermore, a matching hole is provided on the fixing seat at a position corresponding to the stud, and the matching hole is used to avoid the stud.
[0011] Furthermore, a through hole is provided on the PCB board at a position corresponding to the mounting hole, and the through hole is used to avoid fixing screws.
[0012] Furthermore, the key panel is detachably mounted on the front side of the fixing seat through a hook structure. The specific structure is: a hook is provided on the side of the key panel facing the fixing seat, and the fixing seat is provided with a hook groove at a position corresponding to the hook. The hook passes through the hook groove and is hooked to the other side of the hook groove, thereby realizing the connection between the key panel and the fixing seat.
[0013] Furthermore, an elastic arm structure is provided between the key plate and the fixing seat, and the hook structure and the elastic arm structure movably limit the key plate on the fixing seat.
[0014] Furthermore, a positioning shaft is provided on one side of the key plate corresponding to the fixing plate, and a positioning hole is provided on the fixing seat at a position corresponding to the positioning shaft, and the positioning shaft cooperates with the positioning hole to achieve positioning.
[0015] Furthermore, a limit key is provided on the side of the positioning shaft on the key plate, and a key slot is provided on the fixing seat at a position corresponding to the limit key, and the limit key cooperates with the key slot to limit the rotation of the key plate.
[0016] Furthermore, there are two keypads, which are arranged in parallel on the front side of the fixing seat.
[0017] Furthermore, the detachable clip-on structure between the front shell module and the shell of the power module is specifically as follows: a plurality of first clip-on parts are provided around the front shell module, and a second clip-on part is provided on the shell of the power module at a position corresponding to the first clip-on part, and the shape and size of the second clip-on part match the first clip-on part, and the first clip-on part is aligned and connected with the second clip-on part, so as to fix the front shell module on the shell of the power module.
[0018] After adopting the above scheme, the beneficial effects of the utility model are:
[0019] The control module and the power module of the utility model are detachably installed, wherein the control module comprises a front shell module and a key board which are arranged in sequence from the back to the front, and the key board is detachably connected to the front shell module.
[0020] The method for realizing the separation of strong and weak electricity when disassembling the keypad of the utility model is that a fixing screw is provided on the back of the front shell module, and the fixing screw passes through the front shell module to further fix the keypad, and when the control module is connected to the power module, the fixing screw is hidden between the front shell module and the shell of the power module, and cannot be touched, and cannot be loosened. Then, when the keypad needs to be disassembled, the control module must be separated from the power module first, and then the strong and weak electricity can be forced to separate, and then the fixing screw is loosened, and the keypad is broken off from the front shell module, and the keypad can be replaced in situ. Since the strong and weak electricity have been forced to separate, it can be guaranteed that there will be no electric shock after the keypad is removed.
[0021] Compared with the existing complex structure for separation of strong and weak electricity, this design has a simpler structure and lower production cost, which is convenient for the popularization of smart homes. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a three-dimensional diagram of the switch panel structure of an embodiment of the utility model;
[0023] Figure 2 This is an exploded view of a control module of an embodiment of the utility model (front side perspective);
[0024] Figure 3 This is an exploded view of a control module of an embodiment of the utility model (from a rear side perspective);
[0025] Figure 4 This is an exploded view of the switch panel structure of an embodiment of the utility model (front side perspective);
[0026] Figure 5 This is an exploded view of the switch panel structure of an embodiment of the utility model (rear side perspective);
[0027] Figure 6 This is an embodiment of the utility model Figure 5 Sectional view of the middle control module on plane AA;
[0028] Figure 7 This is an embodiment of the utility model Figure 5 Sectional view of the BB surface of the central control module.
[0029] Description of labels:
[0030] 1. control module; 11. front housing; 111. mounting hole; 112. first clamping portion;
[0031] 12. PCB board; 121. Through hole;
[0032] 13. Fixed seat; 131. Matching hole; 132. Hook groove; 133. Elastic arm structure; 134. Key groove;
[0033] 14. key board; 141. stud; 142. hook; 143. limit key;
[0034] 15. Fixing screws;
[0035] 2. Power module; 21. Housing of the power module; 211. Second clamping portion. DETAILED DESCRIPTION
[0036] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.
[0037] The utility model provides an anti-electric shock switch panel with a replaceable keypad, such as Figures 1 to 7 As shown, it includes a control module 1 and a power module 2, each of which contains specific components and is electrically connected in a certain way. The control module 1 is detachably mounted on the front side of the power module 2, so that the two can be easily separated and assembled. This design makes it easy to separate the control module 1 from the power module 2 when the keypad 14 needs to be replaced, so as to separate strong and weak electricity, thereby ensuring the safety of the user.
[0038] Key References Figure 2 , 3 , 6 and 7, the control module 1 includes a front shell module and a keypad 14 arranged in sequence from back to front, the front shell module includes a front shell 11, a PCB board 12 and a fixing seat 13, wherein the front shell 11 as an external protection structure not only provides support and protection for the internal electronic components, but also realizes connection or separation with the power module 2 through a specific design. The PCB board 12 (printed circuit board) is the core component of the control module 1, on which various electronic components and circuits are distributed, responsible for realizing various functions of the switch panel. The fixing seat 13 is snap-connected with the front shell 11 to fix the PCB board 12 and ensure its stable position in the front shell 11. The keypad 14 is responsible for receiving the user's operating instructions and transmitting the signal to the PCB board 12 through actions such as pressing. The connection design between the fixing seat 13 and the front shell 11 can be selected as detachable or non-detachable according to actual needs and usage scenarios. In the detachable design, the fixing seat 13 and the front shell 11 can be connected by snaps, screws or other detachable connection methods. This design allows the fixing base 13 to be easily removed from the front shell 11, thereby facilitating maintenance, replacement or upgrading of the PCB board 12. In the non-detachable design, the fixing base 13 and the front shell 11 can be connected by welding, riveting or other fixed connection methods. This design makes the connection between the fixing base 13 and the front shell 11 more secure and not easy to loosen or fall off.
[0039] In this embodiment, there are two keypads 14, which are arranged in parallel on the front side of the fixing base 13. Each keypad 14 is detachably connected to the fixing base 13 via a hook 142 structure. Figure 2 and Figure 3 As shown, a hook 142 is provided on the side of the keypad 14 facing the fixing seat 13, and a hook groove 132 is provided on the fixing seat 13 at a position corresponding to the hook 142. The shape and size of these hook grooves 132 match the hook 142 on the keypad 14. When the keypad 14 is assembled with the fixing seat 13, the user only needs to align the hook 142 on the keypad 14 with the hook groove 132 on the fixing seat 13, and then press gently, and the hook 142 will pass through the hook groove 132 and be connected to the other side of the hook groove 132, thereby realizing the connection between the keypad 14 and the fixing seat 13. There is a certain amount of movable space between the hook 142 and the hook groove 132, and it is not completely stuck. When the user needs to replace the keypad 14, he only needs to break the keypad 14 off the fixing seat 13, which is convenient to operate.
[0040] However, when the user actually disassembles the keypad 14, he may omit the steps of separating the control module 1 and the power module 2, and separating the strong and weak electricity, so there is still a risk of electric shock. Therefore, the design of this case adds a fixing structure between the keypad 14 and the front shell 11. Specifically, a stud 141 is provided on the side of the keypad 14 corresponding to the front shell 11, and a mounting hole 111 that passes through the front and back is opened at the position corresponding to the stud 141 on the front shell 11. The fixing screw 15 passes through the mounting hole 111 from the back of the front shell 11 and is screwed to the stud 141 on the keypad 14 to lock the keypad 14 with the front shell 11. At the same time, the control module 1 is detachably connected to the front side of the power module 2. Specifically, the back of the front shell 11 is detachably connected to the front side of the power module 2. The purpose of this design is to hide the fixing screw 15 that fixes the keypad 14 between the front shell 11 and the housing 21 of the power module, so that it cannot be directly contacted or loosened, and the keypad 14 cannot be removed.
[0041] In this embodiment, the specific structure of the connection between the control module 1 and the power module 2 is as follows. Figure 4 and Figure 5 As shown, a plurality of first clamping parts 112 are provided around the front shell 11 of the control module 1, and a second clamping part 211 is provided at a position corresponding to the first clamping part 112 of the housing 21 of the power module. The shape and size of the second clamping part 211 match the first clamping part 112, ensuring smooth alignment and clamping during the clamping process. During the assembly process, the user only needs to align the second clamping part 211 of the power module 2 with the first clamping part 112 on the front shell 11 of the control module 1, and gently squeeze to connect the second clamping part 211 with the first clamping part 112, thereby fixing the front shell 11 on the housing 21 of the power module. During the separation process, the front shell 11 only needs to be broken off from the housing 21 of the power module.
[0042] If the keypad 14 needs to be removed, the control module 1 must be separated from the power module 2 first. At this time, the separation of strong and weak electricity is forcibly achieved. After separation, the fixing screws 15 are exposed, and the user can loosen the fixing screws 15 and then break the keypad 14 off the front shell 11 to achieve the removal of the keypad 14. Since the strong and weak electricity have been forcibly separated before loosening the screws, it can be guaranteed that there will be no electric shock after the keypad 14 is removed. If the keypad 14 needs to be installed, the operation is reversed. First, the replaced keypad 14 is snapped on the fixing seat 13, and then the fixing screws 15 and the studs 141 are locked from the back of the front shell 11, and then the entire control module 1 is snapped on the power module 2. Only then is the electricity connected, effectively avoiding the risk of electric shock to the user.
[0043] In order to adapt to the overall structure and ensure the coordination between the various components, the fixing seat 13 is provided with a matching hole 131. Figure 3 and Figure 6 As shown, the diameter of the matching hole 131 is larger than the outer diameter of the stud 141 of the key board 14, so that the stud 141 can pass through smoothly and avoid interference with the stud 141. At the same time, the diameter of the matching hole 131 is smaller than the outer diameter of the nut of the fixing screw 15 used to lock the key board 14. A through hole 121 is opened on the PCB board 12 to avoid the fixing screw 15. The diameter of the through hole 121 is larger than the outer diameter of the nut of the fixing screw 15, so that the fixing screw 15 can pass through the through hole 121 smoothly and will not interfere with the PCB board 12. The screw is locked on the stud 141 of the key board 14, and the nut contacts the end face of the stud 141 of the key board 14. When the key board 14 is triggered, it follows the key board 14 to press down.
[0044] like Figure 2 and Figure 3 As shown, an elastic arm structure 133 is provided between the key panel 14 and the fixing seat 13, and the hook 142 structure and the elastic arm structure 133 limit the key panel 14 to be movable on the fixing seat 13. The elastic arm structure 133 is usually made of an elastic material, such as a metal spring sheet or a polymer elastic material. When the user presses the key panel 14, the key panel 14 will move downward, and at the same time drive the elastic arm structure 133 to deform. When the key panel 14 triggers the corresponding contact point, the user releases the key panel 14. At this time, the elastic arm structure 133 uses its own elasticity to gradually restore its original shape, pushing the key panel 14 to rebound upward until the key panel 14 completely returns to the initial position. A positioning shaft is also provided on the key panel 14, and a positioning hole is opened at a position corresponding to the positioning shaft on the fixing seat 13, and the positioning shaft cooperates with the positioning hole to achieve positioning. A limit key 143 is disposed on the side of the positioning shaft of the key plate 14 , and a key slot 134 is provided on the fixing seat 13 at a position corresponding to the limit key 143 . The limit key 143 cooperates with the key slot 134 to limit the rotation of the key plate 14 .
[0045] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.
[0046] Meanwhile, the directions such as front, back, left, and right involved in this embodiment are only used as a reference for directions and do not represent directions in actual use. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0047] The above description is only a preferred embodiment of the present utility model and is not a limitation on the design of the present case. Any equivalent changes made based on the key design of the present case shall fall within the protection scope of the present case.
Claims
1. An anti-electric shock switch panel with replaceable keypad, characterized in that: It includes a control module and a power module, wherein the control module is detachably mounted on the front side of the power module; The control module comprises a front shell module and a keypad which are arranged in sequence from back to front, the keypad is detachably connected to the front shell module, a stud is arranged on one side of the keypad corresponding to the front shell module, a mounting hole which passes through the front and back sides of the front shell module is opened at a position corresponding to the stud, a fixing screw passes through the mounting hole from the back of the front shell module and is screwed to the stud on the keypad to lock the keypad and the front shell module, and the back of the front shell module is detachably connected to the front side of the power module to hide the fixing screw; When the keypad needs to be removed, first separate the control module from the power module to achieve forced separation of strong and weak electricity, then loosen the fixing screws and remove the keypad from the front shell module, and vice versa to install the keypad.
2. The anti-electric shock switch panel with replaceable keypad as claimed in claim 1, characterized in that: The front shell module comprises a front shell and a fixing seat, a PCB board is arranged between the fixing seat and the front shell, and the fixing seat is fixedly connected to the front shell, so as to fix the PCB board on the front shell; The keypad is detachably mounted on the front side of the fixing seat, the mounting hole is located on the front shell, the fixing screws pass through the mounting hole from the back of the front shell and are screwed to the studs on the keypad to lock the keypad and the front shell, and the back of the front shell is detachably connected to the front side of the power module to hide the fixing screws.
3. The anti-electric shock switch panel with replaceable keypad as claimed in claim 2, characterized in that: A matching hole is provided on the fixing seat at a position corresponding to the stud, and the matching hole is used to avoid the stud.
4. The anti-electric shock switch panel with replaceable keypad as claimed in claim 2, characterized in that: A through hole is provided at a position on the PCB board corresponding to the mounting hole, and the through hole is used to avoid fixing screws.
5. The anti-electric shock switch panel with replaceable keypad as claimed in claim 2, characterized in that: The keypad is detachably mounted on the front side of the fixing seat via a hook structure, and the specific structure is as follows: a hook is provided on the side of the keypad facing the fixing seat, and a hook groove is provided on the fixing seat at a position corresponding to the hook, and the hook passes through the hook groove and is hooked to the other side of the hook groove, thereby realizing the connection between the keypad and the fixing seat.
6. The anti-electric shock switch panel with replaceable keypad as claimed in claim 5, characterized in that: An elastic arm structure is arranged between the key plate and the fixing seat, and the hook structure and the elastic arm structure movably limit the key plate on the fixing seat.
7. The anti-electric shock switch panel with replaceable keypad as claimed in claim 6, characterized in that: A positioning shaft is provided on one side of the key plate corresponding to the fixing plate, a positioning hole is provided on the fixing seat at a position corresponding to the positioning shaft, and the positioning shaft cooperates with the positioning hole to achieve positioning.
8. The anti-electric shock switch panel with replaceable keypad as claimed in claim 7, characterized in that: A limit key is arranged on the side of the positioning shaft on the key plate, and a key slot is provided on the fixing seat at a position corresponding to the limit key, and the limit key cooperates with the key slot to limit the rotation of the key plate.
9. The anti-electric shock switch panel with replaceable keypad as claimed in claim 2, characterized in that: There are two keypads, which are arranged in parallel on the front side of the fixing seat.
10. The anti-electric shock switch panel with replaceable keypad as claimed in claim 1, characterized in that: The detachable clip-on structure between the front shell module and the shell of the power module is specifically as follows: a plurality of first clip-on parts are arranged around the front shell module, and a second clip-on part is arranged on the shell of the power module at a position corresponding to the first clip-on part, and the shape and size of the second clip-on part match the first clip-on part, and the first clip-on part is aligned and connected with the second clip-on part, so as to fix the front shell module on the shell of the power module.