Modular wall switch

Abstract

A modular wall switch includes a base with a connecting groove and a connector on its side. The connecting groove engages with the connector of an adjacent base to form a parallel connection with the adjacent base. The connector is a solid structure. The connecting groove on the adjacent base that engages with the connector has a snap-fit ​​deformation groove on its side facing away from the connector. The advantages of this invention are: by designing the connector as a solid structure, its mechanical strength and fatigue resistance are significantly enhanced, reducing the risk of fracture due to excessive stress, thereby improving the reliability and service life of the connection; the snap-fit ​​deformation groove effectively absorbs the deformation and stress generated during the snap-fit ​​process, avoiding stress concentration, preventing loosening or detachment of the connection, and ensuring the overall stability and safety of the switch module.

Description

Technical Field

[0001] This utility model relates to an installation structure for a wall switch, and more particularly to a modular wall switch. Background Technology

[0002] Chinese patent document CN217086409U discloses a wall switch connection structure, including a base. The base has a connecting groove and a connector on its side. The connecting groove is engaged with the connector of an adjacent base to form a parallel connection with the adjacent base. The base has an installation groove on the side of the connecting groove and the connector. An eccentric wheel is rotatably arranged in the installation groove. The connector is configured as two elastic connecting arms. The two connecting arms are elastically engaged in the connecting groove and elastically open to form a tension fit with the connecting groove.

[0003] This patented technology enables rapid assembly and installation of wall switches through the snap-fit ​​connection between elastic connecting arms and connecting slots, eliminating the need for junction boxes and simplifying the construction process. However, its connection method relies on the opposing movement of two connecting arms to form a tension fit. This design is prone to breakage of the connecting arms due to excessive stress or fatigue during installation or use, thereby weakening the connection strength and causing loosening or detachment, affecting the stability and safety of the overall switch module. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a splicing type wall switch that prevents the connecting arm from breaking and improves the connection strength.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a modular wall switch, comprising a base, wherein a connecting groove and a connector are provided on the side of the base, the connecting groove is engaged with the connector of an adjacent base to form a parallel connection with the adjacent base, the connector is a solid structure, and the connecting groove on the adjacent base that engages with the connector has a snap-fit ​​deformation groove on the side facing away from the connector.

[0006] The beneficial effects of this utility model are as follows: By designing the connector as a solid structure, its mechanical strength and fatigue resistance are significantly enhanced, reducing the risk of fracture due to excessive stress, thereby improving the reliability and service life of the connection; the snap-fit ​​deformation groove can effectively absorb the deformation and stress generated during the snap-fit ​​process, avoid stress concentration, prevent loosening or detachment of the connection, and ensure the overall stability and safety of the switch module. Furthermore, this structure simplifies the installation process and reduces maintenance requirements. As a preferred embodiment, the connector can be integrally molded from high-strength polymer material, with a solid cross-section ensuring uniform force distribution and reducing localized stress; the snap-fit ​​deformation groove can be designed as an arc-shaped groove located on the outside of the connection groove. When the snap-fit ​​force is applied, the material elastically deforms towards the groove, absorbing energy and returning to its original shape, achieving deformation buffering. As another preferred embodiment, reinforcing ribs can be added at the connection between the connector and the base to further improve torsional strength; the depth and shape of the snap-fit ​​deformation groove can be optimized according to material properties, for example, by adopting a gradual depth design to better adapt to deformation requirements under different installation conditions.

[0007] Furthermore, the connector includes a connecting rod and a snap-fit ​​rod. The connecting rod forms a right angle with the base, and the center of the snap-fit ​​rod is located at the end point of the connecting rod on the side away from the base and extends symmetrically towards both sides of the center line of the connecting rod.

[0008] By forming a right-angle structure between the connecting rod and the base, and through the symmetrical extension design of the snap-fit ​​rod, the overall rigidity and stability of the connector are enhanced. This results in a more uniform force distribution during snap-fitting, reducing the risk of eccentric loading and thus improving connection durability and vibration resistance. This T-shaped layout also simplifies manufacturing and assembly, reducing costs. As a preferred option, the connecting rod can have a rectangular cross-section and be integrally molded with the base using an injection molding process, ensuring the precision and strength of the right-angle connection. The symmetrical extension of the snap-fit ​​rod can be designed with tapered edges to reduce weight while maintaining strength. Its working principle is to avoid stress concentration on one side through symmetrical force distribution during snap-fitting. As another preferred option, the end of the snap-fit ​​rod can be rounded to reduce stress peaks. A metal reinforcement plate can be embedded internally at the connection between the connecting rod and the base, improving bending resistance through mechanical interlocking and ensuring structural integrity during repeated installations.

[0009] Furthermore, the connecting groove has a T-shaped cross-section, and the connecting rod and the snap-fit ​​rod, after being connected, also have a T-shaped cross-section. The snap-fit ​​rod is positioned facing the connecting groove on the adjacent base.

[0010] The T-shaped cross-section of the connecting groove and the connector provides a larger contact area and fitting depth, enhancing the firmness of the snap-fit ​​and effectively preventing detachment due to external forces. It also improves alignment accuracy and facilitates quick installation. This design also improves load distribution and reduces wear. As a preferred option, the T-shaped cross-section of the connecting groove can be designed as an inverted trapezoidal structure, with the snap-fit ​​rods correspondingly matched, achieving self-alignment and snap-fit ​​through a beveled guide. The working principle is that when the snap-fit ​​rod is inserted, the beveled surface generates radial force, ensuring a tight fit. As another preferred option, the inner wall of the connecting groove can be textured with anti-slip material to increase friction; the T-shaped portion of the snap-fit ​​rod can be coated with an elastic material, undergoing slight deformation during snap-fit ​​to fill gaps, enhancing sealing and resistance to loosening.

[0011] Furthermore, the latching rod is provided with a latch facing the connecting groove of the adjacent base, and the connecting groove of the adjacent base is provided with a latch step corresponding to the latch.

[0012] The interlocking mechanism between the snap-fit ​​and the snap-fit ​​step enhances the connection strength, prevents relative slippage or separation, and improves stability under dynamic loads. This design also allows for reversible installation, facilitating disassembly and maintenance. As a preferred option, the snap-fit ​​can be designed as a hook-shaped structure with a corresponding groove in the snap-fit ​​step. When the snap-fit ​​is inserted into the step, it generates a locking force through elastic deformation. The working principle is that during installation, the snap-fit ​​slides along the inclined surface of the step until it locks into place, forming a secure connection. Alternatively, the snap-fit ​​surface can be coated with a wear-resistant material to extend its service life; the snap-fit ​​step can be designed as a multi-level structure, providing multiple locking positions to accommodate different installation depth requirements.

[0013] Furthermore, the end faces of the buckle and the buckle step that mate are set at a matching inclination.

[0014] The inclined end face provides a guiding function, simplifying the snap-fit ​​process, reducing installation resistance, preventing jamming or damage, and ensuring alignment accuracy while improving operational efficiency. This design also reduces wear and extends component life. As a preferred option, the inclined end face can be designed with a 45-degree bevel, with the bevel of the snap-fit ​​and step matching to generate a smooth guiding force during insertion; the working principle is that the axial force is converted into radial force by the bevel, promoting self-alignment and smooth snap-fit. As another preferred option, the inclined end face can be coated with a lubricating coating to reduce friction; the end face shape can be optimized into a curved bevel to better distribute stress and prevent localized deformation.

[0015] Furthermore, the snap-fit ​​rod is provided with a reinforcing part connected to the snap fastener, and the reinforcing part is located in the direction of the snap fastener step to provide deformation force to the snap fastener.

[0016] The reinforcement specifically enhances the deformation resistance of the snap-fit ​​area, preventing fatigue fracture caused by repeated stress and ensuring long-term reliability. This design optimizes the force transmission path and reduces stress concentration. As a preferred approach, the reinforcement can be designed as a rib structure, extending from the root of the snap-fit ​​to the main body of the snap-fit ​​rod, increasing stiffness by increasing the section modulus; its working principle is that when the snap-fit ​​is under load, the reinforcement absorbs and disperses deformation forces, avoiding local overload. As another preferred approach, the reinforcement can be made of composite material lamination, providing anisotropic strength; its layout can have a gradually varying thickness along the force direction to match the load distribution and ensure uniform stress.

[0017] Furthermore, one end face of the connecting groove is an entry surface that mates with the connecting rod of the adjacent base, and the cross-sectional shape of the entry surface is adapted to the connecting rod. The other end face of the connecting groove is a limiting surface that mates with one end face of the connecting rod of the adjacent base to achieve a limiting position, and the cross-section of the limiting surface is smaller than the cross-section of the connecting rod.

[0018] The design of the entry and limiting surfaces ensures precise guidance and final positioning of the connecting rod, preventing over-insertion or misalignment and improving installation accuracy and connection stability. This structure also provides visual and tactile feedback for easy confirmation of proper installation. As a preferred approach, the entry surface can be designed in a flared shape, gradually narrowing to guide the connecting rod into alignment; the limiting surface is a vertical baffle with a slightly smaller cross-section, preventing further movement when the connecting rod contacts it; the working principle is to achieve reliable positioning through geometric constraints. Alternatively, the entry surface can have guide grooves to match the connecting rod profile; the limiting surface can be fitted with an elastic buffer layer to absorb impact upon contact and prevent damage from hard collisions.

[0019] Furthermore, the snap-fit ​​deformation groove includes a straight groove and inclined grooves respectively connected to both ends of the straight groove. The center line of the straight groove coincides with the center line of the connecting groove. The width of the straight groove is greater than the width of the widest part of the connecting groove. The straight groove and the inclined groove cooperate to form a connection groove.

[0020] The combination of straight and inclined grooves optimizes deformation absorption efficiency, provides greater deformation space and stress release paths, reduces peak stress during clamping, and prevents material fatigue and damage. This design also improves adaptability to various installation conditions. As a preferred approach, the straight groove can be designed with a rectangular cross-section, and the inclined groove can be joined at a 45-degree angle to form a continuous transition; the working principle is that when the connecting groove is loaded, the material deforms in the direction of the straight and inclined grooves, uniformly distributing stress. As another preferred approach, flexible filler can be placed in the straight groove to enhance the damping effect; the angle of the inclined groove can be adjusted according to the elastic modulus of the material to maximize deformation absorption, for example, using an arc-shaped inclined groove to provide a smooth stress transition. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a partial enlarged view of the connecting portion in an embodiment of the present utility model; Figure 3 This is a partial enlarged view of the connector in an embodiment of this utility model; Figure 4 This is a partial enlarged view of the inlet surface of the connecting groove in an embodiment of this utility model; Figure 5 This is a partial enlarged view of the limiting surface of the connecting groove in an embodiment of this utility model. Detailed Implementation

[0022] This utility model embodiment provides a modular wall switch, such as... Figure 1-5 As shown: A base 1 is included, which is a conventional mounting base, typically made of insulating material, used to fix the switch assembly and provide structural support. A connecting groove 11 and a connector 12 are provided on the side of the base 1, located on opposite or adjacent sides of the base to facilitate side-by-side splicing of multiple bases 1. The connector 12 is a solid structure made of high-strength material to enhance its mechanical strength and durability. A snap-fit ​​deformation groove 13 is provided on the side of the connecting groove 11 facing away from the connector 12. The snap-fit ​​deformation groove 13 is adjacent to the connecting groove 11 and is used to absorb deformation during the snap-fit ​​process, preventing structural damage.

[0023] The connector 12 specifically includes a connecting rod 121 and a snap-fit ​​rod 122. The connecting rod 121 forms a right-angle fixed connection with the base 1 to ensure stable orientation. The center of the snap-fit ​​rod 122 is located at the end point of the connecting rod 121 on the side away from the base 1, and extends symmetrically to both sides of the center line of the connecting rod 121, thus making the connector 12 have a T-shaped structure, increasing the connection stability and torsional resistance with the adjacent base. The connecting groove 11 also has a T-shaped cross-section to match the T-shaped cross-section of the connector 12. The snap-fit ​​rod 122 is positioned towards the connecting groove 11 on the adjacent base, so that the wider side of the snap-fit ​​rod 122 can be embedded into the connecting groove 11, achieving a reliable snap-fit ​​fit and preventing it from falling off.

[0024] A latch 1221 is provided on the latching rod 122, protruding towards the connecting groove 11 of the adjacent base. A latch step 111 is provided in the connecting groove 11 of the adjacent base corresponding to the latch 1221. The latch step 111 and the latch 1221 cooperate with each other to further enhance the connection strength. The mating end faces of the latch 1221 and the latch step 111 are inclined in a matching manner. This inclined design serves as a guide during the latching process, facilitating smooth insertion and alignment. A reinforcing part 1222 connected to the latch 1221 is also provided on the latching rod 122. The reinforcing part 1222 is positioned in the direction opposite to the deformation force exerted on the latch 1221 by the latch step 111, thereby increasing the bending strength of the latch 1221 and preventing it from breaking under stress.

[0025] One end face of the connecting groove 11 is an entry surface 112, the cross-sectional shape of which is adapted to the connecting rod 121, facilitating the insertion of the connecting rod 121 into the connecting groove 11. The other end face of the connecting groove 11 is a limiting surface 113, the cross-section of which is smaller than that of the connecting rod 121. When the connecting rod 121 contacts the limiting surface 113, axial limiting is achieved, and the connection is reinforced by the cooperation of the snap fastener 1221 and the snap fastener step 111. The snap-fit ​​deformation groove 13 includes a straight groove 131 and inclined grooves 132 connected to both ends of the straight groove 131. The centerline of the straight groove 131 coincides with the centerline of the connecting groove 11. The width of the straight groove 131 is greater than the width of the widest part of the connecting groove 11. The straight groove 131 and the inclined groove 132 cooperate to surround the connecting groove 11, thereby improving the deformation absorption efficiency and dispersing stress.

[0026] The assembly process in this embodiment is as follows: Align the connector 12 of one base 1 with the connecting groove 11 of the adjacent base 1. Insert the connecting rod 121 into the connecting groove 11 from the entry surface 112 until the connecting rod 121 contacts the limiting surface 113, achieving initial limiting. Simultaneously, the latch 1221 of the latching rod 122 engages with the latch step 111 under the guidance of the inclined end face, completing the fastening connection. During the latching process, any deformation generated is absorbed by the straight groove 131 and inclined groove 132 of the latching deformation groove 13, ensuring a firm and undamaged connection. This design allows for quick and reliable assembly and is suitable for various installation scenarios.

[0027] As a preferred method, the connector 12 and the connecting groove are arranged in a mirror image symmetrically on both sides of the base 1 with the center point of the base 1 as the symmetrical point. This arrangement allows for the splicing of connected switches through identical bases 1.

[0028] The above embodiments are merely one preferred embodiment of the present utility model. Ordinary changes and substitutions made by those skilled in the art within the scope of the present utility model's technical solution are all included within the protection scope of the present utility model.

Claims

1. A spliced wall switch comprising a base, the base is provided with a connecting groove and a connecting piece on the side, the connecting groove and the connecting piece of the adjacent base are clamped to form a side-by-side connection with the adjacent base, characterized in that: The connector is a solid structure, and the connecting groove on the adjacent base that forms a snap-fit ​​with the connector has a snap-fit ​​deformation groove on the side facing away from the connector.

2. The tiled wall switch of claim 1, wherein: The connector includes a connecting rod and a snap-fit ​​rod. The connecting rod forms a right angle with the base. The center of the snap-fit ​​rod is located at the end point of the connecting rod on the side away from the base and extends symmetrically towards both sides of the center line of the connecting rod.

3. The tiled wall switch of claim 2, wherein: The connecting groove has a T-shaped cross-section, and the connecting rod and the snap-fit ​​rod have the same T-shaped cross-section after being connected. The snap-fit ​​rod is positioned facing the connecting groove on the adjacent base.

4. The tiled wall switch of claim 3, wherein: The latching rod is provided with a latch facing the connecting groove of the adjacent base, and the connecting groove of the adjacent base is provided with a latch step corresponding to the latch.

5. The tiled wall switch of claim 4, wherein: The end faces of the buckle and the buckle step that mate are set at a matching inclination.

6. The tiled wall switch of claim 4, wherein: The snap-fit ​​rod is provided with a reinforcing part that is connected to the snap fastener. The reinforcing part is located in the direction of the snap fastener deformation force on the snap fastener step.

7. The tiled wall switch of claim 4, wherein: One end face of the connecting groove is an entry surface that mates with the connecting rod of the adjacent base, and the cross-sectional shape of the entry surface is adapted to the connecting rod. The other end face of the connecting groove is a limiting surface that mates with one end face of the connecting rod of the adjacent base to achieve a limiting position, and the cross-section of the limiting surface is smaller than the cross-section of the connecting rod.

8. The tiled wall switch of claim 3, wherein: The snap-fit ​​deformation groove includes a straight groove and inclined grooves respectively connected to both ends of the straight groove. The center line of the straight groove coincides with the center line of the connecting groove. The width of the straight groove is greater than the width of the widest part of the connecting groove. The straight groove and the inclined groove cooperate to form a connection groove.

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