Novel microswitch
By setting up glue connection flanges and wedge grooves on the outer shell of the micro switch, adding solid connection holes, and using the clamping jaws and positioning column structure, the problem of excessive size of the existing micro switch is solved, achieving a tighter Connection and higher assembly accuracy improve waterproof performance and product quality.
Patent Information
- Application Number
- CN202420976585.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-08
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-08
AI Technical Summary
The existing micro switches are too large in a specific installation environment, resulting in the need to abandon some parts and process adjustments, and lack a new micro switch with small size, simple structure and excellent performance.
A new micro switch was designed to increase the contact area with soft rubber by setting the rubber connection flange and wedge groove on the inner side of the rubber injection groove of the shell, and set the solid connection hole at the four corners to enhance the solid connection. Clutch claws and positioning columns are installed on the inner wall of the shell to ensure installation accuracy and strength, and are packaged using secondary injection and potting.
It realizes a firm connection between soft glue and the shell, improves waterproof sealing performance and assembly accuracy, simplifies the process flow, reduces the processing difficulty of PCB boards, and improves product quality.
Smart Images
Figure CN222281804U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of vehicle switches, and in particular relates to a novel micro switch. Background Art
[0002] As a simple and reliable breaking component, micro switches are widely used in various industries, especially in the low-voltage electrical industry. Most circuit breakers with automatic reclosing function rely on the switching of micro switches set on the control circuit board to identify signals.
[0003] The existing micro switches are too large in size for specific installation environments, but reducing the size means giving up the installation of some parts and the matching process adjustments. Therefore, it is necessary to design a new type of micro switch with small size, simple structure and excellent performance to solve the above problems. Utility Model Content
[0004] The utility model aims to provide a novel micro switch, aiming to solve the technical problems existing in the prior art.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A novel micro switch comprises a shell, a glue injection groove is provided at the top center of the shell, a circle of glue flange is arranged around the inner wall of the glue injection groove, a plurality of wedge-shaped grooves are provided at intervals on the surface of the glue flange, and fixing holes are provided at the four corners of the glue flange. The top of the shell is fixedly connected with soft glue by secondary glue injection molding, and the soft glue is completely filled into each of the wedge-shaped grooves and each of the fixing holes. A PCB board is fixedly installed inside the shell, a touch switch and a wiring harness are welded on the top of the PCB board, a button of the touch switch is located below the soft glue, and the bottom of the shell is encapsulated by potting glue.
[0007] In a preferred embodiment of the utility model, clamping claws are provided on the top of the inner wall of the shell and near the four corners, positioning columns are provided in the middle of the two clamping claws on the same side, and positioning grooves are provided in the middle of the left and right ends of the PCB board. The PCB board is positioned with the shell through the two positioning grooves and the two positioning columns.
[0008] In a preferred embodiment of the present invention, a circle of sealing protrusions is arranged along the four edges of the bottom of the soft glue, and the sealing protrusions are closely attached to the top of the PCB board.
[0009] In a preferred embodiment of the present invention, glue ports are provided at the four corners of the glue injection groove.
[0010] In a preferred embodiment of the present utility model, a wire groove is provided on one side of the bottom of the housing, and the wire harness passes through the wire groove and is led to the outside of the housing.
[0011] The beneficial effects of the utility model are:
[0012] 1. The utility model increases the contact area and connection structure between the shell and the soft glue by arranging a circle of glue connection flanges on the inner side of the glue injection groove of the shell, and arranges a plurality of wedge-shaped grooves at intervals, thereby ensuring that the soft glue is firmly and reliably connected to the shell after the secondary pouring to the top of the shell. Since the switch saves a press plate in the process, the structure is simpler than that of conventional switches. Therefore, in order to make the connection between the soft glue and the shell more firmly, fixing holes are arranged at the four corners of the connecting glue flanges. After the soft glue is injected and solidified, four soft glue columns that are more closely connected to the shell are formed, thereby further strengthening the connection between the soft glue and the shell, effectively preventing the soft glue from falling off, and improving the waterproof sealing performance of the switch;
[0013] 2. The utility model ensures consistent installation positions and product performance by cooperating the positioning column structure inside the shell with the PCB positioning hole; at the same time, the clamping claws are designed at four places, and the assembly strength is ensured by the inward direction of the clamping claws. Therefore, the processing difficulty of the PCB board can be reduced from the structural point of view, and the assembly accuracy of the switch is ensured, which is beneficial to further improve the product quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall planar structure of the utility model;
[0015] Figure 2 It is a schematic diagram of the three-dimensional explosion structure of the utility model;
[0016] Figure 3 It is a schematic diagram of the three-dimensional structure of the shell when viewed from above;
[0017] Figure 4 It is a schematic diagram of the three-dimensional structure of the shell when viewed from above;
[0018] Figure 5 This is a top view of the three-dimensional structure after adding soft glue to the shell;
[0019] Figure 6 This is a schematic diagram of the upward-looking three-dimensional structure after adding soft glue to the shell;
[0020] Figure 7 It is a schematic diagram of the three-dimensional structure of the PCB board.
[0021] Figure numerals; among them, 1, housing; 11, glue flange; 111, wedge-shaped groove; 12, fixing hole; 13, glue port; 14, glue injection groove; 15, clamping claw; 16, positioning column; 17, wire groove; 2, soft glue; 21, sealing glue protrusion; 3, touch switch; 4, PCB board; 41, positioning groove; 5, potting glue; 6, wiring harness. DETAILED DESCRIPTION
[0022] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the utility model will be briefly introduced below in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the utility model, but does not constitute a limitation of the utility model.
[0023] Example:
[0024] like Figure 1-7 As shown, this embodiment provides a novel micro switch, including a shell 1, a glue injection groove 14 is provided in the center of the top of the shell 1, a circle of glue flange 11 is provided around the inner wall of the glue injection groove 14, a plurality of wedge-shaped grooves 111 are provided on the surface of the glue flange 11, and fixing holes 12 are provided at the four corners of the glue flange 11. The top of the shell 1 is fixedly connected with soft glue 2 by secondary glue injection molding, and the soft glue 2 is completely filled into each wedge-shaped groove 111 and each fixing hole 12. A PCB board 4 is fixedly installed inside the shell 1, and a touch switch 3 and a wiring harness 6 are welded on the top of the PCB board 4. The button of the touch switch 3 is located below the soft glue 2, and the bottom of the shell 1 is encapsulated by a potting glue 5.
[0025] Specifically, a circle of glue flange 11 is provided on the inner side of the glue injection groove 14 of the shell 1, and a plurality of wedge-shaped grooves 111 are provided at intervals to increase the contact area and the connection structure between the shell 1 and the soft glue 2, thereby ensuring that the soft glue 2 is firmly and reliably connected to the shell 1 after being poured onto the top of the shell 1 for the second time. Since the switch saves a pressing plate in the process, the structure is simpler than that of a conventional switch, and the volume and height are lower than those of a conventional switch. Therefore, in order to make the connection between the soft glue 2 and the shell 1 more firmly, fixing holes 12 are provided at the four corners of the connecting glue flange. After the soft glue 2 is injected and cured, four columns of soft glue 2 are formed which are more closely connected to the shell 1, thereby further strengthening the fixing of the soft glue 2 and the shell 1, effectively preventing the soft glue 2 from falling off, and improving the waterproof sealing performance of the switch.
[0026] In a preferred embodiment of the utility model, further, a clamping claw 15 is provided on the top of the inner wall of the shell 1 and near the four corners, a positioning column 16 is provided in the middle of the two clamping claws 15 on the same side, and a positioning groove 41 is provided in the middle of the left and right ends of the PCB board 4. The PCB board 4 is positioned with the shell 1 through the two positioning grooves 41 and the two positioning columns 16.
[0027] Specifically, the positioning column 16 structure inside the housing 1 cooperates with the PCB positioning hole to ensure consistent installation position and product performance; at the same time, four clamping claws 15 are designed, and the assembly strength is ensured by the inward direction of the clamping claws 15. Therefore, the processing difficulty of the PCB board 4 can be reduced from the structural point of view, and the assembly accuracy of the switch is guaranteed, which is beneficial to further improve the product quality.
[0028] In a preferred embodiment of the utility model, further, a circle of sealing protrusions 21 are provided along the four edges of the bottom of the soft glue 2, and the sealing protrusions 21 are tightly attached to the top of the PCB board 4. By providing the sealing protrusions 21, it can cooperate with the PCB board 4 through the arc surface at the bottom to reduce the position requirements of assembly, thereby ensuring the consistent sealing position after assembly.
[0029] In a preferred embodiment of the present invention, further, glue outlets 13 are provided at the four corners of the glue injection groove 14. By providing four glue outlets 13, it is avoided that the glue outlets 13 affect the integrity of the soft glue 2, which is beneficial to exhaust processing during injection molding.
[0030] In a preferred embodiment of the present invention, further, a wire groove 17 is opened on one side of the bottom of the housing 1 , and the wire harness 6 passes through the wire groove 17 and is led to the outside of the housing 1 .
[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A new type of micro switch, characterized by: The invention comprises a shell (1), wherein a glue injection groove (14) is provided at the center of the top of the shell (1), a circle of glue flange (11) is arranged around the inner wall of the glue injection groove (14), a plurality of wedge-shaped grooves (111) are arranged at intervals on the surface of the glue flange (11), and fixing holes (12) are provided at the four corners of the glue flange (11), the top of the shell (1) is fixedly connected with soft glue (2) by secondary glue injection molding, and the soft glue (2) is completely filled into each of the wedge-shaped grooves (111) and each of the fixing holes (12), a PCB board (4) is fixedly installed inside the shell (1), a touch switch (3) and a wiring harness (6) are welded on the top of the PCB board (4), the button of the touch switch (3) is located below the soft glue (2), and the bottom of the shell (1) is encapsulated by potting glue (5).
2. A novel micro switch according to claim 1, characterized in that: The top of the inner wall of the housing (1) and near the four corners are provided with clamping claws (15), the middle parts of the two clamping claws (15) on the same side are provided with positioning columns (16), the middle parts of the left and right ends of the PCB board (4) are provided with positioning grooves (41), and the PCB board (4) is positioned with the housing (1) by matching the two positioning grooves (41) with the two positioning columns (16).
3. A novel micro switch according to claim 2, characterized in that: A circle of sealing protrusions (21) are arranged along the four edges of the bottom of the soft glue (2), and the sealing protrusions (21) are closely attached to the top of the PCB board (4).
4. A novel micro switch according to claim 3, characterized in that: Glue ports (13) are provided at the four corners of the glue injection groove (14).
5. A novel micro switch according to claim 1, characterized in that: A wire groove (17) is provided on one side of the bottom of the housing (1), and the wire harness (6) passes through the wire groove (17) and is led to the outside of the housing (1).