Normally closed switch with dustproof and waterproof functions
By using rubber pads and a raised joint to the sealing mechanism of the pressing head in the normally closed switch, combined with the design of the water drain tank, the problem of poor waterproof performance of the normally closed switch is solved, and higher sealing performance and waterproof effect are achieved.
Patent Information
- Application Number
- CN202323605156.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-28
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2033-12-28
AI Technical Summary
In some special use scenarios, the existing normally closed switch has poor waterproof performance and cannot meet the conditions of use, resulting in water vapor erosion of the switch and rust or short-circuiting the metal contacts inside.
A normally closed switch with dust-proof and waterproof function is designed, using rubber pads and a sealing mechanism with a raised head to ensure that the inside of the switch is in a sealed state, and the possible water vapor is discharged through the drain tank to improve the waterproof effect.
By improving the sealing performance and protection level of normally closed switches, water vapor corrosion is avoided, the service life of the switch is extended, and the normal operation of the switch is ensured in humid environments.
Smart Images
Figure CN222896618U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of normally closed switches, in particular to a normally closed switch with dustproof and waterproof functions. Background Art
[0002] A normally closed switch is a switch device that is in a closed state when no external force is applied, that is, the open circuit state of the switch. When someone turns the switch button or the switch is turned by an automatic device, the switch is converted to an open circuit. This type of switch is mainly used to control electrical devices in the circuit, such as light bulbs, motors, etc. When the circuit needs to be turned on or off, it can be achieved by operating the normally open switch. Compared with the normally open switch, the normally closed switch is in a closed state under normal circumstances.
[0003] There are many types of normally closed switches available. In some special usage scenarios, water vapor corrodes the switches, causing the internal metal contacts to rust or short-circuit, and the waterproof performance is poor, which cannot meet the usage conditions. Utility Model Content
[0004] The utility model discloses a normally closed switch with dustproof and waterproof functions, aiming to solve the technical problem that the existing normally closed switch has poor waterproof performance and cannot meet the use conditions. In some special use scenarios, water vapor corrodes the switch, causing the internal metal contacts to rust or short-circuit.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A normally closed switch with dustproof and waterproof functions, comprising a first shell and a second shell, a spring is arranged inside the second shell, a pressing head is sleeved on one end of the spring, a first electrode, a second electrode and a linkage block are arranged inside the second shell, and further comprising:
[0007] A sealing mechanism, the sealing mechanism comprising a rubber pad, a circular groove is opened on the inner circumferential outer wall of the second shell near the pressing head 3, the rubber pad is arranged in the circular groove, a protrusion is arranged on the circumferential inner wall of the rubber pad, the protrusion contacts the circumferential outer wall of the pressing head, a gasket is arranged between the circumferential inner wall of the circular groove and the circumferential outer wall of the rubber pad, a drainage groove is opened on the circumferential inner wall of the circular groove, and one end of the drainage groove is connected to the outer wall of the second shell;
[0008] The locking mechanism is used to fix the first shell and the second shell.
[0009] In this solution, considering that the normally closed switch is usually exposed to the external environment, such as in a humid, rainy, underwater environment, etc., the rubber pad and the protrusion are used in conjunction with the pressing head to keep the interior of the normally closed switch in a sealed state, thereby improving the sealing performance and protection level of the normally closed switch, and avoiding erosion by water vapor, which may cause the internal metal contacts to rust or short-circuit. If water vapor appears at the junction of the second shell and the rubber pad and the pressing head, the water vapor is discharged to the outside through the drain groove, thereby ensuring that the interior of the normally closed switch is dry and improving the waterproof effect of the normally closed switch.
[0010] In a preferred embodiment, the locking mechanism includes a plurality of clamps arranged on the first shell, a clamping block is arranged on the outer wall of the second shell, the clamping block is matched with the clamping block, a second protrusion is arranged on one side outer wall of the second shell, an installation groove is opened on one side outer wall of the first shell, the second protrusion is matched with the installation groove, a first protrusion is arranged on one side outer wall of the first shell, and a clamping groove is opened on the inner wall of the second shell, the clamping groove is matched with the first protrusion.
[0011] By adopting the above scheme, by setting the second protrusion, the first protrusion, the installation groove and the card slot, when the first shell and the second shell are fixedly installed, the second protrusion is embedded in the installation groove, and the first protrusion is inserted into the card slot, so as to form a closed structure, so that the normally closed switch is isolated from the outside world. At the same time, a partition is formed inside the normally closed switch, which further enhances the waterproof performance of the normally closed switch and improves the waterproof effect of the normally closed switch.
[0012] As can be seen from the above, a normally closed switch with dustproof and waterproof functions includes a first shell and a second shell, a spring is arranged inside the second shell, a pressing head is sleeved on one end of the spring, a first electrode, a second electrode and a linkage block are arranged inside the second shell, and further includes:
[0013] A sealing mechanism, the sealing mechanism comprising a rubber pad, the inner part of the second shell is close to the outer circumferential wall of the second shell. A circular groove is formed, the rubber pad is arranged in the circular groove, a protrusion is formed on the inner circumferential wall of the rubber pad, the protrusion contacts the outer circumferential wall of the pressing head, a gasket is formed between the inner circumferential wall of the circular groove and the outer circumferential wall of the rubber pad, a drainage groove is formed on the inner circumferential wall of the circular groove, one end of the drainage groove is connected to the outer wall of the second shell;
[0014] The locking mechanism is used to fix the first shell and the second shell. The utility model provides a normally closed switch with dust and water-proof functions, which has the technical effect of making the interior of the normally closed switch in a sealed state, improving the sealing performance and protection level of the normally closed switch, ensuring the internal dryness of the normally closed switch, and improving the waterproof effect of the normally closed switch. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 The utility model provides a schematic diagram of the overall structure of a normally closed switch with dust and water proof functions.
[0016] Figure 2 The utility model is a schematic cross-sectional structure diagram of a normally closed switch with dust and water proof functions.
[0017] Figure 3 The utility model discloses a schematic diagram of the explosion structure of a normally closed switch with dustproof and waterproof functions.
[0018] In the accompanying drawings: 1. first buckle; 2. first shell; 3. pressing head; 4. second shell; 5. second buckle; 6. spring; 7. linkage block; 8. first electrode; 9. second electrode; 10. first pole piece; 11. second pole piece; 12. rubber pad; 13. drain groove; 14. gasket; 15. protrusion; 16. block; 17. mounting groove; 18. first protrusion; 19. clamp; 20. second protrusion. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0020] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0021] The utility model discloses a normally closed switch with dustproof and waterproof functions, which is mainly used in existing normally closed switches with poor waterproof performance and cannot meet the use conditions. In some special use scenarios, water vapor corrodes the switch, causing the internal metal contacts to rust or short-circuit.
[0022] Reference Figure 1 and Figure 2 A normally closed switch with dustproof and waterproof functions, comprising a first shell 2 and a second shell 4, a spring 6 is arranged inside the second shell 4, a pressing head 3 is sleeved on one end of the spring 6, a first electrode 8, a second electrode 9 and a linkage block 7 are respectively arranged inside the second shell 4, and further comprising:
[0023] The sealing mechanism includes a rubber pad 12. A circular groove is formed on the inner circumferential outer wall of the second housing 4 near the pressing head 3. The rubber pad 12 is arranged in the circular groove. A protrusion 15 is formed on the inner circumferential wall of the rubber pad 12. The protrusion 15 contacts the outer circumferential wall of the pressing head 3. A gasket 14 is formed between the inner circumferential wall of the circular groove and the outer circumferential wall of the rubber pad 12. A drainage groove 13 is formed on the inner circumferential wall of the circular groove. One end of the drainage groove 13 is connected to the outer wall of the second housing 4.
[0024] The locking mechanism is used to fix the first housing 2 and the second housing 4.
[0025] Specifically, the rubber pad 12 and the protrusion 15 are used in conjunction with the pressing head 3 to keep the interior of the normally closed switch in a sealed state. If water vapor appears at the junction of the second shell 4 and the rubber pad 12 and the pressing head 3, the water vapor is discharged to the outside through the drain groove 13 to ensure that the interior of the normally closed switch is dry.
[0026] Reference Figure 1 and Figure 2 In a preferred embodiment, a first pole piece 10 and a second pole piece 11 are respectively provided in the second shell 4, one end of the first pole piece 10 is fixedly connected to the first electrode 8, and one end of the second pole piece 11 is fixedly connected to the second electrode 9. A first buckle 1 is provided on the top of the second shell 4, and a second buckle 5 is provided on the bottom of the second shell 4, which is used to install the normally closed switch in a fixed position to prevent the normally closed switch from shaking. The linkage block 7 is rotatably connected to the inner wall of the second shell 4, and the linkage block 7 is close to the outer wall of one side of the second pole piece 11. Under normal circumstances, the first electrode 8 is in contact with the second electrode 9 and is in a closed state. When the switch needs to be closed, the pressing head 3 is pressed downward, and the linkage block 7 at one end of the pressing head 3 rotates, and the linkage block 7 squeezes the second pole piece 11 to deform, so that the second electrode 9 is away from the first electrode 8, thereby disconnecting the circuit.
[0027] Reference Figure 2 and Figure 3 In a preferred embodiment, the locking mechanism includes a plurality of clamps 19 arranged on the first shell 2, a clamp block 16 is arranged on the outer wall of the second shell 4, the clamp 19 is matched with the clamp block 16, a second protrusion 20 is arranged on one side outer wall of the second shell 4, a mounting groove 17 is opened on one side outer wall of the first shell 2, the second protrusion 20 is matched with the mounting groove 17, a first protrusion 18 is arranged on one side outer wall of the first shell 2, and a clamp groove is opened on the inner wall of the second shell 4, and the clamp groove is matched with the first protrusion 18.
[0028] Specifically, when the first housing 2 and the second housing 4 are fixedly installed, the second protrusion 20 is embedded in the installation groove 17, and the first protrusion 18 is inserted into the card groove to form a closed structure, so that the normally closed switch is isolated from the outside world, and at the same time, the normally closed switch is divided inside.
[0029] Working principle: When in use, the second protrusion 20 is embedded in the installation groove 17, and the first protrusion 18 is inserted into the card slot to form a closed structure. The rubber pad 12 and the protrusion 15 are used in conjunction with the pressing head 3 to make the interior of the normally closed switch in a sealed state. If water vapor appears at the junction of the second shell 4 and the rubber pad 12 and the pressing head 3, the water vapor will be discharged to the outside through the drain groove 13.
[0030] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this. The replacement can be a replacement of part of the structure, device, method step, or a complete technical solution. Equivalent replacement or change based on the technical solution of the utility model and its utility model concept should be included in the protection scope of the utility model.
Claims
1. A normally closed switch with dustproof and waterproof functions, comprising a first housing (2) and a second housing (4), wherein a spring (6) is arranged inside the second housing (4), a pressing head (3) is sleeved on one end of the spring (6), and a first electrode (8), a second electrode (9) and a linkage block (7) are arranged inside the second housing (4), respectively. It is characterized in that Also includes: A sealing mechanism, the sealing mechanism comprising a rubber pad (12), a circular groove being formed on the inner side of the second housing (4) near the circumferential outer wall of the pressing head (3), the rubber pad (12) being arranged in the circular groove, a protrusion (15) being formed on the circumferential inner wall of the rubber pad (12), the protrusion (15) being in contact with the circumferential outer wall of the pressing head (3), a gasket (14) being formed between the circumferential inner wall of the circular groove and the circumferential outer wall of the rubber pad (12), a drainage groove (13) being formed on the circumferential inner wall of the circular groove, one end of the drainage groove (13) being in communication with the outer wall of the second housing (4); A locking mechanism, used for fixing the first shell (2) and the second shell (4).
2. A normally closed switch with dust and water proof function according to claim 1, It is characterized in that A first buckle (1) is provided at the top of the second shell (4), and a second buckle (5) is provided at the bottom of the second shell (4).
3. A normally closed switch with dust and water proof function according to claim 1, It is characterized in that The locking mechanism comprises a plurality of clamps (19) arranged on the first shell (2); a clamp block (16) is arranged on the outer wall of the second shell (4); and the clamps (19) are adapted to fit the clamp block (16).
4. A normally closed switch with dust and water proof function according to claim 3, It is characterized in that A second protrusion (20) is provided on one side outer wall of the second housing (4), a mounting groove (17) is provided on one side outer wall of the first housing (2), and the second protrusion (20) is adapted to fit the mounting groove (17).
5. A normally closed switch with dust and water proof function according to claim 4, It is characterized in that A first protrusion (18) is provided on one side outer wall of the first shell (2), and a slot is provided on the inner wall of the second shell (4), wherein the slot is adapted to fit the first protrusion (18).
6. A normally closed switch with dustproof and waterproof functions according to claim 1, It is characterized in that A first pole piece (10) and a second pole piece (11) are respectively arranged in the second housing (4); one end of the first pole piece (10) is fixedly connected to the first electrode (8), and one end of the second pole piece (11) is fixedly connected to the second electrode (9).
7. A normally closed switch with dust and water proof function according to claim 6, It is characterized in that The linkage block (7) is rotatably connected to the inner wall of the second outer shell (4), and the linkage block (7) is close to the outer wall of one side of the second-stage sheet (11).