Waterproof and dustproof shell of power switch

Abstract

The utility model relates to the technical field of power switches, in particular to a waterproof and dustproof shell of a power switch, which comprises a shell body, a sealing shell cover mounted at the upper end of the shell body, a knob rotatably connected to the center of the sealing shell cover, a through hole formed in the center of the sealing shell cover and used for the knob to pass through, a baffle ring arranged at the lower end of the knob, and a sealing ring fixed at the lower end of the through hole and contacted with the baffle ring, a supporting frame is installed on the inner bottom wall of the shell, a plurality of abutting assemblies making contact with the rotary knob are installed at the upper end of the supporting frame, a threaded rod in threaded connection with the supporting frame is connected to the inner bottom wall of the shell through a bearing, and a rectangular block clamped with the rotary knob is fixed to the upper end of the threaded rod. Compared with the prior art, the power switch has the advantages that the baffle ring of the knob is in close contact with the sealing ring through the pressing assembly, so that the through hole is sealed, water vapor and dust are prevented from entering the shell, the rectangular clamping groove is far away from the rectangular block, the rectangular block is prevented from being driven to rotate when the knob accidentally rotates, and the power switch cannot be accidentally turned on or turned off.

Description

Technical Field

[0001] This utility model relates to the field of power switch technology, specifically to a waterproof and dustproof housing for a power switch. Background Technology

[0002] The main purpose of a power switch is to control the power supply to turn on and off, thereby controlling the operation and shutdown of equipment. It is of great significance for protecting equipment, saving energy, and improving ease of use.

[0003] Some power switches located in outdoor environments, such as bathrooms, are susceptible to moisture and dust. Moisture and dust can easily enter the casing through the gap between the casing and the knob, causing short circuits and damage to internal components, thus reducing the lifespan of the power switch. Furthermore, the exposed knob of the power switch is easily touched, causing the power switch to be accidentally turned on or off, posing a certain safety hazard. Utility Model Content

[0004] I. Technical problems to be solved

[0005] The technical problem this invention aims to solve is that in existing power switches, dust can easily enter the housing through the gap between the housing and the knob, causing short circuits and damage to the internal components. Furthermore, the knob is exposed to the outside environment and is prone to accidental activation of the switch.

[0006] II. Technical Solution

[0007] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a waterproof and dustproof housing for a power switch, comprising a housing, a sealing cover installed on the upper end of the housing, a knob rotatably connected to the center of the sealing cover, a through hole through which the knob passes in the center of the sealing cover, a retaining ring with a diameter larger than that of the through hole at the lower end of the knob, a sealing ring in contact with the retaining ring fixed at the lower end of the through hole, a support frame installed on the inner bottom wall of the housing, a plurality of pressing components in contact with the knob installed on the upper end of the support frame, a pair of wires passing through the bottom wall of the housing, a pair of connection contact points one connected to the wires installed on the inner bottom wall of the housing, a connection contact point two corresponding to the connection contact point one slidably connected to the support frame, a threaded rod threadedly connected to the connection contact point two on the inner bottom wall of the housing, and a rectangular block that engages with the knob fixed at the upper end of the threaded rod.

[0008] Furthermore, the bottom end of the knob is provided with a rectangular slot that engages with the rectangular block.

[0009] Furthermore, a sleeve that is slidably connected to the retaining ring is installed at the lower end of the sealing shell cover, and a second retaining ring is provided at the lower end of the sleeve. Several balls are rotatably connected to the upper end of the second retaining ring.

[0010] Furthermore, the first contact point includes a threaded cylinder fixed to the bottom wall of the housing, and a threaded rod of metal material with one end of a wire wound around the threaded cylinder. A knob is fixed to the upper end of the threaded rod, and a contact point is fixed to the upper end of the knob.

[0011] Furthermore, the second contact point includes a rectangular tube that is longitudinally slidably connected to the top plate of the support frame and threadedly connected to the threaded rod. A metal plate is installed at the lower end of the rectangular tube, and contact points corresponding to contact point one are fixed on both sides of the lower end of the metal plate.

[0012] Furthermore, the pressing assembly includes a telescopic rod installed on the top plate of the support frame, with a pressing plate fixed at the upper end of the telescopic rod and contacting the knob, and a spring located between the pressing plate and the support frame is wound around the telescopic rod.

[0013] III. Beneficial Effects

[0014] The advantages of this utility model compared with the prior art are as follows:

[0015] 1. The pressure assembly, namely the telescopic rod, the pressure plate, and the spring, exerts an upward force on the knob, thereby ensuring that the knob's retaining ring tightly contacts the sealing ring, thus sealing the through hole and preventing moisture and dust from entering the housing, which could cause short circuits and damage to the internal components, thus extending the service life of the device.

[0016] 2. The knob uses a pressing component to keep the rectangular slot away from the rectangular block, so that when the knob is rotated by an unexpected external force, the rectangular block will not rotate with it, thus preventing the power switch from being turned on or off accidentally and preventing safety hazards. Attached Figure Description

[0017] Figure 1 This is an overall structural diagram of the present invention.

[0018] Figure 2 This is an overall internal structure diagram of this utility model.

[0019] Figure 3 This is a diagram of the knob installation structure of this utility model.

[0020] Figure 4 This is a structural diagram of the connection contact 1, connection contact 2, and pressure assembly of this utility model.

[0021] As shown in the figure: 1. Housing; 2. Sealing cover; 201. Through hole; 3. Knob; 301. Retaining ring; 302. Rectangular slot; 4. Wire; 5. Connecting contact point one; 6. Support frame; 7. Connecting contact point two; 8. Threaded rod; 9. Rectangular block; 10. Pressing assembly; 11. Sealing ring; 12. Sleeve; 1201. Retaining ring two; 13. Ball bearing; 14. Threaded cylinder; 15. Threaded rod two; 1501. Knob two; 1502. Contact point one; 16. Rectangular cylinder; 17. Metal plate; 1701. Contact point two; 18. Telescopic rod; 19. Pressing plate; 20. Spring. Detailed Implementation

[0022] To make the technical problems, technical solutions and beneficial effects 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 only used to explain this utility model and are not intended to limit this utility model.

[0023] Example 1

[0024] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 3 A waterproof and dustproof housing for a power switch includes a housing 1. A sealing cover 2 is installed on the upper end of the housing 1. A knob 3 is rotatably connected to the center of the sealing cover 2. A through hole 201 through which the knob 3 passes is provided in the center of the sealing cover 2. A retaining ring 301 with a diameter larger than that of the through hole 201 is provided at the lower end of the knob 3. A sealing ring 11 that contacts the retaining ring 301 is fixed at the lower end of the through hole 201. A support frame 6 is installed on the inner bottom wall of the housing 1. Several pressing components 10 that contact the knob 3 are installed on the upper end of the support frame 6.

[0025] Combined with appendix Figure 4 The pressing assembly 10 includes a telescopic rod 18 mounted on the top plate of the support frame 6. The upper end of the telescopic rod 18 is fixed with a stop plate 19 that contacts the knob 3. A spring 20 located between the stop plate 19 and the support frame 6 is wound around the telescopic rod 18.

[0026] In combination with the above structure, when the knob 3 is not in use, the pressing component 10, namely the telescopic rod 18, the abutment plate 19, and the spring 20, exert an upward force on the knob 3, thereby causing the retaining ring 301 to tightly contact the sealing ring 11, thus sealing the through hole 201, preventing moisture and dust from entering the housing 1, causing short circuit damage to the components inside the housing 1, and extending the service life of the device.

[0027] Example 2

[0028] Based on Example 1, combined with Appendix Figure 2A pair of wires 4 pass through the bottom wall of the housing 1. A pair of connection points 5 connected to the wires 4 are installed on the inner bottom wall of the housing 1. A second connection point 7 corresponding to the first connection point 5 is slidably connected on the support frame 6. A threaded rod 8 connected to the second connection point 7 is threadedly connected to the bearing on the inner bottom wall of the housing 1. A rectangular block 9 that engages with the knob 3 is fixed at the upper end of the threaded rod 8. A rectangular slot 302 that engages with the rectangular block 9 is provided at the bottom end of the knob 3.

[0029] With the above structure, when the knob 3 is not in use, the rectangular slot 302 is moved away from the rectangular block 9 by the pressing component 10, so that when the knob 3 is rotated by an unexpected external force, the rectangular block 9 will not rotate with it, so that the power switch will not be turned on or off accidentally, thus preventing safety hazards.

[0030] Combined with appendix Figure 3 The lower end of the sealing cover 2 is equipped with a sleeve 12 that is slidably connected to the retaining ring 301. The lower end of the sleeve 12 is provided with a second retaining ring 1201. The upper end of the second retaining ring 1201 is inlaid with a plurality of balls 13 for rotational connection.

[0031] Combined with the above structure, the sleeve 12 and the retaining ring 1201 guide and limit the knob 3, and the knob 3 is easy to rotate through a number of balls 13.

[0032] Combined with appendix Figure 4 The first contact point 5 includes a threaded cylinder 14 fixed on the inner bottom wall of the housing 1. A second threaded rod 15 of metal material with one end of the wire 4 is threadedly connected to the threaded cylinder 14. A second knob 1501 is fixed to the upper end of the second threaded rod 15, and a first contact point 1502 is fixed to the upper end of the second knob 1501, so that the wire 4 can be easily installed and removed.

[0033] Combined with appendix Figure 4 The second contact point 7 includes a rectangular tube 16 that is longitudinally slidably connected to the top plate of the support frame 6 and threadedly connected to the threaded rod 8. A metal plate 17 is installed at the lower end of the rectangular tube 16, and two contact points 1701 corresponding to the first contact point 1502 are fixed on both sides of the lower end of the metal plate 17.

[0034] Combining the above structure, by rotating the threaded rod 8, the rectangular cylinder 16 drives the metal plate 17 to descend, thereby causing a pair of contacts 1701 to contact contact 1502 respectively, thus connecting a pair of wires 4 and turning on the power switch.

[0035] The specific usage method is as follows:

[0036] Pressing and rotating knob 3 causes rectangular slot 302 to contain rectangular block 9 and rotate it, thereby rotating threaded rod 8. This causes rectangular cylinder 16 to lower metal plate 17, causing a pair of contacts 1701 to contact contact 1502, thus connecting a pair of wires 4 and turning on the power switch. Releasing knob 3 causes it to move upward through the pressing assembly 10 (telescopic rod 18, abutment plate 19, and spring 20), and causes retaining ring 301 to contact sealing ring 11 tightly, thus sealing through hole 201 and preventing moisture and dust from entering housing 1, which could cause short circuits and damage to components inside housing 1, thus extending the service life of the device. Correspondingly, pressing and rotating knob 3 in the opposite direction and then releasing it causes contact 1701 to move away from contact 1502, thus turning off the power switch.

[0037] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A waterproof and dustproof housing for a power switch, comprising a housing (1), wherein a sealing cover (2) is mounted on the upper end of the housing (1), and a knob (3) is rotatably connected to the center of the sealing cover (2), characterized in that: The sealing cover (2) has a through hole (201) through which the knob (3) passes. The lower end of the knob (3) has a retaining ring (301) with a diameter larger than that of the through hole (201). The lower end of the through hole (201) is fixed with a sealing ring (11) that contacts the retaining ring (301). A support frame (6) is installed on the bottom wall of the housing (1). Several pressing components (10) that contact the knob (3) are installed on the upper end of the support frame (6). A pair of wires (4) pass through the bottom wall of the housing (1). A pair of connection contact points (5) connected to the wires (4) are installed on the bottom wall of the housing (1). A connection contact point (7) corresponding to the connection contact point (5) is slidably connected on the support frame (6). A threaded rod (8) that is threadedly connected to the connection contact point (7) is connected to the bearing on the bottom wall of the housing (1). A rectangular block (9) that engages with the knob (3) is fixed on the upper end of the threaded rod (8).

2. The waterproof and dustproof housing for a power switch according to claim 1, characterized in that: The bottom of the knob (3) is provided with a rectangular slot (302) that engages with the rectangular block (9).

3. The waterproof and dustproof housing for a power switch according to claim 2, characterized in that: The lower end of the sealing shell cover (2) is equipped with a sleeve (12) that is slidably connected to the retaining ring (301). The lower end of the sleeve (12) is provided with a second retaining ring (1201). The upper end of the second retaining ring (1201) is inlaid with a number of balls (13) for rotational connection.

4. The waterproof and dustproof housing for a power switch according to claim 1, characterized in that: The first contact point (5) includes a threaded cylinder (14) fixed on the bottom wall of the inner shell (1). A threaded rod (15) of metal material with one end of a wire (4) is threadedly connected to the threaded cylinder (14). A knob (1501) is fixed at the upper end of the threaded rod (15), and a contact point (1502) is fixed at the upper end of the knob (1501).

5. The waterproof and dustproof housing for a power switch according to claim 4, characterized in that: The second contact point (7) includes a rectangular tube (16) that is longitudinally slidably connected to the top plate of the support frame (6) and threadedly connected to the threaded rod (8). A metal plate (17) is installed at the lower end of the rectangular tube (16), and the two sides of the lower end of the metal plate (17) are fixed with a second contact point (1701) corresponding to the first contact point (1502).

6. The waterproof and dustproof housing for a power switch according to claim 1, characterized in that: The pressing assembly (10) includes a telescopic rod (18) mounted on the top plate of the support frame (6). The upper end of the telescopic rod (18) is fixed with a stop plate (19) that contacts the knob (3). A spring (20) is wound around the telescopic rod (18) between the stop plate (19) and the support frame (6).

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