A twist switch

Abstract

The utility model discloses a twist switch relates to manual control electric element technical field, aims at solving the poor waterproof effect of existing twist switch, dynamic waterproof easy failure problem. The twist switch includes shell, upper cover, base, rocker assembly, circuit board, movable contact piece and waterproof ring, and the coaxial sleeve of upper cover and base is installed in the shell, and its key improvement lies in adding the metal gasket of annular structure, the metal gasket and waterproof ring are laminated and are fixed tightly between upper cover and base, and the width (L) of metal gasket is greater than the wall thickness (M) of upper cover and base. Through above -mentioned structure, the metal gasket effectively expands the extrusion contact area of waterproof ring, makes waterproof ring elastic deformation more even, and the sealing pressure is more stable, and the static waterproof reliability is improved obviously.

Description

Technical Field

[0001] This utility model relates to the field of manual control electrical components, specifically to a toggle switch. Background Technology

[0002] Toggle switches, as a common manual control electrical component, are widely used in household appliances, industrial equipment, automotive electronics, and other fields. Their core function is to control the on / off state of a circuit by swinging a rocker arm. In practical applications, waterproof performance is one of the key indicators for evaluating the quality of toggle switches, ensuring stable operation in complex environments such as humidity and dust.

[0003] Existing waterproof structures for toggle switches typically involve directly pressing a waterproof ring between the top cover and the base inside the casing. The elastic deformation of the waterproof ring fills the gap between the top cover and the base, preventing moisture intrusion. However, due to the need for miniaturization in the overall design of toggle switches, the walls of the top cover and base are generally designed to be thin, which directly results in a very limited actual contact area between the waterproof ring and the top cover / base.

[0004] The limited compression area results in uneven sealing pressure distribution of the waterproof ring, making it difficult to form a stable and reliable waterproof seal. This makes it prone to sealing failure during long-term use or when the ambient temperature changes, affecting the waterproof performance of the switch. On the other hand, to ensure basic waterproof capability, the current design requires the use of a thicker waterproof ring. However, during the frequent swinging of the rocker assembly, the thicker waterproof ring is prone to irreversible deformation or displacement due to unidirectional pulling, which leads to failure of the dynamic waterproof function. This seriously affects the working stability and service life of the toggle switch, and also increases the material cost of the waterproof ring, which is not conducive to improving the product's market competitiveness. Utility Model Content

[0005] To address the shortcomings of the prior art, this utility model provides a toggle switch.

[0006] The technical solution adopted by this utility model is: a toggle switch, including a shell, a top cover, a base, a rocker assembly, a circuit board, a moving contact piece and a waterproof ring. The top cover and the base are coaxially fitted inside the shell. It also includes a ring-shaped metal gasket. The metal gasket and the waterproof ring are stacked and pressed together between the top cover and the base. The width (L) of the metal gasket is greater than the wall thickness (M) of the top cover and the base.

[0007] Furthermore, the waterproof ring includes a flat outer pressure ring, a wave-structured middle ring, and an inner interlocking ring, wherein the width (N) of the outer pressure ring is smaller than the width (L) of the metal gasket.

[0008] Furthermore, the rocker assembly includes a rocker positioning cover, an operating lever, a rocker spring, and a slider. The rocker positioning cover is fixedly installed inside the upper cover. The operating lever is fitted inside the rocker positioning cover, with one end extending out of the upper cover and the other end extending into the base and connecting to the moving contact piece. A sliding hole is provided inside the operating lever. One end of the slider extends into the sliding hole and engages with the sliding hole in a telescopic cooperation. One end of the spring is connected to the top wall of the sliding hole, and the other end is connected to the slider.

[0009] Furthermore, the operating lever is provided with an annular groove, which is fitted and connected with the aforementioned inner interlocking ring.

[0010] Furthermore, the positioning cover has a positioning bushing extending toward one side of the base.

[0011] Furthermore, the base has a plurality of positioning shafts spaced apart on the stepped surface at one end of the metal pad, the metal pad and the waterproof ring are provided with a first positioning hole for the positioning shafts to pass through, and the upper cover is provided with a second positioning hole for the positioning shafts to extend into.

[0012] Furthermore, the inner wall of the base is provided with mounting steps for mounting a circuit board, and the circuit board is connected to several terminals.

[0013] The beneficial effects of this utility model are: 1. Improved Waterproof Sealing Reliability: By adding an annular metal gasket between the top cover and the base, and ensuring the gasket's width is greater than the wall thickness of both the top cover and the base, the compression contact area of ​​the waterproof ring is effectively increased. Compared to existing designs that directly compress the waterproof ring with thin walls, the larger contact area allows for more uniform elastic deformation of the waterproof ring, resulting in a more stable sealing pressure distribution and the formation of a continuous and reliable sealing surface. This significantly reduces the risk of moisture intrusion in humid and dusty environments, fundamentally solving the problem of poor waterproofing performance in traditional structures.

[0014] 2. Ensuring Stable Dynamic Waterproofing: Due to the increased compression area, the waterproof ring can be designed to be thinner while maintaining sealing performance. A thinner waterproof ring experiences significantly less unidirectional tensile force during frequent rocker arm movements, making it less prone to irreversible deformation or displacement. This prevents dynamic waterproofing failure caused by the waterproof ring being stretched, ensuring the switch maintains stable waterproofing performance over long-term use and extending product lifespan.

[0015] 3. Reduced production costs and strong adaptability: On the one hand, the thinner waterproof ring can reduce the amount of raw materials such as rubber, directly reducing the material cost of the waterproof ring; on the other hand, the metal gasket has a simple structure and low processing difficulty, and does not require major changes to the overall structure of the toggle switch shell, top cover and base, which can adapt to the miniaturization design requirements of existing products, without the need for additional adjustment of production molds, thus reducing the cost and difficulty of technology upgrades.

[0016] 4. Improve overall switch stability: Stable sealing performance and dynamic waterproofing can prevent water intrusion that could cause short circuits or damage to internal electrical components such as circuit boards and moving contacts, reducing switch failures caused by waterproofing issues. This further ensures the on / off control accuracy and operational stability of the toggle switch in complex environments, enhancing the product's market competitiveness and user experience.

[0017] In addition to the objectives, features and advantages described above, this utility model has other objectives, features and advantages.

[0018] The present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is an exploded view of the present invention.

[0021] Figure 3 This is a cross-sectional schematic diagram of the present invention.

[0022] Figure 4 for Figure 3 Enlarged diagram of point A in the middle.

[0023] Figure 5 This is a top view of the base.

[0024] Figure 6 A schematic diagram of the structure of the waterproof ring and the metal gasket.

[0025] Figure 7 This is a schematic diagram of the end face of the top cover.

[0026] Figure 8 This is a schematic diagram of the structure of a metal gasket.

[0027] Figure 1-8 Components: 1. Outer shell; 2. Top cover; 3. Base; 5. Circuit board; 6. Moving contact piece; 7. Waterproof ring; 8. Metal gasket; 9. Outer pressure ring; 10. Middle ring; 11. Inner fitting ring; 12. Rocker arm positioning cover; 13. Operating lever; 14. Rocker arm spring; 15. Slider; 16. Sliding hole; 17. Annular groove; 18. Positioning bushing; 19. Positioning shaft; 20. First positioning hole; 21. Second positioning hole; 22. Mounting step; 23. Terminal. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0030] This utility model provides a toggle switch.

[0031] In this embodiment, refer to Figure 1-8 The toggle switch includes a housing 1, a top cover 2, a base 3, a rocker assembly, a circuit board 5, a moving contact 6, and a waterproof ring 7. The top cover and the base are coaxially fitted inside the housing. It also includes a ring-shaped metal gasket 8. The metal gasket 8 and the waterproof ring 7 are stacked and pressed together and fixed between the top cover and the base. The width (L) of the metal gasket is greater than the wall thickness (M) of the top cover and the base.

[0032] In the above technical solution, an annular metal gasket is added between the top cover and the base of the toggle switch and is overlapped and pressed tightly with the waterproof ring. Utilizing the structure where the width (L) of the metal gasket is greater than the wall thickness (M) of the top cover and base, the compressive force surface of the waterproof ring is extended from the thin wall of the base to the wider metal gasket, increasing the contact range between the waterproof ring and the fixed structure. This solves the problem of small contact area caused by the compression of traditional thin-walled waterproof rings, ensuring uniform elastic deformation of the waterproof ring, stable sealing pressure, and improved static waterproof reliability. Simultaneously, it provides conditions for thinning the waterproof ring, preventing it from failing due to tension when the lever swings, thus ensuring dynamic waterproof performance.

[0033] Specifically, the waterproof ring includes a flat outer pressure ring 9, a wave-structured middle ring 10, and an inner embedded ring 11. The width (N) of the outer pressure ring is smaller than the width (L) of the metal gasket.

[0034] In this embodiment, the waterproof ring is designed as a combination of an outer pressure ring (flat), a middle ring (wave structure), and an inner interlocking ring. The width (N) of the outer pressure ring is controlled to be smaller than the width (L) of the metal gasket, so that the outer pressure ring can completely fit the metal gasket to bear the force. The wave structure of the middle ring can enhance the elastic deformation capability, and the inner interlocking ring is used for positioning with other components.

[0035] The sealing effect is further optimized. The wave-shaped inner ring improves the deformation resistance and recovery ability of the waterproof ring, extending its service life. The embedded ring lays the foundation for subsequent connection with the rocker arm assembly, improving the overall structural stability.

[0036] Specifically, the rocker assembly includes a rocker positioning cover 12, an operating lever 13, a rocker spring 14, and a slider 15. The rocker positioning cover is fixedly installed inside the upper cover. The operating lever is fitted inside the rocker positioning cover, with one end extending out of the upper cover and the other end extending into the base and connecting to the moving contact piece. A sliding hole 16 is provided inside the operating lever. One end of the slider extends into the sliding hole and engages with the sliding hole 16 in a telescopic cooperation. One end of the spring is connected to the top wall of the sliding hole, and the other end is connected to the slider.

[0037] In this embodiment, the positioning cover ensures that the operating lever is installed firmly and avoids displacement during swinging; the extension and retraction of the spring and the slider improve the smoothness of the operating lever swing and the accuracy of the reset, ensuring the precision of the moving contact, thereby improving the reliability of the switch on / off control.

[0038] Specifically, the operating lever is provided with an annular groove 17, which is fitted and connected to the aforementioned inner interlocking ring.

[0039] In this embodiment, an annular groove is provided on the operating rod so that the inner fitting ring of the waterproof ring is precisely fitted into the annular groove, forming a fixed connection between the operating rod and the waterproof ring.

[0040] Specifically, the positioning cover has a positioning bushing 18 extending toward one side of the base.

[0041] In this embodiment, a positioning sleeve is provided on the rocker arm positioning cover extending to one side of the base. The positioning sleeve can form a circumferential positioning for the end of the operating rod that extends into the base, thus limiting the radial sway of the operating rod.

[0042] Specifically, the base has a plurality of positioning shafts 19 spaced apart on the stepped surface at one end of the metal pad, the metal pad and the waterproof ring are provided with a first positioning hole 20 for the positioning shafts to pass through, and the upper cover is provided with a second positioning hole 21 for the positioning shafts to extend into.

[0043] In this embodiment, a positioning shaft is set on the stepped surface of the base. The first positioning hole of the metal gasket and the waterproof ring, and the second positioning hole of the top cover, respectively cooperate with the positioning shaft. The positioning shaft enables precise positioning and assembly of the base, metal gasket, waterproof ring, and top cover. This ensures uniform compression force on the waterproof ring, simplifies the assembly process, improves production efficiency and assembly accuracy, and reduces the risk of seal failure due to assembly deviations.

[0044] Specifically, the inner wall of the base is provided with mounting steps 22 for mounting the circuit board, and the circuit board is connected with a number of terminals 23.

[0045] In this embodiment, an installation step is provided on the inner wall of the base for mounting and positioning the circuit board, so that the circuit board is stably fixed in the base and the terminals connected to the circuit board can be extended to the outside to realize circuit connection.

[0046] Attention all technical personnel: Although this utility model has been described according to the specific embodiments above, the concept of this utility model is not limited to this utility model. Any modification that utilizes the concept of this utility model will be included within the scope of protection of this patent right.

Claims

1. A toggle switch, comprising a housing, a top cover, a base, a rocker assembly, a circuit board, a moving contact, and a waterproof ring, wherein the top cover and the base are coaxially fitted inside the housing, characterized in that: It also includes a ring-shaped metal gasket, which is stacked with the waterproof ring and pressed together between the top cover and the base, and the width (L) of the metal gasket is greater than the wall thickness (M) of the top cover and the base.

2. The toggle switch according to claim 1, characterized in that: The waterproof ring includes a flat outer pressure ring, a wave-structured middle ring, and an inner interlocking ring. The width (N) of the outer pressure ring is smaller than the width (L) of the metal gasket.

3. The toggle switch according to claim 2, characterized in that: The rocker assembly includes a rocker positioning cover, an operating lever, a rocker spring, and a slider. The rocker positioning cover is fixedly installed inside the upper cover. The operating lever is fitted inside the rocker positioning cover, with one end extending out of the upper cover and the other end extending into the base and connecting to the moving contact piece. A sliding hole is provided inside the operating lever. One end of the slider extends into the sliding hole and engages with the sliding hole in a telescopic cooperation. One end of the spring is connected to the top wall of the sliding hole, and the other end is connected to the slider.

4. The toggle switch according to claim 3, characterized in that: The operating lever is provided with an annular groove, which is fitted and connected to the aforementioned inner interlocking ring.

5. The toggle switch according to claim 3, characterized in that: The positioning cover has a positioning bushing extending toward one side of the base.

6. The toggle switch according to any one of claims 1-5, characterized in that: The base has several positioning shafts spaced apart on the stepped surface at one end of the metal pad. The metal pad and the waterproof ring are provided with a first positioning hole for the positioning shafts to pass through, and the upper cover is provided with a second positioning hole for the positioning shafts to extend into.

7. The toggle switch according to claim 1, characterized in that: The inner wall of the base is provided with mounting steps for mounting a circuit board, and the circuit board is connected to several terminals.

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