Protective microswitch

Abstract

The utility model provides a protective microswitch, which relates to the technical field of microswitches and comprises a shell, a transmission mechanism is arranged in the shell and partially penetrates out of the shell, a sealing assembly is arranged on the transmission mechanism, and the sealing assembly wraps the transmission mechanism and is connected with the shell to form a sealing cavity. The transmission mechanism is wrapped by the sealing assembly and is connected with the shell to form the sealed cavity, so that the external environment is effectively isolated, water vapor is prevented from entering the microswitch from gaps, the waterproof, dustproof and moistureproof performance of the microswitch is improved, and reliable work of the microswitch in a severe environment is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of micro switches, in particular to a protective micro switch. Background Art

[0002] With the rapid development of new energy vehicles, the safety and reliability of electric vehicle charging guns, as key equipment for connecting electric vehicles and charging piles, are of vital importance. Micro switches are important components in charging guns for detecting the connection status between charging guns and charging interfaces, and their performance directly affects the safety and efficiency of the charging process.

[0003] The charging gun is exposed to the outdoor environment for a long time and is easily corroded by rain, dust, moisture, etc. Most traditional micro switches adopt a simple splicing structure, and the operating parts and seals have an interference fit, which has poor sealing performance. Water vapor can easily enter the interior, causing poor contact, short circuit and other faults, which poses a safety hazard and affects the reliability of the micro switch.

[0004] Chinese patent document CN109545599A discloses a compact micro switch, which includes a shell, a base, a transmission part, a support terminal, a normally open terminal, a normally closed terminal, a tension spring, a spring, a pendulum and a push block. By adding the pendulum, the connecting terminal only needs to be provided with a vertical numerical support plate, which reduces the width of the connecting terminal and enables the base to be made more compact.

[0005] However, the micro switch in the prior art still cannot solve the problem of poor sealing performance.

[0006] Therefore, it is necessary to improve the existing micro switch to overcome the defects of the prior art. Utility Model Content

[0007] In order to overcome the problems existing in the related art, the purpose of the utility model is to provide a protective micro switch, which forms a closed cavity with a housing through a sealing component, thereby overcoming the problem of poor sealing performance existing in the prior art.

[0008] A protective micro switch, comprising:

[0009] A shell, wherein a transmission mechanism is arranged inside the shell, wherein the transmission mechanism partially passes through the shell, and a sealing component is arranged on the transmission mechanism, wherein the sealing component wraps the transmission mechanism and is connected to the shell to form a sealed cavity.

[0010] The transmission mechanism is wrapped by a sealing component and connected to the shell to form a sealed cavity, which effectively isolates the external environment and prevents water vapor from entering the micro switch through the gap, thereby improving the waterproof, dustproof and moisture-proof performance of the micro switch and ensuring its reliable operation in harsh environments.

[0011] In some embodiments, the sealing assembly includes a closed end and an embedded end, the inner wall of the closed end is provided with a sealing ring, the closed end and the sealing ring tightly wrap the transmission mechanism, and the embedded end is embedded in the shell.

[0012] Since the top of the sealing component will rub against the equipment and is prone to damage, a sealing ring is provided on the sealing component to form a secondary seal. When the top is damaged, the sealing ring cooperates with the transmission mechanism to ensure that the interior is still sealed, further enhancing the waterproof and dustproof performance and anti-destruction ability.

[0013] In some embodiments, the transmission mechanism includes a transmission column, one end of which passes through the shell, and a groove is provided on the transmission column. The sealing ring is interference fit with the groove. A fixing ring is also provided on the shell, and the fixing ring is arranged around the transmission column. A fixing groove is provided in the fixing ring, and a raised rib is provided in the fixing groove. The embedded end is embedded in the fixing groove and interference fits with the raised rib.

[0014] The sealing component needs to withstand external shock and vibration. If it is not firmly fixed, it will easily loosen or fall off, resulting in sealing failure. Through the cooperation of grooves, fixing rings, fixing grooves and raised ribs, reliable mechanical connection can be achieved to enhance the fixing strength of the sealing component.

[0015] In some embodiments, the shell includes an upper cover shell and a base, the upper cover shell is provided with a through hole, the transmission column passes through the upper cover shell through the through hole, and a quick-acting mechanism is also provided in the shell, the quick-acting mechanism includes a moving plate, a spring and a support rod, one end of the support rod is fixedly connected to the base, and the other end is provided with a heart-shaped hole, one end of the spring is hung on the heart-shaped hole, and the other end is hung on the moving plate, and the transmission mechanism also includes a connecting seat, one end of the connecting seat is connected to the transmission column, and the other end abuts the moving plate.

[0016] By arranging a heart-shaped hole on the support rod instead of a traditional elliptical hole, the interference between the spring and the support rod can be effectively reduced, making it easier to hang the spring on the support rod and facilitating the automatic hanging assembly of the spring and the support rod.

[0017] In some embodiments, the sealing assembly is fixed to the fixing groove by welding, and the upper cover shell and the base are formed into a whole by welding.

[0018] The welding of the sealing component and the fixing groove can better fix the sealing component firmly. There is a gap between the buckled upper cover shell and the base, and water vapor or dust can easily enter the micro switch through the gap, affecting the sealing performance of the micro switch. Welding the upper cover shell and the base into a whole can effectively eliminate the gap.

[0019] In some embodiments, the shell further includes a shielding layer, a graphite layer, and a metal layer. The shielding layer is arranged inside the shell or on the inner side of the upper cover shell, the graphite layer wraps the outer side of the shell, and the metal layer wraps the graphite layer.

[0020] The shielding layer can block electromagnetic interference and enhance the ability to resist electromagnetic interference. The graphite layer and the metal layer can provide anti-corrosion protection and improve the anti-corrosion performance, forming a multi-layer protective structure to completely avoid the adverse effects of the external environment on the micro switch.

[0021] The beneficial effects of the utility model are:

[0022] The utility model provides a protective micro switch, which includes a housing, a transmission mechanism is arranged in the housing, the transmission mechanism partially passes through the housing, a sealing component is arranged on the transmission mechanism, the sealing component wraps the transmission mechanism and is connected to the housing to form a sealed cavity. The transmission mechanism is wrapped by the sealing component and connected to the housing to form a sealed cavity, which effectively isolates the external environment, prevents water vapor from entering the micro switch through the gap, improves the waterproof, dustproof and moisture-proof performance of the micro switch, and ensures its reliable operation in harsh environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is an exploded view of a protective micro switch provided in an embodiment of the present application;

[0024] Figure 2 is a cross-sectional view of a protective micro switch provided in an embodiment of the present application;

[0025] Figure 3 It is a cross-sectional view of another protective micro switch provided in an embodiment of the present application.

[0026] Reference numerals:

[0027] 100. Shell;

[0028] 110, upper cover shell; 120, base; 130, fixing ring; 131, fixing groove; 132, raised rib; 140, shielding layer; 150, graphite layer; 160, metal layer;

[0029] 200, quick-acting mechanism; 210, moving plate; 220, spring; 230, supporting rod; 231, peach heart hole;

[0030] 300, transmission mechanism; 310, transmission column; 320, connecting seat;

[0031] 400. Sealing assembly; 410. Sealing ring. DETAILED DESCRIPTION

[0032] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0033] Example 1

[0034] like Figure 1-Figure 3 As shown, this embodiment provides a protective micro switch, which includes:

[0035] The housing 100 has a transmission mechanism 300 disposed therein, the transmission mechanism 300 partially passes through the housing 100, a sealing assembly 400 is disposed on the transmission mechanism 300, and the sealing assembly 400 wraps the transmission mechanism 300 and is connected to the housing 100 to form a sealed cavity.

[0036] Specifically, the sealing assembly 400 includes a closed end and an embedded end. The inner wall of the closed end is provided with a sealing ring 410 . The closed end and the sealing ring 410 tightly wrap the transmission mechanism 300 . The embedded end is embedded in the housing 100 .

[0037] More specifically, in this embodiment, the sealing end, the embedding end and the sealing ring 410 are an integrated structure and are made of silicone material.

[0038] The transmission mechanism 300 includes a transmission column 310, one end of which passes through the shell 100, and a groove is provided on the transmission column 310. The sealing ring 410 is interference fit with the groove. A fixing ring 130 is also provided on the shell 100. The fixing ring 130 is arranged around the transmission column 310, and a fixing groove 131 is provided in the fixing ring 130. A raised rib 132 is provided in the fixing groove 131, and the embedded end is embedded in the fixing groove 131 and interference fits with the raised rib 132.

[0039] More specifically, the transmission column 310 can be in any shape, such as a square column, a round column, a hexagonal column, etc., and the end of the transmission column 310 can also be in any shape, such as a round column, a trapezoidal column, or a plane. In this embodiment, the transmission column 310 is a round column, and the end of the transmission column 310 is a plane.

[0040] More specifically, the sealing ring 410 is arranged at the outer end of the transmission column 310, the sealing assembly 400 above the sealing ring 410 is tightly attached to the transmission column 310, and a gap is left between the sealing assembly 400 below the sealing ring 410 and the transmission column 310, so that the sealing assembly 400 can be deformed when the transmission column 310 is pressed.

[0041] Specifically, in the present embodiment, the shell 100 includes an upper cover shell 110 and a base 120, the upper cover shell 110 is provided with a through hole, the transmission column 310 passes through the upper cover shell 110 through the through hole, and a quick-acting mechanism 200 is also provided in the shell 100, the quick-acting mechanism 200 includes a moving plate 210, a spring 220 and a support rod 230, one end of the support rod 230 is fixedly connected to the base 120, and the other end is provided with a heart-shaped hole 231, one end of the spring 220 is hung on the heart-shaped hole 231, and the other end is hung on the moving plate 210, and the transmission mechanism 300 also includes a connecting seat 320, one end of the connecting seat 320 is connected to the transmission column 310, and the other end abuts against the moving plate 210.

[0042] More specifically, the fixing ring 130 protrudes from the surface of the upper cover shell 110, and the fixing ring 130 includes an inner ring protrusion and an outer ring protrusion, the outer ring protrusion is higher than the inner ring protrusion, and the fixing groove 131 is arranged between the inner ring protrusion and the outer ring protrusion. The outer ring protrusion is also bent inward after the protrusion, and the end of the sealing assembly 400 is embedded in the fixing groove 131.

[0043] More specifically, the sealing assembly 400 is fixed to the fixing groove 131 by welding.

[0044] Specifically, in the present embodiment, a quick-acting mechanism 200 is further provided in the shell 100, and the quick-acting mechanism 200 includes a moving plate 210, a spring 220 and a support rod 230, one end of the support rod 230 is fixedly connected to the base 120, and the other end is provided with a heart-shaped hole 231, both ends of the spring 220 are provided with hooks, one end of the spring 220 is hung on the heart-shaped hole 231, and the other end is hung on the moving plate 210, and the connecting seat 320 abuts against the moving plate 210.

[0045] More specifically, a fixing column is disposed on the base 120 , and a bayonet is disposed at one end of the support rod 230 , which is clamped on the fixing column.

[0046] More specifically, the base 120 is provided with two connecting pillars, each of which is provided with a V-shaped groove. The movable plate 210 is provided with two forked connecting ends, an elliptical hanging opening and a contact point. The connecting end is stuck in the V-shaped groove. One end of the spring 220 is hung on the elliptical hanging opening, and the other end is hung on the peach-shaped hole 231.

[0047] More specifically, two forked connecting posts are provided on the connecting base 320 , and the forked connecting posts abut against the forked connecting ends.

[0048] More specifically, the heart-shaped hole 231 refers to a hole whose outer contour is similar to the shape of a heart or a fan.

[0049] This embodiment effectively solves the problem of poor waterproof and dustproof performance of traditional micro switches by arranging a sealing assembly 400 on the transmission column 310 and enhancing the sealing and connection strength by means of a sealing ring 410, a fixing ring 130 and welding, while ensuring the flexibility and reliability of the transmission mechanism 300, improving the overall protection level and service life of the micro switch, and is particularly suitable for application scenarios with high requirements for waterproof and dustproof, such as electric vehicle charging guns.

[0050] Example 2

[0051] like Figure 1-Figure 3 As shown, this embodiment provides a protective micro switch, which includes:

[0052] The housing 100 has a transmission mechanism 300 disposed therein, the transmission mechanism 300 partially passes through the housing 100, a sealing assembly 400 is disposed on the transmission mechanism 300, and the sealing assembly 400 wraps the transmission mechanism 300 and is connected to the housing 100 to form a sealed cavity.

[0053] The sealing assembly 400 includes a closed end and an embedded end. A sealing ring 410 is disposed on the inner wall of the closed end. The closed end and the sealing ring 410 tightly wrap the transmission mechanism 300 . The embedded end is embedded in the housing 100 .

[0054] The transmission mechanism 300 includes a transmission column 310, one end of which passes through the shell 100, and a groove is provided on the transmission column 310. The sealing ring 410 is interference fit with the groove. A fixing ring 130 is also provided on the shell 100. The fixing ring 130 is arranged around the transmission column 310, and a fixing groove 131 is provided in the fixing ring 130. A raised rib 132 is provided in the fixing groove 131, and the embedded end is embedded in the fixing groove 131 and interference fits with the raised rib 132.

[0055] The shell 100 includes an upper cover shell 110 and a base 120. The upper cover shell 110 is provided with a through hole, and the transmission column 310 passes through the upper cover shell 110 through the through hole. A quick-acting mechanism 200 is also provided in the shell 100. The quick-acting mechanism 200 includes a moving plate 210, a spring 220 and a support rod 230. One end of the support rod 230 is fixedly connected to the base 120, and the other end is provided with a heart-shaped hole 231. One end of the spring 220 is hung on the heart-shaped hole 231, and the other end is hung on the moving plate 210. The transmission mechanism 300 also includes a connecting seat 320, one end of the connecting seat 320 is connected to the transmission column 310, and the other end abuts against the moving plate 210.

[0056] More specifically, in this embodiment, the sealing assembly 400 is fixed to the fixing groove 131 by welding, and the upper cover shell 110 and the base 120 are formed as a whole by welding.

[0057] More specifically, the sealing assembly 400 and the fixing groove 131 are fixed by thermal welding, and the upper cover shell 110 and the base 120 are fixed by ultrasonic welding.

[0058] More specifically, in this embodiment, the shell 100 also includes a shielding layer 140, a graphite layer 150, and a metal layer 160. The shielding layer 140 is arranged inside the shell 100 of the upper cover shell 110 or on the inner side of the upper cover shell 110, the graphite layer 150 wraps the outer side of the shell 100, and the metal layer 160 wraps the graphite layer 150.

[0059] The shielding layer 140 may be a metal plate, a metal mesh, metal particles, etc. In the present embodiment, the shielding layer 140 is a metal mesh, and the metal mesh is disposed inside the housing 100 of the upper cover shell 110 .

[0060] More specifically, the shielding layer 140 can be made of any metal material, such as copper, aluminum, nickel, silver, etc. In the present embodiment, the shielding layer 140 is a copper mesh made of copper material, and the copper mesh is embedded in the upper shell 100 .

[0061] More specifically, the metal layer 160 can be made of any metal material, such as a chrome-plated layer, a nickel-plated layer, a zinc-plated layer, a stainless steel layer, or an aluminum alloy layer. The chrome-plated layer has low cost, beautiful appearance, high hardness, good wear resistance, and good corrosion resistance. The nickel-plated layer has excellent corrosion resistance, high hardness, wear resistance, and good appearance. The zinc-plated layer has low cost and good corrosion resistance, especially in an atmospheric environment. The stainless steel layer has excellent corrosion resistance, high strength, and high temperature resistance. The aluminum alloy layer has light weight, good corrosion resistance, and is easy to process and shape.

[0062] This embodiment adopts heat welding and ultrasonic welding to fix the sealing assembly 400 and connect the upper and lower cover shells, respectively, to achieve more reliable sealing and connection strength, and embeds a copper mesh as a shielding layer 140 inside the upper cover shell 110 to effectively block electromagnetic interference. At the same time, the multiple protections of the graphite layer 150 and the metal layer 160 are used to further improve the corrosion resistance of the micro switch and extend its service life, so that it can better cope with harsh outdoor environments. It is particularly suitable for application scenarios such as electric vehicle charging guns that have high requirements for waterproofing, dustproofing, anti-interference and corrosion resistance.

[0063] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the application. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a restriction. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in the subsequent accompanying drawings.

[0064] In addition, it should be noted that the use of terms such as "first" and "second" to limit is only for the convenience of distinction. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0065] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A protective micro switch, characterized in that: include: A housing (100), wherein a transmission mechanism (300) is arranged inside the housing (100), wherein the transmission mechanism (300) partially passes through the housing (100), and wherein a sealing component (400) is arranged on the transmission mechanism (300), wherein the sealing component (400) wraps around the transmission mechanism (300) and is connected to the housing (100) to form a sealed cavity.

2. The protective micro switch according to claim 1, characterized in that: The sealing component (400) comprises a closed end and an embedded end, the inner wall of the closed end is provided with a sealing ring (410), the closed end and the sealing ring (410) tightly wrap the transmission mechanism (300), and the embedded end is embedded in the housing (100).

3. The protective micro switch according to claim 2, characterized in that: The transmission mechanism (300) comprises a transmission column (310), one end of the transmission column (310) passes through the housing (100), a groove is provided on the transmission column (310), the sealing ring (410) is interference fit with the groove, and a fixing ring (130) is further provided on the housing (100), the fixing ring (130) is arranged around the transmission column (310), a fixing groove (131) is provided in the fixing ring (130), a raised rib (132) is provided in the fixing groove (131), and the embedded end is embedded in the fixing groove (131) and interference fits with the raised rib (132).

4. The protective micro switch according to claim 3, characterized in that: The housing (100) comprises an upper cover shell (110) and a base (120); a through hole is provided on the upper cover shell (110); the transmission column (310) passes through the through hole and passes out of the upper cover shell (110); a quick-acting mechanism (200) is also provided in the housing (100); the quick-acting mechanism (200) comprises a moving plate (210), a spring (220) and a support rod (230); one end of the support rod (230) is fixedly connected to the base (120); the other end of the support rod (230) is provided with a heart-shaped hole (231); one end of the spring (220) is connected to the heart-shaped hole (231); the other end of the spring (220) is connected to the moving plate (210); the transmission mechanism (300) further comprises a connecting seat (320); one end of the connecting seat (320) is connected to the transmission column (310); the other end of the connecting seat (320) is abutted against the moving plate (210).

5. The protective micro switch according to claim 4, characterized in that: The sealing assembly (400) and the fixing groove (131) are fixed by welding, and the upper cover shell (110) and the base (120) are formed into a whole by welding.

6. The protective micro switch according to claim 5, characterized in that: The shell (100) further comprises a shielding layer (140), a graphite layer (150), and a metal layer (160); the shielding layer (140) is arranged inside the shell (100) of the upper cover shell (110) or on the inner side of the upper cover shell (110); the graphite layer (150) wraps the outer side of the shell (100); and the metal layer (160) wraps the graphite layer (150).

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