Microswitch with good durability

Abstract

The utility model discloses a microswitch with good durability, which comprises a base and a cover shell, two sides of the base are provided with annular plates protruding outwards, the middle of each annular plate is provided with a through hole penetrating through the base, the cover shell is provided with a round hole matched with the through hole, and a first glue injection groove and a second glue injection groove are arranged between the base and the cover shell. The annular plate is located in the first glue injection groove, the first glue injection groove and the second glue injection groove are filled with waterproof sealant fixedly connected with the base and the cover shell, and a sealing plate for isolating the first glue injection groove and the second glue injection groove from the outside is arranged below the base. The sealing plate is fixedly connected with the cover shell and the base through waterproof sealant, and the sealing plate is provided with an insertion hole for the guide piece to penetrate through. The beneficial effects of the utility model are that the waterproof sealant in the microswitch does not directly contact with the outside, thereby delaying the aging speed of the waterproof sealant and improving the durability of the microswitch.

Description

Technical Field

[0001] The utility model belongs to the technical field of micro switches, and in particular relates to a micro switch with good durability. Background Art

[0002] A micro switch is an electrical switch that usually uses a spring-loaded contact. Its biggest feature is that the switch can connect or disconnect the circuit with only a small mechanical displacement, and has high sensitivity and reliability. The micro switch can play different roles such as connection, disconnection, and conversion in the process of signal transmission, and is widely used in electronics, machinery, instruments, automobiles, home appliances, communications and other fields.

[0003] The micro switch includes a base and a cover shell, and the base and the cover shell are mostly fixedly connected by pouring waterproof sealant. However, after the waterproof sealant is poured, it is directly in contact with the outside world. After long-term use, the glue is easily aged, resulting in failure of the connection between the base and the cover shell, making the durability of the micro switch poor. Summary of the invention

[0004] In view of the existing micro switch, the potting glue between the base and the cover is in direct contact with the outside world, which is prone to rapid aging after long-term use, resulting in failure of the connection between the base and the cover, affecting the durability of the micro switch. The following utility model is now proposed:

[0005] A micro switch with good durability comprises a base and a cover shell, wherein both sides of the base are provided with annular plates protruding outward, a through hole penetrating the base is provided in the middle of the annular plates, a circular hole matching the through hole is provided on the cover shell, a first glue injection groove and a second glue injection groove are provided between the base and the cover shell, the annular plate is located in the first glue injection groove, the first glue injection groove and the second glue injection groove are filled with waterproof sealant that fixes the base and the cover shell together, a sealing plate is provided below the base that isolates the first glue injection groove and the second glue injection groove from the outside world, the sealing plate is fixedly connected to the cover shell and the base through the waterproof sealant, and a plug hole for a guide plate to pass through is provided on the sealing plate.

[0006] Furthermore, a first sealing groove is provided at the opening of the cover shell, a second sealing groove connected to the first sealing groove is provided on the outer side of the sealing plate, and a sealing frame is provided in the first sealing groove and the second sealing groove and fixedly connected to the two by waterproof sealant to isolate the gap between the cover shell and the base from the outside world.

[0007] Furthermore, a sealing sticker is provided below the sealing frame to separate the gap between the sealing frame and the cover shell and the sealing plate from the outside.

[0008] The beneficial effect of the utility model is that the sealing plate and the sealing frame are used to isolate the waterproof sealant from the outside world, so as to delay the aging speed of the waterproof sealant, improve the stability of the connection between the base and the cover shell, and extend the service life of the micro switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 The three-dimensional structure of the micro switch in the utility model is shown in FIG. Figure 1 ;

[0010] Figure 2 The three-dimensional structure of the micro switch in the utility model is shown in FIG. Figure 2 ;

[0011] Figure 3 This is a schematic diagram of the split structure of the micro switch in the utility model;

[0012] Figure 4 It is a three-dimensional structural schematic diagram of the base in the utility model.

[0013] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0014] 1. Base; 2. Cover shell; 3. Sealing plate; 4. First sealing groove; 5. Second sealing groove; 6. Sealing frame; 7. Sealing sticker; 11. Guide plate; 12. First glue injection groove; 13. Second glue injection groove; 14. Ring plate; 15. Through hole; 31. Socket. DETAILED DESCRIPTION

[0015] The technical solution of the utility model will be clearly and completely described below in conjunction with embodiments.

[0016] Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0017] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0018] like Figure 1-Figure 4 As shown, it is a preferred embodiment of the utility model, a micro switch with good durability, including a base 1 and a cover shell 2, the base 1 is equipped with a plurality of guide pieces 11 extending downward, the cover shell 2 is sleeved on the base 1, two annular plates 14 protruding outward are respectively provided on both sides of the base 1, and a through hole 15 that passes through the base 1 horizontally is provided at the center of the annular plate 14, and the cover shell 2 is provided with a circular hole that matches the through hole 15, wherein a first glue injection groove 12 and a second glue injection groove 13 are provided at the connection between the base 1 and the cover shell 2. The annular plate 14 is located in the first glue injection groove 12, and the first glue injection groove 12 surrounds the annular plate 14. The first glue injection groove 12 and the second glue injection groove 13 are filled with waterproof sealant to fix the base 1 and the cover shell 2. A sealing plate 3 is provided below the base 1 to isolate the first glue injection groove 12 and the second glue injection groove 13 from the outside world. The sealing plate 3 is fixedly connected to the cover shell 2 and the base 1 through the waterproof sealant, and a plurality of plug holes 31 for the guide plate 11 to pass through are provided on the sealing plate 3.

[0019] The first glue injection groove 12 and the second glue injection groove 13 are filled with waterproof sealant to fix the base 1 and the cover shell 2. After the sealing plate 3 is covered on the opening of the cover shell 2, the first glue injection groove 12 and the second glue injection groove 13 are isolated from the outside world, so that the waterproof sealant between the cover shell 2 and the base 1 is not directly in contact with the outside world, which slows down the aging speed of the waterproof sealant, improves the reliability of the connection between the base 1 and the cover shell 2, and increases the service life of the micro switch.

[0020] In this embodiment, a first sealing groove 4 is provided at the opening of the cover shell 2, and a second sealing groove 5 is provided on the outer side of the sealing plate 3. The first sealing groove 4 and the second sealing groove 5 are connected to form a total sealing groove, and a sealing frame 6 is provided in the total sealing groove to fit and fix the two together through a waterproof sealant.

[0021] The sealing frame 6 isolates the gap between the cover shell 2 and the sealing plate 3 from the outside, thereby reducing the aging speed of the waterproof sealant between the cover shell 2 and the sealing plate 3 .

[0022] In this embodiment, a sealing sticker 7 is provided below the sealing frame 6, and the sealing sticker 7 is attached to the gap between the sealing frame 6 and the cover shell 2 and the sealing plate 3 to further separate the waterproof sealant from the outside and improve the service life of the micro switch.

[0023] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A micro switch with good durability, comprising a base (1) and a cover shell (2), wherein the base (1) is provided with annular plates (14) protruding outward on both sides, the annular plates (14) are provided with a through hole (15) penetrating the base (1) in the middle, and the cover shell (2) is provided with a circular hole matching the through hole (15), characterized in that: A first glue injection groove (12) and a second glue injection groove (13) are provided between the base (1) and the cover shell (2); the annular plate (14) is located in the first glue injection groove (12); the first glue injection groove (12) and the second glue injection groove (13) are filled with waterproof sealant for fixedly connecting the base (1) and the cover shell (2); a sealing plate (3) is provided below the base (1) for isolating the first glue injection groove (12) and the second glue injection groove (13) from the outside; the sealing plate (3) is fixedly connected to the cover shell (2) and the base (1) via the waterproof sealant; and a plug hole (31) for the guide plate (11) to pass through is provided on the sealing plate (3).

2. The micro switch according to claim 1, characterized in that: A first sealing groove (4) is provided at the opening of the cover shell (2), a second sealing groove (5) connected to the first sealing groove (4) is provided on the outer side of the sealing plate (3), and a sealing frame (6) is provided in the first sealing groove (4) and the second sealing groove (5) and fixedly connected to the first sealing groove (4) and the second sealing groove (5) by a waterproof sealant so as to isolate the gap between the cover shell (2) and the base (1) from the outside.

3. The micro switch according to claim 2, characterized in that: A sealing sticker (7) is provided below the sealing frame (6) to separate the gap between the sealing frame (6) and the cover shell (2) and the sealing plate (3) from the outside.

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