Button switch with good sealing effect

Abstract

The utility model discloses a button switch with a good sealing effect, which comprises a shell and a button body arranged in the shell, the shell is provided with an extension part, the extension part is provided with a sealing sleeve, an O-shaped sealing ring is arranged between the sealing sleeve and the shell, the sealing sleeve is provided with a wire protecting sleeve, and the wire protecting sleeve is provided with a sealing ring. A structure used for forming labyrinth sealing is arranged between the wire protecting sleeve and the sealing sleeve, and the button body is provided with a wire. Through the combined action of the sealing ring and the labyrinth sealing structure and dual sealing measures, the possibility that moisture, humid air and dust permeate into the button body is remarkably reduced, so that the service life of parts is remarkably prolonged, and the measures not only ensure the stable and reliable operation of the button switch, but also improve the reliability of the button switch. And the product has the advantages of good sealing performance, dust prevention, improved product reliability and the like.

Description

Technical Field

[0001] This utility model relates to the field of switch technology, and in particular to a push button switch with good sealing effect. Background Technology

[0002] A switch is an electronic component used to control the opening or closing of a circuit. Depending on its structure, switches are classified as push-button switches, rocker switches, touch switches, etc. A push-button switch is one that uses a button to actuate a transmission mechanism, causing the moving contact to connect or disconnect with the stationary contact, thus switching the circuit. It is simple in structure and widely used.

[0003] If the area beneath a traditional push-button switch panel is exposed to moisture and dust, the moisture and humid air can penetrate the switch, corroding the connections between the wires and terminals. This reduces insulation and accelerates the aging of internal components. Furthermore, dust adheres to the corroded connections, lowering contact resistance and causing overheating. These factors combined affect the switch's functionality and can even lead to complete failure. Therefore, the applicant has developed a beneficial design to address these problems, and the technical solution described below arose from this context. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of traditional push-button switch designs and provide a product with good sealing, dustproof properties, and improved product reliability.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A push button switch with good sealing effect includes a housing and a button body disposed therein. The housing has an extension portion and a sealing sleeve. An O-ring is provided between the sealing sleeve and the housing. The sealing sleeve has a wire sheath. A structure for forming a labyrinth seal is provided between the wire sheath and the sealing sleeve. The button body has a wire that passes through the wire sheath. Epoxy resin adhesive is provided between the wire sheath and the wire.

[0007] Preferably, the outer wall of the sealing sleeve is provided with a groove for accommodating an O-ring seal, the sealing sleeve is provided with a blind hole, and the blind hole is provided with a through hole for the sheath to pass through.

[0008] Preferably, the cable sleeve includes a guide portion and a limiting portion, wherein the guide portion is disposed within a blind hole.

[0009] Preferably, a recess is provided between the guide part and the limiting part, the recess abuts against the inner wall of the through hole, and the structure forming the labyrinth seal is set as the recess.

[0010] Preferably, a clamping force is formed between the guide portion and the limiting portion to hold the sealing sleeve.

[0011] Preferably, epoxy resin adhesive is provided between the sheath and the conductor, and the epoxy resin adhesive is applied to the outer wall of the conductor and disposed on the end face of the guide portion.

[0012] Preferably, the inlet of the guide portion into the sealing sleeve and the inlet of the sealing sleeve into the extension portion are provided with inclined surfaces.

[0013] Preferably, the button body has multiple leads that are electrically connected to wires.

[0014] Beneficial effects:

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention enhances the sealing performance between the sealing sleeve and the extension by using a sealing ring, ensuring a tight connection between the two. Simultaneously, the labyrinth-style sealing structure further improves the sealing effect between the sealing sleeve and the wire sheath, effectively blocking external dust. These dual sealing measures work together to significantly reduce the possibility of moisture, humid air, and dust penetrating into the button body, thereby significantly extending the service life of the components. These measures not only ensure the stable and reliable operation of the button switch but also guarantee its sealing performance and effectively prevent dust, greatly improving the product's reliability. Attached Figure Description

[0017] Figure 1 This is a side cross-sectional view of a push button switch with good sealing effect according to the present invention.

[0018] The correspondence between the labels and component names in the attached figures is as follows:

[0019] Reference numerals: 1. Housing; 2. Button body; 3. Sealing sleeve; 4. O-ring; 5. Cable sheath; 6. Wire; 7. Epoxy resin adhesive; 8. Inclined surface; 11. Extension; 21. Lead-out foot; 31. Groove; 32. Blind hole; 33. Through hole; 51. Guide part; 52. Limiting part; 53. Recessed groove. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In this embodiment of the utility model, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0023] Reference example Figure 1 A push button switch with good sealing performance includes a housing 1 and a push button body 2 disposed therein. The housing 1 has an extension 11, and the extension 11 has a sealing sleeve 3. An O-ring seal 4 is provided between the sealing sleeve 3 and the housing 1. The sealing sleeve 3 has a wire sheath 5. A structure for forming a labyrinth seal is provided between the wire sheath 5 and the sealing sleeve 3. The push button body 2 has a wire 6 that passes through the wire sheath 5. The sealing performance between the sealing sleeve 3 and the extension 11 is enhanced by the sealing ring, ensuring the tightness of the connection between the two. At the same time, the labyrinth seal structure further improves the sealing effect between the sealing sleeve 3 and the wire sheath 5, effectively blocking external dust. The dual sealing measures work together to significantly reduce the possibility of moisture, humid air and dust penetrating into the push button body 2, thereby significantly improving the service life of the components. These measures not only ensure the stable and reliable operation of the push button switch, but also ensure its sealing performance and effectively prevent dust, greatly improving the reliability of the product.

[0024] It is worth mentioning that the outer wall of the sealing sleeve 3 is provided with a groove 31 for accommodating the O-ring seal 4, and the sealing sleeve 3 is provided with a blind hole 32. The blind hole 32 is provided with a through hole 33 for the wire sheath 5 to pass through. The blind hole 32 serves to avoid the lead-out foot 21.

[0025] It is worth mentioning that the cable sleeve 5 includes a guide part 51 and a limiting part 52. The guide part 51 is disposed in the blind hole 32. When the guide part 51 is first inserted into the through hole 33, the cable sleeve 5 shrinks inward, and the diameter of the guide part 51 is reduced to be consistent with the through hole 33, so that the guide part 51 can pass through the through hole 33. Similarly, if there is already a wire 6 in the guide part 51, the through hole 33 will be expanded outward until the groove 53 coincides with the through hole 33.

[0026] It is worth mentioning that a groove 53 is provided between the guide part 51 and the limiting part 52. The groove 53 abuts against the inner wall of the through hole 33 to form a labyrinth seal structure. The groove 53 and the limiting part 52 form a tortuous gap. These gaps increase the path length of the gas or liquid medium. When the gas or liquid medium passes through these gaps, its pressure and velocity will gradually decrease, thereby reducing the leakage direction.

[0027] It is worth mentioning that a force is formed between the guide part 51 and the limiting part 52 to clamp the sealing sleeve 3, and a force is formed between the guide part 51 and the limiting part 52 to act on both ends of the through hole 33 to prevent the wire sleeve 5 from dislodging from the through hole 33.

[0028] It is worth mentioning that epoxy resin adhesive 7 is provided between the sheath 5 and the conductor 6. The epoxy resin adhesive 7 is applied to the outer wall of the conductor 6 and is set on the end face of the guide part 51. The epoxy resin adhesive 7 has extremely high bonding strength, good toughness and high tensile strength. Since the epoxy resin adhesive 7 is set in the blind hole 32, it avoids the erosion of the epoxy resin adhesive 7 by the humid environment and the external environment and accelerates its aging, thereby extending the service life of the epoxy resin adhesive 7. At the same time, the epoxy resin adhesive 7 here prevents the conductor 6 from detaching from the sheath 5.

[0029] It is worth mentioning that an inclined surface 8 is provided at the entrance of the guide part 51 into the sealing sleeve 3 and at the entrance of the sealing sleeve 3 into the extension part 11. The inclined surface 8 reduces the pushing force and friction required when the guide part 51 enters the through hole 33 and the sealing sleeve 3 enters the extension part 11.

[0030] It is worth mentioning that the button body 2 is provided with multiple lead-out pins 21, which are electrically connected to the wires 6.

[0031] The above design scheme enables the product to achieve advantages such as good safety, good stability, and good heat dissipation.

[0032] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A push-button switch with good sealing effect, comprising a housing (1) and a button body (2) disposed therein, characterized in that: The housing (1) is provided with an extension (11), the extension (11) is provided with a sealing sleeve (3), an O-ring (4) is provided between the sealing sleeve (3) and the housing (1), the sealing sleeve (3) is provided with a wire sheath (5), and a structure for forming a labyrinth seal is provided between the wire sheath (5) and the sealing sleeve (3). The button body (2) is provided with a wire (6) that passes through the wire sheath (5).

2. The push-button switch with good sealing effect according to claim 1, characterized in that: The outer wall of the sealing sleeve (3) is provided with a groove (31) for accommodating the O-ring (4), and the sealing sleeve (3) is provided with a blind hole (32), and the blind hole (32) is provided with a through hole (33) for the sheath (5) to pass through.

3. The push-button switch with good sealing effect according to claim 2, characterized in that: The cable sleeve (5) includes a guide part (51) and a limiting part (52), wherein the guide part (51) is disposed in the blind hole (32).

4. The push-button switch with good sealing effect according to claim 3, characterized in that: A recess (53) is provided between the guide part (51) and the limiting part (52), and the recess (53) abuts against the inner wall of the through hole (33). The structure forming the labyrinth seal is set as the recess (53).

5. The push-button switch with good sealing effect according to claim 3, characterized in that: The guide part (51) and the limiting part (52) form a force that clamps the sealing sleeve (3).

6. The push-button switch with good sealing effect according to claim 3, characterized in that: An epoxy resin adhesive (7) is provided between the protective sleeve (5) and the conductor (6). The epoxy resin adhesive (7) is applied to the outer wall of the conductor (6) and is provided on the end face of the guide part (51).

7. The push-button switch with good sealing effect according to claim 4, characterized in that: The guide section (51) has an inclined surface (8) at the entrance of the sealing sleeve (3) and the sealing sleeve (3) has an inclined surface (8) at the entrance of the extension section (11).

8. The push-button switch with good sealing effect according to claim 1, characterized in that: The button body (2) is provided with multiple lead-out pins (21) and is electrically connected to the wires (6).

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