Square press waterproof microswitch

Abstract

The utility model relates to a square press waterproof microswitch, comprising a hollow housing, the housing is internally provided with a pedestal, a conductive module installed on the pedestal, and a circuit board electrically connected with the conductive module, the housing is provided with a through hole, the through hole is provided with a press, and the periphery of the press is sleeved with a sealing ring; the pressing part is located outside the shell, the sliding part is movably inserted into the through hole, the connecting part is located inside the shell and abuts against the conductive module, the sliding part is of a square cylinder structure, and inwards-concave stepped grooves are formed in the four edges of the square cylinder structure. And the through hole is matched with the sliding part. According to the utility model, the pressing part with the square sliding part is adopted, so that in the same space, the size is larger, the strength is higher, the contact area between the sliding part and the inner wall of the through hole is larger, and the pressing part is more stable and longer in service life in the conversion process under the condition of oblique operation.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of microswitch, specifically, especially, it relates to a square presser waterproof microswitch. BACKGROUND

[0002] The microswitch is a kind of switch with small contact interval and fast-moving mechanism, which is covered by shell, and has driving rod outside.It is part of microswitch that presser triggers switch action by external mechanical force, so as to change the on-off state of circuit.The presser needs to be pressed by the action of the lever, and the lever is usually pushed obliquely when pressing the presser, that is, there is a certain angle between the lever and the presser.

[0003] Most of the existing pressers are cylindrical structures, which are slidingly fitted with the shell, and it is found in actual use that the contact surfaces of the cylindrical presser and the shell are arc surfaces, and under the oblique pushing action of the lever, the presser arc surface contacts and slides with the shell, so that the presser stress point is unstable and easy to shake, and the stability is poor, and the contact area between the presser and the shell is small, which also easily aggravates the wear of the presser. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model provides a square presser waterproof microswitch with larger contact area with shell and stronger stability.

[0005] The utility model discloses the purpose that realizes through the following technical scheme:

[0006] A square presser waterproof microswitch, comprising a hollow shell, the shell is equipped with: base, install the conductive module on the base, and the circuit board that is electrically connected with the conductive module, the shell is equipped with through-hole, the presser is equipped at the through-hole, the outer periphery of the presser is equipped with sealing ring;The presser includes the pressing part located at the outside of the shell, the sliding part that is movably inserted in the through-hole, and the connecting part located in the shell and abutting with the conductive module, the sliding part is square column structure, and four edges of the square column structure are equipped with the recessed step groove, and the through-hole is matched with the sliding part.

[0007] In the above technical scheme, on the one hand, the sealing ring around the presser can seal the gap formed between the through-hole and the presser, avoid external moisture from entering the shell through the gap to damage the internal components, and ensure the stable operation of the switch in humid environment.

[0008] In another aspect, the presser is composed of three parts, i.e. the pressing part, the sliding part and the connecting part, so that the functions of the presser can be easily distinguished, i.e. the pressing part serves as the part for external pressing and plays the role of positioning pressing, the sliding part serves as the part for connecting with the shell and plays the role of maintaining the stability of the presser, and the connecting part serves as the part for connecting the conductive module and plays the role of controlling the on-off of electricity, so that the convenience of using the presser can be effectively improved. In addition, in the same space, the sliding part is designed as a square column structure, so that the volume of the presser is larger and the strength is higher, and the service life is longer under the application condition of oblique pushing. Moreover, the four edges of the sliding part are provided with the concave stepped grooves, so that the contact area between the sliding part and the inner wall of the through hole is larger and the stress points are more, and the presser is more stable in the pressing conversion process. Furthermore, the presser is more stable in the conversion process under the oblique operation condition and has a longer service life.

[0009] Optionally, in a possible implementation, the shell is provided with an integral bending type pressing handle, one end of the pressing handle is inserted on the shell, and the other end extends directly above the pressing part.

[0010] In the above technical solution, the pressing handle is used for pressing the presser, the integral bending type structure has a certain elastic reset function, one end of the pressing handle is inserted on the shell, and the other end extends directly above the pressing part, so that the stability of the pressing handle can be ensured, and the user can directly and accurately touch the pressing part during operation.

[0011] Optionally, in a possible implementation, the shell is further provided with an elastic extension block, the elastic extension block is located below the pressing handle, one end of the elastic extension block is connected with the shell, and the other end is in a suspended state.

[0012] In the above technical solution, the elastic extension block can provide additional buffering effect when the user operates the pressing handle, so that the impact force directly transmitted to the shell during pressing is reduced, and the damage to the shell is reduced. At the same time, the pressing handle can produce a certain elastic feedback when being pressed, so that the operation feeling of the user is enhanced.

[0013] Optionally, in a possible implementation, a first annular clamping groove is arranged at the connection between the pressing part and the sliding part, a clamping hole is arranged at the top end of the sealing ring, the clamping hole is clamped on the first annular clamping groove, and the cooperation between the sealing ring and the first annular clamping groove is an interference fit.

[0014] In the above technical solution, since the interference fit is adopted between the sealing ring and the first annular clamping groove, the two parts are tightly combined, the leakage of liquid, gas or fine particles is effectively prevented, and the overall sealing performance is improved. At the same time, the clamping design of the clamping hole and the first annular clamping groove also effectively simplifies the installation process.

[0015] Optionally, in a possible implementation, a second annular clamping groove is arranged on the outer shell at the outer periphery of the through hole, and the bottom end of the sealing ring is hot-pressed in the second annular clamping groove.

[0016] In the above technical solution, the second annular clamping groove is arranged at the outer periphery of the through hole, and the bottom end of the sealing ring is hot-pressed therein, thereby forming a double-sealing structure assisted by the first annular clamping groove. This design greatly improves the reliability and safety of the sealing, effectively prevents the infiltration of water vapor, and is suitable for application scenarios with higher sealing requirements.

[0017] Optionally, in a possible implementation, the connection between the pressing part and the sliding part is a cylinder, the first annular clamping groove is located at the outer periphery of the cylinder, and the diameter of the cylinder is 2.0-2.5 times the diameter of the clamping hole.

[0018] In the above technical solution, the design of the cylinder makes the position and shape of the first annular clamping groove more stable, providing a reliable reference for the precise installation of the sealing ring. At the same time, the diameter of the cylinder is 2.0-2.5 times the diameter of the clamping hole, and this size ratio ensures that the sealing ring can be clamped into the first annular clamping groove during installation while maintaining sufficient tightening force to prevent the sealing ring from loosening or falling off.

[0019] Optionally, in a possible implementation, a part assembly cavity is arranged on the outer shell, and an epoxy resin sealing layer is arranged in the part assembly cavity.

[0020] In the above technical solution, the arrangement of the part assembly cavity can facilitate the installation of the conductive module, the base, and the circuit board. After installation, the epoxy resin sealing layer arranged at the opening of the part assembly cavity can effectively prevent external pollutants such as water and dust from entering the interior of the equipment, and can also enhance the structural strength of the outer shell to some extent.

[0021] Optionally, in a possible implementation, a plurality of elastic clamping blocks are arranged on opposite sides of the base, a plurality of slot holes corresponding to the elastic clamping blocks are arranged in the outer shell, and the plurality of elastic clamping blocks are clamped in the corresponding slot holes.

[0022] In the above technical solution, the design of the elastic clamping blocks and the slot holes can realize quick clamping between the outer shell and the base, greatly simplifying the assembly process and improving production efficiency. At the same time, not only a stable connection is provided, but also a certain buffering and shock-absorbing effect is achieved. When the equipment is subjected to external impact or vibration, the elastic clamping blocks can absorb part of the energy, reducing the impact on the outer shell and the base.

[0023] Optionally, in a possible implementation, the circuit board is provided with a resistor, a wire welding hole and a terminal welding hole, the conductive module is electrically connected with the circuit board through the terminal welding hole, and the wire welding hole is provided with a wire extending to the outside of the shell.

[0024] In the technical solution, the resistor, the wire welding hole and the terminal welding hole designed on the circuit board, and the electrical connection of the conductive module with the circuit board through the terminal welding hole jointly constitute a stable and reliable electrical connection system, and the design of the wire facilitates the connection of the micro switch with external equipment.

[0025] Optionally, in a possible implementation, the shell is further provided with a plurality of mounting columns.

[0026] In the technical solution, the mounting columns are designed to facilitate the mounting of the shell, so that the mounting process of the micro switch is more convenient. The user can fix the mounting columns on the equipment by using screws or other fasteners, and thus easily complete the installation of the micro switch. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0028] Figure 1 It is an overall structure of an embodiment.

[0029] Figure 2 It is a structure schematic diagram of an embodiment.

[0030] Figure 3 It is an overall structure assembly drawing of an embodiment.

[0031] Figure 4 It is a structure schematic diagram of a shell of an embodiment.

[0032] The reference signs: 1 - shell; 11 - through hole; 12 - second annular clamping groove; 13 - elastic extension block; 14 - part assembly cavity; 15 - mounting column; 2 - base; 21 - elastic clamping block; 3 - conductive module; 4 - circuit board; 41 - resistor; 42 - wire welding hole; 43 - terminal welding hole; 44 - wire; 5 - press; 51 - pressing part; 52 - sliding part; 521 - stepped groove; 53 - connecting part; 54 - first annular clamping groove; 6 - sealing ring; 61 - clamping hole; 7 - pressing handle; 8 - epoxy resin sealing layer. DETAILED DESCRIPTION

[0033] So that the purposes, technical solutions and advantages of the embodiments of the present application are more apparent, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0035] Please refer to Figure 1 The present embodiment provides a square waterproof micro-press switch, comprising a hollow shell 1, the shell 1 is provided with: a base 2, a conductive module 3 mounted on the base 2, and a circuit board 4 electrically connected with the conductive module 3, the shell 1 is provided with a through hole 11, the through hole 11 is provided with a press 5, and the press 5 is provided with a sealing ring 6 around the outer periphery; the press 5 comprises a pressing part 51 located outside the shell 1, a sliding part 52 movably inserted into the through hole 11, and a connecting part 53 located inside the shell 1 and abutting against the conductive module 3, the sliding part 52 is a square column structure, and the four edges of the square column structure are provided with concave stepped grooves 521, and the through hole 11 is matched with the sliding part 52. Specifically, the base 2 is fixedly installed inside the shell 1, the conductive module 3 is installed on the base 2 and located above the base 2, and the circuit board 4 is located below the base 2 and can be welded and fixed with the terminals on the conductive module 3. It should be noted that the conductive module 3 is a conventional structure, and the conductive module 3 can be turned on and off by pressing the press 5, and the specific structure is not described here.

[0036] The sealing ring 6 around the press 5 of the present embodiment can seal the gap between the through hole 11 and the press 5, avoid the external water vapor entering the shell 1 from the gap to damage the internal components, and ensure the stable operation of the switch in a humid environment.

[0037] In addition, the presser 5 is composed of three parts, i.e., the pressing part 51, the sliding part 52 and the connecting part 53, so that the functions of the presser 5 can be easily distinguished, i.e., the pressing part 51 serves as the position for external pressing and plays a role in positioning pressing, the sliding part 52 serves as the position connected with the shell 1 and plays a role in maintaining the stability of the presser 5, and the connecting part 53 serves as the position for linkage of the conductive module 3 and plays a role in controlling on-off electricity, so that the use convenience of the presser 5 can be effectively improved. In addition, in the same space, the sliding part 52 is designed as a square column structure, so that the presser 5 has a larger volume and higher strength and has a longer service life under the application condition of oblique pushing. In addition, the four edges of the sliding part 52 are provided with the concave stepped grooves 521, so that the contact area of the sliding part 52 with the inner wall of the through hole 11 is larger and the stress points are more, and the presser 5 is more stable in the pressing conversion process. In addition, the presser 5 is more stable in the conversion process under the oblique operation condition and has a longer service life.

[0038] In the embodiment, the shell 1 is provided with the one-piece bending type pressing handle 7, one end of the pressing handle 7 is inserted into the shell 1 and the other end extends above the pressing part 51. The pressing handle 7 is used for pressing the presser 5, the one-piece bending type structure has a certain elastic reset function, one end of the pressing handle 7 is inserted into the shell 1 and the other end extends above the pressing part 51, so that the stability of the pressing handle 7 can be ensured and the user can directly and accurately touch the pressing part 51 when operating.

[0039] In addition, the shell 1 of the embodiment is further provided with the elastic extension block 13, the elastic extension block 13 is located below the pressing handle 7, one end of the elastic extension block 13 is connected with the shell 1 and the other end is in a suspended state.

[0040] The elastic extension block 13 can provide additional buffering effect when the user operates the pressing handle 7, so that the impact force directly transmitted to the shell 1 in the pressing process is reduced and the damage to the shell 1 is reduced. At the same time, the pressing handle 7 can produce a certain elastic feedback when being pressed, so that the operation feeling of the user is enhanced.

[0041] In the embodiment, the first annular clamping groove 54 is arranged at the connection position of the pressing part 51 and the sliding part 52, the top end of the sealing ring 6 is provided with the clamping hole 61, the clamping hole 61 is clamped on the first annular clamping groove 54, and the cooperation between the sealing ring 6 and the first annular clamping groove 54 is an interference fit. The pressing part 51 is a hemispherical structure, the sealing ring 6 is a conical structure with large top and small bottom, when the sealing ring 6 is installed on the first annular clamping groove 54, the sealing ring 6 is sleeved on the pressing part 51, the clamping hole 61 is aligned with the pressing part 51, then the sealing ring 6 is pulled down with force, and the clamping hole 61 is clamped into the first annular clamping groove 54 by relying on the elasticity of the sealing ring 6.

[0042] Due to the interference fit between the sealing ring 6 and the first annular clamping groove 54, the two are tightly combined, effectively preventing the leakage of liquid, gas or fine particles, and improving the overall sealing performance. At the same time, the clamping design of the clamping hole 61 and the first annular clamping groove 54 effectively simplifies the installation process.

[0043] In this embodiment, a second annular clamping groove 12 is provided on the outer shell 1 at the outer periphery of the through hole 11, and the bottom end of the sealing ring 6 is hot-pressed in the second annular clamping groove 12. Specifically, an annular boss can be provided at the outer periphery of the through hole 11, and the second annular clamping groove 12 is formed in the annular boss. Among them, the outer shell 1 adopts a plastic material, the sealing ring 6 adopts a silica gel material, the bottom end of the sealing ring 6 adopts a hot riveting process, and the hot deformation of the plastic is used to extrude the silica gel sealing ring 6 to achieve sealing.

[0044] This embodiment sets a second annular clamping groove 12 at the outer periphery of the through hole 11, and hot-presses the bottom end of the sealing ring 6 therein, forming a double-sealing structure assisted by the first annular clamping groove 54. This design greatly improves the reliability and safety of the seal, effectively preventing the infiltration of water vapor, and is suitable for application scenarios with higher sealing requirements. For example, the hot-pressed sealing ring 6 can better adapt to complex working environments such as high temperature, high pressure, and corrosive media, maintaining good sealing effect and ensuring stable operation of the equipment.

[0045] In this embodiment, the connection between the pressing part 51 and the sliding part 52 is a cylinder, the first annular clamping groove 54 is located on the outer periphery of the cylinder, and the diameter of the cylinder is 2.0-2.5 times the diameter of the clamping hole 61. The diameter of the cylinder is smaller than the minimum outer diameter of the lower end surface of the pressing part 51, and also smaller than the minimum outer diameter of the upper end surface of the sliding part 52.

[0046] The design of the cylinder makes the position and shape of the first annular clamping groove 54 more stable, providing a reliable reference for the precise installation of the sealing ring 6. At the same time, the diameter of the cylinder is 2.0-2.5 times the diameter of the clamping hole 61, which ensures that the sealing ring 6 can be clamped into the first annular clamping groove 54 during installation, while maintaining sufficient tightening force to prevent the sealing ring 6 from loosening or falling off.

[0047] In this embodiment, the outer shell 1 is provided with a part assembly cavity 14, and the part assembly cavity 14 is provided with an epoxy resin sealing layer 8. The part assembly cavity 14 is located in the outer shell 1, that is, it is used as a hollow cavity in the outer shell 1, and has an opening communicating with the outside. The through hole 11 is located at the top of the outer shell 1, and the part assembly cavity 14 can facilitate the installation of the conductive module 3, the base 2 and the circuit board 4. After installation, the epoxy resin sealing layer 8 is set at the opening of the part assembly cavity 14, which can effectively prevent external pollutants such as water and dust from entering the interior of the equipment, and also can enhance the structural strength of the outer shell 1 to a certain extent.

[0048] The base 2 is provided with a plurality of elastic clamping blocks 21 on opposite sides, the shell 1 is provided with a plurality of corresponding slot holes, and the plurality of elastic clamping blocks 21 are clamped in the corresponding slot holes. Specifically, the elastic clamping blocks 21 and the slot holes are designed to realize quick clamping between the shell 1 and the base 2, greatly simplifying the assembly process and improving production efficiency. At the same time, not only a stable connection is provided, but also a certain buffering and shock absorption effect is provided. When the device is subjected to external impact or vibration, the elastic clamping blocks 21 can absorb part of the energy and reduce the impact on the shell 1 and the base 2.

[0049] In the embodiment, the circuit board 4 is provided with a resistor 41, a wire welding hole 42 and a terminal welding hole 43, the conductive module 3 is electrically connected with the circuit board 4 through the terminal welding hole 43, the wire welding hole 42 is provided with a wire 44, and the wire 44 extends to the outside of the shell 1. The resistor 41, the wire welding hole 42 and the terminal welding hole 43 designed on the circuit board 4 and the electrical connection of the conductive module 3 with the circuit board 4 through the terminal welding hole 43 jointly constitute a stable and reliable electrical connection system, and the design of the wire 44 facilitates the connection of the micro switch with external equipment.

[0050] It should be noted that the shell 1 is also provided with a plurality of mounting columns 15. The mounting columns 15 are designed to facilitate the installation of the shell 1, so that the installation process of the micro switch is more convenient. The user can use screws or other fasteners to fix the mounting columns 15 on the equipment, so that the installation of the micro switch can be easily completed.

[0051] In the description of the present application, it should be understood that the terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0052] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0053] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A square, waterproof, push-button micro switch, comprising a hollow housing, wherein the housing contains: a base, a conductive module mounted on the base, and a circuit board electrically connected to the conductive module, characterized in that, The shell is provided with a through hole, and a press button is arranged at the through hole, and a sealing ring is arranged on the outer periphery of the press button; the press button comprises a pressing part arranged outside the shell, a sliding part movably arranged in the through hole, and a connecting part arranged inside the shell and abutting against the conductive module; the sliding part is a square column structure, and a stepped groove is arranged at each of the four edges of the square column structure; and the through hole is matched with the sliding part.

2. The square push-button waterproof microswitch according to claim 1, characterized in that, The shell is provided with an integral bending type pressing handle, one end of the pressing handle is inserted into the shell, and the other end extends above the pressing part.

3. The square push-button waterproof microswitch according to claim 2, characterized in that, The shell is further provided with an elastic extension block, the elastic extension block is arranged below the pressing handle, one end of the elastic extension block is connected with the shell, and the other end is in a suspended state.

4. The square push-button waterproof microswitch according to claim 1, wherein, A first annular clamping groove is arranged at the connection between the pressing part and the sliding part, a clamping hole is arranged at the top end of the sealing ring, the clamping hole is clamped on the first annular clamping groove, and the sealing ring and the first annular clamping groove are in interference fit.

5. The square push-button waterproof microswitch according to claim 4, characterized in that, A second annular clamping groove is arranged at the outer periphery of the through hole of the shell, and the bottom end of the sealing ring is hot-pressed in the second annular clamping groove.

6. The square push-button waterproof micro-switch according to claim 4, characterized in that, The connection between the pressing part and the sliding part is a cylindrical body, the first annular clamping groove is arranged on the outer periphery of the cylindrical body, and the diameter of the cylindrical body is 2.0-2.5 times the diameter of the clamping hole.

7. The square push-button waterproof micro-switch according to claim 1, wherein, The shell is provided with a part assembly cavity, and an epoxy resin sealing layer is arranged in the part assembly cavity.

8. The square push-button waterproof micro-switch according to claim 1, wherein, The base is provided with a plurality of elastic clamping blocks on opposite sides, the shell is provided with a plurality of groove holes corresponding to the elastic clamping blocks, and the elastic clamping blocks are clamped in the corresponding groove holes.

9. The square push-button waterproof micro-switch according to claim 1, wherein, The circuit board is provided with a resistor, a wire welding hole and a terminal welding hole, the conductive module is electrically connected with the circuit board through the terminal welding hole, a wire is arranged at the wire welding hole, and the wire extends to the outside of the shell.

10. The square push-button waterproof microswitch according to any one of claims 1-9, characterized in that, The shell is further provided with a plurality of mounting columns.

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