Waterproof proximity switch

Abstract

The utility model discloses a waterproof proximity switch, which comprises a base and a top cover, a proximity switch is movably arranged on the base along the vertical direction, a wire outlet is arranged in the top cover, the lower end of the proximity switch extends out of the base, the upper end of the proximity switch extends into the wire outlet, and at least two connecting holes are arranged on the base and the top cover. Screws are arranged in the connecting holes to fixedly connect the base and the top cover, and the top cover rotates relative to the base to adjust the orientation of the wire outlet. Through the above mode, according to the waterproof proximity switch, the top cover and the base are arranged in a split manner, and the position of the top cover is adjusted, so that the appearance direction of the proximity switch is changed, and the assembly space is saved.

Description

Technical Field

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

[0002] The oil cylinder is one of the important parts of the shield machine. At present, the working environment of the oil cylinder of some shield machines is bad and needs to be immersed in mud for a long time. The proximity switches used in these oil cylinders need waterproof protection, and most of the existing proximity switch protection covers are not waterproof.

[0003] At the same time, the existing proximity switch wiring method is fixed. For example, the proximity switch disclosed in patent CN202210056846.1 has a wiring direction that cannot be adjusted, which is very inconvenient in actual installation and has poor adaptability. Summary of the invention

[0004] The main technical problem solved by the utility model is to provide a waterproof proximity switch. By separately arranging a top cover and a base, the position of the top cover can be adjusted to change the appearance direction of the proximity switch, thereby saving assembly space.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a waterproof proximity switch, including a base and a top cover, the base is provided with a proximity switch movably arranged in a vertical direction, the top cover is provided with a wire outlet, the lower end of the proximity switch extends out of the base, and the upper end extends into the wire outlet, at least two connecting holes are provided on the base and the top cover, screws are provided in the connecting holes to fix the base and the top cover, and the top cover is rotated relative to the base to adjust the direction of the wire outlet.

[0006] In a preferred embodiment of the present invention, the connecting hole is a through hole arranged in a vertical direction, and the screw passes through the connecting hole to fix the base and the top cover.

[0007] In a preferred embodiment of the present invention, the lower end of the screw is screwed into the external oil cylinder, thereby connecting the base to the oil cylinder.

[0008] In a preferred embodiment of the utility model, the connecting hole on the top cover is a through hole arranged in the vertical direction, and the connecting hole on the base is a blind hole arranged in the vertical direction. The screw passes through the connecting hole of the top cover and is screwed into the connecting hole on the base to securely connect the base and the top cover.

[0009] In a preferred embodiment of the utility model, the base is further provided with a mounting through hole, and a screw is installed in the mounting through hole so as to connect the base to the oil cylinder.

[0010] In a preferred embodiment of the present invention, the connection holes are evenly distributed along the circle where the centers of the base and the top cover are located.

[0011] In a preferred embodiment of the utility model, a mounting cavity is provided in the middle of the base, a connecting seat is provided at the lower end of the top cover, the top cover is connected to the base so that the connecting seat fits into the mounting cavity, and a straight-through connector connected to the wire outlet is also provided on the top cover.

[0012] In a preferred embodiment of the utility model, a sealing ring is embedded in the connecting seat, and the sealing ring seals between the connecting seat and the installation cavity.

[0013] In a preferred embodiment of the utility model, a sealing ring is embedded in the lower end of the base, and the sealing ring seals between the base and the oil cylinder.

[0014] The beneficial effects of the utility model are as follows: the waterproof proximity switch of the utility model adopts a detachable connection between the base and the top cover, which is convenient for adjusting the direction of the top cover, so that the wiring direction can be adjusted, the installation space is saved, the device can be repeatedly disassembled and used, and the cost is low.

[0015] The utility model waterproof proximity switch can adopt two different connection modes between the base, the top cover and the oil cylinder, which is convenient for disassembly and assembly of the top cover and the base, has a simple structure and is convenient for disassembly and assembly.

[0016] The utility model waterproof proximity switch is waterproof through the sealing rings on the top cover and the base, can be immersed in mud for use, and is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0018] Figure 1 This is a structural schematic diagram of a preferred embodiment of the waterproof proximity switch of the utility model;

[0019] Figure 2 yes Figure 1 A cross-sectional view of

[0020] Figure 3 yes Figure 1 Another cross-sectional view of

[0021] Figure 4 This is a schematic diagram of the structure of another state of the waterproof proximity switch of the utility model;

[0022] Figure 5 yes Figure 4 A cross-sectional view of

[0023] Figure 6 yes Figure 5 Another cross-sectional view of

[0024] The markings of the components in the accompanying drawings are as follows: 1. base, 11. mounting cavity, 2. top cover, 21. wire outlet, 22. connecting seat, 3. proximity switch, 4. straight-through connector, 5. screw. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiment of the utility model will be described clearly and completely below. The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification, so that people familiar with this technology can understand and read them, and are not used to limit the limiting conditions that can be implemented in the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that can be produced by the utility model and the purpose that can be achieved, should still fall within the scope that the technical content disclosed in the utility model can cover. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of narration, and are not used to limit the scope that can be implemented. The change or adjustment of the relative relationship, without substantial change of the technical content, should also be regarded as the scope that can be implemented in the utility model.

[0026] See also Figures 1 to 6 A waterproof proximity switch includes a base 1 and a top cover 2. A proximity switch 3 is movably provided on the base 1 in the vertical direction. A wire outlet 21 is provided in the top cover 2. The lower end of the proximity switch 3 extends out of the base 1, and the upper end extends into the wire outlet 21. A straight-through connector 4 connected to the wire outlet 21 is also provided on the top cover 2. The base 1 is connected to the oil cylinder, and the wiring is introduced from the wire outlet 21 and the straight-through connector 4 and connected to the proximity switch 3. The above structure is a conventional technical means in the art and will not be repeated here.

[0027] The middle of the base 1 is provided with an installation cavity 11, and the lower end of the top cover 2 is provided with a connection seat 22. The top cover 2 is connected to the base 1 so that the connection seat 22 fits into the installation cavity 11. A sealing ring is embedded in the connection seat 22, and the sealing ring seals the connection seat 22 and the installation cavity 11. A sealing ring is embedded in the lower end of the base 1, and the sealing ring seals the base 1 and the oil cylinder. The two sealing ring structures on the base 1 and the top cover 2 ensure the sealing of the proximity switch 3, prevent external water from entering the interior of the proximity switch 3, and achieve a waterproof function.

[0028] The top cover 2 and the base 1 can rotate relative to each other, and the direction of the outlet 21 can be adjusted according to the rotation position of the top cover 2 relative to the base 1. In this embodiment, the cylindrical top cover 2 and the base 1 are taken as examples to facilitate the description of the specific structure of adjusting the direction of the outlet 21.

[0029] Preferably, the base 1 is provided with four connection holes, two of which are through holes and the other two are blind holes. The top cover 2 is provided with two connection holes, both of which are through holes. The connection holes are evenly spaced along the circle where the center of the base 1 and the top cover 2 is located, and are all vertically arranged. By properly rotating the position of the top cover, the connection holes of the top cover 2 can be aligned with the through holes of the base 1 or with the blind holes.

[0030] like Figure 2 and Figure 3 As shown, the base 1 is placed on the installation position of the oil cylinder, and then the top cover 2 is installed on the base 1, and the connection hole of the top cover 2 and the through hole of the base 1 are maintained, and screws 5 are set in the connection holes to fix the base 1 and the top cover 2. At this time, long screws 5 are selected to pass through the connection holes to fasten the top cover 2 and the base 1, and the lower end of the screw 5 is screwed into the external oil cylinder, so that the base 1 is connected to the oil cylinder. The top cover 2, the base 1 and the external oil cylinder can be connected as a whole by two screws 5, and the installation of the proximity switch 3 is completed.

[0031] like Figure 4-Figure 6 When the direction of the wire outlet 21 needs to be adjusted, remove the above screws 5 and take off the top cover 2. Then install the screws 5 on the through holes of the base 1, and the screws 5 enter the external cylinder to connect the base 1 and the cylinder first. Then, adjust the position of the top cover 2, rotate the top cover 2 90° in the vertical direction for assembly, align the connection hole of the top cover 2 with the blind hole of the base 1, and install the screws 5 again. The screws 5 pass through the top cover 2 and are screwed into the blind hole to achieve the connection between the top cover 2 and the base 1. The base 1 and the external cylinder are connected by two screws 5, and the base 1 and the top cover 2 are connected by two screws 5. The direction adjustment of the wire outlet 21 and the installation of the proximity switch 3 are achieved through two installations.

[0032] The above structure can adjust the installation direction of the proximity switch according to needs, saving space for the oil cylinder assembly. The detachable assembly can be repeatedly used, which is lower in cost.

[0033] The number of the connection holes may be 3, 4 or more, and may be set according to actual needs to achieve adjustment of the top cover 2 to a certain angle.

[0034] Different from the prior art, the waterproof proximity switch of the utility model is provided with a top cover and a base separately, and the position of the top cover is adjusted to change the appearance direction of the proximity switch, thereby saving assembly space.

[0035] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A waterproof proximity switch, comprising a base (1) and a top cover (2), characterized in that: A proximity switch (3) is movably provided on the base (1) in a vertical direction, a wire outlet (21) is provided in the top cover (2), a lower end of the proximity switch (3) extends out of the base (1), and an upper end extends into the wire outlet (21), at least two connection holes are provided on the base (1) and the top cover (2), screws (5) are provided in the connection holes to fix the base (1) and the top cover (2), and the top cover (2) is rotated relative to the base (1) to adjust the direction of the wire outlet (21).

2. The waterproof proximity switch according to claim 1, characterized in that: The connection hole is a through hole arranged in a vertical direction, and the screw (5) passes through the connection hole to securely connect the base (1) and the top cover (2).

3. The waterproof proximity switch according to claim 2, characterized in that: The lower end of the screw (5) is screwed into the external oil cylinder, thereby connecting the base (1) to the oil cylinder.

4. The waterproof proximity switch according to claim 1, characterized in that: The connection hole on the top cover (2) is a through hole arranged in a vertical direction, and the connection hole on the base (1) is a blind hole arranged in a vertical direction. The screw (5) passes through the connection hole of the top cover (2) and is screwed into the connection hole on the base (1) to securely connect the base (1) and the top cover (2).

5. The waterproof proximity switch according to claim 4, characterized in that: The base (1) is also provided with a mounting through hole, in which a screw (5) is installed so as to connect the base (1) to the oil cylinder.

6. The waterproof proximity switch according to any one of claims 1 to 5, characterized in that: The connection holes are evenly distributed along the circle where the centers of the base (1) and the top cover (2) are located.

7. The waterproof proximity switch according to claim 6, characterized in that: The base (1) is provided with a mounting cavity (11) in the middle, the top cover (2) has a connecting seat (22) at the lower end, the top cover (2) is connected to the base (1) so that the connecting seat (22) fits into the mounting cavity (11), and the top cover (2) is also provided with a straight-through connector (4) connected to the wire outlet (21).

8. The waterproof proximity switch according to claim 7, characterized in that: A sealing ring is embedded in the connection seat (22), and the sealing ring seals between the connection seat (22) and the installation cavity (11).

9. The waterproof proximity switch according to claim 8, characterized in that: A sealing ring is embedded in the lower end of the base (1), and the sealing ring seals between the base (1) and the oil cylinder.

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