Inductance type oil-proof and water-proof proximity switch

By designing the inductor oil -proof type of multi -layer sealing structure, it solves the problem of increasing replacement costs caused by sealing gel coagulation, realizes the convenient and efficient sealing effect of disassembly and reducing the cost of use.

CN119341541APending Publication Date: 2025-01-21HUANGSHAN YUANPENG ELECTRONICS CO LTD
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Patent Information

Application Number
CN202411346212.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-09-26
Publication Date
2025-01-21

AI Technical Summary

Technical Problem

After use, existing inductive proximity switches cannot be separated quickly due to the solidification of the sealing gel. Usually, the entire switch needs to be replaced, which increases the cost of use.

Method used

An inductive oil-proof and waterproof proximity switch is designed. It adopts a multi-layer sealing structure, including a shell, a protective block, a sealing gasket, a mounting shell and a cover. By driving compression, the wave gap of the sealing gasket is reduced and the contact points are increased. , to achieve multi-layer sealing effect.

Benefits of technology

It realizes disassembly and maintenance while being oil-proof and waterproof, which reduces the use cost and improves the maintainability of the proximity switch.

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Abstract

The invention provides an inductance type oil-proof and water-proof proximity switch, and relates to the field of inductance type proximity switches, the inductance type oil-proof and water-proof proximity switch comprises a shell, a protection block is inserted into one end of the shell, a mounting shell is arranged at one end of the protection block and located on the inner side of the shell, and a sealing cover is arranged at the end part of the mounting shell. A sealing gasket connected with the shell is arranged on the outer side of the installation shell and the outer side of the sealing cover, a connector extending to the outer side of the shell is arranged in the middle of the sealing cover, and a plug connected to the other end of the shell in an inserted mode and connected with the sealing gasket and the sealing cover is arranged on the outer side of the connector. According to the utility model, the protective block is arranged at the end part, so that the protective block has multiple seals when being arranged at the end part, and the middle part is stacked through driving compression, so that the two sides of the joint have multiple layers, and the other end has a multi-layer sealing effect, so that the inductance type proximity switch can be disassembled, assembled and maintained while being oil-proof and water-proof, and the use cost is reduced.
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Description

Technical Field

[0001] The invention relates to the field of inductive proximity switches, and in particular to an inductive oil-proof and waterproof proximity switch. Background Art

[0002] The inductive proximity switch consists of three parts: an oscillator, a switch amplifier, and a signal trigger. The oscillator generates an alternating magnetic field. When a metal target approaches this magnetic field and reaches the sensing distance, eddy currents are generated in the metal target, causing the oscillation to decay and even stop. The changes in the oscillation and stop of the oscillator are converted into a switch signal by the subsequent signal trigger, triggering the drive control device, thereby achieving the purpose of non-contact detection.

[0003] At present, when preparing proximity switches, sealants are mostly used to fill the gaps between the oscillator, switch circuit, amplifier output circuit and the shell, and seal them inside the shell to prevent oil and water. This is a way to prepare the proximity switch. Combined with the characteristics of the sealants, oscillators, switch amplifiers and signal triggers, damage during use is common. In this case, since the sealants will solidify after use, the sealants cannot be quickly separated from the oscillators, switch amplifiers and signal triggers. Usually, the proximity switch is directly replaced and used as a whole. However, in actual situations, direct replacement will increase the cost of using the proximity switch. Therefore, an inductive proximity switch that is easy to disassemble and assemble and is oil and water resistant is proposed. Summary of the invention

[0004] The purpose of the present invention is to provide an inductive oil-proof and waterproof proximity switch to solve the common problem of damage during use. In this case, since the sealant solidifies after use, the sealant cannot be quickly separated from the oscillator, the switch amplifier and the signal trigger. Usually, the proximity switch is directly replaced as a whole. However, in actual situations, direct replacement will increase the cost of using the proximity switch. Technical problem.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] An inductive oil-proof and waterproof proximity switch, comprising a housing, a protective block is inserted at one end of the housing, a mounting housing is arranged at one end of the protective block and located inside the housing, a sealing cover is arranged at the end of the mounting housing, a sealing gasket connected to the housing is arranged on the outside of the mounting housing and the sealing cover, a joint extending to the outside of the housing is arranged in the middle of the sealing cover, and a plug inserted at the other end of the housing and connected to the sealing gasket and the sealing cover is arranged on the outside of the joint;

[0007] Wherein, the sealing gasket is a sleeve, and the position of the sealing gasket corresponds to the connection between the mounting shell and the cover;

[0008] The sealing gasket comprises two supporting sheets connected to the shell body, and a sleeve arranged between the two supporting sheets and sleeved on the outside of the mounting shell and the sealing cover.

[0009] Preferably, the support sheet and the sleeve are both made of soft material, and the cross-section of the sleeve is wavy.

[0010] Preferably, the inner side of the sealing cover has a groove, the end of the sealing cover has an insert block inserted into the inner side of the sealant I, and the inner side of the groove of the sealing cover is provided with sealant II for fixing the joint.

[0011] Preferably, the protection block comprises a protection block body arranged at the end of the shell, a mounting post arranged at the middle of the side of the protection block body and extending to the inner side of the shell, and a convex ring arranged at the edge of the side of the protection block body for fixing the protection block body to the end of the shell;

[0012] The convex ring has two steps, and threads are arranged on the side surfaces of the two steps of the convex ring, and one step of the convex ring is connected to the housing;

[0013] A sealant I is arranged on the side of another step of the convex ring, and the sealant I is located in the gap between the protective block and the shell.

[0014] Preferably, the shell includes a shell body, a fixing groove, a mounting section, and a sealing section arranged on the inner side of the shell body, and the fixing groove, the mounting section, and the sealing section are arranged on the inner side of the shell body in sequence from left to right.

[0015] Preferably, a threaded groove is provided at one end of the mounting column, a threaded connector is provided at one end of the mounting shell, and the mounting shell is connected to the threaded groove of the protective block body and fixed to the inner side of the shell through the threaded connector.

[0016] Preferably, a groove is provided at one end of the plug, and the groove of the plug is wrapped around the outer side of the sealing cover.

[0017] Preferably, threads are provided on the outer sides of both ends of the plug, the thread length of one end of the plug is smaller than that of the other end of the plug, and the thread is arranged away from the end of the plug, and a thread groove adapted to the thread at one end of the plug is provided on the inner side of the other end of the shell.

[0018] Preferably, the cross-sectional shape of the fixing groove is U-shaped, the fixing groove is wrapped around the outside of two steps of the convex ring, and the inner side of the fixing groove has a thread groove adapted to a step of the convex ring.

[0019] The beneficial effects of the present invention are:

[0020] The present invention uses the shape of and to enable the protective block to have multiple seals when installed at the end. At the same time, by driving compression, the middle part of is stacked, so that both sides of the joint of and have multiple layers, and the other end has a multi-layer sealing effect, so that the inductive proximity switch can be disassembled, assembled and repaired while being oil-proof and waterproof, thereby reducing the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the front part of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the rear part of the overall structure of the present invention;

[0023] Figure 3 It is a schematic cross-sectional view of the housing of the present invention;

[0024] Figure 4 It is a cross-sectional schematic diagram of one end of the housing of the present invention;

[0025] Figure 5 It is a cross-sectional schematic diagram of the other end of the housing of the present invention after the plug is removed;

[0026] Figure 6 It is a cross-sectional schematic diagram of the other end of the housing of the present invention with the sealing gasket removed;

[0027] Figure 7 It is a cross-sectional schematic diagram of the connection between the mounting shell and the cover of the present invention;

[0028] Figure 8 It is a schematic cross-sectional view of the housing structure of the present invention;

[0029] Fig. 9 It is a schematic cross-sectional view of the sealing gasket structure of the present invention;

[0030] Fig.10 It is a schematic cross-sectional view of the protection block structure of the present invention;

[0031] Figure numerals: 1. Shell; 11. Shell body; 12. Fixing groove; 13. Sealing section; 14. Mounting section; 2. Plug; 3. Protective block; 31. Protective block body; 32. Mounting column; 33. Convex ring; 4. Joint; 5. Sealing gasket; 51. Support plate; 52. Sleeve; 6. Mounting shell; 7. Sealant I; 8. Cover; 9. Sealant II. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0033] The specific embodiments of the present invention are described below with reference to the accompanying drawings.

[0034] Example 1

[0035] An inductive oil-proof and waterproof proximity switch, comprising a housing 1, a protective block 3 is inserted at one end of the housing 1, a mounting shell 6 is arranged at one end of the protective block 3 and located inside the housing 1, a cover 8 is arranged at the end of the mounting shell 6, a sealing gasket 5 connected to the housing 1 is arranged on the outside of the mounting shell 6 and the cover 8, a joint 4 extending to the outside of the housing 1 is arranged in the middle of the cover 8, a plug 2 is arranged on the outside of the joint 4 and plugged at the other end of the housing 1 and connected to the sealing gasket 5 and the cover 8, wherein the joint 4 is a quick connector in the prior art, and therefore, it is only shown in the figure and is not described;

[0036] The sealing gasket 5 is a sleeve, and the position of the sealing gasket 5 corresponds to the connection between the mounting shell 6 and the cover 8;

[0037] The sealing gasket 5 includes two support sheets 51 connected to the shell 1, and a sleeve 52 arranged between the two support sheets 51 and sleeved on the outside of the mounting shell 6 and the cover 8. It should be noted that the support sheets 51 and the sleeve 52 are both made of soft materials, and the cross-section of the sleeve 52 is wavy.

[0038] For details, please refer to Figure 1-10In this example, an inductive proximity switch which is easy to disassemble and assemble and is oil-proof and waterproof is proposed. The proximity switch is combined with a housing 1, a plug 2, a protective block 3, a sealing gasket 5, a mounting shell 6, a cover 8 and other components. The mounting shell 6 is intended to install and place a circuit consisting of a signal trigger, an oscillation circuit, and a switch amplifier, and connect it to a connector 4 sealed and fixed on the cover 8 by a sealant II 9, that is, after the connector 4 is connected to the circuit, the circuit inside the mounting shell 6 can work, and at the same time, the mounting shell 6 is connected to the protective block 3 through a thread, and a part of the sealant I7 is poured into the inner side of the fixing groove 12, and the protective block 3 is connected to the housing 1, so that there are multiple sealed connections between the protective block 3 and the housing 1. Effect, at the same time, the sealing gasket 5 is installed to the inner side of the shell 1 and the sealing gasket 5 is sleeved on the outer side of the mounting shell 6 and the cover 8, and the plug 2 is installed on the shell 1, so that when the plug 2 moves toward the inner thread, the plug 2 drives the cover 8 to be compressed, so that the wave gap of the sealing gasket 5 is reduced, and the contact points with the outer side of the mounting shell 6 and the cover 8 are increased, so that the outer side of the mounting shell 6 and the cover 8 have a multi-layer sealing effect, and at the same time, the connector 4 is plugged into the inner side of the plug 2 and adapted to the end position of the plug 2, and the wire is connected to the thread of the plug 2 through a quick connector to make the proximity switch work, thereby avoiding the erosion of the circuit inside the mounting shell 6 by oil and water. At the same time, the proximity switch can be disassembled for maintenance to reduce the cost of use.

[0039] The specific structures of the housing 1, the plug 2, the protective block 3 and the cover 8 involved in this example are described below:

[0040] The inner side of the sealing cover 8 is provided with a groove, and the end of the sealing cover 8 is provided with an inserting block inserted into the inner side of the sealing glue I7. The inner side of the groove of the sealing cover 8 is provided with a sealing glue II9 for fixing the joint 4.

[0041] The protection block 3 includes a protection block body 31 disposed at the end of the housing 1, a mounting post 32 disposed in the middle of the side of the protection block body 31 and extending to the inner side of the housing 1, and a convex ring 33 disposed at the side edge of the protection block body 31 for fixing the protection block body 31 to the end of the housing 1;

[0042] The convex ring 33 has two steps, and threads are arranged on the side surfaces of the two steps of the convex ring 33. One step of the convex ring 33 is connected to the housing 1. One end of the mounting column 32 is provided with a thread groove, and one end of the mounting shell 6 is provided with a threaded connector. The mounting shell 6 is connected to the thread groove of the protective block body 31 through the threaded connector and fixed to the inner side of the housing 1.

[0043] A sealant I7 is disposed on the side of another step of the convex ring 33 . The sealant I7 is located in the gap between the protective block 3 and the shell 1 , and the sealant I7 covers the gap between the protective block 3 and the shell 1 , so that the protective block 3 and the shell 1 are sealed and connected.

[0044] The shell 1 includes a shell body 11, a fixing groove 12, a mounting section 14, and a sealing section 13 arranged on the inner side of the shell body 11, and the fixing groove 12, the mounting section 14, and the sealing section 13 are arranged on the inner side of the shell body 11 from left to right, wherein the cross-sectional shape of the fixing groove 12 is U-shaped, the fixing groove 12 is wrapped around the outer sides of the two steps of the convex ring 33, and the inner side of the fixing groove 12 has a threaded groove adapted to a step of the convex ring 33, the diameter of the sealing section 13 is larger than the diameter of the mounting section 14, one end of the sealing section 13 has a mounting surface, one end of the sealing gasket 5 is located on the mounting surface of the sealing section 13, and is used to limit the position of the sealing gasket 5 on the inner side of the shell 1.

[0045] A groove is provided at one end of the plug 2, and the groove of the plug 2 is wrapped around the outer side of the cover 8, wherein the size of the groove of the plug 2 is larger than the size of the cover 8, and the depth of the groove of the plug 2 is smaller than the length of the cover 8. Therefore, when the plug 2 drives the sealing gasket 5 to contract, the sealing gasket 5 does not appear to be only connected to the mounting shell 6, but the surfaces at both ends of the sealing gasket 5 are respectively superimposed on the outer sides of the mounting shell 6 and the cover 8, so that a sealing layer is formed between each two waves of the sealing gasket 5, so that the connection sealing shape between the mounting shell 6 and the cover 8 is higher.

[0046] Threads are provided on the outer sides of both ends of the plug 2. The thread length of one end of the plug 2 is smaller than that of one end of the plug 2, and the thread is arranged away from the end of the plug 2. A thread groove adapted to the thread at one end of the plug 2 is provided on the inner side of the other end of the shell 1, so that the end of the plug 2 is in contact with the sealing gasket 5 when the plug 2 is threadedly connected to the inner side of the shell 1, and when the plug 2 is fixed on the shell 1, the sealing gasket 5 is compressed by the plug 2.

[0047] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An inductive oil-proof and waterproof proximity switch, characterized in that: The invention comprises a shell (1), a protective block (3) is inserted into one end of the shell (1), a mounting shell (6) is arranged at one end of the protective block (3) and located inside the shell (1), a sealing cover (8) is arranged at the end of the mounting shell (6), a sealing gasket (5) connected to the shell (1) is arranged on the outside of the mounting shell (6) and the sealing cover (8), a joint (4) extending to the outside of the shell (1) is arranged in the middle of the sealing cover (8), and a plug (2) is arranged on the outside of the joint (4) and is inserted into the other end of the shell (1) and connected to the sealing gasket (5) and the sealing cover (8); Wherein, the sealing gasket (5) is a sleeve, and the position of the sealing gasket (5) corresponds to the connection between the mounting shell (6) and the cover (8); The sealing gasket (5) comprises two supporting sheets (51) connected to the housing (1), and a sleeve (52) arranged between the two supporting sheets (51) and sleeved on the outside of the mounting shell (6) and the sealing cover (8).

2. The inductive oil-proof and waterproof proximity switch according to claim 1, characterized in that: The support sheet (51) and the sleeve (52) are both made of soft material, and the cross section of the sleeve (52) is wavy.

3. The inductive oil-proof and waterproof proximity switch according to claim 1, characterized in that: The inner side of the sealing cover (8) has a groove, the end of the sealing cover (8) has an insert block inserted into the inner side of the sealing glue I (7), and the inner side of the groove of the sealing cover (8) is provided with sealing glue II (9) for fixing the joint (4).

4. The inductive oil-proof and waterproof proximity switch according to claim 1, characterized in that: The protection block (3) comprises a protection block body (31) arranged at the end of the shell (1), a mounting post (32) arranged at the middle of the side of the protection block body (31) and extending to the inside of the shell (1), and a convex ring (33) arranged at the side edge of the protection block body (31) for fixing the protection block body (31) to the end of the shell (1); The convex ring (33) has two steps, and threads are arranged on the side surfaces of the two steps of the convex ring (33), and one step of the convex ring (33) is connected to the housing (1); A sealant I (7) is arranged on the side of another step of the convex ring (33), and the sealant I (7) is located in the gap between the protective block (3) and the housing (1).

5. The inductive oil-proof and waterproof proximity switch according to claim 4, characterized in that: The shell (1) comprises a shell body (11), a fixing groove (12), a mounting section (14), and a sealing section (13) arranged on the inner side of the shell body (11); the fixing groove (12), the mounting section (14), and the sealing section (13) are arranged in sequence from left to right on the inner side of the shell body (11).

6. The inductive oil-proof and waterproof proximity switch according to claim 4, characterized in that: One end of the mounting column (32) is provided with a threaded groove, and one end of the mounting shell (6) is provided with a threaded connector. The mounting shell (6) is connected to the threaded groove of the protective block body (31) via the threaded connector and is fixed to the inner side of the housing (1).

7. The inductive oil-proof and waterproof proximity switch according to claim 1, characterized in that: One end of the plug (2) is provided with a groove, and the groove of the plug (2) is wrapped around the outside of the sealing cover (8).

8. The inductive oil-proof and waterproof proximity switch according to claim 1, characterized in that: The outer sides of both ends of the plug (2) are provided with threads, the length of the thread at one end of the plug (2) is less than the length of the other end of the plug (2), and the thread is arranged away from the end of the plug (2), and the inner side of the other end of the housing (1) is provided with a thread groove adapted to the thread at one end of the plug (2).

9. The inductive oil-proof and waterproof proximity switch according to claim 5, characterized in that: The cross-sectional shape of the fixing groove (12) is U-shaped, the fixing groove (12) is wrapped around the outside of two steps of the convex ring (33), and the inside of the fixing groove (12) has a thread groove adapted to one step of the convex ring (33).