Oil-proof proximity switch

Abstract

The utility model provides an oil-proof proximity switch, which relates to the field of proximity switches and comprises a proximity switch body, threads are arranged on the surface of the proximity switch body, connecting bolts are arranged on the surfaces of the threads, a top protective sleeve and a bottom protective sleeve are respectively arranged on the surfaces of the connecting bolts, and extrusion rubber rings are arranged on opposite sides of the connecting bolts. The fixed protective sleeve and the bottom protective sleeve are arranged on the wrapping surface of the proximity switch main body to protect the proximity switch main body, and the proximity switch is mostly installed on the surface of a sheet-shaped structure in a clamping mode through a connecting bolt when in use, so that the proximity switch is convenient to use. When the connecting bolts drive the top protective sleeve and the bottom protective sleeve to move, the extrusion rubber rings on the surfaces of the two connecting bolts firstly make contact with the plate-shaped structure and deform, and at the moment, the two ends of the proximity switch body respectively form two sealed cavities with the plate-shaped structure as a boundary. External oil cannot penetrate through the top protective sleeve and the bottom protective sleeve to enter the interior to be in contact with the proximity switch body.

Description

Technical Field

[0001] The utility model relates to the field of proximity switches, in particular to an oil-proof proximity switch. Background Art

[0002] A proximity switch is a position switch that can be operated without direct mechanical contact with moving parts. When an object approaches the sensing surface of the switch and reaches the effective operating distance, the switch can be operated without mechanical contact or applying any pressure.

[0003] Proximity switches are suitable for various usage scenarios. Traditional proximity switches are prone to electrical short circuits, signal interference, component corrosion and other problems after contact with oily substances. In many industrial and production scenarios, the presence of oil is common and inevitable, such as cutting oil in mechanical processing, lubricating oil in automobile manufacturing, edible oil in the food industry, etc. These oily substances may penetrate into the proximity switch, affecting its performance and accuracy, and even causing failures. Utility Model Content

[0004] The purpose of the utility model is to solve the following problems existing in the prior art:

[0005] Proximity switches are suitable for various usage scenarios. Traditional proximity switches are prone to electrical short circuits, signal interference, component corrosion and other problems after contact with oily substances. In many industrial and production scenarios, the presence of oil is common and inevitable, such as cutting oil in mechanical processing, lubricating oil in automobile manufacturing, edible oil in the food industry, etc. These oily substances may penetrate into the proximity switch, affecting its performance and accuracy, and even causing failures.

[0006] In order to solve the problems existing in the prior art, the utility model provides an oil-proof proximity switch, including a proximity switch body, the surface of the proximity switch body is provided with a thread, the thread surface is provided with a connecting bolt A and a connecting bolt B, the surfaces of the connecting bolt A and the connecting bolt B are respectively provided with a top protective sleeve and a bottom protective sleeve, the connecting bolt A and the connecting bolt B are provided with an extrusion rubber ring on the opposite sides, the ends of the top protective sleeve and the bottom protective sleeve are both provided with a through hole, the inner wall of the through hole at the end of the top protective sleeve is installed with plexiglass, and the inside of the through hole at the end of the bottom protective sleeve is provided with a sealing rubber ring.

[0007] The utility model provides an oil-proof proximity switch.

[0008] Furthermore, the inner walls of the top protective sleeve and the bottom protective sleeve are both provided with grooves adapted to the threads, and the top protective sleeve and the bottom protective sleeve are arranged facing each other with a gap between them and the proximity switch body.

[0009] Furthermore, the extruded rubber ring is an annular structure made of flexible rubber.

[0010] Furthermore, the perforated inner wall at the end of the top protective sleeve is provided with two organic glasses and a rubber ring is provided between the two organic glasses.

[0011] Furthermore, the proximity switch body is divided into a sensing probe, a body and a data line, the top protective cover covers the sensing probe and half of the body, the bottom protective cover covers the data line and half of the body, wherein the data line extends to the outside along the perforated surface of the bottom protective cover.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The utility model provides protection for the proximity switch body by arranging a fixed protective cover and a bottom protective cover on the surface of the proximity switch body. When the proximity switch is in use, it is mostly installed on the surface of the sheet structure by clamping with connecting bolts. When the connecting bolts drive the top protective cover and the bottom protective cover to move, the extruded rubber rings on the surfaces of the two connecting bolts first contact with the plate structure and deform. Until the two connecting bolts can no longer rotate through the threads, the two extruded rubber rings are clamped between the plate structure and the connecting bolts and deform greatly to seal the protective cover, and the sealing rubber ring in the perforation at the end of the bottom protective cover is interference-connected with the data line part of the proximity switch body to form a seal. At this time, the two ends of the proximity switch body respectively form two sealed cavities with the plate structure as the dividing line, and the external oil cannot pass through the top protective cover and the bottom protective cover to enter the interior and contact the proximity switch body, and the detection signal emitted by the output end of the proximity switch body can pass through the organic glass to be emitted outward without blocking the normal use of the proximity switch body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall installation structure of the utility model;

[0015] Figure 2 It is a schematic cross-sectional view of the overall structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the top protective cover of the utility model;

[0017] Figure 4 This is a schematic diagram of the bottom protective cover of the utility model;

[0018] Figure numerals: 1, proximity switch body; 2, thread; 3, connecting bolt A; 4, connecting bolt B; 5, top protective cover; 6, bottom protective cover; 7, extruded rubber ring; 8, perforation; 9, organic glass; 10, sealing rubber ring. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects of the utility model easy to understand, the utility model is further described below in conjunction with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the utility model, 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 protection scope of the present invention.

[0020] The specific embodiments of the present utility model are described below in conjunction with the accompanying drawings.

[0021] Example 1

[0022] like Figure 1-4 As shown, an oil-proof proximity switch includes a proximity switch body 1, characterized in that: a thread 2 is provided on the surface of the proximity switch body 1, a connecting bolt A3 and a connecting bolt B4 are provided on the surface of the thread 2, a top protective sleeve 5 and a bottom protective sleeve 6 are provided on the surfaces of the connecting bolt A3 and the connecting bolt B4, respectively, the inner walls of the top protective sleeve 5 and the bottom protective sleeve 6 are both provided with grooves adapted to the thread 2, and the top protective sleeve 5 and the bottom protective sleeve 6 are arranged opposite to each other and a gap is left between the proximity switch body 1, and an extrusion rubber ring 7 is provided on the opposite side of the connecting bolt A3 and the connecting bolt B4, and the extrusion rubber ring 7 is made of flexible rubber The top protective cover 5 and the bottom protective cover 6 have an annular structure, and the ends of the top protective cover 5 and the bottom protective cover 6 are both provided with a through hole 8. The proximity switch body 1 is divided into a sensing probe, a main body and a data line. The top protective cover 5 covers the sensing probe and one-half of the main body, and the bottom protective cover 6 covers the data line and one-half of the main body, wherein the data line extends to the outside along the through hole 8 on the surface of the bottom protective cover 6, and an organic glass 9 is installed on the inner wall of the through hole 8 at the end of the top protective cover 5, and two organic glasses 9 are arranged on the inner wall of the through hole 8 at the end of the top protective cover 5, and a rubber ring is arranged between the two organic glasses 9, and a sealing rubber ring 10 is arranged inside the through hole 8 at the end of the bottom protective cover 6.

[0023] Working principle description: First, the proximity switch body 1 is prevented from being placed inside the plate-like structure at the desired position during use, and then the connecting bolts A3 and B4 provided with the top protective sleeve 5 and the bottom protective sleeve 6 are installed at both ends of the proximity switch body 1 through the thread 2, and at the same time, the connecting bolts A3 and B4 are gradually rotated to drive the top protective sleeve 5 and the bottom protective sleeve 6 to move, and the extruded rubber rings 7 on the surfaces of the connecting bolts A3 and the connecting bolts B4 first contact with the plate-like structure and deform, until the connecting bolts A3 and the connecting bolts B4 can no longer rotate through the thread 2, and the two extruded rubber rings 7 are clamped between the plate-like structure and the connecting bolts A3 and the connecting bolts B4 and deform greatly, and the sealing rubber ring 10 in the through hole 8 at the end of the bottom protective sleeve 6 is interference-connected with the data line part of the proximity switch body 1 to form a seal, at this time, the two ends of the proximity switch body 1 form two sealed cavities with the plate-like structure as the dividing line, and the detection signal emitted by the output end of the proximity switch body 1 can pass through the organic glass 9 and be emitted outward without blocking the normal use of the proximity switch body 1.

[0024] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An oil-proof proximity switch, comprising a proximity switch body (1), characterized in that: The surface of the proximity switch body (1) is provided with a thread (2), the surface of the thread (2) is provided with a connecting bolt A (3) and a connecting bolt B (4), the surfaces of the connecting bolt A (3) and the connecting bolt B (4) are provided with a top protective sleeve (5) and a bottom protective sleeve (6) respectively, the connecting bolt A (3) and the connecting bolt B (4) are provided with an extrusion rubber ring (7) on the opposite sides of the connecting bolt A (3) and the connecting bolt B (4), the ends of the top protective sleeve (5) and the bottom protective sleeve (6) are both provided with a through hole (8), the inner wall of the through hole (8) at the end of the top protective sleeve (5) is installed with organic glass (9), and the inside of the through hole (8) at the end of the bottom protective sleeve (6) is provided with a sealing rubber ring (10).

2. The oil-proof proximity switch according to claim 1, characterized in that: The inner walls of the top protective sleeve (5) and the bottom protective sleeve (6) are both provided with grooves adapted to the threads (2), and the top protective sleeve (5) and the bottom protective sleeve (6) are arranged facing each other with a gap between them and the proximity switch body (1).

3. The oil-proof proximity switch according to claim 1, characterized in that: The extrusion rubber ring (7) is an annular structure made of flexible rubber.

4. The oil-proof proximity switch according to claim 1, characterized in that: The inner wall of the through hole (8) located at the end of the top protective sleeve (5) is provided with two organic glasses (9), and a rubber ring is provided between the two organic glasses (9).

5. The oil-proof proximity switch according to claim 1, characterized in that: The proximity switch body (1) is divided into a sensing probe, a body and a data line, the top protective cover (5) covers the sensing probe and one half of the body, the bottom protective cover (6) covers the data line and one half of the body, wherein the data line extends to the outside along a perforation (8) on the surface of the bottom protective cover (6).

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