Proximity switch with rubber ring sealing structure

Abstract

A proximity switch with a rubber ring sealing structure comprises a base, a positioning seat arranged on the base, a plurality of rubber rings arranged on the positioning seat, a cable arranged on the positioning seat and the rubber rings in a penetrating mode and a control circuit board arranged in the base, the cable is connected with the control circuit board, an installation hole is formed in the positioning seat, and the rubber rings are arranged in the installation hole. A plurality of assembling grooves are formed in the hole wall of the mounting hole, the assembling grooves are distributed around the center axis of the mounting hole, the rubber rings are arranged in the assembling grooves, the cable penetrates through the mounting hole and the rubber rings at the same time, the rubber rings extrude the cable and the positioning seat in the circumferential direction, and therefore the gap between the cable and the positioning seat is sealed. According to the proximity switch with the rubber ring sealing structure, the sealing performance between the cable and the rubber ring is effectively improved, external sundries are prevented from flowing into the proximity switch from a gap between the cable and the rubber ring, and the service life of the proximity switch is further prolonged.

Description

Technical Field

[0001] The utility model relates to a sensor, in particular to a proximity switch with a rubber ring sealing structure. Background Art

[0002] A proximity switch usually includes a cable for transmitting signals. The cable passes through a perforation on the proximity switch housing and is connected to a circuit board inside the proximity switch. However, for existing proximity switches, there is a gap between the cable and the perforation. After long-term use, the proximity switch is affected by wear, deformation, shrinkage, etc., and the gap between the cable and the perforation is further increased. When used in harsh environments, the proximity switch is easily infiltrated with oil and water, causing the proximity switch to fail to work normally, causing trouble to the user. Utility Model Content

[0003] Based on this, it is necessary to provide a proximity switch with a rubber ring sealing structure to address the deficiencies in the prior art.

[0004] The technical solution of the utility model is: a proximity switch with a rubber ring sealing structure, comprising a base, a positioning seat installed on the base, a plurality of rubber rings installed on the positioning seat, cables passing through the positioning seat and the rubber rings, and a control circuit board installed inside the base, wherein the cables are connected to the control circuit board, the positioning seat is provided with a mounting hole, the hole wall of the mounting hole is provided with a plurality of assembly grooves, the assembly grooves are distributed around the central axis of the mounting hole, the rubber ring is installed in the assembly groove, the cable passes through the mounting hole and the rubber ring at the same time, and the rubber ring squeezes the cable and the positioning seat in the circumferential direction, thereby sealing the gap between the cable and the positioning seat.

[0005] In one embodiment, the base includes a bottom plate, a plurality of side plates and a functional plate, the side plates and the functional plate are connected to the bottom plate, the plurality of side plates and the functional plate are distributed in a "mouth" shape, the side plates and the functional plate form an inner groove, and the positioning seat is installed on the functional plate.

[0006] In one embodiment, a first card slot is provided on a side of the function board close to the inner slot, a second card slot is provided on a side of the function board away from the inner slot, and a third card slot is further provided on the function board, the third card slot connects the first card slot and the second card slot, the positioning seat comprises a first card plate, a card portion, and a connecting portion connecting the first card plate and the card portion, a second card plate is provided at one end of the card portion close to the connecting portion, the first card plate, the connecting portion and the second card plate on the positioning seat are respectively installed in the first card slot, the third card slot and the second card slot, and the first card plate and the second card plate are clamped at the notch of the third card slot in the front-to-back direction.

[0007] In one embodiment, the first card slot and the second card slot are symmetrically arranged along the center plane in the thickness direction of the functional board.

[0008] In one embodiment, the first card slot, the second card slot and the third card slot all extend to the upper end surface of the function board.

[0009] In one embodiment, the spaces within the first card slot, the second card slot, and the third card slot are all U-shaped, and the horizontal width and vertical depth of the first card slot are greater than those of the third card slot, and the horizontal width and vertical depth of the second card slot are greater than those of the third card slot.

[0010] In one embodiment, the mounting hole passes through the first positioning plate, the connecting portion and the positioning portion simultaneously in a horizontal direction.

[0011] In one embodiment, the rubber ring is arranged in a ring shape as a whole.

[0012] The beneficial effect of the proximity switch with a rubber ring sealing structure of the utility model is that: by arranging a mounting hole on the positioning seat, a plurality of assembly grooves are provided on the hole wall of the mounting hole, the rubber ring is installed in the assembly groove, the cable passes through the mounting hole and the rubber ring at the same time, and the rubber ring squeezes the cable and the positioning seat in the circumferential direction, thereby sealing the gap between the cable and the positioning seat, effectively improving the sealing between the cable and the rubber ring, preventing external debris from flowing into the interior of the proximity switch from the gap between the cable and the rubber ring, and thus improving the service life of the proximity switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of a proximity switch with a rubber ring sealing structure of the utility model;

[0014] Figure 2 , Figure 3 for Figure 1 Exploded views of the proximity switch with a rubber ring sealing structure at different angles;

[0015] Figure 4 for Figure 1 A cross-sectional view of a positioning seat of a proximity switch having a rubber ring sealing structure is shown. DETAILED DESCRIPTION

[0016] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0017] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0018] In addition, the terms "first" and "second" are used for descriptive purposes only and should not 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" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0019] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0021] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0022] See also Figures 1 to 4 The utility model provides a proximity switch with a rubber ring sealing structure, including a base 10, a positioning seat 20 installed on the base 10, a plurality of rubber rings 40 installed on the positioning seat 20, a cable 30 passing through the positioning seat 20 and the rubber ring 40, and a control circuit board installed inside the base 10, wherein the cable 30 is connected to the control circuit board, and the rubber ring 40 squeezes the cable 30 and the positioning seat 20 in a circumferential direction, thereby sealing the gap between the cable 30 and the positioning seat 20.

[0023] The base 10 includes a bottom plate 11, a plurality of side plates 12 and a function plate 13, the side plates 12 and the function plate 13 are connected to the bottom plate 11, the plurality of side plates 12 and the function plate 13 are distributed in a "mouth" shape, the side plates 12 and the function plate 13 form an inner groove 14, and the positioning seat 20 is installed on the function plate 13.

[0024] A first card slot 15 is provided on the side of the function board 13 close to the inner slot 14, and a second card slot 16 is provided on the side of the function board 13 away from the inner slot 14. The first card slot 15 and the second card slot 16 are symmetrically arranged along the center plane of the thickness direction of the function board 13. A third card slot 17 is also provided on the function board 13, and the third card slot 17 connects the first card slot 15 and the second card slot 16, and the first card slot 15, the second card slot 16 and the third card slot 17 all extend to the upper end surface of the function board 13.

[0025] In this embodiment, the spaces within the first card slot 15, the second card slot 16 and the third card slot 17 are all U-shaped, and the horizontal width and vertical depth of the first card slot 15 are greater than those of the third card slot 17, and the horizontal width and vertical depth of the second card slot 16 are greater than those of the third card slot 17.

[0026] The positioning seat 20 includes a first locking plate 21, a locking portion 22, and a connecting portion 23 connecting the first locking plate 21 and the locking portion 22. The locking portion 22 is provided with a second locking plate 221 at one end of the connecting portion 23. The shapes of the first locking plate 21, the second locking plate 221 and the connecting portion 23 correspond to the first slot 15, the second slot 16 and the third slot 17 respectively.

[0027] The positioning seat 20 is provided with a mounting hole 24 , which passes through the first positioning plate 21 , the connecting portion 23 and the positioning portion 22 in a horizontal direction. A plurality of assembly grooves 25 are provided on the hole wall of the mounting hole 24 , and the assembly grooves 25 are distributed around the central axis of the mounting hole 24 .

[0028] The rubber ring 40 is arranged in a ring shape as a whole, and has a certain shrinkage elasticity. The rubber ring 40 is made of elastic material, such as silicone, rubber, etc.

[0029] During assembly, the positioning seat 20 is installed on the base 10, and the first clamping plate 21, the connecting part 23, and the second clamping plate 221 on the positioning seat 20 are respectively installed in the first clamping slot 15, the third clamping slot 17 and the second clamping slot 16, and the first clamping plate 21 and the second clamping plate 221 are clamped at the notch of the third clamping slot 17 in the front-to-back direction.

[0030] The rubber ring 40 is installed on the assembly groove 25 of the positioning seat 20, and in the initial state (i.e., when the cable 30 is not installed), the rubber ring 40 extends from the assembly groove 25. When the cable 30 is installed, the cable 30 passes through the installation hole 24 and the rubber ring 40 at the same time, and the circumferential surface of the cable 30 squeezes the rubber ring 40, so that the rubber ring 40 is tightly fitted with the cable 30 and the groove wall of the assembly groove 25.

[0031] The beneficial effect of the proximity switch with the rubber ring sealing structure of the utility model is that: by setting the mounting hole 24 on the positioning seat 20, a plurality of assembly grooves 25 are provided on the hole wall of the mounting hole 24, the rubber ring 40 is installed in the assembly groove 25, and the cable 30 passes through the mounting hole 24 and the rubber ring 40 at the same time. The rubber ring 40 squeezes the cable 30 and the positioning seat 20 in the circumferential direction, thereby sealing the gap between the cable 30 and the positioning seat 20, effectively improving the sealing between the cable 30 and the rubber ring 40, preventing external debris from flowing into the interior of the proximity switch from the gap between the cable 30 and the rubber ring 40, and thus improving the service life of the proximity switch.

[0032] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0033] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A proximity switch with a rubber ring sealing structure, characterized in that: It includes a base, a positioning seat installed on the base, a plurality of rubber rings installed on the positioning seat, cables passing through the positioning seat and the rubber rings, and a control circuit board installed inside the base. The cables are connected to the control circuit board. The positioning seat is provided with a mounting hole. The hole wall of the mounting hole is provided with a plurality of assembly grooves. The assembly grooves are distributed around the central axis of the mounting hole. The rubber ring is installed in the assembly groove. The cable passes through the mounting hole and the rubber ring at the same time. The rubber ring squeezes the cable and the positioning seat in the circumferential direction, thereby sealing the gap between the cable and the positioning seat.

2. The proximity switch with a rubber ring sealing structure according to claim 1, characterized in that: The base includes a bottom plate, a plurality of side plates and a functional plate, the side plates and the functional plate are connected to the bottom plate, the plurality of side plates and the functional plate are distributed in a "mouth" shape, the side plates and the functional plate are combined to form an inner groove, and the positioning seat is installed on the functional plate.

3. The proximity switch with a rubber ring sealing structure according to claim 2, characterized in that: A first card slot is provided on a side of the function board close to the inner slot, a second card slot is provided on a side of the function board away from the inner slot, a third card slot is also provided on the function board, the third card slot is connected to the first card slot and the second card slot, the positioning seat comprises a first card plate, a card portion, and a connecting portion connecting the first card plate and the card portion, a second card plate is provided at one end of the card portion close to the connecting portion, the first card plate, the connecting portion and the second card plate on the positioning seat are respectively installed in the first card slot, the third card slot and the second card slot, and the first card plate and the second card plate are clamped at the notch of the third card slot in the front-back direction.

4. The proximity switch with a rubber ring sealing structure according to claim 3, characterized in that: The first clamping slot and the second clamping slot are symmetrically arranged along a center plane in a thickness direction of the functional board.

5. The proximity switch with a rubber ring sealing structure according to claim 3, characterized in that: The first card slot, the second card slot and the third card slot all extend to the upper end surface of the function board.

6. The proximity switch with a rubber ring sealing structure according to claim 3, characterized in that: The spaces within the first card slot, the second card slot and the third card slot are all U-shaped, and the horizontal width and vertical depth of the first card slot are greater than those of the third card slot, and the horizontal width and vertical depth of the second card slot are greater than those of the third card slot.

7. The proximity switch with a rubber ring sealing structure according to claim 3, characterized in that: The mounting hole passes through the first clamping plate, the connecting portion and the clamping portion simultaneously in a horizontal direction.

8. The proximity switch with a rubber ring sealing structure according to claim 1, characterized in that: The rubber ring is arranged in a ring shape as a whole.

Images