Non-contact proximity switch and valve position indication system

Abstract

The present invention provides a non-contact proximity switch and valve position indication system, which relate to the field of switch control technology. It is used to solve the problem that when there is vibration in the working environment of the existing proximity switch, the vibration of the magnetic part may cause the proximity switch to malfunction and generate a false signal. The non-contact proximity switch includes a first static contact and a second static contact arranged oppositely and at intervals, and a first moving contact and a second moving contact are arranged at intervals on the first side of the rotating member; a limit block is arranged between the first static contact and the second static contact in the relative direction of the first static contact and the second static contact, and a driving device drives the elastic component to rotate to drive the rotating member to rotate around the limit block, so that the first moving contact point contacts the first static contact point, or the second moving contact point contacts the second static contact point. The driving device drives the elastic component to rotate to drive the rotating member to rotate around the limit block, and the linear motion of the non-contact proximity switch is changed into rotational motion, thereby enhancing the vibration resistance of the non-contact proximity switch.

Description

Technical Field

[0001] The present invention relates to the technical field of switch control, and in particular to a non-contact proximity switch and a valve position indicating system. Background Art

[0002] A non-contact proximity switch is a position switch that can output a switch signal without contacting external components. When the distance between the target and the sensing surface of the switch is less than or greater than the action threshold, the proximity switch changes state and outputs a switch signal.

[0003] Existing non-contact proximity switches mostly use magnetic parts to directly drive switch contacts, and the magnetic parts and contacts are connected by rigidity.

[0004] When there is vibration in the working environment, for example, when the proximity switch is installed in a high-vibration environment such as a pipeline, the vibration of the magnetic part may cause the proximity switch to malfunction and generate a false signal. Summary of the invention

[0005] In view of the above problems, an embodiment of the present invention provides a non-contact proximity switch, which changes the rigid contact of the switch contacts into elastic contact, thereby avoiding malfunction of the contacts of the non-contact proximity switch in a vibration environment and improving stability; the linear motion of the non-contact proximity switch is changed into rotational motion, thereby enhancing the vibration resistance of the non-contact proximity switch.

[0006] In order to achieve the above purpose, the embodiment of the present invention provides the following technical solutions:

[0007] A first aspect of an embodiment of the present invention provides a non-contact proximity switch.

[0008] A non-contact proximity switch, comprising: a first static contact and a second static contact arranged opposite to and at intervals; a limit block, located between the first static contact and the second static contact in the relative direction of the first static contact and the second static contact; an elastic component, comprising a mounting seat and an elastic member connected to the mounting seat; a rotating member, a first side of the rotating member is located between the first static contact and the second static contact, and a first moving contact and a second moving contact are arranged at intervals on the first side of the rotating member, a second side of the rotating member opposite to the first side is connected to the limit block and can rotate relative to the limit block, a connecting portion is provided on the rotating member, and the connecting portion is connected to the elastic member; a driving device, driving the elastic component to rotate, so as to drive the rotating member to rotate around the limit block, so that the first moving contact point contacts the first static contact point, or the second moving contact point contacts the second static contact point.

[0009] Compared with the prior art, the non-contact proximity switch provided by the embodiment of the present invention has the following advantages:

[0010] The non-contact proximity switch includes a first static contact and a second static contact that are arranged oppositely and at intervals, and a first moving contact and a second moving contact are arranged at intervals on the first side of the rotating member; a limit block is arranged between the first static contact and the second static contact in the relative direction of the first static contact and the second static contact, and a driving device drives the elastic component to rotate to drive the rotating member to rotate around the limit block, so that the first moving contact point contacts the first static contact point, or the second moving contact point contacts the second static contact point. The elastic force of the elastic component can press the first moving contact and the first static contact or the second moving contact and the second static contact tightly, so as to avoid contact malfunction of the non-contact proximity switch in a vibration environment and improve stability. The driving device drives the elastic component to rotate to drive the rotating member to rotate around the limit block, so as to change the linear motion of the non-contact proximity switch into rotational motion, and enhance the vibration resistance of the non-contact proximity switch.

[0011] As an improvement of the contactless proximity switch of an embodiment of the present invention, the rotating member includes a substrate and a first protrusion arranged on the first side of the substrate; the first protrusion is provided with the first moving contact and the second moving contact spaced apart on a side away from the substrate; the connecting portion includes a second protrusion arranged on one side of the substrate and adjacent to the first protrusion.

[0012] As a further improvement of the contactless proximity switch of an embodiment of the present invention, a sharp angle structure is provided on the second side of the substrate, a V-shaped groove is provided on the side of the limit block opposite to the sharp angle structure, and the sharp angle structure abuts against the bottom wall of the groove.

[0013] As a further improvement of the non-contact proximity switch of an embodiment of the present invention, a receiving groove is provided at one end of the mounting seat, a partial structure of the elastic member is located in the receiving groove, one end of the elastic member is fixed to the bottom wall of the receiving groove, and the other end of the elastic member is clamped with the second protrusion of the rotating member.

[0014] As a further improvement of the non-contact proximity switch of an embodiment of the present invention, the driving device includes a movable magnetic part, a fixed magnetic part, a first connecting rod and a second connecting rod, one end of the first connecting rod is rotatably connected to the first end of the second connecting rod, and the other end of the first connecting rod is provided with a mounting structure for mounting the movable magnetic part, the fixed magnetic part is arranged in the extension direction of the first connecting rod, and the second end of the second connecting rod is rotatably connected to the mounting seat.

[0015] As a further improvement of the non-contact proximity switch of an embodiment of the present invention, the mounting base is L-shaped, including a first part and a second part that are connected, and a fixed axis is arranged at the intersection of the first part and the second part, and the driving device drives the mounting base to rotate around the fixed axis, one end of the mounting base is rotatably connected to the second connecting rod, and the other end of the mounting base is connected to the elastic member.

[0016] As a further improvement of the contactless proximity switch of an embodiment of the present invention, the second connecting rod includes a connected straight first section and an arc-shaped second section, one end of the straight first section is connected to the first connecting rod, and one end of the arc-shaped second section is connected to the mounting base.

[0017] As a further improvement of the contactless proximity switch of an embodiment of the present invention, the mounting structure of the first connecting rod includes a mounting groove arranged at the other end of the first connecting rod, and the movable magnetic member is arranged in the mounting groove and moves along a specific direction.

[0018] As a further improvement of the non-contact proximity switch of an embodiment of the present invention, the non-contact switch includes a shell, the shell includes a closed end and an open end, the shell includes an annular base arranged at the open end of the shell, a first static contact seat and a second static contact seat are relatively arranged on one side of the base, the first static contact seat includes a connected first mounting block and a first elastic arm, the first mounting block is fixed to one side of the base, and the first static contact is provided at the end of the free end of the first elastic arm; the second static contact seat includes a connected second mounting block and a second elastic arm, the second mounting block is fixed to one side of the base, and the second static contact is provided at the end of the free end of the second elastic arm.

[0019] A second aspect of an embodiment of the present invention provides a valve position indicating system.

[0020] A valve position indicating system comprises any one of the non-contact proximity switches and a target arranged on a side of the non-contact proximity switch away from the driving device, wherein the target is used to attract a movable magnetic part of the non-contact proximity switch.

[0021] Compared with the prior art, the valve position indication system provided by the embodiment of the present invention has the following advantages:

[0022] The valve position indication system adopts the above-mentioned non-contact proximity switch to avoid malfunction of the contacts of the valve position indication system in a vibration environment, thereby enhancing the anti-vibration performance and improving the stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a structural schematic diagram of the related art proximity switch in the open state;

[0025] Figure 2 It is a structural schematic diagram of the closed state of the proximity switch in the related technology;

[0026] Figure 3 A schematic diagram of the structure of a non-contact proximity switch provided by an embodiment of the present invention;

[0027] Figure 4 A schematic diagram of the structure of a limit block provided in an embodiment of the present invention;

[0028] Figure 5 A schematic diagram of the structure of a rotating member provided in an embodiment of the present invention;

[0029] Figure 6 A cross-sectional view of a rotating member along the AA direction provided by an embodiment of the present invention;

[0030] Figure 7 A schematic diagram of the structure of a valve position indication system provided in an embodiment of the present invention.

[0031] Description of reference numerals:

[0032] 100: valve position indicating system; 101: non-contact proximity switch; 102: target; 1: rotating member; 11: first protrusion; 111: first moving contact; 112: second moving contact; 12: second protrusion; 13: pointed structure; 2: base; 21: first static contact; 22: second static contact; 23: first static contact seat; 24: second static contact seat; 25: first contact pin; 26: second contact pin; 27: bolt; 28: elastic sleeve; 3: limit block; 31: V-shaped groove; 4: elastic component; 41: mounting seat; 42: elastic member; 43: fixed shaft; 5: driving device; 51: first connecting rod; 52: second connecting rod; 53: movable magnetic member; 54: fixed magnetic member; 6: clamping nut; 7: housing; 71: first support member; 72: second support member; 9: moving contact arm. DETAILED DESCRIPTION

[0033] Figure 1 This is a structural schematic diagram of the related art proximity switch in the open state; Figure 2 This is a schematic diagram of the structure of the related art proximity switch in the closed state. Figure 1 and Figure 2 As shown, the existing proximity switch includes a housing, a first static contact 21 and a second static contact 22 fixedly arranged on the housing, and a moving contact arm 9. The moving contact arm 9 is located between the first static contact 21 and the second static contact 22. Two moving contacts are respectively arranged on the left and right sides of the free end of the moving contact arm 9. The moving contact arm 9 contacts the first static contact 21 when it moves to the right end point, and contacts the second static contact 22 when it moves to the left end point. However, when the proximity switch is in a vibrating environment, the moving contact arm 9 shakes with the vibration, causing the moving and static contacts to switch continuously, and the proximity switch is prone to contact malfunction.

[0034] In view of the above technical problems, the present invention proposes a non-contact proximity switch and a valve position indication system. The non-contact proximity switch includes a first static contact and a second static contact that are arranged oppositely and at intervals, and a first moving contact and a second moving contact are arranged at intervals on the first side of a rotating member; a limit block is arranged between the first static contact and the second static contact in the relative direction of the first static contact and the second static contact, and a driving device drives the elastic component to rotate to drive the rotating member to rotate around the limit block, so that the first moving contact point contacts the first static contact point, or the second moving contact point contacts the second static contact point. The elastic force of the elastic component can press the first moving contact and the first static contact or the second moving contact and the second static contact tightly, so as to avoid contact malfunction of the non-contact proximity switch in a vibration environment and improve stability. The driving device drives the elastic component to rotate to drive the rotating member to rotate around the limit block, so as to change the linear motion of the non-contact proximity switch into rotational motion, thereby enhancing the anti-vibration performance of the non-contact proximity switch.

[0035] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0036] The directional words such as up, down, left and right involved in the embodiments of the present invention are defined as a reference when the non-contact proximity switch and the valve position indication system are in normal operation. The aforementioned directional words are only used for convenience of description and do not constitute any limitation on the structure.

[0037] A non-contact proximity switch and a valve position indicating system according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0038] Figure 3 A schematic diagram of the structure of a non-contact proximity switch provided by an embodiment of the present invention, see Figure 3A non-contact proximity switch 101 includes a limit block 3, an elastic component 4, a rotating member 1, a driving device 5, and a first static contact 21 and a second static contact 22 that are arranged oppositely and spaced apart. The elastic component 4 includes a mounting seat 41 and an elastic member 42 connected to the mounting seat 41. The limit block 3 is located between the first static contact 21 and the second static contact 22 in the relative direction of the first static contact 21 and the second static contact 22. The first side of the rotating member 1 is located between the first static contact 21 and the second static contact 22, and the first moving contact 111 and the second moving contact 112 are arranged at intervals on the first side of the rotating member 1. The second side of the rotating member 1 opposite to the first side is connected to the limit block 3 and can rotate relative to the limit block 3. A connecting part is provided on the rotating member 1, and the connecting part is connected to the elastic member 42; the driving device 5 drives the elastic component 4 to rotate, so as to drive the rotating member 1 to rotate around the limit block 3, so that the first moving contact 111 contacts the first static contact 21, or the second moving contact 112 contacts the second static contact 22.

[0039] The elastic force of the elastic component 4 can press the first moving contact 111 and the first static contact 21 or the second moving contact 112 and the second static contact 22 tightly, thereby preventing the non-contact proximity switch 101 from malfunctioning in a vibration environment and improving stability. The driving device 5 drives the elastic component 4 to rotate, thereby driving the rotating member 1 to rotate around the limit block 3, changing the linear motion of the non-contact proximity switch 101 into a rotational motion, thereby enhancing the anti-vibration performance of the non-contact proximity switch 101.

[0040] In order to facilitate the arrangement of the first moving contact 111 and the second moving contact 112, in an optional embodiment, Figure 5 A schematic diagram of the structure of a rotating member provided in an embodiment of the present invention; Figure 6 The sectional view of the rotating member along the AA direction provided by the embodiment of the present invention is shown in FIG. Figure 5 and Figure 6 The rotating member 1 includes a substrate and a first protruding portion 11 arranged on a first side of the substrate; the first protruding portion 11 is provided with a first moving contact 111 and a second moving contact 112 at intervals on a side away from the substrate. The rotating member 1 is a sheet-like structure, and the first moving contact 111 and the second moving contact 112 are connected to the substrate by riveting. The first moving contact 111 and the second moving contact 112 are arranged on the rotating member 1, and can make the first moving contact 111 contact with the first static contact 21, or make the second moving contact 112 contact with the second static contact 22 as the rotating member 1 rotates. The linear motion of the first moving contact 111 contacting with the first static contact 21, or the second moving contact 112 contacting with the second static contact 22 is changed into a rotational motion, so as to enhance the anti-vibration performance of the non-contact proximity switch 101.

[0041] The second side of the rotating member 1 opposite to the first side is connected to the limit block 3 and can rotate relative to the limit block 3. Figure 4 , Figure 4 A schematic diagram of the structure of the limit block provided in an embodiment of the present invention. A sharp angle structure 13 is provided on the second side of the substrate, and a V-shaped groove 31 is provided on the side of the limit block 3 opposite to the sharp angle structure 13, and the sharp angle structure 13 abuts against the bottom wall of the groove. The V-shaped groove 31 is provided on the limit block 3 to cooperate with the sharp angle structure 13 of the substrate. On the one hand, the limit block 3 can limit the rotating member 1 to prevent the limit block 3 from moving to one side; on the other hand, the V-shaped groove 31 can make the rotating member 1 rotate clockwise or counterclockwise around the limit block 3.

[0042] In order to realize that the driving device 5 drives the elastic component 4 to rotate, so as to drive the rotating member 1 to rotate around the limit block 3, the connecting portion of the rotating member 1 includes a second protrusion 12 arranged on one side of the substrate and adjacent to the first protrusion 11. A receiving groove is arranged at one end of the mounting seat 41, and a part of the structure of the elastic member 42 is located in the receiving groove. One end of the elastic member 42 is fixed to the bottom wall of the receiving groove, and the other end of the elastic member 42 is clamped with the second protrusion 12 of the rotating member 1. It should be noted that the elastic member 42 can be optionally a compression spring. The second protrusion 12 of the rotating member 1 is clamped at one end of the compression spring. When the non-contact proximity switch 101 is working in a vibration environment, the component force of the elastic force of the elastic member 42 can press the first moving contact 111 with the first static contact 21, or press the second moving contact 112 with the second static contact 22, so as to avoid contact malfunction of the non-contact proximity switch 101 in a vibration environment and improve stability.

[0043] In order to enable the driving device 5 to drive the elastic component 4 to rotate, optionally, the driving device 5 includes a movable magnetic component 53, a fixed magnetic component 54, a first connecting rod 51 and a second connecting rod 52, one end of the first connecting rod 51 is rotatably connected to the first end of the second connecting rod 52, and the other end of the second connecting rod 52 is provided with a mounting structure for mounting the movable magnetic component 53, a fixed magnetic component 54 is provided in the extension direction of the second connecting rod 52, and the second end of the second connecting rod 52 is rotatably connected to the mounting seat 41.

[0044] The fixed magnetic part 54 and the movable magnetic part 53 have the same magnetization direction, the movable magnetic part 53 and the fixed magnetic part 54 attract each other, the fixed magnetic part 54 applies a rightward force to the movable magnetic part 53, the first connecting rod 51 drives the second connecting rod 52 to move rightward, drives the elastic component 4 to rotate, so as to drive the rotating part 1 to rotate counterclockwise, so as to realize the contact between the second moving contact 112 and the second static contact 22.

[0045] In order to make the second connecting rod 52 better connect the first connecting rod 51 and the mounting seat 41, optionally, the second connecting rod 52 includes a connected straight first section and an arc-shaped second section, one end of the straight first section is connected to the first connecting rod 51, and one end of the arc-shaped second section is connected to the mounting seat 41.

[0046] The mounting seat 41 is L-shaped, including a first part and a second part connected to each other. A fixed shaft 43 is arranged at the intersection of the first part and the second part of the mounting seat 41. The driving device 5 drives the mounting seat 41 to rotate around the fixed shaft 43. One end of the L-shaped mounting seat 41 is used to rotate and connect the second connecting rod 52, and the other end of the L-shaped mounting seat 41 is used to connect the elastic member 42. The mounting seat 41 is designed to be L-shaped, one end of the L-shaped mounting seat 41 is connected to the second connecting rod 52 in an arc-shaped second section, and the other end of the L-shaped mounting seat 41 is concave to form a receiving groove, part of the structure of the elastic member 42 is located in the receiving groove, and one end of the elastic member 42 is fixed to the bottom wall of the receiving groove.

[0047] Optionally, an annular guide sleeve is provided on the outer side of the mounting seat 41 . The guide sleeve can play a certain limiting role when the driving device 5 drives the mounting seat 41 to rotate clockwise or counterclockwise.

[0048] In order to drive the first connecting rod 51 to move when the movable magnetic part 53 is subjected to external magnetic force, in an optional embodiment, a mounting structure is provided at the other end of the first connecting rod 51 for mounting the movable magnetic part 53, and the mounting structure of the first connecting rod 51 includes a mounting groove provided at the other end of the first connecting rod 51, and the mounting groove includes a bottom wall provided on the first connecting rod 51 and a first side wall, a second side wall, a third side wall and a fourth side wall connected thereto. The movable magnetic part 53 is disposed in the mounting groove and moves in a specific direction. When the movable magnetic part 53 moves to the right or left, it drives the first connecting rod 51 to rotate, and the first connecting rod 51 drives the second connecting rod 52 to rotate, and then drives the elastic component 4 to rotate, so that the first moving contact 111 contacts the first static contact 21, or the second moving contact 112 contacts the second static contact 22.

[0049] The non-contact switch includes a housing 7, the housing 7 includes a closed end and an open end, the housing 7 includes a ring-shaped base 2 arranged at the open end of the housing 7, a first static contact seat 23 and a second static contact seat 24 are arranged on one side of the base 2, the first static contact seat 23 includes a first mounting block and a first elastic arm connected, the first mounting block is fixed to one side of the base 2, and the end of the free end of the first elastic arm is provided with a first static contact 21; the second static contact seat 24 includes a second mounting block and a second elastic arm connected, the second mounting block is fixed to one side of the base 2, and the end of the free end of the second elastic arm is provided with a second static contact 22. The first static contact 21 is arranged at the end of the free end of the first elastic arm, and the second static contact 22 is arranged at the end of the free end of the second elastic arm. The first static contact 21 and the second static contact 22 can better cooperate with the first moving contact 111 and the second moving contact 112.

[0050] Optionally, the non-contact proximity switch 101 includes a first contact pin 25 and a second contact pin 26 that are arranged opposite to each other. The first contact pin 25 is an elongated structure, one end of which is located in the first mounting block, and the other end passes through the base 2 and is exposed from the other side of the base 2; the second contact pin 26 is an elongated structure, one end of which is located in the second mounting block, and the other end passes through the base 2 and is exposed from the other side of the base 2. The first contact pin 25 is connected to the first static contact seat 23, and the second contact pin 26 is connected to the second static contact seat 24. The right ends of the first static contact seat 23 and the second static contact seat 24 can be externally connected to a circuit to achieve electrical connection. An elastic sleeve 28 is provided on one side of the first contact pin 25 and the second contact pin 26 to play a protective role.

[0051] The non-contact proximity switch 101 also includes a clamping nut 6 arranged on the side of the base 2 away from the first static contact 21, the clamping nut 6 is detachably connected to the housing 7, the clamping nut 6 is located at the end of the base 2 away from the elastic member 42, and the clamping nut 6 is connected to the base 2 by a bolt 27 to clamp the base 2 to prevent the base 2 and the driving device 5 from escaping from the open end of the housing 7.

[0052] The housing 7 of the non-contact proximity switch 101 is in the shape of a long strip, one end of which is set as an open end and the other end is set as a closed end, and a first support seat and a second support seat are set inside the housing 7. The first support seat and the second support seat are both set in an annular shape, and the interior of the first support seat is used to install the fixed magnetic member 54 and the movable magnetic member 53, and the interior of the second support seat is used to install the limit block 3, the elastic component 4, the rotating member 1 and other components. By setting the first support member 71 and the second support member 72, the components of the non-contact proximity switch 101 can be better installed on the housing 7.

[0053] It should be noted that the first support member 71 and the second support member 72 and the connecting members of the first connecting rod 51 and the second connecting rod 52 should be made of insulating material to avoid generating magnetic conductivity to the movable magnetic member 53 and misleading the opening and closing of the non-contact proximity switch 101.

[0054] Figure 7 The schematic diagram of the valve position indication system provided by the embodiment of the present invention is shown in FIG. Figure 7A valve position indication system 100 includes a non-contact proximity switch 101 and a target 102 disposed at a closed end of a housing 7 away from a driving device 5, wherein the target 102 is used to attract a movable magnetic member 53 of the proximity switch. The target 102 is generally configured as a magnetic member, and the target 102 and the movable magnetic member 53 have the same magnetization direction, and the target 102 and the movable magnetic member 53 attract each other. When the target 102 and the movable magnetic member 53 are kept at a certain distance, and the attraction of the target 102 to the movable magnetic member 53 is greater than the attraction of the fixed magnetic member 54 to the movable magnetic member 53, the movable magnetic member 53 moves to the left, driving the first connecting rod 51 and the second connecting rod 52 to move to the left, causing the mounting seat 41 to rotate counterclockwise around the fixed axis 43, and driving the rotating member 1 to rotate clockwise, causing the first moving contact 111 to contact the first static contact 21, so that the non-contact proximity switch 101 is in an open state.

[0055] In an optional embodiment, when the distance between the target 102 and the movable magnetic part 53 is between 1.5mm and 2.5mm, the attraction of the target 102 to the movable magnetic part 53 is greater than the attraction of the fixed magnetic part 54 to the movable magnetic part 53, and the movable magnetic part 53 moves to the left, and the first connecting rod 51 drives the second connecting rod 52 to move to the left, and the second connecting rod 52 drives the mounting seat 41 to rotate counterclockwise around the fixed axis 43, and the elastic member 42 connected to the mounting seat 41 drives the rotating member 1 to rotate clockwise, so that the first static contact 21 contacts the first moving contact 111, so that the non-contact proximity switch 101 can be put into working state, and the elastic force of the elastic component 4 presses the first static contact 21 and the first moving contact 111, so that when the non-contact proximity switch 101 vibrates with the environment, the elastic pressing force can maintain reliable contact between the first static contact 21 and the first moving contact 111.

[0056] When the distance between the target 102 and the movable magnetic part 53 is greater than 2.5 mm, the attraction of the target 102 to the movable magnetic part 53 is less than the attraction of the fixed magnetic part 54 to the movable magnetic part 53, and the movable magnetic part 53 moves to the right, and the first connecting rod 51 drives the second connecting rod 52 to move to the right, and the second connecting rod 52 drives the mounting seat 41 to rotate clockwise around the fixed axis 43, and the elastic member 42 connected to the mounting seat 41 drives the rotating member 1 to rotate counterclockwise, so that the second static contact 22 contacts the second moving contact 112, and the elastic force of the elastic component 4 presses the two static contacts and the second moving contact 112, so that when the non-contact proximity switch 101 vibrates with the environment, the elastic pressing force can maintain the reliable contact between the second static contact 22 and the second moving contact 112, so that the non-contact proximity switch 101 can be in a non-working state.

[0057] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0058] In the description of this specification, the description of reference terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A non-contact proximity switch, characterized in that: include: A first stationary contact and a second stationary contact arranged opposite to each other and spaced apart; a limit block, located between the first stationary contact and the second stationary contact in a relative direction of the first stationary contact and the second stationary contact; An elastic component, comprising a mounting seat and an elastic member connected to the mounting seat; a rotating member, wherein a first side of the rotating member is located between the first static contact and the second static contact, and a first moving contact and a second moving contact are arranged at intervals on the first side of the rotating member, a second side of the rotating member opposite to the first side is connected to the limit block and can rotate relative to the limit block, and a connecting portion is arranged on the rotating member, and the connecting portion is connected to the elastic member; A driving device drives the elastic component to rotate, so as to drive the rotating member to rotate around the limit block, so that the first moving contact contacts the first static contact, or the second moving contact contacts the second static contact; The rotating member includes a base plate and a first protrusion disposed on the first side of the base plate; The first protrusion is provided with the first moving contact and the second moving contact at intervals on a side away from the substrate; The connecting portion includes a second protruding portion disposed on one side of the substrate and adjacent to the first protruding portion; A receiving groove is provided at one end of the mounting seat, a part of the structure of the elastic member is located in the receiving groove, one end of the elastic member is fixed to the bottom wall of the receiving groove, and the other end of the elastic member is engaged with the second protrusion of the rotating member; The driving device comprises a movable magnetic part, a fixed magnetic part, a first connecting rod and a second connecting rod, one end of the first connecting rod is rotatably connected to the first end of the second connecting rod, the other end of the first connecting rod is provided with a mounting structure for mounting the movable magnetic part, the fixed magnetic part is provided in the extending direction of the first connecting rod, and the second end of the second connecting rod is rotatably connected to the mounting seat; The mounting seat is L-shaped, including a first part and a second part that are connected. A fixed axis is set at the intersection of the first part and the second part. The driving device drives the mounting seat to rotate around the fixed axis. One end of the mounting seat is rotatably connected to the second connecting rod, and the other end of the mounting seat is connected to the elastic member.

2. The non-contact proximity switch according to claim 1, characterized in that: The second side of the substrate is provided with a sharp angle structure, and a V-shaped groove is provided on the side surface of the limiting block opposite to the sharp angle structure, and the sharp angle structure abuts against the bottom wall of the groove.

3. The non-contact proximity switch according to claim 1, characterized in that: The second connecting rod comprises a first straight section and a second arc-shaped section connected to each other, one end of the first straight section is connected to the first connecting rod, and one end of the second arc-shaped section is connected to the mounting seat.

4. The non-contact proximity switch according to claim 1, characterized in that: The mounting structure of the first connecting rod comprises a mounting groove arranged at the other end of the first connecting rod, and the movable magnetic member is arranged in the mounting groove and moves along a specific direction.

5. The non-contact proximity switch according to any one of claims 1 to 4, characterized in that: The non-contact proximity switch comprises a housing, the housing comprises a closed end and an open end, the housing comprises a ring-shaped base arranged at the open end of the housing, a first static contact seat and a second static contact seat are arranged opposite to each other on one side of the base, The first static contact seat comprises a first mounting block and a first elastic arm connected to each other, the first mounting block is fixed to one side of the base, and the first static contact is arranged at the end of the free end of the first elastic arm; The second static contact seat comprises a second mounting block and a second elastic arm connected to each other, the second mounting block is fixed on one side of the base, and the second static contact is arranged at the end of the free end of the second elastic arm.

6. A valve position indication system, characterized in that: The invention comprises the non-contact proximity switch according to any one of claims 1 to 5 and a target arranged on a side of the non-contact proximity switch away from the driving device, wherein the target is used to attract a movable magnetic part of the non-contact proximity switch.

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