Safety switch plug and assembly

Abstract

The utility model relates to the field of contact switches, in particular to a safety switch plug and assembly, a mounting seat of the plug is provided with a containing cavity, a first spring and a second spring are arranged in the containing cavity, and the first spring and the second spring are located on the two opposite sides of a sliding groove respectively; the movable part is connected with the first spring and the second spring, rotating shafts are arranged on the two sides of the movable part respectively, and the rotating shafts are arranged in the sliding grooves in a sliding mode and can rotate in the sliding grooves so that the movable part can move and rotate relative to the installation base. The first springs and the second springs are arranged in pairs relative to the rotating shaft, so that the stability of telescopic and rotating motion of the movable part is achieved, stable supporting force can be provided when the movable part rotates in any direction through the arrangement of the double springs in pairs, it is guaranteed that the movable state of the movable part is stable, and shaking of an elevator is well adapted; the stability of connection between the plug and the socket is ensured, and the safety of elevator operation is improved.

Description

Technical Field

[0001] This application relates to the field of contact switches, and specifically to a safety switch plug and assembly. Background Technology

[0002] As a core safety component in elevator control systems, elevator contact switches typically consist of independent switch sockets and switch plugs. The plug and socket are installed on different elevator components. With the movement of the elevator door, the plug moves relative to the socket, thereby extending into the socket to connect the conductive terminals inside the socket. By removing the plug from the socket, the conductive terminals are disconnected.

[0003] In existing technologies, the plug structure is relatively simple. Although it can enable the socket to connect the circuit, the frequent shaking during elevator operation inevitably causes unnecessary displacement of the plug, which in turn leads to the disconnection of the internal circuit of the socket and poor contact, posing a threat to the safe operation of the elevator. Even if existing technologies use springs to achieve a buffering effect on the plug, the simple spring arrangement is difficult to adapt to the complex environment of elevator shaking, making it difficult to guarantee the stability of the plug-socket connection and resulting in insufficient safety. Utility Model Content

[0004] To solve, or at least partially solve, the above-mentioned technical problems, this application provides a safety switch plug, comprising:

[0005] The mounting base has a receiving cavity with an opening on one side. The opposite side walls of the receiving cavity are respectively provided with sliding grooves extending toward the opening. A first spring and a second spring are provided inside the receiving cavity, and the first spring and the second spring are respectively located on opposite sides of the sliding grooves.

[0006] The movable component has one end disposed in the receiving cavity and connected to the first spring and the second spring, and the other end extends from the receiving cavity to the outside of the opening. The movable component has a rotating shaft on each side, and the rotating shaft is slidably disposed in the slide groove and can rotate in the slide groove so that the movable component can move and rotate relative to the mounting base.

[0007] The first spring and the second spring provide elastic force for the movement and rotation of the movable part, respectively.

[0008] According to one embodiment provided in this application, the active component includes:

[0009] A connecting portion is disposed within the receiving cavity, and the rotating shaft is fixedly disposed on opposite sides of the connecting portion;

[0010] A plug-in portion is located at the end of the movable member away from the mounting base and is used to contact the socket;

[0011] An extension portion connects the connecting portion and the insertion portion, and the two sides of the extension portion have concave arc-shaped sidewalls that match the edge of the opening.

[0012] According to one embodiment of this application, elastic buckles are respectively provided on opposite sides of the edge of the opening, and the elastic buckles have protrusions protruding into the opening, the protrusions being used to limit the connecting portion.

[0013] According to one embodiment provided in this application, the protrusion has an abutting arc surface, which is used to slide against the concave arc-shaped sidewall.

[0014] According to one embodiment of this application, a locking block is provided at each of the two corners of the connecting part, and the locking block is used to limit the engagement with the protrusion.

[0015] The edge of the card block has a rounded chamfer, which slides in conjunction with the inner wall of the receiving cavity.

[0016] According to one embodiment of this application, two fixing posts are provided on the end surface of the connecting portion away from the extension portion. The first spring and the second spring are respectively sleeved on the fixing posts, and the two ends of the first spring and the second spring respectively abut against the end face of the connecting portion and the bottom of the receiving cavity.

[0017] According to one embodiment provided in this application, the side surface of the plug portion away from the extension portion has a contact bridge, the contact bridge being made of a conductive material, for contacting two conductive terminals of the socket to electrically connect the two conductive terminals.

[0018] According to one embodiment provided in this application, the contact bridge includes a conductive plate and two contacts disposed on the surface of the conductive plate, the contacts having a protruding arc-shaped outer surface;

[0019] The conductive plate is detachably connected to the plug-in portion.

[0020] According to one embodiment provided in this application, the mounting base includes:

[0021] A base, the surface of which has mounting holes;

[0022] A connecting seat is fixedly connected to the base, the receiving cavity is disposed inside the connecting seat, and the sliding groove penetrates the side wall of the connecting seat.

[0023] This application provides a safety switch assembly, including:

[0024] The socket has at least two conductive terminals inside.

[0025] As described above, the safety switch plug is movable relative to the socket to press or contact the conductive terminals, thereby electrically connecting the conductive terminals.

[0026] The safety switch plug provided in this application has a mounting base with a receiving cavity. One side of the receiving cavity has an opening, and the opposite side walls of the receiving cavity are respectively provided with sliding grooves extending towards the opening. A first spring and a second spring are disposed within the receiving cavity, located on opposite sides of the sliding grooves. One end of a movable component is disposed within the receiving cavity and connected to the first and second springs, while the other end extends from the receiving cavity to the outside of the opening. Rotating shafts are respectively provided on both sides of the movable component, slidably disposed within the sliding grooves, and capable of rotating within the grooves, allowing the movable component to move and rotate relative to the mounting base. The first and second springs provide elastic force for the movement and rotation of the movable component, respectively. This application achieves smooth extension and rotation of the movable component through the paired arrangement of the first and second springs relative to the rotating shafts. The paired arrangement of the two springs provides stable support force when the movable component rotates in any direction, ensuring that the movable component is not easily deformed excessively, better adapting to elevator swaying, ensuring the stability of the plug-socket connection, and improving the safety of elevator operation. Attached Figure Description

[0027] To more clearly illustrate the embodiments of this application, the relevant accompanying drawings will be briefly described below. It is understood that the drawings described below are only for illustrating some embodiments of this application, and those skilled in the art can obtain many other technical features and connections not mentioned herein based on these drawings.

[0028] Figure 1 This is a schematic diagram of the structure of the safety switch plug of this application;

[0029] Figure 2 This is an exploded structural diagram of the safety switch plug of this application;

[0030] Figure 3 This is a structural schematic diagram of the safety switch plug in the rotating state of this application.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Mounting bracket; 11. Base; 12. Connecting bracket;

[0033] 111. Mounting hole; 121. Receiving cavity; 122. Opening; 123. Slide groove; 124. Elastic snap; 125. Protrusion;

[0034] 2. Moving part; 21. Connecting part; 22. Extension part; 23. Insertion part;

[0035] 201. Rotating shaft; 211. Clamping block; 212. Fixing post; 221. Concave arc-shaped sidewall;

[0036] 31. First spring; 32. Second spring;

[0037] 4. Contact bridge; 41. Conductive plate; 42. Contact point. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0039] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0041] The technical solutions in the embodiments of this application will be described in detail below with reference to the accompanying drawings. Example 1

[0042] like Figures 1-3As shown, this embodiment provides a safety switch plug. The plug includes a mounting base 1 and a movable part 2. The mounting base 1 includes a base 11 and a connecting base 12. The base 11 is used to connect with the mounting part on the elevator door. The surface of the base 11 has two mounting holes 111. The mounting holes 111 are used to cooperate with bolts to fix the base 11 to the mounting part on the elevator door.

[0043] The connecting seat 12 is fixedly connected to the base 11 and can be formed as one piece. The connecting seat 12 has a receiving cavity 121. One side of the receiving cavity 121 has an opening 122. The opposite side walls of the receiving cavity 121 are respectively provided with sliding grooves 123 extending toward the opening 122. The sliding grooves 123 penetrate through the side walls of the connecting seat 12.

[0044] A first spring 31 and a second spring 32 are provided inside the receiving cavity 121. The first spring 31 and the second spring 32 are arranged in parallel and are located on opposite sides of the slide groove 123. That is, the first spring 31, the second spring 32 and the slide groove 123 are parallel to each other, and the first spring 31 and the second spring 32 are symmetrically arranged with the slide groove 123 as the center line.

[0045] In this embodiment, one end of the movable member 2 is disposed in the receiving cavity 121 and connected to the first spring 31 and the second spring 32, and the other end extends from the receiving cavity 121 to the outside of the opening 122. The movable member 2 can move elastically relative to the mounting base 1 through the first spring 31 and the second spring 32.

[0046] The movable component 2 has two rotating shafts 201 on each side, which extend into the sliding grooves 123 on both sides. The rotating shafts 201 are slidably disposed in the sliding grooves 123, which limit their movement. The rotating shafts 201 can rotate within the sliding grooves 123. Thus, the movable component 2 can not only move relative to the mounting base 1 along the sliding grooves 123 through the cooperation between the rotating shafts 201 and the sliding grooves 123, but also rotate relative to the mounting base 1 through the rotating shafts 201. Since the rotating shafts 201 slide within the sliding grooves 123, the movable component 2 can rotate while moving relative to the mounting base 1.

[0047] When the movable part 2 slides or rotates relative to the mounting base 1, the first spring 31 and the second spring 32 provide elastic force for the movement and rotation of the movable part 2, respectively, so that the movable part 2 can be reset after sliding or rotating.

[0048] In this embodiment, the paired arrangement of the first spring 31 and the second spring 32 relative to the rotating shaft 201 achieves the smoothness of the extension and rotation of the movable part 2. The paired arrangement of the two springs can provide stable support force when the movable part 2 rotates in any direction, ensuring that the movable part 2 is not easily deformed, better adapting to the swaying of the elevator, ensuring the stability of the plug and socket connection, and improving the safety of elevator operation.

[0049] like Figure 3 As shown, the first spring 31 and the second spring 32 are located on both sides of the rotating shaft 201. When the movable part 2 rotates, the compression degree of the first spring 31 and the second spring 32 is different. Compared with the design of a single spring, the bending amount of the double spring is reduced when it is squeezed and deformed, which can effectively prevent the spring from bending excessively and causing damage. Moreover, the two springs are respectively abutted against the two ends of the movable part 2, which can provide a greater elastic force for rotational reset and improve the ability of the plug to rotate and deform.

[0050] In practical applications, the plug can be inserted into the socket in a straight line (along the extension direction of the slide groove 123) or by rotating it.

[0051] When the plug is inserted into the socket in a straight line (along the extension direction of the slide groove 123), the first spring 31 and the second spring 32 extend and retract synchronously to provide a reset force for the moving part 2. The first spring 31 and the second spring 32 can also adapt to slight shaking.

[0052] When the plug is inserted into the socket in a rotating manner, the movable part 2 will rotate relative to the mounting base 1. At this time, the first spring 31 and the second spring 32 achieve the rotation of the movable part 2 through different degrees of extension and contraction. The first spring 31 and the second spring 32 respectively abut against the two ends of the movable part 2, which can provide greater elastic force for rotational reset, improve the adaptability of the movable part 2 to the rotational bending state, and improve the flexibility and structural stability of the plug.

[0053] like Figure 2 As shown, the movable member 2 is divided into a connecting portion 21, an extension portion 22, and a plug-in portion 23 along its length. The connecting portion 21 is disposed within the receiving cavity 121, and the rotating shaft 201 is fixedly disposed on opposite sides of the connecting portion 21. The first spring 31 and the second spring 32 abut against the side surface of the connecting portion 21. The plug-in portion 23 is disposed at the end of the movable member 2 away from the mounting base 1 and is used to contact the socket. The extension portion 22 connects the connecting portion 21 and the plug-in portion 23, and both sides of the extension portion 22 have concave arc-shaped sidewalls 221 that match the edges of the opening 122.

[0054] like Figure 2 and Figure 3As shown, elastic buckles 124 are provided on opposite sides of the edge of the opening 122. The elastic buckles 124 have protrusions 125 that protrude into the opening 122. The protrusions 125 are used to limit the connection part 21.

[0055] Specifically, locking blocks 211 are provided at both corners of the connecting part 21. The locking blocks 211 are used to engage with the protrusion 125 for limiting. The protrusion 125 can block the locking blocks 211, thereby limiting the connecting part 21 within the receiving cavity 121 and preventing the movable part 2 from falling off.

[0056] The protrusion 125 has an abutting arc surface. When the movable part 2 is rotating, the abutting arc surface can slide against the concave arc sidewall 221, thereby improving the stability of the movable part 2 in the rotation state.

[0057] In this embodiment, the edge of the locking block 211 has a rounded chamfer, which slides in conjunction with the inner wall of the receiving cavity 121 to facilitate the rotation of the movable part 2 and reduce the resistance generated between the connecting part 21 and the inner wall of the receiving cavity 121.

[0058] It is worth mentioning that in this embodiment, the elastic buckle 124 not only limits the connection part 21, but also provides support for the rotation of the movable part 2. When the movable part 2 rotates to contact the elastic buckle 124, the first spring 31 and the second spring 32 provide support for the rotation of the movable part 2 from the end of the movable part 2, while the elastic buckle 124 provides support for the rotation of the movable part 2 from the side of the movable part 2, ensuring that the movable part 2 has sufficient elastic support, further improving the rotational stability of the movable part 2 and improving the activity strength of the plug.

[0059] like Figure 2 As shown, two fixing posts 212 are provided on the end surface of the connecting part 21 away from the extension part 22. The first spring 31 and the second spring 32 are respectively sleeved on the fixing posts 212, which can improve the installation stability of the springs. The two ends of the first spring 31 and the second spring 32 respectively abut against the end face of the connecting part 21 and the bottom of the receiving cavity 121.

[0060] In this embodiment, the plug-in part 23 can be made of insulating material, and by abutting against the conductive terminals inside the socket, the two conductive terminals inside the socket are brought into contact to achieve electrical connection; the plug-in part 23 can also be made of conductive material, and by extending into the socket and simultaneously contacting the two conductive terminals, the two conductive terminals are brought into contact to achieve electrical connection.

[0061] like Figure 2 As shown, in one embodiment, the side surface of the plug portion 23 away from the extension portion 22 has a contact bridge 4, which is made of conductive material and is used to contact two conductive terminals inside the socket to electrically connect the two conductive terminals.

[0062] Specifically, the contact bridge 4 includes a conductive plate 41 and two contacts 42 disposed on the surface of the conductive plate 41. The contacts 42 have a protruding arc-shaped outer surface for contacting the conductive terminals inside the socket and are adapted to the rotational movement of the movable part 2 to ensure good contact between the contacts 42 and the conductive terminals. The conductive plate 41 is detachably connected to the plug-in part 23 to facilitate replacement or maintenance of the contact bridge 4. Example 2

[0063] This embodiment provides a safety switch assembly, which includes a socket and the safety switch plug mentioned in the above embodiment. The socket has at least two conductive terminals. The socket and plug are respectively installed on two parts of the elevator door. When the elevator door opens and closes, the safety switch plug moves relative to the socket to press or contact the conductive terminals, making the conductive terminals electrically connected and realizing the corresponding electronic control operation of the elevator door. This safety switch assembly also possesses all the advantages described above.

[0064] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0065] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A safety switch plug, characterized by include: Mounting base (1), the mounting base (1) has a receiving cavity (121), one side of the receiving cavity (121) has an opening (122), and the opposite side walls of the receiving cavity (121) are respectively provided with sliding grooves (123) extending toward the opening (122); a first spring (31) and a second spring (32) are provided in the receiving cavity (121), the first spring (31) and the second spring (32) are respectively located on opposite sides of the sliding groove (123); The movable part (2) has one end disposed in the receiving cavity (121) and connected to the first spring (31) and the second spring (32), and the other end extends from the receiving cavity (121) to the outside of the opening (122). The movable part (2) has a rotating shaft (201) on each side. The rotating shaft (201) is slidably disposed in the slide groove (123) and can rotate in the slide groove (123) so that the movable part (2) can move and rotate relative to the mounting base (1). The first spring (31) and the second spring (32) provide elastic force for the movement and rotation of the movable part (2), respectively.

2. The safety switch plug of claim 1, wherein, The movable component (2) includes: A connecting part (21) is disposed inside the receiving cavity (121), and the rotating shaft (201) is fixedly disposed on opposite sides of the connecting part (21); A plug-in portion (23) is provided at one end of the movable member (2) away from the mounting base (1) for contacting the socket; The extension (22) connects the connecting part (21) and the plug-in part (23), and the two sides of the extension (22) have concave arc-shaped sidewalls (221) that match the edge of the opening (122).

3. The safety switch plug of claim 2, wherein, On opposite sides of the edge of the opening (122), there are elastic buckles (124), and the elastic buckles (124) have protrusions (125) protruding into the opening (122), which are used to limit the connection (21).

4. The safety switch plug of claim 3, wherein, The protrusion (125) has an abutting arc surface, which is used to slide against the concave arc-shaped sidewall (221).

5. The safety switch plug of claim 3 wherein, The connecting part (21) is provided with a locking block (211) at each of the two corners, and the locking block (211) is used to limit the engagement with the protrusion (125); The edge of the card block (211) has a rounded chamfer, which slides in conjunction with the inner wall of the receiving cavity (121).

6. The safety switch plug of claim 2, wherein, Two fixing posts (212) are provided on one end surface of the connecting part (21) away from the extension part (22). The first spring (31) and the second spring (32) are respectively sleeved on the fixing posts (212). The two ends of the first spring (31) and the second spring (32) respectively abut against the end face of the connecting part (21) and the bottom of the receiving cavity (121).

7. The safety switch plug of claim 2, wherein, The plug portion (23) has a contact bridge (4) on the side surface away from the extension portion (22). The contact bridge (4) is made of conductive material and is used to contact the two conductive terminals of the socket to electrically connect the two conductive terminals.

8. The safety switch plug of claim 7, wherein, The contact bridge (4) includes a conductive plate (41) and two contacts (42) disposed on the surface of the conductive plate (41), the contacts (42) having a protruding arc-shaped outer surface; The conductive plate (41) is detachably connected to the plug-in part (23).

9. The safety switch plug according to any one of claims 1 to 8, wherein The mounting base (1) includes: Base (11), the surface of which has mounting holes (111); The connecting seat (12) is fixedly connected to the base (11), the receiving cavity (121) is disposed in the connecting seat (12), and the sliding groove (123) penetrates the side wall of the connecting seat (12).

10. A safety switch assembly comprising: include: The socket has at least two conductive terminals inside. The safety switch plug as described in any one of claims 1 to 9, wherein the safety switch plug is movable relative to the socket to press or contact the conductive terminal to electrically connect the conductive terminal.

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