CN215402514U - Switch plug for contact switch of elevator, contact switch and elevator system - Google Patents

Abstract

The application provides a switch plug, contact switch and elevator system for contact switch of elevator. The switch plug includes: mounting a base; at least two sleeves, which are respectively installed on the installation base, wherein each sleeve is provided with a first opening far away from the installation base; at least two elastic elements, each elastic element is respectively arranged in each sleeve; at least two pins, each pin forming an electrical connection via the mounting base; each contact pin is provided with a first section and a second section respectively, the first section is limited in the sleeve, and the second section is pressed by the elastic element to extend out of the first opening of the sleeve; wherein the second section is capable of oscillating relative to the sleeve. According to the application, the switch plug and the contact switch and the elevator system using the switch plug are provided with the sleeve and the contact pin which can swing relatively, so that an adjusting space for the contact of the contact pin and the socket is provided, and the contact switch still keeps high reliability after being used for a long time.

Description

Switch plug for contact switch of elevator, contact switch and elevator system

Technical Field

The present application relates to the field of elevators, and more particularly, to a contact switch for an elevator system and a switch plug thereof.

Background

Passenger conveyors are common in everyday life as a means of improving passenger walking between floors or reducing passenger walking distance. By way of example, it is particularly common to use escalators, elevators and travelators, which are commonly used between floors of commercial buildings and in large airports.

In the case of elevator systems having an elevator car which normally runs in a dedicated shaft, the passengers can be driven into or out of the elevator car by opening the floor doors in conjunction with the car doors when the elevator car is moved to the destination floor. In this process, contact switches are usually used to control the opening or closing of the car doors, or even to control the stopping and starting of the elevator car at the floors. During the operation of the elevator system, the car door needs to be opened and closed extremely frequently, and the opening and closing failure during the operation process directly affects the safety performance of the equipment, and even endangers the life of a user in serious cases. Therefore, contact switches face a great reliability and life challenge in the context of elevator system applications.

Disclosure of Invention

The present application aims to provide a switch plug for a contact switch of an elevator, a contact switch and an elevator system to solve or at least alleviate some of the aforementioned technical problems.

To achieve at least one object of the present application, according to one aspect of the present application, there is provided a switch plug for a contact switch of an elevator, including: mounting a base; at least two sleeves mounted on the mounting base, respectively, each of the sleeves having a first opening distal from the mounting base; at least two elastic elements, each elastic element being mounted within each sleeve; the at least two contact pins are electrically connected through the mounting base; each contact pin is provided with a first section and a second section respectively, the first section is limited in the sleeve, and the second section is pressed by the elastic element to extend out of the first opening of the sleeve; wherein the second section is capable of oscillating relative to the sleeve.

In addition or alternatively to one or more of the above features, in a further embodiment the mounting base comprises: an insulating base body; the conducting plate is arranged in the insulating seat body and is connected with the sleeves; wherein each of the pins is electrically connected to the conductive plate through each of the sleeves.

In addition or alternatively to one or more of the above features, in a further embodiment, the insulative housing comprises: the insulating top shell is provided with an opening; wherein the conductive plate is disposed between the insulating bottom case and the insulating top case, and each of the sleeves is connected to the conductive plate through the opening.

In addition or alternatively to one or more of the above features, in a further embodiment, each of the sleeves has a second opening proximate the mounting base, and the second opening of each of the sleeves is fixedly coupled to the conductive plate via a conductive bolt.

In addition or alternatively to one or more of the above features, in a further embodiment, the second section is configured to extend along a length direction of the sleeve and has a dimension in a width direction of the sleeve that is smaller than the first opening; the first section is configured to radially extend around the second section to protrude, and has a dimension in a width direction of the sleeve larger than the first opening.

In addition or alternatively to one or more of the above features, in a further embodiment an outer circumference of the first section has a guiding curve facilitating the oscillation of the second section relative to the sleeve.

In addition to or as an alternative to one or more of the features described above, in a further embodiment the second section is configured as a cylindrical section and the first section is configured as a radially extending convex disc section around the second section.

In addition or alternatively to one or more of the above features, in a further embodiment the first section is provided at an end of the second section and the first section has a counterbore for receiving an end of the resilient element.

In addition to or as an alternative to one or more of the features described above, in a further embodiment, the end of each of the pins has a cambered section.

In addition to or as an alternative to one or more of the above features, in a further embodiment the resilient element presses the first section of the pin against the first opening of the sleeve.

In addition to or as an alternative to one or more of the above features, in a further embodiment the resilient element is configured as a helical spring.

To achieve at least one object of the present application, according to another aspect of the present application, there is provided a contact switch for an elevator, including: a switch plug as described previously; and a switch socket including: the shell is provided with at least two jacks; the at least two conductive contacts are arranged in the shell, and each conductive contact is respectively close to each jack; in an operating state, each contact pin of the switch plug penetrates each jack and contacts each conductive contact.

In addition to or as an alternative to one or more of the above features, in a further embodiment, each of the conductive contacts is aligned along a length of the housing.

In addition or alternatively to one or more of the above features, in a further embodiment, the housing comprises a front cover and a rear cover; the installation bolt penetrates through the front cover and the rear cover from two sides of the conductive contact and extends and protrudes from the rear cover to be used for fixedly installing the contact switch to an elevator system.

In addition or alternatively to one or more of the above features, in a further embodiment, the housing further comprises at least two bending conductive strips, each conductive contact is disposed on a first bend of each bending conductive strip, and a mounting hole is disposed on a second bend of each bending conductive strip, and each bending conductive strip is fastened to the housing through the mounting hole via a conductive bolt.

In addition or alternatively to one or more of the above features, in a further embodiment each of the conductive contacts has a profile that matches each of the receptacles.

In addition or alternatively to one or more of the above features, in a further embodiment, each of the conductive contacts has an inwardly concave profile at a surface for contacting each of the pins.

To achieve at least one object of the present application, according to still another aspect of the present application, there is provided an elevator system including: an elevator car having a car door; a landing door that is linked with the car door; a landing door lock having a door lock body and a door lock latch hook; and a contact switch as previously described; the switch plug of the contact switch is installed on the door lock hook, the switch socket is installed on the door lock main body, and the length direction of the shell of the switch socket extends along the opening and closing direction of the landing door; in the closing process of the landing door, the door lock hook drives the switch plug to be rotatably inserted into the switch socket on the door lock main body.

In addition to or as an alternative to one or more of the above features, in a further embodiment the electrically conductive contacts cover a trace of the pin being oscillated with respect to the sleeve.

According to the switch plug of the contact switch, through setting up sleeve and the contact pin of mutually supporting to make the contact pin can take place the swing for the sleeve, this one end of switch plug provides the adjustment space of contact pin and socket contact from this point to this, makes this kind of contact switch still can keep high reliability after long-time the use. Elevator systems applying such contact switches thus also have a higher reliability.

Drawings

Fig. 1 is a perspective view of one embodiment of a switch plug for a contact switch of an elevator system.

Fig. 2 is a perspective view of an embodiment of a switch plug for a contact switch of an elevator system with a sleeve omitted.

Fig. 3 is a perspective view of a pin of one embodiment of a switch plug for a contact switch of an elevator system.

Fig. 4 is a cross-sectional schematic view of a pin of one embodiment of a switch plug for a contact switch of an elevator system.

Fig. 5 is a perspective schematic view of a sleeve of one embodiment of a switch plug for a contact switch of an elevator system.

Fig. 6 is a cross-sectional schematic view of a sleeve of one embodiment of a switch plug for a contact switch of an elevator system.

Fig. 7 is a perspective view of a coil spring of one embodiment of a switch plug for a contact switch of an elevator system.

Fig. 8 is a cross-sectional schematic view of the pin and sleeve mating of one embodiment of a switch plug for a contact switch of an elevator system.

Fig. 9 is a perspective view of a pin and spring mating of one embodiment of a switch plug for a contact switch of an elevator system.

Fig. 10 is a perspective schematic view of a conductive plate of one embodiment of a switch plug for a contact switch of an elevator system.

Fig. 11 is a perspective view of a conductive plate of one embodiment of a switch plug for a contact switch of an elevator system mated with an insulative top shell.

Fig. 12 is a perspective view of an insulating base shell of one embodiment of a switch plug for a contact switch of an elevator system.

Fig. 13 is a perspective view of one embodiment of a switch receptacle for a contact switch of an elevator system with the front cover omitted.

Fig. 14 is a perspective view of conductive contacts of one embodiment of a switch receptacle for a contact switch of an elevator system mated with a bent conductive tab.

Detailed Description

The present application will be described in detail below with reference to exemplary embodiments in the drawings. It should be understood, however, that the present application may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the application to those skilled in the art.

Furthermore, to any single feature described or implicit in an embodiment or shown or implicit in the drawings, the present application still allows any combination or permutation to continue between the features (or their equivalents) without any technical impediment, thereby achieving more other embodiments of the present application that may not be directly mentioned herein.

For ease of description of the embodiments mentioned herein, the length direction X and the width direction Y are introduced herein as their reference coordinate systems. The directional description is intended to express the relative positional relationship between the respective parts, and not to restrict the absolute positional relationship thereof. Wherein the length direction X generally means the direction in which the part has a longer dimension, and the width direction Y generally means the direction in which the part has a shorter dimension.

The present application describes herein, by way of example, contact switches for an elevator system and their arrangement in connection with an elevator system in conjunction with fig. 1-14. The contact switch generally comprises a switch plug and a switch socket. Fig. 1 to 12 show a switch plug of a contact switch and parts thereof from different perspectives, while fig. 13 to 14 show a switch socket of a contact switch and parts thereof. As will be explained below.

Referring to fig. 1 to 12, the switch plug 100 includes a mounting base 110, a sleeve 120, an elastic member 130, and a pin 140. Wherein the mounting base 110 is used to provide support and protection for other components. The two sleeves 120 are respectively mounted on the mounting base 110, and the elastic member 130 and a portion of the pin 140 are respectively disposed in each sleeve 120. Further, each sleeve 120 is provided with a first opening 121 at a side away from the mounting base 110 so that the pin 140 is inserted therethrough. Specifically, each pin 140 has a first section 141 and a second section 142, respectively, the first section 141 is limited in the sleeve 120, and the second section 142 is pressed by the elastic element 130 to protrude from the first opening 121 of the sleeve 120, and the second section 142 is configured to swing relative to the sleeve 120. In addition, each pin 140 is electrically connected to another conductive structure through the mounting base 110, so that when each pin 140 is connected to another conductive structure, its interior is conducted and a complete conductive loop is formed to perform a corresponding on/off function of the switch.

Under this kind of arrangement, according to the switch plug 100 of the contact switch of this application, through setting up sleeve 120 and contact pin 140 that mutually support to make contact pin 140 can take place the swing for sleeve 120, this one end of switch plug 100 provides contact pin 140 and the adjustment space of socket on the contact surface from this, makes this kind of contact switch still can keep good contact after long-time the use, and then has higher reliability, and it is particularly useful for fields such as elevator that the switch break-make is frequent.

It should be understood that although the embodiments herein are described with two pins and mating parts as examples, this is not a limitation of the inventive concept in fact. The number of pins may be adjusted according to the application, for example three or more.

The construction of the respective components of the contact switch and the connection relationship thereof will be described further below. In addition, for further improvement of reliability, practicability, economy or other aspects, additional parts may be added, as also exemplified below.

For example, referring to fig. 10 to 12, the mounting base 110 may be configured to include an insulating housing and a conductive plate 113 disposed within the insulating housing. The existence of the insulating base body can avoid the short circuit risk, and the existence of the conductive plate 113 can ensure the electric connection between the pins. Specifically, the conductive plate 113 may be connected to each sleeve 120 such that each pin 140 forms an electrical connection therebetween through each sleeve 120 and the conductive plate 113.

For another example, in practical applications, the insulation base can be designed as several detachable parts made of insulation material for easy manufacturing. As one example, the insulation housing body includes an insulation bottom case 112 and an insulation top case 111 connected to each other, and a conductive plate 113 is disposed between the insulation bottom case 112 and the insulation top case 111. The arrangement scheme is beneficial to simplifying the manufacturing difficulty of the insulating base body. Further, an opening 111a is also provided on the insulating top case 111, so that each sleeve 120 can be connected to the conductive plate 113 through the opening 111 a. In addition, a kidney-shaped hole 112a may be further provided on the insulating bottom case 112 to facilitate fixing the entire switch plug 100 to a position to be mounted therethrough and to provide a certain degree of adjustment margin.

Furthermore, an opening 113a may be further formed on the conductive plate 113, and a thread may be simultaneously formed on the sleeve 120 inside the second opening 122 close to the mounting base 110 (as shown in fig. 6), so that a conductive bolt (not shown) may sequentially pass through the conductive plate 113, the insulating top case 111, and be screwed into the internal thread of the sleeve 120, thereby achieving fastening of the conductive plate 113 and the sleeve and electrical connection between the conductive plate and the sleeve, and improving assembly efficiency.

Referring to fig. 3, 4 and 8, in order to allow the pin 140 to move relative to the sleeve 120 and ensure that it is retained by the sleeve 120, it may be configured to resemble a bolt. Specifically, the second section 142 thereof is configured to extend along the length direction of the sleeve 120, and the size thereof in the width direction of the sleeve 120 is smaller than the first opening 121. For example, it is configured as a cylindrical section, thereby making it possible to move the second section 142 relative to the sleeve 120. The first section 141 of the pin 140 is configured to protrude around the second section 142 in a radial direction, and has a size larger than the first opening 121 in the width direction of the sleeve 120. For example, it is configured as a disk section, thereby making it possible for the first section 141 to be restrained by the sleeve 120.

On this basis, in order to facilitate the swing of the second section 142 with respect to the sleeve 120, a guide curved surface 141a may be further provided at the outer circumference of the first section 141, the guide curved surface 141a allowing the swing of the pin 140 with respect to the sleeve 120 to occur more smoothly without being excessively hindered or stuck.

Referring to fig. 4, 7 and 9, the elastic element 130 may be configured as a coil spring having an elastic recovery capability and a service life much greater than that of a plate spring or a reed, for example, it is possible to achieve transition of the switching times from the hundred thousand level to the million level. In addition, in order to achieve a more accurate assembly between the pins 140 and the coil spring, a counterbore 141b for receiving an end of the coil spring may be further provided at the first section 141 provided at an end of the second section 142. Furthermore, for ease of assembly, the resilient element 130 may also be configured to press the first section 141 of the pin 140 against the first opening 121 of the sleeve 120 in the non-operative state.

For example, the end of each pin 140 may have a curved section 140 a. For example, the end of the pin is integrally made into a hemispherical or conical section, or the end of the pin is only provided with a round angle, so that the friction between the conductive layer of the pin and the conductive contact can be effectively reduced, and the service life of the product is prolonged.

Referring to fig. 13 and 14, the switching socket 200 includes a housing 210 on which two insertion holes 211 are provided. Two conductive contacts 220 are disposed within the housing 210, each disposed adjacent one of the receptacles 211. At this time, in the operating state, each pin 140 of the switch plug 100 will pass through each jack 211 and contact each conductive contact 220 to realize the electrical connection between the plug and the socket. With this arrangement, the switch socket 200 adapted to the switch plug 100 of any embodiment or combination thereof can no longer require the conductive contacts 220 thereof to be disposed on the corresponding elastic elements, thereby providing higher reliability at the socket end. In view of the above-mentioned improvement in reliability of the plug terminal, such a contact switch has more stable on/off and higher reliability as a whole, and is particularly suitable for use in the fields of elevators and the like in which the on/off of the switch is frequent.

For the switch socket 200, since the reed part has been omitted, in order to further optimize the structure thereof and improve the design compactness, on the one hand, the respective conductive contacts 220 may be arranged to be arranged along the length direction X of the housing 210; on the other hand, when the housing of the socket is provided as a split structure including a front cover (not shown in the drawings) and a rear cover 212, mounting bolts may be further provided to pass through the front and rear covers 212 from mounting bolt holes 213 on both sides of the conductive contact 220 and to extend to protrude from the rear cover 212 for fixedly mounting the contact switch to the elevator system.

For another example, two bending conductive sheets 230 may be further provided, such that the conductive contact 220 is provided on the first bending 231 of the bending conductive sheet 230, and the mounting hole 232a is provided on the second bending 232 thereof, so that the bending conductive sheet 230 is tightly connected to the housing 210 through the mounting hole 232a via a conductive bolt.

In addition, to ensure that the pins 140 can be inserted into the conductive contacts 220, the pins 140 may be configured to have a profile that matches the profile of the receptacles 211, taking into account the fact that the pins 140 may be inserted at a different angle or offset in different applications. The arrangement better avoids the problem that the contact pin deviates from the conductive contact, and improves the reliability of the conductive connection of the contact switch. For example, the contact pin can still ensure the close contact of the contact pin and the conductive contact under the severe conditions of vibration and the like of the elevator; the problem of switch disconnection caused by accidents is avoided.

It will be appreciated by those skilled in the art that the conductive contacts described herein should have a profile that matches that of the receptacle, and it is not intended that the two have identical profiles, but rather that the pins in a normal application scenario can contact the conductive contacts in such an arrangement after entering the housing through the receptacle in such an arrangement. As one specific example, the profile of the conductive contact may be made greater than or equal to the profile of the receptacle, and at this time, the pin may contact the conductive contact when inserted into the receptacle at an angle relatively perpendicular or slightly inclined; of course, as another example, the profile of the conductive contact could also be made slightly smaller than the profile of the receptacle, but it should be noted that this reduced dimension should still be smaller than the diameter of the pin, in which case the pin, when inserted into the receptacle at a relatively vertical or slightly inclined angle, could also substantially contact the conductive contact; as a further example, the projection of the outline of the conductive contact in the direction towards the jack covers the outline of the jack, such an arrangement further improves the arrangement position of the conductive contact, so that the size of the conductive contact in the insertion direction of the pin can completely correspond to or even be larger than the jack, thereby not only ensuring the reliability of the contact between the inserted pin and the conductive contact, but also ensuring the practicability of the design area of the conductive contact; as a further example, the receptacle and the conductive contact may be configured as rounded rectangles, which may also ensure the connection stability of the two, and such receptacle shapes are easier to machine.

Similarly, also for improving the good alignment and contact between the electrical contact of the metal dome and the pin after a huge amount of switching (for example, 100 ten thousand switching), the surface of the conductive contact 220 contacting the pin 140 can be configured to have an inwardly concave profile so as to guide the pin 140 to a certain extent and avoid slipping out.

In addition, the conductive pin 140 and the conductive contact 220 can be made of silver alloy to improve the conductivity, while the other parts of the pin 140 and the metal spring can be made of beryllium copper alloy to reduce the cost and improve the resilience.

It should also be appreciated that the switch plugs, contact switches and other parts of the elevator system of the contact switches provided according to the present application can be designed, manufactured and sold separately or they can be assembled and sold as a whole. Whether formed as a monomer before combination or as a whole after combination, are within the scope of the present application.

Further, although not shown, an embodiment of an elevator system is provided herein. The elevator system comprises the contact switch in any of the above embodiments or combination thereof, so that various effects brought by the contact switch are also provided, and further description is omitted. The following will focus on the arrangement position in the elevator system and the technical effects additionally brought about when it is applied in the elevator system.

The elevator system includes: an elevator car with a car door and landing doors arranged in a lobby of each floor of the building. Wherein, the top of landing door is provided with landing door upper sill, and landing door upper sill realizes the linkage of landing door and car door with the cooperation of door sword mechanism, also the switching of car door will drive the landing door switching simultaneously promptly. In addition, the elevator system also has a landing door lock including a door lock body and a door lock hook. This configuration is one example of the location of the installation of the contact switch in the elevator system. Specifically, the switch plug 100 of the contact switch is mounted on the door lock hook, and the switch receptacle 200 is mounted on the door lock body. In the mounted state, the longitudinal direction of the housing 210 of the switch receptacle 200 extends along the opening and closing direction of the landing door. At this time, in the linkage closing process of the landing door, the door lock hook drives the switch plug 100 to be rotatably inserted into the switch socket 200 on the door lock body.

In this arrangement, in conjunction with the application scenario of the elevator landing door, the switch plug 100 of the contact switch will be inserted into the switch socket 200 in a rotating manner and will conduct. At this time, when the switch plug 100 is rotated to just contact the switch socket 200, the pin 140 can be swung with respect to the sleeve 120, thereby achieving alignment with respect to the conductive contact 220, and thereby accomplishing stable contact and conduction of the both thereafter. With the increase of the on-off times of the switch, the elasticity of the elastic element is reduced, so that the contact position of the contact pin and the conductive contact 220 may be changed, but since the contact pin 140 can swing relative to the sleeve 120 to provide self-adaption and compensation, the contact switch is ensured to still maintain good contact and high reliability in an elevator system with a high-off application scene.

The construction of the contact switch and its connections modified to accommodate the elevator system will now be described. In addition, for further improvement of reliability, practicability, economy or other aspects, additional parts may be added, as also exemplified below.

For example, in the foregoing application scenario, the pins 140 are also modified from various angles to ensure that they contact the conductive contacts 220 after entering the receptacle via the receptacles in various circumstances. For example, the movement trace of the door lock hook of the elevator system can be obtained by testing or pre-debugging the movement of the door lock hook relative to the door lock main body, and a section in which the contact pin 140 is caused to contact with the conductive contact 220 is intercepted, so that after the installation and positioning of the switch socket and the switch plug in the elevator system are completed, the conductive contact 220 can cover the trace of the swinging of the contact pin 140 relative to the sleeve 120.

The corresponding movement of the opening contact switch with the opening and closing of the landing door will be described below in connection with the embodiments of the elevator system described before. When the elevator car reaches the target floor, the related car door and landing door are opened, and after passengers get in and out, the related car door and landing door are ready to be closed. During the closing process of the landing door, the switch plug 100 and the door lock hook of the contact switch are gradually and clockwise rotated and inserted into the switch socket 200 on the door lock body along with the closing of the landing door until the contact plug contacts with the conductive contact 220 therein, and at this time, the contact pin 140 on the switch plug 100 can swing relative to the sleeve 120, thereby realizing the self-adaptive alignment of the contact pin 140 with respect to the conductive contact 220. As the landing door continues to close, the pins 140, driven by the latch hooks, will begin to press against the conductive contacts 220 in the switch receptacle 100 on the latch body, forcing themselves to deform due to the reactive force, forcing the coil spring 130 backwards. Until the landing door is completely closed, the pin 140 stops rotating and the deformation of the coil spring 130 is completed, so that the two are electrically connected.

The above examples mainly describe the switch plug for a contact switch of an elevator, the contact switch and the elevator system of the present application. Although only a few embodiments of the present application have been described, those skilled in the art will appreciate that the present application may be embodied in many other forms without departing from the spirit or scope thereof. Accordingly, the present examples and embodiments are to be considered as illustrative and not restrictive, and various modifications and substitutions may be made therein without departing from the spirit and scope of the present application as defined in the appended claims.

Claims (19)

1. A switch plug for a contact switch of an elevator, comprising:

mounting a base;

at least two sleeves mounted on the mounting base, respectively, each of the sleeves having a first opening distal from the mounting base;

at least two elastic elements, each elastic element being mounted within each sleeve;

the at least two contact pins are electrically connected through the mounting base; each contact pin is provided with a first section and a second section respectively, the first section is limited in the sleeve, and the second section is pressed by the elastic element to extend out of the first opening of the sleeve; wherein the second section is capable of oscillating relative to the sleeve.

2. The switch plug of claim 1, wherein the mounting base comprises:

an insulating base body; and

a conductive plate disposed in the insulating housing and connected to each of the sleeves;

wherein each of the pins is electrically connected to the conductive plate through each of the sleeves.

3. The switch plug of claim 2, wherein said insulative housing comprises: the insulating top shell is provided with an opening; wherein the conductive plate is disposed between the insulating bottom case and the insulating top case, and each of the sleeves is connected to the conductive plate through the opening.

4. The switch plug according to claim 2, wherein each of the sleeves has a second opening adjacent to the mounting base, and the second opening of each of the sleeves is fixedly connected to the conductive plate via a conductive bolt.

5. The switch plug according to any one of claims 1 to 4, wherein the second section is configured to extend in a length direction of the sleeve and has a dimension in a width direction of the sleeve smaller than the first opening; the first section is configured to radially extend around the second section to protrude, and has a dimension in a width direction of the sleeve larger than the first opening.

6. The switch plug of claim 5, wherein an outer periphery of the first section has a guide curve that facilitates oscillation of the second section relative to the sleeve.

7. The switch plug of claim 5, wherein the second section is configured as a cylindrical section and the first section is configured as a protruding disk section extending radially around the second section.

8. The switch plug of claim 5, wherein the first section is disposed at an end of the second section and the first section has a counterbore for receiving an end of the resilient element.

9. The switch plug according to any one of claims 1 to 4, wherein an end of each of said pins has a cambered section.

10. The switch plug according to any one of claims 1 to 4, wherein said resilient element presses the first section of said pin against the first opening of said sleeve.

11. The switch plug according to any one of claims 1 to 4, wherein the resilient element is configured as a coil spring.

12. A contact switch for an elevator, comprising:

a switch plug according to any one of claims 1 to 11; and

a switch receptacle, comprising:

the shell is provided with at least two jacks; and

at least two conductive contacts disposed within the housing, each of the conductive contacts being disposed proximate to each of the jacks;

in an operating state, each contact pin of the switch plug penetrates each jack and contacts each conductive contact.

13. The contact switch of claim 12, wherein: each of the conductive contacts is arranged along a length direction of the housing.

14. The contact switch of claim 13, wherein the housing includes a front cover and a rear cover; the installation bolt penetrates through the front cover and the rear cover from two sides of the conductive contact and extends and protrudes from the rear cover to be used for fixedly installing the contact switch to an elevator system.

15. The contact switch of claim 12, further comprising at least two bent conductive pieces, wherein each conductive contact is disposed on a first bend of each bent conductive piece, and a mounting hole is disposed on a second bend of each bent conductive piece, and each bent conductive piece is fastened to the housing by passing a conductive bolt through the mounting hole.

16. The contact switch of claim 12, wherein each of said conductive contacts has a profile that matches each of said receptacles.

17. The contact switch of claim 12, wherein each of said conductive contacts has an inwardly concave profile at a surface for contacting each of said pins.

18. An elevator system, comprising:

an elevator car having a car door;

a landing door that is linked with the car door;

a landing door lock having a door lock body and a door lock latch hook; and

a contact switch according to any one of claims 12 to 17;

the switch plug of the contact switch is installed on the door lock hook, the switch socket is installed on the door lock main body, and the length direction of the shell of the switch socket extends along the opening and closing direction of the landing door; in the closing process of the landing door, the door lock hook drives the switch plug to be rotatably inserted into the switch socket on the door lock main body.

19. The elevator system of claim 18, wherein the conductive contact covers a trace of the pin that oscillates relative to the sleeve.

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