A plug and door contact switch

Abstract

The application discloses a plug used for cooperating with a socket assembly of a door contact switch to realize closing and opening actions, which comprises a fixed plate and two terminals fixed on the fixed plate and electrically connected with each other, and the connection lines at the ends of the two terminals are obliquely connected with the back surface of the fixed plate away from the terminals; and the application further discloses a door contact switch. In the application, the plug is used for the door contact switch, so that the terminal ends are always in contact with and separated from the working part at the same time, the differential wear of the working part and the occurrence of current arc are avoided, and the service life of the door contact switch is prolonged.

Description

[0001] This invention is a divisional application filed on September 8, 2017, with application number 201710805737.4 and invention title: A plug and door contact switch. Technical Field

[0002] This invention relates to a contact switch, and more particularly to a plug for a door contact switch for an elevator door device. Background Technology

[0003] In existing technology, door contact switches are typically used to control the opening and closing of elevator doors, or to control the elevator's stopping or starting between floors. A door contact switch has a spring plate with metal contacts on it. When the door is closed, a plug is inserted into the door contact switch socket, causing the two contacts to conduct, and the elevator control system controls the elevator car to begin rising or falling. When the door is open, the two contacts disengage, and the elevator control system keeps the elevator car stationary at the corresponding floor.

[0004] In the prior art, the two contacts are located in the same plane, and the plug is fixed on a swing arm that can swing around a pivot. During the locking process, the plug swings around the pivot to insert. When the operating head contacts the contacts, the two contacts cannot make contact at the same time, which makes the surface of the contact that contacts first wear more. The contact that contacts later will cause arcing due to the inherent characteristics of the current. Over time, the contacts and the surrounding area will turn black. The lifespan of the two contacts will be reduced due to different reasons (arcing and large amount of wear). Summary of the Invention

[0005] In view of this, the object of the present invention is to provide a plug having a longer service life for door contact switches.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A plug for engaging with a socket assembly of a door contact switch to perform closing and opening actions, the plug including a mounting plate and two electrically connected connectors fixed to the mounting plate, the connecting line of the ends of the two connectors being obliquely intersecting the back of the mounting plate away from the connectors.

[0008] The fixing plate is fixed to one end of the swing arm that can swing around a rotation axis along its length. The rotation axis is located at the other end of the swing arm along its length. The back side is parallel to the length direction of the swing arm. At this time, the line connecting the ends of the two connectors is oblique to the length direction of the swing arm.

[0009] Preferably, the socket assembly includes a housing with a socket and a working part disposed inside the housing. During the process of the plug closing with the socket assembly, the connector is inserted into the socket, and the ends of the two connectors simultaneously abut against the working part. During the process of the plug disconnecting from the socket assembly, the ends of the connectors simultaneously separate from the working part and exit the socket.

[0010] In practical applications, by controlling the height difference between the two connectors, the connectors in different projects are always in contact with and separated from the working part at the same time, which avoids differential wear of the working part and current arcing, and extends the service life of the door contact switch.

[0011] The interior of the housing is divided into a left chamber and a right chamber, and each of the left and right chambers is provided with two metal springs; the two metal springs are arranged symmetrically or in the same direction, the working part is a metal contact provided at one end of the metal spring, and the other end of the metal spring is fixed to the housing by a base made of conductive metal material; the metal spring is U-shaped or V-shaped.

[0012] More preferably, the two joints protrude from the fixing plate at different or the same height.

[0013] More preferably, the plug includes a fixing part, a connecting part rotatably connected to the fixing part about a pivot, and a limiting component, the limiting component being used to limit the relative position between the fixing part and the connecting part, and the connector being fixedly connected to the connecting part.

[0014] More preferably, the fixing part includes a bottom wall of the fixing part and two side walls of the fixing part fixed on the bottom wall of the fixing part and arranged opposite to each other, and the side of the bottom wall of the fixing part away from the side walls of the fixing part constitutes the back side.

[0015] More preferably, the connecting part includes a bottom wall of the connecting part and two side walls of the connecting part fixed on the bottom wall of the connecting part and arranged opposite to each other. The connector is fixedly connected to the side of the bottom wall of the connecting part away from the side walls of the connecting part, and the side walls of the connecting part and the side walls of the fixed part are rotatably connected around the rotating shaft.

[0016] More preferably, the two sidewalls of the fixing part and the two sidewalls of the connecting part are all in the shape of an isosceles triangle, and the pivot is located near the vertex of the isosceles triangle.

[0017] More preferably, the limiting component includes a limiting pin.

[0018] More preferably, the limiting component further includes insertion holes respectively formed on the fixing part and / or the connecting part for the limiting pin to pass through.

[0019] There can be one or more limiting pins, and there can also be one or more sockets, to meet the needs of different projects.

[0020] More preferably, the limiting component further includes an elastic element disposed between the fixing portion and the connecting portion.

[0021] More preferably, the elastic element is a torsion spring sleeved on the rotating shaft.

[0022] The present invention also discloses a door contact switch, including any of the plugs described above.

[0023] The present invention has the following technical advantages:

[0024] In this invention, the plug is used for the door contact switch, ensuring that the connector end always contacts and separates from the working part simultaneously. This avoids differential wear of the working part and current arcing, extending the service life of the door contact switch. Furthermore, for mass production of the door contact switch socket assembly, only the plug needs to be differentiated to meet the requirements of different projects. This modular production and assembly of the door contact switch greatly improves production efficiency.

[0025] Meanwhile, the use of a movable part and a fixed part that rotate and connect to each other allows for flexible installation of the plug. It also allows the plug in the prior art to be directly fixed to the movable part, thus upgrading the door contact switch in the prior art. Attached Figure Description

[0026] Figure 1 This is a perspective view of the plug according to Embodiment 1 of the present invention;

[0027] Figure 2 This is a schematic diagram of the closed state structure of the plug and socket assembly according to Embodiment 1 of the present invention;

[0028] Figure 3 This is a side view of the plug according to Embodiment 1 of the present invention;

[0029] Figure 4 This is a front view of the plug according to Embodiment 2 of the present invention.

[0030] In the attached diagram: 1-connector; 2-connecting part; 21-bottom wall of connecting part; 22-side wall of connecting part; 3-fixing part; 31-bottom wall of fixing part; 32-side wall of fixing part; 33-back side; 321-socket hole; 4-limiting pin; 5-rotating shaft; 6-fixing plate; 7-torsion spring; 8-socket assembly; 81-working part. Detailed Implementation

[0031] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Example 1

[0032] like Figure 1-3 As shown, this embodiment is a plug for cooperating with the socket assembly 8 of a door contact switch to perform closing and opening actions. The plug includes a fixing plate 6 and two connectors 1 that are electrically connected to each other and fixed on the fixing plate 6. The line connecting the ends of the two connectors 1 is obliquely intersecting the back side 33 of the fixing plate 6 away from the connectors 1.

[0033] The socket assembly 8 includes a housing with a socket and a working part 81 disposed inside the housing. During the process of closing the plug and the socket assembly 8, the connector 1 is inserted into the socket, and the ends of the two connectors 1 simultaneously abut against the working part 81. During the process of disconnecting the plug and the socket assembly 8, the ends of the connectors 1 simultaneously separate from the working part 81 and exit the socket.

[0034] In this embodiment, the two connectors 1 protrude from the fixing plate 6 at the same height. The plug includes a fixing part 3, a connecting part 2 rotatably connected to the fixing part 3 around a pivot 5, and a limiting component. The limiting component is used to limit the relative position between the fixing part 3 and the connecting part 2. The fixing part 3 includes a bottom wall 31 and two oppositely arranged side walls 32 fixed to the bottom wall 31. The side of the bottom wall 31 away from the side walls 32 forms the back surface 33. The connecting part 2 includes a bottom wall 21 and two oppositely arranged side walls 22 fixed to the bottom wall 21. The connector 1 is fixedly connected to the side of the bottom wall 21 away from the side walls 22. The side walls 22 and the fixing side walls 32 are rotatably connected around the pivot 5. Specifically, in the prior art, the connector 1 is fixedly connected to a rectangular plate, and the plate is bolted to the side of the bottom wall 21 away from the side walls 22, which facilitates upgrading and improving the prior art. In this embodiment, the two fixed sidewalls 32 and the two connecting sidewalls 22 are all isosceles triangles, and the pivot 5 is located near the vertex of the isosceles triangle.

[0035] The limiting component includes a limiting pin 4, an elastic element, and an insertion hole 321 on the fixed part 3 for the limiting pin 4 to pass through. The elastic element is a torsion spring 7 sleeved on the rotating shaft 5. The two abutting ends of the torsion spring 7 abut against the bottom wall 31 of the fixed part and the bottom wall 21 of the connecting part respectively under the action of the elastic force of the torsion spring 7. The bottom wall 21 of the connecting part abuts against the limiting pin 4 under the action of the elastic force of the torsion spring 7.

[0036] In this embodiment, the limiting pin 4 is inserted into the insertion hole 321 on the side wall 32 of the fixing part. Each side wall 32 of the fixing part has two insertion holes 321 to meet the needs of different projects. Example 2

[0037] like Figure 4As shown, this embodiment is a plug for cooperating with the socket assembly 8 of a door contact switch to perform closing and opening actions. The plug includes a fixing plate 6 and two connectors 1 that are electrically connected to each other and fixed on the fixing plate 6. The line connecting the ends of the two connectors 1 is obliquely intersecting the back side 33 of the fixing plate 6 away from the connectors 1.

[0038] The socket assembly 8 includes a housing with a socket and a working part 81 disposed inside the housing. During the process of closing the plug and the socket assembly 8, the connector 1 is inserted into the socket, and the ends of the two connectors 1 simultaneously abut against the working part 81. During the process of disconnecting the plug and the socket assembly 8, the ends of the connectors 1 simultaneously separate from the working part 81 and exit the socket.

[0039] The two connectors 1 protrude from the fixing plate 6 at the same height. The plug includes a fixing part 3, a connecting part 2 rotatably connected to the fixing part 3 around a pivot 5, and a limiting component. The limiting component is used to limit the relative position between the fixing part 3 and the connecting part 2. The fixing part 3 includes a bottom wall 31 and two oppositely arranged side walls 32 fixed to the bottom wall 31. The side of the bottom wall 31 away from the side walls 32 forms the back surface 33. The connecting part 2 includes a bottom wall 21 and two oppositely arranged side walls 22 fixed to the bottom wall 21. The connector 1 is fixedly connected to the side of the bottom wall 21 away from the side walls 22. The side walls 22 and the side walls 32 are rotatably connected to each other around the pivot 5. Specifically, in the prior art, the connector 1 is fixedly connected to a rectangular plate, and the plate is bolted to the side of the bottom wall 21 away from the side walls 22, which facilitates upgrading and improving the prior art. In this embodiment, the two fixed sidewalls 32 and the two connecting sidewalls 22 are all isosceles triangles, and the pivot 5 is located near the vertex of the isosceles triangle.

[0040] Unlike Embodiment 1, the limiting component in this embodiment includes a limiting pin 4 and insertion holes 321 formed on the fixing part 3 for the limiting pin 4 to pass through. The insertion holes 321 are arranged on both sides of the rotating shaft 5, and the bottom wall 21 of the connecting part abuts against the limiting pins 4 arranged on both sides of the rotating shaft 5. The limiting pin 4 can also be fixedly set on the side wall 32 of the fixing part, with two insertion holes 321 formed on each side wall 32 of the fixing part to meet the needs of different projects.

[0041] In this invention, the plug is used for a door contact switch, ensuring that the connector end always contacts and separates from the working part simultaneously. This avoids differential wear and current arcing of the working part, extending the service life of the door contact switch. Furthermore, for mass production of door contact switch socket assemblies, only the plug needs to be differentiated to meet the requirements of different projects. This modular production and assembly of the door contact switch greatly improves production efficiency. The use of mutually rotating movable and fixed parts allows for flexible plug placement and enables the direct fixing of existing plugs to the movable part, thus upgrading existing door contact switches.

[0042] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A plug for engaging with a socket assembly of a door contact switch to perform closing and opening actions, the socket assembly comprising a housing having a socket opening and a working part disposed inside the housing, characterized in that: The plug includes a fixing part, a connecting part rotatably connected to the fixing part about a pivot, and a limiting component. The limiting component is used to limit the relative position between the fixing part and the connecting part, and the connector is fixedly connected to the connecting part. The fixing part includes a bottom wall of the fixing part and two side walls of the fixing part fixed on the bottom wall of the fixing part and arranged opposite to each other. The side of the bottom wall of the fixing part away from the side walls of the fixing part constitutes the back side. The connecting part includes a bottom wall of the connecting part and two side walls of the connecting part fixed on the bottom wall of the connecting part and arranged opposite to each other. The connector is fixedly connected to the side of the bottom wall of the connecting part away from the side walls of the connecting part. The side walls of the connecting part and the side walls of the fixed part are rotatably connected around the rotating shaft. The line connecting the ends of the two connectors is obliquely intersecting the back side, so that the ends of the connectors are always in contact with and separated from the working part simultaneously.

2. The plug according to claim 1, characterized in that: The two joints protrude from the bottom wall of the connecting part at the same height.

3. The plug according to claim 1, characterized in that: The limiting component includes a limiting pin.

4. The plug according to claim 3, characterized in that: The limiting component also includes an elastic element disposed between the fixing part and the connecting part.

5. The plug according to claim 4, characterized in that: The elastic element is a torsion spring sleeved on the rotating shaft.

6. The plug according to claim 1, characterized in that: During the closing process of the plug and the socket assembly, the connector is inserted into the socket, and the ends of the two connectors simultaneously abut against the working part; During the process of disconnecting the plug from the socket assembly, the ends of the connectors simultaneously separate from the working parts and exit the socket.

7. A door contact switch, characterized in that: Includes the plug as described in any one of claims 1-6.

Images