A combined elevator door contact switch device

Abstract

This invention provides a combined elevator door contact switch device, belonging to the field of elevator equipment technology. The invention includes a socket, a contact pin, and a plug. The socket is internally divided into a front chamber and a rear chamber. The front chamber is further divided into a first chamber and a second chamber by an insulating partition. A first spring is disposed inside the first chamber, with one end fixed by a first wiring bolt. A second spring is disposed inside the second chamber, with one end fixed by a second wiring bolt. A first preload limiting block is disposed below the second wiring bolt, contacting and connecting with the second spring. A third spring is disposed inside the rear chamber, with the middle of the third spring fixed by the second preload limiting block. The other end extends above a fourth opening and is fixedly connected to a fourth contact point. This invention prevents poor contact during switching and avoids significant spring bouncing.

Description

Technical Field

[0001] This invention relates to a combined elevator door contact switch device, belonging to the field of elevator equipment technology. Background Technology

[0002] Currently in the elevator industry, contact-type door switches, which electrically verify the door's position and lock status, employ pin-and-socket switch structures and contact-and-base door lock switch structures. Both of these switch structures are single-unit structures: the pin-and-socket switch consists of one pin and one socket, while the door lock switch consists of one contact and one base. Therefore, at least two installation locations are required, which not only wastes installation space and makes installation inconvenient but also complicates wiring. Furthermore, most existing contact-type door lock switch structures are outdated and do not meet the IP2X protection level required by the new national standard. Additionally, if the spring contacts in these switches lack pre-compression, they will lack initial elasticity, resulting in minimal spring force released during a fixed travel. This can easily lead to poor contact. Moreover, when the plug disconnects from the contacts on the spring contacts, the lack of pre-compression can cause significant spring bounce, potentially leading to secondary conduction and posing a significant safety hazard to the elevator. Contact-type door lock switches are also prone to dust accumulation. Excessive dust accumulation under the spring contacts can, at best, affect the downward travel of the spring contacts, and at worst, damage the contacts, causing the elevator to stop operating. Summary of the Invention

[0003] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a combined elevator door contact switch device to solve the problems of poor contact and dust accumulation affecting the function of existing door contact switch devices.

[0004] To achieve the above and other related objectives, the present invention provides a combined elevator door contact switch device, characterized in that it comprises:

[0005] The socket has an internal structure divided into a front chamber and a rear chamber. The front chamber is further divided into a first chamber and a second chamber by an insulating partition.

[0006] The first chamber is provided with a first spring contact, and one end of the socket is provided with a first opening that communicates with the first chamber. One end of the first spring contact is fixed by a first wiring bolt, and the other end extends to the first opening and is fixedly connected to a first contact.

[0007] The second chamber is provided with a second spring piece. The bottom and side of the socket are respectively provided with a second opening and a first socket that communicate with the second chamber. One end of the second spring piece is fixed by a second wiring bolt, and a first pre-compression limiting block that abuts against and connects to the second spring piece is provided below the second wiring bolt. The other end of the second spring piece extends to the top of the second opening and is fixedly connected with a second contact point.

[0008] The rear chamber is provided with a third spring piece. The bottom and side of the socket are respectively provided with a third opening, a fourth opening and a second insertion hole that connect to the rear chamber. The third spring piece is fixed in the middle by a second pre-pressure limiting block. One end of the third spring piece extends to the third opening and is fixedly connected to a third contact point. The other end extends to the top of the fourth opening and is fixedly connected to a fourth contact point.

[0009] The contact pin that mates with the first and third openings on the socket includes a cover, two protective seats symmetrically arranged in the middle of the cover, and a U-shaped pin fixedly connected to the end of the protective seat;

[0010] A plug that mates with the first and second sockets on a socket, the plug including a mounting base, with two symmetrically arranged connecting portions at one end of the mounting base, and guide plates provided on the bottom surface of each connecting portion. In one embodiment of the present invention, the first spring piece is fixed in the middle by a first limiting post.

[0011] In one embodiment of the present invention, a first limiting block is provided at the inner edge of the first opening to limit the first spring piece.

[0012] In one embodiment of the present invention, the third spring sheet is fixed at the middle of one end near the third opening by a second limiting post.

[0013] In one embodiment of the present invention, a second limiting block is provided at the inner edge of the third opening to limit the third spring piece.

[0014] In one embodiment of the present invention, a first through hole and a second through hole are provided on the lower front side of the socket.

[0015] In one embodiment of the present invention, a third through hole and a fourth through hole are provided on the lower back of the socket.

[0016] In one embodiment of the present invention, a plurality of reinforcing ribs are provided circumferentially on the protective seat of the stylus.

[0017] As described above, the combined elevator door contact switch device of the present invention has the following beneficial effects:

[0018] This invention employs a composite switch structure, resulting in a compact design, convenient installation, and the realization of all the functions of existing pin switches and door lock switches. It can achieve all existing switch contact methods, meeting the functional requirements for electrically verifying the door's position and lock status. The circuitry is optimized for enhanced safety. Due to the pre-pressure limiting block, the spring has a large initial elastic force, preventing poor contact and significant spring bouncing, thus eliminating potential elevator hazards. Furthermore, openings have been made to the parts of the new combination switch prone to dust accumulation, preventing damage from dust buildup. Attached Figure Description

[0019] Figure 1 The diagram shown is an overall structural schematic of a combined elevator door contact switch device according to an embodiment of the present invention.

[0020] Figure 2 The diagram shown is a schematic diagram of the internal structure of the socket of a combined elevator door contact switch device according to an embodiment of the present invention.

[0021] Figure 3 The diagram shown is a schematic representation of the internal structure of the back of a socket in a combined elevator door contact switch device according to an embodiment of the present invention.

[0022] Figure 4 The diagram shown is a schematic diagram of the contact pin structure of a combined elevator door contact switch device according to an embodiment of the present invention.

[0023] Figure 5 The diagram shown is a schematic diagram of the plug structure of a combined elevator door contact switch device according to an embodiment of the present invention.

[0024] Among them, 1 is a socket; 101 is a first chamber; 102 is a first opening; 103 is a first contact; 104 is a first limiting block; 105 is a first spring; 106 is a first limiting post; 107 is a first through hole; 108 is a second through hole; 109 is a second opening; 110 is a second chamber; 111 is a first socket; 112 is a second contact; 113 is a second spring; 114 is a first pre-load limiting block; 115 is a second wiring bolt; and 116 is a first wiring bolt. 117. Rear chamber; 118. Third contact; 119. Third opening; 120. Second limiting block; 121. Second limiting post; 122. Third through hole; 123. Fourth through hole; 124. Third spring; 125. Fourth opening; 126. Fourth contact; 127. Second insertion hole; 128. Second pre-compression limiting block; 2. Contact pin; 21. Protective seat; 22. Protective cover; 23. Reinforcing rib; 24. U-shaped pin; 3. Plug; 31. Mounting base; 32. Guide plate. Detailed Implementation

[0025] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0026] Please see Figures 1 to 5 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding and reading. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0027] Please see Figures 1 to 5This invention provides a combined elevator door contact switch device, comprising three parts: a socket 1, a contact pin 2, and a plug 3. The socket 1 is a combined structure. A first chamber 101 and a second chamber 110 are provided on the front side of the socket 1, with an insulating baffle separating the first chamber 101 and the second chamber 110. A first opening 102 is provided in the first chamber 101 corresponding to the pin position of the contact pin 2. A first spring 105 is provided in the first chamber 101. A first contact 103 is provided at one end of the first spring 105, and a first wiring bolt 116 is connected to the other end of the first spring 105. A nut is connected to the screw of the first wiring bolt 116, and the nut is engaged in a groove in the housing. The first wiring bolt 116... A wiring opening is provided at the location of the housing. A first limiting block 104 is provided on the outer side of the first spring contact 105 in the first chamber 101, and a first limiting post 106 is provided on the inner side of the first spring contact 105 in the first chamber 101. A first socket 111 is provided in the second chamber 110 corresponding to the position of the plug pin 3. A second spring contact 113 is provided in the second chamber 110. A second contact 112 is provided at one end of the second spring contact 113, and a second wiring bolt 115 is connected to the other end of the second spring contact 113. A nut is connected to the screw of the second wiring bolt 115, and the nut is engaged in a slot in the housing. A wiring opening is provided at the location of the second wiring bolt 115 corresponding to the position of the housing. A first pre-compression limiting block 114 is provided on the upper side of the socket 1, which is fixed relative to the housing. The second spring 113 is in contact with the pre-compression limiting block 114 in the initial state. A second opening 109 is provided on the lower side of the second chamber 110. A first through hole 107 and a second through hole 108 are provided on the front of the socket 1. The first through hole 107 and the second through hole 108 are respectively separated from the two chambers by insulating baffles. A rear chamber 117 is provided on the back of the socket 1. A third opening 119 is provided in the rear chamber 117 corresponding to the position of the pin 2. A second socket 127 is provided in the rear chamber 117 corresponding to the position of the plug 3. A third spring 124 is provided in the rear chamber 117. The left end of the third spring 124 is connected to the first... The second spring 113 in the second chamber 110 is the same as the third spring 124. The right end of the third spring 124 is the same as the first spring 105 in the first chamber 101. The two ends of the third spring 124 are respectively provided with a fourth contact 126 and a third contact 118. The outer side of the third spring 124 in the rear chamber 117 is provided with a second limiting block 120. The inner side of the third spring 124 in the rear chamber 117 is provided with a second limiting post 121. The upper side of the third spring 124 in the rear chamber 117 is provided with a second pre-pressure limiting block 128. The second pre-pressure limiting block 128 is fixed relative to the shell. The third spring 124 is in contact with the second pre-pressure limiting block 128 in the initial state. The lower right side of the rear chamber 117 has a fourth opening 125.The socket 1 has a third through hole 122 and a fourth through hole 123 on its rear side. The third through hole 122 and the fourth through hole 123 are respectively separated from the rear cavity 117 by insulating baffles. The third through hole 122 is connected to the first through hole 107, and the fourth through hole 123 is connected to the second through hole 108. The pin 2 is provided with a protective seat 21, a protective cover 22 and a U-shaped pin 24. After the U-shaped pin 24 is inserted into the protective seat 21, it cooperates with the protective cover 22. The protective seat 21, the protective cover 22 and the U-shaped pin 24 are tightly fitted without any shaking. The plug 3 is provided with a mounting base 31 and a guide plate 32. The mounting base 31 and the guide plate 32 are tightly fitted without any looseness. The three chambers on socket 1 are independent chambers, separated by insulating baffles; the first pre-compression limiting block 114 compresses the second spring 113 in the initial state, providing a large initial elastic force to the second spring 113; the first pre-compression limiting block 114 is part of the housing, or it can be a separate shape fixed to the housing; the first opening 102 is a circular superimposed rectangular hole; the first socket 111 is an opening formed by two rectangular holes connected end to end; the second contact 112 is one or more contacts; the second pre-compression limiting block 128 compresses the left section of the third spring 124 in the initial state, forming the third spring 124 The left section provides a larger initial elastic force; the second preload limiting block 128 is part of the housing, or it can be a separate object of other shapes fixed to the housing; the left section of the third spring 124 and the second spring 113 are on the same plane under the action of the second preload limiting block 128 and the first preload limiting block 114; the third opening 119 is a circular superimposed rectangular hole; the second insertion hole 127 is an opening formed by two rectangular holes connected end to end; the fourth contact 126 is one or more contacts; the second contact 112 and the fourth contact 126 are... The working surface is either curved or flat; the third spring piece 124 is a single integral spring piece or a multi-segment composite spring piece; the first through hole 107, the second through hole 108, the third through hole 122, and the fourth through hole 123 are figure-eight shaped holes, or other shapes; the pin 2 is provided with reinforcing ribs 23; the U-shaped pin 24 is a round pin or a square pin; the working surface of the guide plate 32 is curved or flat; when the U-shaped pin 24 is a round pin, its working surface is curved or flat; the socket 1 can be rectangular, L-shaped, or other forms, and the rectangular or L-shaped state is unaffected by orientation, tilt, or rotation.

[0028] In summary, the composite switch structure of this invention is compact, easy to install, and achieves all the functions of existing pin switches and door lock switches. It can implement all existing switch contact methods, meeting the functional requirements of electrically verifying the door's position and lock status. The optimized circuitry enhances safety. Due to the pre-pressure limiting block, the spring has a large initial elastic force, preventing poor contact and significant spring bouncing, thus eliminating potential elevator hazards. Furthermore, openings have been made to the parts of the new combination switch prone to dust accumulation, preventing damage from dust buildup. Therefore, this invention effectively overcomes the various shortcomings of existing technologies and has high industrial applicability.

[0029] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A combined elevator door contact switch device, characterized in that, include: The socket (1) is divided into a front chamber and a rear chamber (117) inside. The front chamber is divided into a first chamber (101) and a second chamber (110) by an insulating partition. The first chamber (101) is provided with a first spring piece (105), and one end of the socket (1) is provided with a first opening (102) communicating with the first chamber (101). One end of the first spring piece (105) is fixed by a first wiring bolt (116), and the other end extends to the first opening (102) and is fixedly connected to a first contact point (103). The second chamber (110) is provided with a second spring (113). The bottom and side of the socket (1) are respectively provided with a second opening (109) and a first socket (11) communicating with the second chamber (110). One end of the second spring (113) is fixed by a second wiring bolt (115), and a first preload limiting block (114) is provided below the second wiring bolt (115) to abut against the second spring (113). The other end of the second spring (113) extends to the top of the second opening (109) and is fixedly connected with a second contact (112). The rear chamber (117) is provided with a third spring piece (124). The bottom and side of the socket (1) are respectively provided with a third opening (119), a fourth opening (125) and a second insertion hole (127) communicating with the rear chamber (117). The third spring piece (124) is fixed in the middle by a second pre-pressurization limiting block (128). One end of the third spring piece (124) extends to the third opening (119) and is fixedly connected to a third contact (118). The other end extends to the top of the fourth opening (125) and is fixedly connected to a fourth contact (126). The contact pin (2) is matched with the first opening (102) and the third opening (119) on the socket (1). The contact pin (2) includes a cover (22). Two protective seats (21) are symmetrically arranged in the middle of the cover (22). A U-shaped pin (24) is fixedly connected to the end of the protective seat (21). A plug (3) that mates with the first socket (111) and the second socket (127) on the socket (1). The plug (3) includes a mounting base (31). Two connecting parts are symmetrically arranged at one end of the mounting base (31). Guide plates (32) are provided on the bottom surface of the two connecting parts.

2. The combined elevator door contact switch device according to claim 1, characterized in that: The first spring piece (105) is fixed in the middle by the first limiting post (106).

3. The combined elevator door contact switch device according to claim 1, characterized in that: A first limiting block (104) is provided on the inner edge of the first opening (102) to limit the first spring piece (105).

4. The combined elevator door contact switch device according to claim 1, characterized in that: The third spring piece (124) is fixed at the middle of the end near the third opening (119) by the second limiting post (121).

5. A combined elevator door contact switch device according to claim 1, characterized in that: The inner edge of the third opening (119) is provided with a second limiting block (120) to limit the third spring piece (124).

6. The combined elevator door contact switch device according to claim 1, characterized in that: The socket (1) has a first through hole (107) and a second through hole (108) on the lower front side.

7. A combined elevator door contact switch device according to claim 1, characterized in that: The socket (1) has a third through hole (122) and a fourth through hole (123) on the lower back side.

8. A combined elevator door contact switch device according to claim 1, characterized in that: Several reinforcing ribs (23) are provided circumferentially on the protective seat (21) of the stylus (2).

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