CN218940176U

CN218940176U - Door contact switch and socket thereof

Info

Publication number: CN218940176U
Application number: CN202121041197.5U
Authority: CN
Inventors: 王辉
Original assignee: Bernstein Safe Solutions Taicang Co ltd
Current assignee: Bernstein Safe Solutions Taicang Co ltd
Priority date: 2021-05-14
Filing date: 2021-05-14
Publication date: 2023-04-28
Anticipated expiration: 2031-05-14
Also published as: WO2022237786A1

Abstract

The utility model discloses a door contact switch and a socket thereof. The socket of the door contact switch comprises a shell and a conducting strip arranged in the shell, wherein a contact for being in contact with a plug of the door contact switch is arranged at one end part of the conducting strip, a jack for the plug to be inserted into to be in contact with the contact of the conducting strip is also formed in the shell, the outline of the jack is provided with a plurality of outward convex expansion parts, adjacent expansion parts are connected through transition parts, the transition parts are straight lines or arc lines protruding outwards, the jack is provided with a geometric center, and the distance between the expansion parts and the geometric center is larger than the distance between the transition parts and the geometric center. The utility model can ensure that the plug rod is inserted into a larger matching space and is inserted correctly.

Description

Door contact switch and socket thereof

Technical Field

The utility model belongs to the field of door contact switches, relates to a door contact switch and a socket thereof, and in particular relates to a door contact switch of an elevator door and a socket thereof.

Background

The elevator safety door contact switch is mainly used for controlling the closing and opening of elevator car doors and elevator landing doors, and protecting the safety of elevator passengers and the normal operation of the elevator. The elevator door switch includes a plug and a socket capable of being plugged into each other, the plug having two plug pins capable of being plugged into the socket to engage contacts in the socket. Correspondingly, the socket is provided with a jack for inserting the inserting rod to reach the contact point, and the current jack is generally round or oval, but the jack is not easy to insert.

Disclosure of Invention

The utility model provides a door contact switch and a socket thereof, which can enable the plug and the rod to be inserted into a larger matching space and to be inserted correctly.

According to one aspect of the utility model, a socket of a door contact switch comprises a shell and a conductive sheet arranged in the shell, wherein a contact for being in contact with a plug of the door contact switch is arranged on one end part of the conductive sheet, a jack for being inserted by the plug to be in contact with the contact of the conductive sheet is also arranged on the shell, the outline of the jack is provided with a plurality of outward convex expansion parts, adjacent expansion parts are connected through transition parts, the transition parts are straight lines or arc lines protruding outwards, the jack is provided with a geometric center, and the distance between the expansion parts and the geometric center is larger than the distance between the transition parts and the geometric center.

Preferably, the flared portion is formed by an arc and has a curvature greater than the connecting portion.

Preferably, the transition is an arc, the curvature of the transition being less than the curvature of the flaring portion.

Preferably, the contour of the receptacle forms a centrally symmetric pattern about the geometric center.

Preferably, the number of the outer expansion parts is two and the outer expansion parts are arranged oppositely, and the two outer expansion parts are connected through two transition parts and enclose a closed contour.

More preferably, each of the flared portions spans the X-X direction and is mirror symmetrical with respect to the X-X direction.

More preferably, the number of the insertion holes is two, and a line connecting the geometric centers of the two insertion holes extends in the X-X direction.

More preferably, the transition is arcuate and both the transitions are symmetrical.

Preferably, the socket further comprises a conductive sheet arranged in the shell, a contact is arranged on the conductive sheet, and the jack is opposite to the contact.

According to another aspect of the utility model, a door contact switch comprises a socket and a plug, the socket being a socket as described above.

Compared with the prior art, the utility model has the following advantages:

the jack of the door contact switch and the plug thereof is a special-shaped hole, and the jack is provided with the outward convex outer expansion part so as to ensure that the insertion of the inserted link has a larger matching space, and the outer expansion parts are connected through straight lines or arc lines with larger curvature, so that the insertion of the inserted link is ensured to be correct, and the jack can be effectively contacted with the contact of the socket.

Drawings

In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a door contact switch according to an embodiment of the present utility model.

Fig. 2 is a schematic structural view of a socket according to an embodiment of the present utility model, in which an upper case is not shown.

Fig. 3 is a top view of a receptacle according to an embodiment of the present utility model, wherein the upper housing is not shown.

Fig. 4 is a schematic structural view of two conductive sheets in fig. 1.

Fig. 5 is a partial enlarged view at a in fig. 4.

Fig. 6 is a side view of the conductive sheet of fig.

Fig. 7 is a schematic structural view of an upper case of a socket according to an embodiment of the present utility model;

FIG. 8 is a schematic view of the inner surface of the upper shell of FIG. 7;

fig. 9 is a schematic diagram of one side of a receptacle according to an embodiment of the present utility model.

Fig. 10 is a schematic view of the left jack of fig. 9.

Wherein:

100-sockets;

1-a housing; 11-a lower shell; 111-jacks; 111 a-flaring portion; 111 b-transition; 111 c-geometric center; 112-wiring vias; 12-an upper shell; 120-pressing the through hole; 121-tongue; 122-snap;

2-conductive sheets; 21-contacts;

3-connectors; 31-body; 31 a-a threading hole; 32-wire clamping piece; 321-an introduction end; 322-clamping end; 323-stitch guide block; 324-space; 33-rivets;

4-a release;

200-plug; 201-plunger.

Detailed Description

Preferred embodiments of the present utility model will be described in detail below with reference to the attached drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art. The description of these embodiments is provided to assist understanding of the present utility model, but is not intended to limit the present utility model.

According to one embodiment of the utility model, a socket of a door contact switch, in particular an elevator door contact switch, and a door contact switch with such a socket are provided. Referring to fig. 1, the door contact switch includes a socket 100 and a plug 200 that are pluggable to each other. The plug 200 has two pins 201, and the socket 100 is provided with two insertion holes 111 which are matched with the pins 201, and the pins 201 can be inserted into the corresponding insertion holes 111.

Referring to fig. 2 to 9, the socket 100 includes a housing 1, a conductive sheet 2 provided in the housing 1, and a connector 3 provided in the housing 1 for connecting an external wire (which is not an integral part of the door contact switch, is connected to the socket only after being mounted on an elevator door, and is not shown in the drawings). A contact 21 for contact conduction with the plug rod 201 of the plug 200 is provided on one end portion of the conductive sheet 2, and the other end portion of the conductive sheet 2 is electrically connected to the connector 3. The conductive sheet 2 is a spring sheet with elasticity, which is made of conductive material such as metal or alloy by bending. The number of conductive strips 2 is two and symmetrically arranged to correspond to the two pins 201 of the plug 200. The contact 21 may be a conductive bump provided on one end of the conductive sheet 2, and when the plunger 201 is inserted, the end of the plunger 201 and the contact 21 are brought into contact with each other, thereby conducting each other. The connector 3 is used for realizing mechanical connection and electrical connection with an external lead, and transmitting an electric signal through the external lead (such as a signal wire), for example, transmitting the electric signal to a control system of the elevator door; when the plug rod 201 of the plug 200 is inserted into the socket 100 and is abutted against the contact 21, the electric signal is triggered to be generated, and the electric signal is transmitted to the control system through an external lead, so that the elevator door can be controlled to be opened.

In this embodiment, the connecting piece 3 is disposed on the other end of the conductive sheet 2, and the two are electrically connected. The connecting member 3 is integrally formed of a conductive material, such as a metal sheet or an alloy sheet, by punching, cutting, or the like. As shown in fig. 5, the connector 3 includes a main body 31 and at least two wire clamps 32. The body 31 is arranged on the conductive sheet 2 and is communicated with the conductive sheet 2, and the body 31 is connected to the conductive sheet 2 through a rivet 33; the body 31 is formed with a threading hole 31a for the external connection wire to pass through between the wire clamping members 32, and the center line C of the threading hole 31a is the threading direction of the external connection wire. The threading hole 31a is formed by bending a metal sheet in a C shape, that is, the hole wall around the threading hole 31a is not completely closed but has a small gap. The number of the wire clamps 32 is two or three or four or more, and a space 324 for accommodating an external wire is defined between the wire clamps 32. The thread clamp 32 extends from the body 31 in the threading direction and has a leading-in end 321 connected to the body 31 and a clamping end 322 at a distance from the body 31. The socket 100 has an initial or maintenance state in which no external connection wire is connected, and in the initial or maintenance state, a distance between the clamping ends 322 of the at least two wire clamping members 32 is smaller than an outer diameter of the external connection wire, and the wire clamping members 32 have elasticity to allow the external connection wire to pass through between the clamping ends 322. The clamping end 322 is spread apart during wiring; when the external lead penetrates, the external lead is clamped between the clamping ends 322, so that the external lead is effectively prevented from loosening, and the risk of poor contact is reduced.

The distance between the leading-in ends 321 of the thread clamping members 32 is larger than the distance between the clamping ends 322, at least one of the thread clamping members 32 extends obliquely from the leading-in end 321 to the clamping end 322 in a manner gradually approaching the center line C of the threading hole 31a, and the center line C of the threading hole 31a can be mutually overlapped with the center line of the connected external lead. Thus, the space 324 enclosed by the wire clip 32 is generally pyramid-shaped or cone-shaped. Specifically, each thread clamp 32 extends obliquely from the leading-in end 321 to the clamping end 322 so as to gradually approach the center line C of the threading hole 31a, so that a regular pyramid-shaped space 324 having a gradually decreasing cross-sectional area is defined between the thread clamps 32. The wire clamping member 32 is obliquely arranged, so that the penetration of the external wire can be guided, and the external wire can conveniently approach and enter the clamping end 322.

The socket 100 further comprises a release member 4 which can be inserted between the wire clamping members 32 to spread the clamping ends 322 to release the external connection wire; when the wiring is wrong or the external wire needs to be maintained and replaced, the clamping end 322 of the wire clamping member is opened by operating the release member 4, and the external wire is pulled out to be separated from the connecting member 3. Further, the release member 4 is movably disposed on the housing 1 along a release direction, and forms an included angle between the release direction and the threading direction of greater than 0 and less than 180 degrees, preferably greater than 45 degrees and less than 135 degrees, and further greater than 60 degrees and less than 120 degrees; in particular, in this embodiment, the release direction and the threading direction are spatially perpendicular to each other.

The shell 1 mainly comprises an upper shell 12 and a lower shell 11, wherein the upper shell 12 is provided with a plurality of buckles 122, and the two are mutually clamped through the buckles 122. A space in which the conductive sheet 2 and the connector 3 are disposed is formed in the lower case 11, and the upper case 12 is covered on the lower case 11 to close the space. The conductive sheet 2 and the connector 3 are located between the upper case 12 and the lower case 11. The upper case 12 includes a body 31 provided with a pressing through hole 120 and a tongue 121 positioned in the pressing through hole 120 for pressing, and a part of the tongue 121 is connected with the body 31 and forms an elastically deformable weak portion at the connection of the two. The release member 4 is provided on the inner surface of the tongue 121 and extends downward in the release direction. The release member 4 is specifically a protrusion formed on the inner surface of the tongue 121, and the protrusion is shaped like a wedge or trapezoid that fits in the space surrounded by the clip 32 in a bottom or top view. Further, the upper case 12 is integrally injection molded of an insulating material such as plastic, and the tongue piece 121 has a pressing portion located in the pressing through hole 120 and a connection end connected to the wall of the pressing through hole 120, and a gap is provided between the pressing portion and the wall of the pressing through hole 120. The tongue piece is formed in a strip shape or a U shape as a whole, and only one end or one side is connected to the wall of the pressing through hole 120. The pressing portion is recessed inward from other portions of the upper case 12. The tongue 121 has elasticity, and by pressing the pressing portion inward, the release member 4 can be pushed between the wire clamping members 32 to open the clamping ends 322, so that the external connection wire can be maintained or replaced conveniently.

Each wire clamp 32 also includes a wire stripping guide 323, respectively, the wire stripping guide 323 being located at the clamping end 322 of the wire clamp 32 and/or adjacent the clamping end 322. The stitch removal guide 323 has a guide slope guiding the release member 4 to be inserted between the stitch clips 32, and accordingly, the release member 4 has a contact slope that cooperates with the guide slope. As shown in fig. 5, two stitch removing guide blocks 323 on the two stitch clamping members 32 are opposite, and the guiding inclined planes on the two stitch removing guide blocks are opposite, so that a V-shaped or inverted trapezoid guiding space is formed between the two stitch removing guide blocks, and the releasing member 4 is guided, so that the releasing member 4 can enter between the stitch removing guide blocks 323 to open the clamping ends 322.

The door contact switch is provided with two conducting strips 2, and two contacts 21 are arranged on the two conducting strips 2; accordingly, the number of the jacks 111 is two, and the jacks correspond to the number and the positions of the contacts 21 one by one; the number of the connecting pieces 3 is two, the number of the through holes of the upper shell 12 and the number of the tongue pieces 121 are two, and the number of the releasing pieces 4 are two, and the releasing pieces correspond to the number and the positions of the two connecting pieces 3 one by one.

The jack 111 is specifically formed on a side surface of the lower case 11, and is inserted by the plug 200 to approach and contact with the contact 21 on the conductive sheet 2. The two receptacles 111 are identical in shape and mirror symmetrical with respect to the Y-Y direction in fig. 9. The shape of the insertion hole 111 will be described in detail taking the insertion hole 111 on the left side in fig. 9 as an example.

Referring to fig. 10, the insertion hole 111 has a geometric center 111c and is a shaped hole, and the profile thereof has a plurality of outwardly protruding flared portions 111a; specifically, the flared portion 111a projects outward relative to a regular reference pattern (circular shape as shown by the broken line in fig. 10) centered on the geometric center 111c, which is located outside the regular pattern. Adjacent outer expansion portions 111a are connected through a transition portion 111b, the transition portion 111b is a straight line or an arc protruding outwards, and the distance between the outer expansion portion 111a and the geometric center 111c is larger than the distance between the transition portion 111b and the geometric center 111 c. The transition 111b may be located within or partially coincident with or outside the reference pattern, but projects to a lesser extent than the flared portion 111a, i.e., the curvature of the transition 111b is less than the curvature of the flared portion 111 a.

Further, the flared portion 111a is formed of an arc, and has a curvature larger than that of the connecting portion. The contour of the receptacle 111 is in a central symmetrical pattern about its geometric center 111 c.

In particular, in the present embodiment, the number of the flared portions 111a is two and disposed opposite to each other, and the two flared portions 111a are connected by two outwardly convex arcs and enclose a closed contour, which is an axisymmetric pattern. Each flared portion 111a spans the X-X direction and is mirror symmetrical with respect to the X-X direction. The receptacle 111 of this shape increases the mating space for the contact bridge insertion and ensures correct insertion. The geometric center line of the two insertion holes 111 extends in the X-X direction, and the center line of the two pins 201 of the plug 200 extends in the X-X direction.

In other embodiments, the number of flared portions 111a is four and two-by-two, with one pair of flared portions 111a spanning the X-X direction and the other pair of flared portions 111a spanning the Y-Y direction.

The shell 1 is provided with wiring through holes 112 for the external leads to be inserted into and reach the connecting pieces 3, and the number and the positions of the wiring through holes 112 are in one-to-one correspondence with the two connecting pieces 3. The wiring insertion hole 111 is preferably opened on the other side surface of the housing 1 opposite to the insertion hole 111, in particular, on the side surface of the lower case 11. The wiring through hole 112 is aligned with and communicates with the threading hole 31a of the connector 3.

The wiring process of the door contact switch of this embodiment is as follows:

the pair of external wires are respectively inserted into the two wiring through holes 112, the external wires sequentially penetrate through the wiring through holes 112 and the threading holes 31a, then pass through the clamping ends 322 by overcoming the elastic force of the wire clamping pieces under the guidance of the wire clamping pieces 32, are clamped by the clamping ends 322, can automatically compress the wires, realize stable mechanical connection and electric connection, are simple and convenient to wire, avoid poor contact and do not need frequent maintenance. And in addition, other tools are not needed in the wiring process (for example, screw fastening tools and the like are not needed), so that the installation is convenient.

The wiring process of the door contact switch of this embodiment is as follows:

the tongue 121 is pressed down, the release member 4 on the inner surface of the tongue 121 moves inwards to be in contact with the stitch removing guide block 323 of the stitch clamping member 32, under the guiding effect, the release member 4 is inserted between the stitch clamping members 32 to prop open the clamping ends 322 of the stitch clamping members 32, and the external lead between the clamping ends 322 is released and can be pulled out from the socket 100, so that the external lead can be conveniently replaced or maintained without auxiliary tools, the working time is saved, and the efficiency is improved.

The working principle of the door contact switch of this embodiment is as follows:

when the elevator door reaches a predetermined height, the two inserting rods 201 of the plug 200 are inserted into the inserting holes 111 of the socket 100, the top ends of the inserting rods 201 are abutted against the contacts 21 of the two conducting strips 2, the conducting strips 2 are conducted to generate electric signals, and the electric signals are transmitted to the control system of the elevator door through the external conducting wires connected with the conducting strips 2 through the connecting pieces 3, so that the opening and closing of the elevator door are controlled. The jack 111 of the embodiment adopts a special shape with a plurality of outward expansion parts 111a, which increases the matching space when the inserting rod 201 is inserted, and ensures that the inserting rod 201 is correctly inserted to be contacted and conducted with the contact 21, thereby having higher reliability.

As used in this specification and in the claims, the terms "comprises" and "comprising" merely indicate that the steps and elements are explicitly identified, and do not constitute an exclusive list, as other steps or elements may be included in a method or apparatus. The term "and/or" as used herein includes any combination of one or more of the associated listed items.

It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly or indirectly fixed or connected to the other feature. Further, the descriptions of the upper, lower, left, right, etc. used in the present utility model are merely with respect to the mutual positional relationship of the constituent elements of the present utility model in the drawings.

It is further understood that the term "plurality" in this disclosure means two or more, and other adjectives are similar thereto.

While the principles and embodiments of the present utility model have been described above, those skilled in the art, given the above teachings of the present utility model, may make various modifications and alterations to the above described embodiments without departing from the scope of the utility model. It is to be understood by persons skilled in the art that the foregoing detailed description is provided for the purpose of explanation only and is not intended to limit the utility model as claimed. The scope of the utility model is defined by the claims and their equivalents.

Claims

1. The utility model provides a socket of door contact switch, includes the casing, locates conducting strip in the casing, be equipped with on the tip of conducting strip be used for with door contact switch's plug contact switches on the contact, still offer on the casing with supply the plug inserts in order to contact the jack of conducting strip's contact, its characterized in that: the profile of jack has a plurality of outwards convex outer expansion portion, connects through the transition portion between the adjacent outer expansion portion, the transition portion is sharp or outwards convex pitch arc, the jack has geometric center, outer expansion portion with distance between the geometric center is greater than the transition portion with distance between the geometric center.

2. The receptacle of claim 1, wherein: the flaring portion is formed by an arc and has a curvature greater than the transition portion.

3. The receptacle of claim 1, wherein: the transition portion is an arc, and the curvature of the transition portion is smaller than the curvature of the flaring portion.

4. The receptacle of claim 1, wherein: the contour of the jack forms a central symmetrical pattern around the geometric center.

5. The receptacle of claim 1, wherein: the number of the outer expansion parts is two and the outer expansion parts are oppositely arranged, and the two outer expansion parts are connected through two transition parts and enclose a closed contour.

6. The receptacle of claim 5, wherein: each of the flared portions spans the X-X direction and is mirror symmetrical with respect to the X-X direction.

7. The receptacle of claim 6, wherein: the number of the jacks is two, and the connecting lines of the geometric centers of the two jacks extend along the X-X direction.

8. The receptacle of claim 6, wherein: the transition portions are arc lines, and the two transition portions are symmetrical.

9. The receptacle of claim 1, wherein: the socket further comprises a conductive sheet arranged in the shell, a contact is arranged on the conductive sheet, and the jack is opposite to the contact.

10. A door contact switch comprising a socket and a plug, wherein the socket is a socket as claimed in any one of claims 1 to 9.