CN210763842U - Elevator landing door lock device - Google Patents

Abstract

The utility model relates to an elevator layer door lock device, including installation base, latch hook and holding assembly. The installation base is used for installing on the door link plate, is equipped with first backup pad on the installation base. The latch hook is rotatably connected with the mounting base through a rotating shaft, and a second supporting plate opposite to the first supporting plate is arranged on the latch hook. The first supporting plate is provided with a first through hole, and the second supporting plate is provided with a second through hole opposite to the first through hole. The holding assembly comprises a limiting bolt and an elastic piece. Be equipped with locknut on the spacing bolt, spacing bolt axial direction sets up in first through-hole and second through-hole movably, and first backup pad and second backup pad all are located between spacing bolt's head and locknut. The elastic part is arranged between the first supporting plate and the second supporting plate. Above-mentioned elevator layer door lock device because elastic component and spacing bolt concentrate the setting, and the whole device volume can be simplified to a certain extent, reduces the occupation space of device.

Description

Elevator landing door lock device

Technical Field

The utility model relates to an elevator technical field especially relates to an elevator layer door locking device.

Background

With the increasing concern of people on the safety of the elevator, the standards of the elevator industry are also upgraded. In the shaft, machine spaces and between the pulleys, protective casings (covers) should be used to prevent direct contact with the electrical equipment. The protection grade of the used protective shell (cover) is not lower than IP 2X. Also specified in the standard are: the elements of the electric safety device, which verify the locking condition of the door leaf, should be forcibly operated by the locking member without any intermediate mechanism. The locking of the landing door lock is verified by the electrical safety device according to the national standard, i.e. the electrical safety device on the landing door lock needs to meet the requirements of protection level IP 2X. However, the limiting bolt and the elastic piece of the traditional elevator floor door lock device are arranged in a split mode, the whole size is large, and the occupied space is large.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need to overcome the drawbacks of the prior art and to provide an elevator landing door lock apparatus that enables the overall size to be reduced and the occupied space to be reduced.

The technical scheme is as follows: an elevator landing door lock apparatus, comprising: the door hanging plate comprises a mounting base and a lock hook, wherein the mounting base is used for being mounted on a door hanging plate, a first supporting plate is arranged on the mounting base, the lock hook is rotatably connected with the mounting base through a rotating shaft, a second supporting plate opposite to the first supporting plate is arranged on the lock hook, a first through hole is formed in the first supporting plate and is a screw hole, and a second through hole opposite to the first through hole is formed in the second supporting plate; the retaining assembly comprises a limiting bolt and an elastic piece, the limiting bolt is provided with a locknut, the limiting bolt is movably arranged in the first through hole and the second through hole in the axial direction, the first supporting plate and the second supporting plate are both located between the head of the limiting bolt and the locknut, and the elastic piece is arranged between the first supporting plate and the second supporting plate.

In the elevator landing door lock device, the retaining assembly is connected with the mounting base and the locking hook, and the inclined arrangement state of the locking hook is adjusted by adjusting the position of the locknut on the limiting bolt, so that the locking hook is in a transverse arrangement state (namely a horizontal state); on the other hand, when the locking hook is in a horizontal state, the elastic element is in a compressed state, and a locking force is provided for the locking hook to enable the locking hook to be kept in the horizontal state. In addition, because elastic component and spacing bolt concentrate the setting, whole device volume can be simplified to a certain extent, reduces the occupation space of device.

In one embodiment, the elastic member is a compression spring sleeved on the limit bolt.

In one embodiment, the holding assembly further comprises a first limit cover and a second limit cover; the limiting bolt penetrates through the first limiting cover and the second limiting cover, and the first limiting cover and the second limiting cover are arranged oppositely; one end of the pressure spring is sleeved in the first limiting cover, and the other end of the pressure spring is sleeved in the second limiting cover.

In one embodiment, the holding assembly is disposed between the rotating shaft and the contact terminal, and the latch hook is rotatably provided with a pulley disposed between the rotating shaft and the contact terminal.

In one embodiment, the elevator landing door lock device further comprises a contact terminal connected with the locking hook, a protective cover, an insulating seat arranged in the protective cover, two switch bodies arranged on the insulating seat at intervals, and a lock seat arranged at the bottom of the protective cover; the hook body of the lock hook is matched with the hook body of the lock seat, and the contact terminal is used for electrically contacting with the two switch bodies; when the hook body of the lock hook and the hook body of the lock seat are hooked with each other, the conductive surface of the contact terminal is synchronously in electrical contact with the two switch bodies; when the hook body of the lock hook is separated from the hook body of the lock seat, the conductive surface of the contact terminal is separated from the switch body.

In one embodiment, the plate surface of the contact terminal is attached to the plate surface of the latch hook.

In one embodiment, the two switch bodies are arranged on the insulating base at intervals up and down, the surface of the contact terminal, which is used for being in contact with the two switch bodies, is a working surface, and the working surface is a conductive surface and is in a step shape.

In one embodiment, the protective cover is provided with an inlet and an outlet for accommodating a lock hook and a contact terminal, and comprises two first side plates arranged oppositely and two first connecting plates arranged oppositely, two ends of each first connecting plate are respectively connected with the two first side plates, and the two first side plates and the two first connecting plates enclose the inlet and the outlet.

In one embodiment, the two first side plates and the two first connecting plates are of an integrated structure.

In one embodiment, the spacing between the two first side panels is no greater than 12 mm; the distance between the switch body in the protective cover and the inlet and the outlet is larger than 20 mm.

Drawings

Fig. 1 is a schematic structural diagram of an elevator landing door lock device according to an embodiment of the present invention;

fig. 2 is a schematic view of another perspective structure of an elevator landing door lock device according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an elevator landing door lock device according to an embodiment of the present invention;

fig. 4 is a schematic view of an internal structure of a protective cover according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a protective cover according to an embodiment of the present invention;

FIG. 6 is an exploded view of the shield of FIG. 5;

fig. 7 is a schematic structural view of a protective cover according to another embodiment of the present invention;

FIG. 8 is an exploded view of the shield of FIG. 7;

FIG. 9 is a side view of the retaining assembly with the resilient member removed and a pulley installed in accordance with one embodiment of the present invention;

fig. 10 is a view structural diagram of a first position-limiting cover according to an embodiment of the present invention;

fig. 11 is a view illustrating another perspective structure of the first position-limiting cover according to an embodiment of the present invention;

fig. 12 is a schematic structural view of the protective cover according to an embodiment of the present invention after the insulating base, the switch body and the bracket are installed therein;

FIG. 13 is a schematic view of the shield of FIG. 12;

FIG. 14 is an exploded view of the shield of FIG. 13;

FIG. 15 is a perspective view of the stand of FIG. 12;

FIG. 16 is a view in elevation of the bracket illustrated in FIG. 12;

fig. 17 is a schematic structural view of the protection cover according to another embodiment of the present invention after the insulating base, the switch body and the bracket are installed therein;

fig. 18 is a schematic structural view of the shield illustrated in fig. 17.

Reference numerals:

10. a mounting base 11, a first support plate, 20, a latch hook, 21, a hook body, 22, a pulley, 23, a second support plate, 24, an L-shaped plate, 30, a holding assembly, 31, a limit bolt, 32, a locknut, 33, an elastic member, 34, a first limit cover, 341, an annular flange, 35, a second limit cover, 40, a rotating shaft, 50, a contact terminal, 51, a working surface, 60, a protective cover, 61, an inlet/outlet, 62, a first side plate, 63, a first connecting plate, 64, a main body, 641, a first opening, 642, a housing, 6421, a second opening, 6422, a first mounting hole, 6423, a first via hole, 643, a second side plate, 6431, a second mounting hole, 6432, a second via hole, 644, a third opening, 645, a third mounting hole, 646, a third via hole, 65, a bottom plate, 651, a fourth mounting hole, 70, an insulating base, 80, a switch body, 90, a latch base, 91, and a hook body, 100. bracket, 101, fifth mounting hole, 102, sixth mounting hole, 103, seventh mounting hole, 110, first mounting part, 120, third mounting part, 130, fifth mounting part.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the description of the present invention, it is to be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly connected" to another element, there are no intervening elements present.

In one embodiment, referring to fig. 1 and 2, an elevator landing door lock apparatus includes a mounting base 10, a locking hook 20, and a holding assembly 30. The mounting base 10 is used for being mounted on the door hanging plate, and a first supporting plate 11 is arranged on the mounting base 10. The locking hook 20 is rotatably connected to the mounting base 10 through a rotating shaft 40, and the locking hook 20 is provided with a second support plate 23 opposite to the first support plate 11. First backup pad 11 is equipped with first through-hole, first through-hole is the screw, second backup pad 23 be equipped with the second through-hole that first through-hole is relative. The holding assembly 30 includes a limit bolt 31 and an elastic member 33. Stop nut 32 is arranged on limit bolt 31, limit bolt 31 axial direction movably set up in first through-hole with in the second through-hole, just first backup pad 11 with second backup pad 23 all is located the head of limit bolt 31 with between stop nut 32. The elastic member 33 is disposed between the first support plate 11 and the second support plate 23.

In the elevator landing door lock device, the retaining assembly 30 is connected to the mounting base 10 and the locking hook 20, and the inclined arrangement state of the locking hook 20 is adjusted by adjusting the position of the locknut 32 on the limiting bolt 31, so that the locking hook 20 is in a transverse arrangement state (i.e. a horizontal state); on the other hand, when the shackle 20 is in a horizontal state, the elastic member 33 is in a compressed state, and provides a locking force to the shackle 20 to keep the shackle 20 in the horizontal state. In addition, because elastic component 33 and spacing bolt 31 concentrate the setting, whole device volume can be simplified to a certain extent, reduces the occupation space of device.

In one embodiment, referring to fig. 1 and fig. 2, the elastic member 33 is a compression spring sleeved on the limit bolt 31.

In one embodiment, referring to fig. 1 and 2, the retaining assembly 30 further includes a first position-limiting cover 34 and a second position-limiting cover 35. The limiting bolt 31 penetrates through the first limiting cover 34 and the second limiting cover 35, and the first limiting cover 34 and the second limiting cover 35 are arranged oppositely; one end of the pressure spring is sleeved in the first limiting cover 34, and the other end of the pressure spring is sleeved in the second limiting cover 35. So, because the both ends of pressure spring are located first spacing lid 34, the spacing lid 35 of second respectively, rotate the in-process at latch hook 20 like this, first spacing lid 34 can guarantee with the spacing lid 35 of second that the pressure spring is in vertical state.

Further, referring to fig. 9 to 11, the second position-limiting cover 35 abuts against the first supporting plate 11, and the first position-limiting cover 34 abuts against the second supporting plate 23. The first position-restricting cover 34 is provided with a first annular flange 341, and the first annular flange 341 extends into the second through hole, so that the first position-restricting cover 34 is fixed to the second support plate 23.

In one embodiment, referring to fig. 2 and 3, the holding member 30 is disposed between the rotating shaft 40 and the contact terminal 50, the latch hook 20 rotatably mounts the pulley 22 thereon, and the pulley 22 is disposed between the rotating shaft 40 and the contact terminal 50. Thus, when the door vane acts on the pulley 22, the latch hook 20 can be driven to rotate relative to the mounting base 10, so as to drive the latch hook 20 to be lifted to be separated from the latch seat 90, at this time, the elastic element 33 is further compressed, and when the acting force of the door vane is removed, the latch hook 20 is restored to the original horizontal state under the action of the restoring force of the elastic element 33 and the gravity of the latch hook 20. Specifically, the locking hook 20 is connected to an L-shaped plate 24, and the pulley 22 is rotatably mounted on the L-shaped plate 25.

In one embodiment, referring to fig. 3 and 4, the elevator landing door lock device further includes a contact terminal 50 connected to the latch hook 20, a protective cover 60, an insulating base 70 disposed in the protective cover 60, two switch bodies 80 mounted on the insulating base 70 at an interval, and a lock base 90 disposed at the bottom of the protective cover 60. The hook 21 of the latch hook 20 is matched with the hook 91 of the latch seat 90, and the contact terminal 50 is used for electrically contacting with the two switch bodies 80. When the hook 21 of the latch hook 20 and the hook 91 of the latch base 90 are hooked with each other, the conductive surface of the contact terminal 50 is electrically contacted with the two switch bodies 80 synchronously; when the hook 21 of the latch hook 20 is separated from the hook 91 of the latch holder 90, the conductive surface of the contact terminal 50 is separated from the switch 80. Thus, when the hook body 21 of the latch hook 20 and the hook body 91 of the lock base 90 are hooked with each other, the conductive surface of the contact terminal 50 is synchronously in electrical contact with the two switch bodies 80, the two switch bodies 80 are electrically conducted, and at the moment, the latch hook 20 and the lock base 90 can be verified to be in a hooked matching state through the conduction of the electrical switch, so that the stability is good, and the safety of the landing door is ensured; when the hook 21 of the latch hook 20 is separated from the hook 91 of the latch holder 90, the conductive surface of the contact terminal 50 is separated from the switch 80, and at this time, the two switch 80 are disconnected, and the electrical switch is not turned on.

In one embodiment, referring to fig. 1 and 2 again, the plate surface of the contact terminal 50 is attached to the plate surface of the latch hook 20 and detachably connected by a fastener such as a bolt.

In one embodiment, referring to fig. 3 and fig. 4, the two switch bodies 80 are disposed on the insulating base 70 at intervals up and down, a surface of the contact terminal 50 contacting the two switch bodies 80 is a working surface 51, and the working surface 51 is a conductive surface and is in a step shape. In this way, the contact terminal 50 and the switch body 80 are in surface-to-surface contact, which is advantageous for conducting the two switch bodies 80. The contact terminal 50 has an insulator outside the working surface 51, so that the protection level of the protection cover 60 can be improved, and the safety is high.

In one embodiment, referring to fig. 3 to 8, the protective cover 60 is provided with an access 61 for receiving the latch hook 20 and the contact terminal 50, and the protective cover 60 includes two first side plates 62 disposed opposite to each other and two first connecting plates 63 disposed opposite to each other. The two ends of the first connecting plate 63 are respectively connected with the two first side plates 62, and the two first side plates 62 and the two first connecting plates 63 enclose the inlet and outlet 61. Therefore, in the process of inserting the finger test or the solid foreign matter into the protective cover 60 through the inlet and outlet 61, the two first side plates 62 are connected through the two first connecting plates 63 which are oppositely arranged and enclose the inlet and outlet 61, the inlet and outlet 61 cannot be expanded by the finger test or the solid foreign matter, the protection grade is high, and the requirement of IP2X can be met.

Further, the two first side plates 62 and the two first connecting plates 63 are of an integrated structure. Alternatively, the two first side plates 62 and the two first connecting plates 63 are connected by welding, screwing, clamping, or the like. Therefore, the side wall structure enclosing the inlet and the outlet 61 is stable, is not easy to be expanded by a test finger or a solid foreign body, and has higher protection grade.

In one embodiment, referring to fig. 5 to 8, the distance between the two first side plates 62 is not greater than 12 mm; the distance between the switch body 80 in the protective cover 60 and the inlet/outlet 61 is greater than 20 mm. Therefore, the protection grade of the protective cover 60 can be improved, and the safety is high.

In one embodiment, referring to fig. 5 and 6, the shield 60 further includes a body 64. The main body 64 is provided with a first opening 641, and the two first side plates 62 and the two first connecting plates 63 are disposed in the first opening 641. The first side plate 62 and the first connecting plate 63 are connected with the main body 64 to form an integrated structure.

Further, the main body 64 includes a housing 642 and a second side plate 643. A second opening 6421 is formed in a side portion of the housing 642, the second side plate 643 is disposed corresponding to the second opening 6421, and the second side plate 643 is a transparent plate. The housing 642, the two first side plates 62 and the two first connecting plates 63 are integrated, and the housing 642, the two first side plates 62 and the two first connecting plates 63 are transparent plates. Specifically, the housing 642, the two first side plates 62, and the two first connecting plates 63 are transparent acrylic plates and are integrally formed by injection molding. In this manner, the operating state of the inside of the shield 60 can be observed through the transparent shield 60.

Further, the housing 642 and the second side plate 643 are both configured to be detachably connected to the bracket 100 disposed inside the protective cover 60. Specifically, the housing 642 is provided with a first mounting hole 6422, and the housing 642 is connected to the bracket 100 after the first mounting member 110 is inserted through the first mounting hole 6422. Similarly, the second side plate 643 is provided with a second mounting hole 6431, and the second side plate 643 is connected to the bracket 100 after passing through the second mounting hole 6431 by using a second mounting member. In this way, the housing 642 and the second side plate 643 can be detached, and the insulating base 70 and the switch body 80 in the shield cover 60 can be replaced or repaired. In another embodiment, referring to fig. 7 and 8, the shield 60 further includes a main body 64 and a bottom plate 65. A first opening 641 is disposed on a side surface of the main body 64, and the two first side plates 62 and the two first connecting plates 63 are disposed in the first opening 641. The bottom surface of the main body 64 is provided with a third opening 644, the bottom plate 65 is arranged corresponding to the third opening 644, the bottom plate 65 is connected with the first connecting plate 63, and the main body 64 is detachably connected with a support 100 arranged inside the protective cover 60. Specifically, the main body 64 is provided with a third mounting hole 645, and the main body 64 is detachably connected to the bracket 100 after the third mounting element 120 passes through the third mounting hole 645. Similarly, a fourth mounting hole 651 is disposed on the bottom plate 65, and the bottom plate 65 is detachably connected to the insulating base 70 inside the protective cover 60 after passing through the fourth mounting hole 651 by using a fourth mounting member. In this way, the main body 64 and the bottom plate 65 can be detached, and the insulating base 70 and the switch body 80 in the shield 60 can be replaced or repaired.

Further, the main body 64 is a transparent main body 64, and the bottom plate 65, the two first side plates 62, and the two first connecting plates 63 are all metal plates. In this manner, the operating state of the inside of the shield 60 can be observed through the transparent shield 60. In addition, the structural strength of the shield 60 can be ensured by the metal plate, and the stainless steel plate is selected for use as the metal plate body.

In one embodiment, the spacing between the two first side plates 62 is no greater than 12 mm; the distance between the switch body 80 in the protective cover 60 and the inlet/outlet 61 is greater than 20 mm. Therefore, the protection grade of the protective cover 60 can be improved, and the safety is high.

In addition, a marking line is provided at a portion of the top of the protection cover 60 corresponding to the access 61. The marking lines may be the same scale lines as the width of the contact terminals 50, and when the installation and adjustment are performed, the marking lines and the contact terminals 50 are aligned in a overlooking manner, so that the contact terminals 50 are ensured to enter the protective cover 60 in a centering manner.

Further, referring to fig. 12 or 17, the landing door lock apparatus further includes a bracket 100 disposed in the housing. The bracket 100 is detachably mounted on the lock housing 90.

Further, referring to fig. 12 to 16, for the shield 60 of one of the above embodiments, the housing 642 is connected to the bracket 100 after the first mounting element 110 passes through the first mounting hole 6422. Similarly, the second side plate 643 is connected to the bracket 100 by a second mounting element passing through the second mounting hole 6431.

Specifically, the first mounting member 110 is a first screw or a first bolt. The housing 642 is further provided with a first through hole 6423 communicating with the first mounting hole 6422, and the limiting head of the first mounting element 110 can pass through the first through hole 6423 to release the housing 642. In the actual working process, when the housing 642 needs to be disassembled, the first mounting part 110 is unscrewed, and then the housing 642 is moved, so that the first through hole 6423 is moved to a position opposite to the first mounting part 110, the housing 642 can be disassembled, the first mounting part 110 cannot be disassembled from the bracket 100, the protection level is improved, and the safety is high.

In addition, the second mounting part is a second screw or a second bolt. The second side plate 643 is further provided with a second through hole 6432 communicated with the second mounting hole 6431, and the limiting head of the second mounting element can pass through the second through hole 6432 so as to release the second side plate 643. In the actual work process, when needing to unpack apart second curb plate 643, unscrew the second installed part earlier, then remove second curb plate 643 for second via hole 6432 moves to the position relative with the second installed part, alright dismantle second curb plate 643 to can guarantee not to dismantle second installed part from support 100, improve protection level, the security is higher.

Further, the support 100 is specifically a U-shaped frame, one side of the U-shaped frame is provided with a fifth mounting hole 101 corresponding to the first mounting element 110, the other side of the U-shaped frame is provided with a sixth mounting hole 102 corresponding to the second mounting element, the bottom of the U-shaped frame is provided with a seventh mounting hole 103, and the bottom of the support 100 is detachably mounted on the lock base 90 through the fifth mounting element 130 passing through the seventh mounting hole 103.

Further, referring to fig. 17 and 18, for the shield 60 of the above-mentioned another embodiment, the main body 64 is connected to the support 100 after the third mounting member 120 passes through the third mounting hole 645.

Specifically, the third mounting member 120 is a third screw or a third bolt. The main body 64 is further provided with a third through hole 646 communicated with the third mounting hole 645, and the stopper head of the third mounting member 120 can pass through the third through hole 646 to release the main body 64. In the actual work process, when needing to take apart main part 64, loosen third installed part 120 earlier, then remove main part 64 for third via 646 moves to the position relative with third installed part 120, alright dismantle main part 64 to can guarantee not dismantling third installed part 120 from support 100, improve protection level, the security is higher.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. An elevator landing door lock apparatus, comprising:

the door hanging plate comprises a mounting base and a lock hook, wherein the mounting base is used for being mounted on a door hanging plate, a first supporting plate is arranged on the mounting base, the lock hook is rotatably connected with the mounting base through a rotating shaft, a second supporting plate opposite to the first supporting plate is arranged on the lock hook, a first through hole is formed in the first supporting plate and is a screw hole, and a second through hole opposite to the first through hole is formed in the second supporting plate; and

the retaining assembly comprises a limiting bolt and an elastic piece, the limiting bolt is provided with a locknut, the limiting bolt is movably arranged in the first through hole and the second through hole in the axial direction, the first supporting plate and the second supporting plate are both located between the head of the limiting bolt and the locknut, and the elastic piece is arranged between the first supporting plate and the second supporting plate.

2. The elevator landing door lock apparatus according to claim 1, wherein the elastic member is a compression spring fitted over the limit bolt.

3. The elevator landing door lock assembly of claim 2, wherein said retention assembly further comprises a first limit stop cover and a second limit stop cover; the limiting bolt penetrates through the first limiting cover and the second limiting cover, and the first limiting cover and the second limiting cover are arranged oppositely; one end of the pressure spring is sleeved in the first limiting cover, and the other end of the pressure spring is sleeved in the second limiting cover.

4. The elevator landing door lock apparatus according to claim 1, wherein the holding assembly is disposed between the rotating shaft and the contact terminal, and the locking hook is rotatably equipped with a pulley disposed between the rotating shaft and the contact terminal.

5. The elevator landing door lock device according to any one of claims 1 to 4, further comprising a contact terminal connected to the latch hook, a protective cover, an insulating base disposed in the protective cover, two switch bodies mounted on the insulating base at an interval, and a lock base disposed at the bottom of the protective cover; the hook body of the lock hook is matched with the hook body of the lock seat, and the contact terminal is used for electrically contacting with the two switch bodies; when the hook body of the lock hook and the hook body of the lock seat are hooked with each other, the conductive surface of the contact terminal is synchronously in electrical contact with the two switch bodies; when the hook body of the lock hook is separated from the hook body of the lock seat, the conductive surface of the contact terminal is separated from the switch body.

6. The elevator landing door lock assembly of claim 5, wherein the plate surface of the contact terminal abuts the plate surface of the latch hook.

7. The elevator landing door lock device according to claim 5, wherein the two switch bodies are disposed on the insulating base at intervals up and down, and a surface of the contact terminal for contacting the two switch bodies is a working surface, and the working surface is a conductive surface and has a stepped shape.

8. The elevator landing door lock device according to claim 5, wherein the protective cover has an entrance and an exit for receiving the latch hook and the contact terminal, and the protective cover includes two first side plates disposed opposite to each other and two first connecting plates disposed opposite to each other, two ends of the first connecting plates are respectively connected to the two first side plates, and the two first side plates and the two first connecting plates define the entrance and the exit.

9. The elevator landing door lock assembly of claim 8, wherein the two first side plates are of unitary construction with the two first connecting plates.

10. The elevator landing door lock assembly of claim 8, wherein the spacing between the two first side plates is no greater than 12 mm; the distance between the switch body in the protective cover and the inlet and the outlet is larger than 20 mm.

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