A new elevator shaft door special lock body structure

Abstract

The utility model discloses a novel elevator shaft door special lock body structure relates to door lock product technical field, including lock shell and lock bolt, and lock bolt includes lock bolt head and lock bolt rod, and the lock bolt hole is opened on the lock shell, and the lock bolt passes into the lock bolt hole, and the lock bolt head can slide in the lock bolt hole, the lock bolt fixed support is set up in the lock shell, and the lock bolt rod is installed on the lock bolt fixed support, and the lock bolt fixed support is connected with the reversing spring on, and the lock bolt head of lock bolt is ejected from the lock shell under the action of reversing spring, the lock shell still is equipped with the puller fork that uses with lock core cooperation, and the puller fork is divided into puller fork handle and puller fork arm, and the boss hole is opened on the lock shell, and the puller fork arm is embedded in boss hole and can make rotary motion around boss hole, and the puller fork arm is closely together with lock bolt fixed support. Through the cooperation of lock bolt, lock bolt fixed support, puller fork and reversing spring, the whole lock body structure is simple, and meets the requirement about lock body in "elevator supervision and periodical inspection regulation".

Description

Technical Field

[0001] This utility model relates to the field of door lock product technology, and a novel lock body structure for elevator shaft doors. Background Technology

[0002] Currently, the three existing types of public area locks on the market and in the industry (corridor locks, simple corridor locks, and shaft locks) cannot fully meet the growing customer needs, especially elevator shaft door locks. The State Administration for Market Regulation has recently issued a new technical specification, the "Elevator Supervision and Periodic Inspection Rules" (TSG T7001—2023), which requires that elevator shaft door locks have the following functions: "The door is equipped with a lock that can be opened with a key; after the door is opened, it can be closed and locked without a key; and after the door is locked, it can be opened from inside the machine room without a key." The three existing types of public area locks on the market and in the industry cannot meet these requirements. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a new type of lock body structure for elevator shaft doors.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A novel lock body structure for elevator shaft doors includes a lock shell and a latch. The latch includes a latch tongue and a latch rod. A latch hole is opened on the lock shell, through which the latch tongue passes and can slide. A latch fixing bracket is movably installed inside the lock shell, and the latch rod is mounted on the latch fixing bracket. A reversing spring is connected to the latch fixing bracket, which pushes the latch tongue out of the lock shell under the action of the reversing spring. The lock shell also has a fork for cooperating with the lock cylinder. The fork consists of a fork handle and a fork arm. A boss hole is opened on the lock shell, and the fork arm is embedded in the boss hole and can rotate around the boss hole. The fork arm is in close contact with the latch fixing bracket.

[0006] The lock case includes a front panel, an upper cover plate, and a lower cover plate. The front panel, upper cover plate, and lower cover plate are detachably connected to form the lock case. The lock tongue fixing bracket and the reversing spring are both located on the lower cover plate.

[0007] Specifically, the locking tongue fixing bracket has a guide hole and a limiting bracket. The locking tongue rod passes through the guide hole and is mounted on the limiting bracket. A protective spring is sleeved on the locking tongue rod between the guide hole and the limiting bracket.

[0008] Preferably, the latch rod has an annular groove, and a fixing plate is provided on the annular groove. The fixing plate is locked on the annular groove to strengthen the connection between the latch and the latch fixing bracket. The fixing plate is provided with a guide boss, and the lock shell has a sliding hole corresponding to the position of the fixing plate. The guide boss is locked into the sliding hole and can slide along the sliding hole.

[0009] The lock housing is equipped with a bend, a fixing buckle, and a limiting clip. The reversing spring is fixed on the bend, one leg of the reversing spring is fixed on the fixing buckle, and the other leg passes through the limiting clip and abuts against the lock tongue fixing bracket.

[0010] Preferably, the latch fixing bracket has a sliding groove, the lock housing has a mounting pin, and the upper cover plate has a corresponding pin hole. The sliding groove fits onto the mounting pin, allowing the latch fixing bracket to move back and forth along the mounting pin.

[0011] Specifically, the fork includes an upper fork and a lower fork pair. The upper fork is provided with a locking hole and a figure-eight shaped hole, and the lower fork is provided with a locking block and a figure-eight shaped hole. The locking block is fastened into the locking hole, and the two are fastened together to form a fork. The figure-eight shaped holes on the upper fork and the lower fork form a figure-eight shaped through hole after being combined. The figure-eight shaped through hole can be matched with the half lock cylinders for public area lock bodies that are currently available on the market.

[0012] Preferably, the latch bolt is of the oblique type.

[0013] The lock housing also has a screw guard to protect the pull fork.

[0014] The beneficial effects of this utility model are:

[0015] This utility model, through the cooperation of the locking tongue, locking tongue fixing bracket, fork, and reversing spring, allows for door lock assembly using the lock body structure of this utility model. After the door is opened, it can be closed and locked without a key. After the door is locked, it can be opened from inside the machine room without a key. After the door is locked, it can be opened from outside the machine room with a key. This solves the problem that the original three types of work area lock bodies cannot meet the functional requirements of the lock body in the technical specifications of the newly issued "Elevator Supervision and Periodic Inspection Rules" (TSG T7001—2023) by the State Administration for Market Regulation. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the internal structure of this utility model;

[0017] Figure 2 This is an internal front view of the present invention;

[0018] Figure 3 This is an internal side view of the present invention;

[0019] Figure 4 This is a three-dimensional structural diagram of the upper cover plate of this utility model;

[0020] Figure 5 This is a three-dimensional structural diagram of the lower cover plate of this utility model;

[0021] Figure 6 This is a schematic diagram of the locking tongue structure of this utility model;

[0022] Figure 7 This is a schematic diagram of the locking tongue fixing bracket structure of this utility model;

[0023] Figure 8 This is an exploded view of the locking fork of this utility model;

[0024] In the diagram, 1-panel, 2-lower cover plate, 21-mounting pin, 22-lower boss hole, 23-bend, 24-limiting clip, 25-fixing buckle, 3-upper cover plate, 31-pin hole, 32-upper boss hole, 33-sliding hole, 4-shift fork, 41-shift fork handle, 42-shift fork arm, 43-upper shift fork, 44-locking hole, 45-lower shift fork, 46-locking block, 47-figure-eight hole, 5-reversing spring, 6-lock tongue fixing bracket, 61-guide hole, 62-limiting bracket, 63-sliding groove, 7-fixing piece, 8-protective spring, 9-lock tongue, 91-lock tongue rod, 92-lock tongue, 10-screw protector. Detailed Implementation

[0025] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] See Figure 1-8 This utility model provides a technical solution:

[0027] A novel lock body structure for elevator shaft doors includes a panel 1, an upper cover plate 3, a lower cover plate 2, and a latch 9. The panel 1, upper cover plate 3, and lower cover plate 2 are detachably and fixedly connected by bolts to form the lock body shell. The latch 9 includes a latch tongue 92 and a latch tongue rod 91. A latch tongue hole is opened on the panel 1, through which the latch 9 passes, and the latch tongue 92 can slide within the latch tongue hole. A latch tongue fixing bracket 6 is installed on the lower cover plate 2. A guide hole 61 is opened on the side of the latch tongue fixing bracket 6, and a limiting bracket 62 is provided. The latch tongue rod 91 passes through the guide hole 61 and rests on the limiting bracket 62. A reversing spring 5 is connected to the latch fixing bracket 6. The reversing spring 5 is fixed on the bend 23 of the lower cover plate 2 and is partially formed and fixed on the lower cover plate 2. One leg of the reversing spring 5 is fixed on the fixing buckle 25 on the lower cover plate 2, and the other leg passes through the limiting clamp 24 and abuts against the latch fixing bracket 6. Under the spring force of the reversing spring 5, the latch fixing bracket 6 pushes the latch tongue 92 of the latch 9 out of the panel 1.

[0028] A protective spring 8 is sleeved on the latch rod 91 between the guide hole 61 and the limiting bracket 62. An annular groove is formed on the latch rod 91, and a fixing piece 7 is fitted on the annular groove. The fixing piece 7 is locked in the annular groove to further strengthen the connection between the latch 9 and the latch fixing bracket 6. A guide boss is formed on the top of the fixing piece 7, and a sliding hole 33 is formed on the upper cover plate 3 at the position corresponding to the fixing piece 7. The guide boss and the sliding hole 33 cooperate to allow the fixing piece 7 to move back and forth along the sliding hole 33. A sliding groove 63 is formed on the latch fixing bracket 6, and a mounting pin 21 is provided on the lower cover plate 2. A pin hole 31 is formed at the corresponding position on the upper cover plate 3. The sliding groove 63 is fitted onto the mounting pin 21, allowing the latch fixing bracket 6 to move back and forth along the mounting pin 21. The mounting pin 21 passes through the pin hole 31 to close.

[0029] The lock body is also equipped with a fork 4 that works with the lock cylinder. The fork 4 includes an upper fork 43 and a lower fork 45. The upper fork 43 has a locking hole 44, and the lower fork 45 has a locking block 46. The locking block 46 is fastened into the locking hole 44, and the two are fastened together to form the fork 4. The assembled fork 4 is divided into two parts: a fork arm 42 and a fork handle 41. The upper cover plate 3 and the lower cover plate 2 have corresponding upper boss holes 32 and lower boss holes 22, respectively. The upper fork 43 and the lower fork 45 are respectively locked in the upper boss hole 32 and the lower boss hole 22. The fork arm 42 can rotate in the boss hole formed by the upper boss hole 32 and the lower boss hole 22. One side of the fork arm 42 is closely close to the rear inner side of the lock tongue fixing bracket 6, and the other side is closely close to the mounting pin 21. When the fork handle 41 rotates, it can drive the lock tongue 92 to retract into the panel, thereby realizing the unlocking action. The upper fork 43 and lower fork 45 each have a figure-eight shaped hole 47. After combining the upper fork 43 and lower fork 45, a figure-eight shaped through hole is formed on the fork handle 41. This figure-eight shaped through hole can be matched with the half-lock cylinders for public area lock bodies currently available on the market. The half-lock cylinder for public area lock bodies is installed on the outdoor side, and the conductive plate on the lock cylinder matches the figure-eight shaped hole 47 of the upper fork 43 or lower fork 45 of the lock body. The lower cover plate 2 is also provided with a screw guard 10 to protect the fork 4.

[0030] When a person is outside the door, turning the lock cylinder with the key causes the upper fork 43 or lower fork 45 to rotate, thus unlocking the door. The inside of the door can be fitted with a knob specifically designed for public area locks. This knob has a paddle that engages with the figure-eight shaped hole 47 of the upper fork 43 or lower fork 45 on the lock body. When a person is inside the door, turning the knob causes the upper fork 43 or lower fork 45 to rotate, thus unlocking the door. When the door leaf and frame are closed and aligned under external force, the lock body, under the elastic force of the reversing spring 5, can push the bolt 92 outward from the lock body panel, allowing part of the bolt 92 to insert into the corresponding hole on the door frame, thereby achieving the function of closing and locking the door without a key.

[0031] The bolt 9 of this utility model patent adopts a slanted bolt shape, but it can also adopt an I-shaped bolt, a semi-circular bolt, or other shapes.

[0032] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A novel lock body structure for elevator shaft doors, characterized in that: The lock includes a lock case and a lock bolt. The lock bolt includes a bolt tongue and a bolt rod. A bolt hole is formed on the lock case, through which the bolt tongue passes and can slide. A bolt fixing bracket is movably disposed within the lock case, and the bolt rod is mounted on the bolt fixing bracket. A reversing spring is connected to the bolt fixing bracket, which pushes the bolt tongue out of the lock case under the action of the reversing spring. The lock case also includes a fork for cooperating with the lock cylinder. The fork consists of a fork handle and a fork arm. A boss hole is formed on the lock case, and the fork arm is embedded in the boss hole and can rotate around the boss hole. The fork arm is in close contact with the bolt fixing bracket.

2. The novel elevator shaft door lock body structure according to claim 1, characterized in that: The lock case includes a front panel, an upper cover plate, and a lower cover plate. The front panel, upper cover plate, and lower cover plate are detachably connected to form the lock case. The bolt fixing bracket and the reversing spring are both located on the lower cover plate.

3. The novel elevator shaft door lock body structure according to claim 1, characterized in that: The locking tongue fixing bracket has a guide hole and a limiting bracket. The locking tongue rod passes through the guide hole and is mounted on the limiting bracket.

4. The novel elevator shaft door lock body structure according to claim 3, characterized in that: A protective spring is fitted onto the locking tongue rod between the guide hole and the limiting bracket.

5. The novel elevator shaft door lock body structure according to claim 1, characterized in that: The latch rod has an annular groove, and a fixing plate is provided on the annular groove. The fixing plate is locked in the annular groove to strengthen the connection between the latch and the latch fixing bracket. The fixing plate has a guide boss. The lock housing has a sliding hole corresponding to the position of the fixing plate. The guide boss is locked into the sliding hole and can slide along the sliding hole.

6. The novel elevator shaft door lock body structure according to claim 1, characterized in that: The lock housing is provided with a bend, a fixing buckle and a limiting clip. The reversing spring is fixed on the bend, one leg of the reversing spring is fixed on the fixing buckle, and the other leg passes through the limiting clip and abuts against the lock tongue fixing bracket.

7. The novel elevator shaft door lock body structure according to claim 1, characterized in that: The latch fixing bracket has a sliding groove, the lock housing has a mounting pin, and the upper cover plate has a corresponding pin hole. The sliding groove fits onto the mounting pin, allowing the latch fixing bracket to move back and forth along the mounting pin.

8. The novel elevator shaft door lock body structure according to claim 1, characterized in that: The fork includes an upper fork and a lower fork pair. The upper fork has a locking hole and an 8-shaped hole, and the lower fork has a locking block and an 8-shaped hole. The locking block is fastened into the locking hole, and the two are fastened together to form a fork. The 8-shaped holes on the upper fork and the lower fork form an 8-shaped through hole after being combined. The 8-shaped through hole can be matched with the half lock cylinders for public area lock bodies that are currently available on the market.

9. The novel elevator shaft door lock body structure according to claim 1, characterized in that: The latch bolt is a beveled type.

10. The novel elevator shaft door lock body structure according to claim 1, characterized in that: The lock housing is also equipped with a screw guard to protect the pull fork.

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