Elevator door knife structure
By adopting a double-hook design and a linkage mechanism of linkage shaft, cam, and linkage wheel in the elevator door knife structure, the problem of insufficient locking stability and reliability in the existing technology is solved, and the safety and national standard compliance are improved.
Patent Information
- Application Number
- CN202520148383.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-01-21
AI Technical Summary
Existing dual-blade unlocking synchronous door knife relies on a single locking hook for locking, resulting in poor stability and reliability of the locking mechanism and low security.
It adopts a double-hook design, which locks the device by simultaneously hooking the first hook and the second hook. The synchronous movement of the hooks is achieved by using a linkage shaft, cam and linkage wheel, which enhances the stability and reliability of the locking.
It improves the locking stability and reliability of elevator door locks, ensuring safety and meeting the requirements of national standard GB7588.
Smart Images
Figure CN223906333U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to elevator field technology especially is a kind of elevator door knife structure. BACKGROUND
[0002] Elevator car door plays very important safety protection role in elevator operation, and it is the key device for protecting passenger's personal safety and property safety. The reliability of its door lock device is crucial for the safe operation of elevator.
[0003] After the introduction of new national standard GB7588 No.1 amendment, more explicit requirements are made for the opening of car door, that is, car door cannot be opened for any reason when car is in non-level area; when car is in level area, it can be located in car or the floor station to which car is close, and car door and landing door can be manually opened by force not more than 300N, that is, car door can be locked in non-level area of elevator, and it can be unlocked in level area in any case to allow passenger to escape.
[0004] In order to realize the above function, the following two solutions are usually adopted: the first one is independent car door lock, which is not directly related to door knife and landing door ball for executing door opening; the second one is car door lock integrated in door knife, which relies on clamping landing door ball to judge whether it is in level area, and landing door ball is used as device for triggering unlocking of car door lock.
[0005] For car door lock integrated in door knife, there are differences between integrated car door lock asynchronous door knife and integrated car door lock synchronous door knife, because door knife is divided into asynchronous door knife and synchronous door knife. Asynchronous door knife has the risk of unattractive and distance exceeding national standard requirement because of larger opening of car door than landing door, therefore, synchronous door knife integrated car door lock is widely used as a more feasible scheme.
[0006] Existing integrated car door lock synchronous door knife can be divided into two categories: single blade unlocking (first blade, unlocking blade) and double blade unlocking (first blade and second blade can achieve unlocking effect). Existing double blade unlocking synchronous door knife usually only sets a single lock hook, and locking is carried out through the single lock hook, so although locking can be realized, the stability and reliability of locking are poor due to the fact that only single lock hook is used for hooking, and safety is low.
[0007] Therefore, it is necessary to research a new technology to solve the above problems. UTILITY MODEL CONTENT
[0008] Therefore, the utility model mainly aims at the defects of prior art, and its main purpose is to provide a kind of elevator door knife structure, which improves the stability and reliability of locking and ensures safety.
[0009] In order to realize the above purpose, the utility model adopts the following technical scheme:
[0010] The elevator door blade structure comprises a bottom plate installed on an elevator bridge door, a lock hook mechanism hinged on the bottom plate, and a left blade and a right blade movably installed on the front side of the bottom plate and interlinked; the rear side of the bottom plate is rotatably installed with a starting block, the lower end of the starting block is connected with a linkage shaft, and the bottom plate is provided with a first limiting hole; the front end of the linkage shaft extends out of the front side of the bottom plate through the first limiting hole and is hinged on the left blade; a rotating block is hinged between the left blade and the right blade, and the rotating block is rotatably connected to the bottom plate.
[0011] The lock hook mechanism comprises a first lock hook hinged on the front side of the bottom plate and a second lock hook hinged on the rear side of the bottom plate, a cam is arranged between the front side of the bottom plate and the rear side of the left blade, one end of the cam is connected to the front end of the linkage shaft, a first linkage wheel is rotatably installed on the first lock hook, the other end of the cam acts on the first linkage wheel, a second linkage wheel is rotatably installed on the upper end of the starting block, and one end of the second lock hook acts on the second linkage wheel.
[0012] As a preferred solution, a stud is installed on the cam; the rear end of the stud extends out of the rear side of the bottom plate through the first limiting hole and is connected to a connecting hole on the starting block.
[0013] As a preferred solution, the starting block is rotatably installed on the rear side of the bottom plate through a first rotating shaft, a first fixing column is arranged on the rear side wall of the starting block, a second fixing column is arranged on the rear side wall of the bottom plate, and a first return spring is arranged between the first fixing column and the second fixing column.
[0014] As a preferred solution, one end of the second lock hook protrudes to extend a fixing part, and a second return spring is arranged between the fixing part and the second fixing column.
[0015] As a preferred solution, two rotating blocks are arranged, the two rotating blocks are arranged in parallel at an upper and lower position, the two ends of the rotating block are rotatably connected to the left blade and the right blade through a hinged shaft, and the middle part of the rotating block is rotatably connected to the bottom plate through a second rotating shaft.
[0016] As a preferred solution, the lower end of the starting block is provided with a linkage hole, and the rear end of the linkage shaft is adapted to the linkage hole.
[0017] As a preferred solution, the first lock hook is rotatably connected to the bottom plate through a third rotating shaft, the bottom plate is provided with a second limiting hole, the upper end of the first lock hook is connected with a limiting column, and the limiting column is arranged in the second limiting hole.
[0018] As a preferred scheme, one end of the cam is concavely provided with a clamping groove, the front end of the linkage shaft is provided with a clamping part, the clamping groove is matched with the clamping part, and the other end of the cam is provided with a first arc-shaped edge which is matched with the first linkage wheel.
[0019] As a preferred scheme, the second lock hook is rotationally connected with the bottom plate through a fourth rotating shaft, and one end of the second lock hook is provided with a second arc-shaped edge which is matched with the second linkage wheel.
[0020] As a preferred scheme, the first linkage wheel is rotationally connected with the first lock hook through a fifth rotating shaft, and the second linkage wheel is rotationally connected with the upper end of the starting block through a sixth rotating shaft.
[0021] Compared with the prior art, the utility model has obvious advantages and beneficial effects, specifically speaking, according to the above technical scheme, the lock hook mechanism comprises the first lock hook hinged to the front side of the bottom plate and the second lock hook hinged to the rear side of the bottom plate, the double lock hook design is realized, the first lock hook and the second lock hook can be simultaneously hooked and locked, the stability and reliability of locking are improved, safety is guaranteed, the front end of the linkage shaft is hinged to the left blade, the cam is arranged between the front side of the bottom plate and the rear side of the left blade, one end of the cam is connected to the front end of the linkage shaft, the first linkage wheel is rotationally installed on the first lock hook, the other end of the cam is matched with the first linkage wheel, the second linkage wheel is rotationally installed on the upper end of the starting block, and one end of the second lock hook is matched with the second linkage wheel, so that the synchronous action of the starting block, the first lock hook and the second lock hook can be realized.
[0022] In order to more clearly set forth the structural features, technical means and specific purposes and functions reached by the utility model, the utility model will be further described in detail below in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 It is a three-dimensional structure schematic diagram of the embodiment of the utility model;
[0024] Figure 2 It is another three-dimensional structure schematic diagram of the embodiment of the utility model;
[0025] Figure 3 It is still another three-dimensional structure schematic diagram of the embodiment of the utility model;
[0026] Figure 4 It is an exploded schematic diagram of the embodiment of the utility model;
[0027] Figure 5 It is another exploded schematic diagram of the embodiment of the utility model;
[0028] Figure 6It is the partial structure perspective schematic drawing of the embodiment of the utility model.
[0029] Explanation of the drawing mark:
[0030] 10, bottom plate 11, first limit hole
[0031] 12, second fixed column 13, second limit hole
[0032] 20, left blade 30, right blade
[0033] 40, start block 41, connecting hole
[0034] 42, first fixed column 43, linkage hole
[0035] 44, adjusting screw 50, linkage shaft
[0036] 51, nylon ring 52, occlusion part
[0037] 60, rotating block 70, first lock hook
[0038] 80, second lock hook 81, fixed part
[0039] 82, second arc-shaped edge 90, cam
[0040] 91, occlusion groove 92, first arc-shaped edge
[0041] 101, first linkage wheel
[0042] 102, second linkage wheel 103, stud
[0043] 104, first rotating shaft 105, first return spring
[0044] 106, second return spring 107, hinged shaft
[0045] 108, second rotating shaft 109, third rotating shaft
[0046] 201, limit post 202, fourth rotating shaft
[0047] 203, fifth rotating shaft 204, sixth rotating shaft
[0048] 205, seventh rotating shaft 206, first rubber ring
[0049] 207, second rubber ring 208, pull rope block
[0050] 209, eighth rotating shaft 301, pull rope hole
[0051] 302, anti-scraping contact frame 303, door blade contact seat. DETAILED DESCRIPTION
[0052] Please refer to Figures 1 to 6 It shows the specific structure of the embodiment of the utility model.
[0053] An elevator door blade structure, comprising a bottom plate 10 installed on an elevator bridge door, a lock hook mechanism hinged on the bottom plate 10, and a left blade 20 and a right blade 30 movably installed on the front side of the bottom plate 10 and interlinked; the rear side of the bottom plate 10 is rotatably installed with a starting block 40, the starting block 40 is rotatably installed on the rear side of the bottom plate 10 through a first rotating shaft 104, a first fixed column 42 is arranged on the rear side wall of the starting block 40, a second fixed column 12 is arranged on the rear side wall of the bottom plate 10, a first return spring 105 is arranged between the first fixed column 42 and the second fixed column 12, the two ends of the first return spring 105 are both provided with hook portions, and the hook portions of the two ends of the first return spring 105 are respectively hooked into the first fixed column 42 and the second fixed column 12, so that the starting block 40 can be driven to reset through the first return spring 105.
[0054] The lower end of the starting block 40 is connected with a linkage shaft 50, and the bottom plate 10 is provided with a first limiting hole 11; the front end of the linkage shaft 50 extends out of the front side of the bottom plate 10 through the first limiting hole 11 and is hinged on the left blade 20; a rotating block 60 is hinged between the left blade 20 and the right blade 30, and the rotating block 60 is rotatably connected to the bottom plate 10; in this embodiment, the rotating block 60 is provided with two, and the two rotating blocks 60 are arranged in parallel at an upper and lower position, the two ends of the rotating block 60 are rotatably connected to the left blade 20 and the right blade 30 through a hinge shaft 107, and the middle part of the rotating block 60 is rotatably connected to the bottom plate 10 through a second rotating shaft 108.
[0055] The lock hook mechanism comprises a first lock hook 70 hinged on the front side of the bottom plate 10 and a second lock hook 80 hinged on the rear side of the bottom plate 10, a cam 90 is arranged between the front side of the bottom plate 10 and the rear side of the left blade 20, one end of the cam 90 is connected to the front end of the linkage shaft 50, and a stud 103 is installed on the cam 90; the rear end of the stud 103 extends out of the rear side of the bottom plate 10 through the first limiting hole 11 and is connected to the connecting hole 41 on the starting block 40; the first lock hook 70 is rotatably installed with a first linkage wheel 101, the other end of the cam 90 acts on the first linkage wheel 101, the upper end of the starting block 40 is rotatably installed with a second linkage wheel 102, and one end of the second lock hook 80 acts on the second linkage wheel 102.
[0056] One end of the second hook 80 is provided with a fixing part 81, a second reset spring 106 is arranged between the fixing part 81 and the second fixing column 12, both ends of the second reset spring 106 are provided with hook parts, the hook parts of both ends of the second reset spring 106 are respectively hooked into the fixing part 81 and the second fixing column 12, so that the second hook 80 can be driven to reset by the second reset spring 106.
[0057] The lower end of the starting block 40 is provided with a linkage hole 43, the rear end of the linkage shaft 50 is adapted to the linkage hole 43, the lower end of the starting block 40 is provided with an adjusting screw 44, one end of the adjusting screw 44 extends into the linkage hole 43 and abuts against the rear end surface of the linkage shaft 50, so that the tightness of the linkage shaft 50 can be adjusted by the adjusting screw 44, preferably, a nylon ring 51 is sleeved on the rear end of the linkage shaft 50, so that the adjusting screw 44 contacts and abuts against the nylon ring 51, avoiding the phenomenon that the adjusting screw 44 directly contacts the linkage shaft 50 and causes damage to the linkage shaft 50.
[0058] The first hook 70 is rotationally connected with the bottom plate 10 through a third rotating shaft 109, the bottom plate 10 is provided with a second limiting hole 13, the upper end of the first hook 70 is connected with a limiting column 201, the limiting column 201 is arranged in the second limiting hole 13, so that the rotation range of the first hook 70 can be limited by the combined design of the second limiting hole 13 and the limiting column 201.
[0059] One end of the cam 90 is recessed with a biting groove 91, the front end of the linkage shaft 50 is provided with a biting part 52, the biting groove 91 is adapted to the biting part 52, the other end of the cam 90 is provided with a first arc-shaped edge 92 which acts on a first linkage wheel 101. The second hook 80 is rotationally connected with the bottom plate 10 through a fourth rotating shaft 202, one end of the second hook 80 is provided with a second arc-shaped edge 82 which acts on a second linkage wheel 102. In this embodiment, the first linkage wheel 101 is rotationally connected with the first hook 70 through a fifth rotating shaft 203, the second linkage wheel 102 is rotationally connected with the upper end of the starting block 40 through a sixth rotating shaft 204.
[0060] A seventh rotating shaft 205 is rotationally installed on the rear side wall of the bottom plate 10, a first rubber ring 206 and a second rubber ring 207 are sequentially sleeved on the seventh rotating shaft 205 from front to back along the axial direction, one side of the upper end of the starting block 40 and one side of the fixing part 81 are respectively limited by the first rubber ring 206 and the second rubber ring 207, so that the rotation range of the starting block 40 and the second hook 80 can be limited by the combined design of the seventh rotating shaft 205, the first rubber ring 206 and the second rubber ring 207.
[0061] A pull rope block 208 is rotatably installed on the right side of the rear side wall of the bottom plate 10, the pull rope block 208 is rotatably connected with the bottom plate 10 through an eighth rotating shaft 209, and the pull rope block 208 is provided with a pull rope hole 301, so that the pull rope is connected to the pull rope hole 301 of the pull rope block 208.
[0062] In addition, in the embodiment, the front side wall of the first lock hook 70 is provided with an anti-snatching contact frame 302, and the door blade contact seat 303 is installed on the anti-snatching contact frame 302.
[0063] In summary, the design of the utility model mainly comprises the first lock hook hinged to the front side of the bottom plate and the second lock hook hinged to the rear side of the bottom plate, so that the double lock hook design is realized, the first lock hook and the second lock hook can be simultaneously hooked and locked, the stability and reliability of the locking are improved, the safety is ensured, the front end of the linkage shaft is hinged to the left blade, the cam is arranged between the front side of the bottom plate and the rear side of the left blade, one end of the cam is connected to the front end of the linkage shaft, the first linkage wheel is rotatably installed on the first lock hook, the other end of the cam is in action with the first linkage wheel, the second linkage wheel is rotatably installed on the upper end of the starting block, one end of the second lock hook is in action with the second linkage wheel, so that the synchronous action of the left blade, the first lock hook and the second lock hook driven by one starting block is realized.
[0064] The above is only a preferred embodiment of the utility model, and does not limit the technical range of the utility model, so any slight modification, equivalent change and modification according to the technical essence of the utility model are still within the technical range of the utility model.
Claims
1. An elevator door blade structure comprising a base plate installed on an elevator bridge door, a lock hook mechanism hinged to the base plate, and a left blade and a right blade movably installed on the front side of the base plate and interlocked with each other; characterized in that: The rear side of the bottom plate is rotationally mounted with a starting block, the lower end of the starting block is connected with a linkage shaft, and the bottom plate is provided with a first limiting hole; the front end of the linkage shaft extends out of the front side of the bottom plate through the first limiting hole and is hingedly connected to the left blade; a rotating block is hingedly connected between the left blade and the right blade, and the rotating block is rotationally connected to the bottom plate; The hook mechanism comprises a first hook hingedly connected to the front side of the bottom plate and a second hook hingedly connected to the rear side of the bottom plate, a cam is arranged between the front side of the bottom plate and the rear side of the left blade, one end of the cam is connected to the front end of the linkage shaft, a first linkage wheel is rotationally mounted on the first hook, the other end of the cam acts on the first linkage wheel, a second linkage wheel is rotationally mounted on the upper end of the starting block, and one end of the second hook acts on the second linkage wheel.
2. An elevator door blade structure according to claim 1, characterized in that: A stud is mounted on the cam; the rear end of the stud extends out of the rear side of the bottom plate through the first limiting hole and is connected to the connecting hole on the starting block.
3. The elevator door blade structure of claim 1, wherein: The starting block is rotationally mounted on the rear side of the bottom plate through a first rotating shaft, a first fixing column is arranged on the rear side wall of the starting block, a second fixing column is arranged on the rear side wall of the bottom plate, and a first return spring is arranged between the first fixing column and the second fixing column.
4. An elevator door blade structure according to claim 3, characterized in that: One end of the second hook protrudes to extend a fixing portion, and a second return spring is arranged between the fixing portion and the second fixing column.
5. The elevator door blade structure of claim 1, wherein: The rotating block is provided with two rotating blocks arranged in parallel at an upper and lower position, the two ends of the rotating block are respectively rotationally connected to the left blade and the right blade through hinging shafts, and the middle part of the rotating block is rotationally connected to the bottom plate through a second rotating shaft.
6. The elevator door blade structure of claim 1, wherein: The lower end of the starting block is provided with a linkage hole, and the rear end of the linkage shaft is adapted to the linkage hole.
7. The elevator door blade structure of claim 1, wherein: The first hook is rotationally connected to the bottom plate through a third rotating shaft, the bottom plate is provided with a second limiting hole, the upper end of the first hook is connected with a limiting column, and the limiting column is arranged in the second limiting hole.
8. The elevator door blade structure of claim 1, wherein: One end of the cam is recessed with a clamping groove, the front end of the linkage shaft is provided with a clamping portion, the clamping groove is adapted to the clamping portion, and the other end of the cam is provided with a first arc-shaped edge acting on the first linkage wheel.
9. The elevator door blade structure of claim 1, wherein: The second hook is rotationally connected to the bottom plate through a fourth rotating shaft, and one end of the second hook is provided with a second arc-shaped edge acting on the second linkage wheel.
10. The elevator door blade structure of claim 1, wherein: The first linkage wheel is rotationally connected to the first hook through a fifth rotating shaft, and the second linkage wheel is rotationally connected to the upper end of the starting block through a sixth rotating shaft.