CN210438252U

CN210438252U - Long-life door knife assembly

Info

Publication number: CN210438252U
Application number: CN201921387057.6U
Authority: CN
Inventors: 刘良爱; 郑挺健; 郑士泼
Original assignee: Sanmen Zhongying Technology Co Ltd
Current assignee: Sanmen Zhongying Technology Co Ltd
Priority date: 2019-08-23
Filing date: 2019-08-23
Publication date: 2020-05-01
Anticipated expiration: 2029-08-23

Abstract

The utility model discloses a long-life door sword subassembly belongs to elevator trade door system field, has solved arm of a knife movable reliability problem, and its technical scheme main points are including bottom plate latch hook board riveting subassembly, rocker subassembly, door sword connecting rod assembly and door sword latch hook, and rocker subassembly rotates to be connected in door sword connecting rod assembly, door sword connecting rod assembly includes two short connecting rods, two arms, and two short connecting rods and two arm of a knife tip pin joints form parallelogram structure, two the short connecting rod rotates to be connected at bottom plate latch hook board riveting subassembly, and a short connecting rod of rocker subassembly drive rotates, door sword latch hook pin joint is in the edge of bottom plate latch hook board riveting subassembly, and the back tip of door sword latch hook passes through the latch hook extension spring and connects the rocker subassembly, has reached the effect that improves arm operational reliability, reduce cost.

Description

Long-life door knife assembly

Technical Field

The utility model relates to an elevator trade door system field especially relates to a long-life door sword subassembly.

Background

The general structure of the existing door knife assembly is as follows: the utility model provides a SK41 sedan-chair lock door sword, includes door sword backplate subassembly, short link assembly, long link assembly, latch hook subassembly, door sword latch hook, door sword rocker subassembly, latch hook extension spring, copper wire rope, hexagon nut, spring washer, plug, contact seat, interior sawtooth lock washer and third screw, door sword backplate subassembly one side internally mounted has door sword right side sword arm subassembly and door sword left side sword arm subassembly, door sword left side sword arm subassembly one end articulates there is short link assembly, short link assembly one end articulates there is long link assembly, door sword right side sword arm subassembly one end articulates there is the latch hook subassembly, the inside articulated door sword rocker subassembly that has of opposite side of door sword backplate subassembly, door sword rocker subassembly one end is connected with door sword backplate subassembly through the latch hook extension spring, door sword rocker subassembly one side is installed the door sword latch hook.

The door vane assembly structure is suitable for an SK41 car door, and the structure is simple in latch hook design, so that the door vane latch hook is easy to damage. The design of the knife arm is not flexible in rotation, and dust easily enters the elevator in the running process, so that the knife arm is blocked in movement.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. In view of this, the utility model aims at providing a long-life door knife tackle spare mainly embodies in the nimble aspect of motion of tool arm, can increase of service life, and the tool arm floats in a flexible way.

In order to solve the technical problem, the technical scheme of the utility model is that: a long-life door knife assembly comprises a bottom plate latch hook plate riveting assembly, a rocker assembly, a door knife connecting rod assembly and a door knife latch hook, wherein the rocker assembly is rotatably connected to the door knife connecting rod assembly; wherein the content of the first and second substances,

under the state that the door knife lock hook is opened, the potential energy of the lock hook tension spring is reduced, the two knife arms are automatically folded under the action of gravity, and under the state that the door knife lock hook is locked, the lock hook tension spring pulls the rocker assembly to enable the two knife arms to overcome the elasticity to be opened.

As a specific aspect of the present invention, it may be preferable that: the distance A between the two cutter arms in the opening state is controlled to be 68-70mm, and the distance A between the two cutter arms in the closing state is controlled to be 44.5-46.5 mm.

As a specific aspect of the present invention, it may be preferable that: and a semicircular groove for abdicating is arranged at the pivot joint position of the short connecting rod on the inner side of the cutter arm.

As a specific aspect of the present invention, it may be preferable that: the middle rotating point of the short connecting rod deviates from the central position.

As a specific aspect of the present invention, it may be preferable that: a polyurethane limiting sleeve is fixed on the rocker assembly and used for abutting against the rear end part of the door knife locking hook.

The utility model discloses technical effect mainly embodies in following aspect:

1. the structure has a reliable operation effect, can realize the opening and closing of the two knife arms by utilizing a parallelogram structure, achieves a reliable state maintaining effect by utilizing a lever principle and an eccentric design and by means of the gravity of the knife arms, and automatically maintains the two knife arms in a furled state under the state that the door knife latch hook is opened because the lengths of the force arms of the knife arms on the left side and the right side are different due to the eccentric design of the middle rotating fulcrum of the end connecting rod;

2. the structure is controlled by the lock hook tension spring, and the knife arm moves more flexibly and freely;

3. the structure is simplified, the maintenance is easy, and the cost is reduced.

Drawings

FIG. 1 is a front view of the structure of the embodiment;

FIG. 2 is a side view of the structure of FIG. 1;

FIG. 3 is a rear view of FIG. 1;

fig. 4 is a perspective view of fig. 1.

Reference numerals: 1. a bottom plate latch plate riveting component; 2. a rocker assembly; 3. a door vane connecting rod assembly; 4. a door knife latch hook; 5. a polyurethane stop collar; 6. a bushing; 7. a limiting sleeve; 8. an unlocking plate; 9. a lock hook tension spring; 10. a plug virtual component; 11. a steel wire rope guide hole sheath; 12. a circlip for shaft a; 13. a circlip b for shaft; 14. a circlip for shaft c; 15. a socket head cap screw; 16. a flat washer a; 17. a spring washer; 20. a cross recessed pan head screw a; 21. a flat washer b; 22. a spring washer; 23. a hexagonal nut; 24. a cross-recessed pan head self-tapping screw; 25. a wire rope; 26. a sleeve; 27. cross recessed pan head screw b.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention so that the technical solution of the present invention can be more easily understood and grasped, and should not be construed as limiting the present invention.

Example (b):

referring to fig. 1 and 2, a long-life door knife assembly comprises a bottom plate latch hook plate riveting assembly 1, a rocker assembly 2, a door knife connecting rod assembly 3 and a door knife latch hook 4, wherein the rocker assembly 2 is rotatably connected to the door knife connecting rod assembly 3, the door knife connecting rod assembly 3 comprises two short connecting rods and two knife arms, the two short connecting rods and the end parts of the two knife arms are pivoted to form a parallelogram structure, the two short connecting rods are rotatably connected to the bottom plate latch hook plate riveting assembly 1, the rocker assembly 2 drives one short connecting rod to rotate, the door knife latch hook 4 is pivoted to the edge of the bottom plate latch hook plate riveting assembly 1, and the rear end part of the door knife latch hook 4 is connected with the rocker assembly 2 through a latch hook tension spring 9.

In the use state:

under the state that the door knife lock hook 4 is opened, the potential energy of the lock hook tension spring 9 is reduced, and the two knife arms are automatically folded under the action of gravity, and under the state that the door knife lock hook 4 is locked, the lock hook tension spring 9 pulls the rocker assembly 2 to enable the two knife arms to overcome the elasticity to be opened.

The distance A between the two cutter arms in the open state is controlled to be 68-70mm, and the distance A between the two cutter arms in the closed state is controlled to be 44.5-46.5 mm.

The inner side of the knife arm is provided with a semicircular groove for abdicating at the pin joint position of the short connecting rod. The semi-circular groove makes the cutter arm assembly easier.

The middle rotation point of the short connecting rod deviates from the central position. This project organization has reliable operation effect, can utilize the parallelogram structure to realize opening and shutting of two arms, utilizes lever principle and eccentric design, reaches reliable state with the help of the gravity of arm self and keeps the effect, because the eccentric design of the middle pivot of rotating of end connecting rod to the arm of force length of the arm of force on the left and right sides arm of knife differs, so with two arms automatic stay in the state of drawing in under door sword latch hook 4 open mode.

A polyurethane limiting sleeve 5 is fixed on the rocker component 2, and the polyurethane limiting sleeve 5 is used for abutting against the rear end part of the door knife locking hook 4. This design can improve rocker assembly 2 life.

Other structures are based on fig. 1 and fig. 2, and are shown by referring to fig. 3 and fig. 4, in fig. 2 and fig. 4, a polyurethane stop collar 5 is illustrated, which is made of polyurethane and is sleeved in an installation manner. The same is true for the bushing 6 and the stop collar. The plug dummy assembly 10 is secured to the bottom plate latch plate rivet assembly 1 by cross recessed pan head screws a20, flat washer b21 and spring washer 2217. The steel wire rope 25 guide hole sheath 11 is fixed on the edge of the bottom plate latch plate riveting component 1 and used for assisting the limiting of the pulling action of the steel wire rope 25.

The unlocking plate 8 is rotatably connected to the bottom plate latch plate rivet assembly 1 by a circlip a12 for a shaft. The end of the unlocking plate 8 is fixedly connected with a steel wire rope 25 through a hexagon nut 23. The circlip b13 for the shaft is fixed to the bush 6 to fix the bush 6. The elastic retainer ring c14 for the shaft is used for fixedly connecting the polyurethane stop collar 5 and fixing the polyurethane stop collar 5. The socket head cap screw 15, the flat washer a16 and the spring washer 2217 are used for fixing and installing a bearing part on the door vane connecting rod assembly 3, so that the door vane connecting rod assembly 3 is fixed. The rotation of the door knife connecting rod assembly 3 is realized through a bearing part of the door knife connecting rod assembly. The ends of the cable 25 are secured to each other by the sleeve 26 and cross-recessed pan head screws b 27.

The core function of the technical scheme of the design is as follows: the opening and closing of the two knife arms can be realized by utilizing a parallelogram structure, a reliable state keeping effect is achieved by means of the gravity of the knife arms by utilizing a lever principle and an eccentric design, and due to the eccentric design of the middle rotating fulcrum of the end connecting rod, the lengths of the force arms of the knife arms on the left side and the right side are different, so that the two knife arms are automatically kept in a folded state under the opening state of the door knife latch hook 4, the structure is controlled by utilizing the latch hook tension spring 9, and the knife arms move more flexibly; the structure is simplified, the maintenance is easy, and the cost is reduced.

Of course, the above is only a typical example of the present invention, and besides, the present invention can also have other various specific embodiments, and all technical solutions adopting equivalent replacement or equivalent transformation are all within the scope of the present invention as claimed.

Claims

1. A long-life door knife assembly comprises a bottom plate lock hook plate riveting assembly, a rocker assembly, a door knife connecting rod assembly and a door knife lock hook, and is characterized in that the rocker assembly is rotatably connected to the door knife connecting rod assembly, the door knife connecting rod assembly comprises two short connecting rods and two knife arms, the end parts of the two short connecting rods and the two knife arms are pivoted to form a parallelogram structure, the two short connecting rods are rotatably connected to the bottom plate lock hook plate riveting assembly, the rocker assembly drives one short connecting rod to rotate, the door knife lock hook is pivoted to the edge of the bottom plate lock hook plate riveting assembly, and the rear end part of the door knife lock hook is connected with the rocker assembly through a lock hook tension spring; wherein the content of the first and second substances,

2. The long life door vane assembly of claim 1, wherein the distance a between said two vane arms in the open position is controlled to be 68-70mm, and the distance a between said two vane arms in the closed position is controlled to be 44.5-46.5 mm.

3. The long life door vane assembly of claim 1, wherein a semicircular groove for abduction is provided at the pivot position of the short link at the inner side of the vane arm.

4. The long life door vane assembly of claim 3 wherein said short link intermediate pivot point is off center.

5. The long life door vane assembly of claim 1, wherein said rocker assembly has a polyurethane stop collar affixed thereto for abutting against the rear end of the door vane latch hook.