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CN-224213938-U - Stroke compensation spring bolt mechanism

CN224213938UCN 224213938 UCN224213938 UCN 224213938UCN-224213938-U

Abstract

The utility model provides a travel compensation spring bolt mechanism which comprises a spring bolt, a lock body, a first connecting rod base, a second connecting rod base, a first connecting rod, a second connecting rod and a compression spring, wherein the first connecting rod base is fixed in a central hole of a plane end of the spring bolt, the second connecting rod base is fixed in a central hole of a plane end of the lock body, two ends of the first connecting rod are respectively hinged with the first connecting rod base and the second connecting rod base, two ends of the second connecting rod are respectively hinged with the first connecting rod base and the second connecting rod base to form a four-bar mechanism, two ends of the compression spring are provided with vertical folded edges with holes and are respectively fixed on the side surfaces of the spring bolt and the lock body, when the spring bolt is subjected to transverse force, the compression spring is bent and deformed to compensate displacement, and meanwhile the four-bar mechanism follows, and when the spring bolt is recovered, the connecting rod mechanism limits the spring to stretch and drives the spring bolt to reset, so that transverse impact load on an inner shaft of the lock body is obviously reduced, and service life of the lock is prolonged.

Inventors

  • GAO CHENGJU
  • WAN XIAOQI
  • HOU YULIANG

Assignees

  • 上海交慧通达智能科技有限公司

Dates

Publication Date
20260508
Application Date
20250709

Claims (7)

  1. 1. A travel compensation deadbolt mechanism, comprising: The lock comprises a lock tongue (1), a lock body (6), a first connecting rod base (2), a second connecting rod base, a first connecting rod (3), a second connecting rod (8) and a compression spring (4); The first connecting rod base (2) is fixed in a central hole at the plane end of the lock tongue (1) through threaded connection; The second connecting rod base is fixed in a central hole at the plane end of the lock body (6) through threaded connection; two ends of the first connecting rod (3) are hinged with the first connecting rod base (2) and the second connecting rod base through pins respectively; Two ends of the second connecting rod (8) are respectively hinged with the first connecting rod base (2) and the second connecting rod base through pins to form a four-bar mechanism, wherein the lengths of the first connecting rod and the second connecting rod are equal; The two ends of the compression spring (4) are provided with vertical folds with holes, and the vertical folds are respectively fixed on the side surfaces of the lock tongue (1) and the lock body (6) through fasteners; When the bolt (1) is subjected to transverse force, the compression spring (4) is bent and deformed to compensate displacement, meanwhile, the four-bar linkage mechanism is driven, and when the bolt (1) is recovered, the four-bar linkage mechanism limits the spring to stretch and deform and drives the bolt to reset.
  2. 2. The travel compensation spring bolt mechanism according to claim 1, wherein the folded edge of the compression spring (4) is concentric with the fixed holes of the spring bolt (1) and the lock body (6), and the spring deformation direction is linked with the movement direction of the spring bolt through screw locking.
  3. 3. The travel compensation bolt mechanism according to claim 1, characterized in that in the four-bar mechanism the first link (3) and the second link (8) are arranged in a spatial cross, the length of which limits the extension travel of the compression spring (4).
  4. 4. The travel compensation bolt mechanism according to claim 1, wherein a waterproof cover (10) is sleeved outside the lock body (6), the lock body (6) can vertically move along the waterproof cover (10), the waterproof cover (10) is fixed on the door body, and an electric control mechanism for driving the lock body (6) to lift is arranged inside the waterproof cover.
  5. 5. The travel compensation bolt mechanism according to claim 1, further comprising a lock box (11), wherein the lock box (11) is fixed on a door frame and corresponds to the position of the waterproof cover (10), and the bolt (1) is inserted into the lock box (11) to realize locking under the driving of the lock body (6).
  6. 6. The stroke compensation spring bolt mechanism according to claim 1, wherein the compression spring (4) is of a rectangular structure, and is tightly attached to the spring bolt (1) and the lock body (6) in a reset state, so that the spring bolt and the lock body are kept in linear alignment.
  7. 7. The travel compensation bolt mechanism according to claim 1, wherein the compression spring (4) is arranged around the outer side of the four-bar mechanism consisting of the first connecting rod (3) and the second connecting rod (8) to form an outer spring and inner connecting rod nesting structure.

Description

Stroke compensation spring bolt mechanism Technical Field The utility model relates to the technical field of intelligent passing door automatic bolt locks, in particular to a travel compensation bolt mechanism. Background The large-scale vertical hinged door automatic system especially factory building or storage gate, when having sealed requirement, the tightening up of door crack is the problem that must solve, at the in-process of inserting the lock box through electronic spring bolt, the gate is in the stopped state, and wind-force or external force impression are received to the gate this moment, and the door can rock, leads to the spring bolt to fail to aim at the lock box completely and inserts, and the horizontal force that the spring bolt received is big, leads to the damage of the internal shaft of lock easily, for avoiding this kind of circumstances, adopts the flexibility of spring and the linkage nature of inside connecting rod, compensates the stroke compensation of horizontal position, has guaranteed the life of lock body. Disclosure of utility model The utility model aims to solve the problems and provide a door lock structure which can ensure that a lock tongue can still be accurately inserted into a lock box when a door body shakes and avoid damage of an internal mechanism. In order to achieve the above purpose, the utility model provides a travel compensation spring bolt mechanism, which comprises a spring bolt, a lock body, a first connecting rod base, a second connecting rod base, a first connecting rod, a second connecting rod and a compression spring; The first connecting rod base is fixed to a central hole at the plane end of the lock tongue through threaded connection; the second connecting rod base is fixed in a central hole at the plane end of the lock body through threaded connection; Two ends of the first connecting rod are hinged with the first connecting rod base and the second connecting rod base through pins respectively; two ends of the second connecting rod are respectively hinged with the first connecting rod base and the second connecting rod base through pins to form a four-bar mechanism, wherein the lengths of the first connecting rod and the second connecting rod are equal; the two ends of the compression spring are provided with vertical folded edges with holes, and the vertical folded edges are respectively fixed on the side surfaces of the lock tongue and the lock body through fasteners; when the spring bolt is recovered, the connecting rod mechanism limits the spring to stretch and deform and drives the spring bolt to reset. Furthermore, the folded edge of the compression spring is concentric with the fixing holes of the lock tongue and the lock body, and the spring deformation direction and the lock tongue movement direction are linked through screw locking. Further, in the four-bar mechanism, the first and second links are arranged in a space crossing manner, and the length thereof limits the extension stroke of the compression spring. Furthermore, the lock body is sleeved with a waterproof cover shell, the lock body can vertically move along the waterproof cover shell, the waterproof cover shell is fixed on the door body, and an electric control mechanism for driving the lock body to lift is arranged in the waterproof cover shell. Further, the lock box is fixed on the door frame and corresponds to the waterproof cover shell in position, and the lock tongue is inserted into the lock box to realize locking under the driving of the lock body. Furthermore, the compression spring is of a rectangular structure, and is tightly attached to the lock tongue and the lock body in a reset state, so that the lock tongue and the lock body are kept in linear alignment. Further, the compression spring is arranged on the outer side of the four-bar mechanism formed by the first connecting bar and the second connecting bar in a surrounding mode, and a nested structure of an outer spring and an inner connecting bar is formed. Further, the length of the first connecting rod and the second connecting rod is larger than the free height' of the compression spring, and the stretching is limited by the physical length of the connecting rods. Compared with the prior art, the utility model has the advantages that: The utility model constructs a spring and connecting rod dual-compound mechanism by utilizing the flexibility of the spring and the linkage property of the internal connecting rod, and hinges two groups of connecting rods with equal length at the center of the spring bolt in a space crossing mode to form a parallelogram moving chain (four-connecting rod mechanism) hidden in the spring, when the spring bolt is impacted by wind power to transversely deviate, the spring bends, deforms and absorbs displacement, and simultaneously the crossed connecting rods synchronously rotate around the hinged pin, so that the parallelogram structure instantly adjusts the angle, when the external