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CN-224228387-U - Back-locking structure of handle lock

CN224228387UCN 224228387 UCN224228387 UCN 224228387UCN-224228387-U

Abstract

The utility model discloses a counter lock structure of a handle lock, which comprises an inner handle seat, an inner handle, an outer handle seat and an outer handle, wherein a counter lock assembly is arranged in the inner handle and comprises a counter lock bolt, a return spring and a counter lock knob which is rotatably arranged on the inner handle, the counter lock bolt is arranged in the inner handle in a vertical moving mode, the lower end portion of the counter lock bolt abuts against the return spring, the upper end portion of the counter lock bolt is matched with the counter lock knob, the lower end portion of the counter lock knob is provided with a counter lock cam, the counter lock knob is rotated, the counter lock cam downwards extrudes and drives the lower end portion of the counter lock bolt to penetrate through the inner handle and be inserted into a locking groove on the inner handle seat, the counter lock bolt firmly locks the inner handle on the inner handle seat, the outer handle is connected with the inner handle through a square shaft, meanwhile, the problem that the existing door lock is easy to move due to locking balls, a blocking condition is caused, and smoothness of locking and unlocking operation of the door lock is guaranteed is solved.

Inventors

  • WEI JISHENG

Assignees

  • 广东壹斯特五金科技有限公司

Dates

Publication Date
20260512
Application Date
20250530

Claims (10)

  1. 1. The back locking structure of the handle lock comprises an inner handle rotationally arranged on an inner handle seat and an outer handle rotationally arranged on an outer handle seat, wherein the inner handle and the outer handle are linked through a square shaft; The lower end of the back locking knob is provided with a back locking cam matched with the back locking bolt, the back locking knob is rotated, the back locking cam extrudes downwards and drives the lower end of the back locking bolt to penetrate out of the inner handle and insert into the locking groove on the inner handle seat, and the back locking bolt simultaneously compresses the reset spring downwards.
  2. 2. The back lock structure of a handle lock according to claim 1, wherein the upper end of the back lock plug is spirally provided with a mating surface, and the back lock cam moves along the mating surface; The lower end part of the back locking bolt is provided with two bolt pins, and the reset spring is arranged between the two bolt pins.
  3. 3. The back lock structure of claim 2, wherein the lower end of the inner handle is provided with a through hole for the back lock bolt to pass through, and the through hole is arranged corresponding to the locking groove.
  4. 4. The back lock structure of a handle lock according to claim 1, 2 or 3, wherein the knob portion of the back lock knob is provided with a back lock positioning groove and an unlock positioning groove; The inner handle is provided with a positioning assembly, the positioning assembly comprises a positioning spring and a positioning ball which are arranged in the inner handle mounting hole from bottom to top, and the positioning spring drives the positioning ball to be matched with the anti-locking positioning groove or the unlocking positioning groove so as to lock the anti-locking knob at the anti-locking position or the unlocking position.
  5. 5. The back lock structure of a handle lock according to claim 4, wherein the upper end of the inner handle is provided with a limit groove, the lower end surface of the knob is provided with a limit block arranged in the limit groove, and the limit block is matched with the limit groove to limit the rotation angle of the back lock knob.
  6. 6. The back lock structure of a handle lock according to claim 5, wherein the knob portion is provided with a plurality of anti-slip grooves circumferentially on a side surface thereof.
  7. 7. A counter lock structure of a handle lock according to claim 1, 2 or 3, wherein a lock core is arranged in the outer handle, and the lock core is connected with a counter lock knob through a linkage bar.
  8. 8. The back lock structure of a handle lock according to claim 7, wherein a lock core cover is rotatably arranged on the end part of the outer handle, a rotating shaft is eccentrically arranged at the lower end of the lock core cover, and a mounting spring is sleeved on the rotating shaft; the lower end of the mounting spring is abutted against the rotating shaft, and the upper end of the mounting spring is abutted against the outer handle.
  9. 9. The back lock structure of a handle lock according to claim 8, wherein the holding part of the outer handle is hollow and provided with a holding cavity for holding a key, an end cover is detachably arranged at the end part of the holding cavity, and a slot for inserting the key is arranged at the inner side of the end cover.
  10. 10. The back lock structure of claim 9, wherein the inner side wall of the accommodating cavity is provided with an inner thread, the end cover is provided with an outer thread, and the end cover is connected to the outer handle in a threaded manner.

Description

Back-locking structure of handle lock Technical Field The utility model relates to the technical field of door locks, in particular to a back locking structure of a handle lock. Background The door lock is a common door protection device for preventing illegal invasion of personnel outside the door, and generally comprises a lock body, an inner handle, an outer handle and a locking mechanism for locking the door lock, wherein the general locking mechanism is used for locking the door handle on a handle seat so that people cannot unlock the door by rotating the door handle; The utility model discloses a worm type anti-lock mechanism of a door lock, which is disclosed in Chinese patent publication No. CN216043101U, and comprises a square shaft sleeve, a locking cam and a locking ball matched with the locking cam, wherein one end part of the square shaft sleeve is fixedly connected with an outer door handle, the other end part of the square shaft sleeve passes through a locking seat of an outer panel to be connected with the square shaft, the locking cam is rotationally arranged in Fang Zhoutao, one end part of the locking cam is connected with a rotating rod, when the rotating rod drives the locking cam to rotate, the locking cam drives the locking ball to press outwards, so that part of the locking ball passes through a ball hole of the square shaft sleeve to be arranged in a locking groove of the locking seat, two cam surfaces matched with the locking ball are arranged on the locking cam, and the cam surfaces are symmetrically arranged on the locking cam, and penetrate out of the ball hole of the square shaft sleeve to be arranged on the locking seat through the ball hole of the locking ball, so that the outer door handle is locked on the locking seat; The door lock can realize the functions of locking and unlocking the door lock by the back and forth movement of the locking ball relative to the locking groove, but the structure is easy to cause the blocking phenomenon due to the fact that the locking ball cannot smoothly move, and the smoothness of the door lock locking and unlocking operation is affected. Disclosure of utility model Aiming at the defects existing in the prior art, the utility model aims to provide a back locking structure of a handle lock. In order to achieve the above purpose, the present utility model provides the following technical solutions: The back locking structure of the handle lock comprises an inner handle rotationally arranged on an inner handle seat and an outer handle rotationally arranged on an outer handle seat, wherein the inner handle and the outer handle are linked through a square shaft; The lower end of the back locking knob is provided with a back locking cam matched with the back locking bolt, the back locking knob is rotated, the back locking cam extrudes downwards and drives the lower end of the back locking bolt to penetrate out of the inner handle and insert into the locking groove on the inner handle seat, and the back locking bolt simultaneously compresses the reset spring downwards. The utility model further provides that the upper end part of the back locking bolt is spirally provided with a matching surface, and the back locking cam moves along the matching surface; The lower end part of the back locking bolt is provided with two bolt pins, and the reset spring is arranged between the two bolt pins. The utility model further provides that the lower end of the inner handle is provided with a penetrating hole for the anti-locking bolt to penetrate out, and the penetrating hole is arranged corresponding to the locking groove. The utility model further provides that the knob part of the back locking knob is provided with a back locking positioning groove and an unlocking positioning groove; The inner handle is provided with a positioning assembly, the positioning assembly comprises a positioning spring and a positioning ball which are arranged in the inner handle mounting hole from bottom to top, and the positioning spring drives the positioning ball to be matched with the anti-locking positioning groove or the unlocking positioning groove so as to lock the anti-locking knob at the anti-locking position or the unlocking position. The utility model further provides that the upper end part of the inner handle is provided with a limit groove, the lower end surface of the knob part is provided with a limit block arranged in the limit groove, and the limit block is matched with the limit groove to limit the rotation angle of the back locking knob. The utility model further provides that a plurality of anti-slip grooves are circumferentially arranged on the side face of the knob part. The utility model further provides that a lock cylinder is arranged in the outer handle, and the lock cylinder is connected with the back lock knob through a linkage bar. The utility model further provides that a lock core cover is rotatably arranged on the end part of the outer handle,