CN219952952U

CN219952952U - Back locking structure of door lock

Info

Publication number: CN219952952U
Application number: CN202321316587.8U
Authority: CN
Inventors: 黄利明
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-05-29
Filing date: 2023-05-29
Publication date: 2023-11-03
Anticipated expiration: 2033-05-29

Abstract

The utility model discloses a back locking structure of a door lock, in particular to the technical field of door locks, which comprises a handle suitable for being arranged on the door, wherein a latch is arranged in the handle, an operating lever is movably inserted in the handle in the length direction, the operating lever is used for pushing the latch to the direction of the door so as to enable the latch to lock the handle and the door together, the latch is reset to the direction far away from the door through an elastic part, the operating lever is arranged at one side of the handle close to the door, one end of the operating lever extends to the outer side of the handle, a square rod for linking a lock body to unlock is inserted in the handle, and the handle and the square rod synchronously rotate. According to the utility model, the handle and the door are locked together by pushing the bolt through the operating rod, when the door is opened outwards, the handle in the door can not rotate any more, so that the purpose of back locking is realized, the structure is simple, the operation is convenient, and the operating rod is arranged on one side of the handle close to the door in a transverse poking way, so that a person can not observe the operating rod, and the door is more attractive.

Description

Back locking structure of door lock

Technical Field

The utility model relates to the technical field of door locks, in particular to a back locking structure of a door lock.

Background

The safety door lock is an important gateway for protecting household property, so the anti-theft performance is the biggest characteristic of the safety door lock, and the types of the door locks are changed with the progress of time and technology. Generally, a door lock structure includes a lock cylinder, a lock tongue, a lock body, a handle, and the like, and a square bar is an important part of the lock body, and can link the lock body to perform unlocking operations.

The existing door lock structure usually uses a rotatable knob, which is arranged on a door lock panel or a handle, and an ecological door lock back-locking structure disclosed in the patent of utility model (CN 218467347U) is that the knob is arranged on the handle, and in either way, the structure is complex, and the unlocking knob can be directly seen, so that the problem of unsightly appearance is caused.

Disclosure of Invention

In order to overcome the above-mentioned drawbacks of the prior art, the present utility model provides a back locking structure of a door lock.

The utility model provides a lock structure, includes the handle that is suitable for installing on the door, and the internally mounted of handle has the bolt, and the activity grafting has the action bars on the length direction of handle, and the action bars is used for promoting the bolt to the direction of door so that the bolt will handle and lock together, and the bolt resets through elastomeric element to the direction of keeping away from the door, and the action bars is installed in the outside that one side and one end that the handle is close to the door extend to the handle.

Preferably, the square rod for interlocking the lock body to unlock is inserted into the handle, and the handle and the square rod synchronously rotate.

Preferably, the door locking device further comprises a fixing seat fixedly arranged on the door, a jack is formed in the fixing seat, and when the operating rod pushes the bolt to the direction of the door, the bolt is inserted into the jack so as to lock the handle and the door together.

Preferably, the bottom of the latch has an inclined surface, and the lever pushes the latch by pushing the inclined surface.

Preferably, the control rod is provided with a guide groove, and the handle is provided with a positioning piece with one end inserted into the guide groove.

Preferably, the positioning piece is a positioning screw which is connected to the handle in a threaded manner.

Preferably, the end of the lever located outside the handle has a projection.

Preferably, the elastic component is a spiral spring, the spiral spring is sleeved outside the bolt, a fixing sleeve is arranged in the handle, the bolt is arranged in the middle of the fixing sleeve, and two ends of the elastic component are respectively propped against the bolt and the fixing sleeve.

Preferably, the control lever is provided with an unlocking inclined plane, an unlocking pin is arranged in the square rod, and the unlocking inclined plane is pushed by poking the unlocking pin outside the door, so that the control lever moves to the outer side of the handle to be separated from the pin for unlocking

The utility model has the technical effects and advantages that:

1. the handle and the door are locked together by pushing the bolt through the operating lever, when the door is opened outwards, the handle in the door can not rotate any more, so that the purpose of back locking is achieved, the structure is simple, the operation is convenient, the operating lever is arranged on one side of the handle close to the door, and the operating lever is prevented from being observed by a person in a transversely poking mode, so that the door is attractive.

2. Through the square rod and the unlocking pin, under the condition that the handle and the door lock can not be opened when the handle and the door lock are locked at the outside due to the fact that the operating rod is clamped by mistake, the unlocking pin is poked inwards through the small hole through thin objects such as toothpicks or steel wires outside the door, and the operating rod is moved outwards to unlock.

Drawings

Fig. 1 is a schematic diagram of the overall structure of an embodiment.

Fig. 2 is an exploded view of an embodiment.

Fig. 3 is a top view of fig. 1.

Fig. 4 is a cross-sectional view at A-A in fig. 3.

The reference numerals are:

1. a handle; 11. a fixed sleeve; 2. a plug pin; 21. an inclined surface; 3. a joystick; 31. a protruding portion; 32. a guide groove; 33. unlocking the inclined plane; 4. an elastic member; 5. a fixing seat; 51. a jack; 6. a positioning piece; 7. square rods; 71. and unlocking the lock pin.

Detailed Description

Examples

As shown in fig. 1 to 4, the present embodiment provides a back locking structure of a door lock, including a handle 1 adapted to be mounted on the door, a latch 2 is mounted in the handle 1, a lever 3 is movably inserted in the length direction of the handle 1, the lever 3 is used for pushing the latch 2 to the door direction to lock the handle 1 and the door together, the latch 2 is reset in a direction away from the door through an elastic member 4, and the lever 3 is mounted on one side of the handle 1 close to the door and one end extends to the outside of the handle 1.

In the above, as shown in fig. 4, the elastic component 4 is a spiral spring, the spiral spring is sleeved outside the bolt 2, the handle 1 is internally provided with the fixing sleeve 11, the bolt 2 is arranged in the middle of the fixing sleeve 11, and two ends of the elastic component 4 respectively abut against the bolt 2 and the fixing sleeve 11.

The square rod 7 for interlocking the lock body to unlock is inserted in the handle 1, the handle 1 and the square rod 7 synchronously rotate, the handle 1 is installed in a door, the square rod 7 is required to rotate when the door is opened outwards, the handle 1 and the door are locked together by pushing the bolt 2 through the operating rod 3, the handle 1 in the door can not rotate any more when the door is opened outwards, thereby realizing the purpose of back locking, during unlocking, the operating rod 3 is pulled outwards, the bolt 2 resets under the action of the elastic component 4 to unlock, the structure is simple, the operation is convenient, the operating rod 3 is installed on one side of the handle 1 close to the door, and the operating rod 3 is not observed by people in a transverse poking mode, so that the door is more attractive.

In the above, as shown in fig. 4, a fixing seat 5 is further provided for being fixedly installed on the door, the handle 1 is provided at a position of the fixing seat 5, a jack 51 is provided on the fixing seat 5, and when the operating lever 3 pushes the latch 2 to the door direction, the latch 2 is inserted into the jack 51 to lock the handle 1 and the door together.

In the above, as shown in fig. 4, the bottom of the latch 2 has an inclined surface 21, and the lever 3 pushes the latch 2 by pushing the inclined surface 21. The inclined surface 21 may be a conical surface, and the end of the lever 3 pushes the conical surface to move the latch 2, and after the latch is locked, the tip of the conical surface abuts against the upper surface of the lever 3, so that the latch 2 cannot move and reset.

In the above, as shown in fig. 4, the lever 3 is provided with a guide groove 32, the handle 1 is provided with a positioning member 6 having one end inserted into the guide groove 32, specifically, the positioning member 6 is a positioning screw, the positioning screw is screwed on the handle 1, and when the lever 3 moves, the positioning member 6 can perform a guiding function, thereby stably moving the lever 3,

in the above, in order to be able to easily dial the lever 3, as shown in fig. 4, one end of the lever 3 located outside the handle 1 is provided with a protruding portion 31.

Working principle: when the back locking is needed, the operating lever 3 is pushed towards the inner side of the handle 1, the end part of the operating lever 3 pushes the inclined surface 21 at the bottom of the bolt 2, so that the bolt 2 moves towards the door to be inserted into the jack 51, the purpose of back locking is achieved, the back locking state is as shown in fig. 4, and the door cannot be opened outside at the moment. When the unlocking is needed, the operating rod 3 is shifted outwards, after the end part of the operating rod 3 is separated from the bolt 2, the bolt 2 moves away from the door under the action of the elastic part 4 so as to move out of the jack 51, and at the moment, the handle outside the door or inside the door can be rotated to open the door.

In this embodiment, as shown in fig. 2 and 4, the lever 3 has an unlocking slope 33, an unlocking pin 71 is provided inside the square bar 7, and the unlocking slope 33 is pushed by pulling the unlocking pin 71 outside the door, so that the lever 3 moves to the outside of the handle 1 to disengage from the latch 2 for unlocking. The purpose of this arrangement is to prevent the indoor false locking of the operating lever 3, for example, the indoor child, and in the case of no ability to open the door, the unlocking pin 71 can be moved outside the door to unlock the operating lever 3, that is, a small hole is provided outside the door, and when the operation is performed, the unlocking pin 71 is moved inwards by passing a thin object such as a toothpick or a steel wire through the small hole to move the operating lever 3 outwards to unlock the door.

Claims

1. A counter-locking structure for door locks, comprising a handle (1) adapted to be mounted on a door, characterized in that: the inside of handle (1) is installed bolt (2), movable grafting has control lever (3) on the length direction of handle (1), control lever (3) are used for promoting bolt (2) to the direction of door so that bolt (2) will handle (1) and lock together, bolt (2) are to the direction of keeping away from the door through elastomeric element (4) and reset, control lever (3) are installed in the outside that one side and one end that handle (1) is close to the door extend to handle (1).

2. The back locking structure of a door lock according to claim 1, wherein: a square rod (7) for interlocking the lock body to unlock is inserted in the handle (1), and the handle (1) and the square rod (7) synchronously rotate.

3. The back locking structure of a door lock according to claim 2, wherein: the door lock is characterized by further comprising a fixing seat (5) fixedly arranged on the door, a jack (51) is formed in the fixing seat (5), and when the bolt (2) is pushed to the direction of the door by the operating lever (3), the bolt (2) is inserted into the jack (51) so as to lock the handle (1) and the door together.

4. A counter-locking structure for a door lock according to any one of claims 1 to 3, wherein: the bottom of the bolt (2) is provided with an inclined surface (21), and the operating rod (3) pushes the bolt (2) by pushing the inclined surface (21).

5. A counter-locking structure for a door lock according to any one of claims 1 to 3, wherein: the control rod (3) is provided with a guide groove (32), and the handle (1) is provided with a positioning piece (6) with one end inserted into the guide groove (32).

6. The door lock counter-locking structure according to claim 5, wherein: the locating piece (6) is a locating screw which is connected to the handle (1) in a threaded manner.

7. A counter-locking structure for a door lock according to any one of claims 1 to 3, wherein: one end of the operating rod (3) positioned outside the handle (1) is provided with a protruding part (31).

8. A counter-locking structure for a door lock according to any one of claims 1 to 3, wherein: the elastic component (4) is coil spring, and the outside at bolt (2) is established to the coil spring cover, install fixed cover (11) in handle (1), bolt (2) set up the middle part at fixed cover (11), the both ends of elastic component (4) are supported respectively and are pressed on bolt (2) and fixed cover (11).

9. The back locking structure of a door lock according to claim 2, wherein: the unlocking inclined surface (33) is arranged on the operating rod (3), an unlocking pin (71) is arranged in the square rod (7), the unlocking inclined surface (33) is pushed by pulling the unlocking pin (71) outside a door, and the operating rod (3) moves to the outer side of the handle (1) to be separated from the bolt (2) for unlocking.