CN219241584U - Single-bolt lock body with back-locking function - Google Patents

Abstract

The utility model discloses a single-lock-tongue lock body with a back locking function, which comprises a lock shell, wherein a lock tongue is arranged on the lock shell in a sliding way through a lock rod, and a lock closing spring for driving the lock tongue to extend out of the lock shell is sleeved on the lock rod; the lock is characterized in that a counter-locking piece is arranged in the lock shell in a vertical sliding manner, and a driving piece for driving the counter-locking piece to slide upwards is rotatably arranged at a position close to the upper end part of the counter-locking piece; the lock shell is provided with an unlocking piece and a lock cylinder for driving the counter-locking piece to slide up and down at a position close to the lower end part of the counter-locking piece, and the counter-locking piece can drive the unlocking piece to swing so as to drive a lock tongue on the lock rod to retract into the lock shell; the lock core can drive the anti-locking piece to slide downwards and be staggered with the driving piece, so that the driving piece can not push the anti-locking piece to move; the door lock can realize the back locking function by only adopting one lock tongue, so that the private space of people is ensured; meanwhile, the volume of the door lock can be effectively reduced, the structure of the door lock is simplified, and the cost of the door lock is reduced.

Description

Single-bolt lock body with back-locking function

Technical Field

The utility model relates to the technical field of door locks, in particular to a single-bolt lock body with a back-locking function.

Background

The door lock is a necessary security device for preventing wind and theft, and an upper lock tongue and a lower lock tongue are arranged in a lock body of the door lock in order to realize the functions of wind prevention and theft prevention at the same time; however, the lock body of the double lock bolts needs to have a space for accommodating the upper lock bolts and the lower lock bolts, so that the volume and the size of the lock body are large, the structure of the door lock is complex, and the manufacturing cost is high; people reduce the manufacturing cost of the lock body in order to reduce the size of the lock body; the indoor lock is manufactured into a door lock with a single bolt, but the existing lock body with the single bolt has no back locking function; the door lock has no anti-theft function, and meanwhile, people outside the door can open the door because of no back locking function, so that the privacy of the people in the door cannot be guaranteed.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model aims to provide a single-bolt lock body with a back-locking function.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the single-lock-tongue lock body with the anti-lock function comprises a lock shell, wherein a lock tongue is arranged on the lock shell in a sliding manner through a lock rod, and a lock closing spring for driving the lock tongue to extend out of the lock shell is sleeved on the lock rod;

the lock is characterized in that a counter lock is arranged in the lock shell in a vertical sliding manner, a driving piece for driving the counter lock to slide upwards is rotatably arranged at the position close to the upper end part of the counter lock, and a reset tension spring for resetting the driving piece is connected to the driving piece;

the lock shell is provided with an unlocking piece and a lock cylinder for driving the counter-locking piece to slide up and down at a position close to the lower end part of the counter-locking piece, and the counter-locking piece can drive the unlocking piece to swing so as to drive a lock tongue on the lock rod to retract into the lock shell; the lock core can drive the anti-locking piece to slide downwards and be staggered with the driving piece, so that the driving piece can not push the anti-locking piece to move.

The utility model further provides that: the upper end of the back locking piece is provided with an abutting bending part and a back locking protruding part, the abutting bending part is obliquely arranged back to the driving piece and matched with the driving piece, and the back locking protruding part can slide downwards along with the back locking piece to abut against the rear side wall of the lock tongue to prevent the lock tongue from retracting into the lock shell.

The utility model further provides that: the front end of the lock tongue is provided with a safety groove matched with the anti-locking protruding part, and the anti-locking protruding part is inserted into the safety groove and can lock the lock tongue in the lock shell.

The utility model further provides that: the anti-lock is characterized in that a guide block is vertically arranged on the anti-lock piece, and a guide groove matched with the guide block is formed in the lock shell.

The utility model further provides that: the driving piece is provided with a limiting groove, a limiting rod is arranged in the lock shell, the driving piece is sleeved on the limiting rod through the limiting groove, and in the rotating process of the driving piece, the limiting rod is matched with the limiting groove to limit the rotating angle of the driving piece.

The utility model further provides that: the lower end of the back locking piece is provided with a pushing block matched with the unlocking piece, one end of the back locking piece, which is close to the pushing block, is provided with a clamping hook, which is matched with the clamping hook, a clamping groove is formed in the pushing block, and the clamping hook is hooked in the clamping groove, so that the pushing block is connected with the back locking piece.

The utility model further provides that: the push block is provided with a positioning ball and a positioning spring, and one end part of the positioning ball is arranged in a positioning hole of the lock shell by the positioning spring to lock the counter-locking piece on the lock shell.

The utility model further provides that: and a reset spring is arranged on the pushing block, and when the positioning ball is separated from the positioning hole, the reset spring can drive the counter lock to slide upwards.

The utility model further provides that: the pushing block is provided with a mounting groove for mounting the reset spring, and the upper end of the mounting groove is provided with an opening; the anti-lock piece slides upwards, and the extrusion plate on the lock shell enters the mounting groove from the opening and compresses the reset spring.

The utility model further provides that: the rear end part of the lock rod is sleeved with a positioning spring, one end part of the positioning spring is abutted against the lock shell, and the other end part of the positioning spring is abutted against the rear end part of the lock rod.

The utility model has the beneficial effects that: when the counter locking piece is in a non-counter locking state, a driving piece close to the upper end part of the counter locking piece can drive the counter locking piece to slide upwards, the lower end part of the counter locking piece drives the unlocking piece, the counter locking piece drives the lock rod to move backwards, and the lock rod drives the lock tongue to slide backwards and retract into the lock shell; the unlocking of the door lock is realized, and the unlocking operation is convenient;

when the lock tongue extends out of the lock shell and is matched with the buckling box on the door frame, the lock cylinder pushes the counter-locking piece to slide downwards, so that the counter-locking piece is staggered with the driving piece, and the driving piece cannot push the counter-locking piece to move; when the driving piece is rotated, the driving piece is in idle running, and cannot be linked with the counter-locking piece, so that counter-locking of the door leaf is realized, a person outside the door cannot open the door lock, the private space of the person in the room is ensured, and an anti-theft effect is realized; the door lock can realize the back locking function by only adopting one lock tongue, so that the private space of people is ensured; meanwhile, the volume of the door lock can be effectively reduced, the structure of the door lock is simplified, and the cost of the door lock is reduced.

Drawings

FIG. 1 is a schematic diagram of a single bolt lock body with a back locking function according to the present utility model;

FIG. 2 is a schematic diagram of a single bolt lock with anti-lock function according to the second embodiment of the present utility model;

FIG. 3 is a schematic view showing the internal structure of a single bolt lock body with a back locking function according to the present utility model;

FIG. 4 is a schematic view of a single bolt lock body with a locking mechanism according to the present utility model;

FIG. 5 is an exploded view of a single throw lock body with a counter lock feature of the present utility model;

FIG. 6 is a diagram showing the cooperation of the positioning balls and the positioning springs of a single-bolt lock body with a back locking function according to the present utility model;

FIG. 7 is a schematic view of a lock case of a single bolt lock body with a back locking function according to the present utility model;

FIG. 8 is a first view of the installation of a single bolt lock body with a back locking function of the present utility model on a lock rod;

FIG. 9 is a second view of the installation of a single bolt lock body with a back locking function on a lock rod;

reference numerals illustrate: 1. a lock case; 11. positioning holes; 12. a guide groove; 13. an extrusion plate; 14. a lock hole; 15. a limit rod; 16. an adjustment aperture; 2. a bolt; 21. a safety groove; 22. a lock lever; 221. a cross bearing hole; 23. a lock closing spring; 3. a counter lock; 31. the abutting bending part; 32. a pushing block; 321. positioning the ball; 322. a positioning spring; 323. a mounting groove; 3231. an opening; 324. a return spring; 325. a clamping groove; 326. a positioning spring; 33. a guide block; 34. a counter-locking boss; 35. a clamping hook; 4. a driving member; 41. a limit groove; 42. resetting the tension spring; 5. an unlocking member; 51. an abutting portion; 52. and (5) swinging the arm.

Detailed Description

A single bolt lock body with a counter lock feature according to the present utility model will be described in further detail with reference to figures 1 to 9.

The single-lock-tongue lock body with the anti-lock function comprises a lock shell 1, wherein a lock tongue 2 is slidably arranged on the lock shell 1 through a lock rod 22, a lock closing spring 23 for driving the lock tongue 2 to extend out of the lock shell 1 is sleeved on the lock rod 22, one end part of the lock closing spring 23 abuts against the lock tongue 2, and the other end part abuts against the lock shell 1; when the lock rod 22 drives the lock tongue 2 to slide backwards, the lock tongue 2 compresses the lock closing spring 23; the rear end part of the lock rod 22 is sleeved with a positioning spring 326, one end part of the positioning spring 326 is abutted against the lock shell 1, and the other end part is abutted against the rear end part of the lock rod 22; wherein the rear end of the lock rod 22 is provided with a cross bearing hole 221, and the lock shell 1 is provided with an adjusting hole 16 which is arranged opposite to the cross bearing hole 221; when the lock tongue 2 needs to be reversed, the cross screw driver stretches into the regulating hole 16 to be matched with the cross bearing hole 221, so that the lock rod 22 is pushed to move forwards, the lock tongue 2 stretches out of the lock shell 1 from the lock shell 1, the positioning spring 326 is compressed, and then the lock tongue 2 is rotated for 180 degrees to be reversed by rotating the cross screw driver; after reversing is finished and the cross screwdriver is loosened, the lock rod 22 drives the lock tongue 2 to reset under the action of the elastic force of the positioning spring 326, and the reversing operation of the lock tongue 2 is simple and convenient;

a counter lock 3 is arranged in the lock shell 1 in a vertical sliding manner, and a driving piece 4 for driving the counter lock 3 to slide upwards is rotatably arranged at a position close to the upper end part of the counter lock 3 in the lock shell 1; a guide block 33 is vertically arranged on the counter lock 3, and a guide groove 12 matched with the guide block 33 is arranged on the lock shell 1; so that the counter lock 3 slides up and down on the lock case 1 better; the driving piece 4 is linked with the door handle, and the driving piece 4 is connected with a reset tension spring 42 which can reset the driving piece 4;

the lock shell 1 is provided with an unlocking piece 5 and a lock cylinder for driving the counter lock piece 3 to slide up and down at a position close to the lower end part of the counter lock piece 3, the lock cylinder is arranged on a lock hole 14 in the lock shell 1, the counter lock piece 3 is linked with the lock cylinder, and the lock cylinder is driven by a key outside a door or a counter lock knob in the door;

when the door lock is in a non-back locking state and needs to be unlocked, the door handle is pressed down, the driving piece 4 can drive the back locking piece 3 to slide upwards, the lower end part of the back locking piece 3 drives the swinging arm 52 of the unlocking piece 5 to swing backwards and pushes the lock rod 22 to move backwards, the lock rod 22 drives the lock tongue 2 to slide backwards and retract into the lock shell 1, so that the unlocking of the door lock is realized, and the unlocking operation is convenient;

when the door lock needs to be locked, the lock cylinder is driven by the back locking knob or the key, the lock cylinder can push the back locking piece 3 to slide downwards, so that the back locking piece 3 is staggered with the driving piece 4, and the driving piece 4 cannot push the back locking piece 3 to move; when the door handle is pressed down, the driving piece 4 is idle, and the driving piece 4 and the counter-locking piece 3 cannot be linked, so that counter-locking of a door leaf is realized, a person outside the door cannot open the door lock, the private space of the person in the room is ensured, and an anti-theft effect is realized; when the back lock is required to be released, only the lock cylinder is required to be rotated reversely, and the lock cylinder pushes the back lock piece 3 to slide upwards, so that the back lock piece 3 is matched with the driving piece 4 again; the door lock can realize the back locking function by only adopting one lock tongue 2, thereby guaranteeing the private space of people; meanwhile, the volume of the door lock can be effectively reduced, the structure of the door lock is simplified, and the cost of the door lock is reduced.

In order to enable the counter lock 3 to better link with the driving piece 4, the upper end part of the counter lock 3 is provided with an abutting bending part 31 and a counter lock protruding part 34, and the abutting bending part 31 is obliquely arranged back to the driving piece 4 and is matched with the driving piece 4, so that the abutting bending part 31 is not contacted with the driving piece 4 in the downward sliding process of the counter lock 3, and interference between the counter lock 3 and the driving piece 4 is avoided; the locking piece 3 slides downwards, the locking protruding part 34 can be abutted against the rear side wall of the lock tongue 2, and the lock tongue 2 is prevented from retracting into the lock shell 1;

in order to avoid unexpected door closing under the action of external force in the door leaf opening state, the lock tongue 2 is impacted to the door frame, so that the lock tongue 2 is damaged; the front end of the lock tongue 2 is provided with a safety groove 21 matched with a locking convex part 34, and the locking convex part 32 is inserted into the safety groove 21 to lock the lock tongue 2 in the lock shell 1; namely, the lock tongue 2 is pressed inwards by hands to enable the lock tongue 2 to be in a state of retracting the lock shell 1, the locking piece 3 is driven to slide downwards by rotating the locking knob, and the locking protruding part 34 is inserted into the safety groove 21 to prevent the lock tongue 2 from sliding forwards to extend out of the lock shell 1; the locking of the retracted state of the lock tongue 2 is realized, and the lock tongue 2 is effectively protected.

The two sides of the lock tongue 2 are provided with the safety grooves 21, so that after the lock tongue 2 is changed, the lock tongue 2 still has the safety grooves 21 matched with the anti-locking convex parts 34, and the door lock can be suitable for door leaves with different door opening modes.

The driving piece 4 is provided with a limit groove 41, the lock shell 1 is internally provided with a limit rod 15, the driving piece 4 is sleeved on the limit rod 15 through the limit groove 41, and in the rotation process of the driving piece 4, the limit rod 15 is matched with the limit groove 41 to limit the rotation angle of the driving piece 4.

The lower end part of the counter lock 3 is provided with a pushing block 32 matched with the unlocking piece 5, the pushing block 32 and the counter lock 3 are arranged in a split mode, one end part of the counter lock 3, which is close to the pushing block 32, is provided with a clamping hook 35, the pushing block 32 is provided with a clamping groove 325 matched with the clamping hook 35, and the clamping hook 35 is hooked in the clamping groove 325 to enable the pushing block 32 to be connected with the counter lock 3; the split manufacturing is adopted, so that the production difficulty is reduced.

The pushing block 32 is provided with a positioning ball 321 and a positioning spring 322, and the positioning spring 322 enables one end part of the positioning ball 321 to be placed in the positioning hole 11 of the lock shell 1, so that the counter lock 3 is locked on the lock shell 1; when the counter lock 3 slides downwards, the positioning ball 321 slides into the positioning hole 11, and one end part of the positioning ball abuts against the lock shell 1 under the action of the positioning spring 322, so that the counter lock 3 can be always positioned at the counter lock position;

the pushing block 32 is provided with a mounting groove 323 for mounting the return spring 324, and the upper end of the mounting groove 323 is provided with an opening 3231; wherein the counter lock 3 slides upward, the pressing plate 13 of the lock case 1 enters the mounting groove 323 from the opening 3231 and compresses the return spring 324; when the counter lock knob is reversely rotated or driven by a key, the counter lock 3 slides upwards, the locking of the positioning ball 321 is overcome, and the positioning ball 321 is separated from the positioning hole 11, the return spring 324 can drive the counter lock 3 to slide upwards, the counter lock of the door lock is released, and the abutting bending part of the counter lock 3 can be matched with the driving piece 4 again.

The above description is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims (10)

1. A single-bolt lock body with a back-locking function is characterized in that: the lock comprises a lock shell, wherein the lock shell is provided with a lock tongue in a sliding way through a lock rod, and a lock closing spring for driving the lock tongue to extend out of the lock shell is sleeved on the lock rod;

the lock is characterized in that a counter lock is arranged in the lock shell in a vertical sliding manner, a driving piece for driving the counter lock to slide upwards is rotatably arranged at the position close to the upper end part of the counter lock, and a reset tension spring for resetting the driving piece is connected to the driving piece;

the lock shell is provided with an unlocking piece and a lock cylinder for driving the counter-locking piece to slide up and down at a position close to the lower end part of the counter-locking piece, and the counter-locking piece can drive the unlocking piece to swing so as to drive a lock tongue on the lock rod to retract into the lock shell; the lock core can drive the anti-locking piece to slide downwards and be staggered with the driving piece, so that the driving piece can not push the anti-locking piece to move.

2. The single bolt lock body with back locking function of claim 1, wherein: the upper end of the back locking piece is provided with an abutting bending part and a back locking protruding part, the abutting bending part is obliquely arranged back to the driving piece and matched with the driving piece, and the back locking protruding part can slide downwards along with the back locking piece to abut against the rear side wall of the lock tongue to prevent the lock tongue from retracting into the lock shell.

3. The single bolt lock body with back locking function of claim 2, wherein: the front end of the lock tongue is provided with a safety groove matched with the anti-locking protruding part, and the anti-locking protruding part is inserted into the safety groove and can lock the lock tongue in the lock shell.

4. A single bolt lock body with a back lock function according to claim 1 or 2 or 3, characterized in that: the anti-lock is characterized in that a guide block is vertically arranged on the anti-lock piece, and a guide groove matched with the guide block is formed in the lock shell.

5. A single bolt lock body with a back lock function according to claim 1 or 2 or 3, characterized in that: the driving piece is provided with a limiting groove, a limiting rod is arranged in the lock shell, the driving piece is sleeved on the limiting rod through the limiting groove, and in the rotating process of the driving piece, the limiting rod is matched with the limiting groove to limit the rotating angle of the driving piece.

6. A single bolt lock body with a back lock function according to claim 1 or 2 or 3, characterized in that: the lower end of the back locking piece is provided with a pushing block matched with the unlocking piece, one end of the back locking piece, which is close to the pushing block, is provided with a clamping hook, which is matched with the clamping hook, a clamping groove is formed in the pushing block, and the clamping hook is hooked in the clamping groove, so that the pushing block is connected with the back locking piece.

7. The single bolt lock body with back locking function of claim 6, wherein: the push block is provided with a positioning ball and a positioning spring, and one end part of the positioning ball is arranged in a positioning hole of the lock shell by the positioning spring to lock the counter-locking piece on the lock shell.

8. A single bolt lock according to claim 7 or claim 7, wherein: and a reset spring is arranged on the pushing block, and when the positioning ball is separated from the positioning hole, the reset spring can drive the counter lock to slide upwards.

9. The single-bolt lock body with back-locking function according to claim 8, wherein: the pushing block is provided with a mounting groove for mounting the reset spring, and the upper end of the mounting groove is provided with an opening; the anti-lock piece slides upwards, and the extrusion plate on the lock shell enters the mounting groove from the opening and compresses the reset spring.

10. A single bolt lock body with a back lock function according to claim 1 or 2 or 3, characterized in that: the rear end part of the lock rod is sleeved with a positioning spring, one end part of the positioning spring is abutted against the lock shell, and the other end part of the positioning spring is abutted against the rear end part of the lock rod.

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