CN221703446U - Door lock with anti-theft function - Google Patents

Abstract

The utility model discloses a door lock with an anti-theft function, which comprises a lock shell, a thumb wheel piece and a lock frame, wherein the lock frame is provided with a lock tongue, the lock tongue can slide along the lock frame to extend or retract into the lock shell, the thumb wheel piece comprises an inner thumb wheel and an outer thumb wheel which are mutually independent, the outer thumb wheel is provided with a bayonet, the lock shell is internally provided with a locking piece in a sliding manner, the locking piece is manually operated to enable at least part of the locking piece to enter or leave the bayonet of the outer thumb wheel to lock or unlock the outer thumb wheel, the locking piece is provided with a guide part, the lock frame is provided with a matching part which is in linkage with the guide part along the sliding direction, the guide part or the matching part is provided with a guide inclined plane, under the locking state of the outer thumb wheel, the inner thumb wheel is rotated to drive the lock frame to slide so as to enable the matching part and the guide part which is limited in the bayonet to leave the bayonet.

Description

Door lock with anti-theft function

Technical Field

The utility model relates to the technical field of door locks, in particular to a door lock with an anti-theft function.

Background Art

A door lock is a piece of hardware installed on a door to maintain the security of a room or personal storage space. Its basic structure includes a lock tongue that can be extended and retracted under the action of external force, which cooperates with a buckle box installed on the door frame to prevent the door from being opened by accident such as being blown by the wind.

Chinese patent No. CN202320359671.1 discloses a lock body, including a lock shell, a lock tongue arranged on one side of the lock shell, the lock tongue can extend or retract into the lock shell, a rotatable dial component is also provided in the lock shell, the dial component can drive the lock tongue to retract into the lock shell through a transmission lock frame, the dial component includes an inner dial body and an outer dial body, the outer dial body also has a bayonet, a slidable card core and a locking member linked to the locking member are provided in the lock shell, the end of the locking member is exposed on the inner side of the lock shell, the card core can be slidably inserted into or withdrawn from the bayonet on the outer dial body to lock or unlock the outer dial body, and when the outer dial body is locked, the inner dial body can also rotate relative to the outer dial body to unlock the lock.

The problem existing in the above patent is that the outer door handle can be locked separately through the card core, while the inner door handle is not restricted and can be freely rotated to unlock. When the user opens and closes the door, the outer door handle is usually unlocked, but the card core needs to be pushed again, which is not convenient enough.

Summary of the invention

The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and to provide a door lock with an anti-theft function.

To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a door lock with anti-theft function, comprising a lock shell, a thumbwheel member rotatably arranged in the lock shell, and a lock frame that slides in conjunction with the thumbwheel member, wherein a lock tongue is arranged on the lock frame and the lock tongue can slide out or retract into the lock shell with the lock frame, the thumbwheel member comprises an inner thumbwheel and an outer thumbwheel that are independent of each other, a bayonet is arranged on the outer thumbwheel, a locking member is slidably arranged in the lock shell, and the locking member is manually operated to at least partially enter or disengage from the bayonet of the outer thumbwheel to lock or unlock the outer thumbwheel, the locking member has a guide portion, the lock frame is provided with a matching portion that is linked to the guide portion along a sliding direction, a guide structure is provided between the guide portion and the matching portion, and the guide structure includes a guiding inclined surface arranged on the guide portion or the matching portion, and when the outer thumbwheel is locked, the inner thumbwheel is rotated to drive the lock frame to slide so that relative movement is generated between the matching portion and the guide portion, and under the guidance of the guiding inclined surface, the part of the locking member limited at the bayonet is prompted to disengage from the bayonet.

As a preferred technical solution of the utility model, the guide parts are provided with two and are symmetrically arranged on both sides of the locking member, the matching parts are provided with two and are symmetrically arranged on both sides of the lock frame, and the side of the guide part facing the matching part is a guiding inclined surface.

As a preferred technical solution of the utility model, the locking piece has a card core part that cooperates with the bayonet for locking, a card seat is arranged in the lock shell, the card seat has a groove for the locking piece to slide, and a gear structure is arranged between the locking piece and the groove, and the gear structure has a first gear position that allows the card core part to enter the bayonet when the outer dial wheel is locked, and a second gear position that allows the card core part to be separated from the bayonet when the outer dial wheel is unlocked.

As a preferred technical solution of the utility model, the gear structure includes a steel ball, a first stop groove, and a second stop groove. The first stop groove and the second stop groove are arranged along the movement direction of the locking member. The first stop groove and the second stop groove are opened on the locking member or the socket groove. The locking member or the socket groove is provided with a spring groove corresponding to the first stop groove and the second stop groove. A compression spring is provided in the spring groove and the outer end of the compression spring is connected to a steel ball. When the outer dial wheel is locked, the steel ball is located in the second stop groove. When the outer dial wheel is unlocked, the steel ball disengages from the second stop groove and is stuck in the first stop groove.

As a preferred technical solution of the utility model, the outer dial is sleeved with a torsion spring fixed in the lock housing, and when the outer dial is not subjected to force, the bayonet of the outer dial is always aligned with the locking member under the action of the torsion spring.

As a preferred technical solution of the utility model, a first mounting column is provided on the lock frame, a second mounting column is provided in the lock housing, a tension spring is provided between the first mounting column and the second mounting column, and the tension spring is in a stretched state when the lock tongue extends out of the lock housing.

As a preferred technical solution of the utility model, a long groove is provided on the lock frame along its sliding direction, the inner and outer dial wheels have paddles extending into the long groove, and the rear end of the long groove has a contact surface that can cooperate with the paddle.

Compared with the prior art, the beneficial effects of the utility model are as follows: the door lock has the function of locking the outside handle, and when the locking operation is still needed after the door is closed, the locking piece is directly operated in the room to drive the card core part to slide synchronously, and the card core part slides in the card slot of the outer dial wheel to lock the outer dial wheel. At this time, the outside door handle installed on the outer dial wheel cannot be rotated to open the door lock, while the inner dial wheel body is not restricted and can be freely rotated to open the door lock. By rotating the handle of the inner dial wheel, the lock frame slides and drives the lock tongue to extend back into the lock shell, and the matching part of the lock frame and the guide part of the locking piece move relative to each other, and under the guidance of the guiding inclined surface, the card core is disengaged from the card slot to unlock the outer dial wheel. At this time, both the outer dial wheel and the inner dial wheel are not restricted and can be freely rotated to open the door lock, so that the outer dial wheel can be locked separately, and the locking of the outer dial wheel can be released by rotating the inner dial wheel, and the operation is convenient.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of the structure of the utility model;

FIG2 is a schematic diagram of the structure of the utility model without part of the housing;

3 is a schematic diagram of the structure of the lock frame and the dial wheel member in the utility model;

FIG4 is a schematic diagram of the structure of the cooperation between the card holder, the locking member and the thumbwheel member of the utility model;

FIG. 5 is a cross-sectional view of the card holder in the present utility model.

Figure numerals: 1, lock housing; 2, dial wheel member; 3, lock frame; 4, lock tongue; 5, bayonet; 6, locking member; 7, guide portion; 8, matching portion; 9, guiding slope; 10, card core portion; 11, card seat; 12, groove; 13, steel ball; 14, first stop groove; 15, second stop groove; 16, spring groove; 17, compression spring; 18, torsion spring; 19, first mounting post; 20, second mounting post; 21, tension spring; 22, long groove; 23, pick; 24, contact surface; 25, inner dial wheel; 26, outer dial wheel.

DETAILED DESCRIPTION

In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

The specific embodiments of the present utility model are described below in conjunction with the accompanying drawings.

As shown in Figures 1 to 5, a door lock with an anti-theft function comprises a lock housing 1, a dial wheel member 2 rotatably arranged in the lock housing 1, and a lock frame 3 that slides in conjunction with the dial wheel member 2. A lock tongue 4 is arranged on the lock frame 3 and the lock tongue 4 can slide out or retract into the lock housing 1 along with the lock frame 3. The dial wheel member 2 comprises an inner dial wheel 25 and an outer dial wheel 26 that are independent of each other. A bayonet 5 is arranged on the outer dial wheel 26. A locking member 6 is slidably arranged in the lock housing 1. The locking member 6 is manually operated to at least partially enter or disengage from the bayonet 5 of the outer dial wheel 26 to lock or unlock the outer dial wheel 26. The locking member 6 has There is a guide portion 7, which is fixed or integrally formed on the locking member 6. The lock frame 3 is provided with a matching portion 8 linked with the guide portion 7 along the sliding direction. The matching portion 8 is fixed or integrally formed on the lock frame 3. A guide structure is provided between the guide portion 7 and the matching portion 8. The guide structure includes a guiding inclined surface 9 provided on the guide portion 7 or the matching portion 8. When the outer dial wheel 26 is locked, the inner dial wheel 25 is rotated to drive the lock frame 3 to slide so that relative movement is generated between the matching portion 8 and the guide portion 7, and under the guidance of the guiding inclined surface 9, the part of the locking member 6 limited at the bayonet 5 is forced to disengage from the bayonet 5.

The door lock has an outside handle locking function. When the door needs to be locked after it is closed, the locking member 6 is directly operated in the room to drive the card core part 10 to slide synchronously. The card core part 10 slides into the card slot 5 of the outer dial wheel 26 to lock the outer dial wheel 26. At this time, the outside door handle installed on the outer dial wheel 26 cannot be rotated to open the door lock, while the inner dial wheel 25 can be freely rotated to open the door lock without restriction. The handle of the inner dial wheel 25 is rotated to make the lock frame 3 slide and drive the lock tongue 4 to extend back into the lock shell 1. The matching part 8 of the lock frame 3 and the guide part 7 of the locking member 6 move relative to each other, and under the guidance of the guiding inclined surface 9, the card core is separated from the card slot 5 to unlock the outer dial wheel 26. At this time, both the outer dial wheel 26 and the inner dial wheel 25 are unrestricted and can be freely rotated to open the door lock. The outer dial wheel 26 can be locked separately, and the lock of the outer dial wheel 26 can be released by rotating the inner dial wheel 25, which is convenient to operate.

Two guide parts 7 are provided and are symmetrically arranged on both sides of the locking member 6, and two matching parts 8 are provided and are symmetrically arranged on both sides of the lock frame 3. The side of the guide part 7 facing the matching part 8 is a guiding slope 9, or the matching part 8 can be provided with a guiding slope 9, or both the guide part 7 and the matching part 8 are provided with guiding slopes 9. Specifically, the first case is listed: when the lock tongue 4 extends out of the lock shell 1, the locking member 6 is manually controlled to make the card core part 10 enter the bayonet 5 of the outer dial wheel 26, and the matching block of the lock frame 3 is located on the left side of the locking block. The handle of the inner dial wheel 25 is turned to move the lock frame 3 to the right, and the matching block contacts the guiding slope 9 of the locking block to produce relative movement, so that the card core part 10 of the locking member 6 moves upward to disengage from the bayonet 5 of the outer dial wheel 26, thereby releasing the lock on the outer dial wheel 26.

The locking member 6 has a card core portion 10 that is locked with the bayonet 5. A card seat 11 is fixed or integrally arranged in the lock housing 1. The card seat 11 has a groove 12 for the locking member 6 to slide. A gear structure is arranged between the locking member 6 and the groove 12. The gear structure has a first gear position that allows the card core portion 10 to enter the bayonet 5 when the outer dial wheel 26 is locked, and a second gear position that allows the card core portion 10 to disengage from the bayonet 5 when the outer dial wheel 26 is unlocked.

The gear structure includes a steel ball 13, a first stop groove 14, and a second stop groove 15. The first stop groove 14 and the second stop groove 15 are arranged along the movement direction of the locking member 6. The first stop groove 14 and the second stop groove 15 are opened on the locking member 6 or the groove 12 of the card seat 11. The locking member 6 or the groove 12 of the card seat 11 is provided with a spring groove 16 corresponding to the first stop groove 14 and the second stop groove 15. A compression spring 17 is provided in the spring groove 16 and the outer end of the compression spring 17 is connected to the steel ball 13. When the outer dial wheel 26 is locked, the steel ball 13 is located in the second stop groove 15. When the outer dial wheel 26 is unlocked, the steel ball 13 is disengaged from the second stop groove 15 and is inserted into the first stop groove 14. The steel ball 13 is inserted into the first stop groove 14 and the second stop groove 15 to realize the gear reminder.

The outer dial wheel 26 is sleeved with a torsion spring 18 fixed in the lock housing 1 . When the outer dial wheel 26 is not subjected to force, the bayonet 5 of the outer dial wheel 26 is always aligned with the locking member 6 under the action of the torsion spring 18 .

A first mounting column 19 is provided on the lock frame 3, a second mounting column 20 is provided in the lock housing 1, a tension spring 21 is provided between the first mounting column 19 and the second mounting column 20, and the tension spring 21 is in a stretched state when the lock tongue 4 extends out of the lock housing 1.

The lock frame 3 is provided with a long slot 22 along its sliding direction. The inner dial wheel 25 and the outer dial wheel 26 have a paddle 23 extending into the long slot 22 . The rear end of the long slot 22 has a contact surface 24 that can cooperate with the paddle 23 .

The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which shall fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims (7)

1. The utility model provides a lock with theftproof function, includes lock housing (1), rotates thumb wheel spare (2) that set up in lock housing (1) and realizes lock frame (3) that slide with thumb wheel spare (2) linkage, be provided with spring bolt (4) on lock frame (3) and spring bolt (4) can slide along with lock frame (3) and stretch out or retract in lock housing (1), thumb wheel spare (2) are including mutually independent interior thumb wheel (25) and outer thumb wheel (26), be provided with bayonet socket (5) on outer thumb wheel (26), the slip of lock housing (1) is provided with locking piece (6), and manual operation locking piece (6) make its at least part get into or break away from bayonet socket (5) of outer thumb wheel (26) and lock or unblock outer thumb wheel (26), its characterized in that: the locking piece (6) is provided with a guide part (7), the lock frame (3) is provided with a matching part (8) linked with the guide part (7) along the sliding direction, a guide structure is arranged between the guide part (7) and the matching part (8), the guide structure comprises a guide inclined surface (9) arranged on the guide part (7) or the matching part (8), under the locking state of the outer poking wheel (26), the inner poking wheel (25) is rotated to drive the lock frame (3) to slide so as to generate relative motion between the matching part (8) and the guide part (7), and the locking piece (6) is enabled to be limited on the part of the bayonet (5) to be separated from the bayonet (5) under the guidance of the guide inclined surface (9).

2. The door lock with antitheft function according to claim 1, characterized in that: the guide parts (7) are arranged at two sides of the locking piece (6) symmetrically, the matching parts (8) are arranged at two sides of the lock frame (3) symmetrically, and one side surface of each guide part (7) facing the matching part (8) is a guide inclined surface (9).

3. The door lock with antitheft function according to claim 1, characterized in that: the locking piece (6) is provided with a clamping core part (10) in locking fit with the bayonet (5), a clamping seat (11) is arranged in the lock shell (1), the clamping seat (11) is provided with a groove (12) for the locking piece (6) to slide, a gear structure is arranged between the locking piece (6) and the groove (12), and the gear structure is provided with a first gear for enabling the clamping core part (10) to enter the bayonet (5) under the locking state of the outer poking wheel (26) and a second gear for enabling the clamping core part (10) to be separated from the bayonet (5) under the unlocking state of the outer poking wheel (26).

4. A door lock with anti-theft function according to claim 3, characterized in that: the gear structure comprises steel balls (13), a first stop groove (14) and a second stop groove (15), wherein the first stop groove (14) and the second stop groove (15) are arranged along the movement direction of a locking piece (6), the first stop groove (14) and the second stop groove (15) are formed in a groove (12) of the locking piece (6) or a clamping seat (11), spring grooves (16) corresponding to the first stop groove (14) and the second stop groove (15) are formed in the groove (12) of the locking piece (6) or the clamping seat (11), a compression spring (17) is arranged in the spring groove (16), the outer end of the compression spring (17) is connected with the steel balls (13), the steel balls (13) are located in the second stop groove (15) under the locking state of an outer poking wheel (26), and the steel balls (13) are separated from the second stop groove (15) and clamped into the first stop groove (14) under the unlocking state of the outer poking wheel (26).

5. The door lock with antitheft function according to claim 1, characterized in that: the outer poking wheel (26) is sleeved with a torsion spring (18) fixed in the lock shell (1), and when the outer poking wheel (26) is not stressed, the bayonet (5) of the outer poking wheel (26) is always aligned with the locking piece (6) under the action of the torsion spring (18).

6. The door lock with antitheft function according to claim 1, characterized in that: be provided with first erection column (19) on lock frame (3), be provided with second erection column (20) in lock shell (1), be provided with extension spring (21) between first erection column (19) and second erection column (20), spring bolt (4) stretch out when lock shell (1) extension spring (21) are in tensile state.

7. The door lock with antitheft function according to claim 1, characterized in that: the lock frame (3) is provided with a long groove (22) along the sliding direction, the inner poking wheel (25) and the outer poking wheel (26) extend into the long groove (22) to form a poking piece (23), and the rear end of the long groove (22) is provided with a contact surface (24) which can be matched with the poking piece (23).