A door lock

Abstract

The utility model belongs to the technical field of lockset, specifically disclose a door lock, including the shell, lock cylinder shell, lock cylinder and lock tongue, lock cylinder shell installs on the shell, lock cylinder rotatably sets up in the lock cylinder shell, lock tongue is slidably arranged in the shell, one side of lock tongue is equipped with first gap, lock cylinder is connected with the first gap transmission of lock tongue through the dolly, the door lock still includes the movable element, the movable element is placed in the first gap, the lateral wall of movable element is equipped with the top block, and is equipped with the elastic element between movable element and lock tongue, the lateral wall of shell is set up the opening, the side of opening parallel to the lock tongue sliding direction projects and is equipped with the detent block, the both sides of detent block are equipped with first clamping seat and second clamping seat, the top block can be in the opening activity, and can be placed in first clamping seat or second clamping seat. The detent block holds up the top block, prevents lock tongue and retreats in the shell under the action of external force.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, and in particular to a door lock. Background Technology

[0002] A door lock is a type of lock that allows a door to be opened and locked from its frame.

[0003] The invention patent application with publication number CN 111663848 A specifically discloses a square latch anti-pry mechanism and a door lock. According to its disclosure, it uses a key to drive an unlocking lever, a rotating lever connected to the unlocking lever, and an "L"-shaped lever at one end of the rotating lever interacting with a groove on the square latch. This allows the square latch to extend outside or retract inside the housing. The lever abuts against the inner wall of the groove, forming a 90° angle with the groove, effectively locking the square latch and preventing prying. However, in practical applications, this method of locking the square latch by abutting against the inner wall of the groove and forming a 90° angle is unreliable. If an external force causes the lever to loosen between the lever and the inner wall of the groove, the square latch can easily retract into the housing, allowing the door lock to be pried open. Utility Model Content

[0004] In order to overcome the defects of the existing technology, this utility model provides a door lock that solves the problem of the door lock being pried open because the square tongue retracts into the housing.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a door lock, including a housing, a lock cylinder housing, a lock cylinder and a lock tongue, the lock cylinder housing is installed on the housing, the lock cylinder is rotatably disposed in the lock cylinder housing, the lock tongue is slidably disposed in the housing, one side of the lock tongue is provided with a first notch, the lock cylinder is connected to the first notch of the lock tongue through a toggle member, the door lock also includes a movable member, the movable member is placed in the first notch, the side wall of the movable member is provided with a top block, and an elastic member is provided between the movable member and the lock tongue;

[0006] An opening is made on the side wall of the housing, and a stop block protrudes from one side of the opening parallel to the sliding direction of the latch. A first locking position and a second locking position are respectively provided on both sides of the stop block. The top block can move within the opening and can be placed in the first locking position or the second locking position.

[0007] As a further embodiment, the actuating element is rotatably disposed within the housing, with a first gear portion at one end of the actuating element and a second gear portion on the side wall of the lock cylinder, the first gear portion and the second gear portion being meshed.

[0008] As a further embodiment, the end of the actuating member away from the first gear is provided with a cylinder, the cylinder is placed in the first notch, and the side of the cylinder abuts against the movable member.

[0009] As a further embodiment, the actuating member has a rotating shaft at one end near the lock cylinder, and the housing has a positioning hole that matches the rotating shaft, so that the actuating member can rotate around the rotating shaft.

[0010] As a further embodiment, the movable part includes an integral abutting part and a covering part, the abutting part and the covering part being L-shaped, the abutting part being arc-shaped and located between the actuating part and the elastic part, the locking tongue having a relief groove communicating with the first notch, the covering part being plate-shaped and disposed in the relief groove to cover the elastic part, and the top block being disposed on the covering part.

[0011] As a further solution, a blind hole is provided on the inner wall of the first notch, and one end of the elastic element is placed in the blind hole.

[0012] As a further embodiment, a guide protrusion is provided on the side of the latch, and a guide groove that matches the guide protrusion is provided on the side wall of the housing.

[0013] As a further solution, the first notch, the stop block, and the top block all have rounded corners on both sides.

[0014] As a further embodiment, the lock cylinder shell penetrates the housing, and a second notch is provided in the middle of the lock cylinder shell. There are two lock cylinders, and both lock cylinders are installed inside the lock cylinder shell. The ends of the two lock cylinders that are close to each other are located at the second notch, and the sidewalls of the two lock cylinders located at the ends of the second notch are provided with the second gear parts. The two second gear parts are engaged with the first gear part at the second notch.

[0015] As a further embodiment, the door lock also includes a decorative shell, which is fitted onto the lock cylinder shell, and the decorative shell is provided with a threaded post, one end of which passes through the side wall of the shell and is close to the second notch.

[0016] The beneficial effects of this invention are as follows: When the lock cylinder is rotated, the lock cylinder drives the actuating component. One end of the actuating component moves within the first notch. As the actuating component pushes the bolt to slide, simultaneously, one end of the actuating component also pushes the movable component to move in a direction perpendicular to the sliding direction of the bolt within the first notch, and the top block moves synchronously. Under the action of forces in both directions, the top block moves in a curved path within the opening, transitioning from the first locking position to the second locking position. One end of the bolt slides out of the housing, and the door is locked. At this time, the stop block presses against the top block, preventing the bolt from retracting into the housing under external force, thus preventing the door from being opened. Attached Figure Description

[0017] Figure 1 This is a perspective view (a) of an embodiment of the present utility model;

[0018] Figure 2 This is a perspective view (II) of an embodiment of the present utility model;

[0019] Figure 3 This is a perspective view (iii) of an embodiment of the present utility model;

[0020] Figure 4 for Figure 3 Enlarged view of point A in the image;

[0021] Figure 5 This is a perspective view (fourth) of an embodiment of the present utility model;

[0022] Figure 6 for Figure 5 The 3D model of the moving parts is missing.

[0023] Figure 7 This is a schematic diagram of the structure of the movable component in an embodiment of this utility model;

[0024] Figure 8 This is a schematic diagram of the structure of the toggle member in an embodiment of this utility model.

[0025] In the figure, 1-shell, 11-opening, 12-stop block, 13-first locking position, 14-second locking position, 15-positioning hole, 16-guide groove, 2-lock cylinder shell, 21-second notch, 3-lock cylinder, 31-second gear part, 4-lock tongue, 41-first notch, 42-avoiding groove, 43-blind hole, 44-guide protrusion, 5-moving part, 51-top block, 52-abutting part, 53-covering part, 6-elastic part, 7-toggle part, 71-first gear part, 72-cylinder, 73-rotating shaft part, 8-decorative shell, 81-screw post. Detailed Implementation

[0026] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0027] As attached Figure 2-4 As shown, this utility model provides a door lock, including a housing 1, a lock cylinder housing 2, a lock cylinder 3, and a bolt 4. The housing 1 can be installed inside the door. The lock cylinder housing 2 is mounted on the housing 1, and the lock cylinder 3 is rotatably disposed within the lock cylinder housing 2. The bolt 4 is slidably disposed within the housing 1. Specifically, as shown in the attached diagram... Figure 1As shown, a guide protrusion 44 is provided on the side of the latch 4 by welding or integral molding, and a guide groove 16 is provided on the side wall of the housing 1 to cooperate with the guide protrusion 44, so that the latch 4 maintains a straight direction during sliding. When locking the door, the latch 4 can pass through the opening on the housing 1 and be inserted into the lock box of the door frame.

[0028] A key can be inserted into lock cylinder 3 to drive it to rotate, as shown in the attached diagram. Figure 6 As shown, the latch 4 has a first notch 41 on one side. The lock cylinder 3 is connected to the first notch 41 of the latch 4 through the actuating member 7. The actuating member 7 acts on the first notch 41, thereby driving the latch 4 to slide.

[0029] As attached Figure 5-7 As shown, the door lock also includes a movable component 5, which is placed within the first notch 41. The side wall of the movable component 5 can be welded or integrally formed with a top block 51, and an elastic component 6 is provided between the movable component 5 and the bolt 4. The elastic component 6 can be a spring, which serves two purposes: firstly, to reset the movable component 5, and secondly, to keep the movable component 5 against the actuating component 7, which in turn always abuts against the lock cylinder 3, maintaining the transmission force and preventing the lock cylinder 3 from becoming loose due to lack of force during rotation. A blind hole 43 is provided on the inner wall of the first notch 41, and one end of the elastic component 6 is placed within the blind hole 43, thereby fixing the elastic component 6 and preventing its displacement, ensuring stable force when the movable component 5 moves within the first notch 41.

[0030] As attached Figure 2 As shown, an opening 11 is made on the side wall of the housing 1. A stop block 12 protrudes from one side of the opening 11 parallel to the sliding direction of the latch 4. A first locking position 13 and a second locking position 14 are respectively provided on both sides of the stop block 12. The top block 51 can move in the opening 11 and can be placed in the first locking position 13 or the second locking position 14.

[0031] Specifically, when the lock cylinder 3 is rotated, the lock cylinder 3 drives the actuating member 7. One end of the actuating member 7 moves within the first notch 41. As the actuating member 7 pushes the bolt 4 to slide, simultaneously, one end of the actuating member 7 also pushes the movable member 5 to move in a direction perpendicular to the sliding direction of the bolt 4 within the first notch 41, and the top block 51 moves synchronously. Under the action of forces in both directions, the top block 51 moves in a curved path within the opening 11, transitioning from the first locking position 13 to the second locking position 14. One end of the bolt 4 slides out of the housing 1, and the door is locked. At this time, the stop block 12 presses against the top block 51, preventing the bolt 4 from retracting into the housing 1 under external force, thus preventing the door from being opened. When opening the door, simply rotating the lock cylinder 3 will cause the bolt 4 to retract into the housing 1, and the top block 51 will transition from the second locking position 14 to the first locking position 13. The stop block 12 will press against the top block 51 again.

[0032] It should be noted that since the bolt 4 can only slide back and forth in a straight line in one direction, it needs to be turned in conjunction with the lock cylinder 3 to open or lock the door.

[0033] The actuating element 7 is rotatably disposed within the housing 1. The specific implementation is as follows: (see attached diagram) Figure 3-4 As shown, the actuating member 7 has a rotating shaft 73 at one end near the lock cylinder 3, and a positioning hole 15 is provided on the housing 1 to match the rotating shaft 73, so that the actuating member 7 can rotate around the rotating shaft 73. One end of the actuating member 7 has a first gear 71, and the side wall of the lock cylinder 3 has a second gear 31, which mesh with each other. When the lock cylinder 3 is driven to rotate, the actuating member 7 is further driven to rotate around the rotating shaft 73, while the end of the actuating member 7 away from the rotating shaft 73 swings and interacts with the first notch 41 of the latch 4 and the moving member 5.

[0034] As a further improvement, see attached Figure 5-6 As shown in Figure 8, the end of the actuating member 7 away from the first gear part 71 is provided with a cylinder 72. The cylinder 72 is placed in the first notch 41, and the side of the cylinder 72 abuts against the movable member 5. Since the side of the cylinder 72 is an arc surface, the frictional resistance can be reduced when the cylinder 72 interacts with the first notch 41 of the latch 4 and the movable member 5, thereby reducing the force required to rotate the lock cylinder 3, which is relatively labor-saving.

[0035] As one example, see attached Figure 5-7 As shown, the movable part 5 includes an integral abutting part 52 and a covering part 53. The abutting part 52 and the covering part 53 are in an "L" shape. The abutting part 52 is arc-shaped to reduce frictional resistance and is located between the actuating part 7 and the elastic part 6. The locking tongue 4 is provided with a relief groove 42 that communicates with the first notch 41. The covering part 53 is plate-shaped and is disposed in the relief groove 42 to cover the elastic part 6. The top block 51 is disposed on the covering part 53. When one end of the actuating member 7 pushes the movable member 5 to move in a direction perpendicular to the sliding direction of the latch 4 within the first notch 41, on the one hand, the covering part 53 can cover the elastic member 6 to prevent the elastic member 6 from popping out of the first notch 41 under force. On the other hand, based on the aforementioned function, it can play a clearance role, so that the covering part 53 has a stroke in the direction perpendicular to the sliding direction of the latch 4. Furthermore, when the covering part 53 and the clearance groove 42 are in clearance fit, the movable member 5 can move stably in the direction perpendicular to the sliding direction of the latch 4, thereby increasing the transmission efficiency between the movable member 5 and the actuating member 7.

[0036] Similarly, as attached Figure 2 , 5 As shown in Figures 7 and 8, the first notch 41, the stop block 12, and the top block 51 are all provided with rounded corners on both sides. The purpose is to reduce the resistance between the toggle 7 and the lock tongue 4, and between the stop block 12 and the top block 51, so as to make the unlocking or locking process smoother.

[0037] In practical applications, as shown in the appendix Figure 4 As shown, the lock cylinder shell 2 penetrates the shell 1, and a second notch 21 is provided in the middle of the lock cylinder shell 2. There are two lock cylinders 3, both of which are installed inside the lock cylinder shell 2. The ends of the two lock cylinders 3 that are close to each other are located at the second notch 21, and a second gear part 31 is provided on the side wall of the end of the two lock cylinders 3 located at the second notch 21. Both second gear parts 31 are engaged with the first gear part 71 at the second notch 21, so that the door can be unlocked or locked from both inside and outside.

[0038] In some application scenarios, such as the attached Figure 3-4 As shown, the door lock also includes a decorative shell 8, which is fitted onto the lock cylinder shell 2 for decorative purposes. The decorative shell 8 has screw posts 81, which connect the inner and outer decorative shells 8 to each other, thus securing the lock cylinder shell 2. One end of the screw post 81 passes through the side wall of the shell 1 and is close to the second notch 21. This restricts the radial space of the end of the lock cylinder 3 near the second notch 21, preventing the actuating element 7 from being integrated with the lock cylinder 3 into a single lever; therefore, the solution described in this application must be used.

[0039] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A door lock, characterized in that: The lock includes a housing (1), a lock cylinder housing (2), a lock cylinder (3), and a bolt (4). The lock cylinder housing (2) is mounted on the housing (1). The lock cylinder (3) is rotatably disposed inside the lock cylinder housing (2). The bolt (4) is slidably disposed inside the housing (1). One side of the bolt (4) is provided with a first notch (41). The lock cylinder (3) is connected to the first notch (41) of the bolt (4) through a toggle (7). The door lock also includes a movable part (5). The movable part (5) is placed inside the first notch (41). The side wall of the movable part (5) is provided with a top block (51). An elastic part (6) is provided between the movable part (5) and the bolt (4). An opening (11) is provided on the side wall of the housing (1). A stop block (12) protrudes from one side of the opening (11) parallel to the sliding direction of the latch (4). A first locking position (13) and a second locking position (14) are provided on both sides of the stop block (12). The top block (51) can move within the opening (11) and can be placed in the first locking position (13) or the second locking position (14).

2. A door lock according to claim 1, characterized in that: The actuating element (7) is rotatably disposed inside the housing (1). One end of the actuating element (7) is provided with a first gear part (71), and the side wall of the lock cylinder (3) is provided with a second gear part (31). The first gear part (71) and the second gear part (31) are meshed.

3. A door lock according to claim 2, characterized in that: The actuating member (7) has a cylinder (72) at one end away from the first gear (71). The cylinder (72) is placed in the first notch (41), and the side of the cylinder (72) abuts against the movable member (5).

4. A door lock according to claim 1, characterized in that: The actuating member (7) has a rotating shaft (73) at one end near the lock cylinder (3), and the housing (1) has a positioning hole (15) that matches the rotating shaft (73) so that the actuating member (7) can rotate around the rotating shaft (73).

5. A door lock according to claim 2 or 3, characterized in that: The movable part (5) includes an integral abutting part (52) and a covering part (53). The abutting part (52) and the covering part (53) are in an "L" shape. The abutting part (52) is arc-shaped and located between the actuating part (7) and the elastic part (6). The locking tongue (4) is provided with a relief groove (42) that communicates with the first notch (41). The covering part (53) is plate-shaped and is disposed in the relief groove (42) to cover the elastic part (6). The top block (51) is disposed on the covering part (53).

6. A door lock according to any one of claims 1-3, characterized in that: A blind hole (43) is provided on the inner wall of the first notch (41), and one end of the elastic element (6) is placed in the blind hole (43).

7. A door lock according to any one of claims 1-3, characterized in that: The side of the latch (4) is provided with a guide protrusion (44), and the side wall of the housing (1) is provided with a guide groove (16) that matches the guide protrusion (44).

8. A door lock according to claim 3, characterized in that: The first notch (41), the stop block (12), and the top block (51) all have rounded corners on both sides.

9. A door lock according to claim 2, characterized in that: The lock cylinder shell (2) penetrates the shell (1), and a second notch (21) is provided in the middle of the lock cylinder shell (2). There are two lock cylinders (3), and both lock cylinders (3) are installed in the lock cylinder shell (2). The two lock cylinders (3) are located at the second notch (21) at their closest ends. The two lock cylinders (3) are provided with the second gear part (31) on the side wall at the end of the second notch (21). The two second gear parts (31) are engaged with the first gear part (71) at the second notch (21).

10. A door lock according to claim 9, characterized in that: The door lock also includes a decorative shell (8), which is fitted onto the lock cylinder shell (2), and the decorative shell (8) is provided with a threaded post (81), one end of which passes through the side wall of the shell (1) and is close to the second notch (21).

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