Door lock structure
By integrating the torsion spring and lock drive rod into a single structure, combined with a concealed lock tongue push rod, the problems of easy damage to the lock cylinder and easy breakage of the key in existing door locks are solved, thus achieving convenient maintenance and improved security of the door lock.
Patent Information
- Application Number
- CN202420680066.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-03
- Publication Date
- 2025-01-14
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing door lock cylinders are prone to damage, keys easily break off inside the lock cylinder, and replacement is inconvenient.
It adopts an integrated structure of torsion spring and lock drive rod. The lock drive rod and lock linkage are driven by rotating the bolt sleeve. Combined with the concealed lock tongue push rod, the door can be opened and closed. The outer cover plate can be removed and the return spring can be replaced for convenient maintenance.
It simplifies the operation of door locks, prevents keys from breaking off inside the lock cylinder, and improves the security and ease of replacement of door locks.
Smart Images
Figure CN222350472U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of door locks, and in particular to a door lock structure. Background Art
[0002] A door lock is a device used to lock a door to prevent others from opening it. There are many types of door locks, and the requirements for door locks are different in different occasions. High-end door locks often require the lock body to be completely embedded in the door body, so that the door lock installation area of the door body is overall flat without protrusions, and the outer side of the lock body is flush with the door plane. Such a door is neat and generous.
[0003] Many existing door locks are double-sided, that is, they can be seen from both inside and outside. The door is opened by inserting a key through a keyhole. When the door lock is in use, if the lock core is broken, it is inconvenient to replace it, and the key is easily broken in the keyhole.
[0004] Therefore, it is necessary to provide a new door lock structure to solve the above-mentioned technical problems. Utility Model Content
[0005] In order to solve the above technical problems, the utility model provides a door lock structure.
[0006] The door lock structure provided by the utility model comprises: a door lock base, a bolt sleeve and an outer cover plate connected to the door lock base, the door lock base is fixed with a first baffle plate, a second baffle plate and a detachably connected lock tongue guide plate, the bottom end of the bolt sleeve is mounted on the door lock base through a rotating shaft, a torsion spring is sleeved on the bolt sleeve, the two ends of the torsion spring are respectively fixed on the first baffle plate and a lock driving rod, the lock driving rod is fixed on the bolt sleeve, the two ends of the lock driving rod are movably connected to a lock connecting rod through a connecting rod, and the other ends of the two lock connecting rods away from the lock driving rod are movably connected to a lock tongue push rod through a connecting rod.
[0007] Preferably, the bolt sleeve is hollow inside, and the bolt sleeve is connected to the outer cover plate via a fixing rod.
[0008] Preferably, the first baffle plate, the second baffle plate and the detachably connected lock tongue guide are all a set.
[0009] Preferably, the lock tongue guide piece is in contact with the edge of the lock tongue push rod, and the second baffle is located within the movable range of the lock drive rod.
[0010] Preferably, a gusset plate is fixed on the upper surface of the outer cover plate, a handle is fixed above the gusset plate, and the handle is connected to the fixing rod.
[0011] Preferably, the buckle plate is fixedly connected to the outer cover plate via a fixing piece.
[0012] Compared with the related art, the door lock structure provided by the utility model has the following beneficial effects:
[0013] The torsion spring and the lock driving rod are integrated into one structure, which has a simple structure. When in use, only the bolt sleeve needs to be rotated, and the lock driving rod fixed on the bolt sleeve will rotate, and drive the lock connecting rods and the lock driving rod on both sides of the lock driving rod to move simultaneously, so that the door is opened. When the door is opened, since the torsion spring is arranged on the bolt sleeve, the two ends of the torsion spring are respectively fixed on the first baffle plate and the lock driving rod, so that the bolt sleeve has a reset function, and the second baffle plate arranged on the door lock base is within the movable range of the lock driving rod, and the lock driving rod is limited. The range of rotation of the required bolt sleeve can be adjusted according to the position of the second baffle plate. When the door lock is damaged, only the outer cover plate needs to be opened and the reset spring in the lock can be replaced. The operation is simple and the replacement is convenient. The device abandons the traditional method of opening the lock hole with a key, and achieves the locking effect by arranging two opposite lock tongue push rods inside the outer cover plate, thereby preventing the key from breaking in the lock hole. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 The overall structural diagram of the door lock structure provided by the utility model;
[0015] Figure 2 It is a schematic diagram of the structure inside the door lock;
[0016] Figure 3 A schematic diagram of the bottom structure of the door lock structure provided by the utility model;
[0017] Figure 4 A schematic diagram of a side cross-sectional structure of a door lock structure provided by the utility model;
[0018] Figure 5 It is a structural schematic diagram of the door lock base;
[0019] Figure 6 It is a structural schematic diagram of a bolt sleeve;
[0020] Figure 7 is a structural schematic diagram of the rotating shaft;
[0021] Figure 8 It is a schematic diagram of the structure of the lock connecting rod;
[0022] Fig. 9 It is a schematic diagram of the structure of the lock drive rod.
[0023] Numbers in the figure: 1, door lock base; 11, first baffle; 12, second baffle; 13, lock tongue guide; 2, bolt sleeve; 21, fixing rod; 22, torsion spring; 3, lock drive rod; 4, rotating shaft; 5, lock connecting rod; 51, connecting rod; 6, lock tongue push rod; 7, outer cover plate; 8, buckle plate; 81, handle; 82, fixing piece; DETAILED DESCRIPTION
[0024] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.
[0025] Please refer to Figures 1 to 9 ,in, Figure 1 The overall structural diagram of the door lock structure provided by the utility model; Figure 2 It is a schematic diagram of the structure inside the door lock; Figure 3 A schematic diagram of the bottom structure of the door lock structure provided by the utility model; Figure 4 A schematic diagram of a side cross-sectional structure of a door lock structure provided by the utility model; Figure 5 It is a structural schematic diagram of the door lock base; Figure 6 It is a structural schematic diagram of a bolt sleeve;
[0026] Figure 7 is a structural schematic diagram of the rotating shaft; Figure 8 It is a schematic diagram of the structure of the lock connecting rod; Fig. 9 It is a schematic diagram of the structure of the lock drive rod.
[0027] In the specific implementation process, Figures 1 to 9 As shown, it includes a door lock base 1, a bolt sleeve 2 and an outer cover plate 7 connected to the door lock base 1, a first baffle 11 and a second baffle 12 and a detachably connected lock tongue guide 13 are fixed on the door lock base 1, the bottom end of the bolt sleeve 2 is installed on the door lock base 1 through a rotating shaft 4, preferably, a groove can be provided at the bottom of the rotating shaft for connecting with other components, a torsion spring 22 is sleeved on the bolt sleeve 2, the two ends of the torsion spring 22 are respectively fixed on the first baffle 11 and the lock drive rod 3, the lock drive rod 3 is fixed on the bolt sleeve 2, both ends of the lock drive rod 3 are movably connected to the lock connecting rod 5 through a connecting rod 51, and the other ends of the two lock connecting rods 5 away from the lock drive rod 3 are movably connected to the lock tongue push rod 6 through the connecting rod 51, and the movable connection can be a rotating connection or a sliding connection.
[0028] When the door is opened, a linkage structure is provided in the lock, and a reciprocating telescopic method is adopted, so that the door lock can be made safer.
[0029] refer to Figures 1 to 4As shown, the bolt sleeve 2 is hollow inside, and is connected to the outer cover plate 7 through a fixing rod 21. The first baffle 11, the second baffle 12 and the detachably connected lock tongue guide 13 are all a group. A buckle plate 8 is fixed to the upper surface of the outer cover plate 7, and a handle 81 is fixed above the buckle plate 8. The handle 81 is connected to the fixing rod 21. The buckle plate 8 is fixedly connected to the outer cover plate 7 through a fixing member 82. The lock tongue guide 13 fits against the edge of the lock tongue push rod 6. The second baffle 12 is located within the movable range of the lock drive rod 3. Preferably, the fixing rod 21 is in the shape of a rhombus or a rectangle. Preferably, the connecting rod 51 allows the lock link 5 and the lock tongue push rod 6 to be in a rotational connection.
[0030] refer to Figures 5 to 9 Shown is a partial parts diagram of the device.
[0031] The working principle provided by the utility model is as follows: first, the handle 81 is pressed down, and the handle 81 drives the fixing rod 21 to rotate. The fixing rod 21 is fixed in the rotating shaft 4, and the rotating shaft 4 drives the bolt sleeve 2 to rotate. A lock driving rod 3 is fixed on the bolt sleeve 2. Under the action of external force, the lock driving rod 3 drives the lock connecting rod 5 and the lock tongue push rod 6 to move closer to the middle, and the door is opened. At this time, the handle 81 is released, and a torsion spring 22 is sleeved on the bolt sleeve 2. The two ends of the torsion spring 22 are respectively fixed on the first baffle 11 and the lock driving rod 3. Under the action of elasticity, the lock driving rod 3 is reset, and the lock driving rod 3 drives the lock tongue push rod 6 to move to both sides, the handle 81 is reset, and the door lock is closed.
[0032] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A door lock structure, characterized in that: The invention comprises a door lock base (1), a bolt sleeve (2) and an outer cover plate (7) connected to the door lock base (1); a first baffle plate (11) and a second baffle plate (12) and a detachably connected lock tongue guide plate (13) are fixed on the door lock base (1); the bottom end of the bolt sleeve (2) is mounted on the door lock base (1) through a rotating shaft (4); a torsion spring (22) is sleeved on the bolt sleeve (2); the two ends of the torsion spring (22) are respectively fixed on the first baffle plate (11) and a lock driving rod (3); the lock driving rod (3) is fixed on the bolt sleeve (2); the two ends of the lock driving rod (3) are movably connected to a lock connecting rod (5) through a connecting rod (51); the other ends of the two lock connecting rods (5) away from the lock driving rod (3) are movably connected to a lock tongue push rod (6) through the connecting rod (51).
2. The door lock structure according to claim 1, characterized in that: The bolt sleeve (2) is hollow inside, and the bolt sleeve (2) is connected to the outer cover plate (7) via a fixing rod (21).
3. The door lock structure according to claim 1, characterized in that: The first baffle plate (11), the second baffle plate (12) and the detachably connected lock tongue guide plate (13) all form a set.
4. The door lock structure according to claim 1, characterized in that: The lock tongue guide piece (13) is in contact with the edge of the lock tongue push rod (6), and the second baffle plate (12) is located within the movable range of the lock driving rod (3).
5. The door lock structure according to claim 1, characterized in that: A buckle plate (8) is fixed on the upper surface of the outer cover plate (7), a handle (81) is fixed above the buckle plate (8), and the handle (81) is connected to the fixing rod (21).
6. The door lock structure according to claim 5, characterized in that: The buckle plate (8) and the outer cover plate (7) are fixedly connected via a fixing member (82).