Mechanical door lock with bearing
By using a combination of an elliptical core and a sealed bearing in the mechanical door lock, the problems of core wear and jamming are solved, achieving low resistance and smooth door lock operation.
Patent Information
- Application Number
- CN202520197185.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-08
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-02-08
AI Technical Summary
The core of existing mechanical door locks is prone to wear and jamming, which increases rotational resistance, and the square corners are prone to getting stuck and unable to reset.
The structure employs a combination of an elliptical core and a sealed bearing. The sealed bearing reduces rotational friction, and the U-shaped plate and spring work together to ensure the smooth reset of the elliptical core.
It reduces rotational resistance, prevents core wear, ensures smooth opening and closing of the door lock, and avoids jamming.
Smart Images
Figure CN223838794U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mechanical door lock technology, specifically a mechanical door lock with bearings. Background Technology
[0002] Mechanical door locks are a common type of door lock that uses mechanical devices to control the opening and closing of the door. Their main working principle relies on the insertion and rotation of a key, utilizing internal gears, springs, pins, and other components to rotate the lock cylinder, thereby unlocking or locking the door. However, existing mechanical door locks still have certain drawbacks in use, such as…
[0003] The core of most existing mechanical door locks is directly connected to the panel. After long-term use, the core is prone to wear on the holes in the panel, allowing impurities and liquids to enter, causing the core to rust and corrode, increasing the resistance when rotating. In addition, the outer wall of the core of most existing mechanical door locks is square. After the door is opened by rotating, the square corners are prone to getting stuck and cannot be reset, causing the door lock to fail to close properly. Utility Model Content
[0004] The purpose of this invention is to provide a mechanical door lock with bearings to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a mechanical door lock with bearings, comprising: an inner panel, a lock body, an outer panel, and a handle;
[0006] One side of the inner panel abuts against the lock body, and the other side of the lock body abuts against the outer panel. The inner panel, lock body, and outer panel are fixed together by bolts. A handle abuts against one side of both the inner panel and the outer panel. Panel sealing gaskets abut against each other between the inner panel and the lock body and between the lock body and the outer panel. A lock cylinder sealing ring is slidably connected to the inner wall of the outer panel. An elliptical core is rotatably connected to the inner wall of the outer panel through a through hole. The elliptical core is inserted into the handle through a slot, and a screw is threaded into the elliptical core. The screw is threaded into the handle.
[0007] A square transmission steel bar is slidably connected inside the elliptical core away from the handle. The square transmission steel bar slides through the lock body. A sealed bearing is sleeved on the outside of the elliptical core. The sealed bearing is placed on the inner wall of the through hole through which the elliptical core passes in the outer panel.
[0008] Preferably, one side of the sealed bearing abuts against an isolation pad, the isolation pad is placed on the inner wall of the through hole through which the elliptical core passes in the outer panel, and the isolation pad abuts against one side of the handle, the isolation pad being sleeved on the outside of the elliptical core.
[0009] Preferably, a cover plate is provided above and below the elliptical core, and the cover plate abuts against the inner wall of the outer panel.
[0010] Preferably, a U-shaped plate is slidably connected to one side of the upper cover plate, the U-shaped plate abutting against the elliptical core, and the U-shaped plate is slidably connected to the inner wall of the outer panel. A spring is connected above the U-shaped plate, and the other end of the spring abuts against the inner wall of the outer panel.
[0011] Compared with the prior art, the beneficial effects of this utility model are: In this mechanical door lock with bearings, the sealed bearings reduce the friction of the elliptical core during rotation of the handle and prevent the elliptical core from causing wear on the holes in the outer panel, thus reducing the resistance during rotation of the mechanical door lock. The specific details are as follows:
[0012] 1. By inserting the elliptical core into the outer panel, then fitting the sealing bearing and isolation pad onto the elliptical core, and then inserting the handle into the elliptical core and securing it with screws, the sealing bearing reduces the friction of the elliptical core's rotation when the handle is rotated, and prevents the elliptical core from causing wear on the holes in the outer panel, thereby reducing the resistance of the mechanical door lock when rotating.
[0013] 2. When the handle rotates, the elliptical core rotates, which pushes the U-shaped plate to compress the spring. When the handle is released, the spring pushes the U-shaped plate to reset, compressing the elliptical surface on the elliptical core, thus resetting the elliptical core and the handle, thereby preventing the mechanical door lock from jamming. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0015] Figure 2 This is a schematic diagram of the three-dimensional structure of the lock body of this utility model;
[0016] Figure 3 This is a schematic diagram of the three-dimensional structure of the U-shaped plate of this utility model;
[0017] Figure 4 This is a schematic diagram of the three-dimensional cross-sectional structure of the outer panel of this utility model;
[0018] Figure 5 This is a three-dimensional structural diagram of the outer panel of this utility model;
[0019] Figure 6 This is a schematic diagram of the three-dimensional structure of the elliptical core of this utility model.
[0020] In the diagram: 1. Inner panel; 2. Lock body; 3. Outer panel; 4. Handle; 5. Panel sealing gasket; 6. Lock cylinder sealing ring; 7. Oval core; 8. Square transmission steel bar; 9. Sealed bearing; 10. Isolation gasket; 11. Cover plate; 12. U-shaped plate; 13. Spring. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Please see Figures 1-6 This utility model provides a technical solution: a mechanical door lock with bearings, comprising: an inner panel 1, a lock body 2, an outer panel 3, and a handle 4; one side of the inner panel 1 abuts against the lock body 2, and the other side of the lock body 2 abuts against the outer panel 3; the inner panel 1, lock body 2, and outer panel 3 are fixed together by bolts; one side of both the inner panel 1 and the outer panel 3 abuts against the handle 4; panel sealing gaskets 5 abut between the inner panel 1 and the lock body 2, and between the lock body 2 and the outer panel 3; a lock cylinder sealing ring 6 is slidably connected to the inner wall of the outer panel 3; and an elliptical core 7 is rotatably connected to the inner wall of the outer panel 3 through a through hole. The elliptical core 7 is inserted into the handle 4 through a slot, and a screw is threaded into the handle 4. A square transmission steel bar 8 is slidably connected inside the elliptical core 7 away from the handle 4. The square transmission steel bar 8 slides through the lock body 2. A sealing bearing 9 is sleeved on the outside of the elliptical core 7. The sealing bearing 9 is placed on the inner wall of the through hole through which the elliptical core 7 passes in the outer panel 3. An isolation pad 10 is abutted on one side of the sealing bearing 9. The isolation pad 10 is placed on the inner wall of the through hole through which the elliptical core 7 passes in the outer panel 3, and the isolation pad 10 abuts on one side of the handle 4. The isolation pad 10 is sleeved on the outside of the elliptical core 7.
[0023] In practice, the elliptical core 7 is inserted into the through hole in the outer panel 3. Then, the sealing bearing 9 is fitted onto the elliptical core 7 from the side where the handle 4 is located. Next, the isolation pad 10 is fitted onto the elliptical core 7 and abuts against one side of the sealing bearing 9. Then, the handle 4 is inserted into the elliptical core 7. The screw is then inserted into the hole of the sealing bearing 9. The screw is rotated with a screwdriver to insert it into the handle 4, thus fixing the elliptical core 7 to the handle 4. When the handle 4 is rotated, the sealing bearing 9 reduces the friction of the elliptical core 7 and prevents the elliptical core 7 from causing wear on the hole in the outer panel 3, thereby reducing the resistance of the mechanical door lock during rotation.
[0024] See Figures 2-4It can be seen that a cover plate 11 is provided above and below the elliptical core 7. The cover plate 11 abuts against the inner wall of the outer panel 3. A U-shaped plate 12 is slidably connected to one side of the upper cover plate 11. The U-shaped plate 12 abuts against the elliptical core 7 and is slidably connected to the inner wall of the outer panel 3. A spring 13 is connected above the U-shaped plate 12. The other end of the spring 13 abuts against the inner wall of the outer panel 3.
[0025] In practice, the elliptical surface on the elliptical core 7 reduces the resistance during rotation. When the rotating handle 4 drives the elliptical core 7 to rotate, the elliptical surface of the elliptical core 7 abuts against the U-shaped plate 12, pushing the U-shaped plate 12 to compress the spring 13. When the handle 4 is released, the spring 13 pushes the U-shaped plate 12 to reset, compressing the elliptical surface on the elliptical core 7, and rotating the elliptical core 7 and the handle 4 back to their original positions, preventing the elliptical core 7 from getting stuck and unable to reset, thus preventing the mechanical door lock from getting stuck.
[0026] In summary: When using this type of mechanical door lock with bearings, firstly, a cavity is opened on the door, the lock body 2 is placed into the cavity, and then the lock body 2 is fixed in the cavity with screws. The lock cylinder and the square transmission steel bar 8 are inserted into the lock body 2. Then, the inner panel 1 is placed on the door, inside the room, and the outer panel 3 is placed on the other side of the door, outside the room, so that the lock cylinder and the square transmission steel bar 8 are both inserted into the inner panel 1 and the outer panel 3. Then, the inner panel 1, the lock body 2, and the outer panel 3 are fixed to the door with bolts. Then, the snap box for engaging the bolt is installed on the door frame. After inserting the key and rotating it, the bolt is released from its limit. Then, the handle 4 is turned to rotate the elliptical core 7 and the square transmission steel bar 8, pulling the bolt out of the snap box. Pushing the handle 4 will rotate and open the door. The contents not described in detail in this description are existing technologies known to those skilled in the art.
[0027] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A mechanical door lock with bearings, comprising: The inner panel (1), lock body (2), outer panel (3), and handle (4) are characterized in that; One side of the inner panel (1) abuts against the lock body (2), and the other side of the lock body (2) abuts against the outer panel (3). The inner panel (1), lock body (2) and outer panel (3) are fixed together by bolts. One side of the inner panel (1) and the outer panel (3) abuts against the handle (4). Panel sealing gaskets (5) abut between the inner panel (1) and the lock body (2) and between the lock body (2) and the outer panel (3). A lock cylinder sealing ring (6) is slidably connected to the inner wall of the outer panel (3). An elliptical core (7) is rotatably connected to the inner wall of the outer panel (3) through a through hole. The elliptical core (7) is inserted into the handle (4) through a slot, and a screw is threaded into the elliptical core (7). The screw is threaded into the handle (4). A square transmission steel bar (8) is slidably connected inside the elliptical core (7) away from the handle (4). The square transmission steel bar (8) slides through the lock body (2). A sealed bearing (9) is sleeved on the outside of the elliptical core (7). The sealed bearing (9) is placed on the inner wall of the through hole through which the elliptical core (7) passes in the outer panel (3).
2. A mechanical door lock with bearings according to claim 1, characterized in that: The sealing bearing (9) has a barrier pad (10) on one side. The barrier pad (10) is placed on the inner wall of the through hole through which the elliptical core (7) passes in the outer panel (3), and the barrier pad (10) is abutted on one side of the handle (4). The barrier pad (10) is sleeved on the outside of the elliptical core (7).
3. A mechanical door lock with bearings according to claim 1, characterized in that: Cover plates (11) are provided above and below the elliptical core (7), and the cover plates (11) abut against the inner wall of the outer panel (3).
4. A mechanical door lock with bearings according to claim 3, characterized in that: A U-shaped plate (12) is slidably connected to one side of the upper cover plate (11). The U-shaped plate (12) abuts against the elliptical core (7) and is slidably connected to the inner wall of the outer panel (3). A spring (13) is connected above the U-shaped plate (12), and the other end of the spring (13) abuts against the inner wall of the outer panel (3).