Door lock with multi-lock-cylinder structure
By setting a limit bump and a limit stop on the connecting shaft of the door lock and combining it with an arc spring, the problem of easy damage to the handle when turning in the traditional multi-lock cylinder structure is solved, limiting and buffering protection is achieved, the service life is extended, and the safety and aesthetics are improved.
Patent Information
- Application Number
- CN202422328079.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-24
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-09-24
AI Technical Summary
Traditional multi-cylinder door locks are easily damaged by violent collisions during the turning of the handle, lack of limit and buffer protection, and affect their service life.
A limit protrusion and a limit stop are set on the connecting shaft of the door lock. Combined with the arc spring and the sliding chamber, the limit protrusion and the limit stop cooperate to achieve limiting and buffering protection of the handle rotation range to prevent violent collisions.
It effectively extends the service life of the door lock, prevents wear of the handle and the inner parts of the lock body, and improves safety and aesthetics.
Smart Images
Figure CN223374226U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of door locks, in particular to a door lock with a multi-lock core structure. Background Art
[0002] In the development history of door lock technology, the traditional pin tumbler lock cylinder structure has gradually exposed more and more security risks due to its singleness and technical limitations. Traditional pin tumbler locks usually have only one lock cylinder. This design makes the lock particularly vulnerable when facing violent opening or technical unlocking. Specifically, when a lock with a single lock cylinder is illegally intruded, such as using special unlocking tools or master keys, it can be easily cracked, posing certain security risks.
[0003] In order to solve these problems, door lock technology continues to develop in the direction of diversification and complexity. Among them, door locks with multi-cylinder structures have become an important research direction. Door locks with multi-cylinder structures significantly improve the security and complexity of locks by setting multiple lock cylinders and multiple sets of locking mechanisms in one lock body. At present, most door locks on anti-theft doors are equipped with multiple lock cylinder structures.
[0004] However, door locks with multiple lock cylinders require a handle to open them, and the handle is turned to open them. During the turning process, the handle's coupling is susceptible to damage due to excessive force. For example, excessive force on the handle can cause a violent collision between the coupling and the parts inside the lock body, leading to wear. This type of door lock lacks components that can limit the handle's rotation range and provide buffering protection, which is not conducive to limiting and buffering the handle during rotation and is not conducive to extending its service life. In view of this, we propose a door lock with a multi-lock cylinder structure. Utility Model Content
[0005] The purpose of the present invention is to provide a door lock with a multi-lock cylinder structure to solve the defects mentioned in the above background technology.
[0006] To achieve the above objectives, the present invention provides the following technical solutions:
[0007] The locking mechanism is configured to lock the door lock body and unlock the door, wherein the locking mechanism has a lock core and a plurality of lock cores arranged on the locking mechanism, the lock core having a lock core and a plurality of lock cores arranged on the locking mechanism. The locking mechanism comprises a door lock panel on the front side of the door lock panel, a handle being rotatably connected to the door lock panel by a connecting shaft, the connecting shaft being transmission-connected to the inside of the mechanical lock body, the limiting protrusion being fixedly installed on the connecting shaft, a limiting ring being fixedly installed on the front side surface of the door lock panel, the limiting ring being sleeved on the connecting shaft, a shaft hole being provided in the limiting ring, the connecting shaft passing through the shaft hole, an arc-shaped hole being provided on the hole wall of the shaft hole, the limiting protrusion being located in the arc-shaped hole and rotatably connected between the
[0008] Preferably, the size of the limiting protrusion is adapted to the size of the arc-shaped hole, and the size of the connecting shaft is adapted to the size of the shaft hole.
[0009] Preferably, the cross section of the sliding chamber is arc-shaped, the opening of the sliding chamber is connected to the arc-shaped hole, and the end of the limit block passes through the opening of the sliding chamber.
[0010] Preferably, the size of the limit block is adapted to the size of the sliding chamber, and both ends of the arc spring are fixedly mounted on the end surface of the limit block and the end chamber of the sliding chamber respectively.
[0011] Preferably, an end anti-collision pad is fixedly installed between the other end of the central arc-shaped sleeve and the inner wall of the limiting ring.
[0012] Preferably, an end plate is fixedly mounted on the end of the mechanical lock body, the end plate is fixedly mounted on the door body by a plurality of fastening screws, and a keyhole is provided on the door lock panel.
[0013] Preferably, a front shielding cover is fixedly mounted on the coupling shaft, and the front shielding cover covers the front side of the limiting ring.
[0014] Preferably, the handle is covered with a rubber anti-slip sleeve, and the size of the rubber anti-slip sleeve is adapted to the size of the handle.
[0015] Compared with the prior art, the beneficial effects of the present invention are:
[0016] 1. The utility model is provided with a mechanical lock body and a handle, and a limit protrusion is provided on the handle. At the same time, a limit ring, a limit stop and an arc spring are provided on the door lock panel to ensure that as the handle is rotated, the limit protrusion is driven to rotate. After the limit protrusion abuts against the limit stop, the limit stop squeezes the arc spring, which can play a buffering and limiting effect, so that the connecting shaft is not likely to collide violently with the components in the mechanical lock body during rotation, thereby prolonging the service life.
[0017] 2. The utility model has a front shielding cover plate to shield the front side of the limit ring, preventing hands from getting stuck in the limit ring and causing injuries. At the same time, the front shielding cover plate shields the limit ring, which is also conducive to improving the aesthetics. Finally, the rubber anti-slip cover can achieve an anti-slip effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0019] Figure 2 This is one of the partial structural diagrams of the utility model;
[0020] Figure 3 This is the second schematic diagram of the partial structure of the utility model;
[0021] Figure 4 This is a cross-sectional view of the limiting ring of the utility model;
[0022] The meaning of each number in the figure is:
[0023] 1. Mechanical lock body; 10. End plate; 11. Lock core; 12. Door lock panel; 121. Keyhole; 13. Handle; 131. Connecting shaft; 14. Positioning protrusion; 15. Front shielding cover;
[0024] 2. Rubber anti-slip cover;
[0025] 3. Limiting ring; 30. Shaft hole; 301. Arc hole; 31. Center arc sleeve; 32. End anti-collision pad; 33. Sliding chamber; 34. Arc spring; 35. Limit block. DETAILED DESCRIPTION
[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0027] See also Figure 1-Figure 4 The utility model provides a technical solution: a door lock with a multi-lock core structure, comprising a mechanical lock body 1 and a plurality of lock cores 11 arranged on the mechanical lock body 1, a door lock panel 12 is arranged on the front side of the mechanical lock body 1, and a handle 13 is rotatably connected to the door lock panel 12 through a connecting shaft 131, the connecting shaft 131 is connected to the internal transmission of the mechanical lock body 1, a limiting protrusion 14 is fixedly installed on the connecting shaft 131, a limiting ring 3 is fixedly installed on the front side of the door lock panel 12, the limiting ring 3 is sleeved on the connecting shaft 131, an axis hole 30 is arranged in the limiting ring 3, the connecting shaft 131 passes through the axis hole 30, an arc-shaped hole 301 is arranged on the hole wall of the axis hole 30, and the limiting protrusion 14 is located at The arc hole 301 is rotatably connected with the arc hole 301, and a center arc sleeve 31 is fixedly installed on the hole wall of the shaft hole 30. A sliding chamber 33 is provided between the center arc sleeve 31 and the inner wall of the limit ring 3. A limit stop 35 is slidably connected in the sliding chamber 33, and an arc spring 34 is provided between the limit stop 35 and the end cavity wall of the sliding chamber 33 to ensure that when in use, the center arc sleeve 31 can be used to limit the rotation range of the connecting shaft 131, and through the provided arc spring 34, as the limit protrusion 14 squeezes the limit stop 35 and compresses the arc spring 34, it can play a buffering and protective role and is not easy to wear.
[0028] In this embodiment, the size of the limiting protrusion 14 is adapted to the size of the arc-shaped hole 301 , and the size of the connecting shaft 131 is adapted to the size of the shaft hole 30 , for stable rotation operation of the limiting protrusion 14 and the connecting shaft 131 .
[0029] Specifically, the cross-section of the sliding chamber 33 is arc-shaped, the opening of the sliding chamber 33 is connected to the arc-shaped hole 301, and the end of the limit block 35 passes through the opening of the sliding chamber 33, so that the limit protrusion 14 moves to abut against the limit block 35, which can achieve a certain limiting effect.
[0030] Furthermore, the size of the limit block 35 is adapted to the size of the sliding chamber 33, and the two ends of the arc spring 34 are fixedly mounted on the end face of the limit block 35 and the end chamber of the sliding chamber 33, respectively, so that the limit block 35 can slide stably.
[0031] In addition, an end anti-collision pad 32 is fixedly installed between the other end of the central arc sleeve 31 and the inner wall of the limiting ring 3. The end anti-collision pad 32 can limit the limiting protrusion 14 from the other end.
[0032] It is worth noting that an end plate 10 is fixedly installed at the end of the mechanical lock body 1, and the end plate 10 is fixedly installed on the door body by a plurality of fastening screws. A keyhole 121 is provided on the door lock panel 12, and the keyhole 121 is used for key insertion operation.
[0033] It is worth noting that a front shielding cover 15 is fixedly installed on the connecting shaft 131, and the front shielding cover 15 covers the front side of the limiting ring 3. The setting of the front shielding cover 15 can prevent people's hands from getting stuck in the limiting ring 3. In addition, the front shielding cover 15 covering the front side of the limiting ring 3 can have an aesthetic effect.
[0034] In this embodiment, a rubber anti-slip sleeve 2 is provided on the handle 13 . The size of the rubber anti-slip sleeve 2 matches the size of the handle 13 . The provision of the rubber anti-slip sleeve 2 can provide an anti-slip effect.
[0035] When the handle 13 is released, the arc spring 34 returns to its original state, which can drive the limit stop 35 to be ejected outward, thereby driving the limit protrusion 14 to rotate to restore to its original state.
[0036] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.
Claims
1. A door lock with a multi-lock core structure, comprising a mechanical lock body (1) and a plurality of lock cores (11) arranged on the mechanical lock body (1), characterized in that: The front side of the mechanical lock body (1) is provided with a door lock panel (12), and the door lock panel (12) is rotatably connected to a handle (13) via a connecting shaft (131). The connecting shaft (131) is in transmission connection with the interior of the mechanical lock body (1). A limiting protrusion (14) is fixedly installed on the connecting shaft (131), and a limiting ring (3) is fixedly installed on the front side of the door lock panel (12). The limiting ring (3) is sleeved on the connecting shaft (131), and an axial hole (30) is provided in the limiting ring (3). The connecting shaft (131) passes through the axial hole (30). An arc-shaped hole (301) is provided on the hole wall of the shaft hole (30), the limiting protrusion (14) is located in the arc-shaped hole (301) and is rotatably connected to the arc-shaped hole (301), a central arc-shaped sleeve (31) is fixedly installed on the hole wall of the shaft hole (30), a sliding chamber (33) is provided between the central arc-shaped sleeve (31) and the inner wall of the limiting ring (3), a limiting block (35) is slidably connected in the sliding chamber (33), and an arc-shaped spring (34) is provided between the limiting block (35) and the end cavity wall of the sliding chamber (33).
2. The door lock with a multi-cylinder structure according to claim 1, characterized in that: The size of the limiting protrusion (14) is adapted to the size of the arc-shaped hole (301), and the size of the connecting shaft (131) is adapted to the size of the shaft hole (30).
3. The door lock with a multi-cylinder structure according to claim 1, characterized in that: The cross section of the sliding chamber (33) is arc-shaped, the opening of the sliding chamber (33) is connected to the arc-shaped hole (301), and the end of the limit block (35) passes through the opening of the sliding chamber (33).
4. The door lock with a multi-cylinder structure according to claim 1, characterized in that: The size of the limit block (35) is adapted to the size of the sliding chamber (33), and the two ends of the arc spring (34) are fixedly mounted on the end surface of the limit block (35) and the end chamber of the sliding chamber (33), respectively.
5. The door lock with a multi-cylinder structure according to claim 1, characterized in that: An end anti-collision pad (32) is fixedly installed between the other end of the central arc-shaped sleeve (31) and the inner wall of the limiting ring (3).
6. The door lock with a multi-cylinder structure according to claim 1, characterized in that: An end plate (10) is fixedly mounted on the end of the mechanical lock body (1); the end plate (10) is fixedly mounted on the door body via a plurality of fastening screws; and a keyhole (121) is provided on the door lock panel (12).
7. The door lock with a multi-cylinder structure according to claim 1, characterized in that: A front shielding cover plate (15) is fixedly mounted on the connecting shaft (131), and the front shielding cover plate (15) covers the front side of the limiting ring (3).
8. The door lock with a multi-cylinder structure according to claim 1, characterized in that: The handle (13) is covered with a rubber anti-slip sleeve (2), and the size of the rubber anti-slip sleeve (2) is adapted to the size of the handle (13).