Lock body
By setting guide tubes and limiting parts on the lock body shell, the problem of the lock cylinder decorative cover not being able to be securely connected is solved, and the lock cylinder decorative cover is securely installed, improving anti-theft performance while maintaining aesthetics.
Patent Information
- Application Number
- CN202423242289.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-12-27
AI Technical Summary
The existing decorative panel design of lock bodies has poor anti-theft performance, especially the decorative cover of the lock cylinder, which cannot be connected with screws and is easily removed.
A lock body structure is designed, wherein the shell is provided with a guide tube, the lock cylinder and lock tongue have a movable notch and a limiting part, the guide tube is located on the axis of symmetry of the lock cylinder and lock tongue, and the outer and inner lock cylinder decorative covers are connected by screws. The screws pass through the guide tube and connect with the threaded holes of the lock cylinder and lock tongue to achieve a stable installation of the lock cylinder decorative covers.
This design achieves a secure connection to the lock cylinder decorative cover, enhancing security while maintaining aesthetics and ease of installation.
Smart Images
Figure CN223647564U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a lock body, specifically a lock body installed on a door. Background Technology
[0002] For security, doors are equipped with lock bodies. A lock body typically includes a housing, lock cylinder, bolt, and handle bolt. The lock cylinder is also installed on the lock body. When a matching key is inserted into the lock cylinder and turned, it causes the lock cylinder bolt to retract. Turning the door handle then moves the handle bolt back, allowing the door to be opened. For aesthetics, decorative panels are usually installed on the inner and outer sides of the door. These panels conceal the holes in the door for the handle and lock cylinder. Current decorative panels, in order to cover these holes, are generally quite long, and the upper and lower ends of the inner and outer panels are connected by screws through the door. However, these long decorative panels are not very aesthetically pleasing. To improve aesthetics, current decorative panels use a split design: a handle cover for the door handle and a lock cylinder cover for the lock cylinder. This minimizes the area covered, leaving the outer surface of the door visible between the two covers, resulting in a more visually appealing design. However, because the lock cylinder is close to the lock cylinder bolt, the lock cylinder decorative cover cannot be connected to the lock body with screws (because the screws would be in the position of the lock cylinder bolt). Currently, it is first connected to the door with a backing plate, and then the lock cylinder decorative cover is clipped onto the backing plate. However, this structure makes the lock cylinder decorative cover easy to remove, resulting in poor anti-theft performance. Summary of the Invention
[0003] In view of the shortcomings of the existing technology, this utility model innovatively provides a lock body that allows screws to pass through the lock cylinder and bolt.
[0004] This lock body includes a housing and a lock cylinder and a bolt. The lock cylinder and bolt are slidably disposed within the housing. The housing has a lock cylinder hole through which the lock cylinder passes. The lock body is characterized by having a guide tube that extends through both sides of the housing. The guide tube is located on the axis of symmetry A of the lock cylinder hole and at a position corresponding to the lock cylinder and bolt. The lock cylinder and bolt have a movable recess, and the guide tube is located within the movable recess of the lock cylinder and bolt. The lock cylinder and bolt have a limiting part that is disposed within the housing and restricts the lock cylinder and bolt to extend only a predetermined length.
[0005] The outer side of the housing is fitted with an outer lock cylinder decorative cover, and the inner side of the housing is fitted with an inner lock cylinder decorative cover. The upper and lower ends of the inner side of the outer lock cylinder decorative cover are provided with threaded holes, and the upper and lower ends of the inner lock cylinder decorative cover are provided with screw holes. The upper end of the outer lock cylinder decorative cover and the upper end of the inner lock cylinder decorative cover can be connected by a first screw, which can pass through the screw hole and guide tube of the inner lock cylinder decorative cover and be threadedly connected to the threaded hole of the outer lock cylinder decorative cover. The lower end of the outer lock cylinder decorative cover and the lower end of the inner lock cylinder decorative cover can be connected by a second screw, which can pass through the screw hole of the inner lock cylinder decorative cover and be threadedly connected to the threaded hole of the outer lock cylinder decorative cover.
[0006] The threaded hole is either a blind threaded hole or a through threaded hole.
[0007] The screw hole is a countersunk hole, countersunk hole, through hole, or countersunk flat hole.
[0008] The lock cylinder and the lock tongue are provided with limiting parts on both the upper and lower sides, and the limiting parts are stuck in the housing.
[0009] According to the lock body provided by this utility model, the outer lock cylinder decorative cover and the inner lock cylinder decorative cover corresponding to the lock cylinder can be connected, which not only makes installation convenient, but also enhances the anti-theft performance. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the structure of this utility model;
[0011] Figure 2 This is a schematic diagram of the internal structure of the lock body;
[0012] Figure 3 This is the front view of the lock body. Detailed Implementation
[0013] like Figure 1 As shown, this lock body is used for installation on a door and includes a housing 1, a handle bolt 2, and a lock cylinder bolt 3. The lock cylinder bolt 3 is slidably disposed within the housing 1. The housing 1 has a lock cylinder hole 10 through which the lock cylinder passes and is installed on the housing 1. After the lock body is installed on the door, door handles (not shown) are installed on both sides of the lock body, and a lock cylinder (not shown) is also installed on the lock body. When the key is inserted into the lock cylinder and turned, it moves the lock cylinder bolt 3, thus unlocking the door; turning the door handle moves the handle bolt 2, thus opening the door normally.
[0014] In order to install the lock cylinder decorative cover, such as Figure 2 As shown, a conduit 4 is provided on the housing 1, which passes through both sides of the housing 1 (both ends of the housing 1 corresponding to the conduit 4 are provided with holes), as shown. Figure 3As shown, the guide tube 4 is located on the axis of symmetry A of the lock cylinder hole 10 and at the position corresponding to the lock cylinder bolt 3 (so that the connection point of the lock cylinder decorative cover is located on the center line B of the lock cylinder decorative cover, as shown). Figure 1 As shown, for products with symmetrical top and bottom, there is no need to worry about them being upside down during installation, making the structure more reasonable and installation more convenient. The lock cylinder and bolt 3 has a movable recess 30, and the guide tube 4 is located inside the movable recess 30 of the lock cylinder and bolt 3. When the lock cylinder and bolt 3 moves, it will not be affected by the guide tube 4. The guide tube 4 also guides the movement of the lock cylinder and bolt 3, keeping the lock cylinder and bolt 3 moving in parallel. The guide tube 4 is installed at the corresponding position of the lock cylinder and bolt 3, which allows the connection point of the lock cylinder decorative cover to be closer to the lock cylinder hole 10, thus allowing the lock cylinder decorative cover to be made smaller and more aesthetically pleasing. In addition, the lock cylinder and bolt 3 is provided with a limiting part 31, which is located inside the housing 1. Through the limitation of the limiting part 31, the lock cylinder and bolt 3 only extends a set length, which is the normal extension length of the lock cylinder and bolt 3.
[0015] like Figure 1 As shown, the lock cylinder decorative cover generally includes an inner lock cylinder decorative cover 6 and an outer lock cylinder decorative cover 7. Therefore, the outer side of the housing 1 is fitted with the outer lock cylinder decorative cover 7, which is located outside the door. The inner side of the housing 1 is fitted with the inner lock cylinder decorative cover 6, which is located inside the door. The upper and lower ends of the inner side of the outer lock cylinder decorative cover 7 are provided with threaded holes 70, and the upper and lower ends of the inner lock cylinder decorative cover 6 are provided with screw holes 60. During installation, the lock body is installed on the door, the outer lock cylinder decorative cover 7 is placed on the outer side of the door, and the inner lock cylinder decorative cover 6 is placed on the inner side of the door. The upper end of the outer lock cylinder decorative cover 7 and the upper end of the inner lock cylinder decorative cover 6 are connected by a first screw (the first screw is not shown). Figure 1 As shown, the first screw passes through the screw hole 60 of the inner lock cylinder decorative cover 6, the guide tube 4, and is threaded into the threaded hole 70 of the outer lock cylinder decorative cover 7. The lower end of the outer lock cylinder decorative cover 7 is connected to the lower end of the inner lock cylinder decorative cover 6 by a second screw (not shown). The second screw passes through the screw hole 60 of the inner lock cylinder decorative cover 6 and is threaded into the threaded hole 70 of the outer lock cylinder decorative cover 7 (the second screw does not need to pass through the housing 1). After both the first and second screws are tightened, the inner lock cylinder decorative cover 6 and the outer lock cylinder decorative cover 7 are clamped on both sides of the door, serving both decorative and protective functions for the lock cylinder. Since the heads of the first and second screws are located at the inner lock cylinder decorative cover 6, that is, on the inside of the door, people outside the door cannot remove the outer lock cylinder decorative cover under any circumstances, thus providing strong anti-theft performance. In addition, as mentioned above, this lock body structure allows the lock cylinder decorative cover to be minimized while facilitating installation, improving aesthetics.
[0016] The threaded hole 70 can be a blind threaded hole or a through threaded hole. If the threaded hole 70 is a blind threaded hole, the threaded hole will not be visible on the outer side of the outer lock cylinder decorative cover 7, resulting in a more aesthetically pleasing appearance. Of course, a through threaded hole can also be used. The screw hole 60 can be a countersunk hole, countersunk hole, through hole, or counterbored hole. If the screw hole 60 is a countersunk hole, countersunk hole, or counterbored hole, the screw head can be hidden, resulting in a more aesthetically pleasing appearance. Of course, a through hole can also be used.
[0017] Finally, it is worth mentioning that the lock cylinder bolt 3 has limiting parts 31 on both the upper and lower sides, and both limiting parts 31 are locked inside the housing 1. The two limiting parts 31 can share the force, thereby improving the service life of the lock cylinder bolt 3, and at the same time improving the stability of the lock cylinder bolt 3 when it extends.
Claims
1. A lock body comprising a housing (1) and a lock cylinder bolt (3), wherein the lock cylinder bolt (3) is slidably disposed within the housing (1), and the housing (1) has a lock cylinder hole (10) through which the lock cylinder passes, characterized in that: The housing (1) is provided with a conduit (4), which passes through both sides of the housing (1). The conduit (4) is located on the axis of symmetry (A) of the lock cylinder hole (10) and is located at the position corresponding to the lock cylinder tongue (3). The lock cylinder tongue (3) has a movable recess (30). The conduit (4) is located in the movable recess (30) of the lock cylinder tongue (3). The lock cylinder tongue (3) is provided with a limiting part (31). The limiting part (31) of the lock cylinder tongue (3) is located in the housing (1) and restricts the lock cylinder tongue (3) to only extend a set length.
2. A lock body according to claim 1, characterized in that: The outer side of the housing (1) is fitted with an outer lock cylinder decorative cover (7), and the inner side of the housing (1) is fitted with an inner lock cylinder decorative cover (6). The upper and lower ends of the inner side of the outer lock cylinder decorative cover (7) are provided with threaded holes (70), and the upper and lower ends of the inner lock cylinder decorative cover (6) are provided with screw holes (60). The upper end of the outer lock cylinder decorative cover (7) and the upper end of the inner lock cylinder decorative cover (6) can be connected by a first screw. The first screw can pass through the screw hole (60) of the inner lock cylinder decorative cover (6), the guide tube (4), and the threaded hole (70) of the outer lock cylinder decorative cover (7) for threaded connection. The lower end of the outer lock cylinder decorative cover (7) and the lower end of the inner lock cylinder decorative cover (6) can be connected by a second screw. The second screw can pass through the screw hole (60) of the inner lock cylinder decorative cover (6) and the threaded hole (70) of the outer lock cylinder decorative cover (7) for threaded connection.
3. A lock body according to claim 2, characterized in that: The threaded hole (70) is a blind threaded hole or a through threaded hole.
4. A lock body according to claim 2, characterized in that: The screw hole (60) is a countersunk hole, countersunk hole, through hole, or countersunk flat hole.
5. A lock body according to claim 1, characterized in that: The lock cylinder and the lock tongue (3) are provided with limiting parts (31) on both the upper and lower sides, and the limiting parts (31) are stuck in the housing (1).