Adjustable single-tongue lock tongue box assembly
By setting a positioning plate and a locking tongue groove meshing structure in the locking tongue box assembly, the problem of locking tongue box offset when closing the door is solved, achieving a tight connection between the door and the door frame and a silent effect.
Patent Information
- Application Number
- CN202520079468.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-01-14
AI Technical Summary
After the existing latch box is installed, it is easy for the latch box to shift when the door is closed due to excessive force, resulting in a gap between the door and the door frame.
An adjustable single-tongue lock tongue box assembly was designed. By setting a positioning plate and a lock tongue groove on the panel, the first concave and convex edge of the positioning plate engages with the second concave and convex edge of the lock tongue box to achieve stable fixation of the lock tongue box and avoid displacement.
This effectively prevents the latch box from shifting when the door is closed due to force, maintaining a tight connection between the door and the door frame and improving noise reduction.
Smart Images

Figure CN223767298U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of lock tongue box, especially to an adjustable single tongue lock tongue box assembly. BACKGROUND
[0002] Locks are the tools for closing, which include locks, keys and their accessories. The lock body is installed on the door, and the lock tongue box is installed on the door frame. The position of the lock tongue socket of the lock tongue box must be accurate, so that the lock tongue of the door lock can enter the lock tongue socket when the door is closed. In this way, the lock tongue can extend and retract smoothly.
[0003] The lock tongue box on the market generally includes a panel and a lock tongue box body. Two sets of screw holes are provided on the panel. One set has two screw holes arranged in an upper and lower manner. The outermost two screw holes are mainly used to fix the panel and the lock tongue box on the door frame. The middle two screw holes are mainly used to adjust the front and rear positions of the lock tongue box for fixation. The middle two screw holes correspond to the two end screw holes of the lock tongue box. The screw holes of the lock tongue box are wider, mainly for front and rear movement adjustment. After adjustment, the door frame and the door fit better, and the silent effect is better. However, if the adjustment is not good, a gap may appear between the door and the frame. Therefore, after the existing lock tongue box is installed, when the door is pushed in the closed state, the lock tongue box body may be easily offset due to excessive force, causing a gap between the door and the door frame. UTILITY MODEL CONTENTS
[0004] The utility model aims to provide an adjustable single tongue lock tongue box assembly, which solves the problem that the existing lock tongue box in the prior art is easily offset after installation, causing a gap between the door and the door frame when the door is pushed in the closed state due to excessive force.
[0005] The utility model aims to achieve the above-mentioned technical scheme.
[0006] The utility model aims to provide an adjustable single tongue lock tongue box assembly, which includes a panel and a lock tongue box. Two end positions on the panel are provided with first screw holes. Lock tongue holes are arranged between the first screw holes. The lock tongue box is attached to the panel. Two end positions of the lock tongue box are provided with second screw holes corresponding to the first screw holes. The width of the second screw holes is greater than that of the first screw holes. A lock tongue groove is arranged at the middle position of the lock tongue box. Positioning pieces are arranged at the upper and lower end positions of the lock tongue hole of the panel. The positioning pieces extend into the lock tongue groove in the direction of the lock tongue box. First concave-convex edges are arranged at the end positions of the positioning pieces. Second concave-convex edges corresponding to the first concave-convex edges are arranged at the upper and lower end positions in the lock tongue groove. The first concave-convex edges are in engagement with the second concave-convex edges. The width of the first concave-convex edges is less than that of the second concave-convex edges.
[0007] A shielding piece is provided on one side of the positioning piece mentioned above.
[0008] An extension piece is provided on one side of the panel described above, and the end of the extension piece has a curved edge in the direction of the latch box.
[0009] The left and right ends of the aforementioned locking tongue groove are chamfered.
[0010] Compared with the prior art, this utility model has the following advantages:
[0011] 1) This utility model describes an adjustable single-tongue lock tongue box assembly, including a panel and a lock tongue box. First screw holes are provided at both ends of the panel, and a lock tongue hole is provided between the first screw holes. The lock tongue box fits snugly against the panel. Second screw holes, corresponding to the first screw holes, are provided at both ends of the lock tongue box. The width of the second screw holes is greater than the width of the first screw holes. A lock tongue groove is provided in the middle of the lock tongue box. Positioning pieces are provided at the upper and lower ends of the lock tongue hole on the panel, extending towards the lock tongue box. A first concave-convex edge is provided at the end of the positioning piece. Second concave-convex edges, corresponding to the first concave-convex edges, are provided at the upper and lower ends of the lock tongue groove. The first and second concave-convex edges mesh with each other. The width of the first concave-convex edge is less than the width of the second concave-convex edge. By providing positioning pieces at the upper and lower ends of the lock tongue hole, the first and second concave-convex edges on the positioning pieces mesh with each other, thus preventing the lock tongue box from shifting when the door handle is pushed while the door is closed, maintaining a tight seal between the door and the door frame.
[0012] 2) Other advantages of this utility model are described in detail in the embodiment section of the specification. Attached image description:
[0013] Figure 1 This is a perspective view of the adjustable single-tongue lock box assembly provided in this embodiment of the utility model;
[0014] Figure 2 This is a cross-sectional view of the adjustable single-tongue lock box assembly provided in this embodiment of the utility model;
[0015] Figure 3 This is a cross-sectional view of the adjustable single-tongue lock box assembly provided in this embodiment of the utility model;
[0016] Figure 4 This is an exploded view of the adjustable single-tongue lock box assembly provided in this embodiment of the utility model;
[0017] Figure 5 This is an exploded view of the adjustable single-tongue lock box assembly provided in this embodiment of the utility model. Detailed implementation method:
[0018] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.
[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.
[0020] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.
[0021] like Figures 1 to 5As shown, this embodiment provides an adjustable single-latch latch box assembly, including a panel 1 and a latch box 2. First screw holes 101 are provided at both ends of the panel 1, and a latch hole 102 is provided between the first screw holes 101. The latch box 2 is fitted to the panel 1 and then installed on a door frame. Second screw holes 201 corresponding to the first screw holes 101 are provided at both ends of the latch box 2. Screws are used to fix it to the door frame through the first screw holes 101 and the second screw holes 201. The width of the second screw hole 201 is greater than the width of the first screw hole 101, allowing the latch box 2 to be adjusted to correspond to the latch on the door. A latch groove 202 is provided in the middle of the latch box 2, into which the latch extends. Positioning pieces 11 are provided at the upper and lower ends of the latch hole 102 on the panel 1. Positioning piece 11 extends towards the latch box 2 into the latch groove 202, and is located at both ends of the latch groove 202. The end of the positioning piece 11 is provided with a first concave-convex edge 111, and the upper and lower ends of the latch groove 202 are provided with a second concave-convex edge 203 corresponding to the first concave-convex edge 111. The first concave-convex edge 111 and the second concave-convex edge 203 mesh. The width of the first concave-convex edge 111 is smaller than the width of the second concave-convex edge 203, so that it can be adjusted. After adjustment, there will be no misalignment when meshing. By setting positioning pieces 11 at both ends of the latch hole 102, the first concave-convex edge 111 on the positioning piece 11 meshes with the second concave-convex edge 203. This can prevent the latch box 2 from being pushed off when the door handle is closed, and keep the door and the door frame in a tight state.
[0022] As an optional embodiment, a shielding piece 21 is provided on one side of the positioning piece 11. The shielding piece 21 can serve an aesthetic purpose by covering the second concave-convex edge 203.
[0023] As an optional embodiment, an extension piece 12 is provided on one side of the panel 1, and a curved edge 121 is provided at the end of the extension piece 12 toward the lock tongue box 2. The curved edge 121 is to prevent the lock tongue from damaging the door frame and to play a protective role.
[0024] As an optional embodiment, the left and right ends of the locking tongue groove 202 are provided with chamfers 204.
[0025] In existing technologies, when a door is closed and the latch box is pushed, excessive force can cause the latch box to shift, creating a gap between the door and the door frame. Therefore, an adjustable single-latch latch box assembly is proposed. Positioning pieces 11 are positioned at the upper and lower ends of the latch hole 102 on panel 1. These positioning pieces 11 extend into the latch groove 202 towards the latch box 2. A first concave-convex edge 111 is provided at the end of the positioning piece 11. Second concave-convex edges 203, corresponding to the first concave-convex edge 111, are positioned at the upper and lower ends of the latch groove 202. The first and second concave-convex edges 111 and 203 mesh, preventing the latch box 2 from shifting when the door is closed and maintaining a tight seal between the door and the door frame. Furthermore, the positioning pieces 11 can be adjusted back and forth within the latch groove 202, and then fixed in place.
[0026] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited thereto. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model are equivalent substitutions and are included within the protection scope of the present utility model.
Claims
1. An adjustable single tongue lock tongue box assembly, comprising a panel (1) and a lock tongue box (2), two end positions of the panel (1) are provided with first screw holes (101), the first screw holes (101) are provided with a lock tongue hole (102) between them, the lock tongue box (2) is attached to the panel (1), two end positions of the lock tongue box (2) are provided with second screw holes (201) corresponding to the first screw holes (101), the width of the second screw holes (201) is greater than the width of the first screw holes (101), and a lock tongue groove (202) is arranged at the middle position of the lock tongue box (2), characterized in that: The upper and lower ends of the panel (1) lock tongue hole (102) are provided with positioning pieces (11), which extend into the lock tongue groove (202) in the direction of the lock tongue box (2), the end position of the positioning piece (11) is provided with a first concave-convex edge (111), the upper and lower ends of the lock tongue groove (202) are provided with a second concave-convex edge (203) corresponding to the first concave-convex edge (111), the first concave-convex edge (111) is engaged with the second concave-convex edge (203), and the width of the first concave-convex edge (111) is smaller than that of the second concave-convex edge (203).
2. An adjustable single tongue and lock tongue box assembly according to claim 1, wherein: One side of the positioning piece (11) is provided with a shielding piece (21).
3. An adjustable single tongue and lock tongue box assembly according to claim 1, wherein: One side of the panel (1) is provided with an extension piece (12), and the end of the extension piece (12) is provided with a curved edge (121) in the direction of the lock tongue box (2).
4. An adjustable single tongue and lock tongue box assembly according to claim 3, wherein: The left and right ends of the lock tongue groove (202) are provided with chamfers (204).