Adjustable bolt box

Abstract

The utility model discloses an adjustable bolt box, and aims to provide an adjustable bolt box which is eccentric in design, wider in adjusting range and capable of avoiding noise in a limited mode, the adjustable bolt box comprises an outer box body and an inner box body, the outer box body comprises an integrally-formed mounting plate part and an inserting groove part, the inserting groove part and the mounting plate part are arranged in an eccentric mode, and the inserting groove part is used for being matched with a spring bolt. The mounting plate part is concaved inwards to form an adjusting groove, the inserting groove part is concaved inwards to form an inserting groove, the adjusting groove is formed above the inserting groove, the adjusting groove and the inserting groove are communicated with each other, the inner box body is arranged in the outer box body in a matched mode through the inserting groove, and an adjusting key groove and a positioning hole are formed in the bottom of the inner box body. And an adjusting plate matched in the adjusting groove is integrally formed on the surface of the inner box body.

Description

Technical Field

[0001] This utility model relates to the field of door lock accessories technology, specifically an adjustable latch box. Background Technology

[0002] In the field of door locks, the lock body is generally fixedly installed on the door, and the bolt box is installed in a pre-cut groove in the door frame. The existing bolt box is generally a one-piece metal structure with grooves for the lock tongue or bolt of the lock body to enter. Traditionally, the position between the lock tongue and the bolt box is fixed after the door is installed and cannot be adjusted. However, during the production and assembly process, the positional relationship between the lock tongue and the bolt box is prone to errors, which can cause the lock tongue and the bolt box to not be tightly connected. This allows the locked door to still move relative to the bolt, which can easily generate noise. Therefore, further optimization and improvement are needed. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing an adjustable latch box with an eccentric design, a wider adjustment range, and limited noise reduction.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] An adjustable latch box includes an outer box and an inner box. The outer box includes an integrally formed mounting plate and an insertion groove that is eccentrically disposed with the mounting plate and engages with a latch. The mounting plate is recessed and forms an adjustment groove, and the insertion groove is recessed and forms an insertion groove. The adjustment groove is positioned above the insertion groove and the two are interconnected. The inner box is fitted inside the outer box through the insertion groove. The bottom of the inner box has an adjustment keyway and a positioning hole. An adjustment plate that engages with the adjustment groove is integrally formed on the surface of the inner box.

[0006] Preferably, the bottom of the outer casing is provided with a horizontal through hole corresponding to the adjustment keyway and a vertical through hole corresponding to the positioning hole.

[0007] Preferably, the inner box is provided with an eccentric positioning member, one end of which is fitted into the positioning hole of the inner box and the other end is fitted into the vertical through hole.

[0008] Preferably, the inner box is further provided with an adjusting bolt, which passes through the adjusting keyway and the horizontal through hole and is fixed with a locking nut.

[0009] Preferably, the inner box is recessed and has a fitting groove, and a tapered sleeve is attached to the groove wall.

[0010] Preferably, mounting holes are provided at the center positions of both ends of the mounting plate.

[0011] Preferably, the outer box is made of stainless steel and the inner box is made of plastic.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This practical adjustable latch box structure, by setting an eccentric insertion slot (the insertion slot is not set in the exact center of the outer box), allows for installation in different slot positions by rotating 180° during installation, achieving a wide range of adjustments. This reduces the operator's requirement for precise control over the positional relationship between the latch and the latch box, making installation easier.

[0014] 2. This practical adjustable latch box structure allows for fine-tuning of the inner and outer boxes after the inner and outer boxes are properly fitted. This is achieved by adjusting the inner box's adjustment plate on the outer box's adjustment slot, further reducing the operator's precision requirements in controlling the positional relationship between the latch and the latch box, facilitating installation. Additionally, the tapered sleeve design inside the inner box minimizes the latch engagement gap to near zero, effectively preventing noise issues caused by gaps. Attached Figure Description

[0015] Figure 1 This is an exploded view of an adjustable latch box according to the present invention.

[0016] Figure 2 This is an assembly drawing of an adjustable latch box according to the present invention.

[0017] Figure 3 This is a half-sectional schematic diagram of the present utility model AA. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1-3An adjustable latch box includes an outer box 1 and an inner box 2. The outer box 1 includes an integrally formed mounting plate portion 11 and an insertion groove portion 12 eccentrically disposed with the mounting plate portion 11 and for engaging with the latch tongue. The mounting plate portion 11 is recessed and forms an adjustment groove 3, and the insertion groove portion 12 is recessed and forms an insertion groove 4. The adjustment groove 3 is positioned above the insertion groove 4 and the two are interconnected. The inner box 2 is fitted inside the outer box 1 through the insertion groove 4. The bottom of the inner box 2 is provided with an adjustment keyway 5 and a positioning hole 6. The inner box 2 has an integrally formed adjustment plate 21 that fits in the adjustment groove 3. By setting an eccentric insertion groove 12 (the insertion groove 12 is not set in the exact center of the outer box 1), it is possible to install in different slot positions by rotating 180° during installation, achieving a wide range of adjustments. Furthermore, the adjustment plate 21 of the inner box 2 can be moved to make fine adjustments on the adjustment groove 3 of the outer box 1, reducing the operator's requirements for the precision of controlling the positional relationship between the latch and the bolt box, and facilitating installation.

[0020] The bottom of the outer box 1 is provided with a horizontal through hole 7 corresponding to the adjustment keyway 5 and a vertical through hole 8 corresponding to the positioning hole 6. The adjustment keyway 5 and the horizontal through hole 7 are provided to ensure that the adjustment plate 21 of the inner box 2 is finely adjusted in the horizontal direction on the adjustment groove 3 of the outer box 1, while the positioning hole 6 and the vertical through hole 8 are provided to ensure that the adjustment plate 21 is finely adjusted in the vertical direction on the adjustment groove 3.

[0021] An eccentric positioning component 9 is provided on the inner box 2. One end of the eccentric positioning component 9 is fitted into the positioning hole 6 of the inner box 2, and the other end is fitted into the vertical through hole 8. The eccentric positioning component 9 ensures that the adjusting plate 21 is positioned in the vertical direction of the adjusting groove 3.

[0022] The inner box 2 is also provided with an adjusting bolt 22. The adjusting bolt 10 passes through the adjusting keyway 5 and the horizontal through hole 7 and is fixed with a locking nut 23. The adjusting bolt 22 and the locking nut 23 ensure locking after fine adjustment.

[0023] The inner box 2 is recessed and has a mating groove 24. A tapered sleeve 10 is attached to the groove wall of the mating groove 24. The tapered sleeve 10 is made of nylon material so that the gap between the locking tongue and the mating groove 24 is extremely small and close to zero, which can avoid noise problems caused by gaps.

[0024] Mounting holes 111 are provided at the center of both ends of the mounting plate 11. The mounting holes 111 ensure that the outer box 1 is locked to the door frame.

[0025] The outer box 1 is made of stainless steel, and the inner box 2 is made of plastic.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable latch box, comprising an outer box and an inner box, characterized in that: The outer box includes an integrally formed mounting plate and an insertion slot that is eccentrically positioned with the mounting plate and engages with a locking tongue. The mounting plate is recessed and forms an adjustment slot, and the insertion slot is recessed and forms an insertion slot. The adjustment slot is positioned above the insertion slot and the two are interconnected. The inner box is fitted inside the outer box via the insertion slot. The bottom of the inner box is provided with an adjustment keyway and a positioning hole. An adjustment plate that engages with the adjustment slot is integrally formed on the surface of the inner box.

2. The adjustable latch box according to claim 1, characterized in that: The bottom of the outer casing is provided with a horizontal through hole corresponding to the adjustment keyway and a vertical through hole corresponding to the positioning hole.

3. An adjustable latch box according to claim 2, characterized in that: The inner box is provided with an eccentric positioning component, one end of which is fitted into the positioning hole of the inner box, and the other end is fitted into the vertical through hole.

4. An adjustable latch box according to claim 3, characterized in that: The inner box is also equipped with an adjusting bolt, which passes through the adjusting keyway and the horizontal through hole and is fixed with a locking nut.

5. An adjustable latch box according to claim 1, characterized in that: The inner box is recessed and has a fitting groove, and a tapered sleeve is attached to the groove wall.

6. An adjustable latch box according to any one of claims 1-5, characterized in that: Mounting holes are provided at the center positions of both ends of the mounting plate.

7. An adjustable latch box according to any one of claims 1-5, characterized in that: The outer box is made of stainless steel, and the inner box is made of plastic.

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