Telescopic square steel shaft structure for lock

Abstract

The utility model discloses a telescopic square steel shaft structure for a lock. Comprising a first square steel shaft, and one end of the first square steel shaft is provided with an axially-arranged mounting cavity; the second square steel shaft is movably arranged at the mounting cavity; and the elastic unit is arranged in the mounting cavity and used for providing elastic force for the second square steel shaft. The telescopic lock catch is designed in a telescopic mode, the needed length is adjusted in a self-adaptive mode through the elastic unit, and the telescopic lock catch can be suitable for various locks and is good in universality and simple in structure.

Description

Technical Field

[0001] The utility model relates to the technical field of locks, in particular to a retractable square steel shaft structure for locks. Background Art

[0002] The square steel shaft is a component used to cooperate with the lock body in the lock. After the square steel shaft is inserted into the lock body, the rotation of the square steel shaft can drive the lock tongue of the lock body to stretch and retract, realizing the opening of the door lock.

[0003] Locks of different models or different categories have different length requirements for the square steel shaft. Some require a shorter square steel shaft, and some require a longer square steel shaft. Therefore, manufacturers usually process multiple square steel shafts with different lengths, and there is no universal square steel shaft. For this reason, the applicant proposes this application. Summary of the Utility Model

[0004] Aiming at the deficiencies in the prior art, the utility model provides a retractable square steel shaft structure for locks, which is designed to be retractable, and the required length is adaptively adjusted through an elastic unit, and it can be universal for various locks.

[0005] To solve the above technical problems, the utility model is solved by the following technical solutions:

[0006] A retractable square steel shaft structure for locks, including

[0007] A first square steel shaft, with an axially arranged installation cavity opened at one end thereof;

[0008] A second square steel shaft, which is movably arranged at the installation cavity; and

[0009] An elastic unit, which is arranged in the installation cavity and used to provide an elastic force for the second square steel shaft.

[0010] In the above solution, preferably, the shape of the installation cavity is square, and the shape of the part of the second square steel shaft located in the installation cavity is square.

[0011] In the above solution, preferably, the second square steel shaft includes a main body part arranged in the installation cavity and a head part arranged at one end of the main body part.

[0012] In the above solution, preferably, the shape and size of the head part are adapted to the shape and size of the first square steel shaft.

[0013] In the above solution, preferably, one end of the elastic unit abuts against the inner end wall of the installation cavity, and the other end abuts against the inner end of the second square steel shaft.

[0014] In the above solution, preferably, a flange is provided on the outer wall of the second square steel shaft, and the elastic unit is sleeved on the inner end of the second square steel shaft, with one end abutted against the inner end wall of the installation cavity and the other end abutted against the flange.

[0015] In the above solution, preferably, the elastic unit is a spring.

[0016] The beneficial effects of the present utility model are as follows:

[0017] The present utility model is designed in a telescopic form, and the required length is adaptively adjusted through the elastic unit, which can be applied to various types of locks, has good versatility, and a simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the present utility model.

[0019] Figure 2 It is a schematic diagram of the disassembled state of the present utility model.

[0020] Figure 3 It is a schematic diagram of the extended state of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The present utility model will be further described in detail below in conjunction with the drawings and the specific embodiments:

[0022] Refer to Figure 1 , the retractable square steel shaft structure for a lock includes a first square steel shaft 1, a second square steel shaft 2, and an elastic unit 3.

[0023] In this embodiment, an axially arranged installation cavity 11 is provided at one end of the first square steel shaft 1. Specifically, the installation cavity 11 can be provided at the middle position of the first square steel shaft 1, and the shape of the installation cavity 11 can be specifically selected according to actual needs, such as square, etc.

[0024] The depth of the installation cavity 11 can be arranged to be 1 / 2 - 4 / 5 of the overall length of the first square steel shaft 1. On the premise of ensuring the strength of the first square steel shaft 1, the depth of the installation cavity 11 is extended as much as possible.

[0025] For the second square steel shaft 2, it includes a main body part 21 installed in the installation cavity 11 and a head part 22 arranged at one end of the main body part 21. As one of the implementation manners, the main body part 21 and the head part 22 are integrally formed.

[0026] In this embodiment, after the main body part 21 is installed in the installation cavity 11, it can move along the installation cavity 11. As one of the implementation manners, the shape and size of the main body part 21 are adapted to the shape and size of the installation cavity 11, and it can slide along the inner wall of the installation cavity 11.

[0027] For the elastic unit 3, it is installed in the installation cavity 11 and is used to provide an elastic force for the second square steel shaft 2. Specifically, a spring can be selected, and there are various ways to cooperate with the second square steel shaft 2. The following are two implementation methods:

[0028] First, one end of the elastic unit 3 abuts against the inner end wall of the installation cavity 11, and the other end abuts against the inner end of the main body part 21 of the second square steel shaft 2.

[0029] Second, a flange is provided on the outer wall of the second square steel shaft 2. The elastic unit 3 is sleeved on the inner end of the second square steel shaft 2, and one end of it abuts against the inner end wall of the installation cavity 11, and the other end abuts against the flange.

[0030] For the head part 21 of the second square steel shaft 2, as an option, its shape and size are adapted to those of the first square steel shaft 1.

[0031] In specific use, the outer end of the first square steel shaft 1 is installed on the inner handle, the first square steel shaft 1 or the second square steel shaft 2 passes through the corresponding installation hole of the lock body and cooperates with the lock body. The outer end of the second square steel shaft 2 is installed on the outer handle. The distance between the inner handle and the outer handle is adaptively adjusted through the elastic unit 3 to ensure that both ends of the overall square steel shaft can be effectively installed on the corresponding handles, and the first square steel shaft 1 and the second square steel shaft 2 can rotate synchronously.

[0032] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. Retractable square steel shaft structure for locks, characterized in that: Comprising A first square steel shaft, with an axially arranged installation cavity opened at one end thereof; A second square steel shaft, which is movably arranged at the installation cavity; And An elastic unit, which is arranged in the installation cavity and is used to provide an elastic force for the second square steel shaft.

2. The retractable square steel shaft structure for a lock according to claim 1, characterized in that: The shape of the installation cavity is square, and the shape of the part of the second square steel shaft located in the installation cavity is square.

3. The retractable square steel shaft structure for a lock according to claim 1 or 2, characterized in that: The second square steel shaft includes a main body part arranged in the installation cavity and a head part arranged at one end of the main body part.

4. The retractable square steel shaft structure for a lock according to claim 3, wherein: The shape and size of the head part are adapted to the shape and size of the first square steel shaft.

5. The retractable square steel shaft structure for a lock according to claim 1, characterized in that: One end of the elastic unit abuts against the inner end wall of the installation cavity, and the other end abuts against the inner end of the second square steel shaft.

6. The retractable square steel shaft structure for a lock according to claim 1, characterized in that: A flange is provided on the outer wall of the second square steel shaft. The elastic unit is sleeved on the inner end of the second square steel shaft, and one end thereof abuts against the inner end wall of the installation cavity, and the other end abuts against the flange.

7. The retractable square steel shaft structure for a lock according to claim 1 or 5 or 6, characterized in that: The elastic unit is a spring.

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