Square shaft with good safety

Abstract

The utility model discloses a square shaft with good safety, which comprises a shaft body, one end of the shaft body is connected with a connector through a connecting structure, the connecting structure comprises a connecting hole arranged on one end face of the shaft body and an I-shaped head fixedly connected to one end of the connector, and the I-shaped head is in running fit with the connecting hole; one end of the connector is connected with an end head through a detachable part; the detachable part comprises a stud fixedly connected to one end of the end head and a threaded hole formed in the inner wall of one end of the connector, and the stud is matched with the threaded hole. The circumferential edge of the outer side face of the end is in an arc shape. A cylindrical cavity is formed in the inner wall of the shaft body; and the inner wall of the cylindrical cavity is connected with a T-shaped convex column in a sliding manner. According to the square shaft, the situation that the shaft body rotates by clamping the connector or the end with the help of tools and the like can be effectively avoided, the situation that other people use the square shaft to achieve the unlocking effect can be effectively prevented, and therefore safety protection of a lock is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of locks, in particular to a square shaft with good safety. Background Art

[0002] When the lock is in use, the outer drive shaft of the main lock tongue is connected to the mechanism that drives the main lock tongue to unlock and lock. The handle is connected to the outer drive shaft of the main lock tongue through the square shaft and drives the outer drive shaft of the main lock tongue to rotate, so as to achieve the purpose of reverse lifting to lock or downward pressing to unlock or free idling.

[0003] At present, the conventional square shafts on the market are solid square shafts with equal cross-sections, which are mainly used to connect the front and rear panel handles and rotate the lock body to drive out or retract the lock column. They can transmit considerable torque, so in the normal use of the lock, the square shaft is rarely damaged. However, this also provides criminals with the opportunity to use improper means to unlock the door. It is very likely that after forcibly destroying and removing the outer panel of the door, they will use pliers or other tools to clamp the square shaft, thereby achieving the purpose of illegal unlocking. Based on this, we propose a square shaft with good security, which can effectively prevent others from using the square shaft to achieve the effect of unlocking. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and provides a square shaft with good safety.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A square shaft with good safety comprises a shaft body, one end of the shaft body is connected to a connector via a connecting structure, the connecting structure comprises a connecting hole arranged on one end surface of the shaft body, an I-shaped head fixedly connected to one end of the connector, and the I-shaped head and the connecting hole form a rotational fit;

[0007] One end of the connector is connected to a terminal via a detachable component.

[0008] As a further solution of the utility model: the detachable component includes a stud fixedly connected to one end of the terminal, and a threaded hole arranged on the inner wall of one end of the connecting head, and the stud is adapted to the threaded hole.

[0009] As a further solution of the utility model: the peripheral edge of the outer side surface of the end head is in an arc shape.

[0010] As a further solution of the utility model: the inner wall of the shaft body is provided with a cylindrical cavity.

[0011] As a further solution of the utility model: the inner wall of the cylindrical cavity is slidably connected with a T-shaped protrusion, and one end of the protrusion forms a front-to-back sliding fit with a side surface of the shaft body.

[0012] As a further solution of the utility model: the convex column and the corresponding side surface of the cylindrical cavity are fixedly connected with the same spring.

[0013] As a further solution of the utility model: a ring-shaped gasket is arranged on one side of the end.

[0014] As a further solution of the utility model: an adhesive layer is provided on one side of the gasket.

[0015] Compared with the prior art, the utility model provides a square shaft with good safety, which has the following beneficial effects:

[0016] 1. The square shaft with good safety is provided with a connecting head and a shaft body connected as a whole via a connecting structure. Since the connecting head is rotatably connected with the end of the shaft body, it can effectively prevent others from rotating the shaft body by clamping the connecting head or the end with the help of tools, etc., and can effectively prevent others from using the square shaft to achieve the effect of unlocking, thereby improving the safety protection of the lock.

[0017] 2. The square shaft with good safety is made by holding the outer wall of the connector with one hand and the end with the other hand, adjusting the stud to align with the threaded hole and slowly screwing it in through the thread, so that the end and the connector form a detachable fixed connection relationship, which is convenient for disassembly and assembly, and the arc-shaped end with the peripheral edge of the outer side surface can effectively improve the safety protection, and is not conducive to people clamping the end from the outside with the help of tools.

[0018] 3. When installing the assembled square shaft with good safety on the lock, press the boss downward by hand to make it flush with the end and one side of the shaft body, and then insert the square shaft from the tail into the corresponding position of the lock until one side of the end fits with the surface of the lock. At this time, the boss is no longer suppressed after being away from the corresponding through hole of the lock, so it will be reset under the support of the spring and extend out of the surface of the shaft body, thereby playing a positioning role in the installation between the square shaft and the lock. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of Example 1 of a square shaft with good safety proposed by the utility model;

[0020] Figure 2 This is a schematic diagram of the exploded structure of the shaft body, the connector and the end of the square shaft of the utility model with good safety.

[0021] Figure 3 This is a schematic diagram of the connector structure of Example 1 of a square shaft with good safety proposed by the utility model;

[0022] Figure 4 This is a schematic diagram of a partial cross-sectional structure of a shaft body of Embodiment 1 of a square shaft with good safety proposed by the utility model;

[0023] Figure 5 This is a structural schematic diagram of Example 2 of a square shaft with good safety proposed by the utility model.

[0024] In the figure: 1 shaft body, 101 connecting hole, 2 end head, 201 stud, 3 connecting head, 301 threaded hole, 302 I-head, 4 boss, 401 spring, 5 cylindrical cavity, 6 gasket, 601 adhesive layer. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0027] Example 1

[0028] A square shaft with good safety, such as Figure 1-3 As shown, it includes a shaft body 1, one end of which is connected to a connector 3 through a connecting structure, the connecting structure including a connecting hole 101 opened on one end face of the shaft body 1, an I-head 302 fixedly connected to one end of the connector 3, and the I-head 302 forms a rotational fit with the connecting hole 101; the connector 3 is installed in the connecting hole 101 at one end of the shaft body 1 through the I-head 302, so that the connector 3 can form a rotational connection with the end of the shaft body 1, which can effectively prevent others from rotating the shaft body 1 by clamping the connector 3 with the help of tools, etc., and can effectively prevent others from using the square shaft to achieve the effect of unlocking, thereby improving the safety protection of the lock.

[0029] Furthermore, one end of the connector 3 is connected to the terminal 2 via a detachable component, and the detachable component includes a stud 201 fixedly connected to one end of the terminal 2 and a threaded hole 301 opened on the inner wall of one end of the connector 3, and the stud 201 is adapted to the threaded hole 301 so that the two form a threaded connection; hold the outer wall of the connector 3 with one hand and the terminal 2 with the other hand, adjust the stud 201 to align with the threaded hole 301 and slowly screw it in through the thread, so that the terminal 2 and the connector 3 form a detachable fixed connection relationship, which is convenient for disassembly and assembly.

[0030] Preferably, the peripheral edge of the outer side surface of the end cap 2 is in an arc shape, which effectively improves the safety protection and makes it difficult for people to clamp the end cap 2 from the outside with the help of tools.

[0031] like Figure 1 and Figure 4 As shown, the inner wall of the shaft body 1 is provided with a cylindrical cavity 5, the inner wall of the cylindrical cavity 5 is slidably connected with a T-shaped protrusion 4, and the same spring 401 is welded to the corresponding side of the protrusion 4 and the cylindrical cavity 5;

[0032] Preferably, one end of the boss 4 forms a front-to-rear sliding fit with a side surface of the shaft body 1; when installing the assembled square shaft on the lock, press the boss 4 downward by hand to make it flush with the end and the side surface of the shaft body 1, and then insert the square shaft from the tail into the corresponding position of the lock until one side surface of the end head 2 fits with the surface of the lock. At this time, the boss 4 is no longer suppressed after it is away from the corresponding through hole of the lock, so it will be reset under the support of the spring 401 and extend out of the surface of the shaft body 1, thereby playing a positioning role in the installation between the square shaft and the lock.

[0033] Working principle: During assembly, the connector 3 is installed into the connecting hole 101 at one end of the shaft body 1 through the I-shaped head 302, so that the connector 3 can form a rotational connection with the end of the shaft body 1. Hold the outer wall of the connector 3 with one hand and the terminal 2 with the other hand, adjust the stud 201 to align with the threaded hole 301 and slowly screw it in through the thread, so that the terminal 2 and the connector 3 form a detachable fixed connection relationship. When installing the assembled square shaft on the lock, press the boss 4 downward by hand to make it flush with the end and one side of the shaft body 1, and then insert the square shaft from the tail into the corresponding position of the lock until one side of the terminal 2 fits with the surface of the lock. At this time, the boss 4 is no longer suppressed after being away from the corresponding through hole of the lock, so it will be reset under the support of the spring 401 and extend out of the surface of the shaft body 1, so as to play a positioning role in the installation between the square shaft and the lock.

[0034] Example 2

[0035] A square shaft with good safety, such as Figure 5 As shown, in order to provide another end head 2 structure, this embodiment makes the following improvements on the basis of embodiment 1: a ring-shaped gasket 6 is bonded to the side of the end head 2 facing the shaft body 1;

[0036] Preferably, an adhesive layer 601 is provided on one side of the gasket 6; the gasket 6 is bonded to the side surface of the end head 2 facing the shaft body 1. When the square shaft is installed on the lock, the other side of the gasket 6 will fit firmly onto the surface of the lock, thereby protecting the surface of the lock from being worn by the end head 2 and preventing a gap from forming between the end head 2 and the surface of the lock, thereby further improving safety protection.

[0037] The utility model can be used on locks with square shafts such as smart door locks, smart locks, window locks, etc.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A square shaft with good safety, comprising a shaft body (1), characterized in that: One end of the shaft body (1) is connected to a connector (3) via a connecting structure, the connecting structure comprising a connecting hole (101) provided on one end surface of the shaft body (1), an I-shaped head (302) fixedly connected to one end of the connector (3), and the I-shaped head (302) and the connecting hole (101) form a rotational fit; One end of the connector (3) is connected to the terminal (2) via a detachable component.

2. A square shaft with good safety according to claim 1, characterized in that: The detachable component comprises a stud (201) fixedly connected to one end of the end head (2) and a threaded hole (301) arranged on the inner wall of one end of the connecting head (3), and the stud (201) is matched with the threaded hole (301).

3. A square shaft with good safety according to claim 2, characterized in that: The outer side circumference edge of the end head (2) is in an arc shape.

4. A square shaft with good safety according to claim 3, characterized in that: The inner wall of the shaft body (1) is provided with a cylindrical cavity (5).

5. A square shaft with good safety according to claim 4, characterized in that: A T-shaped convex column (4) is slidably connected to the inner wall of the cylindrical cavity (5), and one end of the convex column (4) forms a front-to-back sliding fit with a side surface of the shaft body (1).

6. A square shaft with good safety according to claim 5, characterized in that: The convex column (4) and the corresponding side surface of the cylindrical cavity (5) are fixedly connected with a same spring (401).

7. A square shaft with good safety according to claim 1, characterized in that: A ring-shaped gasket (6) is provided on one side of the end head (2).

8. A square shaft with good safety according to claim 7, characterized in that: An adhesive layer (601) is provided on one side of the gasket (6).

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