WO2020199357A1

WO2020199357A1 - Lock

Info

Publication number: WO2020199357A1
Application number: PCT/CN2019/091479
Authority: WO
Inventors: 章超
Original assignee: 温州市通用锁具有限公司
Priority date: 2019-04-02
Filing date: 2019-06-17
Publication date: 2020-10-08
Also published as: CN109972930B; CN109972930A

Abstract

A lock, comprising a lock body (1), a lock head (2), a lock head housing (3) sleeving the lock head (2) and fixed with the lock head (2), a lock housing (4), and a protective cover (6) sleeving the lock head housing (3), wherein the protective cover (6) is provided with an opening end (61) for inserting in a lock body connecting part (11), and a clamping part (62) communicating with the opening port (61) and locking the lock body connecting part (11). After the lock body connecting part (11) is inserted in the opening port (61), the protective cover (6) is rotated to clamp the lock body connecting part (11) in the clamping part (62); the protective cover (6) is fixed with the lock head housing (3); an outer cover (7) for shielding fixed positions of the protective cover (6) and the lock head housing (3) sleeves the protective cover (6), and the outer cover (7) is provided with a through hole for inserting in the lock body connecting part (11).

Description

A kind of lock

Technical field

The invention belongs to the technical field of locks, and in particular relates to a chain lock.

Background technique

At present, chain locks on the market generally have one end fixed to the lock, and the other end is clamped to the lock. The lock is controlled by a key to open. Due to the high precision of the current lock core, it is extremely difficult to open through technology. Some non-professionals are trying The purpose of unlocking the lock is achieved by simply destroying the lock. At present, the method of illegally unlocking the lock on the market is mainly to destroy the protective cover. After the protective cover is destroyed, it can be moved arbitrarily, so that the fixed end of the chain can be directly pulled out to achieve illegal unlock Therefore, it is urgent to develop a lock with good safety.

Summary of the invention

The technical problem to be solved by the present invention is to provide a lock to prevent the fixed end of the lock body from being accidentally taken out.

The present invention is realized through the following technical solutions:

A lock includes a lock body, a lock head, a lock shell sleeved and fixed with the lock head, and a lock shell. One end of the lock body is fixed on the lock, and the other end is locked on the lock and passes through The key controls the opening and closing, and also includes a protective sleeve sleeved on the outside of the lock shell, the protective sleeve is provided with an open port for inserting the lock body connection part; and a locking part of the lock body connection part communicating with the open port After the lock body connection part is inserted into the open port, the protective sleeve is rotated to the lock body connection part to be clamped into the clamping part; the protective sleeve and the lock shell are fixed, and the protective sleeve and the lock shell are sleeved on the outside of the protective sleeve A jacket that is blocked by a fixed position, and the jacket is provided with a through hole for inserting the connecting part of the lock body.

The beneficial effects of the present invention: through the unique design of the protective cover and outer cover, the present invention prevents criminals from being able to prevent the lock from being damaged after the cover covers the fixed position between the protective cover and the lock shell. Damage, increase the difficulty of illegal unlocking and improve the safety performance of the lock.

Description of the drawings

Figure 1 is a schematic structural view of the lock body connecting portion of the present invention at the open port of the protective sleeve;

Figure 2 is a schematic structural view of the lock body connecting portion of the present invention located at the engaging portion of the protective sleeve;

Figure 3 is an exploded view of the entire structure of the lock body of the present invention.

In the picture: 1. Lock body; 2. Lock head; 3. Lock head shell; 4. Lock shell; 5. Key; 6. Protective cover; 7. Cover; 8. Anti-drilling sheet; 9. Turntable; 10. Steel ball Mounting seat; 11. Lock body connection part; 111. Clamping part; 31. Space; 61. Open port; 62. Clamping part.

detailed description

The present invention will be further described below in conjunction with the embodiments.

Example

A lock as shown in Figures 1 to 3, the lock includes a lock body 1, a turntable 9, a steel ball mounting seat 10, a lock head 2, a lock shell 3 sleeved outside the lock head 2 and fixed with the lock head 2 And the lock housing 4, one end of the lock body 1 is fixed on the lock, the other end is locked on the lock, and the key 5 controls the opening and closing. The lock body 1 described in this embodiment is a chain assembly, which is provided in this embodiment It is a chain lock. In this embodiment, the lock housing is made of plastic material, and it also includes a protective sleeve 6 sleeved on the outside of the lock housing 3, and the protective sleeve 6 is provided with an opening for the lock body connecting portion 11 to insert. Port 61; and the engaging portion 62 of the lock body connecting portion communicating with the open port 61, the lock body connecting portion 11 is inserted into the open port 61 and then the protective sleeve 6 is rotated to the lock body connecting portion 11 to snap into the engaging portion 62 ；Fix the protective sleeve 6 with the lock shell 3, when you want to pull out the connection part of the lock body, you need to take out the fixing piece between the protective sleeve and the lock shell, and then rotate the protective sleeve to make the open port 61 of the protective sleeve and the lock The body connecting part 11 can be aligned to remove the lock body connecting part from the protective cover. In this embodiment, a pin is used for fixing, and a cover is sleeved on the outside of the protective cover 6 to shield the fixed position of the protective cover 6 and the lock shell 3 7 (shielding the specific position of the pin), the outer sleeve 7 is provided with a through hole 71 for inserting the lock body connecting portion 11. The jacket 7 is fixed to the protective sleeve 6, and the jacket 7 is arranged between the protective sleeve 6 and the lock housing 4. The outer jacket 7 has a cylindrical structure, and one end is an open structure, and the other end is provided with a key hole for inserting a key, and the periphery of the key hole forms a restricting portion to prevent the lock head from slipping out. In order to prevent the jacket from being deliberately damaged, the jacket 7 is designed to be made of metal. It is preferably made of heat-treated iron material, so that ordinary tools (such as ordinary hacksaws, drills) are prone to severe wear and tear and cannot be damaged when they touch the outer jacket, which further protects the lock. Since the fixed pin between the protective cover and the lock shell is blocked by the cover, the criminals need to destroy the pin between the cover and the protective cover first, and the criminals are not clear about the internal structure of the lock and may not be able to start, thereby increasing the damage to the lock It is difficult to improve the safety performance of the product.

The lock body connecting portion 11 is a cylinder, and a clamping portion 111 is provided on the cylinder, and the clamping portion 111 is locked into the clamping portion 62 and the lock body connecting portion 11 is in a clamping state. In this embodiment, the clamping part is a ring groove.

The outer surface of the lock shell 3 is provided with a space 31 into which the lock body connecting portion 11 is embedded. The space is a concave circular space into which the lock body connecting portion 11 is inserted into the lock for a long time. The depth of the space is at least deeper than the distance from the end of the lock body connecting portion to the clamping portion.

The engaging portion 62 is a through groove whose width is smaller than the diameter of the lock body connecting portion 11 and greater than the diameter or width of the engaging portion 111. The through groove is arranged along the circumferential direction of the protective sleeve. In this embodiment, the through groove The angle between the end and the open port is at least 135 degrees.

In order to further prevent the lock from being damaged externally, an anti-drilling sheet 8 is provided between the end of the lock 2 and the lock housing 3. The setting of the anti-drilling piece makes it impossible for non-producing molecules to use an electric drill to damage the lock cylinder from the keyhole, so as to protect the lock cylinder.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention Simple modifications and replacements by technicians are within the protection scope of the present invention.

Claims

A lock includes a lock body, a lock head, a lock shell sleeved and fixed with the lock head, and a lock shell. One end of the lock body is fixed on the lock, and the other end is locked on the lock and passes through The key-controlled opening and closing is characterized in that it also includes a protective sleeve sleeved on the outside of the lock shell, the protective sleeve is provided with an open port for inserting the lock body connection part; and a lock body connection part communicating with the open port The locking part of the lock body is inserted into the open port and then the protective sleeve is rotated to the lock body connection part to snap into the locking part; the protective sleeve is fixed to the lock shell, and the protective sleeve is sleeved on the outside of the protective sleeve A jacket that is shielded by the fixed position of the lock shell, and the jacket is provided with a through hole for inserting the connecting part of the lock body.
The lock according to claim 1, wherein the outer jacket is fixed to the protective sleeve, and the outer jacket is arranged between the protective sleeve and the lock housing.
The lock according to claim 1, wherein the outer cover has a cylindrical structure, and one end is an open structure, and the other end is provided with a key hole for inserting a key, and the periphery of the key hole is formed to prevent the lock from sliding out Restrictions.
The lock according to claim 1, wherein the outer surface of the lock shell is provided with a space in which the connecting part of the lock body is embedded.
The lock according to claim 1, wherein the lock body connection part is a cylinder, and a clamping part is provided on the cylinder, and the clamping part is clamped into the clamping part to connect to the lock body The part is in the card connection state.
A lock according to claim 5, wherein the engaging portion is a through groove, the width of the through groove is smaller than the diameter of the lock body connecting portion, and larger than the diameter or width of the engaging portion.
The lock according to claim 1, characterized in that an anti-drilling piece is provided between the end of the lock head and the lock head housing.
The lock according to claim 1, wherein the lock body is a chain assembly.
The lock according to claim 1, wherein the outer cover is made of metal material.