CN110616965A

CN110616965A - Cam lock

Info

Publication number: CN110616965A
Application number: CN201910985951.1A
Authority: CN
Inventors: 朱士宏; 吕文强; 张银富
Original assignee: Guangzhou Jinhong Technology Co Ltd
Current assignee: Guangzhou Jinhong Technology Co Ltd
Priority date: 2019-10-17
Filing date: 2019-10-17
Publication date: 2019-12-27

Abstract

The invention relates to a cam lock, comprising: the lock body is internally provided with an accommodating cavity with two open ends; the lock cylinder is arranged in the accommodating cavity and provided with a spiral groove, and the spiral groove is provided with a boss; the lock shaft is provided with a pin hole, the lock shaft is sleeved in the lock cylinder, a lock pin penetrates through the spiral groove and the pin hole to connect the lock cylinder and the lock shaft in a matching manner, and the lock shaft is also provided with a threaded hole; the bolt passes the through hole and is connected with the threaded hole on the lock shaft. According to the cam lock, the rotating groove is formed in the lock cylinder, and the protruding portion is arranged on the rotating groove, so that the phenomenon that the door lock is automatically opened due to vibration after being closed can be effectively avoided.

Description

Cam lock

Technical Field

The invention relates to the field of locks, in particular to a cam lock.

Background

A cam lock, or cam lock, is a lock which controls the lock to rotate a lock pin through an internal structure, and is divided into a plum blossom spring lock, a triangle cam lock, a double-sided spring lock according to the difference of the lock pin structure. The operating principle of the cam lock is that the key rotates to drive the lock core and the lock shaft to rotate so as to drive the lock tongue to rotate, so that the door lock is opened and closed.

Disclosure of Invention

The invention aims to provide a cam lock which can effectively avoid the phenomenon that a door lock is automatically opened due to vibration after being closed.

To achieve the above object, the present invention provides a cam lock, including:

the lock body is internally provided with an accommodating cavity with two open ends;

the lock cylinder is arranged in the accommodating cavity and provided with a spiral groove, and the spiral groove is provided with a boss;

the lock shaft is provided with a pin hole, the lock shaft is sleeved in the lock cylinder, a lock pin penetrates through the spiral groove and the pin hole to connect the lock cylinder and the lock shaft in a matching manner, and the lock shaft is also provided with a threaded hole;

the bolt passes the through hole and is connected with the threaded hole on the lock shaft.

Preferably, the lock shaft outer surface is provided with a projection, the lock cylinder is provided with a clamping groove, the lock body inner side is provided with a limiting groove, and the projection is arranged on the clamping groove and the limiting groove.

Preferably, the lock shaft is provided with a connecting part at one end far away from the pin hole, and the connecting part is clamped in the through hole.

Preferably, the bolt is provided with a toothed flange surface on an end surface of a head portion of the bolt on a side close to the screw.

Preferably, the outer wall of the lock body is provided with a threaded part, and the threaded part is in threaded connection with the locking nut.

Preferably, the lock further comprises a rubber ring, and the rubber ring is sleeved on the lock body.

Preferably, the lock core is further provided with a sealing groove, and an O-shaped ring is arranged in the sealing groove.

Preferably, the lock further comprises a locking washer, and the locking washer is sleeved on the lock body.

Preferably, the lock washer is an internal tooth washer.

According to the cam lock, the rotating groove is formed in the lock cylinder, and the protruding part is arranged on the rotating groove, so that the phenomenon that the door lock is automatically opened due to vibration after being closed can be effectively avoided; the lug can drive the lock shaft and the lock cylinder to rotate and can also limit the rotation of the lock shaft; the through hole is matched with the lock shaft, so that the rotation can be stably transmitted; the arrangement of the toothed flange surface can increase the friction force between the toothed flange surface and the lock tongue, so that the door lock is more stable to open and close; the rubber ring, the O-shaped ring and the anti-loosening gasket can improve the sealing performance and stability of the door lock structure.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic diagram of an exploded view of a cam lock according to the present invention;

FIG. 2 is a schematic view of the cam lock of the present invention;

FIG. 3 is a schematic view of the lock body structure of the present invention;

FIG. 4 is a schematic view of the lock core structure of the present invention;

FIG. 5 is a schematic view of the lock shaft configuration of the present invention;

fig. 6 is a schematic view of the bolt and bolt structure of the present invention.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

In an embodiment of the present invention, as shown in fig. 1 to 6, a cam lock includes:

the lock comprises a lock body 10, wherein an accommodating cavity 11 with two open ends is formed in the lock body 10;

the lock cylinder 20 is arranged in the accommodating cavity 11, the lock cylinder 20 is provided with a spiral groove 21, and the spiral groove 21 is provided with a convex part 211;

the lock shaft 30 is provided with a pin hole 31, the lock shaft 30 is sleeved in the lock cylinder 20, a lock pin 40 penetrates through the spiral groove 21 and the pin hole 31 to connect the lock cylinder 20 and the lock shaft 30 in a matching way, and the lock shaft 30 is further provided with a threaded hole 32;

the bolt 70 is provided with a through hole 71, and a bolt 80 passes through the through hole 71 to be connected with the threaded hole 32 on the lock shaft 30.

In this embodiment, the locking shaft 30 is sleeved in the lock cylinder 20, a spring 50 is disposed between the inner side of the lock cylinder 20 and the locking shaft 30, and the lock pin 40 passes through the spiral groove 21 on the lock cylinder 20 and the pin hole 31 on the locking shaft 30, so that the lock cylinder 20 and the locking shaft 30 are assembled together; the lock core 20 is arranged in the accommodating cavity 11 of the lock body 10, the lock core 10 is provided with a clamp spring groove 22, a clamp spring 60 is clamped in the clamp spring groove 22 on the lock core 20, and the lock core 20 and the lock body 10 are clamped and fixed, so that the lock body 10 is assembled with the lock core 20; the bolt 80 passes through the through hole 71 to be connected with the threaded hole 32 of the lock pin 40, so that the latch bolt 70 and the lock cylinder 20 are assembled and connected. An external key is matched with a cam lock, the key is inserted into the lock cylinder 20 and matched with the lock cylinder, and the lock is in a closed state, at this time, a first end 212 of the spiral groove 21 is close to the lock pin 40, the key is rotated clockwise, so that the lock cylinder 20 rotates clockwise by 90 degrees, the first end 212 is close to the lock pin 40, a second end 213 of the spiral groove 21 is changed into close to the lock pin 40 (namely, the lock pin 40 moves from the first end 212 to the second end 213 oppositely), the key is rotated clockwise continuously, so that the lock cylinder 20 rotates clockwise by 90 degrees, at this time, the lock cylinder 20 drives the lock shaft 30 to rotate clockwise by 90 degrees through the lock pin 40, and further drives the lock tongue 70 to rotate clockwise by 90 degrees, so that the door lock in the closed state is changed into; when the door needs to be closed, the key is rotated anticlockwise, so that the lock cylinder 20 is rotated anticlockwise, the lock pin 40 drives the lock shaft 30 to rotate anticlockwise, and the lock tongue 70 is further driven to rotate anticlockwise, and the door lock is closed. In the open-close state, the lock shaft 30 is in the extended state due to the elastic force of the spring 50, and the lock pin 40 is located at the second end 213 of the spiral groove 21; in the closed state, the lock pin 40 is clamped at the first end 212 of the spiral groove 21, and even though the lock pin 40 may be driven to move to the second end 213 due to vibration, the protrusion 211 is provided, so that the lock pin 40 can be effectively prevented from moving to the second end 213, and the phenomenon that the lock tongue 70 rotates counterclockwise due to vibration to cause the door lock to open automatically is avoided.

Further, a protrusion 33 is disposed on an outer surface of the lock shaft 30, the lock cylinder 20 is provided with a locking groove 23, a limiting groove 121 is disposed on an inner side of the lock body 10, and the protrusion 33 is disposed on the locking groove 23 and the limiting groove 121.

Specifically, an opening at one end of the lock body 10 is provided with a bottom wall 12 communicated with the accommodating cavity 11, and the limiting groove 121 is specifically arranged on the bottom wall 12. The projection 33 is arranged on the outer surface of the lock shaft 30 and is arranged on the clamping groove 23, and the lock cylinder 20 can be driven to rotate by the projection 33 in addition to the lock pin 40 driving the lock shaft 30 to rotate; the projection 33 is further disposed in the limiting groove 121 of the lock body 10, the lock cylinder 20 and the lock shaft 30 rotate to drive the projection 33 to rotate in the limiting groove 121, the limiting groove 121 limits the projection 33, and further limits the rotation angle of the lock shaft 30, so as to limit the rotation angle of the lock tongue 70, so that the door lock can be opened or closed by a proper angle, and is convenient to open, close and close.

Further, the locking shaft 30 is provided with a connecting portion 34 at an end away from the pin hole 31, and the connecting portion 34 is clamped in the through hole 71. In this embodiment, the through hole 71 is a rectangular through hole, so the connecting portion 34 is correspondingly rectangular, the connecting portion 34 is clamped in the through hole 71, the latch bolt 70 can be smoothly driven to rotate when the lock shaft 30 rotates, and the matching between the connecting portion 34 and the through hole 71 can increase the compactness of the structure, so that the rotation of the lock shaft 30 is stably transmitted to the latch bolt 70.

Further, the bolt 80 is provided with a toothed flange surface 81 on an end surface of a head portion thereof on a side close to the screw. When the bolt 80 passes through the through hole 71 of the bolt 70 and is connected with the threaded hole 32 on the lock shaft 30, the tooth-shaped flange surface 81 is contacted with the bolt 70, the friction between the tooth-shaped flange surface 81 and the bolt 70 can be increased, and when the lock shaft 30 drives the bolt 80 to rotate, the bolt 80 can also drive the bolt 70 to rotate, so that when the door lock is opened and closed, the rotation of the lock core 20 is more stably transmitted to the bolt 70, and the rotating bolt lock can be better used.

Further, the outer wall of the lock body 10 is provided with a threaded portion 14, and the threaded portion 14 is in threaded connection with the lock nut 90. Specifically, a panel portion 13 is disposed at an opening at the other end of the lock body 10, when the door lock is installed on a door panel, the door panel is disposed between the panel portion 13 and the lock nut 90, and the lock nut 90 is screwed to be in close contact with the door panel, so that the door panel is fixedly connected with the door lock. The threaded portion 14 and the lock nut 90 are provided, so that the installation is facilitated.

Further, the lock further comprises a rubber ring 100, and the rubber ring 100 is sleeved on the lock body 10. The rubber ring 100 is specifically arranged on the inner side of the panel part 13, when the door lock is installed on the door panel, the rubber ring 100 is located between the panel part 13 and the door panel, the rubber ring 100 is tightly abutted with the lock body 10 and the door panel, the sealing performance of the door lock is improved, the moisture of the air is prevented from contacting with the internal parts of the door lock, and therefore the service life of the door lock is shortened.

Further, the lock cylinder 20 is further provided with a sealing groove 24, and an O-ring 110 is arranged in the sealing groove 24. The arrangement of the O-shaped ring 110 can increase the sealing performance of the structure, and can also play a certain waterproof role, so that the service life is prolonged.

Further, a lock washer 120 is further included, and the lock washer 120 is sleeved on the lock body 10. The anti-loose washer 120 is arranged between the door panel and the locking nut 90, so that the door lock and the door panel are more firmly fixed; the lock nut 90 can also provide pre-tightening force when the lock nut 90 is tightened by using the lock washer 120, so that the lock nut 90 is not easy to loosen.

Further, the lock washer 120 is an internal tooth washer. Preferably, the lock washer 120 is an internal tooth washer, and the lock washer 120 can be pressed to retract toward the door panel when the lock nut 90 is tightened, so that the teeth on the internal tooth washer are engaged with the door panel, thereby effectively preventing slipping.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A twist-bolt lock, comprising:

2. A twist-bolt lock according to claim 1, wherein: the lock comprises a lock body and is characterized in that a convex block is arranged on the outer surface of the lock shaft, a clamping groove is formed in the lock core, a limiting groove is formed in the inner side of the lock body, and the convex block is arranged on the clamping groove and the limiting groove.

3. A twist-bolt lock according to claim 1, wherein: the lock shaft is provided with a connecting part at one end far away from the pin hole, and the connecting part is clamped in the through hole.

4. A twist-bolt lock according to claim 1, wherein: and a tooth-shaped flange surface is arranged on the end surface of the bolt on one side of the head part close to the screw rod.

5. A twist-bolt lock according to claim 1, wherein: the lock body outer wall is provided with screw thread portion, screw thread portion and lock nut threaded connection.

6. A twist-bolt lock according to claim 1, wherein: the lock body is characterized by further comprising a rubber ring, and the rubber ring is sleeved on the lock body.

7. A twist-bolt lock according to claim 1, wherein: the lock core is also provided with a sealing groove, and an O-shaped ring is arranged in the sealing groove.

8. A twist-bolt lock according to claim 1, wherein: the lock body is characterized by further comprising a locking washer sleeved on the lock body.

9. A cam lock according to claim 5, wherein: the anti-loose washer is an internal tooth washer.