CN110607960A

CN110607960A - Fixed door lock

Info

Publication number: CN110607960A
Application number: CN201910986004.4A
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: 2019-12-24

Abstract

The invention relates to a fixed door lock, comprising: the lock body is internally provided with an accommodating cavity with openings at two ends, and a rotation limiting part is arranged in the accommodating cavity; 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 sleeved in the lock core and 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 fixed door 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

Fixed door lock

Technical Field

The invention relates to the field of locks, in particular to a fixed door 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, thereby realizing the opening and closing of the door lock, and the cam lock is easy to loosen and has an automatic opening phenomenon when being used in trains, motor cars and other conditions which can generate vibration due to the simple structure; most of the existing door locks can bear smaller workload.

Disclosure of Invention

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

To achieve the above object, the present invention provides a fixed door lock, comprising:

the lock body is internally provided with an accommodating cavity with openings at two ends, and a rotation limiting part is arranged in the accommodating cavity;

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 sleeved in the lock core and provided with a threaded hole;

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

Preferably, the rotation limiting portion is provided with a first axial groove, a second axial groove, a third axial groove and a fourth axial groove, the first axial groove and the second axial groove are communicated through the first rotation groove, and the third axial groove and the fourth axial groove are communicated through the second rotation groove.

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 outer surface of the threaded part is provided with a limit plane extending along the axial direction of the threaded part.

Preferably, the lock further comprises a locking washer, and the locking washer 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 shaft with the link of spring bolt is provided with connecting portion, connecting portion joint in the through-hole.

Preferably, the bolt is provided with a tooth-shaped flange surface, and the tooth-shaped flange surface is positioned at the contact end of the bolt and the lock tongue.

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

Preferably, the lock further comprises a sealing ring, the sealing ring is sleeved on the lock cylinder, and the outer ring surface abuts against the inner wall of the accommodating cavity.

According to the fixed door 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 rotation limiting part is arranged in the lock body, so that the door lock can bear larger working load; the door lock is stable in structure, and when the door lock is opened and closed, the bolt rotates more stably and accurately; and the sealing performance is good, the internal structure of the door lock can be better protected, and the service life of the door lock is prolonged.

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 illustration of an exploded view of the fixed door lock of the present invention;

FIG. 2 is a schematic view of a fixed door lock configuration of the present invention;

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

figure 4 is a side view of the lock body structure of the present invention;

FIG. 5 is a schematic view of the lock core 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 fixed door lock includes:

the lock comprises a lock body 10, wherein an accommodating cavity 11 with two open ends is arranged in the lock body 10, and a rotation limiting part 13 is arranged in the accommodating cavity 11;

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 sleeved in the lock cylinder 20, and the lock shaft 30 is 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 lock shaft 30 is provided with a pin hole 31, and a lock pin 40 passes through the spiral groove 21 and the pin hole 31 to match the lock cylinder 20 with the lock shaft 30. The locking shaft 30 is sleeved in the lock cylinder 20, a spring 50 is arranged between the inner side of the lock cylinder 20 and the locking shaft 30, 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 to match and connect the lock cylinder 20 and 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 20 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 on the lock shaft 30, at this time, the bolt 70 and the key cylinder 20 are assembled and connected, and then the bolt 70, the lock shaft 30, the key cylinder 20 and the lock body 10 are assembled together to form a door lock.

An external key is matched with a door lock, the key is inserted into the lock cylinder 20 and matched with the lock cylinder, and the door 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, then 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 to be close to the lock pin 40 (namely, the lock pin 40 moves from the first end 212 to the second end 213 in an opposite manner), 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; in the opening and closing state, the lock pin 40 is close to the second end 213, when the door needs to be closed, the key is rotated counterclockwise, so that the lock cylinder 20 rotates 90 degrees counterclockwise, the second end 213 is close to the lock pin 40, the first end 212 is close to the lock pin 40 (that is, the lock pin 40 moves from the second end 213 to the first end 212 relatively), the key is selected counterclockwise continuously, so that the lock cylinder 20 rotates 90 degrees counterclockwise continuously, at this time, the lock cylinder 20 drives the lock shaft 30 to rotate 90 degrees counterclockwise through the lock pin 40, and further drives the lock tongue 70 to rotate 90 degrees counterclockwise, so that the door lock in the opening and closing state is changed into the closing state.

In a closed state, the lock pin 40 is clamped at the first end 212, and at this time, if the door lock sends a violent shock, the lock pin 40 may be driven to move to the second end 213, but due to the arrangement of the protrusion 211, the lock pin 40 can be effectively prevented from moving to the second end 213, so that the lock tongue 70 is prevented from rotating counterclockwise due to the shock, and the door lock is prevented from being automatically opened; accordingly, in the open-close state, the lock pin 40 is locked at the second end 213, if the door lock sends a violent shock, the lock pin 40 may be driven to move to the first end 212, and the protrusion 211 is also arranged to effectively prevent the lock pin 40 from moving to the first end 212, so as to prevent the door lock from being automatically closed.

The rotation limiting portion 13 is used for limiting a rotation angle of the lock pin 40, so that the door lock can rotate by a proper angle when being opened or closed, and the opening and closing are facilitated.

Further, the rotation restricting portion 13 is provided with a first axial groove 131, a second axial groove 132, a third axial groove 133, and a fourth axial groove 134, the first axial groove 131 and the second axial groove 132 are communicated through a first rotation groove 135, and the third axial groove 133 and the fourth axial groove 134 are communicated through a second rotation groove 136.

The lock cylinder 20 has a face plate 12 at one end, and specifically, the first rotary groove 135 communicates the first axial groove 131 with the second axial groove 132 at an end away from the face plate 12, and the second rotary groove 136 communicates the third axial groove 133 with the fourth axial groove 134 at an end away from the face plate 12. The lock pin 40 moves back and forth between the first axial groove 131, the first rotating groove 135 and the second axial groove 132 at one end and moves back and forth between the third axial groove 133, the second rotating groove 136 and the fourth axial groove 134 at the other end, and referring to the above, when the door lock is closed or opened, the lock cylinder 20 is rotated ninety degrees, the lock pin 40 is displaced in the above axial groove, the lock cylinder 20 is further rotated, the lock pin 40 moves in the above rotating groove, the rotating angle of the lock pin 40 is limited by the first rotating groove 135 and the second rotating groove 136, and further the rotating angle of the lock tongue 70 is limited, so that the door lock can be opened or closed at a proper angle, and the opening and closing are convenient. In the prior art, most of the limitation on the rotation angle of the locking bolt 70 is to provide a projection on the lock shaft 30 and a limiting groove on the lock body 10, and then limit the rotation angle by the cooperation of the projection and the projection, and the matching form of the limiting groove and the projection is mainly for a door lock with a short stroke and a small requirement on a bearable working load, but in the technical scheme, the lock body 10 directly limits the lock pin 40 by the cooperation of the lock pin 40 and the lock body 10, and the lock can be applied to the conditions of a long stroke and a large requirement on a bearable working load.

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. When the door lock is installed on the door panel, the door panel is arranged between the panel part 12 and the locking nut 90, and the locking nut 90 is screwed to be tightly contacted 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 outer surface of the threaded portion 14 is provided with a limit plane 141 extending along the axial direction thereof. In this embodiment, four limiting planes 141 are uniformly distributed and annularly arranged on the threaded portion 14. At present, most of openings formed in the door panel are rectangular, so that the limiting plane 141 matched with the opening of the door panel is arranged on the outer surface of the threaded part 14, the connection between the door lock and the door panel is more stable, and the lock core 20 is prevented from rotating relative to the door panel.

Further, the lock further comprises a lock washer 100, and the lock washer 100 is sleeved on the lock body 10. The anti-loose washer 100 is arranged between the door plate and the locking nut 90, so that the door lock and the door plate 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 100, so that the lock nut 90 is not easy to loosen. Preferably, the lock washer 100 is an internal tooth lock washer, and by pressing the lock nut 90 to retract toward the door panel when being screwed, the teeth on the lock washer 100 are engaged with the door panel, thereby effectively preventing slipping.

Further, the lock cylinder 20 is further provided with a sealing groove 23, and an O-ring 110 is arranged in the sealing groove 23. The O-shaped ring 110 can increase the sealing performance of the structure, and can play a certain waterproof role, so that the service life of the door lock is prolonged.

Further, the lock shaft 30 is provided with a connecting portion 33 at a connecting end with the latch bolt 70, and the connecting portion 33 is clamped in the through hole 71. In this embodiment, the through hole 71 is a rectangular through hole, so the connecting portion 33 is correspondingly set to be rectangular, the connecting portion 33 is clamped to 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 33 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, and the toothed flange surface 81 is located at a contact end of the bolt 80 and the lock tongue 70. When the bolt 80 passes through the through hole 71 to be connected with the threaded hole 32 on the lock shaft 30, the toothed flange surface 81 is in contact with the lock tongue 70, the friction between the toothed flange surface 81 and the lock tongue 70 can be increased, and when the lock shaft 30 drives the bolt 80 to rotate, the bolt 80 can drive the lock tongue 70 to rotate, so that when the door lock is opened and closed, the rotation of the lock cylinder 20 is more stably transmitted to the lock tongue 70, and the door lock can be better used.

Further, the lock further comprises a rubber ring 120, and the rubber ring 120 is sleeved on the lock body 10. The rubber ring 120 is specifically arranged on the inner side of the panel part 12, when the door lock is installed on the door panel, the rubber ring 120 is located between the panel part 12 and the door panel, and the rubber ring 120 is tightly abutted to the lock body 10 and the door panel to increase the sealing performance of the door lock, so that the moisture in the air is prevented from contacting with the internal parts of the door lock, and the service life of the door lock is shortened.

Further, the lock cylinder further comprises a sealing ring 130, wherein the sealing ring 130 is sleeved on the lock cylinder 20, and the outer annular surface abuts against the inner wall of the accommodating cavity 11. The lock core 20 is arranged in the accommodating cavity 11, a gap is left between the lock core 20 and the inner wall of the accommodating cavity 11 at one end far away from the panel part 12, the seal ring 130 is sleeved on the lock core 20, and the outer annular surface of the seal ring 130 is abutted against the inner wall of the accommodating cavity 11, so that the gap is filled, the sealing performance of the door lock is improved, the moisture in the air is prevented from contacting with parts inside the door lock, and the service life of the door lock is shortened.

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 fixed door lock, comprising:

the lock shaft is sleeved in the lock core and provided with a threaded hole;

2. A fixed door lock according to claim 1, wherein: the rotation limiting portion is provided with a first axial groove, a second axial groove, a third axial groove and a fourth axial groove, the first axial groove is communicated with the second axial groove through the first rotating groove, and the third axial groove is communicated with the fourth axial groove through the second rotating groove.

3. A fixed door 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.

4. A fixed door lock according to claim 3, wherein: the outer surface of the threaded part is provided with a limiting plane extending along the axis direction of the threaded part.

5. A fixed door lock according to claim 3, wherein: the lock body is characterized by further comprising a locking washer sleeved on the lock body.

6. A fixed door 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.

7. The adjustable door lock of claim 1, wherein: the lock shaft with the link of spring bolt is provided with connecting portion, connecting portion joint in the through-hole.

8. A fixed door lock according to claim 1, wherein: the bolt is provided with a tooth-shaped flange surface, and the tooth-shaped flange surface is positioned at the contact end of the bolt and the lock tongue.

9. A fixed door 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.

10. A fixed door lock according to claim 1, wherein: the lock core is sleeved with the lock core, and the outer ring surface of the lock core is abutted against the inner wall of the accommodating cavity.