CN221856459U - Self-fixing lock - Google Patents

Abstract

The utility model relates to the technical field of locks, in particular to a self-fixing lock, which comprises a lock sleeve, a lock cylinder and a lock tongue, wherein the lock sleeve is respectively provided with a lock cylinder jack and a lock tongue jack, the lock cylinder and the lock tongue are respectively inserted into the lock cylinder jack and the lock tongue jack, the bottom end of the lock tongue is provided with a spring, the spring is abutted against the bottom of the lock tongue jack, the lock tongue is provided with a clamping groove, one end of the lock cylinder is provided with a lock column, the lock column is clamped in the clamping groove, the section of the clamping groove comprises a groove top, a groove wall and a groove bottom, the section of the lock column is of an elliptic-like structure, and the section of the lock column comprises a first plane, a second plane, a first cambered surface, a second cambered surface and a third cambered surface which are connected end to end. The lock is simple in integral structure, practical and reliable, and the lock tongue can still keep a locking state under the condition of stress or vibration by the action of the blades, the lock columns and the clamping grooves, and a gap is reserved between the lock columns and the clamping grooves, so that the buffer effect is achieved, and the service life of the lock is effectively prolonged.

Description

Self-fixing lock

Technical Field

The utility model relates to the technical field of locks, in particular to a self-fixing lock.

Background Art

As an important tool involved in all areas of people's lives, locks have completely different structural requirements according to different production requirements. As people's living standards continue to improve, the functional requirements for various locks are also increasing, such as resilience, anti-theft, sensitivity and durability.

In existing locks, when the lock tongue is subjected to external force or vibration, it is very likely to undergo a large displacement, resulting in accidental unlocking, which has an adverse effect on the use effect.

Utility Model Content

In view of the above problems, the utility model provides a self-fixing lock to solve the problem that the lock tongue of the existing lock is prone to slide and unlock when subjected to external force or large vibration.

To achieve the above-mentioned purpose, the utility model provides a self-fixing lock, including a lock sleeve, a lock core and a lock tongue, wherein the lock sleeve is provided with a lock core insertion hole and a lock tongue insertion hole, respectively, the lock core and the lock tongue are inserted into the lock core insertion hole and the lock tongue insertion hole, respectively, a spring is provided at the bottom end of the lock tongue, the spring abuts against the bottom of the lock tongue insertion hole, a clamping groove is provided on the lock tongue, a lock column is provided at one end of the lock sleeve, and the lock column is clamped in the clamping groove;

The cross section of the slot includes a slot top, a slot wall and a slot bottom, the slot top and the slot bottom are arranged horizontally, the two ends of the slot wall are connected to the slot top and the slot bottom respectively, the upper half of the slot wall is arranged vertically to the slot top, and the lower half of the slot wall is arranged obliquely;

The cross-section of the lock column is an elliptical structure, including plane one, plane two, arc surface one, arc surface two and arc surface three connected end to end in sequence. In the locked state, the plane one is horizontally arranged and fits with the bottom of the groove. In the unlocked state, the arc surface three fits with the bottom of the groove and rolls along the bottom of the groove.

Furthermore, the lock core is provided with a plurality of slots, a plurality of blades are inserted into the slots, a limiting portion is provided on one side of the blade, and a micro spring is provided between the limiting portion and the bottom of the slot.

Furthermore, a limiting groove is provided on the side wall of the lock core insertion hole, and the blade is inserted into the limiting groove in the locked state.

Furthermore, a limiting bolt is inserted into the lock sleeve, and the limiting bolt extends into the lock core insertion hole to limit the lock core.

Furthermore, an annular groove is provided at one end of the lock core close to the lock column, and the limiting bolt cooperates with the annular groove.

Furthermore, a spring slot is provided at the bottom end of the lock tongue and the bottom end of the lock tongue insertion hole, and two ends of the spring are respectively inserted into the spring slots in the lock tongue and the lock tongue insertion hole.

Beneficial effects of the utility model:

The utility model has a simple overall structure, is practical and convenient, and by adjusting the structure of the lock tongue and the lock core, the lock has a more stable structure, the lock tongue is less likely to shift, and the locking state is more secure;

The utility model provides a limiting groove in the lock sleeve, and the blade in the lock core is locked in the limiting groove when the key is pulled out. By adjusting the structure of the locking groove provided in the lock tongue and the lock column provided at one end of the lock core, the lock core is fixed under the action of the blade, so that the lock column can effectively lock the position of the lock tongue, so that the lock tongue remains stable.

In the utility model, a gap is left between the lock column and the wall of the card slot, so that when vibration occurs, a buffering space is left between the lock column and the card slot, thereby avoiding excessive rigid collision between the various structures of the lock and effectively extending the service life of the lock.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

Figure 1 is an overall structural diagram of the lock;

FIG2 is an exploded view of the lock;

FIG3 is a cross-sectional view of the lock tongue and the lock cylinder;

FIG4 is a cross-sectional view of the lock sleeve;

Fig. 5 is a diagram showing the internal structure of the lock;

Wherein: 1-lock sleeve, 11-lock core jack, 12-lock tongue jack, 13-limiting groove, 14-spring, 15-limiting bolt, 2-lock core, 21-lock column, 211-plane one, 212-plane two, 213-arc surface one, 214-arc surface two, 215-arc surface three, 22-plate groove, 23-blade, 24-micro spring, 25-annular groove, 3-lock tongue, 31-card groove, 311-slot top, 312-slot wall, 313-slot bottom.

Specific implementation content

The following will be combined with the drawings of the utility model specification to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

In a specific embodiment of the utility model, as shown in Figures 1 and 2, a self-fixing lock comprises a lock sleeve 1, a lock core 2 and a lock tongue 3. The lock sleeve 1 is provided with a lock core insertion hole 11 and a lock tongue insertion hole 12, respectively. The lock core 2 and the lock tongue 3 are respectively inserted in the lock core insertion hole 11 and the lock tongue insertion hole 12, a spring 14 is connected to the bottom end of the lock tongue 3, and the bottom end of the lock tongue 3 and the bottom end of the lock tongue insertion hole 12 are both provided with spring slots, and the two ends of the spring 15 are respectively inserted in the spring slots in the lock tongue 3 and the lock tongue insertion hole 12, a card slot 31 is provided on the lock tongue 3, and a lock column 21 is provided at one end of the lock core 2, and the lock column 21 is carded in the card slot 31.

As shown in Figure 3, the cross-section of the card slot 31 includes a slot top 311, a slot wall 312 and a slot bottom 313. The slot top 311 and the slot bottom 313 are horizontally arranged, and the two ends of the slot wall 312 are respectively connected to the slot top 311 and the slot bottom 313. The upper half of the slot wall 312 is vertically arranged with the slot top 311, and the lower half of the slot wall 312 is inclined.

The cross-section of the lock column 21 is an elliptical structure, including plane one 211, plane two 212, arc surface one 213, arc surface two 214 and arc surface three 215 which are connected end to end in sequence. In the locked state, plane one 211 is horizontally arranged and fits with the groove bottom 313. In the unlocked state, arc surface three 215 fits with the groove bottom 313 and rolls along the groove bottom 313.

The lock core 2 is provided with a plurality of slots 22, in which a plurality of blades 23 are inserted, a limiting portion is provided on one side of the blade 23, and a micro spring 24 is provided between the limiting portion and the bottom of the slot 22; as shown in FIG4 , a limiting slot 13 is provided on the side wall of the lock core insertion hole 11, and the blade 23 is inserted into the limiting slot 13 in the locked state.

As shown in FIG. 5 , a limiting bolt 15 is inserted into the lock sleeve 1 , and extends into the lock core insertion hole 11 . An annular groove 25 is provided at one end of the lock core 2 close to the lock column 21 , and the limiting bolt 15 cooperates with the annular groove 25 .

The use process of this utility model:

The lock is mainly divided into a locked state and an unlocked state. The locked state is when no key is inserted; the unlocked state is when the key is inserted, the lock cylinder 2 is rotated, and the lock tongue 3 is retracted into the lock sleeve 1, or when the key is inserted, the lock tongue 3 is pressed, and the lock tongue 3 is retracted into the lock sleeve 1. The specific conditions for using the utility model are as follows.

When the key is not inserted:

After the key is pulled out, the blade 23 pops out under the action of the micro spring 24 and is stuck in the limiting groove 13, so that the lock core 2 is fixed, and the lock column 21 is stuck in the slot 31, so that the lock tongue 3 is fixed and cannot be displaced over a long distance; in this case, if the lock tongue 3 is subjected to force or a large vibration occurs, a certain gap is left between the groove wall 312 of the slot 31 and the lock column 21, which plays an effective buffering role and prevents the groove wall 312 from violently colliding with the lock column 21 and causing damage to the lock.

With the key inserted:

After the key is inserted, the blade 23 is retracted into the lock core 2. At this time, the lock core 2 can rotate. The turning key drives the lock core 2 to rotate. The arc surface 315 of the lock column 21 rolls along the groove bottom 313 of the slot 31. Under the pressure of the lock column 21, the lock tongue 3 moves downward to unlock. After the key is released, the lock tongue 3 moves upward under the action of the spring 14 and drives the lock core 2 and the key back to the initial position.

After the key is inserted, the blade 23 is retracted into the lock core 2. At this time, the lock core 2 can rotate, pressing the lock tongue 3, and the inclined section of the groove wall 312 contacts the lock column 21. The arc surface 1 213 of the lock column 21 rolls along the groove wall 312. When it rolls to the point where the plane 212 contacts the inclined section of the groove wall 312, the plane 212 slides along the groove wall 312, and finally the lock column 21 enters the upper half of the slot 31, so that the lock tongue 3 can slide freely up and down, and after stopping pressing, the lock tongue 3 and the lock core 2 can return to their initial positions.

Except for special instructions and further limitation of one preferred or optional technical means as another technical means, the preferred and optional technical means disclosed in the utility model can be arbitrarily combined to form several different technical solutions. Therefore, equivalent changes made according to the claims are still within the scope covered by the utility model.

Claims (6)

1. The self-fixing lockset is characterized by comprising a lock sleeve (1), a lock cylinder (2) and a lock tongue (3), wherein a lock cylinder jack (11) and a lock tongue jack (12) are respectively arranged on the lock sleeve (1), the lock cylinder (2) and the lock tongue (3) are respectively inserted into the lock cylinder jack (11) and the lock tongue jack (12), a spring (14) is arranged at the bottom end of the lock tongue (3), the spring (14) is abutted to the bottom of the lock tongue jack (12), a clamping groove (31) is formed in the lock tongue (3), a lock column (21) is arranged at one end of the lock cylinder (2), and the lock column (21) is clamped in the clamping groove (31);

The section of the clamping groove (31) comprises a groove top (311), a groove wall (312) and a groove bottom (313), wherein the groove top (311) and the groove bottom (313) are horizontally arranged, two ends of the groove wall (312) are respectively connected with the groove top (311) and the groove bottom (313), the upper half part of the groove wall (312) is vertically arranged with the groove top (311), and the lower half part of the groove wall (312) is obliquely arranged;

The section of the lock column (21) is of an elliptical structure, and comprises a first plane (211), a second plane (212), a first cambered surface (213), a second cambered surface (214) and a third cambered surface (215) which are connected end to end in sequence, wherein the first plane (211) is horizontally arranged and is attached to the bottom (313) of the groove in a locking state, and the third cambered surface (215) is attached to the bottom (313) of the groove and rolls along the bottom (313) of the groove in an unlocking state.

2. The self-fixing lock according to claim 1, wherein a plurality of sheet grooves (22) are formed in the lock cylinder (2), a plurality of blades (23) are inserted into the sheet grooves (22), one side of each blade (23) is provided with a limiting portion, and a miniature spring (24) is arranged between the limiting portion and the bottom of each sheet groove (22).

3. A self-locking lock according to claim 2, characterized in that the side wall of the lock cylinder jack (11) is provided with a limit groove (13), and the blade (23) is inserted into the limit groove (13) in the locked state.

4. The self-fixing lock according to claim 1, wherein a limit bolt (15) is arranged in the lock sleeve (1) in a penetrating way, and the limit bolt (15) extends into the lock cylinder jack (11) and limits the lock cylinder (2).

5. A self-locking lock according to claim 4, characterized in that the lock cylinder (2) is provided with an annular groove (25) at one end close to the lock cylinder (21), and the limit bolt (15) is fitted with the annular groove (25).

6. The self-fixing lockset according to claim 1, wherein spring slots are respectively arranged at the bottom end of the lock tongue (3) and the bottom end of the lock tongue jack (12), and two ends of the spring (14) are respectively inserted into the spring slots in the lock tongue (3) and the lock tongue jack (12).