CN220469620U - A simple fireproof lock - Google Patents

Abstract

The utility model discloses a simple fireproof lock, which comprises a lock shell, wherein a bevel tongue and a back-locking lock tongue are slidably arranged in the lock shell; the anti-lock bolt comprises a bolt slide plate, an upper bolt plate and a lower bolt plate which are arranged at the front end part of the bolt slide plate at intervals, and the bolt slide plate drives the upper bolt plate and the lower bolt plate to synchronously stretch out and draw back inside and outside a lock shell; the inclined tongue comprises an inclined tongue slide plate arranged below the lock tongue slide plate in a sliding manner and an inclined tongue connected to the front end part of the inclined tongue slide plate, and the inclined tongue is arranged between the upper lock tongue plate and the lower lock tongue plate and stretches out and draws back inside a lock shell under the drive of the lock tongue slide plate; the inclined tongue sliding plate and the lock tongue sliding plate are mutually overlapped, and the inclined tongue is arranged between the upper lock tongue plate and the lower lock tongue plate; namely, the inclined tongue and the back locking bolt are mutually overlapped, so that the occupied space of the lock shell is reduced; the inclined tongue sliding plate drives the inclined tongue to independently stretch out and draw back the upper tongue plate and the lower tongue plate below the tongue sliding plate, so that the inclined tongue sliding plate and the lower tongue plate do not interfere with each other; the volume of the lock body can be effectively reduced, the structure in the lock body is simplified, and the production cost of the door lock is effectively reduced.

Description

A simple fireproof lock

Technical field

The utility model relates to the technical field of door locks, and more specifically, to a simple fireproof lock.

Background technique

The door lock is a commonly used door protection device to prevent illegal intrusion by people outside the door. The lock body of the existing door lock is generally provided with an upper lock tongue and a lower lock tongue. The upper lock tongue extends into the buckle box on the door frame to position the door leaf. On the door frame, the door leaf is in a closed state; the upper lock tongue is linked with the door handle, and the upper lock tongue can be retracted into the lock body by turning the door handle to realize the door opening operation;

The lower lock tongue extends into the corresponding buckle box on the door frame, which can lock the door leaf on the door frame, so that the door lock is in a reverse lock state, so that people outside the door cannot open the door leaf; one side of the lower lock tongue is in contact with the lock knob inside the door The other side is linked with the lock cylinder; people inside the door can rotate the knob to drive the lower lock tongue to expand and retract, and people outside the door can use the key to drive the lock cylinder to drive the lower lock tongue to expand and contract, thereby realizing the unlocking and reverse locking of the door lock;

The way the upper and lower bolts of the existing door lock body are arranged requires a large space for installing door lock accessories, which increases the volume of the lock body; at the same time, the internal structure of the lock body is complicated and the number of door locks increases. The production cost of the lock body.

Utility model content

In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a simple fireproof lock.

In order to achieve the above purpose, the utility model provides the following technical solutions:

A simple fireproof lock, including a lock shell, in which a latch bolt and an anti-locking deadbolt are slidably provided; the anti-locking deadbolt includes a deadbolt slide plate and an upper deadbolt plate and a lower deadbolt plate spaced at the front end of the deadbolt slide plate. The deadbolt slide plate drives the upper deadbolt plate and the lower deadbolt plate to expand and contract synchronously inside and outside the lock housing;

The latch tongue includes a latch tongue slidingly disposed below the latch bolt slide plate and a latch tongue connected to the front end of the latch bolt slide plate. The latch tongue is disposed between the upper latch bolt plate and the lower latch bolt plate, and is disposed between the latch bolt plate and the lower latch bolt plate. Driven by the sliding plate, it expands and contracts inside and outside the lock housing.

The utility model further provides that: the oblique tongue is movably installed on the oblique tongue slide plate through the oblique tongue rod, and a compression spring is set on the oblique tongue rod, and the front end of the compression spring abuts on the oblique tongue slide plate. , its rear end is against the latch tongue rod; the elastic force of the compression spring causes the latch tongue to be pressed against the front end of the latch tongue slide plate.

The utility model further provides that: the front end of the latch tongue slide plate is provided with a front support plate and a rear support plate at intervals, and the latch tongue rod at the rear end of the latch tongue passes through the mounting holes of the front support plate and the rear support plate in sequence, so The front end of the compression spring is against the front support plate.

The utility model further provides that: the lock shell is equipped with an unlocking component that drives the latch bolt to telescope. The unlocking component includes an unlocking component and a linkage component that are both rotatably installed in the lock housing. The upper end of the linkage component is connected to the unlocking component. Matchingly, its lower end is connected with the latch tongue slide plate;

The unlocking piece drives the linkage piece to swing the lower end of the linkage piece backward and drive the latch tongue slide plate to slide backward.

The utility model further provides that: the upper end of the linkage piece is provided with a matching portion that matches the unlocking piece, and its lower end is inserted into the slot of the latch tongue slide plate.

The utility model further provides that: the unlocking member is connected with a first return torsion spring, and the first return torsion spring drives the unlocking member to rotate in the reverse direction;

The upper end of the linkage is connected with a second return torsion spring, which drives the linkage to swing in the reverse direction, and the lower end of the linkage drives the latch tongue slider to slide forward, causing the latch tongue to protrude. Lock case.

The utility model further provides that: the lock shell is provided with an anti-locking piece that matches the anti-locking bolt, and the anti-locking piece abuts against the locking tongue slide plate to prevent the locking bolt from retracting into the lock housing.

The utility model further provides that: the anti-locking piece is longitudinally slidably arranged in the lock housing, the anti-locking piece is provided with an anti-locking block, and the rear end of the lock tongue slide plate is provided with an anti-locking groove that matches the anti-locking block;

The anti-locking piece slides downward so that the anti-locking block is placed in the anti-locking groove to prevent the anti-locking bolt from sliding.

The utility model further provides that: the lock housing is provided with a guide column, and the lock tongue sliding plate and the latch tongue sliding plate are both transversely provided with guide grooves that match the guide column.

The utility model further provides that a cover plate matching the lock housing is provided above the lock housing.

Beneficial effects of the utility model: the fire-proof lock is provided with a latch bolt and an anti-locking bolt sliding in the lock shell. The anti-locking bolt includes a bolt slide plate and an upper bolt plate and a lower bolt plate spaced at the front end of the bolt slide plate. plate, the latch tongue includes a latch tongue sliding plate slidably disposed below the latch tongue slide plate and a latch tongue connected to the front end of the latch tongue slide plate, wherein the latch tongue slide plate and the latch tongue slide plate are stacked on each other, and the latch tongue is arranged on the upper between the deadbolt plate and the lower deadbolt plate; that is, the oblique tongue and the anti-locking deadbolt are stacked on each other to reduce the space occupied by the lock shell; and the oblique tongue slide plate drives the oblique tongue under the lock tongue slide plate and the upper deadbolt plate and the lower lock tongue plate. The deadbolt plates expand and contract independently without interfering with each other; it can effectively reduce the size of the lock body, while simplifying the internal structure of the lock body and effectively reducing the production cost of the door lock.

Description of drawings

Figure 1 is a schematic structural diagram of a simple fireproof lock of the present utility model;

Figure 2 is a matching diagram of the latch tongue and the unlocking assembly of a simple fireproof lock according to the present invention;

Figure 3 is a schematic structural diagram of a latch tongue of a simple fireproof lock according to the present invention;

Figure 4 is a schematic structural diagram of an anti-locking bolt of a simple fireproof lock according to the present invention;

Explanation of reference signs: 1. Lock case; 11. Cover plate; 12. Guide column; 2. Latch tongue; 21. Latch tongue; 211. Latch tongue lever; 212. Compression spring; 22. Latch tongue slide plate; 221. Slot; 222, front support plate; 223, rear support plate; 3, anti-lock tongue; 31, upper lock tongue plate; 32, lower lock tongue plate; 33, anti-lock groove; 4, unlocking component; 41, unlocking piece; 411. First return torsion spring; 42. Linkage piece; 421. Second return torsion spring; 422. Fitting part; 5. Anti-locking piece; 51. Anti-locking block.

Detailed ways

A simple fireproof lock of the present utility model will be further described in detail with reference to accompanying drawings 1 to 4.

A simple fire-proof lock, including a lock shell 1. A latch bolt 2 and an anti-locking deadbolt 3 are slidably provided in the lock shell 1; the anti-locking deadbolt 3 includes a deadbolt sliding plate and an upper end of the front end of the locking tongue sliding plate. The deadbolt plate 31 and the lower deadbolt plate 32, the deadbolt slide plate drives the upper deadbolt plate 31 and the lower deadbolt plate 32 to expand and contract synchronously inside and outside the lock housing 1; the latch tongue 2 includes an inclined latch slidingly arranged below the deadbolt slide plate. The latch slide 22 and the latch tongue 21 connected to the front end of the latch slide 22. The latch tongue 21 is arranged between the upper latch plate 31 and the lower latch plate 32, and is driven by the latch slide plate inside and outside the lock housing 1. Telescopic;

The oblique tongue slide plate 22 and the lock tongue slide plate are stacked on each other, and the oblique tongue 21 is arranged between the upper lock tongue plate 31 and the lower lock tongue plate 32; that is, the oblique tongue 2 and the anti-locking deadbolt 3 are stacked on each other, reducing the In terms of the space occupied by the lock shell 1, the latch bolt 2 and the anti-lock bolt 3 can share a buckle box on the door frame, simplifying the buckle box structure; and the latch tongue slide 22 drives the latch tongue 21 under the lock bolt slide to move on the upper lock bolt plate. 31 and the lower bolt plate 32 can expand and contract independently without interfering with each other, which can effectively reduce the volume of the lock body, while simplifying the internal structure of the lock body and effectively reducing the production cost of the door lock.

The latch tongue 21 is movably mounted on the latch tongue slide plate 22 through the latch tongue rod 211. The front end of the latch tongue slide plate 22 is provided with a front support plate 222 and a rear support plate 223. The tongue rod 211 passes through the mounting holes of the front support plate 222 and the rear support plate 223 in turn. A compression spring 212 is set on the oblique tongue rod 211, and the front end of the compression spring 212 is against the front support plate. 222, its rear end abuts the latch tongue 211, and the elastic force of the compression spring 212 presses the latch tongue 21 against the front end of the latch tongue slide plate 22; when it is necessary to change the direction of the latch tongue 2 ( According to the left door opening and the right door opening), you only need to pull the skew tongue 21 outward to overcome the elastic force of the compression spring 212 to separate the skew tongue 21 from the front support plate 222, and then move the skew tongue rod 211 around the mounting hole. Rotate 180 degrees to complete the reversal of the latch tongue 2, which is simple and convenient; the latch tongue 21 and the locking rod are threaded, making the two detachable, so that the latch tongue 21 can be placed on the latch tongue 2 slider. Perform assembly.

The lock housing 1 is equipped with an unlocking component 4 that drives the latch 2 to telescope. The unlocking component 4 includes an unlocking component 41 and a linkage component 42 that are both rotatably installed in the lock housing 1. The unlocking component 41 is connected to the door handle. The upper end of the linkage member 42 cooperates with the unlocking member 41, and its lower end is connected with the latch slide 22; turning the door handle can drive the unlocking member 41 to rotate in the lock housing 1, and the unlocking member 41 drives The linkage piece 42 swings the lower end of the linkage piece 42 backward and drives the latch tongue slide 22 to slide backward; the latch tongue 21 is retracted into the lock housing 1 to open the door leaf;

The unlocking member 41 is connected with a first return torsion spring 411, which drives the unlocking member 41 to rotate in the reverse direction; the upper end of the linkage member 42 is connected with a second return torsion spring 421. The second return torsion spring 421 drives the linkage member 42 to swing in the reverse direction. After the door is opened, the door handle is released. Under the elastic force of the second return torsion spring 421, the linkage member 42 swings in the reverse direction. The lower end of the linkage member 42 swings in the reverse direction. The slider of the latch tongue 2 is driven to slide forward, so that the latch tongue 21 automatically extends out of the lock housing 1; it is convenient for the latch tongue 21 to reposition the door leaf after closing the door;

The upper end of the linkage piece 42 is provided with a fitting portion 422 that matches the unlocking piece 41 , and its lower end is inserted into the slot 221 of the latch slide 22 so that the unlocking piece 41 can better pass through the fitting portion 422 The linkage piece 42 is driven to swing, and the lower end of the linkage piece 42 pushes the latch tongue slide 22 to slide; thus making the structure of the door lock more reliable and stable.

The lock shell 1 is provided with an anti-locking piece 5 that matches the anti-locking tongue 3. The anti-locking piece 5 is longitudinally slidably arranged in the lock shell 1. The anti-locking piece 5 is provided with an anti-locking block 51. The locking tongue The rear end of the slide plate is provided with an anti-lock groove 33 that matches the anti-lock block 51; when the anti-lock tongue 3 extends out of the lock housing 1, the anti-lock part 5 is pushed to slide downward, so that the anti-lock block 51 is placed in the anti-lock groove 33. To prevent the anti-locking bolt 3 from sliding backward, the anti-locking operation of the door lock can be realized, so that people outside the door cannot open the door leaf.

The lock housing 1 is provided with a guide post 12, and the lock tongue slide plate and the latch tongue slide plate 22 are both transversely provided with guide grooves that match the guide post 12; under the guidance of the guide rod, the lock tongue slide plate is and the latch slide 22 slide more smoothly, making the structure of the door lock more stable.

Each accessory of the fire-proof lock is made of metal. A cover plate 11 matching the lock shell 1 is provided above the lock shell 1. The cover plate 11 cooperates with the lock shell 1 to cover the accessories of the fire-proof lock. Closed in the lock shell 1; making the door lock have better fire prevention function.

The above are only the preferred embodiments of the present utility model. The protection scope of the present utility model is not limited to the above-mentioned embodiments. All technical solutions falling under the idea of the present utility model belong to the protection scope of the present utility model. It should be pointed out that for those of ordinary skill in the art, several improvements and modifications may be made without departing from the principles of the present utility model, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims (10)

1. A simple fireproof lock, including a lock shell, with a latch bolt and an anti-locking bolt slidingly provided in the lock housing; characterized in that: the anti-locking bolt includes a lock tongue slide plate and a lock tongue plate spaced at the front end of the lock tongue slide plate. The upper deadbolt plate and the lower deadbolt plate, the deadbolt sliding plate drives the upper deadbolt plate and the lower deadbolt plate to expand and contract synchronously inside and outside the lock housing; The latch tongue includes a latch tongue slidingly disposed below the latch bolt slide plate and a latch tongue connected to the front end of the latch bolt slide plate. The latch tongue is disposed between the upper latch bolt plate and the lower latch bolt plate, and is disposed between the latch bolt plate and the lower latch bolt plate. Driven by the sliding plate, it expands and contracts inside and outside the lock housing. 2. A simple fire-proof lock according to claim 1, characterized in that: the oblique tongue is movably installed on the oblique tongue slide plate through the oblique tongue rod, and a compression spring is set on the oblique tongue rod. The front end of the compression spring abuts the latch tongue slide plate, and its rear end abuts the latch tongue bar; the elastic force of the compression spring causes the latch tongue to compress the front end of the latch tongue slide plate. 3. A simple fireproof lock according to claim 2, characterized in that: the front end of the latch tongue slide plate is provided with a front support plate and a rear support plate at intervals, and the latch tongue rod at the rear end of the latch tongue passes through it in sequence. In the installation holes of the front support plate and the rear support plate, the front end of the compression spring is against the front support plate. 4. A simple fireproof lock according to claim 1 or 2 or 3, characterized in that: an unlocking component that drives the latch tongue to telescope is installed in the lock housing, and the unlocking component includes two components, both of which are rotatably installed in the lock housing. The unlocking piece and the linkage piece, the upper end of the linkage piece matches the unlocking piece, and the lower end of the linkage piece is connected to the latch tongue slide plate; The unlocking piece drives the linkage piece to swing the lower end of the linkage piece backward and drive the latch tongue slide plate to slide backward. 5. A simple fire-proof lock according to claim 4, characterized in that: the upper end of the linkage piece is provided with a matching portion that matches the unlocking piece, and its lower end is inserted into the slot of the latch tongue slide plate. . 6. A simple fireproof lock according to claim 5, characterized in that: the unlocking member is connected with a first return torsion spring, and the first return torsion spring drives the unlocking member to reversely rotate; The upper end of the linkage is connected with a second return torsion spring, which drives the linkage to swing in the reverse direction, and the lower end of the linkage drives the latch tongue slider to slide forward, causing the latch tongue to protrude. Lock case. 7. A simple fireproof lock according to claim 1, 2 or 3, characterized in that: the lock shell is provided with an anti-locking piece that matches the anti-locking bolt, and the anti-locking piece abuts against the locking tongue slide plate. , to prevent the lock tongue from retracting into the lock housing. 8. A simple fireproof lock according to claim 7, characterized in that: the anti-locking piece is longitudinally slidably arranged in the lock shell, the anti-locking piece is provided with an anti-locking block, and the rear end of the lock tongue slide plate is provided with an anti-locking block. There is an anti-lock slot that matches the anti-lock block; The anti-locking piece slides downward so that the anti-locking block is placed in the anti-locking groove to prevent the anti-locking bolt from sliding. 9. A kind of simple fireproof lock according to claim 1 or 2 or 3, characterized in that: the lock housing is provided with a guide column, and the lock tongue sliding plate and the latch tongue sliding plate are both arranged transversely with the guide column. Adaptable guide grooves. 10. A simple fireproof lock according to claim 1, 2 or 3, characterized in that: a cover plate matching the lock shell is provided above the lock shell.