Locking door lock

Abstract

The utility model discloses a stop door lock which comprises a lock body and a lock cover, the lock body and the lock cover are fixedly installed through screws to form a lock box, an elastic linkage assembly is arranged in the lock body, the elastic linkage assembly is connected with a spring bolt, a lock cylinder is in driving connection with the elastic linkage assembly, a guide column is integrally arranged on the inner wall of the lock body, and the elastic linkage assembly comprises a transmission plate and a stop plate. A reset spring is connected to the stop plate, a rotary lock hole is formed in the other end of the lock cylinder and connected with the cam, the cam is driven to rotate by inserting a key into the lock hole, and positioning can also be achieved. The transmission plate is subjected to dual-mode limiting through the stop plate, on one hand, unlocking failure caused by the fact that the spring bolt cannot completely retreat to the lock body can be prevented, on the other hand, damage to the cam and the lock cylinder caused by the action of the spring bolt after locking can be prevented, and the stop plate can enhance the stability of the transmission plate; therefore, the lock tongue is prevented from being broken by violent prying.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, specifically to a stop door lock. Background Technology

[0002] Traditional door locks typically consist of a lock cylinder, a drive plate, and a bolt. In existing locks, the drive plate rotates with a cam in the lock cylinder, causing the bolt to extend out of the lock body to lock or retract inside the lock body to unlock.

[0003] Existing locks have the following drawbacks:

[0004] 1. The cam and the bolt are mechanically linked. If the bolt is forcibly broken, the bolt may break through the cam's restriction and force the lock to open.

[0005] 2. During use, the door may bump against the lock tongue, which can damage the lock cylinder connected to the cam, making it impossible to unlock.

[0006] 3. Due to the gap between the cam and the bolt, the bolt may not be able to fully retract into the lock body, resulting in unlocking failure.

[0007] Therefore, we propose a stop-lock door to solve the problems mentioned above. Utility Model Content

[0008] The purpose of this utility model is to provide a stop door lock to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, this utility model provides the following technical solution: a stop door lock, comprising: a lock body and a lock cover, wherein the lock body and the lock cover are fixedly installed by screws to form a lock box, a lock cylinder is vertically disposed through the middle of the lock body and the lock cover, an elastic linkage component is disposed in the lock body, the elastic linkage component is connected to the lock tongue, and the lock cylinder is driven to be connected to the elastic linkage component;

[0010] The lock body has an integrally formed guide post on its inner wall;

[0011] The elastic linkage component includes a transmission plate and a stop plate. Both the transmission plate and the stop plate are slidably connected to guide columns, and the sliding direction is perpendicular. The upper surface of the transmission plate is provided with two adjacent first tooth grooves and second tooth grooves, and the lower surface of the transmission plate is provided with a third tooth groove.

[0012] The upper end of the stop plate is integrally provided with a stop tooth, which slides and engages with the first tooth groove and the second tooth groove.

[0013] A reset spring is connected to the stop plate;

[0014] The other end of the lock cylinder is provided with a rotating lock hole, which is connected to a cam. By inserting a key into the lock hole, the cam can be rotated, thus achieving the above positioning.

[0015] Preferably, a connecting plate and a positioning plate are integrally provided at both ends of the transmission plate, the connecting plate is fixedly connected to the lock tongue, and the lock tongue movably passes through one side of the lock body.

[0016] Preferably, a guide groove is formed in the middle of the transmission plate, and the guide groove is slidably sleeved on the guide post.

[0017] Preferably, a sleeve is integrally provided at the other end of the upper surface of the stop plate, and a return spring is sleeved on the sleeve.

[0018] Preferably, the stop plate has a guide hole in the middle, the guide hole is short and strip-shaped, and the guide hole is movably sleeved on the guide post.

[0019] Preferably, a knob is installed at one end of the lock cylinder, and a cam is rotatably installed in the middle of the lock cylinder. The cam is inserted into the third tooth groove, and the knob and the cam are coaxially and fixedly connected.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. The transmission plate is limited in two modes by the stop plate. On the one hand, it can prevent the bolt from failing to fully retract into the lock body, thus causing unlocking failure. On the other hand, it can prevent the movement of the bolt after locking from damaging the cam and lock cylinder.

[0022] 2. The stop plate can also enhance the stability of the transmission plate, thereby preventing the lock tongue from being broken by force. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the internal structure of the lock body in this utility model;

[0025] Figure 3 This is a schematic diagram of the elastic linkage component in this utility model;

[0026] Figure 4 This is an exploded view of the elastic linkage component in this utility model.

[0027] In the diagram: 1. Lock body; 11. Guide post; 2. Lock cover; 3. Lock tongue; 4. Lock cylinder; 5. Knob; 51. Cam; 6. Elastic linkage assembly; 61. Transmission plate; 611. Connecting plate; 612. First tooth groove; 613. Third tooth groove; 614. Guide groove; 615. Positioning plate; 616. Second tooth groove; 62. Stop plate; 621. Sleeve; 622. Return spring; 623. Guide hole; 624. Stop tooth. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-4 This utility model provides a technical solution: a stop door lock, including: a lock body 1 and a lock cover 2, the lock body 1 and the lock cover 2 are fixedly installed by screws to form a lock box, a lock cylinder 4 is vertically inserted through the middle of the lock body 1 and the lock cover 2, an elastic linkage component 6 is provided inside the lock body 1, the elastic linkage component 6 is connected to the lock tongue 3, and the lock cylinder 4 is driven to connect to the elastic linkage component 6 to realize the conventional functions of the lock.

[0030] The inner wall of the lock body 1 is integrally provided with a guide post 11.

[0031] The elastic linkage component 6 includes a transmission plate 61 and a stop plate 62. A connecting plate 611 and a positioning plate 615 are integrally provided at both ends of the transmission plate 61. Two adjacent first tooth grooves 612 and second tooth grooves 616 are provided on the upper end surface of the transmission plate 61, and a third tooth groove 613 is provided on the lower end surface of the transmission plate 61. A guide groove 614 is opened in the middle of the transmission plate 61. The guide groove 614 is slidably sleeved on the guide post 11, so that the transmission plate 61 slides linearly.

[0032] The connecting plate 611 is fixedly connected to the bolt 3, and the bolt 3 moves through one side of the lock body 1.

[0033] A stop tooth 624 is integrally provided on one end of the upper surface of the stop plate 62. The stop tooth 624 slides and engages with the first tooth groove 612 and the second tooth groove 616 to position the transmission plate 61.

[0034] A sleeve 621 is integrally provided on the other end of the upper surface of the stop plate 62. A return spring 622 is sleeved on the sleeve 621. The return spring 622 is used to reset the stop plate 62.

[0035] The stop plate 62 has a guide hole 623 in the middle. The guide hole 623 is short and strip-shaped. The guide hole 623 is movably sleeved on the guide post 11, so that the stop plate 62 moves up and down guided by the guide post 11.

[0036] When the locking tongue 3 retracts, it drives the transmission plate 61 to slide to the right. Under the action of the transmission plate 61, the stop plate 62 moves upward a small distance. At this time, the return spring 622 is compressed. When the locking tongue 3 retracts completely, the stop tooth 624 slides into the second tooth groove 616. At this time, the return spring 622 is reset, the stop plate 62 moves downward, and the stop tooth 624 is stuck in the second tooth groove 616, positioning the transmission plate 61.

[0037] A knob 5 is installed at one end of the lock cylinder 4. A cam 51 is rotated in the middle of the lock cylinder 4. The cam 51 is inserted into the third tooth groove 613. The knob 5 and the cam 51 are coaxially fixedly connected. By rotating the knob 5, the cam 51 is driven to rotate, which in turn moves the transmission plate 61 left and right through the third tooth groove 613. This causes the stop tooth 624 to move back and forth between the first tooth groove 612 and the second tooth groove 616, positioning the transmission plate 61 in two positions, thereby positioning the bolt 3 in two states: extended and retracted.

[0038] The other end of the lock cylinder 4 is provided with a rotating lock hole, which is connected to the cam 51. By inserting a key into the lock hole, the cam 51 can be rotated, thus achieving the above positioning.

[0039] Working principle: In the unlocked state, the stop teeth 624 of the stop plate 62 are engaged in the second tooth groove 616, maintaining the transmission plate 61 in the unlocked state, and the lock tongue 3 is fully retracted into the lock body 1.

[0040] During the locking process, the key is inserted into the lock cylinder 4. Rotating the key drives the cam 51 to rotate. The cam 51 moves the third tooth groove 613, causing the transmission plate 61 to slide to the left, thereby disengaging the stop tooth 624 from the second tooth groove 616. The cam 51 continues to rotate until the transmission plate 61 pushes the bolt 3 to fully extend outside the lock body 1. Under the pressure of the return spring 622, the stop tooth 624 also slides into the first tooth groove 612. The stop tooth 624 can restrict the sliding of the transmission plate 61 within the first tooth groove 612, thereby keeping the bolt 3 in the extended state. Even if the bolt 3 is forcibly broken, the stop tooth 624 can also help fix the transmission plate 61 and prevent the lock from being broken.

[0041] In the locked state, the stop teeth 624 of the stop plate 62 are engaged in the first tooth groove 612, maintaining the transmission plate 61 in the locked state. The transmission plate 61 abuts against the inner wall of the lock body 1, and the lock tongue 3 extends completely out of the lock body 1.

[0042] Cam 51 presses against the third tooth groove 613, maintaining the locked state;

[0043] The transmission plate 61 will not allow the bolt 3 to be exposed outside the lock body 1 due to the gap between it and the cam 51, thus preventing it from being fully unlocked.

[0044] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stop lock, comprising: The lock body (1) and lock cover (2) are fixedly installed by screws to form a lock box. A lock cylinder (4) is vertically installed through the middle of the lock body (1) and lock cover (2). The lock body (1) is characterized in that: an elastic linkage component (6) is provided inside the lock body (1). The elastic linkage component (6) is connected to the lock tongue (3). The lock cylinder (4) is driven to connect to the elastic linkage component (6). The inner wall of the lock body (1) is integrally provided with a guide post (11); The elastic linkage component (6) includes a transmission plate (61) and a stop plate (62). Both the transmission plate (61) and the stop plate (62) are slidably connected to the guide post (11) with the sliding direction being perpendicular. The upper end surface of the transmission plate (61) is provided with two adjacent first tooth grooves (612) and second tooth grooves (616), and the lower end surface of the transmission plate (61) is provided with a third tooth groove (613). The upper end face of the stop plate (62) is integrally provided with a stop tooth (624), and the stop tooth (624) slides and engages with the first tooth groove (612) and the second tooth groove (616). A return spring (622) is connected to the stop plate (62); The other end of the lock cylinder (4) is provided with a rotating lock hole, which is connected to the cam (51). The key is inserted into the lock hole to drive the cam (51) to rotate.

2. The stop lock according to claim 1, characterized in that, The transmission plate (61) has a connecting plate (611) and a positioning plate (615) integrally installed at both ends. The connecting plate (611) is fixedly connected to the lock tongue (3), and the lock tongue (3) moves through one side of the lock body (1).

3. A stop lock according to claim 1, characterized in that, The transmission plate (61) has a guide groove (614) in the middle, and the guide groove (614) is slidably sleeved on the guide post (11).

4. A stop lock according to claim 1, characterized in that, A sleeve (621) is integrally provided on the other end of the upper surface of the stop plate (62), and a return spring (622) is sleeved on the sleeve (621).

5. A stop lock according to claim 1, characterized in that, The stop plate (62) has a guide hole (623) in the middle. The guide hole (623) is a short strip and is movably sleeved on the guide post (11).

6. A stop lock according to claim 1, characterized in that, A knob (5) is installed at one end of the lock cylinder (4), and a cam (51) is rotated in the middle of the lock cylinder (4). The cam (51) is inserted into the third tooth groove (613), and the knob (5) is coaxially and fixedly connected to the cam (51).

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