A lock body that automatically locks when the door is closed

Abstract

The present invention discloses a lock body capable of automatically locking when the door is closed, comprising a lock housing, a transmission plate assembly, a separation plate assembly, a safety tongue assembly and a lock tongue assembly, wherein the separation plate assembly comprises a separation plate; the transmission plate assembly comprises a lateral block and a block spring. When the door is closed, the safety tongue assembly is compressed and recovered, and drives the separation plate to rotate; the lateral block locks the lock tongue assembly under the elastic force of the block spring, thereby realizing the locking of the lock tongue assembly. In the lock body of the present invention, when the door is closed, the safety tongue assembly is compressed and recovered, so that the lateral block is not affected by the separation plate assembly, and locks the lock tongue assembly under the elastic force of the block spring, thereby realizing the function of automatically locking when the door is closed.

Description

Technical Field

[0001] The invention relates to the field of locks, and in particular to a lock body which is automatically locked when a door is closed. Background Art

[0002] At present, the mortise locks on the market generally consist of a latch bolt and a square bolt. When the door is closed, the latch bolt is generally not locked, and the latch bolt can be opened by turning the door handle. For users who want to lock the latch bolt when the door is closed, this mortise lock cannot meet the requirements.

[0003] Therefore, how to design a lock body that automatically locks when the door is closed has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0004] In order to overcome the defects of the prior art described above, the present invention provides a lock body which can be automatically locked when the door is closed. The lock tongue can be locked when the door is closed, which is more convenient.

[0005] The technical solution adopted by the present invention to solve the problem is:

[0006] A lock body that automatically locks when the door is closed, comprising a lock housing, a transmission plate assembly, a separation plate assembly, a safety tongue assembly and a lock tongue assembly, wherein:

[0007] The separation paddle plate assembly comprises a separation paddle plate;

[0008] The transmission plate assembly includes a lateral stopper and a stopper spring;

[0009] When the door is closed, the safety tongue assembly is compressed and recovered, and drives the separation plate to rotate; the lateral block locks the lock tongue assembly under the elastic force of the block spring, thereby achieving the locking of the lock tongue assembly.

[0010] Therefore, when closing the door, the safety tongue assembly is compressed and recovered, and the lateral stopper is not affected by the separation plate assembly, so that it locks the lock tongue assembly under the elastic force of the stopper spring, thereby realizing the function of locking the door when closing it.

[0011] Further, the safety tongue assembly includes a safety tongue, a safety tongue positioning block and a safety tongue return spring, wherein:

[0012] The safety tongue is connected to the safety tongue positioning block;

[0013] The safety tongue always extends out of the lock housing under the elastic force of the safety tongue return spring;

[0014] The safety tongue positioning block is provided with a first abutting groove.

[0015] When the door is closed, the safety tongue is compressed and recovered, and drives the first abutting groove on the safety tongue positioning block to abut against the separation plate, thereby driving the separation plate to rotate.

[0016] Furthermore, the separation paddle assembly also includes a separation paddle spring, one end of the separation paddle spring is connected to the separation paddle, and the other end is connected to the lock housing.

[0017] When the door is not closed, that is, when the safety tongue assembly is not compressed, under the elastic force of the separation plate spring, the separation plate drives the lateral block away from the lock tongue assembly to unlock the lock tongue assembly.

[0018] Further, the separation paddle spring comprises a paddle spring body, a first extending end and a second extending end, wherein:

[0019] The paddle spring body and the first extended end are both connected to the separation paddle; and the second extended end is connected to the lock housing.

[0020] Furthermore, the transmission plate assembly also includes a connecting plate, and the lateral stopper is arranged on the connecting plate; a first bending portion is provided on the connecting plate.

[0021] When the door is not closed, that is, the safety tongue assembly is not compressed, under the elastic force of the separation plate spring, the separation plate abuts against the first bent portion of the connecting plate and drives the lateral stopper on the connecting plate away from the lock tongue assembly, thereby unlocking the lock tongue assembly.

[0022] Therefore, by providing the connecting plate and the lateral stopper, a set of lever amplification relationships can be formed to increase the unlocking force of the lock tongue assembly.

[0023] Furthermore, a mounting groove is provided in the lateral stopper, and a second bending portion which can be inserted into the mounting groove is provided at the end of the connecting plate.

[0024] Furthermore, the locking tongue assembly comprises a locking tongue, and the width of the locking tongue is greater than the width of the safety tongue.

[0025] When the door is closed, the locking tongue is compressed and recovered before the safety tongue.

[0026] Furthermore, the lock tongue assembly also includes a lock tongue positioning block and a lock tongue return spring, wherein:

[0027] The lock tongue is connected to the lock tongue positioning block;

[0028] The lock tongue always extends out of the lock housing under the elastic force of the lock tongue return spring;

[0029] The locking tongue positioning block is provided with a second abutting groove.

[0030] When the door is closed, the safety tongue assembly is compressed and recovered, and drives the separation plate to rotate; the lateral stopper abuts against the second abutment groove under the elastic force of the stopper spring, thereby locking the lock tongue.

[0031] Further, the stopper spring comprises a stopper spring body, a third extending end and a fourth extending end, wherein:

[0032] The block spring body and the fourth extension end are both connected to the lock housing, and the third extension end is connected to the lateral block.

[0033] Furthermore, the lock tongue is a two-way flip lock tongue.

[0034] To sum up, the present invention provides a lock body that automatically locks when the door is closed. When the door is closed, the safety tongue assembly is compressed and recovered, so that the connecting plate and the lateral block are not subject to the elastic force of the separation plate spring. The lateral block locks the lock tongue assembly under the elastic force of the block spring, thereby realizing the function of automatic locking when the door is closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is an exploded schematic diagram of a lock body that automatically locks when the door is closed according to the present invention;

[0036] Figure 2 for Figure 1 A schematic diagram of the structure of the middle separation plate;

[0037] Figure 3 for Figure 1 A schematic diagram of the structure of the middle separation paddle spring;

[0038] Figure 4 for Figure 1 Schematic diagram of the structure of the middle connecting plate;

[0039] Figure 5 for Figure 1 A schematic diagram of the structure of the middle lateral stopper;

[0040] Figure 6 for Figure 1 Schematic diagram of the structure of the middle stopper spring;

[0041] Figure 7 It is a structural schematic diagram of the lock body of the present invention when it is locked;

[0042] Figure 8 It is a schematic diagram of the structure of the lock body of the present invention when it is unlocked.

[0043] The meanings of the reference numerals are as follows:

[0044] 1. Lock housing; 11. First positioning column; 12. Second positioning column; 13. Third positioning column; 14. Fourth positioning column; 15. Fifth positioning column; 16. First mounting plate; 17. Second mounting plate; 2. Safety tongue assembly; 21. Safety tongue; 22. Safety tongue positioning block; 221. First abutting groove; 23. Safety tongue reset spring; 3. Lock tongue assembly; 31. Lock tongue; 32. Lock tongue positioning block; 321. Second abutting groove; 33. Lock tongue reset spring; 34. Lock tongue positioning block guide plate; 4. Separation plate assembly; 41. Separation plate; 411 , first boss; 412, second boss; 42, separation plate spring; 421, plate spring body; 422, first extension end; 423, second extension end; 5, transmission plate assembly; 51, lateral block; 511, mounting groove; 5111, horizontal portion; 5112, vertical portion; 52, block spring; 521, block spring body; 522, third extension end; 523, fourth extension end; 53, connecting plate; 531, first bending portion; 532, second bending portion; 533, first mounting hole; 534, second mounting hole; 6, guide column. DETAILED DESCRIPTION

[0045] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0047] like Figure 1-7As shown, the present invention provides a lock body for closing a door and automatically locking the door, comprising a lock housing 1. In this embodiment, the lock housing 1 is a cavity housing with a square cavity, and a separation plate assembly 4 and a safety tongue assembly 2 are arranged in the cavity housing. The safety tongue assembly 2 comprises a safety tongue 21, a safety tongue positioning block 22 and a safety tongue reset spring 23. The safety tongue 21 is connected to the safety tongue positioning block 22; one end of the safety tongue reset spring 23 is connected to the safety tongue positioning block 22, and the other end is connected to the first mounting plate 16 on the lock housing 1. Thus, the safety tongue 21 always extends out of the lock housing 1 under the elastic force of the safety tongue reset spring 23; the safety tongue positioning block 22 is provided with a first abutting groove 221; the separation plate assembly 4 comprises a separation plate 41 and a separation plate spring 42, and the lock housing 1 is further provided with a first positioning column 11, and the separation plate 41 is provided with a through hole. By inserting the through hole on the separation plate 41 into the first positioning column 11, the separation plate 41 is rotatably connected to the lock housing 1. The separation paddle spring 42 includes a paddle spring body 421, a first extending end 422 and a second extending end 423. In the present embodiment, the paddle spring body 421 and the first extending end 422 are both wound into a cylindrical shape, and the second extending end 423 extends directly. A first boss 411 and a second boss 412 are provided on the separation paddle 41. The paddle spring body 421 is sleeved on the first boss 411, and the first extending end 422 is sleeved on the second boss 412. In addition, a second positioning column 12 is further provided on the lock housing 1, and the second extending end 423 abuts against the second positioning column 12.

[0048] When the door is closed, the safety tongue 21 is compressed by the door frame and retracted, thereby driving the safety tongue positioning block 22 to retract. When the safety tongue positioning block 22 is retracted, its first abutment groove 221 can abut against the separation plate 41, thereby driving the separation plate 41 to overcome the elastic force of the separation plate spring 42 and rotate.

[0049] The lock body further comprises a transmission plate assembly 5 and a bolt assembly 3, wherein the bolt assembly 3 comprises a bolt 31, a bolt positioning block 32 and a bolt return spring 33, wherein the bolt 31 is connected to the bolt positioning block 32, wherein one end of the bolt return spring 33 is connected to the bolt positioning block 32, and the other end is connected to the second mounting plate 17 on the lock housing 1. Thus, the bolt 31 always extends out of the lock housing 1 under the elastic force of the bolt return spring 33. In this embodiment, the width of the bolt 31 is greater than the width of the safety tongue 21, so when the door is closed, the bolt 31 is compressed and recovered before the safety tongue 21. The bolt positioning block 32 is also provided with a second abutting groove 321.

[0050] The transmission plate assembly 5 includes a connecting plate 53, a lateral stopper 51 and a stopper spring 52. The connecting plate 53 is provided with a first mounting hole 533 and a second mounting hole 534. In this embodiment, the first mounting hole 533 and the second mounting hole 534 are waist-shaped holes. The lock housing 1 is provided with a fourth positioning column 14 and a fifth positioning column 15. By inserting the first mounting hole 533 and the second mounting hole 534 into the fourth positioning column 14 and the fifth positioning column 15 respectively, the connecting plate 53 is slidably connected to the lock housing 1. In addition, the fourth positioning column 14 and the fifth positioning column 15 are both provided with guide columns 6. By providing the guide columns 6, the shaking of the connecting plate 53 can be limited, thereby improving the stability of the connecting plate 53 when sliding. The two ends of the connecting plate 53 are respectively provided with a first bending portion 531 and a second bending portion 532. The lateral stopper 51 is provided with a mounting groove 511, which is in an inverted L-shape and includes a horizontal portion 5111 and a vertical portion 5112. By inserting the second bending portion 532 into the vertical portion 5112 of the mounting groove 511, the lateral stopper 51 can be mounted on the connecting plate 53. The stopper spring 52 includes a stopper spring body 521, a third protruding end 522 and a fourth protruding end 523. In this embodiment, the block spring body 521 is wound into a cylindrical shape, and the third extension end 522 and the fourth extension end 523 are directly extended; the lock housing 1 is provided with a third positioning column 13 and a bolt positioning block guide plate 34, and the block spring body 521 is sleeved on the third positioning column 13; the third extension end 522 is inserted into the horizontal part of the installation groove 511, and the fourth extension end 523 is in contact with the side of the bolt positioning block guide plate 34. Therefore, the lateral block 51 can be in contact with the second abutment groove 321 of the bolt positioning block 32 under the elastic force of the block spring 52, so that the recovery of the bolt 31 is limited, thereby realizing the locking of the bolt 31.

[0051] The working principle of the present invention is as follows:

[0052] When the door is not closed, that is, the safety tongue 21 is not compressed, its separation plate 41 abuts against the first bent portion 531 on the connecting plate 53 under the elastic force of the separation plate spring 42, and drives the first bent portion 531 to abut against the first mounting plate 16. At this time, the lateral stopper 51 on the connecting plate 53 is separated from the second abutting groove 321 on the lock tongue positioning block 32, and the recovery of the lock tongue 31 is not restricted, thereby achieving unlocking of the lock tongue 31.

[0053] When closing the door, the lock tongue 31 is compressed and recovered before the safety tongue 21, and then the second abutting groove 321 on the lock tongue positioning block 32 is first driven to recover. When the safety tongue 21 is compressed, it drives the separation plate 41 to overcome the elastic force of the separation plate spring 42 and rotate, and the separation plate 41 and the connecting plate 53 no longer abut each other. At this time, the lateral block 51 on the connecting plate 53 abuts against the side of the lock tongue positioning block 32 under the elastic force of the block spring 52, and is located above the second abutting groove 321. When the door is closed, that is, the lock tongue 31 is reset and inserted into the lock hole, the second abutting groove 321 also extends and abuts against the lateral block 51, so that the recovery of the lock tongue 31 is restricted, thereby achieving the locking of the lock tongue 31.

[0054] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above-mentioned technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also regarded as the protection scope of the present invention.

Claims

1. A lock body that automatically locks when the door is closed, characterized in that: It comprises a lock housing (1), a transmission plate assembly (5), a separation plate assembly (4), a safety tongue assembly (2) and a lock tongue assembly (3), wherein: The separation plate assembly (4) comprises a separation plate (41); The transmission plate assembly (5) comprises a lateral stopper (51) and a stopper spring (52); When the door is closed, the safety tongue assembly (2) is compressed and retracted, driving the separation plate (41) to rotate; the lateral stopper (51) locks the lock tongue assembly (3) under the elastic force of the stopper spring (52), thereby achieving locking of the lock tongue assembly (3); The safety tongue assembly (2) comprises a safety tongue (21), a safety tongue positioning block (22) and a safety tongue return spring (23), wherein: The safety tongue (21) is connected to the safety tongue positioning block (22); The safety tongue (21) always extends out of the lock housing (1) under the elastic force of the safety tongue return spring (23); The safety tongue positioning block (22) is provided with a first abutment groove (221); The separation plate assembly (4) further comprises a separation plate spring (42), one end of the separation plate spring (42) being connected to the separation plate (41) and the other end of the separation plate spring (42) being connected to the lock housing (1); The locking tongue assembly (3) comprises a locking tongue (31), wherein the width of the locking tongue (31) is greater than the width of the safety tongue (21); The lock tongue assembly (3) further comprises a lock tongue positioning block (32) and a lock tongue return spring (33), wherein: The lock tongue (31) is connected to the lock tongue positioning block (32); The lock tongue (31) always extends out of the lock housing (1) under the elastic force of the lock tongue return spring (33); The locking tongue positioning block (32) is provided with a second abutment groove (321).

2. The lock body according to claim 1, characterized in that: The separation plate spring (42) comprises a plate spring body (421), a first extending end (422) and a second extending end (423), wherein: The plate spring body (421) and the first extended end (422) are both connected to the separation plate (41); and the second extended end (423) is connected to the lock housing (1).

3. The lock body according to claim 1, characterized in that: The transmission plate assembly (5) further comprises a connecting plate (53), the lateral stopper (51) being arranged on the connecting plate (53), and a first bending portion (531) being provided on the connecting plate (53).

4. The lock body according to claim 3, characterized in that: A mounting groove (511) is provided in the lateral stopper (51), and a second bent portion (532) capable of being inserted into the mounting groove (511) is provided at the end of the connecting plate (53).

5. The lock body according to claim 1, characterized in that: The stopper spring (52) comprises a stopper spring body (521), a third extending end (522) and a fourth extending end (523), wherein: The block spring body (521) and the fourth extension end (523) are both connected to the lock housing (1), and the third extension end (522) is connected to the lateral block (51).

6. The lock body according to claim 1, characterized in that: The lock tongue (31) is a bidirectional flip lock tongue.

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