Mechanical door lock

Abstract

The utility model discloses a mechanical door lock, and relates to the technical field of door locks, and the mechanical door lock comprises a door body, a lock body is arranged at one end of the door body, a back locking device is arranged on the lower inner wall of the lock body, a sealing device is arranged on the upper inner wall of the lock body, the sealing device comprises a handle, two first shifting pieces are fixedly connected to the outer surface of the handle, and the two first shifting pieces are arranged on the outer surface of the handle. A pull block is arranged in the lock body, one end of the pull block is fixedly connected with a sliding rod, the outer surface of the sliding rod is sleeved with a sliding block, one end of the sliding rod is fixedly connected with a first spring bolt, the outer surface of the sliding rod is sleeved with a first spring, and the two ends of the first spring are fixedly connected with one ends of the opposite faces of the sliding block and the first spring bolt respectively. The outer surface of the handle is fixedly connected with first fixing plates, one ends of the two first fixing plates are jointly connected with a first rotating shaft in a rotating mode, the mechanical door lock can be unlocked in a labor-saving mode, and the safety performance is effectively guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of door locks, and in particular to a mechanical door lock. Background Art

[0002] Door locks play an important role in ensuring personal and property safety. According to the different unlocking methods, they can usually be divided into electronic door locks and mechanical door locks. Among them, mechanical door locks are unlocked or locked by a key that matches the lock.

[0003] After checking the publication (announcement) number: CN105649427B, a mechanical door lock is disclosed. This technology discloses "including a lock shell, a lock bolt mechanism, a lock bolt transmission mechanism, a lock head mechanism, a handle mechanism, a trigger structure and a clutch transmission mechanism. The lock head mechanism includes a lock core and a first toggle member that can rotate with the lock core; the handle mechanism includes an inner handle shaft, an outer handle shaft, and a clutch structure. The clutch structure is in a separated state when there is no external force, and is in a combined state when there is an external force to combine the inner handle shaft and the outer handle shaft into one. The inner handle shaft is provided with a second toggle member that retracts the lock bolt into the lock shell by toggling the lock bolt transmission mechanism. The trigger structure moves forward when the first toggle member rotates forward and pushes the clutch transmission mechanism to combine the clutch structure, and is driven to reset when the second toggle member rotates in the unlocking direction. The technical scheme has the advantages of avoiding the lock core from being damaged due to the relatively large unlocking torque, preventing the outer handle shaft or the contact point between the outer handle shaft and the lock body from being violently twisted, and improving safety. ";

[0004] With respect to the above-mentioned related technologies, the inventor believes that it is more laborious for users to unlock the door, and safety cannot be effectively guaranteed, so there is room for improvement. Utility Model Content

[0005] The purpose of this application is to provide a mechanical door lock to improve the problem of labor-saving unlocking and effectively ensuring safety performance.

[0006] A mechanical door lock provided in the present application adopts the following technical solution: a mechanical door lock comprises a door body, a lock body is provided at one end of the door body, an anti-locking device is provided on the lower inner wall of the lock body, a closing device is provided on the upper inner wall of the lock body, the closing device comprises a handle, two first paddles are fixedly connected to the outer surface of the handle, a pull block is provided inside the lock body, a sliding rod is fixedly connected to one end of the pull block, a slider is sleeved on the outer surface of the sliding rod, a first lock tongue is fixedly connected to one end of the sliding rod, a first spring is sleeved on the outer surface of the sliding rod, and two ends of the first spring are respectively fixedly connected to one end of the opposite surface of the slider and the first lock tongue.

[0007] By adopting the above technical solution, the key drives the lock rod to rotate, the rotation of the lock rod drives the second paddle to rotate, the rotation of the second paddle drives the circular plate to rotate, the circular plate will rotate eccentrically, and when the circular plate rotates, it drives the top rod to penetrate the third support plate and move reciprocatingly upward, and when the circular plate rotates, it drives the third spring to stretch and contract, and when the second paddle rotates, it will fit and move with the inner wall of the circular groove opened in the connecting plate, and the second paddle drives the connecting plate to move, and the movement of the connecting plate drives the connecting rod to move, and the movement of the connecting rod drives the second lock tongue to move respectively, and the handle is rotated, and the rotation of the handle drives the first paddle to rotate, the rotation of the first paddle drives the pull block to move, the movement of the pull block drives the sliding rod to move, the movement of the sliding rod drives the first spring to compress, and the sliding rod drives the first lock tongue to move, and the first lock tongue and the three second lock tongues move respectively to close the door body.

[0008] Optionally, the anti-locking device includes a first support plate, one end of which is fixedly connected to two second springs, one end of the two second springs is respectively fixedly connected to the second support plate, one end of the opposite surfaces of the two second support plates is commonly fixedly connected to a third lock tongue, a second rotating shaft is penetrated and connected to an inner wall of one side of the lock body, one end of the second rotating shaft is rotatably connected to an inner wall of one side of the lock body, a cam is sleeved on the outer surface of the second rotating shaft, and a knob is fixedly connected to one end of the second rotating shaft.

[0009] By adopting the above technical solution, the rotation of the knob drives the second rotating shaft to rotate, and the rotation of the second rotating shaft drives the cam to rotate. The outer surface of the cam fits with the outer surface of the third locking tongue. When the third locking tongue moves, it drives the two second support plates to move. When the two second support plates move, they respectively drive the second springs to stretch, and the cam drives the third locking tongue to move.

[0010] Optionally, the outer surface of the handle is fixedly connected to a first fixing plate, one end of the two first fixing plates is rotatably connected to a first rotating shaft, the two ends of the first rotating shaft are respectively rotatably connected to the inner walls of both sides of the lock body, and the outer surface of the first rotating shaft is penetrated by two first rotating plates.

[0011] By adopting the above technical solution, the first rotating shaft rotates on the inner wall of one side of the lock body, and the rotation of the first rotating shaft drives the two first rotating plates to rotate.

[0012] Optionally, one end of the third locking tongue is arc-shaped, and an outer surface of the third locking tongue fits with an outer surface of the cam.

[0013] By adopting the above technical solution, the rotation of the second shaft drives the cam to rotate, and the cam drives the third locking tongue to move.

[0014] Optionally, a connecting plate is provided inside the lock body, a through groove is provided at one end of the connecting plate, and inner walls on both sides of the through groove are rotatably connected to an eccentric shaft, a circular plate is sleeved on the outer surface of the eccentric shaft, a push rod is provided on the outer surface of the circular plate, a third support plate is sleeved on the outer surface of the push rod, a third spring is sleeved on the outer surface of the push rod, and the top of the third spring is fixedly connected to the bottom end of the third support plate.

[0015] By adopting the above technical solution, the rotation of the second paddle drives the circular plate to rotate, and the circular plate will rotate eccentrically. When the circular plate rotates, it drives the push rod to pass through the third support plate and move reciprocatingly upward. When the circular plate rotates, it drives the third spring to stretch and contract. When the second paddle rotates, it will fit and move with the inner wall of the circular groove opened in the connecting plate.

[0016] Optionally, both ends of the connecting plate are rotatably connected to the lower portion of one end of the opposite surface of the first rotating plate.

[0017] By adopting the above technical solution, the two first rotating plates are driven to rotate when the connecting plate moves.

[0018] Optionally, one end of the connecting plate is fixedly connected to a connecting rod, and one end of the connecting rod is fixedly connected to a second locking tongue.

[0019] By adopting the above technical solution, the connecting plate drives the connecting rod to move, and the movement of the connecting rod drives the second locking tongue to move.

[0020] Optionally, a locking rod is connected through one end of the lock body, one end of the locking rod is rotatably connected to one end of the lock body, a locking hole is opened at one end of the locking rod, a second paddle is fixedly connected to the outer surface of the locking rod, and the outer surface of the second paddle is respectively fitted with the outer surfaces of the first rotating plate and the circular plate.

[0021] By adopting the above technical solution, the rotation of the lock rod drives the second paddle to rotate, and the rotation of the second paddle drives the circular plate to rotate, and the circular plate will rotate eccentrically.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. The utility model uses a closing device through a rotating key, under the action of the rotating key, the key drives the lock rod to rotate, the rotation of the lock rod drives the second paddle to rotate, the rotation of the second paddle drives the circular plate to rotate, the circular plate will rotate eccentrically, and when the circular plate rotates, the push rod is driven to penetrate the third supporting plate and move reciprocatingly upward, and when the circular plate rotates, the third spring is driven to stretch and contract, and when the second paddle rotates, it will fit and move with the inner wall of the circular groove provided on the connecting plate, and the second paddle drives the connecting plate to move, and the movement of the connecting plate drives the connecting rod to move, and the movement of the connecting rod drives the second lock tongue to move respectively, and the handle is rotated, and the rotation of the handle drives the first paddle to rotate, and the rotation of the first paddle drives the pull block to move, and the movement of the pull block drives the sliding rod to move, and the movement of the sliding rod drives the first spring to compress, and the sliding rod drives the first lock tongue to move, and the first lock tongue and the three second lock tongues move respectively to close the door body, thereby achieving the purpose of labor-saving unlocking.

[0024] 2. The utility model uses an anti-locking device. Under the action of a rotating knob, the rotation of the knob drives the second rotating shaft to rotate, and the rotation of the second rotating shaft drives the cam to rotate. The outer surface of the cam fits with the outer surface of the third locking tongue. When the third locking tongue moves, it drives the two second supporting plates to move. When the two second supporting plates move, they respectively drive the second springs to stretch, and the cam drives the third locking tongue to move, thereby achieving the purpose of effectively ensuring safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the utility model.

[0026] Figure 2 It is a schematic diagram of the structure cutaway of the utility model.

[0027] Figure 3 It is a schematic diagram of the sealing device of the utility model.

[0028] Figure 4 This utility model Figure 3 A magnified view of the structure in the middle.

[0029] Figure 5 It is a cutaway schematic diagram of the sealing device of the utility model.

[0030] Figure 6 It is a schematic diagram of the anti-locking device of the utility model.

[0031] In the figure, 1, door body; 2, lock body; 3, anti-locking device; 4, closing device; 31, first support plate; 32, second spring; 33, second support plate; 34, third lock tongue; 35, second rotating shaft; 36, cam; 37, knob; 401, handle; 402, first paddle; 403, pull block; 404, slider; 405, slide bar; 406, first lock tongue; 407, first spring; 408, first fixed plate; 409, first rotating shaft; 410, first rotating plate; 411, connecting plate; 412, through groove; 413, round plate; 414, push rod; 415, third support plate; 416, third spring; 417, lock rod; 418, second paddle; 419, lock hole; 420, connecting rod; 421, eccentric shaft; 422, second lock tongue. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1 -Attached Figure 6 , further details of this application are given.

[0033] Example 1

[0034] A mechanical door lock, referring to Figure 1 and Figure 2 , including a door body 1, a lock body 2 is provided at one end of the door body 1, an anti-locking device 3 is provided on the lower inner wall of the lock body 2, a closing device 4 is provided on the upper inner wall of the lock body 2, the closing device 4 includes a handle 401, the outer surface of the handle 401 is fixedly connected with two first paddles 402, a pull block 403 is provided inside the lock body 2, one end of the pull block 403 is fixedly connected with a slide rod 405, the outer surface of the slide rod 405 is sleeved with a slider 404, one end of the slide rod 405 is fixedly connected with a first lock tongue 406, the outer surface of the slide rod 405 is sleeved with a first spring 407, and the two ends of the first spring 407 are respectively fixedly connected to one end of the opposite surface of the slider 404 and the first lock tongue 406.

[0035] Reference Figure 4 The outer surface of the handle 401 is fixedly connected to a first fixed plate 408, and one end of the two first fixed plates 408 is rotatably connected to a first rotating shaft 409. The two ends of the first rotating shaft 409 are rotatably connected to the inner walls of the lock body 2 on both sides respectively. The outer surface of the first rotating shaft 409 is penetrated by two first rotating plates 410. The first rotating shaft 409 rotates on the inner wall of one side of the lock body 2, and the rotation of the first rotating shaft 409 drives the two first rotating plates 410 to rotate.

[0036] Reference Figure 4, a connecting plate 411 is provided inside the lock body 2, and a through groove 412 is provided at one end of the connecting plate 411. The inner walls on both sides of the through groove 412 are rotatably connected with an eccentric shaft 421. A circular plate 413 is sleeved on the outer surface of the eccentric shaft 421. A push rod 414 is provided on the outer surface of the circular plate 413. A third supporting plate 415 is sleeved on the outer surface of the push rod 414. A third spring 416 is sleeved on the outer surface of the push rod 414. The top of the third spring 416 is fixedly connected to the bottom end of the third supporting plate 415. The second paddle 418 rotates to drive the circular plate 413 to rotate, and the circular plate 413 will rotate eccentrically. When the circular plate 413 rotates, the push rod 414 is driven to penetrate the third supporting plate 415 and move back and forth upward. When the circular plate 413 rotates, the third spring 416 is driven to stretch and contract. When the second paddle 418 rotates, it will fit and move with the inner wall of the circular groove provided in the connecting plate 411.

[0037] Reference Figure 4 The two ends of the connecting plate 411 are respectively rotatably connected to the lower part of one end of the opposite surface of the first rotating plate 410, and when the connecting plate 411 moves, it drives the two first rotating plates 410 to rotate.

[0038] Reference Figure 3 One end of the connecting plate 411 is fixedly connected to a connecting rod 420, and one end of the connecting rod 420 is fixedly connected to a second locking tongue 422. The connecting plate 411 drives the connecting rod 420 to move, and the movement of the connecting rod 420 drives the second locking tongue 422 to move.

[0039] Reference Figure 4 A locking rod 417 is connected to one end of the lock body 2, and one end of the locking rod 417 is rotatably connected to one end of the lock body 2. A locking hole 419 is opened at one end of the locking rod 417. A second paddle 418 is fixedly connected to the outer surface of the locking rod 417. The outer surfaces of the second paddle 418 are respectively in contact with the outer surfaces of the first rotating plate 410 and the circular plate 413.

[0040] The implementation principle of the embodiment of the present application is as follows: insert the key into the lock hole 419, rotate the key, the key drives the lock rod 417 to rotate, the rotation of the lock rod 417 drives the second paddle 418 to rotate, the rotation of the second paddle 418 drives the circular plate 413 to rotate, the circular plate 413 will rotate eccentrically, when the circular plate 413 rotates, it drives the top rod 414 to pass through the third support plate 415 and move back and forth upward, when the circular plate 413 rotates, it drives the third spring 416 to stretch and contract, when the second paddle 418 rotates, it will fit and move with the inner wall of the circular groove provided on the connecting plate 411, and the second paddle 418 drives The connecting plate 411 moves, and the movement of the connecting plate 411 drives the connecting rod 420 to move. The movement of the connecting rod 420 drives the second locking tongues 422 to move respectively. The handle 401 is rotated, and the rotation of the handle 401 drives the first paddle 402 to rotate. The rotation of the first paddle 402 drives the pull block 403 to move. The movement of the pull block 403 drives the slide bar 405 to move. The movement of the slide bar 405 drives the first spring 407 to be compressed. The slide bar 405 drives the first locking tongue 406 to move. The first locking tongue 406 and the three second locking tongues 422 move respectively to close the door body 1, thereby achieving the purpose of saving effort in unlocking.

[0041] Example 2

[0042] The difference between this embodiment and embodiment 1 is that:

[0043] Reference Figure 6 The anti-locking device 3 includes a first supporting plate 31, one end of the first supporting plate 31 is fixedly connected to two second springs 32, one end of the two second springs 32 is respectively fixedly connected to the second supporting plate 33, and one end of the opposite surface of the two second supporting plates 33 is commonly fixedly connected to the third locking tongue 34. A second rotating shaft 35 is penetrated and connected to the inner wall of one side of the lock body 2, one end of the second rotating shaft 35 is rotatably connected to the inner wall of one side of the lock body 2, and a cam 36 is sleeved on the outer surface of the second rotating shaft 35, and a knob 37 is fixedly connected to one end of the second rotating shaft 35. The knob 37 in the anti-locking device 3 is rotated, and the rotation of the knob 37 drives the second rotating shaft 35 to rotate, and the rotation of the second rotating shaft 35 drives the cam 36 to rotate, and the outer surface of the cam 36 is fitted with the outer surface of the third locking tongue 34. When the third locking tongue 34 moves, it drives the two second supporting plates 33 to move, and when the two second supporting plates 33 move, they respectively drive the second springs 32 to stretch, and the cam 36 drives the third locking tongue 34 to move, thereby achieving the purpose of effectively ensuring the safety performance.

[0044] Reference Figure 6 One end of the third locking tongue 34 is in an arc shape, and the outer surface of the third locking tongue 34 fits the outer surface of the cam 36. The rotation of the second rotating shaft 35 drives the cam 36 to rotate, and the cam 36 drives the third locking tongue 34 to move.

[0045] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A mechanical door lock, comprising a door body (1), characterized in that: A lock body (2) is provided at one end of the door body (1), a counter-locking device (3) is provided on the lower inner wall of the lock body (2), and a closing device (4) is provided on the upper inner wall of the lock body (2); The closing device (4) comprises a handle (401), the outer surface of which is fixedly connected to two first paddles (402), a pull block (403) is provided inside the lock body (2), one end of the pull block (403) is fixedly connected to a slide bar (405), the outer surface of the slide bar (405) is sleeved with a slider (404), one end of the slide bar (405) is fixedly connected to a first lock tongue (406), the outer surface of the slide bar (405) is sleeved with a first spring (407), and the two ends of the first spring (407) are respectively fixedly connected to one end of the opposite surface of the slider (404) and the first lock tongue (406).

2. A mechanical door lock according to claim 1, characterized in that: The anti-locking device (3) comprises a first support plate (31), one end of the first support plate (31) is fixedly connected to two second springs (32), one end of the two second springs (32) is respectively fixedly connected to a second support plate (33), one end of the opposite surfaces of the two second support plates (33) is commonly fixedly connected to a third lock tongue (34), a second rotating shaft (35) is connected through an inner wall of one side of the lock body (2), one end of the second rotating shaft (35) is rotatably connected to an inner wall of one side of the lock body (2), a cam (36) is sleeved on the outer surface of the second rotating shaft (35), and a knob (37) is fixedly connected to one end of the second rotating shaft (35).

3. A mechanical door lock according to claim 1, characterized in that: The outer surface of the handle (401) is fixedly connected to a first fixed plate (408), one end of the two first fixed plates (408) are rotatably connected to a first rotating shaft (409), the two ends of the first rotating shaft (409) are respectively rotatably connected to the inner walls of the lock body (2), and the outer surface of the first rotating shaft (409) is penetrated by two first rotating plates (410).

4. A mechanical door lock according to claim 2, characterized in that: One end of the third locking tongue (34) is in an arc shape, and the outer surface of the third locking tongue (34) fits the outer surface of the cam (36).

5. A mechanical door lock according to claim 1, characterized in that: The lock body (2) has a connecting plate (411) inside, one end of the connecting plate (411) is provided with a through slot (412), the inner walls on both sides of the through slot (412) are rotatably connected to an eccentric shaft (421), the outer surface of the eccentric shaft (421) is sleeved with a circular plate (413), the outer surface of the circular plate (413) is provided with a push rod (414), the outer surface of the push rod (414) is sleeved with a third support plate (415), the outer surface of the push rod (414) is sleeved with a third spring (416), and the top end of the third spring (416) is fixedly connected to the bottom end of the third support plate (415).

6. A mechanical door lock according to claim 5, characterized in that: Both ends of the connecting plate (411) are rotatably connected to the lower portion of one end of the opposite surface of the first rotating plate (410).

7. A mechanical door lock according to claim 5, characterized in that: One end of the connecting plate (411) is fixedly connected to a connecting rod (420), and one end of the connecting rod (420) is fixedly connected to a second locking tongue (422).

8. A mechanical door lock according to claim 1, characterized in that: One end of the lock body (2) is connected with a lock rod (417), one end of the lock rod (417) is rotatably connected to one end of the lock body (2), one end of the lock rod (417) is provided with a lock hole (419), the outer surface of the lock rod (417) is fixedly connected with a second paddle (418), and the outer surface of the second paddle (418) is respectively in contact with the outer surface of the first rotating plate (410) and the outer surface of the circular plate (413).

Images