Single-tongue lock body with anti-stuck function

Abstract

The utility model provides a single-tongue lock body that prevents jamming, including a shell body 1 and a shell body 2 that are connected to each other, a fixed plate connected to the shell body 1 on one side, a through hole that allows the lock tongue to pass through is provided on the fixed plate, and a lock groove connected to the door frame is provided on the other side of the fixed plate, and also includes a pull plate that is vertically slidably arranged in the shell body 1, a handle mechanism that is detachably connected to the pull plate at one end, a lever rotation shaft that is detachably abutted against the side of the pull plate at one end, and a lock tongue mechanism that is detachably abutted against the other end of the lever rotation shaft, the other end of the pull plate is detachably in contact with the lock core, and the lever rotation shaft is rotatably arranged on the inner side of the shell body 1. The purpose of the utility model is to provide a single-tongue lock body that prevents jamming, and the linkage of the handle mechanism, the lock tongue mechanism and the lock core is realized by the pull plate, and the lock body has a simple structure and is more stable and reliable to use.

Description

Technical Field

[0001] The utility model belongs to the technical field of door locks, in particular to a single-tongue lock body which is anti-stuck. Background Art

[0002] Currently, most door locks on the market are mechanical locks, which include magnetic locks. The internal structure of existing magnetic locks is relatively complex, and the unlocking and locking functions are often achieved through the cooperation of multiple components. During use, the lock body is often stuck due to improper cooperation tolerances between multiple components, and the lock tongue cannot be normally extended and retracted, affecting the normal use of the door lock.

[0003] The existing door lock has a complex internal structure and the lock body is easily stuck, resulting in the door lock being unable to be used normally. This solution solves this technical problem. Utility Model Content

[0004] The utility model aims to provide a single-tongue lock body which is anti-stuck, which solves the technical problems that the internal structure of the existing lock body is complex and the lock body is easy to get stuck. The linkage of the handle mechanism, the lock tongue mechanism and the lock core is realized by a pull plate. The lock body has a simple structure and is more stable and reliable to use.

[0005] A single-tongue lock body for preventing jamming, comprising a shell body 1 and a shell body 2 connected to each other, a fixing plate connected to the shell body 1 on one side, the fixing plate being provided with a through hole allowing a lock tongue to pass through, a lock groove connected to a door frame being provided at the other side of the fixing plate, and further comprising a pull plate vertically slidably arranged in the shell body 1, a handle mechanism detachably connected to the pull plate at one end, a lever rotation shaft detachably abutting against a side portion of the pull plate at one end, and a lock tongue mechanism detachably abutting against the other end of the lever rotation shaft, the other end of the pull plate being detachably in contact with a lock core, and the lever rotation shaft being rotatably arranged inside the shell body 1;

[0006] The locking tongue mechanism comprises a guide block horizontally slidably arranged in the housing 1, a locking tongue arranged at one end of the guide block, a spring 3 connected to one side of the guide block at one end, a baffle 1 arranged in the housing 2, the other end of the spring 3 connected to the baffle 1, an iron plate arranged in the locking tongue, and the locking tongue can be detachably inserted into the lock slot;

[0007] A locking groove is provided on the other side of the guide block, a locking block is provided at one end of the pull plate, the locking block is detachably inserted into the locking groove, a stopper is also provided on the other side of the guide block, and the other end of the lever rotating shaft is detachably abutted against the stopper.

[0008] A second stopper is also provided at one end of the pull plate, and the handle mechanism comprises a square core shaft rotatably provided on the first housing, a handle inserted in the square core shaft, and a toggle plate sleeved on the outer side of the square core, and a hook portion is provided on the side of the toggle plate that can be detachably abutted against the second stopper;

[0009] A limiting column 1 is arranged on the shell 1, and a limiting platform 1 and a limiting platform 2 are also arranged on the side of the toggle plate, which are respectively abutted against the limiting column. A torsion spring is sleeved on the outside of the square core shaft, one end of the torsion spring is connected to the square core shaft, and the other end of the torsion spring is abutted against the limiting column 1.

[0010] A stopper three is provided on the side of the pull plate, a limiting column two is provided on the shell one, the lever rotating shaft includes a sleeve rotatably sleeved on the limiting column two, and a stopper one and a stopper two respectively provided on the outer side of the shaft portion, the stopper one is detachably abutted against the stopper three, one side of the stopper two is detachably abutted against the stopper one, a limiting boss is provided on the shell one on the other side of the stopper two, and the other side of the stopper two is detachably abutted against the limiting boss.

[0011] A stopper four is arranged at the bottom end of the pull plate, and the lock core is detachably abutted against the upper and lower sides of the stopper four.

[0012] A receiving groove 1 is provided on one side of the pull plate, a spring 1 is arranged in the receiving groove 1, one end of the spring 1 abuts against the receiving groove 1, and the other end of the spring 1 abuts against a positioning steel ball, and a limiting hole 1 and a limiting hole 2 are provided on the shell 2, wherein the limiting hole 1 is elongated, and the positioning steel ball can be detachably embedded in the limiting hole 1 and the limiting hole 2.

[0013] The other side of the pull plate is provided with a second receiving groove, in which a second spring is arranged, one end of which abuts against the second receiving groove, and a second baffle is arranged on the first housing.

[0014] The other side of the pull plate is also provided with a plurality of protrusions 1, the shell 1 is provided with a plurality of elongated holes 1 corresponding to the protrusions 1, and the pull plate is slidably arranged in the elongated holes 1 through the protrusions 1;

[0015] A plurality of protrusions 2 are also arranged on the other side of the guide block, a plurality of elongated holes 2 corresponding to the protrusions 2 are opened on the shell 1, and the guide block is slidably arranged in the elongated holes 2 through the protrusions 2.

[0016] A silicone pad is embedded between the shell 1 and the shell 2, and the silicone pad is arranged on the rear side of the guide block. The guide block is in detachable contact with the side of the silicone pad.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] (1) One end of the pull plate is connected to the handle mechanism, and the side of the pull plate is linked to the bolt mechanism through the lever rotation shaft. The other end of the pull plate is in detachable contact with the lock core. The linkage of the handle mechanism, the bolt mechanism and the lock core is realized through the pull plate. The structure of the lock body is simple and the use is more stable and reliable.

[0019] (2) When the lock body is locked, the lock core drives the pull plate to slide downward, so that the hook of the handle mechanism's toggle plate is separated from the pull plate, avoiding violent unlocking when the handle is rotated outdoors, making the lock body safer and more reliable to use;

[0020] (3) The stopper 3 of the pull plate abuts against the stopper 1 of the lever rotation shaft, the lever rotation shaft is rotatably arranged on the housing 1 through the limit column 2, and the stopper 2 of the lever rotation shaft abuts against the stopper 1 of the lock tongue mechanism. By setting the lever rotation shaft, the rotation stroke of the handle is smaller during the unlocking operation, and the door lock is opened more conveniently and quickly;

[0021] (4) A silicone pad is embedded between the first and second shells. When the guide block is retracted, it can be detachably abutted against the side of the silicone pad. When the guide block is retracted, the impact on the first and second shells is smaller, thereby making the door lock quieter when opening and closing.

[0022] (5) By setting spring three, the lock tongue automatically retracts when the door leaf is in the open state, avoiding the potential safety hazard caused by the protrusion of the lock tongue, and making the use of the lock body safer and more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the internal structure of the utility model.

[0024] Figure 2 It is a schematic diagram of the combination of the pull plate and the lever rotation axis of the utility model.

[0025] Figure 3 It is a structural schematic diagram of the guide block of the utility model.

[0026] Figure 4 It is a structural schematic diagram of a baffle three of the utility model.

[0027] Figure 5 This is a schematic diagram of the structure of the pull plate of the utility model Figure 1 .

[0028] Figure 6 This is a schematic diagram of the structure of the pull plate of the utility model Figure 2 .

[0029] Figure 7 It is a schematic diagram of the internal structure of the utility model when the door is closed.

[0030] Figure 8 It is a schematic diagram of the internal structure of the utility model when the door is opened by using the handle.

[0031] Fig. 9 It is a schematic diagram of the internal structure of the utility model when it is reversely locked.

[0032] Fig.10 It is a schematic diagram of the internal structure of the utility model when unlocking.

[0033] Among them, in the figure: 1, fixing plate; 11, shell 1; 111, limiting column 1; 112, limiting column 2; 113, limiting boss; 114, blocking piece 2; 115, long hole 1; 116, long hole 2; 12, shell 2; 121, limiting hole 1; 122, limiting hole 2; 123, blocking piece 1; 124, silicone pad; 13, locking groove; 2, pull plate; 201, convex block 1; 21, locking block; 22, blocking platform 2; 23, blocking platform 3; 24, blocking platform 4; 25, receiving groove 1; 26 , spring one; 27, positioning steel ball; 28, receiving groove two; 29, spring two; 3, handle mechanism; 31, square core shaft; 32, handle; 33, toggle plate; 331, hook; 332, limit platform one; 333, limit platform two; 34, torsion spring; 4, lever rotation axis; 41, bushing; 42, block one; 43, block two; 5, lock tongue mechanism; 51, guide block; 511, locking groove; 512, block one; 515, protrusion two; 52, lock tongue; 53, spring three; 6, lock core. DETAILED DESCRIPTION

[0034] In order to more clearly illustrate the technical features of this solution, this solution is described below through specific implementation methods.

[0035] See also Figure 1-Figure 10 , a single-tongue lock body for preventing jamming, comprising a shell 11 and a shell 2 12 connected to each other, a fixing plate 1 connected to the shell 11 on one side, a through hole for allowing a lock tongue 52 to pass through is arranged on the fixing plate 1, a lock groove 13 connected to a door frame is arranged at the other side of the fixing plate 1, and also comprising a pull plate 2 vertically slidably arranged in the shell 11, a handle mechanism 3 detachably connected to the pull plate 2 at one end, a lever rotating shaft 4 detachably abutted against the side of the pull plate 2 at one end, and a lock tongue mechanism 5 detachably abutted against the other end of the lever rotating shaft 4, the other end of the pull plate 2 is detachably in contact with a lock core 6, and the lever rotating shaft 4 is rotatably arranged inside the shell 11;

[0036] The locking tongue mechanism 5 includes a guide block 51 horizontally slidably arranged in the housing 11, a locking tongue 52 arranged at one end of the guide block 51, a spring 3 53 connected to one side of the guide block 51 at one end, a baffle 123 arranged in the housing 2 12, the other end of the spring 3 53 is connected to the baffle 123, an iron plate is arranged in the locking tongue 52, and the locking tongue 52 can be detachably inserted into the lock slot 13;

[0037] A locking groove 511 is provided on the other side of the guide block 51, and a locking block 21 is provided at one end of the pull plate 2. The locking block 21 is detachably inserted into the locking groove 511, and a stopper 512 is also provided on the other side of the guide block 51. The other end of the lever rotating shaft 4 is detachably abutted against the stopper 512.

[0038] A stopper 22 is also provided at one end of the pull plate 2, and the handle mechanism 3 includes a square core shaft 31 rotatably provided on the housing 11, a handle 32 inserted in the square core shaft 31, and a toggle plate 33 sleeved on the outside of the square core, and a hook portion 331 is provided on the side of the toggle plate 33 to be detachably abutted against the stopper 22;

[0039] A limiting column 111 is arranged on the shell 11, and a limiting platform 1 332 and a limiting platform 2 333 which are respectively abutted against the limiting column are also arranged on the side of the toggle plate 33. A torsion spring 34 is sleeved on the outside of the square core shaft 31, one end of the torsion spring 34 is connected to the square core shaft 31, and the other end of the torsion spring 34 is abutted against the limiting column 111.

[0040] A stopper three 23 is provided on the side of the pull plate 2, a limiting column two 112 is provided on the shell one 11, and the lever rotating shaft 4 includes a sleeve 41 rotatably sleeved on the limiting column two 112, and a stopper one 42 and a stopper two 43 respectively provided on the outer side of the shaft portion, the stopper one 42 is detachably abutted against the stopper three 23, one side of the stopper two 43 is detachably abutted against the stopper one 512, and a limiting boss 113 is provided on the shell one 11 on the other side of the stopper two 43, and the other side of the stopper two 43 is detachably abutted against the limiting boss 113.

[0041] A stopper 24 is provided at the bottom end of the pull plate 2, and the lock core 6 is detachably abutted against the upper and lower sides of the stopper 24.

[0042] A receiving groove 25 is provided on one side of the pull plate 2, and a spring 26 is arranged in the receiving groove 25. One end of the spring 26 abuts against the receiving groove 25, and the other end of the spring 26 abuts against a positioning steel ball 27. A limiting hole 121 and a limiting hole 122 are provided on the shell 2 12, wherein the limiting hole 121 is elongated. Specifically, the limiting hole 121 is an elongated hole that is narrow at the top and wide at the bottom. Under the pressure of the spring 26, the positioning steel ball 27 can slide along the limiting hole 121, and the wide end of the limiting hole 121 is close to the limiting hole 122. The positioning steel ball 27 is detachably embedded in the limiting hole 121 and the limiting hole 122.

[0043] The other side of the pull plate 2 is provided with a second receiving groove 28, in which a second spring 29 is arranged, and one end of the second spring 29 abuts against the second receiving groove 28. The housing 11 is provided with a second baffle 114, and the second spring 29

[0044] The other side of the pull plate 2 is also provided with a plurality of protrusions 201, and the housing 11 is provided with a plurality of elongated holes 115 corresponding to the protrusions 201, and the pull plate 2 is slidably arranged in the elongated holes 115 through the protrusions 201;

[0045] A plurality of second protrusions 515 are further provided on the other side of the guide block 51 , and a plurality of second elongated holes 116 corresponding to the second protrusions 515 are opened on the housing 11 , and the guide block 51 is slidably disposed in the second elongated holes 116 through the second protrusions 515 .

[0046] A silicone pad 124 is embedded between the shell 1 1 and the shell 2 12. The silicone pad 124 is arranged on the rear side of the guide block 51. The guide block 51 and the side of the silicone pad 124 are in detachable contact. Specifically, an installation opening is opened between the shell 1 1 and the shell 2 12. When the shell 1 11 and the shell 2 12 are buckled together, the silicone pad 124 can be tightly clamped in the installation opening, so that the silicone pad 124 is firmly fixed on the rear side of the guide block 51, so as to buffer the guide block 51 when it retracts, avoid the impact of the guide block on the shell 1 11 and the shell 2 12, thereby producing a silent effect.

[0047] The limiting boss 113 and the second baffle 114 are formed by stamping from the housing 11 , and the first baffle 123 is formed by stamping from the housing 2 12 . Stamping is a prior art and will not be described in detail herein.

[0048] The specific working process of this utility model:

[0049] See also Figure 7 When the door is in a closed state, the lock tongue 52 is extended outward by the attraction of the permanent magnet in the lock groove 13 on the door frame, and overcomes the elastic force of the spring three 53 to drive the guide block 51 to slide outward along the shell 11. The guide block 51 drives the stopper 2 43 to swing counterclockwise through the stopper 1 512. When the other side of the stopper 2 43 abuts against the upper limit boss 113 of the shell 11, the lock tongue 52 completely enters the lock groove 13;

[0050] Operation of opening the door with handle 32: see Figure 8When the door is in the closed state, the handle 32 is rotated clockwise in the figure, and the handle 32 overcomes the elastic force of the torsion spring 34 through the square core shaft 31 to drive the toggle plate 33 to rotate. The hook portion 331 on the toggle plate 33 is clamped on the stopper 22 of the pull plate 2, driving the pull plate 2 to slide upward along the shell 11. In the process of the pull plate 2 sliding upward, the elastic force of the spring 29 in the accommodating groove 28 and the restraining force of the limiting hole 121 on the positioning steel ball 27 are overcome, and the stopper 3 23 of the pull plate 2 contacts with the stopper 42 and drives the stopper 42 to swing upward clockwise. The stopper 42 drives the stopper 2 43 of the lever rotating shaft 4 to rotate clockwise through the shaft sleeve 41 and abuts against the stopper 1 512 of the guide block 51. The stopper 1 512 of the guide block 51 is subjected to the thrust, and the guide block 51 overcomes the attraction of the permanent magnet in the lock groove 13 and slides into the lock body. When the lock After the tongue 52 is separated from the lock groove 13 to a certain distance, the elastic force of the spring three 53 is greater than the attraction of the permanent magnet. Under the elastic force of the spring three 53, the guide block 51 drives the lock tongue 52 to complete the retraction, and the guide block 51 abuts against the side of the silicone pad 124 between the shell 11 and the shell 2 12 to complete the unlocking operation. Through the setting of the silicone pad 124, the sound of the guide block 51 when retracting is smaller, which has a mute effect. At this time, the positioning steel ball 27 is located at the upper end of the limiting hole 121. After the handle 32 is released, the positioning steel ball 27 is pressed against the limiting hole 121 under the elastic force of the spring one 26, and drives the pull plate 2 to slide to the lower end of the limiting hole 121, so that the stopper four 24 is close to the lock core 6, so as to facilitate the combination of the lock core 6 and the pull plate 2 when the door is subsequently locked. At this time, the entire unlocking operation is completed.

[0051] Indoor anti-lock operation: see Fig. 9 One end of the lock core 6 is connected to an anti-locking mechanism. The handle of the anti-locking mechanism is rotated counterclockwise to drive the lock core 6 to be clamped on the upper side of the stopper 24 of the pull plate 2, and the pull plate 2 is driven to slide downward through the stopper 24. At this time, the locking block 21 of the pull plate 2 is inserted into the locking groove 511 of the guide block 51, and the positioning steel ball 27 is squeezed and falls into the limiting hole 122, thereby preventing the guide block 51 from retracting.

[0052] In the reverse locking state, when the handle 32 is rotated, due to the descent of the pull plate 2, the hook portion 331 of the toggle plate 33 cannot be combined with the stopper 22. Therefore, rotating the handle 32 outside the door cannot drive the pull plate 2 to move upward through the toggle plate 33, and then the lock tongue 52 will not retract, and the door lock will not be opened, thereby avoiding violent unlocking using the handle 32 outdoors. At this time, the reverse locking operation is completed.

[0053] To release the indoor lock: see Fig.10In the reverse locking state, the handle of the reverse locking mechanism is rotated clockwise, so that the lock core 6 is rotated clockwise to abut against the lower side of the stopper four 24, pushing the pull plate 2 to slide upward, so that the positioning steel ball 27 slides from the limiting hole two 122 to the limiting hole one 121, and the locking block 21 is separated from the locking groove 511. The reverse locking mechanism is further rotated, and the stopper three 23 of the pull plate 2 drives the stopper one 42 of the lever rotating shaft 4 to rotate, thereby driving the guide block 51 to slide through the stopper two 43, and the lock tongue 52 retracts to the inside of the lock body. At this time, the reverse locking is released.

[0054] Operation of outdoor key unlocking: Since the anti-locking mechanism is connected to the lock cylinder 6, the principle of using a key to unlock the door outdoors is the same as the principle of anti-locking, and the operation of using a key to lock the door is the same as anti-locking, which will not be described in detail here.

[0055] The technical features not described in the present invention can be realized by or by adopting the existing technology, and will not be elaborated here. Of course, it should be noted that the orientation or position relationship indicated by the terms "center", "up", "down", "left", "right", "front", "back", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product is usually placed when in use, or the orientation or position relationship commonly understood by technical personnel in this field. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention. The present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. An anti-stuck single-tongue lock body, comprising a housing (11) and a housing (12) connected to each other, a fixing plate (1) connected to the housing (11) on one side, a through hole being provided on the fixing plate (1), and a lock groove (13) connected to a door frame being provided at the other side of the fixing plate (1), characterized in that: It also includes a pull plate (2) vertically slidably arranged in the housing (11), a handle mechanism (3) detachably connected to the pull plate (2) at one end, a lever rotation shaft (4) detachably abutting against the side of the pull plate (2) at one end, and a lock tongue mechanism (5) detachably abutting against the other end of the lever rotation shaft (4), the other end of the pull plate (2) detachably contacting with the lock core (6), and the lever rotation shaft (4) rotatably arranged inside the housing (11); The locking tongue mechanism (5) comprises a guide block (51) horizontally slidably arranged in the housing (11), a locking tongue (52) arranged at one end of the guide block (51), and a spring (53) having one end connected to one side of the guide block (51); the housing (12) is provided with a blocking piece (123); the other end of the spring (53) is connected to the blocking piece (123); and the locking tongue (52) can be detachably inserted into the locking groove (13); A locking groove (511) is provided on the other side of the guide block (51), a locking block (21) is provided on one end of the pull plate (2), the locking block (21) is detachably inserted into the locking groove (511), a stopper (512) is further provided on the other side of the guide block (51), and the other end of the lever rotation shaft (4) is detachably abutted against the stopper (512).

2. The anti-stuck single-tongue lock body according to claim 1, characterized in that: A second stopper (22) is also provided at one end of the pull plate (2); the handle mechanism (3) comprises a square core shaft (31) rotatably provided on the first housing (11), a handle (32) inserted into the square core shaft (31), and a toggle plate (33) sleeved on the outside of the square core; a hook portion (331) is provided on the side of the toggle plate (33) that is detachably abutted against the second stopper (22); A limiting column 1 (111) is provided on the shell 1 (11), and a limiting platform 1 (332) and a limiting platform 2 (333) are also provided on the side of the toggle plate (33) and are respectively abutted against the limiting column. A torsion spring (34) is sleeved on the outside of the square core shaft (31), one end of the torsion spring (34) is connected to the square core shaft (31), and the other end of the torsion spring (34) is abutted against the limiting column 1 (111).

3. The anti-stuck single-tongue lock body according to claim 2, characterized in that: A stopper three (23) is arranged on the side of the pull plate (2), a limiting column two (112) is arranged on the shell one (11), and the lever rotating shaft (4) comprises a shaft sleeve (41) rotatably sleeved on the limiting column two (112), a stopper one (42) and a stopper two (43) respectively arranged on the outer side of the shaft, the stopper one (42) is detachably abutted against the stopper three (23), one side of the stopper two (43) is detachably abutted against the stopper one (512), and a limiting boss (113) is arranged on the shell one (11) on the other side of the stopper two (43), and the other side of the stopper two (43) is detachably abutted against the limiting boss (113).

4. The anti-stuck single-tongue lock body according to claim 3, characterized in that: A stopper four (24) is provided at the bottom end of the pull plate (2), and the lock core (6) is detachably abutted against the stopper four (24) at upper and lower sides.

5. The anti-stuck single-tongue lock body according to claim 4, characterized in that: A receiving groove (25) is provided on one side of the pull plate (2), a spring (26) is arranged in the receiving groove (25), one end of the spring (26) is in contact with the receiving groove (25), and the other end of the spring (26) is in contact with a positioning steel ball (27), and a limiting hole (121) and a limiting hole (122) are provided on the shell (12), wherein the limiting hole (121) is elongated, and the positioning steel ball (27) is detachably embedded in the limiting hole (121) and the limiting hole (122).

6. The anti-stuck single-tongue lock body according to claim 5, characterized in that: A second accommodating groove (28) is provided on the other side of the pull plate (2), a second spring (29) is arranged in the second accommodating groove (28), one end of the second spring (29) abuts against the second accommodating groove (28), and a second blocking piece (114) is provided on the first shell (11), the other end of the second spring (29) abuts against the second blocking piece (114).

7. The anti-stuck single-tongue lock body according to claim 6, characterized in that: A plurality of protrusions (201) are also provided on the other side of the pull plate (2), and a plurality of elongated holes (115) corresponding to the protrusions (201) are provided on the shell (11), and the pull plate (2) is slidably arranged in the elongated holes (115) through the protrusions (201); A plurality of second protrusions (515) are further provided on the other side of the guide block (51), and a plurality of second elongated holes (116) corresponding to the second protrusions (515) are provided on the first shell (11), and the guide block (51) is slidably arranged in the second elongated holes (116) via the second protrusions (515).

8. The anti-stuck single-tongue lock body according to claim 7, characterized in that: A silicone pad (124) is embedded between the shell one (11) and the shell two (12), and the silicone pad (124) is arranged on the rear side of the guide block (51). The guide block (51) is in detachable contact with the side of the silicone pad (124).

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