Compression tensioning type locking device and crank lock

Abstract

The utility model relates to a compression tensioning type locking device and a crank lock, which comprise a lock box, a lock driving shaft, a lock transmission component and a pre-tensioning locking mechanism, the lock driving shaft is positioned and matched in the lock box in a rotating way, the lock driving shaft drives the lock transmission component, the pre-tensioning locking mechanism comprises a driving gear, a guide component and a pre-tensioning locking component with a lock head, and the guide component is matched with the lock box in a rotating way. The lock head is arranged towards the top of the lock box, the lock driving shaft drives the driving gear to rotate, the driving gear is in meshing transmission with a rack part of the pre-tightening locking component, the pre-tightening locking component is configured to be capable of moving along a preset track relative to the lock box under guiding and limiting of the guiding assembly, and the preset track has two moving directions; the two moving directions are the loosening and tightening direction of axial movement of the driving gear and the advancing and retreating direction of movement of the rack part in the extending direction, and in the process that the lock head is switched between the unlocking position and the locking position, the pre-tightening locking component synchronously displaces in the two moving directions. The lock has the advantages of being high in locking strength and easy to operate in the locking process.

Description

Technical Field

[0001] The utility model relates to the technical field of locks, in particular to a locking device with compression and tensioning functions on a lock. Background Art

[0002] Existing locks, such as connecting rod locks, have a locking process in which a handle drives a driving shaft in a lock box to rotate, the driving shaft drives a gear to rotate, the gear drives a connecting rod, and the connecting rod drives a lock bolt to insert into a lock seat on a door frame to complete the locking. A steel bolt is also provided on the driving shaft, and the steel bolt is pressed against the door frame to enhance the locking ability of the lock. However, the steel bolt is fixedly mounted on the driving shaft and rotates with the driving shaft. Therefore, there are still occasions where the locking strength of the lock cannot meet the requirements of high-strength locking. Utility Model Content

[0003] The purpose of the utility model is to overcome the defects of the prior art and provide a compression-tension locking device with high-strength locking and easy operation during the locking process.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] The lock assembly is actuated by a plurality of actuators, the actuators being adapted to move the locking cam relative to the locking cam when the locking cam is in a state of being moved relative to the locking cam.

[0006] Preferably, during the movement of the lock head from the unlocking position to the locking position, in the loosening and tightening direction of the predetermined trajectory, the lock head also has a lifting and unfolding stroke away from the locking position before the downward locking stroke when the lock head approaches the locking position.

[0007] Preferably, the guide assembly includes a guide rocker arm and a guide groove, the guide groove is arc-shaped, one end of the guide rocker arm is pivotally mounted on the lock box, and the other end of the guide rocker arm is hinged to the pre-tightening locking component, the pre-tightening locking component is provided with a guide pin, and the guide pin is guided and fitted in the guide groove.

[0008] Preferably, the pre-tightening locking component includes a U-shaped main frame, the lock head is installed at one end of the U-shaped main frame, the rack portion is provided on at least one horizontal wall plate on the U-shaped main frame, a convex portion inserted into the U-shaped main frame is provided on the lock box, the driving gear is provided on the bottom of the convex portion, and the guide assembly is arranged on both horizontal sides of the U-shaped main frame.

[0009] Preferably, the bottom plate of the U-shaped main frame is folded toward the back to form a lock mounting plate body, a lock bracket is installed on the lock mounting plate body, the lock bracket includes an L-shaped plate, the fixed plate body of the L-shaped plate is provided with a strip hole extending in the direction of looseness and tightness, the fixed plate body of the L-shaped plate is abutted against and fastened to the lock mounting plate body with an adjustable position via a fastener, a mounting ear is provided on the other plate body of the L-shaped plate, and the lock is a roller installed on the mounting ear via a wheel axle.

[0010] By adopting the above technical solution, the lock drive shaft drives the lock transmission assembly and drives the pre-tensioned locking mechanism at the same time, and adopts a movable pre-tensioned locking mechanism. The pre-tensioned locking member drives the lock head to move in two directions at the same time to achieve locking and unlocking. During the locking process, the lock head extends into the door frame and presses against the door frame. The lock head moves in two directions, which can achieve compression and tensioning of the door frame, achieve high-strength locking, and the locking process is easy to operate. In addition, the lock head can be better folded and stored, and has the advantage of compact structure.

[0011] The utility model is further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional diagram of the first embodiment of the utility model;

[0013] Figure 2a This is a state diagram of the lock head of the compression-tension locking device of the first embodiment of the utility model being in the unlocked position;

[0014] Figure 2b This is a state diagram of a locking head of a compression-tension locking device according to a first embodiment of the utility model being located at the end position of a lifting and unfolding stroke;

[0015] Figure 2c This is a diagram showing a state in which the lock head of a compression-tension locking device according to a first embodiment of the utility model is in a locked position;

[0016] Figure 3 This is an exploded view of a compression-tension locking device according to a first embodiment of the present utility model (the pull rod is omitted in the figure);

[0017] Figure 4 This is a structural schematic diagram of the first embodiment of the utility model applied to a crank lock;

[0018] Figure 5 for Figure 4 The cross-sectional view taken along line AA;

[0019] Figure 6 This is a schematic structural diagram of a compression-tension locking device according to Embodiment 2 of the present utility model;

[0020] Figure 7 It is a three-dimensional diagram of the compression and tension locking device of the second embodiment of the utility model;

[0021] Figure 8 This is a schematic diagram of the structure of a compression-tension locking device according to Embodiment 3 of the present invention. DETAILED DESCRIPTION

[0022] See attached Figures 1 to 5 The utility model discloses a compression tension type locking device, comprising a lock box 1, a lock drive shaft 2 and a lock transmission assembly. The lock drive shaft 2 is positioned and rotatably matched in the lock box 1. The lock drive shaft 2 drives the lock transmission assembly. The lock transmission assembly is a conventional component in a lock device, such as Figure 3 and Figure 5The transmission assembly for the crank lock shown in the figure adopts a matching structure of a gear 31 and a pull rod 32. The gear 31 is installed on the lock drive shaft 2. The rack section on the pull rod 32 is meshed with the gear 31. The lock transmission assembly has not been improved accordingly, so its specific structure is not described in detail. A pre-tensioned locking mechanism is also installed at the bottom of the lock box 1. The pre-tensioned locking mechanism includes a driving gear 4, a guide assembly, and a pre-tensioned locking member 5 with a lock head 51. The lock head 51 is arranged toward the top of the lock box 1. The lock drive shaft 2 drives the driving gear 4 to rotate. The pre-tensioned locking mechanism includes a driving gear 4, a guide assembly, and a pre-tensioned locking member 5 with a lock head 51. The lock head 51 is arranged toward the top of the lock box 1. The lock drive shaft 2 drives the driving gear 4 to rotate. The pre-tightening locking member 5 has a rack portion 52, and the driving gear 4 meshes with the rack portion 52 for transmission. The pre-tightening locking member 5 is configured to move along a predetermined trajectory relative to the lock box 1 under the guidance and restriction of the guide assembly. The predetermined trajectory has two moving directions, which are the loosening and tightening direction along the axial movement of the driving gear 4 (the direction where the Y axis is located) and the advancing and retreating direction along the extension direction of the rack portion 52 (the direction where the X axis is located). During the switching process between the unlocking position and the locking position of the lock head 51, the pre-tightening locking member 5 is synchronously displaced in the two moving directions. In the field of locks, the rack portion 52 usually adopts a row of holes arranged at intervals for the teeth of the driving gear 4 to mesh. Due to the meshing transmission of the driving gear 4 and the rack portion 52, the hole can be designed to have a wider size along the axial direction of the driving gear 4. During the locking process of the locking device, the lock drive shaft 2 drives the lock transmission assembly and the drive gear 4 to rotate at the same time. The drive gear 4 is directly fixed to the lock drive shaft to realize power transmission. The drive gear drives the pre-tightening locking member to move along a predetermined trajectory through the rack portion. The predetermined trajectory of the pre-tightening locking member forms a guide restriction on the pre-tightening locking member by the guide component. When locking, the pre-tightening locking member simultaneously moves toward the door frame position along the extension direction of the rack portion 52, that is, toward the locked position; at the same time, in the axial direction of the drive gear 4, the lock head 52 finally presses against the door frame to reach the locked position, that is, it moves synchronously in two directions, and finally the lock head reaches the door frame to lock. Compared with the traditional rigid bolt design, it has a higher strength locking performance and the locking operation process is easy.

[0023] In order to further ensure the compact structure and enable the lock head to better avoid the door frame, during the movement of the lock head 51 from the unlocking position to the locking position, in the loosening direction (the direction of the Y axis) of the predetermined trajectory, the lock head 51 also has a lifting and unfolding stroke away from the locking position before the downward locking stroke when the lock head 51 approaches the locking position. Figure 2a~Figure 2c As shown in the figure, when the lock moves from the unlocking position to the locking position for locking, the lock first unfolds (moves away from the top surface of the lock box 1), and then enters the locking position (moves toward the top surface of the lock box 1). In this way, when the lock is retracted to a sufficient position, the lock has a "folding" action toward the lock box, making the entire structure compact. Therefore, those skilled in the art can think of a design in which the lock retains a single pressing locking stroke in the loosening direction.

[0024] In order to make the pre-tightening and locking component operate more stably and reliably, the pre-tightening and locking component 5 includes a U-shaped main frame 5-1, a lock head 51 is installed at one end of the U-shaped main frame 5-1, and at least one horizontal wall plate 5-11 on the U-shaped main frame 5-1 is provided with the rack portion 52. In this specific embodiment, two horizontal wall plates 5-11 on the U-shaped main frame 5-1 are provided with rack portions 52, one of which is in working condition and the other is optional, which can meet the forward and reverse installation of the pre-tightening and locking mechanism. A convex portion 1-1 inserted into the U-shaped main frame 5-1 is provided on the lock box 1, and the driving gear 4 is provided on the bottom of the convex portion 1-1, and the guide components are arranged on both lateral sides of the U-shaped main frame 5-1.

[0025] As a design with a simple and compact structure, the present invention creates a guide assembly including a guide rocker arm 6 and a guide groove 11. The guide groove 11 is arc-shaped. One end of the guide rocker arm 6 is pivotally mounted on the lock box 1, and the other end of the guide rocker arm 6 is hinged on the pre-tightening locking member 5. The pre-tightening locking member 5 is provided with a guide pin 53. The guide pin 53 is guided and matched in the guide groove 11. The guide pin 53 is designed with a bolt that can be detachably mounted on the pre-tightening locking member 5. The arc-shaped guide groove can make the pre-tightening locking member move smoothly and prevent the lock from swinging around the guide pin. A guide rocker arm 6 is pivotally connected to both lateral side wall plates of the U-shaped main frame 5-1, and guide grooves 11 are provided on both lateral side walls of the protrusion 1-1.

[0026] The bottom plate of the U-shaped main frame 5-1 is folded toward the back to form a lock mounting plate body 5-2, on which a lock bracket 5-3 is installed, and the lock bracket 5-3 includes an L-shaped plate, on which a strip hole 5-31 extending in the direction of looseness or tightness is provided, and the fixed plate body of the L-shaped plate is abutted against and fastened to the lock mounting plate body 5-2 with an adjustable position via fasteners, and on the other plate body of the L-shaped plate a mounting ear 5-32 is provided, and the lock 51 is a roller installed on the mounting ear 5-32 via a wheel axle.

[0027] Of course, those skilled in the art can also make corresponding modifications to the guide assembly under the guidance of the essence of the invention, such as Figure 6 and Figure 7As shown, another embodiment of the invention is that the guide assembly includes a positioning plate, a first lifting rocker arm 71 and a second lifting rocker arm 72, one end of the first lifting rocker arm 71 and the second lifting rocker arm 72 is hinged on the pre-tightening locking member 5, and the pre-tightening locking member 5 is provided with a lifting plate 55, the first lifting rocker arm 71 and the second lifting rocker arm 72 are hinged on the lifting plate 55, and the other end of the first lifting rocker arm 71 and the second lifting rocker arm 72 is pivotally mounted on the lock box 1, and a positioning interval 12 is provided on the lock box 1 along the extension direction of the rack portion 52, and the positioning plate is inserted in the positioning interval 12, wherein the positioning plate is also designed with a tooth shape to form the rack portion 52. The pre-tightening locking member 5 includes a U-shaped main frame, a lifting frame is fixed on the U-shaped main frame, and the lifting plate 55 is provided on the lifting frame. The lock head is fixed to the bottom plate of the U-shaped main frame 5-1 by bolts. The above-mentioned guide assembly can realize the movement of the pre-tightening locking member along the above-mentioned preset trajectory, but it has the defect of numerous parts. The guide assembly can realize the movement of the pre-tightened locking member along the preset track, but it has the disadvantage of numerous parts. Alternatively, the lock head can also be fixed to the bottom plate of the U-shaped main frame 5-1 by bolts.

[0028] like Figure 8 As shown, another embodiment of the present invention, the guide assembly and Figure 6 and Figure 7 The main difference between the embodiments shown is that the hoisting plate 55 and the positioning plate (i.e., the rack portion 52) are integrally formed on a U-shaped structural member 5-4, and two U-shaped structural members 5-4 are symmetrically arranged on both sides of the lock box 1, and the two U-shaped structural members 5-4 are connected to each other to achieve synchronous action; the lock head 51 can be a roller directly mounted on the U-shaped structural member 5-4. The above-mentioned guide assembly can realize the movement of the pre-tightened locking member along the above-mentioned preset trajectory, but it has the disadvantage of numerous parts.

[0029] Therefore, the above embodiments are not limitations of the present invention, and all equivalent technical solutions made by those skilled in the art under the guidance of the essential spirit of the present invention shall fall within the protection scope of the present invention.

[0030] like Figure 4 and Figure 5 As shown, the above-mentioned compression-tension type locking device can be applied to a crank lock, and the lock box 1 of the above-mentioned compression-tension type locking device is fixed on the lock shell 8 of the crank lock, and the lock drive shaft 2 and the rotating shaft 91 for installing the handle 9 are coaxially connected, so that the lock transmission assembly and the pre-tensioning locking mechanism can be driven simultaneously through the handle to perform locking and unlocking operations.

Claims

1. A compression tension type locking device, comprising a lock box, a lock drive shaft and a lock transmission assembly, wherein the lock drive shaft is positioned and rotatably matched in the lock box, and the lock drive shaft drives the lock transmission assembly, characterized in that: A pre-tensioned locking mechanism is also installed at the bottom of the lock box, and the pre-tensioned locking mechanism includes a driving gear, a guide assembly and a pre-tensioned locking component with a locking head, the locking head is arranged toward the top of the lock box, and the lock driving shaft drives the driving gear to rotate, and the pre-tensioned locking component has a rack portion, and the driving gear and the rack portion are meshed for transmission. The pre-tensioned locking component is configured to be movable along a predetermined trajectory relative to the lock box under the guidance and restriction of the guide assembly, and the predetermined trajectory has two moving directions, which are respectively a loosening and tightening direction along the axial direction of the driving gear and an advancing and retreating direction along the extending direction of the rack portion. When the lock head switches between the unlocking position and the locking position, the pre-tensioned locking component is synchronously displaced in the two moving directions.

2. The compression-tension locking device according to claim 1, characterized in that: The predetermined trajectory corresponds to a lifting and unfolding stroke of the lock head away from the locking position before a pressing and locking stroke of the lock head approaching the locking position in the loosening and tightening direction during the process of guiding the lock head to move from the unlocking position to the locking position.

3. The compression-tension locking device according to claim 1 or 2, characterized in that: The guide assembly includes a guide rocker arm and a guide groove. The guide groove is arc-shaped. One end of the guide rocker arm is pivotally mounted on the lock box, and the other end of the guide rocker arm is hinged to the pre-tightening locking component. The pre-tightening locking component is provided with a guide pin, which is guided and fitted in the guide groove.

4. The compression-tension locking device according to claim 1 or 2, characterized in that: The pre-tightening locking component includes a U-shaped main frame, a lock head is installed at one end of the U-shaped main frame, the rack portion is provided on at least one horizontal wall plate on the U-shaped main frame, a convex portion inserted into the U-shaped main frame is provided on the lock box, the driving gear is provided on the bottom of the convex portion, and the guide assembly is arranged on both horizontal sides of the U-shaped main frame.

5. The compression-tension locking device according to claim 4, characterized in that: The bottom plate of the U-shaped main frame is folded toward the back to form a lock mounting plate body, a lock bracket is installed on the lock mounting plate body, the lock bracket includes an L-shaped plate, a fixed plate body of the L-shaped plate is provided with a strip hole extending in the direction of looseness and tightness, the fixed plate body of the L-shaped plate is abutted against and fastened to the lock mounting plate body with an adjustable position via a fastener, a mounting ear is provided on the other plate body of the L-shaped plate, and the lock is a roller installed on the mounting ear via a wheel axle.

6. A crank lock, comprising a lock housing, a handle mounted on the lock housing via a rotating shaft, and a locking device disposed at the bottom of the lock housing, the locking device comprising a lock box, a lock drive shaft, and a lock transmission assembly, the rotating shaft and the lock drive shaft are coaxial and linked, the lock drive shaft is positioned and rotatably matched in the lock housing, and the lock drive shaft drives the lock transmission assembly, characterized in that: The locking device is a compression-tension locking device as described in any one of claims 1 to 5 above.

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