A locking device driven by a cylinder

Abstract

The present application relates to a locking device driven by a cylinder and to the technical field of locking devices, which comprises a mounting plate and a driving cylinder fixed on the mounting plate, a locking assembly and a blocking assembly being provided on the side of the driving cylinder, a locking hole being provided on the mounting plate for a fixing pin to pass through, the blocking assembly comprising an interlocking plate and a locking rod, one side of the interlocking plate being hinged to the side of the mounting plate, and the other side of the interlocking plate being hinged to the telescopic rod of the driving cylinder, the locking assembly comprising a fixing pin, a first limiting groove being provided on the side of the fixing pin for inserting the locking rod, and a protective assembly being provided on the side of the mounting plate for overall protection; the present application improves the protective performance of the locking device by arranging the locking assembly, the blocking assembly and the protective assembly, prevents unrelated personnel from opening the locking device, and enhances the protective performance of the locking device.

Description

Technical Field

[0001] The present application relates to the technical field of locking devices, and in particular to a locking device driven by a cylinder. Background Art

[0002] Freight trucks need to keep their doors closed during transportation. In order to prevent the products transported inside the cargo compartment from being stolen, some locking mechanisms are used to enhance the anti-theft performance of the doors.

[0003] In the related art, the mechanical structure of the automobile door locking mechanism mainly includes four parts: a lock body device composed of an electronic password lock and a mechanical password lock, a locking device, a door latch device, and a door latch opening / closing device. Through the organic interconnection and interaction of these four parts, the opening / closing locking of the two opposing doors is achieved.

[0004] However, when the vehicle is parked or the driver is resting in a service area, a malicious person may violently pull out the latch on the car door and pry the door open because the latch on the car door is not firmly connected and is easily damaged. Summary of the Invention

[0005] The purpose of this application is to provide a locking device driven by a cylinder to solve the problem that the locking mechanism on the car door in the above-mentioned related art is easily damaged by violence and has poor protection performance.

[0006] The present application provides a cylinder-driven locking device that adopts the following technical solution:

[0007] A locking device driven by a cylinder, comprising a mounting plate and a driving cylinder fixed to the mounting plate, a locking assembly and a blocking assembly being provided on the side of the driving cylinder, a locking hole being provided on the mounting plate for a fixing pin to pass through, the blocking assembly comprising an interlocking plate and a locking rod, one side of the interlocking plate being hinged to the side of the mounting plate, and the other side of the interlocking plate being hinged to the telescopic rod of the driving cylinder, the locking assembly comprising a fixing pin, a first limiting groove being provided on the side of the fixing pin for the locking rod to be inserted into, and a protective assembly for overall protection being provided on the side of the mounting plate;

[0008] When the fixing pin is locked, the telescopic rod of the driving cylinder extends and drives the interlocking plate to rotate, and the locking rod on the side of the interlocking plate is inserted into the first limiting groove to lock the fixing pin; when the fixing pin is unlocked, the telescopic rod of the driving cylinder contracts and drives the interlocking plate to rotate in the opposite direction, and the locking rod on the side of the interlocking plate is separated from the first limiting groove.

[0009] By adopting the above technical solution, when the locking device is unlocked from the locked state, the telescopic rod of the driving cylinder contracts, driving the interlocking plate to rotate, and at the same time the locking rod on the side of the interlocking plate is separated from the corresponding first limiting groove, and the fixed pin can be pulled out of the locking hole; when the locking device is in the locked state, the fixing pin is inserted into the corresponding locking hole, and at the same time the locking rod fixed on the side of the interlocking plate is inserted into the corresponding first limiting groove, preventing unauthorized personnel from pulling out the pin, thereby improving the stability of the fixing pin when it is plugged in; and the driving cylinder, locking assembly and blocking assembly are protected by the protective assembly to prevent unauthorized personnel from destroying the locking device violently, thereby improving the protective performance of the locking device, preventing unauthorized personnel from opening the locking device, and strengthening the protective performance of the locking device.

[0010] Optionally, the locking assembly further includes a fixing plate, one side of which is hinged to the mounting plate, the other side of which is hinged to the fixing pin, and a second limiting groove for inserting the locking rod is provided on the fixing plate.

[0011] By adopting the above technical solution, when the locking device is unlocked, the locking rod is separated from the first limit groove and the second limit groove. At this time, the user rotates the fixing plate to make the fixing pin move a certain displacement in the locking hole, thereby unlocking the locked compartment door; when the locking device is locked, the fixing pin is inserted into the corresponding locking hole, and at the same time, the locking rod fixed on the side of the interlocking plate simultaneously conflicts with the bottom side of the first limit groove and the second limit groove. At this time, the user cannot rotate the fixing plate and cannot move the fixing pin in the locking hole; through the combined setting of the fixing plate and the fixing pin, the stability of the cooperation between the fixing pin and the locking hole is enhanced when in the locked state, thereby improving the stability of the locking device when locked.

[0012] Optionally, the end of the locking rod close to the first limiting groove is rounded, and the bottom side edges of the first limiting groove and the second limiting groove are both arc-shaped.

[0013] By adopting the above technical solution, when the locking device is in a locked state, the locking rod fixed on the side of the interlocking plate simultaneously interferes with the bottom side of the first limit groove and the second limit groove. The end of the locking rod is rounded, and the cross-sectional shape of the corresponding first limit groove and the second limit groove is also arc-shaped, which facilitates the locking rod to be inserted into the corresponding first limit groove and the second limit groove when the locking device is locked. It also facilitates the separation of the locking rod from the corresponding first limit groove and the second limit groove when unlocking, thereby reducing the friction between the locking rod and the inner wall of the corresponding first limit groove and the second limit groove.

[0014] Optionally, a linkage rod is provided on the side of the fixed plate, and both ends of the linkage rod are hinged to the end of the telescopic rod and the side of the fixed plate respectively.

[0015] By adopting the above technical solution, when the locking device is adjusted from the unlocked to the locked state, the telescopic rod extends and drives the linkage rod to move. The movement of the linkage rod drives the fixed plate to rotate, so that the fixing pin hinged to the fixed plate is inserted into the corresponding locking hole to lock the compartment door; when the locking device is unlocked, the telescopic rod contracts and drives the linkage rod to move in the opposite direction, further drives the fixed plate to rotate in the opposite direction, so that the fixing pin moves a certain distance in the locking hole to unlock the locked compartment door; through the setting of the linkage rod, the driving cylinder drives the fixing pin to move when working to lock or unlock the compartment door, reducing the steps required for the user to manually unlock, while reducing the time required for unlocking, and improving the unlocking efficiency of the locking device.

[0016] Optionally, a limit block is provided on the side of the fixing plate.

[0017] By adopting the above technical solution, when the locking device is in the locked state, the linkage rod drives the fixed plate to rotate, and the side of the limit block contacts the side of the mounting plate. The setting of the limit block limits the rotation range of the fixed plate.

[0018] Optionally, the protective assembly includes a protective cover and a protective shell, the protective cover is fixedly connected to the side of the mounting plate, one end of the protective shell is hinged to the side of the protective cover, and the other side of the protective shell is snap-fitted to the protective cover.

[0019] By adopting the above technical solution, during daily use of the locking device, a protective cover and a protective shell are installed on the outside of the locking device to reduce the possibility of external rain or dust affecting the locking device and enhance the dustproof or waterproof performance of the locking device.

[0020] Optionally, a clamping plate is provided on the side of the protective shell facing away from the hinge shaft, and a clamping slot for the clamping plate to be embedded in is provided on the protective cover.

[0021] By adopting the above technical solution, when protecting the locking device in daily life, the card block on the side of the protective shell is embedded in the corresponding card slot. Through the matching setting of the card block and the corresponding card slot, the protective shell and the protective cover are snapped and fixed, thereby enhancing the stability of the assembly of the protective shell and the protective cover.

[0022] Optionally, a clamping piece is provided on the side of the clamping plate, and the clamping piece includes a compression spring and an arc block. The clamping plate is provided with a placement groove for the compression spring and the arc block to be placed, and an arc groove for the arc block to be embedded is provided on the inner wall of the clamping groove.

[0023] By adopting the above technical solution, after the card plate on the side of the protective shell is inserted into the corresponding card slot, through the setting of the compression spring and the arc block, the compression spring in the compressed state squeezes the arc block into the corresponding arc slot, thereby further fixing the protective shell and the protective cover, and enhancing the assembly stability of the protective cover and the protective shell.

[0024] Optionally, the end of the telescopic rod is connected to a plug rod, a first plug hole for inserting the plug rod is provided on the side of the card plate, and a second plug hole for inserting the plug rod is provided on the side of the card slot.

[0025] By adopting the above technical solution, when the locking device is in the locked state, the telescopic rod is fully extended, and through the setting of the insertion rod, the insertion rod at the end of the telescopic rod is inserted into the corresponding first hole and the second hole in sequence. At this time, when the locking device is locked, the protective cover and the protective shell are synchronously locked, and unauthorized persons cannot open them; when the locking device is unlocked, the insertion rod at the end of the telescopic rod is pulled out from the first hole and the second hole. At this time, the fixing pin can be pulled out from the locking hole, and the protective shell can also be opened at the same time; thereby ensuring that the protective shell can only be opened when the locking device is unlocked, further enhancing the protective performance of the locking device, and preventing unauthorized persons from violently damaging the locking device.

[0026] Optionally, a transparent observation window is provided on the protective shell.

[0027] By adopting the above technical solution, when the locking device is working, the user can observe the operation of the internal locking device through the observation window, and can promptly discover any problems with the internal locking device.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. Through the arrangement of the locking assembly, the blocking assembly and the protective assembly, when the locking device is in the locked state, the fixing pin is inserted into the corresponding locking hole, and at the same time the locking rod fixed on the side of the interlocking plate is inserted into the corresponding first limiting groove, thereby preventing unauthorized personnel from pulling out the pin, thereby enhancing the stability of the pin when it is plugged in, and providing protection through the protective assembly to prevent unauthorized personnel from opening the locking device, thereby enhancing the protective performance of the locking device.

[0030] 2. Through the setting of the linkage rod, the driving cylinder drives the fixed pin to move to lock or unlock the door, reducing the steps required for the user to manually unlock, while reducing the time required for unlocking and improving the unlocking efficiency of the locking device.

[0031] 3. Through the coordinated setting of the protective component and the plug rod, it is ensured that the protective shell can only be opened when the locking device is unlocked, further strengthening the protective performance of the locking device and preventing the locking device from being violently damaged by unauthorized persons. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0033] Figure 2 This is a schematic diagram of the structure of the embodiment of the present application when the protective cover is opened;

[0034] Figure 3 is a schematic cross-sectional view of a locking assembly according to an embodiment of the present application;

[0035] Figure 4 This is a schematic cross-sectional view of the locking assembly and the branch assembly in accordance with an embodiment of the present application;

[0036] Figure 5 This is a schematic cross-sectional view of the locking device when unlocked according to an embodiment of the present application;

[0037] Figure 6 It is a partial cross-sectional structural diagram of the locking rod cooperating with the first limiting groove and the second limiting groove when the locking device of the embodiment of the present application is unlocked;

[0038] Figure 7 This is a schematic cross-sectional view of the embodiment of the present application showing the cooperation between the card plate and the card slot;

[0039] Figure 8 yes Figure 7 A magnified schematic diagram of part A;

[0040] Figure 9 It is a partial cross-sectional structural schematic diagram of the embodiment of the present application embodying the cooperation between the insertion rod and the first socket and the second socket.

[0041] In the figure, 1. mounting plate; 11. locking hole; 2. driving cylinder; 21. cylinder body; 22. telescopic rod; 23. insertion rod; 3. locking assembly; 31. fixing pin; 311. first limiting groove; 32. fixing plate; 321. second limiting groove; 322. limiting block; 33. first rotating shaft; 34. movable pin; 35. linkage rod; 4. blocking assembly; 41. interlocking plate; 42. locking rod; 43. second rotating shaft; 5. protective assembly; 51. protective cover; 511. card plate; 512. placement slot; 513. first socket; 52. protective shell; 521. card slot; 522. arc slot; 523. second socket; 53. clamping piece; 531. compression spring; 532. arc block; 54. observation window. DETAILED DESCRIPTION

[0042] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0043] Example:

[0044] Reference Figure 1 and Figure 2A locking device driven by a cylinder includes a mounting plate 1, which is mounted on the outside of the compartment door. A driving member, a locking assembly 3 and a blocking assembly 4 are provided on the side of the mounting plate 1. After the compartment door is closed by the locking assembly 3, the driving member starts and drives the blocking assembly 4 to lock the locking assembly 3, so that unauthorized personnel cannot open the compartment door. At the same time, a protective assembly 5 is provided on the side of the mounting plate 1 to protect the driving member, the locking assembly 3 and the blocking assembly 4.

[0045] Reference Figure 3 and Figure 4 The locking assembly 3 includes a fixing pin 31 and a fixing plate 32. The two compartment doors are locked by the fixing pin 31. A locking hole 11 for the fixing pin 31 to pass through is opened on the mounting plate 1. The end of the fixing pin 31 facing away from the mounting plate 1 is hinged to the fixing plate 32. The side of the fixing plate 32 facing away from the fixing pin 31 is hinged to the mounting plate 1 through a first rotating shaft 33 on the hinge seat. The user can drive the fixing pin 31 to move up and down in the locking hole 11 by rotating the fixing plate 32 to unlock or lock. The end of the fixing pin 31 facing away from the fixing plate 32 is hinged with a movable pin 34. At the same time, there is a gap between the outer sides of the fixing pin 31 and the movable pin 34 and the inner wall of the locking hole 11, which is convenient for the fixing plate 32 to drive the fixing pin 31 and the movable pin 34 to move in the locking hole 11 when the fixing plate 32 rotates.

[0046] Reference Figure 4 The driving member is a driving cylinder 2, which is fixed to the mounting plate 1 through a support seat. The driving cylinder 2 includes a cylinder body 21 and a telescopic rod 22. A linkage rod 35 is provided on the side of the fixing plate 32. One end of the linkage rod 35 is hinged to the fixing plate 32, and the other end of the linkage rod 35 is hinged to the telescopic rod 22. When the locking device is locked, the driving cylinder 2 is started and drives the telescopic rod 22 to move. The telescopic rod 22 drives the linkage rod 35 to rotate, and further drives the fixing plate 32 to rotate, thereby moving the fixing pin 31 downward along the locking hole 11; the side of the locking plate is connected to the limiting block 322. When the fixing pin 31 is in the locked state, the side of the limiting block 322 contacts the side of the mounting plate 1, thereby limiting the rotation range of the fixing plate 32.

[0047] Reference Figure 5 When the locking device is unlocked, the starting cylinder drives the telescopic rod 22 to retract. At the same time, the telescopic rod 22 drives the linkage rod 35 to move away from the fixed plate 32, and drives the fixed plate 32 to rotate upward around the first rotation axis 33. At the same time, the fixing pin 31 moves upward along the locking hole 11 for a certain distance, thereby unlocking the two locked doors.

[0048] Reference Figure 3 and Figure 4The blocking assembly 4 includes an interlocking plate 41 and a locking rod 42. The side of the interlocking plate 41 is hinged to the mounting plate 1 through a second rotating shaft 43. The side of the interlocking plate 41 facing away from the second rotating shaft 43 is hinged to the end of the telescopic rod 22, and the locking rod 42 is fixedly connected to the interlocking plate 41 through the second rotating shaft 43. The locking rod 42 is relatively fixed to the interlocking plate 41; when the telescopic rod 22 of the starting cylinder moves, it drives the interlocking plate 41 to rotate around the second rotating shaft 43, and the rotation of the interlocking plate 41 drives the synchronous rotation of the locking rod 42.

[0049] Reference Figure 5 The side of the fixing pin 31 is provided with a first limiting groove 311 for the locking rod 42 to be embedded in, and the side of the fixing plate 32 is also provided with a second limiting groove 321 for the locking rod 42 to be inserted into; the end edge of the locking rod 42 close to the fixing pin 31 is rounded, and the bottom side edges of the first limiting groove 311 and the second limiting groove 321 are both arc-shaped, which facilitates the locking rod 42 to be inserted into the first limiting groove 311 and the second limiting groove 321, and also facilitates the locking rod 42 to be separated and disengaged from the first limiting groove 311 and the second limiting groove 321.

[0050] Reference Figure 4 When the telescopic rod 22 of the driving cylinder 2 is fully extended, the locking rod 42 is aligned with the corresponding first limiting groove 311 (see Figure 5 ) and the second limiting groove 321 (see Figure 5 ), and at this time the fixing pin 31 is locked so that the fixing pin 31 cannot move in the locking hole 11.

[0051] Reference Figure 5 and Figure 6 When the locking device is unlocked, the telescopic rod 22 of the driving cylinder 2 contracts and drives the interlocking plate 41 to rotate downward around the second rotating axis 43. The rotation of the interlocking plate 41 causes the locking rod 42 to rotate downward around the second rotating axis 43 synchronously, so that the end of the locking rod 42 facing away from the second rotating axis 43 is separated from the first limiting groove 311 and the second limiting groove 321, thereby releasing the lock on the fixing pin 31 and the fixing plate 32; at the same time, the contraction of the telescopic rod 22 drives the fixing plate 32 to rotate downward around the first rotating axis 33, so that the fixing pin 31 moves upward a certain distance along the locking hole 11, thereby unlocking the compartment door.

[0052] Reference Figure 2A protective component 5 is provided on the side of the mounting plate 1. The protective component 5 includes a protective cover 51 and a protective shell 52. Both the protective cover 51 and the protective shell 52 are metal steel plates with strong protective performance. The protective cover 51 is welded and fixed to the side of the mounting plate 1. The lower side of the protective shell 52 is hinged to the protective cover 51. A card plate 511 is provided on the side of the protective shell 52 facing away from the hinge axis, and a card slot 521 is provided on the protective cover 51 for the card plate 511 to be embedded. Through the coordinated arrangement of the protective cover 51 and the protective shell 52, the influence of external rain or dust on the locking device is reduced, and the waterproof or dustproof performance of the locking device is enhanced.

[0053] Reference Figure 7 and Figure 8 A clamping member 53 is provided on the side of the clamping plate 511, and the clamping member 53 includes a compression spring 531 and an arc block 532. A placement groove 512 is provided on the side of the clamping plate 511 for the compression spring 531 and the arc block 532 to be placed. The two ends of the compression spring 531 are fixedly connected to the side of the arc block 532 and the bottom side of the placement groove 512 respectively. At the same time, an arc groove 522 is provided on the bottom side of the clamping slot 521 for the arc block 532 to be embedded in, reducing the possibility of loosening of the protective shell 52 and the protective cover 51 after assembly is completed, thereby enhancing the assembly stability of the protective shell 52 and the protective cover 51.

[0054] Reference Figure 9 The end of the telescopic rod 22 is fixedly connected to the insertion rod 23, a first hole 513 is provided on the side of the card plate 511, and a second hole 523 is provided on the inner wall of the card slot 521. When the telescopic rod 22 is fully extended, the insertion rod 23 passes through the first hole 513 and the second hole 523 in sequence, thereby fixing the protective cover 51 and the protective shell 52. Only when the staff controls the driving cylinder 2 can the insertion rod 23 be disengaged from the first hole 513 and the second hole 523, thereby preventing other people from violently damaging the locking device and enhancing the protection performance of the locking device.

[0055] Reference Figure 7 A transparent observation window 54 is provided on the side of the protective shell 52. The observation window 54 is made of tempered glass, and the status of the internal locking device can be observed through the observation window 54.

[0056] The implementation principle of the embodiment of this application is:

[0057] When the locking device is locked, the insertion rod 23 is inserted into the corresponding first hole 513 and the second hole 523, and unauthorized personnel cannot open the protective shell 52 and the protective cover 51; at the same time, the locking rod 42 is inserted into the corresponding first limiting groove 311 and the second limiting groove 321, thereby locking the fixed pin 31, so that the fixed pin 31 and the movable pin 34 cannot move in the locking hole 11 and are in a locked state.

[0058] When the locking device is unlocked from the locking device, the telescopic rod 22 of the driving cylinder 2 retracts and drives the insertion rod 23 to disengage from the first hole 513 and the second hole 523, and the protective shell 52 can be opened at this time; at the same time, the retraction of the telescopic rod 22 drives the interlocking plate 41 to rotate around the second rotating axis 43, and the rotation of the interlocking plate 41 causes the locking rod 42 to rotate synchronously around the second rotating axis 43, so that the end of the locking rod 42 facing away from the second rotating axis 43 disengages from the first limit groove 311 and the second limit groove 321; at the same time, the retraction of the telescopic rod 22 drives the fixing plate 32 to rotate around the first rotating axis 33, so that the fixing pin 31 moves upward along the locking hole 11, so that the compartment door can be opened.

[0059] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. A locking device driven by a cylinder, comprising a mounting plate (1) and a driving cylinder (2) fixed to the mounting plate (1), characterized in that: A locking assembly (3) and a blocking assembly (4) are provided on the side of the driving cylinder (2); a locking hole (11) for a fixing pin (31) to pass through is provided on the mounting plate (1); the blocking assembly (4) comprises an interlocking plate (41) and a locking rod (42); one side of the interlocking plate (41) is hinged to the side of the mounting plate (1); the other side of the interlocking plate (41) is hinged to the telescopic rod (22) of the driving cylinder (2); the locking assembly (3) comprises a fixing pin (31); a first limiting groove (311) for inserting the locking rod (42) is provided on the side of the fixing pin (31); and a protective assembly (5) for overall protection is provided on the side of the mounting plate (1); When the fixing pin (31) is locked, the telescopic rod (22) of the driving cylinder (2) extends and drives the interlocking plate (41) to rotate, and the locking rod (42) on the side of the interlocking plate (41) is inserted into the first limiting groove (311) to lock the fixing pin (31); when the fixing pin (31) is unlocked, the telescopic rod (22) of the driving cylinder (2) contracts and drives the interlocking plate (41) to rotate in the opposite direction, and the locking rod (42) on the side of the interlocking plate (41) is separated from the first limiting groove (311); The locking assembly (3) further comprises a fixing plate (32), one side of the fixing plate (32) is hinged to the mounting plate (1), the other side of the fixing plate (32) is hinged to the fixing pin (31), and a second limiting groove (321) for inserting the locking rod (42) is provided on the fixing plate (32); the end edge of the locking rod (42) close to the first limiting groove (311) is rounded, and the bottom side edges of the first limiting groove (311) and the second limiting groove (321) are both arc-shaped; a linkage rod (35) is provided on the side of the fixing plate (32), and the two ends of the linkage rod (35) are respectively hinged to the end of the telescopic rod (22) and the side of the fixing plate (32); a limiting block (322) is provided on the side of the fixing plate (32); The protective assembly (5) comprises a protective shell (52) and a protective cover (51), wherein the protective shell (52) is fixedly connected to the side of the mounting plate (1), one end of the protective cover (51) is hinged to the side of the protective shell (52), and the other side of the protective cover (51) is snap-fitted with the protective shell (52); a card plate (511) is provided on the side of the protective cover (51) facing away from the hinge axis, and a card slot (521) is provided on the protective shell (52) for the card plate (511) to be embedded; the end of the telescopic rod (22) is connected to the insertion rod (23), a first insertion hole (513) is provided on the side of the card plate (511) for the insertion rod (23), and a second insertion hole (523) is provided on the side of the card slot (521) for the insertion rod (23).

2. A cylinder-driven locking device according to claim 1, characterized in that: A clamping member (53) is provided on the side of the clamping plate (511), and the clamping member (53) includes a compression spring (531) and an arc-shaped block (532). A placement groove (512) for inserting the compression spring (531) and the arc-shaped block (532) is provided on the clamping plate (511), and an arc-shaped groove (522) for inserting the arc-shaped block (532) is provided on the inner wall of the clamping groove (521).

3. A cylinder-driven locking device according to claim 1, characterized in that: The protective cover (51) is provided with a transparent observation window (54).

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