阅读说明：本技术 门锁离合装置 (Door lock clutch device ) 是由 吕思华 郑善友 于 2019-09-29 设计创作，主要内容包括：本发明涉及门锁离合装置锁领域,公开了一种门锁离合装置,包括设置在托盘上的上锁机构、解锁机构和驱动电机；所述上锁机构中,卡紧组件中的卡紧块的中部与所述托盘转动连接,上部与待上锁停止器卡紧或分离,底部位于上锁连动组件中的拨动销下部或上部；所述上锁连动组件中的拨动杆的一端与所述上锁驱动组件中的主动块衔接；所述主动块与所述托盘转动连接,能够在外力作用下绕所述托盘转动；所述驱动电机用于驱动所述解锁机构中的解锁连动组件带动拨动组件将所述卡紧块与所述待上锁停止器分离。本门锁离合装置的上锁和解锁以及门板的开合共用一个驱动电机,能够有效避免车门在颠簸运行中自动打开,车门密闭性良好。(The invention relates to the field of door lock clutch locks, and discloses a door lock clutch, which comprises a locking mechanism, an unlocking mechanism and a driving motor, wherein the locking mechanism, the unlocking mechanism and the driving motor are arranged on a tray; in the locking mechanism, the middle part of a clamping block in a clamping assembly is rotatably connected with the tray, the upper part of the clamping block is clamped or separated with a stopper to be locked, and the bottom of the clamping block is positioned at the lower part or the upper part of a toggle pin in a locking linkage assembly; one end of a poke rod in the locking linkage assembly is connected with an active block in the locking driving assembly; the driving block is rotatably connected with the tray and can rotate around the tray under the action of external force; the driving motor is used for driving the unlocking linkage assembly in the unlocking mechanism to drive the shifting assembly to separate the clamping block from the stopper to be locked. The door lock clutch device can lock, unlock and open and close the door plate by sharing one driving motor, can effectively prevent the door from being automatically opened in bumpy operation, and has good door tightness.)

1. A door lock clutch device is characterized by comprising a locking mechanism, an unlocking mechanism and a driving motor which are arranged on a tray; in the locking mechanism, the middle part of a clamping block in a clamping assembly is rotatably connected with the tray, the upper part of the clamping block is clamped or separated with a stopper to be locked, and the bottom of the clamping block is positioned at the lower part or the upper part of a toggle pin in a locking linkage assembly; one end of a poke rod in the locking linkage assembly is connected with an active block in the locking driving assembly; the driving block is rotatably connected with the tray and can rotate around the tray under the action of external force; the driving motor is used for driving the unlocking linkage assembly in the unlocking mechanism to drive the shifting assembly to separate the clamping block from the stopper to be locked.

2. The door lock clutch device according to claim 1, wherein the clamping assembly comprises the clamping block and a first elastic member, two ends of the first elastic member are respectively and fixedly connected with the upper part of the clamping block and the tray, and a connection point of the middle part of the clamping block and the tray is located outside a straight line where the first elastic member is located.

3. The door lock clutch device according to claim 2, wherein the first elastic member is a tension spring.

4. The door lock clutch device according to claim 1, wherein a transition block is rotatably connected to the bottom of the clamping block, a rotating shaft of the transition block is parallel to the moving pin, and the transition block is located at the upper part or the lower part of the moving pin.

5. The door lock clutch device according to claim 1, wherein the locking linkage assembly includes the toggle rod, the toggle pin, a sleeve rod and a linkage block, the bottom end of the toggle rod is connected with the driving block, and the top end of the toggle rod is rotatably connected to the tray; the poke rod is provided with a first limiting hole for limiting one end of the sleeve rod, one end of the sleeve rod is positioned in the first limiting hole, and the other end of the sleeve rod is fixedly connected with the linkage block; one end of the linkage block is rotatably connected to the tray, and the other end of the linkage block is connected with the poking pin.

6. The door lock clutch device according to claim 1, wherein the locking driving assembly includes the driving block and a second elastic member, the driving block is rotatably connected to the tray through a rotating shaft, one end of the second elastic member is fixed to the rotating shaft, and the other end of the second elastic member is fixed to the driving block; when the driving block is extruded by external force, the driving block can rotate around the rotating shaft along the tray.

7. The door lock engaging and disengaging device according to claim 6, further comprising a guiding member, wherein the guiding member is rotatably connected to the driving block, and when the driving block is pressed by an external force to rotate around the rotating shaft along the tray, the guiding member is in direct contact with an object to which the external force is applied.

8. The door lock clutching device of claim 7, wherein the guide is a roller rotatably coupled to the driving block.

9. The door lock clutch device according to any one of claims 6 to 8, wherein the driving block is provided with a second limiting hole for limiting the poke rod, and the bottom end of the poke rod is located in the second limiting hole.

10. The door lock clutch device according to any one of claims 6 to 8, wherein the second elastic member is a torsion spring, a body of the torsion spring is sleeved and fixed on the rotating shaft, and the other end of the torsion spring is fixedly connected with the driving block.

11. The door lock clutch device according to claim 1, wherein the unlocking linkage assembly includes a spiral-linear shaft sleeve and a guide shaft, one end of the spiral-linear shaft sleeve is coaxially sleeved or embedded on the output shaft of the driving motor, the other end of the spiral-linear shaft sleeve is coaxially sleeved or embedded on the guide shaft, and the guide shaft is coaxially fixed with the stopper to be locked; the guide shaft, the stopper to be locked, the output shaft of the driving motor and the spiral-linear shaft sleeve are coaxially arranged, and the driving motor is used for driving the spiral-linear shaft sleeve to do reciprocating linear or spiral motion along the axis of the spiral-linear shaft sleeve.

12. The door lock clutch device according to claim 11, wherein the spiral-linear shaft sleeve is a hollow cylinder structure, and has spiral teeth a 32 on the inner wall of one end and a plurality of ribs a33 distributed circumferentially and parallel to the central axis of the inner wall of the other end; a spiral key A34 or a spline A35 matched with the spiral tooth A32 or the rib A33 is arranged on the outer wall of the output shaft of the driving motor, and a spline B36 or a spiral key B37 matched with the rib A33 or the spiral tooth A32 is arranged on the outer wall of the guide shaft; one end of the spiral-linear shaft sleeve with the spiral teeth A32 is sleeved on the spiral key A34 or the spiral key B37, and one end with the ribs A33 is sleeved on the spline A35 or the spline B36.

13. The door lock clutch device according to claim 11, wherein the spiral-linear shaft sleeve is a solid shaft structure, and the outer wall of one end of the spiral-linear shaft sleeve is provided with a spiral key A34, and the outer wall of the other end of the spiral-linear shaft sleeve is provided with a plurality of splines A35 which are distributed circumferentially and are parallel to the central axis of the spiral-linear shaft sleeve; the inner wall of the output shaft of the driving motor is provided with spiral teeth A32 or ribs A33 matched with the spiral key A34 or the spline A35, and the inner wall of the guide shaft is provided with ribs B38 or spiral teeth B39 matched with the spline A35 or the spiral key A34; the end of the spiral-straight shaft sleeve with the spiral key A34 is nested in the spiral tooth A32 or the spiral tooth B39, and the end with the spline A35 is nested in the rib A33 or the rib B38.

14. The door lock clutch device according to claim 11, wherein one end of the spiral-linear shaft sleeve is of a hollow cylindrical structure, the other end of the spiral-linear shaft sleeve is of a solid shaft structure, the inner wall of one end with the hollow cylindrical structure is provided with spiral teeth A32 or a plurality of ribs A33 which are circumferentially distributed and parallel to the central axis of the hollow cylindrical structure, and one end with the solid shaft structure is provided with a spline A35 or a spiral key A34;

the outer wall of the output shaft of the driving motor is provided with a spiral key B37 or a spline B36 matched with the spiral tooth A32 or the rib A33, and the inner wall of the guide shaft is provided with a rib B38 or a spiral tooth B39 matched with the spline A35 or the spiral key A34; one end of the spiral-linear shaft sleeve with a hollow structure is sleeved on the output shaft for driving the motor, and the other end with a solid shaft structure is nested in the guide shaft;

or the inner wall of the output shaft of the driving motor is provided with ribs C40 or spiral teeth C42 matched with the spline A35 or the spiral key A34; the outer wall of the guide shaft is provided with a spiral key C41 or a spline C43 matched with the spiral teeth A32 or the ribs A33; one end of the spiral-linear shaft sleeve with a hollow structure is nested in the output shaft for driving the motor, and one end with a solid shaft structure is nested on the guide shaft.

15. The door lock clutch device according to any one of claims 11 to 14, wherein a first cushion member is interposed between the screw-linear bushing and the output shaft of the driving motor, and/or a second cushion member is interposed between the screw-linear bushing and the guide shaft.

16. The door lock clutching device of claim 15, wherein the first and/or second bumper is a spring.

17. The door lock clutch device according to any one of claims 11 to 14, wherein the toggle assembly comprises a toggle lever and a third elastic member, the middle of the toggle lever is rotatably connected to the tray, the front end of the toggle lever is a free end, and the tail end of the toggle lever is rotatably connected to the spiral-linear bushing; the two ends of the third elastic piece are respectively fixedly connected with the front end of the shifting lever and the tray, and a connecting point of the middle of the shifting lever and the tray in rotating connection is located outside a straight line where the third elastic piece is located.

18. The door lock clutching device of claim 17, wherein the third resilient member is a tension spring.

19. The door lock clutch device according to any one of claims 1 to 5, wherein the stopper to be locked is a ratchet, and the upper portion of the chuck block has a pawl; when the pawl is meshed with the ratchet wheel, the clamping block is clamped with the stopper to be locked, and when the pawl is separated from the ratchet wheel, the clamping block is separated from the stopper to be locked.

Technical Field

The invention relates to the field of sliding plug door locks, in particular to a door lock clutch device.

Background

At present, bus door, subway door or high-speed railway door use the stopper sliding door usually, and stopper sliding door closure is good, and occupation space is few for whole motorcycle type elegant appearance, the security and the closure of stopper sliding door are directly influenced to the goodness of the lock of stopper sliding door, and in order to improve the security of stopper sliding door, the researcher in the field mainly puts the object of research in the structure of stopper sliding door lock.

The currently used sliding plug door lock structure is that when the vehicle door is closed, a guide wheel on the door lock is guided into a guide rail on the vehicle frame, the movement of the door lock is limited through the guide rail, and the door lock is fixed on the vehicle door, so that the movement of the vehicle door is limited, and the purpose of locking the door is achieved. However, the door lock structure has great potential safety hazard, because the vehicle is in a driving process and the road surface is hollow, the guide wheel on the door lock can roll back and forth in the guide rail, so that the door is poor in sealing performance, and airflow can enter the vehicle from the door gap during high-speed running to influence the riding experience of passengers; when the vibration is large, the phenomenon that the guide wheel returns from the original path in the guide rail and slides out can even occur, so that the vehicle door can be automatically opened, and great potential safety hazard exists.

Although some sliding plug door locks can avoid the problem that the door is automatically opened when the door shakes and jolts, generally, the opening and closing of the door and the locking and unlocking of the door lock respectively need a driving mechanism, namely, the whole set of door needs at least two sets of driving motors, one set of driving motors is used for driving the locking and unlocking of the door lock, the other set of driving motors is used for driving the opening and closing of the door lock, the cost is undoubtedly increased, and the structure of the door is complex.

Disclosure of Invention

The purpose of the invention is as follows: aiming at the problems in the prior art, the invention provides the door lock clutch device which can effectively prevent the locked door from being automatically opened in bumpy operation and has good tightness; and the locking and unlocking of the door lock and the opening and closing of the vehicle door share one driving motor,

the technical scheme is as follows: the invention provides a door lock clutch device, which comprises a locking mechanism, an unlocking mechanism and a driving motor, wherein the locking mechanism, the unlocking mechanism and the driving motor are arranged on a tray; in the locking mechanism, the middle part of a clamping block in a clamping assembly is rotatably connected with the tray, the upper part of the clamping block is clamped or separated with a stopper to be locked, and the bottom of the clamping block is positioned at the lower part or the upper part of a toggle pin in a locking linkage assembly; one end of a poke rod in the locking linkage assembly is connected with an active block in the locking driving assembly; the driving block is rotatably connected with the tray and can rotate around the tray under the action of external force; the driving motor is used for driving the unlocking linkage assembly in the unlocking mechanism to drive the shifting assembly to separate the clamping block from the stopper to be locked.

Furthermore, the clamping assembly comprises a clamping block and a first elastic piece, two ends of the first elastic piece are respectively fixedly connected with the upper part of the clamping block and the tray, and a connecting point of the middle part of the clamping block and the tray in rotating connection is located outside a straight line where the first elastic piece is located. After the design, when the first elastic piece is positioned at one side of a connecting point of the middle part of the clamping block and the tray in rotating connection, the clamping block and the stopper to be locked are locked; when the first elastic piece is positioned on the other side of the connecting point where the middle part of the clamping block is rotatably connected with the tray, the clamping block is separated from the stopper to be locked and unlocked.

Preferably, the first elastic member is a tension spring.

Furthermore, the bottom of the clamping block is rotatably connected with a transition block, a rotating shaft of the transition block is parallel to the stirring pin, and the transition block is positioned on the upper portion or the lower portion of the stirring pin. When the clamping block is clamped with a stopper to be locked, the transition block is positioned above the toggle pin, and the first elastic piece is positioned on one side of a connecting point of the middle part of the clamping block and the tray in rotating connection; when the clamping block and the stopper to be locked are in the process from the clamping state to the separation state, the poking pin can be in contact with the transition block for a period of time, and the transition block is rotationally connected with the clamping block, so the poking pin can be positioned above the transition block after crossing the transition block, and at the moment, the first elastic piece is positioned on the other side of the connecting point where the middle part of the clamping block is rotationally connected with the tray, so that the clamping block and the stopper to be locked are forced to be separated and unlocked.

Furthermore, the locking linkage assembly comprises a poke rod, a poke pin, a sleeve rod and a linkage block, the bottom end of the poke rod is connected with the driving block, and the top end of the poke rod is rotatably connected to the tray; the poke rod is provided with a first limiting hole for limiting one end of the sleeve rod, one end of the sleeve rod is positioned in the first limiting hole, and the other end of the sleeve rod is fixedly connected with the linkage block; one end of the linkage block is rotatably connected to the tray, and the other end of the linkage block is connected with the poking pin. When a door needs to be locked, the driving motor rotates forwards to drive the screw rod to rotate forwards, the screw rod drives the screw rod nut in threaded connection to do linear motion along the screw rod by the forward rotation of the screw rod, so as to drive the door carrying frame fixed with the screw rod nut and the door plate fixed with the door carrying frame to move to one side, when the door carrying frame or a certain part synchronously moving with the door carrying frame moves to extrude the driving block in the locking driving assembly, the driving block is extruded to rotate along the tray to drive the poking rod to rotate, so as to drive the sleeve rod to rotate together with the linkage block, the rotation of the linkage block drives the poking pin to rotate, the poking pin can be contacted with the transition block below the clamping block when rotating to a certain position, the transition block drives the clamping block to rotate around the forward direction of the tray, the rotation of the clamping block enables the first elastic piece to gradually rotate from the side far away from the stopper to be locked, when the straight line where the first elastic piece is located crosses the connecting point between the clamping block and, the clamping block can be clamped on the stopper to be locked, and the transition block is positioned below the left side of the shifting pin and separated from the shifting pin; when the door needs to be opened, the driving motor reversely rotates to drive the unlocking mechanism to unlock the clamping block, the unlocking mechanism separates the clamping block from the stopper to be locked, the unlocking mechanism can force the clamping block to rotate reversely around the tray in the separation process, the rotation of the clamping block enables the straight line of the first elastic piece to cross the rotating connection point between the clamping block and the tray again, and then the first elastic piece can also force the clamping block to rotate reversely, so that the clamping block and the stopper to be locked are separated and unlocked; then, the driving motor continues to rotate reversely to drive the lead screw to rotate, the lead screw nut on the lead screw is driven to move reversely by the rotation of the lead screw, the door carrying frame fixedly connected with the lead screw nut is driven to move reversely with the door plate fixed below the door carrying frame, and the vehicle door is opened. After the door carrying frame or a certain part synchronously moving with the door carrying frame reversely moves to be separated from the driving block, the driving block reversely rotates along the tray under the driving of the second elastic part, the shifting rod is driven to reversely rotate, the shifting rod drives the sleeve rod to reversely rotate, and then the linkage block and the shifting pin are driven to reversely rotate, so that the locking driving assembly and the locking linkage assembly are restored to the initial state, and the transition block is still positioned below the shifting pin and separated from the shifting pin.

Furthermore, the locking driving assembly comprises a driving block and a second elastic piece, the driving block is rotatably connected with the tray through a rotating shaft, one end of the second elastic piece is fixed with the rotating shaft, and the other end of the second elastic piece is fixed with the driving block; when the driving block is extruded by external force, the driving block can rotate around the rotating shaft along the tray. When a door needs to be locked, the driving motor rotates forwards to drive the screw rod to rotate forwards, the screw rod rotates forwards to drive the screw rod nut on the screw rod to do linear motion along the screw rod, so that the door carrying frame fixed with the screw rod nut and the door plate fixed with the door carrying frame are driven to move towards one side, when the door carrying frame or a certain part moving synchronously with the door carrying frame extrudes the driving block in the locking driving assembly, the driving block rotates around the rotating shaft along the forward direction of the tray after being extruded, and the second elastic part is tensioned; when the door needs to be opened, the driving motor drives the lead screw to rotate reversely, the lead screw drives the lead screw nut on the lead screw to move reversely by rotation of the lead screw, and then the door carrying frame fixedly connected with the lead screw nut and the door panel fixed below the door carrying frame are driven to move reversely, and the door is opened. After the door carrying frame or a part synchronously moving with the door carrying frame reversely moves to be separated from the driving block, the driving block reversely rotates along the tray to an initial state under the driving of the second elastic piece.

Furthermore, the locking driving assembly further comprises a guide part, the guide part is rotatably connected with the driving block, and when the driving block is extruded by external force and rotates around the rotating shaft along the tray, the guide part is in direct contact with an object applying the external force. The guide member functions to change sliding friction between the active block and an object to which an external force is applied into rolling friction.

Preferably, the guide member is a roller rotatably connected to the driving block. The active block is indirectly contacted with the object applying the external force through the roller, sliding friction between the active block and the object applying the external force is changed into rolling friction, and friction force between the active block and the object applying the external force is effectively reduced.

Furthermore, a second limiting hole for limiting the poke rod is formed in the driving block, and the bottom end of the poke rod is located in the second limiting hole. No matter the clamping block and the stopper to be locked are in a clamping or separating state, the bottom end of the poke rod is always limited in the second limiting hole.

Preferably, the second elastic element is a torsion spring, the body of the torsion spring is sleeved and fixed on the rotating shaft, and the other end of the torsion spring is fixedly connected with the driving block.

Furthermore, the unlocking linkage assembly comprises a spiral-linear shaft sleeve and a guide shaft, one end of the spiral-linear shaft sleeve is sleeved or embedded on the output shaft of the driving motor, the other end of the spiral-linear shaft sleeve is coaxially sleeved or embedded on the guide shaft, and the guide shaft and the stopper to be locked are coaxially fixed; the guide shaft, the stopper to be locked, the output shaft of the driving motor and the spiral-linear shaft sleeve are coaxially arranged, and the driving motor is used for driving the spiral-linear shaft sleeve to do reciprocating linear or spiral motion along the axis of the spiral-linear shaft sleeve. When the locking block and the stopper to be locked are locked and need to be unlocked, namely a closed door plate needs to be opened, the driving motor drives the spiral-linear shaft sleeve to rotate through the output shaft of the driving motor, and because one end of the two ends of the spiral-linear shaft sleeve is of a spiral structure and the other end of the spiral-linear shaft sleeve is of a linear structure, when the locking stopper is locked by the locking block, the guide shaft coaxially fixed with the locking stopper cannot rotate, so that the spiral-linear shaft sleeve with one end connected with the guide shaft cannot rotate and can only be forced to do short-distance spiral linear movement along the linear structure; when the driving motor drives the spiral-linear shaft sleeve to rotate again after the clamping block is separated from the stopper to be locked, the stopper to be locked can rotate freely at the moment, so that the guide shaft can also rotate freely, namely the spiral-linear shaft sleeve can also rotate freely along with the guide shaft; meanwhile, one end of the spiral-linear shaft sleeve is a spiral structure, and the other end of the spiral-linear shaft sleeve is a linear structure, so that the spiral-linear shaft sleeve can perform linear motion at a certain interval during rotation, the spiral motion is realized by combining the spiral shaft sleeve and the linear shaft sleeve, and the spiral-linear shaft sleeve only performs simple in-situ rotation motion after the stroke of the linear motion is finished.

Furthermore, the spiral-linear shaft sleeve is of a hollow cylindrical structure, the inner wall of one end of the spiral-linear shaft sleeve is provided with spiral teeth A32, and the inner wall of the other end of the spiral-linear shaft sleeve is provided with a plurality of ribs A33 which are distributed circumferentially and are parallel to the central axis of the spiral-linear shaft sleeve; a spiral key A34 or a spline A35 matched with the spiral tooth A32 or the rib A33 is arranged on the outer wall of the output shaft of the driving motor, and a spline B36 or a spiral key B37 matched with the rib A33 or the spiral tooth A32 is arranged on the outer wall of the guide shaft; one end of the spiral-linear shaft sleeve, which is provided with the spiral teeth A32, is sleeved on the spiral key A34 or the spiral key B37, and one end of the rib A33 is sleeved on the spline A35 or the spline B36. When the spiral-linear shaft sleeve is used as a hollow sleeve, the two ends of the spiral-linear shaft sleeve are required to ensure that one end of the spiral-linear shaft sleeve is provided with spiral teeth and the other end of the spiral-linear shaft sleeve is provided with ribs parallel to the central axis of the spiral-linear shaft sleeve, so that when the driving motor drives the spiral-linear shaft sleeve to move through a spiral key or a spline on an output shaft of the driving motor, the spiral-linear shaft sleeve can only be driven to do short-distance spiral linear motion before a guide shaft does not rotate along with a stopper to be locked, and the spiral-linear shaft sleeve drives a shifting rod to move back and forth.

Further, the spiral-linear shaft sleeve is of a solid shaft structure, the outer wall of one end of the spiral-linear shaft sleeve is provided with a spiral key A34, and the outer wall of the other end of the spiral-linear shaft sleeve is provided with a plurality of splines A35 which are distributed circumferentially and are parallel to the central axis of the spiral-linear shaft sleeve; the inner wall of the output shaft of the driving motor is provided with spiral teeth A32 or ribs A33 matched with the spiral key A34 or the spline A35, and the inner wall of the guide shaft is provided with ribs B38 or spiral teeth B39 matched with the spline A35 or the spiral key A34; the end of the spiral-straight shaft sleeve with the spiral key A34 is nested in the spiral tooth A32 or the spiral tooth B39, and the end with the spline A35 is nested in the rib A33 or the rib B38. When the spiral-linear shaft sleeve is used as a shaft, two ends of the spiral-linear shaft sleeve are required to ensure that one end of the spiral-linear shaft sleeve is a spiral key and the other end of the spiral-linear shaft sleeve is a spline parallel to the central axis of the spiral-linear shaft sleeve, so that when the driving motor drives the spiral-linear shaft sleeve to move through spiral teeth or ribs on an output shaft of the driving motor, the spiral-linear shaft sleeve can only be driven to do short-distance spiral linear motion before a guide shaft does not rotate along with a stopper to be locked, and the spiral-linear shaft sleeve drives a poking rod to move back and forth, thereby realizing the purpose.

Furthermore, one end of the spiral-linear shaft sleeve is of a hollow cylindrical structure, the other end of the spiral-linear shaft sleeve is of a solid shaft structure, the inner wall of one end with the hollow cylindrical structure is provided with spiral teeth A32 or a plurality of ribs A33 which are distributed circumferentially and are parallel to the central axis of the hollow cylindrical structure, and one end with the solid shaft structure is provided with a spline A35 or a spiral key A34; the outer wall of the output shaft of the driving motor is provided with a spiral key B37 or a spline B36 matched with the spiral tooth A32 or the rib A33, and the inner wall of the guide shaft is provided with a rib B38 or a spiral tooth B39 matched with the spline A35 or the spiral key A34; one end of the spiral-linear shaft sleeve with a hollow structure is sleeved on the output shaft for driving the motor, and the other end with a solid shaft structure is nested in the guide shaft; or the inner wall of the output shaft of the driving motor is provided with ribs C40 or spiral teeth C42 matched with the spline A35 or the spiral key A34; the outer wall of the guide shaft is provided with a spiral key C41 or a spline C43 which is matched with the spiral teeth A32 or the ribs A33; one end of the spiral-linear shaft sleeve with a hollow structure is nested in the output shaft for driving the motor, and one end with a solid shaft structure is nested on the guide shaft. When one end of the spiral-linear shaft sleeve is used as a shaft and the other end of the spiral-linear shaft sleeve is used as a sleeve, the two ends of the spiral-linear shaft sleeve are required to ensure that one end of the spiral-linear shaft sleeve is provided with a spiral tooth or spiral key structure and the other end of the spiral-linear shaft sleeve is provided with a linear spline or rib structure, so that when the driving motor drives the spiral-linear shaft sleeve to move through the spiral tooth or rib on the output shaft of the driving motor, the spiral-linear shaft sleeve can only be driven to do short-distance spiral linear motion before the guide shaft does not rotate along with the stopper to be locked, and the spiral-linear shaft sleeve drives the poking rod.

Further, a first buffer member is sleeved between the spiral-linear shaft sleeve and the output shaft of the driving motor, and/or a second buffer member is sleeved between the spiral-linear shaft sleeve and the guide shaft. The first buffer piece and/or the second buffer piece are arranged to limit and fix the position of the spiral-linear shaft sleeve, so that the spiral-linear shaft sleeve is prevented from moving left and right between the output shaft and the guide shaft of the driving motor to influence the unlocking effect.

Preferably, the first and/or second dampener is a spring.

Furthermore, the poking assembly comprises a poking rod and a third elastic piece, the middle part of the poking rod is rotatably connected with the tray, the front end of the poking rod is a free end, and the tail end of the poking rod is rotatably connected with the spiral-linear shaft sleeve; the two ends of the third elastic piece are respectively fixedly connected with the front end of the shifting lever and the tray, and a connecting point of the middle of the shifting lever and the tray in rotating connection is located outside a straight line where the third elastic piece is located. When the door plate needs to be opened and closed, the driving motor reversely rotates to drive the spiral-linear shaft sleeve to move towards the direction close to the clamping block, the spiral-linear shaft sleeve can drive the tail end of the shifting rod to rotate, so that the middle part of the shifting rod rotates around the tray, the front end of the shifting rod which is not in contact with the clamping block gradually rotates towards the direction close to the clamping block, and meanwhile, the third elastic piece is also close to the rotating connection point of the middle part close to the shifting rod and the tray; along with the movement of the spiral-linear shaft sleeve, the front end of the shifting rod is in contact with the clamping block and separates and unlocks the clamping block and the to-be-locked stopper, after the third elastic piece crosses the middle part of the shifting rod and the rotating connection point of the tray, the shifting rod completely separates and unlocks the clamping block and the to-be-locked stopper, the first elastic piece is also positioned at one side, away from the to-be-locked stopper, of the rotating connection point of the middle part of the clamping block and the tray, and even if the shifting rod is separated from the clamping block at the moment, the clamping block cannot rotate back to the clamping contact state of the to-be-locked stopper again due to the existence of the first elastic piece, so that the door lock clutch device is opened, and the screw is driven to rotate forwards along with the continuous reverse rotation of the driving motor, the screw nut is driven; when the door plate to be opened needs to be closed, the driving motor rotates forwards, the lead screw rotates forwards to drive the lead screw nut, the door carrying frame and the door plate to move forwards, meanwhile, the driving motor also rotates forwards to drive the spiral-linear shaft sleeve to move forwards and spirally and linearly, so that the driving lever is separated from the clamping block, and the driving lever rotates in situ after the spiral-linear shaft sleeve moves forwards to the initial position; when the door carrying frame or a part synchronously moving with the door carrying frame moves forwards to the driving block extruded to the locking driving assembly, the locking driving assembly locks the clamping block in the clamping assembly on the locking stopper through the locking linkage assembly to realize the closing and locking of the door panel; then the driving motor stops driving, the spiral-linear shaft sleeve also stops rotating, and the next unlocking action is waited.

Preferably, the third elastic member is a tension spring.

Preferably, the stopper to be locked is a ratchet wheel, and the upper part of the clamping block is provided with a pawl; when the pawl is meshed with the ratchet wheel, the clamping block is clamped with the stopper to be locked, and when the pawl is separated from the ratchet wheel, the clamping block is separated from the stopper to be locked.

Has the advantages that: when the door plate to be opened needs to be closed, the driving motor rotates forwards to drive the lead screw to rotate forwards, the lead screw rotates forwards to drive the lead screw nut in threaded connection with the lead screw nut to do linear motion along the lead screw, so that the door carrying frame fixedly connected with the lead screw nut and the door plate fixed at the lower part of the door carrying frame are driven to move towards one side, when the door carrying frame or a certain part synchronously moving with the door carrying frame moves to the main driving block in the extrusion locking driving assembly, the main driving block is extruded to rotate along the tray to drive the poking rod to rotate, the poking rod pokes the clamping block in the clamping assembly to rotate around the tray, and when the clamping block rotates to a certain angle, the upper part of the clamping block is locked and locked with the stopper to be; when the door needs to be unlocked, the driving motor rotates reversely to drive the unlocking linkage assembly to drive the stirring assembly to separate the clamping block from the stopper to be locked, then the driving motor continues to rotate reversely to drive the lead screw to rotate, the lead screw nut on the lead screw is driven to move reversely by rotation of the lead screw, then the door carrying frame fixedly connected with the lead screw nut is driven to move reversely with the door panel fixed below the door carrying frame, and the door is opened. In the invention, the to-be-locked stopper can only rotate clockwise and can not rotate reversely after being clamped by the clamping block, so when the clamping block is clamped on the to-be-locked stopper, the to-be-locked stopper can not rotate reversely due to vibration and the like, and when the to-be-locked stopper rotates clockwise due to vibration, bumping and the like, the door lock clutch device can tightly lock the door lock, so that the clamping block and the to-be-locked stopper are always in a clamping state; in practical application, the door lock clutch device is generally fixed on a bus door, a subway door or a high-speed railway door and the like, and is relatively static with the door, so that the door lock clutch device can effectively prevent the locked door from being automatically opened due to vibration in the driving process; it is also for the above reasons that the door equipped with the present door lock clutch device can be closed better.

The process also shows that the locking and unlocking of the door lock clutch device and the opening or closing of the door panel share one driving motor, so that the locked door can be effectively prevented from being automatically opened in bumpy operation, and the locked door has good tightness; simple structure, mechanism reasonable in design can effectively reduce stopper sliding door's cost.

Drawings

FIG. 1 is a schematic view of the overall structure of the door lock clutch device when closed;

FIG. 2 is a schematic view of the overall structure of the door lock clutch device when it is opened;

FIG. 3 is a schematic perspective view of a spiral-linear bushing;

FIG. 4 is a front view of FIG. 3;

FIG. 5 is a cross-sectional view taken along plane A-A of FIG. 4;

FIG. 6 is a schematic perspective view of a spiral-linear bushing;

FIG. 7 is a front view of FIG. 6;

FIG. 8 is a cross-sectional view taken along plane A-A of FIG. 7;

FIG. 9 is a front view of a spiral-linear bushing;

FIG. 10 is a cross-sectional view taken along plane A-A of FIG. 9;

FIG. 11 is a front view of a spiral-linear bushing;

FIG. 12 is a cross-sectional view taken along plane A-A of FIG. 11;

FIG. 13 is a front view of a spiral-linear bushing;

FIG. 14 is a cross-sectional view taken along plane A-A of FIG. 13;

FIG. 15 is a front view of a spiral-linear bushing;

FIG. 16 is a cross-sectional view taken along plane A-A of FIG. 15;

FIG. 17 is a front view of a spiral-linear bushing;

FIG. 18 is a cross-sectional view taken along plane A-A of FIG. 17;

FIG. 19 is a front view of the spiral-linear bushing;

fig. 20 is a cross-sectional view taken along plane a-a of fig. 19.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.