Passenger car folding door drive device

Abstract

The present invention discloses a folding door driving device for a passenger car, comprising a pull rod assembly, the pull rod assembly is connected to a transmission assembly, the transmission assembly is connected to a control assembly, and the control assembly can control the opening and closing of the folding door; the control assembly comprises a first connecting arm, the first connecting arm is connected to a first rotating bearing, the first rotating bearing is fixed in the vehicle body, the first connecting arm can rotate around the first rotating bearing, one end of the first connecting arm is connected to the transmission assembly, the other end is hinged to a second connecting arm, one end of the second connecting arm is connected to a second rotating bearing, the second rotating bearing is fixed in the vehicle body, the second connecting arm can rotate around the second rotating bearing, the other end of the second connecting arm is hinged to one end of a third connecting arm, and the other end of the third connecting arm is hinged to the folding door. The folding door driving device for a passenger car of the present invention adopts a pure mechanical structure, uses wire drawing to transmit force, has reliable action, is not easy to damage, and is easy to maintain.

Description

Technical Field

[0001] The invention relates to a driving device, in particular to a driving device for a folding door of a passenger car. Background Art

[0002] Folding doors are mainly used in buses to facilitate passengers to get on and off the bus. The bus folding door drive device is a device that provides power for the folding door when opening / closing. At present, the commonly used bus folding door drive devices in China mainly include: electric switch devices, pneumatic switch devices and traditional manual zipper switch devices.

[0003] Electric switch device: Generally, by giving instructions, the motor works, driving the spur gear, the spur gear drives the worm gear, the worm gear drives the worm, etc., so that the door can be opened and closed; this switch device has a complex structure and is inconvenient to maintain. When a fault occurs, the door cannot be effectively opened, which has an adverse effect on passenger safety.

[0004] The working principle of the pneumatic switch device: the driver presses the switch, the solenoid valve is energized, the air circuit is connected, the air pump takes in air, and the car door opens; the air pump exhausts air and the car door closes; because the car door is opened and closed frequently, it is easy to break, inconvenient to maintain, and has poor safety and many other inconveniences.

[0005] Traditional manual lock switch device: by pulling the door handle, the lock tongue retracts, the door lock is unlocked, and the door opens; this device is inconvenient to operate, and is prone to automatically pop open during driving, which has poor safety.

[0006] In summary, it is necessary to design a bus folding door drive device with high reliability and convenient maintenance. Summary of the invention

[0007] The present invention provides a passenger car folding door driving device, which has the effects of high reliability and convenient maintenance. The specific technical scheme is as follows:

[0008] A passenger car folding door drive device, which includes a pull rod assembly, the pull rod assembly is connected to a transmission assembly, the transmission assembly is connected to a control assembly, and the control assembly can control the opening and closing of the folding door; the control assembly includes a first connecting arm, the first connecting arm is connected to a first rotating bearing, the first rotating bearing is fixed in the vehicle body, the first connecting arm can rotate around the first rotating bearing, one end of the first connecting arm is connected to the transmission assembly, and the other end is hinged to a second connecting arm, one end of the second connecting arm is connected to a second rotating bearing, the second rotating bearing is fixed in the vehicle body, the second connecting arm can rotate around the second rotating bearing, the other end of the second connecting arm is hinged to one end of a third connecting arm, and the other end of the third connecting arm is hinged to the folding door.

[0009] Furthermore, the second connecting arm includes a first connecting part, a transition plate and a second connecting part connected in sequence, one end of the first connecting part is connected to the second rotating bearing, and one end of the second connecting part is hinged to the third connecting arm; the transition plate is obliquely arranged in the vertical direction so that the height of the second connecting part is lower than the first connecting part, so as to avoid interference between the third connecting arm and the first connecting arm.

[0010] Furthermore, the first connecting arm is connected to one end of the first connecting part close to the transition plate, and one end of the transition plate connected to the first connecting part is bent in the horizontal direction toward the first connecting arm, so that the first connecting arm can more easily drive the second connecting arm to rotate.

[0011] Furthermore, the first connecting arm is hinged to one end of the auxiliary arm, and the other end of the auxiliary arm is hinged to one end of the first connecting portion close to the transition plate. The auxiliary arm can increase the rotation angle of the second connecting arm.

[0012] Furthermore, the pull rod assembly includes an operating rod, which is movably arranged on the chassis, one end of which is provided with a handle, and the other end of the operating rod is connected to the transmission assembly. The opening and closing of the folding door can be controlled by pushing the operating rod.

[0013] Furthermore, the pull rod assembly also includes an ear plate and a support rod. A connecting hole is provided on the operating rod, the shape of the connecting hole matches the support rod, the rod body of the support rod is accommodated in the connecting hole of the operating rod, the two ends of the support rod are respectively connected to one end of an ear plate, and the other end of the ear plate is connected to the bus chassis, and the operating rod can rotate around the support rod.

[0014] Furthermore, the ear plate is L-shaped, and the L-shaped ear plate includes a horizontal end and a vertical end. The two ends of the support rod are connected to the vertical end. The vertical ends of the two ear plates are arranged in parallel to form a movable channel of the operating rod, and the operating rod can move in the movable channel; the horizontal end of the ear plate is fixedly connected to the automobile chassis to achieve the fixation of the ear plate.

[0015] Furthermore, the transmission assembly includes a wire, one end of which is connected to an end of the operating rod away from the handle, and the other end of the wire is connected to the control assembly. The operating rod moves to contract / stretch the wire to control the closing and opening of the folding door.

[0016] Furthermore, the transmission assembly also includes a first guide tube and a second guide tube, which are fixed in the vehicle body, and the wire drawing is arranged to pass through the first guide tube and the second guide tube to limit and guide the wire drawing.

[0017] Furthermore, a first return spring is arranged between the second guide tube and the control assembly, and a second return spring is arranged on the outer sleeve of the second rotary bearing.

[0018] The bus folding door driving device of the present invention has a compact structure, ingenious design and is easy to operate. It adopts a purely mechanical structure, has reliable operation, is not easy to damage, and is easy to maintain. By pushing the operating rod, using wire drawing to transmit force, and using multiple connecting arms for linkage, it does not require pneumatic or electric devices, saves energy, and has low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A top view of the passenger car folding door driving device of the present invention;

[0020] Figure 2 It is a front view of the passenger car folding door driving device of the present invention;

[0021] Figure 3 A three-dimensional diagram of a control assembly of a passenger car folding door driving device according to the present invention;

[0022] Figure 4 A perspective view of a second connecting arm of a folding door driving device for a passenger car according to the present invention;

[0023] Figure 5 The figure is a top view of the second connecting arm of the passenger car folding door driving device of the present invention.

[0024] In the figure: pull rod assembly-1, operating rod-11, ear plate-12, support rod-13, transmission assembly-2, wire drawing-21, first guide tube-22, second guide tube-23, control assembly-3, first connecting arm-31, first connecting part-331, transition plate-332, second connecting part-333, first rotating bearing-32, second connecting arm-33, second rotating bearing-34, second return spring-35, third connecting arm-36, auxiliary arm-37, first return spring-4, first folding door-51, second folding door-52, first door shaft-61, second door shaft-62. DETAILED DESCRIPTION

[0025] In order to better understand the purpose, function and specific design scheme of the present invention, the passenger car folding door driving device of the present invention is further described in detail below in conjunction with the accompanying drawings.

[0026] like Figure 1 As shown, the bus folding door driving device of the present invention includes a pull rod assembly, the pull rod assembly 1 is connected to the transmission assembly 2, the transmission assembly 2 is connected to the control assembly 3, and the control assembly 3 can control the opening and closing of the folding door.

[0027] Specifically, if Figure 2As shown, the pull rod assembly 1 is arranged next to the driver's seat to facilitate the driver's operation. The pull rod assembly 1 includes an operating rod 11, which is movably arranged on the chassis of the bus. A handle is arranged at one end of the operating rod 11, and the other end of the operating rod 11 is connected to the transmission assembly 2. The opening and closing of the folding door can be controlled by pushing the operating rod 11.

[0028] like Figure 2 As shown, the tie rod assembly 1 also includes an ear plate 12 and a support rod 13. A connection hole is provided on the operating rod 11. The shape of the connection hole matches the support rod 13. The rod body of the support rod 13 is accommodated in the connection hole of the operating rod 11. The two ends of the support rod 13 are respectively connected to one end of an ear plate 12. The other end of the ear plate 12 is connected to the chassis of the bus. The operating rod 11 can rotate around the support rod 13. The ear plate 12 of this embodiment is L-shaped. The L-shaped ear plate 12 includes a horizontal end and a vertical end. The two ends of the support rod 13 are connected to the vertical end. The vertical ends of the two ear plates 12 are arranged in parallel to form a movable channel for the operating rod 11. The operating rod 11 can move in the movable channel; the horizontal end of the ear plate 12 is fixedly connected to the chassis of the car to achieve the fixation of the ear plate 12.

[0029] The transmission assembly 2 includes a wire drawing, one end of which is connected to the end of the operating rod 11 away from the handle. The wire drawing 21 of this embodiment is wound on the operating rod 11 to achieve the connection between the wire drawing 21 and the operating rod 11, and the other end of the wire drawing 21 is connected to the control assembly 3. The operating rod 11 moves to shrink / stretch the wire drawing 21 to control the closing and opening of the folding door. The transmission assembly 2 also includes a first guide tube 22 and a second guide tube 23, which are fixed in the vehicle body. The wire drawing 21 passes through the first guide tube 22 and the second guide tube 23 to limit and guide the wire drawing 21. Preferably, a first return spring 4 is arranged between the second guide tube 23 and the control assembly 3, one end of the first return spring 4 is connected to the second guide tube 23, and the other end is connected to the control assembly 3, and the first return spring 4 is sleeved on the outside of the wire drawing 21. The wire drawing 21 of this embodiment is made of steel wire.

[0030] like Figure 2 and Figure 3The control assembly 3 includes a first connecting arm 31, which is connected to a first rotating bearing 32, which is fixed in the vehicle body. The first connecting arm 31 can rotate around the first rotating bearing 32. One end of the first connecting arm 31 is connected to the wire drawing 21, and the other end is hinged to a second connecting arm 33, one end of the second connecting arm 33 is connected to a second rotating bearing 34, which is fixed in the vehicle body. The second connecting arm 33 can rotate around the second rotating bearing 34. It is worth noting that a second return spring 35 is provided on the outer sleeve of the second rotating bearing 34, and the second return spring 35 is a torsion spring. The other end of the second connecting arm 33 is hinged to one end of a third connecting arm 36, and the other end of the third connecting arm 36 is hinged to the folding door.

[0031] like Figure 4 and Figure 5 As shown, the second connecting arm 33 includes a first connecting portion 331, a transition plate 332 and a second connecting portion 333 which are connected in sequence. One end of the first connecting portion 331 is connected to the second rotating bearing 34, and one end of the second connecting portion 333 is hinged to the third connecting arm 36. The transition plate 332 is arranged obliquely in the vertical direction so that the height of the second connecting portion 333 is lower than the first connecting portion 331, so as to avoid interference between the third connecting arm 36 and the first connecting arm 31. It is worth noting that the first connecting arm 31 is connected to one end of the first connecting portion 331 close to the transition plate 332, and one end of the transition plate 332 connected to the first connecting portion 331 is bent in the horizontal direction toward the direction close to the first connecting arm 31, so that the first connecting arm 31 can drive the second connecting arm 33 to rotate more easily.

[0032] Preferably, the first connecting arm 31 is hinged to one end of the auxiliary arm 37, and the other end of the auxiliary arm 37 is hinged to one end of the first connecting portion 331 close to the transition plate 332. The auxiliary arm 37 can increase the rotation angle of the second connecting arm 33, thereby increasing the moving range of the third connecting arm 36 to make the folding door easier to open / close.

[0033] Preferably, the control assembly 3 is accommodated in the control cover, the control cover is fixedly connected to the vehicle body, and the first rotary bearing 32 and the second rotary bearing 34 are fixedly connected to the control. The control cover can protect the control assembly 3 and also prevent passengers from accidentally stepping on the control assembly 3 and causing injuries.

[0034] The folding door includes a first folding door 51 and a second folding door 52. The first folding door 51 and the second folding door 52 are hinged via a first door axis 61. The first folding door 51 and the vehicle body are hinged via the second door axis 62. One end of the second folding door 52 away from the first door axis 61 is slidably connected to the vehicle body. Specifically, a guide rail is provided at the top and / or bottom of the door frame, and one end of the second folding door 52 away from the first door axis 61 is connected to the guide rail. One end of the second folding door 52 away from the first door axis 61 can slide in the guide rail.

[0035] like Figure 1 As shown, the folding door is in the open state (i.e., the folding state) at this time. When the folding door needs to be closed, the operating rod 11 is pushed backward, and the operating rod 11 rotates around the support rod 13 and pulls the wire drawing 21 to contract. The contraction of the wire drawing 21 drives the first connecting arm 31 to rotate clockwise around the first rotating bearing 32. At the same time, the first return spring 4 is changed from a natural state to a compressed state, and elastic potential energy is accumulated; the first connecting arm 31 drives the second connecting arm 33 to rotate counterclockwise around the second rotating bearing 34 through the auxiliary arm 37, and at the same time, the second return spring 35 is changed from a natural state to an unnatural state, and elastic potential energy is accumulated; the second connecting arm 33 drives the third connecting arm 36 to rotate clockwise around the end of the second connecting arm 33 connected to the third connecting arm 36, thereby driving the first folding door 51 to rotate clockwise around the second door shaft 62, and at the same time, the second folding door 52 rotates counterclockwise around the first door shaft 61, and the end of the second folding door 52 away from the first door shaft 61 slides in a direction away from the second door shaft 62 to realize the closing of the folding door (i.e., the folding door is in the extended state).

[0036] It is worth noting that a limit assembly 7 is also provided at the position of the ear plate 12. When the operating rod 11 is pushed backward, the operating rod 11 can be engaged with the limit assembly 7, and the limit assembly 7 can prevent the operating rod 11 from resetting to ensure that the door is closed. The limit assembly 7 of this embodiment is a hook. When the operating rod 11 is pushed backward, the operating rod 11 is clamped in the hook to prevent the operating rod 11 from resetting. It can be understood that the limit assembly 7 can also use other structures as long as the limit of the operating rod 11 can be achieved. For example, the limit assembly 7 can also use an existing latch to push the operating rod 11 backward. After the door is closed, the latch is pushed out to block the operating rod 11 to prevent the operating rod 11 from resetting.

[0037] When the folding door needs to be opened, the limit on the operating rod 11 is cancelled (i.e., the operating rod 11 is moved out of the hook, or the pin is retracted). At this time, the first return spring 4 and the second return spring 35 release elastic potential energy and change from a compressed state to a natural state; driven by the first return spring 4, the operating rod 11 is reset, and the first connecting arm 31 rotates counterclockwise around the first rotating bearing 32; at the same time, driven by the second return spring 35, the second connecting arm 33 rotates clockwise around the second rotating bearing 34, and the second connecting arm 33 drives the third connecting arm 36 to rotate counterclockwise around the end of the second connecting arm 33 connected to the third connecting arm 36, thereby driving the first folding door 51 to rotate counterclockwise around the second door shaft 62, and at the same time, the second folding door 52 rotates clockwise around the first door shaft 61, and the end of the second folding door 52 away from the first door shaft 61 slides in the direction close to the second door shaft 62 to realize the opening of the folding door (i.e., the folding state of the folding door).

[0038] The bus folding door driving device of the present invention has a compact structure, ingenious design and is easy to operate. It adopts a purely mechanical structure, has reliable operation, is not easy to damage, and is easy to maintain. By pushing the operating rod, using wire drawing to transmit force, and using multiple connecting arms for linkage, it does not require pneumatic or electric devices, saves energy, and has low cost.

[0039] The present invention is further described above with the aid of specific embodiments. However, it should be understood that the specific description here should not be construed as limiting the essence and scope of the present invention. Various modifications made to the above embodiments by ordinary technicians in the field after reading this specification are all within the scope of protection of the present invention.

Claims

1. A passenger car folding door driving device, characterized in that: The invention comprises a pull rod assembly, the pull rod assembly is connected to a transmission assembly, the transmission assembly is connected to a control assembly, and the control assembly can control the opening and closing of the folding door; the control assembly comprises a first connecting arm, the first connecting arm is connected to a first rotating bearing, the first rotating bearing is fixed in the vehicle body, the first connecting arm can rotate around the first rotating bearing, one end of the first connecting arm is connected to the transmission assembly, and the other end is hinged to a second connecting arm, one end of the second connecting arm is connected to a second rotating bearing, the second rotating bearing is fixed in the vehicle body, the second connecting arm can rotate around the second rotating bearing, the other end of the second connecting arm is hinged to one end of a third connecting arm, and the other end of the third connecting arm is hinged to the folding door; The pull rod assembly includes an operating rod, which is movably arranged on the chassis, one end of which is provided with a handle, and the other end of which is connected to the transmission assembly. The folding door can be opened and closed by pushing the operating rod; The tie rod assembly also includes an ear plate; A limit assembly is also provided at the position of the ear plate. When the operating rod is pushed backward, the operating rod can be engaged with the limit assembly, and the limit assembly can prevent the operating rod from being reset to ensure that the door is closed. The transmission assembly includes a wire, one end of which is connected to an end of the operating rod away from the handle, and the other end of the wire is connected to the control assembly. The operating rod moves to contract / stretch the wire to control the closing and opening of the folding door. The transmission assembly also includes a first guide tube and a second guide tube, the first guide tube and the second guide tube are fixed in the vehicle body, and the wire drawing passes through the first guide tube and the second guide tube to limit and guide the wire drawing; A first return spring is arranged between the second guide tube and the control assembly, and a second return spring is arranged on the outer sleeve of the second rotary bearing.

2. The passenger car folding door driving device according to claim 1, characterized in that: The second connecting arm includes a first connecting part, a transition plate and a second connecting part connected in sequence, one end of the first connecting part is connected to the second rotating bearing, and one end of the second connecting part is hinged to the third connecting arm; the transition plate is obliquely arranged in the vertical direction so that the height of the second connecting part is lower than the first connecting part, so as to avoid interference between the third connecting arm and the first connecting arm.

3. The passenger car folding door driving device according to claim 2, characterized in that: The first connecting arm is connected to one end of the first connecting part close to the transition plate, and one end of the transition plate connected to the first connecting part is bent in the horizontal direction toward the first connecting arm, so that the first connecting arm can more easily drive the second connecting arm to rotate.

4. The passenger car folding door driving device according to claim 3, characterized in that: The first connecting arm is hinged to one end of the auxiliary arm, and the other end of the auxiliary arm is hinged to one end of the first connecting part close to the transition plate. The auxiliary arm can increase the rotation angle of the second connecting arm.

5. The passenger car folding door driving device according to claim 1, characterized in that: The pull rod assembly also includes a support rod, an operating rod is provided with a connecting hole, the shape of the connecting hole matches the support rod, the rod body of the support rod is accommodated in the connecting hole of the operating rod, the two ends of the support rod are respectively connected to one end of an ear plate, the other end of the ear plate is connected to the bus chassis, and the operating rod can rotate around the support rod.

6. The passenger car folding door driving device according to claim 5, characterized in that: The ear plate is L-shaped, and the L-shaped ear plate includes a horizontal end and a vertical end. The two ends of the support rod are connected to the vertical end. The vertical ends of the two ear plates are arranged in parallel to form a movable channel for the operating rod, and the operating rod can move in the movable channel; the horizontal end of the ear plate is fixedly connected to the automobile chassis to achieve the fixation of the ear plate.

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