An electric sliding plug door for public transportation vehicles

Abstract

The invention discloses an electric plug door for a public bus, comprising a frame, side hangers are correspondingly arranged at the left and right ends of the frame, and a motor is arranged on the side hangers; a screw rod is arranged between the left and right side hangers, the screw rod and the motor are rotationally connected by a synchronous wheel and a synchronous belt, the screw rod is rotationally connected with left and right opposite driving components, the motor drives the screw rod to rotate, and the screw rod drives the driving components to move towards or oppositely at the same time, straight slots are opened on the side hangers, synchronous rods are arranged between the straight slots, and the synchronous rods are slidingly connected with a locking component, the driving component drives the locking component to first perform an arc motion combining longitudinal and transverse motion and then perform longitudinal motion, the locking component opens and closes the door, the original transmission mode is changed and the door is opened and closed by a dual active drive component, the stability of the opening and closing of the door is ensured, an intermediate frame is added to increase the rigidity of the plug door, and the synchronous rod is ensured to move synchronously along the straight slot to improve the quietness during operation; adding a guide component can ensure that the plug door moves along a planned trajectory.

Description

Technical Field

[0001] The invention relates to a bus door, in particular to an electric plug sliding door used for a bus. Background Art

[0002] In recent years, with the rapid development of driverless technology, driverless buses have become the new favorite of major vehicle manufacturers. Driverless buses are mostly battery-driven. Therefore, in the actual design process, the body needs to be lightweight to increase the mileage. The working principle of the bus door is: the lateral movement is the movement of the linear bearing in the slide on the long guide column, and the longitudinal movement is the movement of the self-aligning bearing in the left and right brackets. In its structure, only the left door has a locking component, and the right door is linked by a belt. When the belt is loose, the right door cannot be closed or opened completely during operation, or even cannot be closed or opened. Summary of the invention

[0003] Purpose of the invention: The purpose of the present invention is to provide an electric sliding plug door for public buses, to solve the problems arising from the operation of the above-mentioned load-bearing drive mechanism, and to achieve operational stability of the electric sliding plug door for public buses.

[0004] Technical solution: The electric plug sliding door for public transportation vehicles described in the present invention includes a frame, side hangers are correspondingly arranged at the left and right ends of the frame, and a motor is arranged on the side hanger; a screw rod is arranged between the left and right side hangers, the screw rod and the motor are rotationally connected by a synchronous wheel and a synchronous belt, the screw rod is rotationally connected to left and right opposite driving components, the motor drives the screw rod to rotate, and the screw rod drives the driving components to move in opposite directions or toward each other at the same time, the side hangers are opened with straight slots, and a synchronous rod is arranged between the straight slots, the synchronous rod is slidably connected with a locking component, the driving component drives the locking component to first perform a longitudinal and transverse combined arc motion and then perform a longitudinal motion, and the locking component opens and closes the door.

[0005] Furthermore, the driving assembly includes a nut, a nut sleeve and an arc plate which are rotationally connected to the screw rod. The nut is rotationally connected to the screw rod, the nut sleeve is nested on the nut, and the two are meshed with each other, and the nut sleeve and the arc plate are hinged to each other.

[0006] Furthermore, a support ear with a pin hole is arranged on the circumferential outer wall of the nut sleeve, and the support ear is hinged to the arc plate through the pin.

[0007] Furthermore, the locking assembly includes a bracket hinged to the arc plate, a sleeve, a sliding ring fixedly connected to the sleeve and slidably connected to the synchronization rod, and a support plate for connecting the vehicle door; the sleeve is fixed between the bracket and the support plate, and the bracket and the support plate are fixedly connected.

[0008] Furthermore, a limiting column is arranged on the sleeve, and a rubber sleeve is arranged on the limiting column, and the limiting column is used to prevent the sleeve from squeezing the side hanger.

[0009] Furthermore, the straight slot is slidably connected with a deep groove ball bearing, and the deep groove ball bearing is nested on the outer wall of the synchronization rod.

[0010] Furthermore, an intermediate frame with straight slots is provided on the frame body between the side hanging frames, and the intermediate frame is used to support the synchronization rod.

[0011] Furthermore, limiting plates are provided on both ends of the synchronization rod to prevent the synchronization rod from falling off from the straight slot.

[0012] Furthermore, a guide assembly is provided on the frame and between the brackets, and the guide assembly includes a guide wheel provided on the bracket and a guide shell provided on the frame, wherein the guide wheel moves along the guide shell, and the guide shell includes an arc guide shell for providing an arc motion combining longitudinal and transverse motion and a linear guide shell for providing longitudinal motion.

[0013] Beneficial effects: Compared with the prior art, the present invention changes the original transmission mode and uses a dual active drive component to open and close the door, thereby ensuring the stability of the door opening and closing, adding an intermediate frame to increase the rigidity of the Sierra door, ensuring that the synchronization rod moves synchronously along the straight slot to improve the quietness during operation; adding a guide component can ensure that the Sierra door moves along a planned trajectory. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of an electric sliding plug door for public transportation vehicles. Figure 1 ;

[0015] Figure 2 yes Figure 1 AA section view;

[0016] Figure 3 This is a schematic diagram of the structure of an electric sliding plug door for public transportation vehicles. Figure 2 . DETAILED DESCRIPTION

[0017] like Figure 1 As shown, an electric plug sliding door for a public bus comprises a frame 1, side hangers 2 are correspondingly arranged at the left and right ends of the frame 1, and a motor 3 is arranged on the side hanger 2; a screw rod 4 is arranged between the left and right side hangers 2, the screw rod 4 and the motor 3 are rotationally connected by a synchronous wheel and a synchronous belt, the screw rod 4 is rotationally connected to left and right opposite driving components 5, the motor 3 drives the screw rod 4 to rotate, and the screw rod 4 drives the driving components 5 to move in the same direction or opposite directions at the same time, the side hangers 2 are provided with straight slots 6, a synchronous rod 7 is arranged between the straight slots 6, the synchronous rod 7 is slidably connected with a locking component 8, the driving component 5 drives the locking component 8 to first perform an arc motion combining longitudinal and transverse motion and then perform a longitudinal motion, and the locking component 8 opens and closes the door.

[0018] like Figures 1 to 3 As shown, the driving assembly 5 includes a nut 51, a nut sleeve 52 and an arc plate 53 which are rotatably connected to the screw rod 4. The nut 51 is rotatably connected to the screw rod 4, the nut sleeve 52 is nested on the nut 51, and the two are meshed with each other, and the nut sleeve 52 and the arc plate 53 are hinged to each other.

[0019] A support ear 9 with a pin hole is provided on the circumferential outer wall of the nut sleeve 52, and the support ear 9 is hinged to the arc plate 53 via a pin.

[0020] The locking assembly 8 includes a bracket 81 hinged to the arc plate 53, a sleeve 82, a sliding ring 83 fixedly connected to the sleeve 82 and slidably connected to the synchronization rod 7, and a support plate 84 for connecting to the vehicle door; the sleeve 82 is fixed between the bracket 81 and the support plate 84, and the bracket 81 and the support plate 84 are fixedly connected.

[0021] A limiting column 13 is arranged on the sleeve 82 , and a rubber sleeve is arranged on the limiting column 13 . The limiting column is used to prevent the sleeve 82 from squeezing the side hanger 2 .

[0022] The straight slot 6 is slidably connected with a deep groove ball bearing 10 , which is nested on the outer wall of the synchronization rod 7 .

[0023] An intermediate frame 11 with a straight slot 6 is provided on the frame body 1 between the side hangers 2 , and the intermediate frame 11 is used to support the synchronization rod 7 .

[0024] Limiting plates 12 are provided on both ends of the synchronization rod 7 to prevent the synchronization rod 7 from falling off the straight slot 6 .

[0025] A guide assembly 14 is provided on the frame 1 and between the bracket 81, and the guide assembly 14 includes a guide wheel 141 provided on the bracket 81 and a guide shell 142 provided on the frame 1, wherein the guide wheel 141 moves along the guide shell 142, and the guide shell 142 includes an arc guide shell 142 for providing an arc motion combining longitudinal and transverse motion and a linear guide shell 142 for providing longitudinal motion.

[0026] Working principle: the driver starts the door controller by pressing a button, and the door controller controls the motor 3 to rotate forward or reverse within a certain period of time. The motor 3 rotates forward, the screw rod 4 rotates under the drive of the motor 3, the nut 51 moves under the drive of the screw rod 4, and the nut 51 drives the nut sleeve 52 to rotate. Since the arc plate 53 is hinged to the nut sleeve 52 and the bracket 81 respectively, the nut sleeve 52 moves the arc plate 53 laterally by rotating, and the arc plate 53 pushes the bracket 81 to move laterally, and the bracket 81 pushes the synchronization rod 7 to move laterally along the straight slot 6; the nut 51 moves longitudinally with the nut sleeve 52 and the arc plate 53, so the arc plate 53 drives the bracket 81 to perform an arc motion combining transverse and longitudinal motion, and the sleeve 82 fixedly connected to the bracket 81 slides along the synchronization rod 7, and the bracket 81 moves in an arc along the guide shell 142 through the guide wheel 141. Since the nut 51 and the nut sleeve 52 are locked during the rotation of the nut 51, the arc plate 53 does not move laterally. At this time, the nut 51 only moves longitudinally with the nut sleeve 52 and the arc plate 53, so the bracket 81 moves linearly along the guide shell 142 through the guide wheel 141, and the support plate 84 is driven by the bracket 81 and the sleeve 82 to open the car door.

Claims

1. An electric plug sliding door for a public transport vehicle, comprising a frame (1), side brackets (2) being provided at the left and right ends of the frame (1), and a motor (3) being provided on the side brackets (2); characterized in that A screw rod (4) is arranged between the left and right side hangers (2), the screw rod (4) and the motor (3) are rotationally connected via a synchronous wheel and a synchronous belt, the screw rod (4) is rotationally connected to left and right opposing drive assemblies (5), the motor (3) drives the screw rod (4) to rotate, the screw rod (4) drives the drive assemblies (5) to move in opposite directions or in opposite directions at the same time, the side hangers (2) are provided with straight slots (6), a synchronous rod (7) is arranged between the straight slots (6), the synchronous rod (7) is slidably connected to a locking assembly (8), the drive assembly (5) drives the locking assembly (8) to first perform a longitudinal and transverse combined arc motion and then perform a longitudinal motion, and the locking assembly (8) opens and closes the vehicle door; The driving assembly (5) comprises a nut (51), a nut sleeve (52) and an arc-shaped plate (53) which are rotatably connected to the screw rod (4); the nut (51) is rotatably connected to the screw rod (4); the nut sleeve (52) is nested on the nut (51) and the two are meshed with each other; the nut sleeve (52) and the arc-shaped plate (53) are hinged to each other; A support ear (9) with a pin hole is provided on the circumferential outer wall of the nut sleeve (52), and the support ear (9) is hinged to the arc plate (53) via a pin. The locking assembly (8) comprises a bracket (81) hinged to the arc plate (53), a sleeve (82), a sliding ring (83) fixedly connected to the sleeve (82) and slidably connected to the synchronization rod (7), and a support plate (84) for connecting to the vehicle door; the sleeve (82) is fixed between the bracket (81) and the support plate (84), and the bracket (81) and the support plate (84) are fixedly connected; A guide assembly (14) is arranged between the frame body (1) and the bracket (81), and the guide assembly (14) comprises a guide wheel (141) arranged on the bracket (81) and a guide shell (142) arranged on the frame body (1), wherein the guide wheel (141) moves along the guide shell (142), and the guide shell (142) comprises an arc-shaped guide shell (142) for providing an arc-shaped motion combining longitudinal and transverse directions and a linear guide shell (142) for providing longitudinal motion.

2. The electric sliding plug door for public transportation according to claim 1, characterized in that A limiting column (13) is arranged on the sleeve (82), and a rubber sleeve is arranged on the limiting column (13). The limiting column is used to prevent the sleeve (82) from squeezing the side hanger (2).

3. The electric sliding plug door for public transportation according to claim 1, characterized in that The straight slot (6) is slidably connected with a deep groove ball bearing (10), and the deep groove ball bearing (10) is nested on the outer wall of the synchronization rod (7).

4. The electric sliding plug door for public transportation according to claim 1, characterized in that An intermediate frame (11) with a straight notch (6) is arranged on the frame body (1) between the side hanging frames (2), and the intermediate frame (11) is used to support the synchronization rod (7).

5. The electric sliding plug door for public transportation according to claim 3, characterized in that Limiting plates (12) are provided on both ends of the synchronization rod (7) for preventing the synchronization rod (7) from falling off the straight notch (6).

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