Side curtain sliding mechanism for side curtain van

Abstract

The invention discloses a side curtain sliding mechanism for a side curtain van, and belongs to the technical field of side curtain van vehicles. The mechanism comprises a plurality of side sliding frames arranged on the two sides of a compartment body in a sliding mode, and the side sliding frames are connected through tarpaulin. Wherein at least one side sliding frame is a driving sliding frame, the driving sliding frame is driven by a power walking unit to slide, and the other side sliding frames are driven sliding frames sliding along with the driving sliding frame; the power walking unit comprises walking wheels arranged at the lower end of the driving sliding frame, sliding guide rails are arranged on the outer side faces of the frame edge beams, and the walking wheels are vertically arranged and make rolling contact with the tops of the sliding guide rails. The walking wheel is provided with a walking driving assembly for driving the walking wheel to roll and walk, the walking driving assembly comprises a motor, and an output shaft of the motor is linked with the walking wheel through a gear set. The invention has the advantages of simple structure, direct transmission and improved operation stability and synchronism.

Description

Technical Field

[0001] This invention relates to the field of side curtain van technology, and particularly to a side curtain sliding mechanism for side curtain vans. Background Technology

[0002] Currently, existing side-curtain semi-trailer curtain opening and closing mechanisms typically employ a fixed motor combined with steel cable traction. The motor is fixedly installed at the front or rear of the trailer, and the steel cable pulls an end slide column, which in turn moves the remaining intermediate slide columns, thus opening or closing the tarpaulin. For example, there is an existing patent for an electric bidirectional integral sliding tarpaulin for vehicles, with authorization announcement number CN 206510818 U and authorization announcement date of September 22, 2017.

[0003] However, this driving method has the following problems in practical use:

[0004] First, because steel wire rope is used as the transmission medium, it is prone to loosening, wear or even breakage after long-term use, which can lead to asynchronous movement of the sliding column or incomplete closure, requiring frequent maintenance.

[0005] Secondly, wire rope transmission is greatly affected by the deformation of the vehicle frame. When the vehicle is loaded with cargo, causing deformation of the frame, the parallelism of the guide rail changes, which can easily cause the sliding column to jam, further aggravating the transmission error. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies by providing a simple and direct-drive side curtain sliding mechanism for side curtain-equipped vehicles, thereby improving the smoothness and synchronization of operation.

[0007] To achieve the above-mentioned objectives, the side curtain sliding mechanism for side curtain-equipped vehicles of the present invention adopts the following technical solution:

[0008] A side curtain sliding mechanism for a side curtain-equipped vehicle includes multiple side sliding frames slidably disposed on both sides of the vehicle body, the multiple side sliding frames being connected by a canopy; at least one of the side sliding frames is an active sliding frame, which is driven to slide by a power travel unit, and the remaining side sliding frames are passive sliding frames that follow the active sliding frame; the power travel unit includes a travel wheel disposed at the lower end of the active sliding frame, a sliding guide rail is disposed on the outer side of the side beam of the vehicle frame, the travel wheel is vertically arranged and rolls in contact with the top of the sliding guide rail; the travel wheel is provided with a travel drive assembly for driving its rolling movement; the travel drive assembly includes a motor, and the output shaft of the motor is connected to the travel wheel through a gear set.

[0009] Preferably, the gear set includes a driving pinion, a large gear, and a driven pinion. The driving pinion is connected to the output shaft of the motor, the large gear is located below the driving pinion and meshes with it, and the driven pinion is located below the large gear and meshes with it. The driven pinion is coaxially arranged with the traveling wheel. This three-stage gear reduction mechanism, consisting of the driving pinion, large gear, and driven pinion, not only amplifies the motor's output torque and improves the driving force of the traveling wheel, but also features a compact structure and reasonable layout, adapting to the limited space inside the driving carriage and ensuring smooth and reliable power transmission.

[0010] Preferably, an upper guide rail assembly is provided between the top of the side slide and the longitudinal beam of the box body, and a lower guide rail assembly is provided between the bottom of the side slide and the side beam of the frame.

[0011] Preferably, the upper guide rail assembly includes an upper guide rail mounted on the longitudinal beam of the carriage, and an upper sliding seat that can slide along the upper guide rail is provided on the top of the side slide frame; the upper sliding seat is provided with multiple first upper guide wheels and multiple second upper guide wheels, the first upper guide wheels being arranged laterally and the second upper guide wheels being arranged vertically. The upper sliding seat is provided with the first upper guide wheels arranged laterally and the second upper guide wheels arranged vertically, which respectively form a multi-directional limiting cooperation with the upper guide rail, effectively restraining the lateral swing and vertical jump of the top of the side slide frame, ensuring the stability of the side slide frame during movement, and avoiding tilting or jamming when the tarpaulin is opened or closed.

[0012] Preferably, the lower guide rail assembly includes a sliding guide rail, and the bottom of the side slide frame is provided with a sliding base that can slide along the sliding guide rail. The sliding base is provided with multiple first lower guide wheels and multiple second lower guide wheels. The first lower guide wheels are arranged laterally, and the second lower guide wheels are arranged vertically. The traveling wheels roll in contact with the top of the sliding guide rail, and at the same time, the sliding base is provided with first and second lower guide wheels arranged laterally and vertically, forming a multi-dimensional guide at the bottom. This allows the side slide frame to maintain smooth sliding even when subjected to tarpaulin tension and cargo compression, improving the overall load-bearing capacity and movement reliability of the structure.

[0013] Preferably, the sliding guide rail has a first guide rail groove and a second guide rail groove. The first guide rail groove is located above the second guide rail groove, with the opening of the first guide rail groove located on one side and the opening of the second guide rail groove located at the bottom. The second lower guide wheel is the main guide wheel, which is rolled and installed in the first guide rail groove. The main guide wheel rolls and contacts the upper and lower groove walls of the first guide rail groove, and the traveling wheel rolls and contacts the top surface of the upper groove wall of the first guide rail groove. The first lower guide wheel is an auxiliary guide wheel, with the diameter of the main guide wheel being larger than the diameter of the auxiliary guide wheel. The auxiliary guide wheel is rolled and installed in the first and second guide rail grooves. The sliding guide rail adopts a double-groove structure, with the main guide wheel rolled and installed in the first guide rail groove and in contact with the upper and lower groove walls. The auxiliary guide wheel is rolled and installed in both the first and second guide rail grooves, and the diameter of the main guide wheel is larger than that of the auxiliary guide wheel. This design not only achieves dual vertical and horizontal limiting but also optimizes the force distribution through the cooperation of the large and small wheels, improving the stability of the carriage operation.

[0014] Preferably, the main guide wheel of the active carriage is positioned close to the traveling wheel. The driving force generated by the traveling wheel acts on the vicinity of the main guide wheel, forming stable support and guidance, thereby driving the active carriage to move smoothly.

[0015] Preferably, two active carriages are provided, located at the front and rear ends of the side beam of the vehicle frame, respectively, and the driven carriage is located between the two active carriages. By providing active carriages at the front and rear ends of the side beam of the vehicle frame, and the driven carriage located between them, a layout pattern of two-end drive and middle follow-up is formed. This not only balances the traction force of the entire curtain system, but also enables bidirectional drive during opening or closing, improving the efficiency and response speed of the side curtain opening and closing.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. This invention adopts a method in which the motor directly drives the walking wheel through the gear set. The structure is simple and abandons the traditional wire rope traction structure. It not only eliminates the problems of jamming and frequent maintenance caused by wire rope slack, wear or frame deformation, but also integrates the motor and gear set on the active slide, making the power output more direct, the control more precise and the response speed faster, further improving the stability and synchronization of the side slide operation.

[0018] 2. In this invention, the traveling wheel and the main guide wheel are closely arranged on the upper and lower sides of the first guide rail groove, so that the driving force generated by the traveling wheel acts on the vicinity of the main guide wheel, forming stable support and guidance, thereby driving the active carriage to move smoothly. Attached Figure Description

[0019] Figure 1 This is the front view of the present invention;

[0020] Figure 2 for Figure 1 AA section view;

[0021] Figure 3 for Figure 2 Enlarged view of part B;

[0022] Figure 4 for Figure 2 Enlarged view of part C;

[0023] Figure 5 This is a schematic diagram of an active carriage;

[0024] Figure 6 for Figure 5 Enlarged view of part D;

[0025] Figure 7 for Figure 6 Side view.

[0026] Among them, 1 is the longitudinal beam of the box body, 2 is the side beam of the frame, 3 is the driving carriage, 4 is the driven carriage, 5 is the upper guide rail, 6 is the second upper guide wheel, 7 is the first upper guide wheel, 8 is the driving pinion, 9 is the large gear, 10 is the driven pinion, 11 is the second lower guide wheel, 12 is the first lower guide wheel, 13 is the sliding guide rail, 14 is the traveling wheel, 15 is the first guide rail groove, 16 is the second guide rail groove, and 17 is the motor. Detailed Implementation

[0027] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0028] like Figure 1-7As shown, a side curtain sliding mechanism for a side curtain-equipped vehicle includes multiple side sliding frames slidably disposed on both sides of the vehicle body, connected by a canopy; at least one side sliding frame is an active sliding frame 3, which is driven to slide by a power travel unit, and the remaining side sliding frames are driven sliding frames 4 that follow the active sliding frame 3; two active sliding frames 3 are provided, located at the front and rear ends of the vehicle frame side beam 2 respectively, and the driven sliding frames 4 are disposed between the two active sliding frames 3; the power travel unit includes a traveling wheel 14 disposed at the lower end of the active sliding frame 3, and a sliding guide rail 13 is provided on the outer surface of the vehicle frame side beam 2, with the traveling wheel 14 arranged vertically and rolling in contact with the sliding guide rail 13. The top of the side slide frame is equipped with a driving assembly for driving the wheels to roll. The driving assembly includes a motor 17, whose output shaft is connected to the wheels 14 via a gear set. The gear set includes a driving pinion 8, a large gear 9, and a driven pinion 10. The driving pinion 8 is connected to the output shaft of the motor 17. The large gear 9 is located below the driving pinion 8 and meshes with it. The driven pinion 10 is located below the large gear 9 and meshes with it. The driven pinion 10 is coaxially arranged with the wheels 14. An upper guide rail assembly is provided between the top of the side slide frame and the longitudinal beam 1 of the body, and a lower guide rail assembly is provided between the bottom of the side slide frame and the side beam 2 of the frame. The guide rail assembly includes an upper guide rail 5 mounted on the longitudinal beam 1 of the carriage, and an upper sliding seat that can slide along the upper guide rail 5 at the top of the side slide frame. The upper sliding seat is provided with multiple first upper guide wheels 7 and multiple second upper guide wheels 6, with the first upper guide wheels 7 arranged laterally and the second upper guide wheels 6 arranged vertically. The lower guide rail assembly includes a sliding guide rail 13. The bottom of the side slide frame is provided with a lower sliding seat that can slide along the sliding guide rail 13, with multiple first lower guide wheels 12 and multiple second lower guide wheels 11, with the first lower guide wheels 12 arranged laterally and the second lower guide wheels 11 arranged vertically. The sliding guide rail 13 is provided with a first guide rail groove 15 and a second guide rail groove 16. 6. The first guide rail groove 15 is located above the second guide rail groove 16. The opening of the first guide rail groove 15 is located on one side, and the opening of the second guide rail groove 16 is located at the bottom. The second lower guide wheel 11 is the main guide wheel, and the main guide wheel is rolled and installed in the first guide rail groove 15. The main guide wheel rolls and contacts the upper and lower groove walls of the first guide rail groove 15. The main guide wheel of the active slide 3 is set close to the traveling wheel 14, and the traveling wheel 14 rolls and contacts the top surface of the upper groove wall of the first guide rail groove 15. The first lower guide wheel 12 is the auxiliary guide wheel. The diameter of the main guide wheel is larger than the diameter of the auxiliary guide wheel. The auxiliary guide wheel rolls and is installed in the first guide rail groove 15 and the second guide rail groove 16.

[0029] The specific working process and principle of this invention are as follows: When the side curtain needs to be opened or closed, the motor 17 on the active carriage 3 starts, and its output shaft drives the active pinion 8 to rotate. The active pinion 8 drives the large gear 9 meshing with it to decelerate and rotate. The driven pinion 10, which is coaxially arranged with the large gear 9, rotates synchronously and finally transmits the power to the traveling wheel 14. The traveling wheel 14 rolls in contact with the top surface of the groove wall of the first guide rail groove 15 of the sliding guide rail 13 and rolls longitudinally along the side beam 2 of the frame under the action of friction. Since the traveling wheel 14 and the main guide wheel (i.e., the second lower guide wheel 11) of the active carriage 3 are located on the upper and lower sides of the groove wall of the first guide rail groove 15 and are arranged adjacent to each other, the driving force generated by the traveling wheel acts on the vicinity of the main guide wheel, forming stable support and guidance, thereby driving the active carriage 3 to move smoothly. When the active slide 3 moves, it pulls the other driven slides 4 to slide synchronously through the tarpaulin connected to it. During this process, the first upper guide wheel 7 and the second upper guide wheel 6 at the top of each slide are guided laterally and vertically along the upper guide rail 5, respectively. The first lower guide wheel 12 and the second lower guide wheel 11 at the bottom are guided laterally and vertically along the first guide groove 15 and the second guide groove 16 of the sliding guide rail 13, respectively. This ensures that the entire sliding mechanism remains stable and synchronous during the movement, avoids uneven loading and jamming, and realizes smooth opening and closing of the side curtain.

[0030] In the description of this invention, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0031] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] The foregoing description illustrates and describes preferred embodiments of the present invention. As previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A side curtain sliding mechanism for a side curtain van, comprising multiple side sliding frames slidably disposed on both sides of the van body, the multiple side sliding frames being connected by a canopy; wherein at least one side sliding frame is an active sliding frame, the active sliding frame being driven to slide by a power travel unit, and the remaining side sliding frames are driven sliding frames that follow the active sliding frame; characterized in that: The power walking unit includes a walking wheel set at the lower end of the active carriage, and a sliding guide rail is provided on the outer side of the frame side beam. The walking wheel is arranged vertically and rolls in contact with the top of the sliding guide rail. The walking wheel is provided with a walking drive assembly that drives it to roll. The walking drive assembly includes a motor, and the output shaft of the motor is connected to the walking wheel through a gear set.

2. The side curtain sliding mechanism for a side curtain-covered vehicle according to claim 1, characterized in that: The gear set includes a driving pinion, a large gear, and a driven pinion. The driving pinion is connected to the output shaft of the motor. The large gear is located below the driving pinion and meshes with it. The driven pinion is located below the large gear and meshes with it. The driven pinion is coaxially arranged with the traveling wheel.

3. The side curtain sliding mechanism for a side curtain-equipped vehicle according to claim 1, characterized in that: An upper guide rail assembly is provided between the top of the side slide and the longitudinal beam of the box body, and a lower guide rail assembly is provided between the bottom of the side slide and the side beam of the frame.

4. The side curtain sliding mechanism for a side curtain-equipped vehicle according to claim 3, characterized in that: The upper guide rail assembly includes an upper guide rail disposed on the longitudinal beam of the carriage, and an upper slide block that can slide along the upper guide rail is provided on the top of the side slide block; the upper slide block is provided with a plurality of first upper guide wheels and a plurality of second upper guide wheels, the first upper guide wheels being arranged laterally and the second upper guide wheels being arranged vertically.

5. The side curtain sliding mechanism for a side curtain-equipped vehicle according to claim 3, characterized in that: The lower guide rail assembly includes a sliding guide rail, and the bottom of the side slide frame is provided with a sliding base that can slide along the sliding guide rail. The sliding base is provided with multiple first lower guide wheels and multiple second lower guide wheels. The first lower guide wheels are arranged horizontally, and the second lower guide wheels are arranged vertically.

6. The side curtain sliding mechanism for a side curtain-covered vehicle according to claim 5, characterized in that: The sliding guide rail is provided with a first guide rail groove and a second guide rail groove. The first guide rail groove is located above the second guide rail groove, with the opening of the first guide rail groove located on one side and the opening of the second guide rail groove located at the bottom. The second lower guide wheel is the main guide wheel, which is rolled and installed in the first guide rail groove. The main guide wheel rolls and contacts the upper and lower groove walls of the first guide rail groove, and the traveling wheel rolls and contacts the top surface of the upper groove wall of the first guide rail groove. The first lower guide wheel is an auxiliary guide wheel, with the diameter of the main guide wheel being larger than the diameter of the auxiliary guide wheel. The auxiliary guide wheel is rolled and installed in the first guide rail groove and the second guide rail groove.

7. The side curtain sliding mechanism for a side curtain-covered vehicle according to claim 6, characterized in that: The main guide wheel of the active carriage is positioned close to the traveling wheel.

8. The side curtain sliding mechanism for a side curtain-covered vehicle according to claim 1, characterized in that: Two active carriages are provided, located at the front and rear ends of the side beam of the vehicle frame, respectively, and the driven carriage is provided between the two active carriages.

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