A telescopic step device and an automobile

Abstract

The present invention provides a telescopic step device and an automobile. The telescopic step device includes a driving mechanism, a sprocket and chain mechanism, and a step panel. The sprocket and chain mechanism includes a sprocket and a chain. The driving mechanism is connected to the sprocket to drive the sprocket to rotate. The chain is wound and connected to the sprocket to change direction as the sprocket rotates. The step panel is connected to the chain to telescopically move relative to the sprocket. When a person needs to get on or off the vehicle, the sprocket and chain mechanism can be driven by the driving mechanism, so that the step panel can be extended or retracted, facilitating the person to use the pedal panel to get on or off the vehicle. Moreover, the chain that drives the step panel to move can change direction, which is equivalent to folding the whole device, effectively reducing the size ratio of the space below the automobile floor and improving the utilization rate.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive parts, and more specifically, to a telescopic step device and an automobile. Background Art

[0002] Currently, buses or commercial vehicles usually have step boards configured at their doors. However, the distance between the step boards and the ground is generally large, making it very inconvenient for the elderly, children, and disabled people to get on and off the vehicle. Moreover, with the increasing development of new energy vehicles, arranging power batteries under the vehicle floor has become a trend. Whether it is for the protection of the batteries or to improve the vehicle's passing performance, there will inevitably be certain restrictions on the installation space of the step boards. Summary of the Invention

[0003] The problem solved by the present invention is how to reduce the size ratio of the step board to the space under the floor.

[0004] To solve the above problems, the present invention provides a telescopic step device, which includes a driving mechanism, a sprocket and chain mechanism, and a step panel. The sprocket and chain mechanism includes a sprocket and a chain. The driving mechanism is connected to the sprocket to drive the sprocket to rotate. The chain is wound around and connected to the sprocket to change direction as the sprocket rotates. The step panel is connected to the chain to perform telescopic movement relative to the sprocket.

[0005] The technical effect of the embodiment of the present invention is as follows: The driving mechanism can drive the sprocket to rotate. Since the chain is wound around the sprocket, similar to the sprocket and chain mechanism of a bicycle, when the sprocket rotates, the chain moves, and the moving directions of the chains in different positions of the sprocket are different, which is equivalent to a turn. For example, when the chain below the sprocket moves towards the sprocket, the chain above the sprocket moves away from the sprocket. At the same time, the movement of the chain will drive the movement of the step panel, which is equivalent to performing telescopic movement relative to the sprocket or the driving mechanism with a relatively unchanged position. When a person needs to get on and off the vehicle, the driving mechanism can be used to drive the sprocket and chain mechanism, and then the step panel can be extended or retracted, facilitating the person to use the step panel to get on and off the vehicle. Moreover, the chain that drives the step panel to move can change direction, which is equivalent to folding the whole device, and can effectively reduce the size ratio of the space under the vehicle floor and improve the utilization rate.

[0006] Preferably, the telescopic step device further includes a frame structure. The driving mechanism is fixed outside the frame structure, and the sprocket and chain mechanism and the step panel are both installed inside the frame structure. The frame structure has a step opening for the sprocket and chain mechanism to drive the step panel to extend or retract.

[0007] Preferably, the frame structure includes cover plates and support columns. The two cover plates are arranged at intervals, and the support columns connect the two cover plates. The driving mechanism is fixed to the side of the cover plate away from the support column, and both the sprocket chain mechanism and the step panel are installed between the two cover plates.

[0008] Preferably, the sprocket chain mechanism further includes a chain shaft. A plurality of the chains are arranged in parallel and are respectively wound and connected to a plurality of the sprockets, and the chain shaft connects the plurality of chains.

[0009] Preferably, a chain guide rail is provided on the side wall of the cover plate facing the support column. The shape of the chain guide rail is a U-shaped structure, and the open end of the U-shaped structure faces the step opening. The chain shaft is inserted into the chain guide rail so that the chain moves along the track of the chain guide rail.

[0010] Preferably, the driving mechanism includes a motor. The motor is fixedly arranged on the side of the cover plate away from the support column, and the output shaft of the motor passes through the cover plate and is drivingly connected to the sprocket chain mechanism.

[0011] Preferably, the telescopic step device further includes a transmission mechanism. The transmission mechanism is rotatably installed on the side of the cover plate facing the support column. The transmission mechanism is drivingly connected to the driving mechanism and is also drivingly connected to the sprocket, so that the transmission mechanism drives the sprocket to rotate.

[0012] Preferably, the transmission mechanism includes a transmission gear, a spline shaft and an output gear. The transmission gear meshes with the output gear. Both the transmission gear and the sprocket are installed on the spline shaft. One end of the spline shaft is rotatably installed on one cover plate, and the other end of the spline shaft is rotatably installed on the other cover plate. The output gear is connected to the driving mechanism. The driving mechanism is used to drive the output gear to rotate, and the output gear is used to drive the transmission gear and the sprocket to rotate synchronously.

[0013] Preferably, the frame structure further includes a limit shaft. The limit shaft is installed at the step opening, and the chain is provided with a limit block. The limit shaft is used to abut against the limit block.

[0014] The present invention also provides an automobile, which includes the telescopic step device as described above.

[0015] The beneficial effects of the automobile of the present invention and the telescopic step device are the same, and will not be elaborated here. Description of the Drawings

[0016] Figure 1 It is a schematic internal structure diagram of a telescopic step device in an extended state provided by an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the overall structure of a telescopic step device provided by an embodiment of the present invention in the extended state;

[0018] Figure 3 This is a schematic diagram of the internal structure of a telescopic step device provided by an embodiment of the present invention in the retracted state;

[0019] Figure 4 This is a schematic diagram of the overall structure of a telescopic step device provided by an embodiment of the present invention in the retracted state;

[0020] Figure 5 This is a schematic diagram of the connection structure between the driving mechanism and the transmission mechanism provided by an embodiment of the present invention;

[0021] Figure 6 This is a schematic diagram of the driving mechanism provided by an embodiment of the present invention;

[0022] Figure 7 This is a schematic diagram of the transmission mechanism provided by an embodiment of the present invention;

[0023] Figure 8 This is a schematic diagram of the structure of the chain mounted on the sprocket provided by an embodiment of the present invention;

[0024] Figure 9 This is a schematic diagram of the frame structure provided by an embodiment of the present invention;

[0025] Figure 10 This is a schematic diagram of the structure of the chain shaft inserted into the chain guide provided by an embodiment of the present invention;

[0026] Figure 11 This is a schematic diagram of the internal structure of a telescopic step device provided by an embodiment of the present invention;

[0027] Figure 12 This is a schematic diagram of the structure where the limit shaft abuts against the limit block provided by an embodiment of the present invention.

[0028] Explanation of reference numerals:

[0029] 1. Driving mechanism; 11. Motor; 2. Transmission mechanism; 21. Transmission gear; 22. Spline shaft; 23. Output gear; 3. Sprocket and chain mechanism; 31. Sprocket; 32. Chain; 33. Chain shaft; 34. Limit block; 4. Step panel; 5. Frame structure; 51. Step opening; 52. Cover plate; 53. Support column; 54. Chain guide; 55. Limit shaft. Detailed implementation manners

[0030] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the specific embodiments of the present invention will be made with reference to the accompanying drawings.

[0031] It should be noted that the terms "first", "second", etc. in the description, claims and the above-mentioned drawings of the present invention are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such data used can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein.

[0032] See Figures 1 to 4 As shown, a telescopic step device according to an embodiment of the present invention includes a driving mechanism 1, a sprocket and chain mechanism 3, and a step panel 4. The sprocket and chain mechanism 3 includes a sprocket 31 and a chain 32. The driving mechanism 1 is connected to the sprocket 31 to drive the sprocket 31 to rotate. The chain 32 is wound around and connected to the sprocket 31 to change direction as the sprocket 31 rotates. The step panel 4 is connected to the chain 32 to perform a telescopic movement relative to the sprocket 31.

[0033] Specifically, the telescopic step device may include a driving mechanism 1, a sprocket and chain mechanism 3, and a step panel 4. The driving mechanism 1 may be fixedly arranged, and the driving mechanism 1 may be drivingly connected to the sprocket and chain mechanism 3. The driving mechanism 1 may provide power for the sprocket and chain mechanism 3.

[0034] The sprocket and chain mechanism 3 may include a sprocket 31 and a chain 32. The chain 32 may be wound around and connected to the sprocket 31. Similar to the sprocket and chain mechanism of a bicycle, when the sprocket 31 rotates, the sprocket 31 drives the chain 32 to move, and the moving directions of the chain 32 at different positions of the sprocket 31 are different, which is equivalent to turning. For example, when the chain 32 below the sprocket 31 moves in a direction close to the sprocket 31, the chain 32 above the sprocket 31 moves in a direction away from the sprocket 31. At the same time, the movement of the chain 32 drives the movement of the step panel 4, which is equivalent to performing a telescopic movement relative to the sprocket 31 or the driving mechanism 1 with a relatively unchanged position.

[0035] More clearly, when a person needs to get on or off the vehicle, the driving mechanism 1 can be used to drive the sprocket 31 to rotate. The sprocket 31 drives the chain 32 to move, and then the chain 32 drives the step panel 4 to extend or retract, facilitating the person to use the step panel 4 to get on or off the vehicle. Moreover, the chain 32 driving the step panel 4 can change direction, which is equivalent to folding the whole device, and can effectively reduce the size ratio of the space under the vehicle floor and improve the utilization rate.

[0036] See Figures 1 to 4As shown, in some embodiments, the telescopic step device further includes a frame structure 5. The driving mechanism 1 is fixed outside the frame structure 5, and the sprocket chain mechanism 3 and the step panel 4 are both installed inside the frame structure 5. The frame structure 5 has a step opening 51 for the sprocket chain mechanism 3 to drive the step panel 4 to extend or retract.

[0037] Specifically, the telescopic step device may further include a frame structure 5. In this embodiment, the shape of the frame structure 5 is a square. The driving mechanism 1 can be fixed outside the frame structure 5, and the sprocket chain mechanism 3 and the step panel 4 can both be installed inside the frame structure 5. And the frame structure 5 can have a step opening 51. The driving mechanism 1 can pass through the frame structure 5 to be drivingly connected with the sprocket chain mechanism 3. The sprocket chain mechanism 3 can be installed on the inner side wall of the frame structure 5. The frame structure 5 can have a step opening 51, and the shape of the step opening 51 can be rectangular. The driving mechanism 1 can drive the sprocket chain mechanism 3 to drive the step panel 4 to extend from or retract into the step opening 51, which is convenient for people to get on and off the vehicle.

[0038] See Figure 9 As shown, in some embodiments, the frame structure 5 includes a cover plate 52 and support columns 53. The two cover plates 52 are arranged at intervals, and the support columns 53 connect the two cover plates 52. The driving mechanism 1 is fixed on the side of the cover plate 52 facing away from the support columns 53, and the sprocket chain mechanism 3 and the step panel 4 are both installed between the two cover plates 52.

[0039] Specifically, the frame structure 5 may include a cover plate 52 and support columns 53. There may be two cover plates 52, and the two cover plates 52 are arranged at intervals. For the convenience of description, the two cover plates 52 can be defined as the right cover plate and the left cover plate. One end of the support column 53 is connected to the right cover plate, and the other end of the support column 53 is connected to the left cover plate. In this embodiment, an installation hole may be provided on the side wall of the left cover plate, and the driving mechanism 1 can be installed in the installation hole, and the driving mechanism 1 is located on the side of the left cover plate facing away from the support columns 53. The sprocket chain mechanism 3 and the step panel 4 can both be installed between the left cover plate and the right cover plate.

[0040] More clearly, the sprocket chain mechanism 3 can be installed on the side walls of the left cover plate and the right cover plate close to each other, and the driving mechanism 1 can pass through the left cover plate to be drivingly connected with the sprocket chain mechanism 3. The step panel 4 can be installed on the sprocket chain mechanism 3.

[0041] In some embodiments, the frame structure 5 may further include three cover plates 52. For the convenience of description, the three cover plates are defined as the front cover plate, the left cover plate, and the right cover plate. The opposite ends of the front cover plate may be respectively connected to the left cover plate and the right cover plate, and the step opening 51 may be provided on the front cover plate, which can make the frame structure 5 more firm.

[0042] In some embodiments, the frame structure 5 may further include a covering plate. The covering plate may be respectively connected to the left cover plate, the right cover plate, and the front cover plate. The covering plate, the left cover plate, the right cover plate, and the front cover plate may form a sealed cavity structure, and the cavity structure may wrap the sprocket chain mechanism 3 and the step panel 4 therein, which can prevent impurities such as dust, sediment, or stones from entering the sprocket chain mechanism 3, thus affecting the normal operation of the telescopic step device.

[0043] See Figure 8 As shown, in some embodiments, the sprocket chain mechanism 3 further includes a chain shaft 33. A plurality of the chains 32 are arranged in parallel and are respectively wound and connected to a plurality of the sprockets 31, and the chain shaft 33 connects the plurality of the chains 32.

[0044] Specifically, the sprocket chain mechanism 3 may include a chain shaft 33. A plurality of the chains 32 may be arranged in parallel, and a plurality of the chains 32 are respectively wound and connected to a plurality of the sprockets 31. In this embodiment, the sprocket chain mechanism 3 may include two sprockets 31 and two chains 32. The two chains 32 may be respectively wound and connected to the two sprockets 31. The sprocket chain mechanism 3 includes a plurality of chain shafts 33. The plurality of chain shafts 33 may be arranged in parallel, and the plurality of chain shafts 33 are perpendicular to the chains 32. The opposite ends of the chain shaft 33 may be respectively connected to the two chains 32, which can increase the structural strength of the sprocket chain mechanism 3, so that when the step panel 4 is installed on the sprocket chain mechanism 3, the step panel 4 can bear greater acting forces.

[0045] See Figure 9 and Figure 10 As shown, in some embodiments, a chain guide 54 is provided on the side wall of the cover plate 52 facing the support column 53. The shape of the chain guide 54 is a U-shaped structure. The open end of the U-shaped structure faces the step opening 51, and the chain shaft 33 is inserted into the chain guide 54 so that the chain 32 moves along the track of the chain guide 54.

[0046] Specifically, a chain guide 54 may be provided on the side wall of the cover plate 52 facing the support column 53. In this embodiment, chain guides 54 may be respectively provided on the side walls of the left cover plate and the right cover plate close to each other. The chain guide 54 may extend along the length direction of the cover plate 52. In this embodiment, the shape of the chain guide 54 may be a U-shaped structure, and the open end of the U-shaped structure may face the step opening 51.

[0047] In order for the sprocket and chain mechanism 3 to be inserted into the chain guide 54, the shape of the chain 32 can also be a U-shaped structure. The closed end of the chain 32 can be wound around the sprocket 31, and the open end of the chain 32 can face the step opening 51. The opposite ends of the chain shaft 33 are respectively connected to the two chains 32, and the opposite ends of the chain shaft 33 extend out of the chain 32 and are respectively inserted into the two chain guides 54. When the sprocket 31 rotates, the chain shaft 33 can restrict the movement of the chain 32 along the trajectory of the chain guide 54. The chain guide 54 can play a guiding role, enabling the sprocket and chain mechanism 3 to extend or retract more smoothly from the step opening 51.

[0048] See Figure 5 and Figure 6 As shown, in some embodiments, the drive mechanism 1 includes a motor 11. The motor 11 is fixedly arranged on the side of the cover plate 52 facing away from the support column 53. The output shaft of the motor 11 passes through the cover plate 52 and is drivingly connected to the sprocket and chain mechanism 3.

[0049] Specifically, the drive mechanism 1 can include a motor 11. The left cover plate can be provided with an installation hole for installing the motor 11. The motor 11 can be installed on the installation hole, and the motor 11 is located on the side of the left cover plate facing away from the support column 53. The left cover plate can be provided with a through hole. The output shaft of the motor 11 can pass through the through hole, and the output shaft of the motor 11 can be drivingly connected to the sprocket 31. The motor 11 can drive the sprocket 31 to rotate. The motor 11 can be firmly installed on the cover plate 52 to stably provide power to the sprocket 31.

[0050] See Figure 5 and Figure 7 As shown, in some embodiments, the telescopic step device further includes a transmission mechanism 2. The transmission mechanism 2 is rotatably installed on the side of the cover plate 52 facing the support column 53. The transmission mechanism 2 is drivingly connected to the drive mechanism 1 and is in transmission connection with the sprocket 31, so that the transmission mechanism 2 drives the sprocket 31 to rotate.

[0051] Specifically, the telescopic step device can further include a transmission mechanism 2. The transmission mechanism 2 can be rotatably installed on the side wall of the cover plate 52 facing the support column 53, and the transmission mechanism 2 can be drivingly connected to the drive mechanism, that is, the transmission mechanism 2 can be connected to the motor 11, and the transmission mechanism 2 can be in transmission connection with the sprocket 31. The transmission mechanism 2 can transmit the power provided by the drive mechanism 1 to the sprocket 31, thereby driving the sprocket 31 to rotate, and the transmission method is more stable.

[0052] See Figure 5 and Figure 7As shown, in some embodiments, the transmission mechanism 2 includes a transmission gear 21, a spline shaft 22, and an output gear 23. The transmission gear 21 meshes with the output gear 23. Both the transmission gear 21 and the sprocket 31 are mounted on the spline shaft 22. One end of the spline shaft 22 is rotatably mounted on one of the cover plates 52, and the other end of the spline shaft 22 is rotatably mounted on the other cover plate 52. The output gear 23 is connected to the drive mechanism 1, and the drive mechanism 1 is used to drive the output gear 23 to rotate. The output gear 23 is used to drive the transmission gear 21 and the sprocket 31 to rotate synchronously.

[0053] Specifically, the transmission mechanism 2 may include a transmission gear 21, a spline shaft 22, and an output gear 23. One end of the spline shaft 22 may be rotatably mounted on one cover plate 52, and the other end of the spline shaft 22 may be rotatably mounted on the other cover plate 52. More clearly, one end of the spline shaft 22 may be rotatably mounted on the left cover plate, and the other end of the spline shaft 22 may be rotatably mounted on the right cover plate. Both the transmission gear 21 and the sprocket 31 may be mounted on the spline shaft 22, and the transmission gear 21 may mesh with the output gear 23. The output gear 23 may be connected to the drive mechanism 1.

[0054] When the motor 11 drives the output gear 23 to rotate, the output gear 23 can drive the transmission gear 21 to rotate. The transmission gear 21 can drive the sprocket 31 to move synchronously through the spline shaft 22, that is, the transmission gear 21 can rotate synchronously with the sprocket 31. The chain 32 can be wound around the sprocket 31. Thus, when the sprocket 31 rotates, the sprocket 31 can drive the chain 32 to move. The chain 32 can drive the step panel 4 to extend out of or retract from the step opening 51, and the extension length of the step panel 4 can be controlled by controlling the rotation degree of the sprocket 31, which further facilitates people to get on and off the vehicle.

[0055] See Figure 11 and Figure 12 As shown, in some embodiments, the frame structure 5 further includes a limit shaft 55. The limit shaft 55 is mounted on the step opening 51. The chain 32 is provided with a limit block 34, and the limit shaft 55 is used to abut against the limit block 34.

[0056] Specifically, the frame structure 5 may further include a limit shaft 55. The limit shaft 55 may be installed at the step opening 51. A limit block 34 may be provided on the chain 32. The opposite ends of the limit shaft 55 may be respectively connected to the left cover plate and the right cover plate. The limit shaft 55 is located at the step opening 51 and may be located below the chain 32. The limit block 34 may protrude from the chain 32 towards the limit shaft 55. During the movement of the chain 32, the limit block 34 may abut against the limit shaft 55. Thus, the cooperation between the limit block 34 and the limit shaft 55 can play a role in limiting the moving distance of the chain 32 and prevent the chain 32 from disengaging from the sprocket 31.

[0057] A vehicle according to another embodiment of the present invention includes the telescopic step device as described above.

[0058] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will all fall within the protection scope of the present invention.

Claims

1. A telescopic step device, characterized in that, The invention comprises a driving mechanism (1), a sprocket chain mechanism (3) and a step panel (4), wherein the sprocket chain mechanism (3) comprises a sprocket (31) and a chain (32), wherein the driving mechanism (1) is connected to the sprocket (31) to drive the sprocket (31) to rotate, the chain (32) is wound around the sprocket (31) to change direction with the rotation of the sprocket (31), and the step panel (4) is connected to the chain (32) to perform telescopic movement relative to the sprocket (31); the telescopic stepping device further comprises a frame structure (5), wherein the sprocket chain mechanism (3) and the step panel (4) are both installed in the frame structure (5), and the frame structure (5) has a step opening (51), and the step opening (51) is used to The sprocket chain mechanism (3) is used to drive the step panel (4) to extend or retract; the frame structure (5) includes a cover plate (52) and a support column (53), two cover plates (52) are arranged at intervals, and the support column (53) connects the two cover plates (52); the sprocket chain mechanism (3) also includes a chain shaft (33), a plurality of chains (32) are arranged in parallel and are respectively wound around and connected to a plurality of sprockets (31), and the chain shaft (33) connects the plurality of chains (32); a chain guide rail (54) is provided on the side wall of the cover plate (52) facing the support column (53), and the chain shaft (33) is inserted into the chain guide rail (54) so that the chain (32) moves along the trajectory of the chain guide rail (54).

2. The telescopic step device according to claim 1, characterized in that, The driving mechanism (1) is fixed outside the frame structure (5).

3. The telescopic step device according to claim 1, wherein, The driving mechanism (1) is fixed to the side of the cover plate (52) away from the support column (53), and the sprocket chain mechanism (3) and the step panel (4) are both installed between the two cover plates (52).

4. The telescopic step device according to claim 1, wherein, The chain guide rail (54) is in the shape of a U-shaped structure, with the open end of the U-shaped structure facing the step opening (51).

5. The telescopic step device according to claim 3, characterized in that, The driving mechanism (1) comprises a motor (11), the motor (11) being fixedly arranged on a side of the cover plate (52) facing away from the support column (53), and the output shaft of the motor (11) passing through the cover plate (52) and being drivingly connected to the sprocket chain mechanism (3).

6. The telescopic step device according to claim 3, characterized in that The transmission mechanism (2) is also included. The transmission mechanism (2) is rotatably mounted on a side of the cover plate (52) facing the support column (53). The transmission mechanism (2) is drivingly connected to the drive mechanism (1), and the transmission mechanism (2) is drivingly connected to the sprocket (31), so that the transmission mechanism (2) drives the sprocket (31) to rotate.

7. The telescopic step device according to claim 6, wherein The transmission mechanism (2) includes a transmission gear (21), a spline shaft (22) and an output gear (23). The transmission gear (21) meshes with the output gear (23). The transmission gear (21) and the sprocket (31) are both mounted on the spline shaft (22). One end of the spline shaft (22) is rotatably mounted on one of the cover plates (52), and the other end of the spline shaft (22) is rotatably mounted on the other cover plate (52). The output gear (23) is connected to the drive mechanism (1). The drive mechanism (1) is used to drive the output gear (23) to rotate, and the output gear (23) is used to drive the transmission gear (21) and the sprocket (31) to rotate synchronously.

8. The telescopic step device according to claim 1, wherein, The frame structure (5) further includes a limit shaft (55). The limit shaft (55) is mounted on the step opening (51). The chain (32) is provided with a limit block (34). The limit shaft (55) is used to abut against the limit block (34).

9. A vehicle, characterized in that, It includes the telescopic step device according to any one of claims 1-8.

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