Vehicle stepping structure

Abstract

The utility model discloses a vehicle stepping structure, and belongs to the technical field of vehicle installation accessories, the vehicle stepping structure comprises an installation shell, a stepping plate and a driving mechanism, the installation shell is installed at the bottom of an entrance and exit of a carriage, and the driving mechanism comprises a driving assembly and a connecting rod assembly; the driving assembly comprises an air cylinder, a driving plate, a ball sleeve and a ball screw, the air cylinder is fixed in the mounting shell, the driving plate is fixed at the telescopic end of the air cylinder, the ball sleeve is fixed on the driving plate, the ball sleeve is connected to the ball screw through a ball, and the ball screw is rotationally connected in the mounting shell; the input end of the connecting rod assembly is fixed to the ball screw, and the output end of the connecting rod assembly is fixed to the fixed step plate. The air cylinder is used for replacing a motor for driving, the waterproof capacity of the vehicle stepping structure is improved, and therefore the service life of the vehicle stepping structure is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle mounting accessories, and particularly discloses a vehicle step structure. BACKGROUND

[0002] A bus, i.e. a bus or a coach, is a typical vehicle type of large and medium-sized passenger cars in the passenger car category, and is a commercial vehicle designed and equipped for solving urban and suburban transportation. In order to facilitate passengers to get on and off the vehicle, the existing bus import and export bottom is often provided with a step.

[0003] The related art vehicle step comprises a mounting shell, a motor, a connecting rod and a step plate. The mounting shell is fixed to the outer bottom wall of the vehicle cabin at the import and export. The motor is fixed in the mounting shell, and the output shaft of the motor extends out of the mounting shell. The connecting rod is located outside the mounting shell. One end of the connecting rod is fixed to the output shaft of the motor, and the other end of the connecting rod is fixed to the step plate. Starting the motor, the motor can drive the connecting rod to rotate, so as to make the step plate extend out or retract into the vehicle cabin, thereby facilitating passengers to get on and off the vehicle.

[0004] For the related art in the above, the inventor finds that when the vehicle runs on a road with too much water, the motor on the vehicle step will be soaked in water for a long time, which is easy to cause the magnetic poles in the motor to be short-circuited, thereby reducing the service life of the motor, and thus reducing the service life of the vehicle step. CONTENT OF THE UTILITY MODEL

[0005] In order to improve the service life of the vehicle step, the present application provides a vehicle step structure.

[0006] The vehicle step structure provided by the present application adopts the following technical solution:

[0007] A vehicle step structure comprises a mounting shell, a step plate and a driving mechanism. The mounting shell is installed at the import and export bottom of the vehicle cabin. The driving mechanism comprises a driving assembly and a connecting rod assembly.

[0008] The driving assembly comprises a gas cylinder, a driving plate, a ball sleeve and a ball screw. The gas cylinder is fixed in the mounting shell. The driving plate is fixed at the telescopic end of the gas cylinder. The ball sleeve is fixed on the driving plate. The ball sleeve is connected to the ball screw through balls. The ball screw is rotationally connected in the mounting shell. The connecting rod assembly is fixed at the transmission input end of the ball screw. The connecting rod assembly is fixed at the transmission output end of the step plate.

[0009] By adopting the above technical solution, starting the gas cylinder, the gas cylinder can drive the driving plate and the ball sleeve to move. The movement of the ball sleeve can drive the ball screw to rotate. The rotation of the ball screw can make the connecting rod assembly drive the step plate to extend out or retract into the vehicle cabin, thereby facilitating passengers to get on and off the vehicle. The use of the gas cylinder instead of the motor for driving improves the waterproof capability of the vehicle step structure, thereby improving the service life of the vehicle step structure.

[0010] Optionally, the connecting rod assembly comprises a first connecting rod, a second connecting rod and a third connecting rod, one end of the first connecting rod is fixed on the ball screw, one end of the second connecting rod is rotatably connected to the end of the first connecting rod away from the ball screw, the end of the second connecting rod away from the first connecting rod is fixed with the step plate, one end of the third connecting rod is rotatably connected to the mounting shell, and the other end of the third connecting rod is rotatably connected to the end of the second connecting rod away from the first connecting rod.

[0011] By adopting the above technical scheme, the rotation of the ball screw can drive the first connecting rod to swing, and under the action of the third connecting rod, the swinging of the first connecting rod can drive the second connecting rod to extend out of or retract into the mounting shell, thereby driving the step plate to extend out of or retract into the car compartment.

[0012] Optionally, the connecting rod assembly is provided with two groups, the two groups of connecting rod assemblies are symmetrically arranged on both sides of the mounting shell, and a connecting rod is arranged between the two groups of connecting rod assemblies, the connecting rod is fixed to the end of the first connecting rod away from the mounting shell, and the connecting rod is rotatably connected to the end of the second connecting rod away from the step plate.

[0013] By adopting the above technical scheme, the two groups of connecting rod assemblies are fixed through the connecting rod, thereby improving the structural strength of the connecting rod assembly and the structural strength of the entire driving mechanism.

[0014] Optionally, a telescopic rod is arranged between the connecting rod and the mounting shell, one end of the telescopic rod is rotatably connected to the connecting rod, and the other end of the telescopic rod is rotatably connected to the mounting shell.

[0015] By adopting the above technical scheme, the telescopic rod is arranged between the connecting rod and the mounting shell, thereby improving the connection strength of the connecting rod and the mounting shell and the connection strength of the connecting rod assembly and the mounting shell.

[0016] Optionally, a first abutting groove is formed in the side of the third connecting rod close to the first connecting rod, and after the step plate is retracted, the groove wall of the first abutting groove on the third connecting rod abuts against the first connecting rod.

[0017] By adopting the above technical scheme, after the step plate is retracted, the groove wall of the first abutting groove on the third connecting rod abuts against the first connecting rod, thereby preventing the step plate from colliding with the mounting shell and improving the service life of the step plate.

[0018] Optionally, a second abutting groove is formed in the side of the third connecting rod close to the first connecting rod, and after the step plate is extended, the groove wall of the second abutting groove on the third connecting rod abuts against the first connecting rod.

[0019] By adopting the above technical scheme, after the step plate is extended, the second abutting groove wall on the third connecting rod abuts on the first connecting rod, so that the first connecting rod and the two side walls of the second abutting groove on the third connecting rod interact, the force transmitted from the step plate to the cylinder is reduced, and the cylinder can be better protected.

[0020] Optionally, a guide rod is fixed in the mounting shell, and the driving plate is slidingly connected to the guide rod.

[0021] By adopting the above technical scheme, the guide rod can guide the sliding of the driving plate, the radial force of the cylinder in extension and retraction is reduced, and the service life of the cylinder is prolonged.

[0022] Optionally, anti-skid lines are arranged on the step plate.

[0023] By adopting the above technical scheme, the anti-skid performance of the step plate is improved.

[0024] Optionally, mounting holes are formed in the two sides of the mounting shell.

[0025] By adopting the above technical scheme, the mounting shell can be fixed to the carriage through bolts.

[0026] Optionally, a pressure sensor is mounted on the step plate, and the pressure sensor is connected to the control switch of the cylinder.

[0027] By adopting the above technical scheme, when a person stands on the step plate, the step plate will not be retracted, and the safety of the step plate is improved.

[0028] In summary, the present application has at least one of the following beneficial technical effects:

[0029] The cylinder can drive the driving plate and the ball sleeve to move, the movement of the ball sleeve can drive the ball screw to rotate, the rotation of the ball screw can drive the connecting rod assembly to extend or retract the step plate into the carriage, passengers can get on or off the vehicle conveniently, the cylinder is used instead of the motor to drive, the waterproof capability of the vehicle step structure is improved, and the service life of the vehicle step structure is prolonged.

[0030] The rotation of the ball screw can drive the first connecting rod to swing, and under the action of the third connecting rod, the swinging of the first connecting rod can drive the second connecting rod to extend or retract into the mounting shell, so as to drive the step plate to extend or retract into the carriage.

[0031] After the step plate is extended, the second abutting groove wall on the third connecting rod abuts on the first connecting rod, so that the first connecting rod and the two side walls of the second abutting groove on the third connecting rod interact, the force transmitted from the step plate to the cylinder is reduced, and the cylinder can be better protected. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is the overall structure schematic diagram of the application when the step board is stored.

[0033] Figure 2 is the structure schematic diagram of the application for the driving assembly.

[0034] Figure 3 is the overall structure schematic diagram of the application when the step board is extended.

[0035] Reference signs: 1, mounting shell; 11, guide rod; 12, mounting hole; 2, step board; 21, anti-skid pattern; 3, driving assembly; 31, air cylinder; 32, driving plate; 33, ball sleeve; 34, ball screw; 4, connecting rod assembly; 41, first connecting rod; 42, second connecting rod; 43, third connecting rod; 431, first abutting groove; 432, second abutting groove; 5, connecting rod; 6, telescopic rod. DETAILED DESCRIPTION

[0036] The following will be described in detail with reference to the accompanying drawings. Figures 1-3 The application will be further described in detail.

[0037] The application embodiment discloses a vehicle step structure. Referring to Figure 1 and Figure 2 , a vehicle step structure comprises a mounting shell 1, a step board 2 and a driving mechanism. The mounting shell 1 is installed at the bottom of the entrance and exit of the vehicle compartment. The step board 2 is used for passengers to step on, thereby facilitating passengers to get on and off the vehicle. The driving mechanism is used for driving the extension or retraction of the step into the vehicle compartment.

[0038] Referring to Figure 1 and Figure 2 , six mounting holes 12 are symmetrically arranged on the upper surface of the mounting shell 1. The mounting holes 12 are used for fixing the mounting shell 1 on the vehicle compartment by bolts. The guide rod 11 is fixed between the two opposite inner side walls of the mounting shell 1 and arranged horizontally.

[0039] Referring to Figure 1 and Figure 2 , the driving mechanism comprises a driving assembly 3, a connecting rod assembly 4, a connecting rod 5 and a telescopic rod 6. The driving assembly 3 comprises an air cylinder 31, a driving plate 32, a ball sleeve 33 and a ball screw 34. The air cylinder 31 is fixed in the mounting shell 1, and the driving direction of the air cylinder 31 is parallel to the guide rod 11. The driving plate 32 is fixed at the telescopic end of the air cylinder 31, and the driving plate 32 is slidingly connected to the guide rod 11. The ball sleeve 33 is fixed to the driving plate 32, and the ball sleeve 33 is connected to the ball screw 34 through balls. The ball screw 34 is rotationally connected to the two opposite side walls of the mounting shell 1. When the air cylinder 31 is started, the air cylinder 31 can drive the driving plate 32 and the ball sleeve 33 to move, and the movement of the ball sleeve 33 can drive the ball screw 34 to rotate.

[0040] Referring to Figure 1And Figure 2 The linkage assembly 4 is provided with two groups, and the two groups of linkage assemblies 4 are symmetrically connected at both ends of the ball screw 34. The linkage assembly 4 comprises a first linkage 41, a second linkage 42 and a third linkage 43. One end of the first linkage 41 is fixed at the end of the ball screw 34. One end of the second linkage 42 is rotatably connected to the first linkage 41 away from the ball screw 34, and the end of the second linkage 42 away from the first linkage 41 is fixed to the step plate 2. One end of the third linkage 43 is rotatably connected to the mounting shell 1, and the other end of the third linkage 43 is rotatably connected to the end of the second linkage 42 away from the first linkage 41. The rotation of the ball screw 34 can drive the first linkage 41 to swing, and under the action of the third linkage 43, the swinging of the first linkage 41 can drive the second linkage 42 to extend or retract into the mounting shell 1, thereby driving the step plate 2 to extend or retract into the car compartment.

[0041] Referring to Figure 1 And Figure 3 A first abutting groove 431 is formed on the side of the third linkage 43 close to the first linkage 41. After the step plate 2 is retracted, the groove wall of the first abutting groove 431 on the third linkage 43 abuts against the first linkage 41. So that the step plate 2 cannot collide with the mounting shell 1, and the service life of the step plate 2 is improved. A second abutting groove 432 is formed on the side of the third linkage 43 close to the first linkage 41. After the step plate 2 is extended, the groove wall of the second abutting groove 432 on the third linkage 43 abuts against the first linkage 41. So that the first linkage 41 interacts with the two side walls of the second abutting groove 432 on the third linkage 43, reducing the force transmitted from the step plate 2 to the cylinder 31, which can better protect the cylinder 31.

[0042] Referring to Figures 1-3 The connecting rod 5 is located between the two groups of linkage assemblies 4. The connecting rod 5 is fixed at the ends of the two first linkages 41 away from the mounting shell 1. And the connecting rod 5 is rotatably connected to the ends of the two second linkages 42 away from the step plate 2. The setting of the connecting rod 5 improves the structural strength of the two groups of linkage assemblies 4, and further improves the connection strength of the driving mechanism. The telescopic rod 6 is provided with two, and the two telescopic rods 6 are symmetrically distributed between the connecting rod 5 and the mounting shell 1. One end of the telescopic rod 6 is rotatably connected to the connecting rod 5, and the other end of the telescopic rod 6 is rotatably connected to the bottom of the mounting shell 1. The setting of the telescopic rod 6 improves the connection strength of the connecting rod 5 and the mounting shell 1, thereby improving the connection strength of the linkage assembly 4 and the mounting shell 1.

[0043] Referring to Figures 1-3 The upper surface of the step plate 2 is provided with a plurality of groups of anti-skid lines 21 distributed at intervals. The anti-skid performance of the step plate 2 is improved. The step plate 2 is provided with a pressure sensor connected to the control switch of the cylinder 31. The step plate 2 is provided with an induction sensor connected to the control switch of the cylinder 31. When someone stands on the step plate 2, the step plate 2 will not be retracted, which improves the safety of the step plate 2.

[0044] The implementation principle of the vehicle step structure embodiment of the present application is as follows: when the step plate 2 needs to be extended or retracted, the air cylinder 31 is started, the air cylinder 31 can drive the driving plate 32 and the ball sleeve 33 to move, the movement of the ball sleeve 33 can drive the ball screw 34 to rotate. The rotation of the ball screw 34 can drive the first connecting rod 41 to swing, under the action of the third connecting rod 43, the swinging of the first connecting rod 41 can drive the second connecting rod 42 to extend or retract into the mounting shell 1, thereby driving the step plate 2 to extend or retract into the vehicle compartment. The air cylinder 31 is used instead of the motor drive, which improves the waterproof capability of the vehicle step structure, thereby improving the service life of the vehicle step structure.

[0045] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, so: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A vehicle step structure characterized by: Including installation shell (1), step board (2) and drive mechanism, the installation shell (1) is installed at the bottom of the entrance and exit of the carriage, and the drive mechanism includes drive assembly (3) and connecting rod assembly (4); The drive assembly (3) includes cylinder (31), drive plate (32), ball sleeve (33) and ball screw (34), the cylinder (31) is fixed in the installation shell (1), the drive plate (32) is fixed at the telescopic end of the cylinder (31), the ball sleeve (33) is fixed on the drive plate (32), the ball sleeve (33) is connected on the ball screw (34) through the ball, and the ball screw (34) is rotatably connected in the installation shell (1);The incoming end of the connecting rod assembly (4) is fixed on the ball screw (34), and the outgoing end of the connecting rod assembly (4) is fixed with the fixed step board (2).

2. The vehicle step structure of claim 1, wherein: The connecting rod assembly (4) includes first connecting rod (41), second connecting rod (42) and third connecting rod (43), one end of the first connecting rod (41) is fixed on the ball screw (34), one end of the second connecting rod (42) is rotatably connected to the end of the first connecting rod (41) away from the ball screw (34), the end of the second connecting rod (42) away from the first connecting rod (41) is fixed with the step board (2), and one end of the third connecting rod (43) is rotatably connected to the installation shell (1), and the other end of the third connecting rod (43) is rotatably connected to the end of the second connecting rod (42) away from the first connecting rod (41).

3. The vehicle step structure of claim 2, wherein: The connecting rod assembly (4) is provided with two groups, and the two groups of connecting rod assemblies (4) are symmetrically arranged on both sides of the installation shell (1), and a connecting rod (5) is arranged between the two groups of connecting rod assemblies (4), the connecting rod (5) is fixed at the end of the first connecting rod (41) away from the installation shell (1), and the connecting rod (5) is rotatably connected to the end of the second connecting rod (42) away from the step board (2).

4. The vehicle step structure of claim 3, wherein: The connecting rod (5) and the installation shell (1) are provided with a telescopic rod (6), one end of the telescopic rod (6) is rotatably connected to the connecting rod (5), and the other end of the telescopic rod (6) is rotatably connected to the installation shell (1).

5. The vehicle step structure of claim 2, wherein: The first abutting groove (431) is formed in the side of the third connecting rod (43) close to the first connecting rod (41), and after the step board (2) is stored, the groove wall of the first abutting groove (431) on the third connecting rod (43) abuts on the first connecting rod (41).

6. The vehicle step structure of claim 2, wherein: The second abutting groove (432) is formed in the side of the third connecting rod (43) close to the first connecting rod (41), and after the step board (2) is extended, the groove wall of the second abutting groove (432) on the third connecting rod (43) abuts on the first connecting rod (41).

7. The vehicle step structure of claim 1, wherein: The installation shell (1) is fixed with a guide rod (11), and the drive plate (32) is slidably connected to the guide rod (11).

8. The vehicle step structure of claim 1, wherein: The step board (2) is provided with anti-skid lines (21).

9. The vehicle step structure of claim 1, wherein: The installation shell (1) is provided with mounting holes (12) on both sides.

10. The vehicle step structure of claim 1, wherein: The step board (2) is provided with a pressure sensor, and the pressure sensor is connected with the control switch of the cylinder (31).

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