CN216069811U

CN216069811U - Side is marked time and car

Info

Publication number: CN216069811U
Application number: CN202122874256.3U
Authority: CN
Inventors: 钟杰; 张静旭
Original assignee: SAIC Motor Corp Ltd
Current assignee: SAIC Motor Corp Ltd
Priority date: 2021-11-22
Filing date: 2021-11-22
Publication date: 2022-03-18
Anticipated expiration: 2031-11-22

Abstract

The utility model discloses a side step and an automobile, wherein a step strut assembly of the side step is provided with a first connecting end and a second connecting end, the power output ends of two linear driving mechanisms are respectively hinged, one end of the step is fixedly connected with the second connecting end of the step strut assembly, and can be switched between an overhanging working position and a vertical working position with the step strut assembly, and the steps are configured as follows: the two linear driving mechanisms extend outwards in the same amplitude, and the stepping support rod assembly drives the stepping to switch to an extending working position in a horizontal posture; the overhanging amplitude of the power output end of the first linear driving mechanism is larger than that of the power output end of the second linear driving mechanism, and the stepping support rod assembly drives the stepping to rotate and switch to a vertical working position in a vertical posture. By applying the scheme, the wind resistance coefficient of the whole vehicle is reduced when the vehicle runs at a high speed, so that the oil consumption of the vehicle in the high-speed running process can be reduced, or the driving range of a pure electric vehicle type can be increased.

Description

Side is marked time and car

Technical Field

The utility model relates to the technical field of automobiles, in particular to a side step and an automobile.

Background

In the prior art, the vehicle side step mainly has two kinds: one type is a fixed type side step, the side step is fixed with a vehicle body, and no motion relation exists; the other type is an electric side step, according to the requirement of functions, the horizontal extension or folding of the step is completed through the motor control executing mechanism, the step can automatically extend outwards under the opening state of the vehicle door, the passengers can get on or off the vehicle conveniently, and the step can automatically retract inwards in the running process of the vehicle.

Limited by the structure of the electric side step, the existing electric side step moves along the horizontal direction to realize the functions, and the functions are only limited to the convenience of passengers getting on or off the vehicle.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a side step and an automobile, wherein the movement form of the electric step is changed through structural optimization, so that the resistance reducing effect in the high-speed running process of the automobile is achieved.

The utility model provides a side step which comprises two linear driving mechanisms, a step strut assembly and a step; the two linear driving mechanisms transmit linear displacement driving force through power output ends respectively; the stepping strut assembly is provided with a first connecting end and a second connecting end, the first connecting end is hinged with the power output end of the first linear driving mechanism, and the second connecting end is hinged with the power output end of the second linear driving mechanism; one end of marking time with the second link fixed connection of branch subassembly of marking time to can with the branch subassembly of marking time switches between overhanging work position and vertical work position, and the configuration is: the two linear driving mechanisms extend outwards in the same amplitude, and the step is driven by the step strut assembly to be switched to the extending working position in a horizontal posture; the overhanging amplitude of the power output end of the first linear driving mechanism is larger than that of the power output end of the second linear driving mechanism, and the mark time is driven by the mark time support rod assembly to rotate and switch to the vertical working position in a vertical posture.

Optionally, the stepping device may further switch to an adduction working position with the stepping strut assembly, and be configured to: the two linear driving mechanisms are adducted in the same amplitude, and the treading is driven by the treading strut assembly to be switched to an adduction working position in a horizontal posture.

Optionally, the stepping strut assembly comprises a first strut and a second strut, the first strut is arranged along a first direction, the second strut is arranged along a second direction, and one end of the first strut and one end of the second strut are hinged; the first connecting end is formed at the other end of the first supporting rod, and the second connecting end is formed at the other end of the second supporting rod.

Optionally, the stepping strut assembly further comprises an elastic restoring member disposed between the first strut and the second strut and configured to: when the stepping rotation is switched to the vertical working position, the elastic reset piece can deform according to the change of the relative positions of the first supporting rod and the second supporting rod, and reset acting force is provided.

Optionally, each of the two linear driving mechanisms is configured to include a driving part and a transmission part, and the transmission part is in transmission connection with the corresponding driving part and converts the driving force of the driving part into the linear displacement driving force.

Optionally, the driving part is a motor, and the transmission part comprises a nut and a screw rod which are matched, wherein the periphery of the nut is provided with driven external teeth meshed with an output gear of the motor, and the power output end is formed at the end part of the corresponding screw rod.

The utility model also provides an automobile which comprises the side steps arranged on two sides of the automobile body, wherein the side steps are the side steps.

Optionally, the vehicle speed control system further comprises a control unit and a first detection unit, wherein the control unit outputs a control instruction to a control end of the linear driving mechanism according to the current vehicle speed acquired by the first detection unit.

Optionally, the vehicle door control system further comprises a second detection unit, and the control unit outputs a control instruction to the control end of the linear driving mechanism according to the current vehicle speed acquired by the first detection unit and the current vehicle door state acquired by the second detection unit.

Aiming at the control requirement of the wind resistance coefficient of the whole vehicle, the scheme innovatively provides a solution for reducing the wind resistance by changing the position and the angle state of the side stepping. Specifically, the two linear driving mechanisms extend outwards in the same amplitude, and the stepping strut assemblies drive the stepping to be switched to the extending working positions in a horizontal posture, so that passengers or drivers of the vehicle can get on or off the vehicle smoothly; based on the hinging between the power output ends of the stepping strut assembly and the two linear driving mechanisms and the driving mode that the power output end of the first linear driving mechanism extends outwards to a greater extent than the power output end of the second linear driving mechanism, the stepping strut assembly can be driven to step and rotate and is switched to a vertical working position in a vertical posture. So set up, be located marking time of vertical work position and can construct and form automobile body side air current baffle, can effectively reduce the air current flow that the automobile body side got into vehicle chassis to reduce whole car windage coefficient when the vehicle is gone at high speed, and then can reduce the in-process oil consumption of vehicle at high-speed travel, or increase the range of driving of pure electric vehicle type.

In an alternative aspect of the utility model, the step strut assembly includes first and second struts that are hinged and each disposed in a different direction. Therefore, in the process of switching to the vertical working position, the first supporting rod and the second supporting rod which are hinged with each other can rotate adaptively, so that the actuating performance of stepping posture change is improved. Furthermore, an elastic reset piece can be arranged between the first supporting rod and the second supporting rod, and when the driving step is switched to the vertical working position in a rotating mode, the elastic reset piece can deform according to the change of the relative position of the first supporting rod and the second supporting rod and provide reset acting force; that is to say, produce relative rotation at first branch and second branch in the removal process, can reset when reaching vertical work position to provide the effort of restoring to the throne by the elasticity piece that resets, ensure to mark time and switch to vertical gesture fast.

Drawings

FIG. 1 is a schematic view of the side step in the retracted position in accordance with one embodiment;

FIG. 2 is a schematic side step structure of the device shown in FIG. 1 in the adduction working position;

FIG. 3 is a schematic view of the side step in an extended position according to an embodiment;

FIG. 4 is a schematic view of the side step in the extended working position shown in FIG. 3;

FIG. 5 is a schematic view of the side step in the vertical working position according to the embodiment;

FIG. 6 is a schematic structural view of the side step shown in FIG. 5 in the vertical working position;

FIG. 7 is a control block diagram of the side step in the embodiment.

In the figure:

the device comprises a first linear driving mechanism 1, a motor 11, an output gear 111, a nut 121, a lead screw 122, a second linear driving mechanism 2, a motor 21, an output gear 211, a nut 221, a lead screw 222, a step strut assembly 3, a first strut 31, a second strut 32, an elastic resetting piece 33, a step 4, a hinge shaft 5, a hinge shaft 6, a hinge shaft 7, a control unit 8, a first detection unit 9 and a second detection unit 10.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

Without loss of generality, the embodiment takes the steps shown in the figures as a description main body, and describes a side step scheme with an auxiliary function of reducing the wind resistance of the whole vehicle in detail. It should be understood that the specific implementation of the steps, such as the size, shape, material selection, etc., is not the core invention of the present application, and does not substantially limit the claimed side steps.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic view illustrating a usage state of a side step in the present embodiment, and fig. 2 is a schematic view illustrating a structure of the side step in the present embodiment. Based on the side step, the working position can be adjusted as required, the working posture of the step can be changed, and the side step shown in fig. 1 and fig. 2 is in the inward contraction working position.

The side step adopts two linear driving mechanisms (1, 2) to provide and transmit linear displacement driving force for switching working positions, and the step strut assembly 3 is used as a transition member to drive the step 4 to realize switching of the working positions.

As shown in fig. 2, the power output end of the first linear driving mechanism 1 is hinged to the first connecting end of the stepping strut assembly 3, and the power output end of the second linear driving mechanism 2 is hinged to the second connecting end of the stepping strut assembly 3. Wherein, the one end of 4 marking times is fixed at the second link of branch subassembly 3 of marking time to can change the operating posture in step along with the position change of the branch subassembly 3 second link of marking time.

According to the actual use needs, the side that this scheme provided is marked time changeable in adduction work position, overhanging work position and vertical work position between. Please refer to fig. 3, 4, 5 and 6, wherein fig. 3 is a schematic view illustrating a usage status of the side step in the extended working position in the present embodiment, fig. 4 is a schematic view illustrating a structure of the side step in the extended working position shown in fig. 3, fig. 5 is a schematic view illustrating a usage status of the side step in the vertical working position in the present embodiment, and fig. 6 is a schematic view illustrating a structure of the side step in the vertical working position shown in fig. 5.

For example, but not limited to, when the vehicle speed is 0km/h and the door is open, the step may be switched to the horizontal overhanging state shown in fig. 3 and 4, so that the vehicle passenger or driver can get on or off the vehicle smoothly; when the vehicle speed is more than 0km/h and less than 60km/h, the step can be switched to the horizontal adduction state shown in the figures 1 and 2, and the trafficability characteristic of the vehicle is not influenced; when the vehicle speed is higher than 60km/h, the step can be switched to the vertical extension state shown in fig. 5 and 6, and can be used as a vehicle body side airflow baffle plate for high-speed running of the vehicle, so that the airflow flow entering a vehicle chassis from the side of the vehicle body is effectively reduced, and the wind resistance coefficient of the whole vehicle is reduced.

In the present embodiment, the first linear drive mechanism 1 and the second linear drive mechanism 2 are each configured to: comprises a driving part and a transmission part consisting of a nut and a screw rod. Among them, the driving means preferably employs a motor having an output gear as an output member.

As shown in fig. 2, the motor 11 of the first linear drive mechanism 1 outputs a rotational driving force via the output gear 111, and a transmission member including a nut 121 and a lead screw 122 is converted into a linear displacement driving force. Here, the nut 121 has driven external teeth on its outer periphery which mesh with the output gear 111 of the motor 11, and the power output end of the first linear drive mechanism 1 is formed at the end of the screw 122. As shown in the figure, the first end of the stepping strut assembly 3 is hinged with the screw rod 122 through a hinge shaft 5.

Similarly, the motor 21 of the second linear drive mechanism 2 outputs a rotational driving force via the output gear 211, and a transmission member including the nut 221 and the lead screw 222 is converted into a linear displacement driving force. Here, the nut 221 has driven external teeth on the outer circumference thereof, which are engaged with the output gear 211 of the motor 21, and the power output end of the second linear drive mechanism 2 is formed at the end of the lead screw 222. The second end of the stepping strut assembly 3 is hinged with the lead screw 222 through a hinge shaft 6.

Based on the motor drive, the first linear driving mechanism 1 and the stepping strut assembly 3 are adducted in the same amplitude, and the stepping 4 can be driven to be switched to an adduction working position shown in fig. 1 in a horizontal posture by the translation of the stepping strut assembly 3; when the first linear driving mechanism 1 and the stepping strut assembly 3 extend outwards in the same amplitude, the stepping 4 can be driven to switch to the extending working position shown in fig. 3 in a horizontal posture by the translation of the stepping strut assembly 3.

On the basis, the overhanging range of the power output end of the first linear driving mechanism 1 is larger than that of the power output end of the second linear driving mechanism 3, and the step 4 can be driven to rotate and switch to the vertical working position in which the vertical posture is shown in fig. 5 by rotating the step support rod component 3 around the hinging shaft 6 of the step support rod component and the second linear driving mechanism 3. It should be noted that the vertical working position can be switched based on the retracted working position shown in fig. 2, and can also be switched based on the extended working position shown in fig. 3, and it is within the scope of the present application as long as the reduction of the flow rate of the airflow entering the vehicle chassis from the side of the vehicle body can be achieved.

In specific application, the rotation of the stepping strut assembly 3 around the hinge shaft 6 of the stepping strut assembly and the second linear driving mechanism 3 can be controlled only by the motor 11 driving the screw rod 122 to extend outwards, and can also be controlled by the motor 12 to act in a matching way, so that the rotation of the stepping strut assembly 3 is controlled integrally through the extension amplitude difference between the two.

It is understood that in other embodiments, the first linear driving mechanism 1 and the second linear driving mechanism 2 may adopt other power sources and transmission manners as long as the functional requirements of providing the linear displacement driving force can be met.

In order to further improve the actuation performance of the stepping posture change, the stepping strut assembly 3 comprises a first strut 31 and a second strut 32, wherein the first strut 31 is arranged along the horizontal direction, namely, along the first direction; the second support rod 32 is arranged along the vertical direction, namely, along the second direction, and one end of the second support rod are hinged; as shown in fig. 2, the two are hinged by means of a hinge shaft 7.

Here, a first connection end connected to the hinge shaft 5 is formed at the other end of the first leg 31, and a second connection end connected to the hinge shaft 6 is formed at the other end of the second leg 32. In the process of switching to the vertical working position, the first supporting rod 31 and the second supporting rod 32 which are hinged with each other can rotate adaptively, so that the actuation performance of stepping posture change is improved.

That is, the screw 122 is movably connected to the first rod 31 through the hinge shaft 5, the first rod 31 is movably connected to the second rod 32 through the hinge shaft 7, and the screw 222 is movably connected to the second rod 32 through the hinge shaft 6. Of course, the step 4 and the second pole 32 are also movably connected in a rotatable manner based on the fixed connection relationship between the step 4 and the second pole 32.

In addition, the stepping strut assembly 3 further includes an elastic restoring member 33 disposed between the first strut 31 and the second strut 32, and configured to: when the drive step 4 is rotated to be switched to the vertical working position, the elastic restoring member 33 can be deformed according to the relative position change of the first supporting rod 31 and the second supporting rod 32, and provides restoring force. During operation, the first support rod 31 and the second support rod 32 rotate relatively during movement, and can be reset when reaching the vertical working position, and the elastic reset piece 33 provides reset force to ensure that the step 4 is quickly switched to the vertical posture.

In addition to the side steps, the present embodiment also provides an automobile, which includes the side steps disposed on two sides of the automobile body. It should be understood that other functions of the automobile are not the core invention of the present application, and those skilled in the art can implement the functions based on the prior art, so that the detailed description is omitted here.

Referring to fig. 7, a control block diagram of the side step in the present embodiment is shown.

In this embodiment, the vehicle further includes a control unit 8 and a first detection unit 9, where the first detection unit 9 is configured to detect a current vehicle speed, so that the control unit 8 outputs a control command to a control end (control end of the motor 11 and the motor 21) of the linear driving mechanism according to the current vehicle speed collected by the first detection unit 9. For example, but not limited to, when the vehicle speed is greater than 0km/h and less than 60km/h, a control command is output so that the step is switched to the horizontal adduction state shown in fig. 1 and 2; when the vehicle speed is greater than 60km/h, a control command is output such that the stepping is switched to the vertically extended state as shown in fig. 5 and 6.

Further, the present embodiment further includes a second detecting unit 10, where the second detecting unit 10 is used for detecting the current vehicle door state, so that the control unit 8 outputs a control command to the control end (the control end of the motor 11 and the control end of the motor 21) of the linear driving mechanism according to the current vehicle speed detected by the first detecting unit 9 and the current vehicle door state detected by the second detecting unit 10.

For example, but not limiting of, when the vehicle speed is 0km/h and the door is open, the control command is output such that the step may be switched to the horizontal overhanging state shown in fig. 3 and 4.

Through production trial production, use this scheme the side is marked time, can effectively reduce whole car windage coefficient, specifically test data as follows.

The first embodiment is as follows:

based on a fuel SUV vehicle model, when the vehicle speed is higher than 60km/h, the electric stepping actuator changes the side stepping into a vertical extension state, the wind resistance coefficient of the whole vehicle is reduced by 0.006, and the oil consumption of 120km/h constant-speed driving can be reduced by 0.1L/100 km;

example two:

based on a pure SUV vehicle type, when the vehicle speed is higher than 60km/h, the side step is changed into a vertically extending state through an actuating mechanism of the electric step, the wind resistance coefficient of the whole vehicle is reduced by 0.005, and the driving range of constant-speed driving at 120km/h can be increased by 9 km.

It should be noted that the form and arrangement of the above-mentioned connecting structures are not limited to the foregoing preferred exemplary descriptions, and may be selected according to the actual size requirement of a specific vehicle model, as long as the core inventive concept of the present application is applied within the scope of the present application.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims

1. A side step, comprising:

the two linear driving mechanisms transmit linear displacement driving force through power output ends respectively;

the stepping support rod assembly is provided with a first connecting end and a second connecting end, the first connecting end is hinged with the power output end of the first linear driving mechanism, and the second connecting end is hinged with the power output end of the second linear driving mechanism;

mark time, its one end with mark time the second link fixed connection of branch subassembly, and can with the branch subassembly of marking time switches between overhanging work position and vertical work position, and the configuration is:

the two linear driving mechanisms extend outwards in the same amplitude, and the step is driven by the step strut assembly to be switched to the extending working position in a horizontal posture;

the overhanging amplitude of the power output end of the first linear driving mechanism is larger than that of the power output end of the second linear driving mechanism, and the mark time is driven by the mark time support rod assembly to rotate and switch to the vertical working position in a vertical posture.

2. The lateral step of claim 1, wherein the step is further switchable with the step strut assembly to an adduction operating position and configured to: the two linear driving mechanisms are adducted in the same amplitude, and the treading is driven by the treading strut assembly to be switched to an adduction working position in a horizontal posture.

3. The side step of claim 1 or 2, wherein the step strut assembly comprises a first strut and a second strut, the first strut is arranged along a first direction, the second strut is arranged along a second direction, and one end of the first strut and one end of the second strut are hinged; the first connecting end is formed at the other end of the first supporting rod, and the second connecting end is formed at the other end of the second supporting rod.

4. The side step of claim 3, wherein the step strut assembly further comprises a resilient return disposed between the first strut and the second strut and configured to: when the stepping rotation is switched to the vertical working position, the elastic reset piece can deform according to the change of the relative positions of the first supporting rod and the second supporting rod, and reset acting force is provided.

5. The side step of claim 1 or 2, wherein the two linear drive mechanisms are each configured to include a drive member and a transmission member, the transmission member being in transmission connection with the respective drive member and converting the drive force of the drive member into the linear displacement drive force.

6. The side step of claim 5, wherein the driving component is a motor, and the transmission component comprises a screw nut and a screw rod, wherein the screw nut is provided with driven external teeth meshed with an output gear of the motor on the periphery, and the power output end is formed at the end of the corresponding screw rod.

7. An automobile comprising side steps arranged on two sides of an automobile body, wherein the side steps are as claimed in any one of claims 1 to 6.

8. The automobile according to claim 7, further comprising a control unit and a first detection unit, wherein the control unit outputs a control command to a control end of the linear driving mechanism according to the current speed collected by the first detection unit.

9. The automobile according to claim 8, further comprising a second detection unit, wherein the control unit outputs a control command to a control end of the linear driving mechanism according to the current vehicle speed acquired by the first detection unit and the current door state acquired by the second detection unit.