KR102498171B1 - Driving force transmission device that blocks the transmission of forces other than its own driving force, and auxiliary footrest system for vehicle including the same - Google Patents

Abstract

Disclosed are a driving force transmission device and an auxiliary footrest system for a vehicle including the same, which can increase safety of movements and prevent a misoperation by shocks applied from the outside, not self-powered source, thereby reducing accidents. To this end, the driving force transmission device includes: a motor bracket; a driving unit which is installed in the motor bracket; a power transmission shaft which is assembled in the motor bracket and is connected to the driving unit to axially rotate by a driving force transmitted from the driving unit; a motor link which has one end connected to the power transmission shaft to rotate around the power transmission shaft; a link stopper which is installed on an upper surface of the motor bracket located on a forward rotation stop point of the motor link; a rotation link which has one end assembled with the other end of the motor link with a first hinge so that the motor link has an angle of 180° or more with the link stopper in between; a communication link which has one end assembled with the other end of the rotation link with a second hinge to rotate through the rotation link in the same direction as the motor link; a rotation rod which is assembled to the other end of the communication link in a vertical direction to provide a rotation central shaft of the communication link; and an arm block which is coupled to the rotation rod to communicate with the rotation rod to rotate around the rotation rod. According to the present invention, the arm block, which is an output shaft, is moved only by a driving force provided from a self-powered source, and a movement of the arm block by external force except for the driving force is blocked.

Description

A driving force transmission device that blocks transmission of force other than its own driving force and an auxiliary scaffolding system of a vehicle including the same

The present invention relates to a driving force transmission device that provides a function of blocking transmission of external force other than its own driving force, and to an auxiliary footrest system for a vehicle including the same, and more particularly, to an auxiliary footrest system for a vehicle that enhances the safety of movement and is applied from the outside rather than its own power source. It relates to a driving force transmission device capable of reducing the occurrence of safety accidents by preventing malfunction due to impact, and an auxiliary footrest system for a vehicle including the same.

2. Description of the Related Art In countries where the income level of the people is high and the automobile industry is developed, such as in developed countries, the population enjoying leisure activities such as auto camping is rapidly increasing. As the population enjoying leisure activities such as auto-camping increases rapidly, the sales volume of multi-purpose vehicles such as SUVs, minivans, and camping caravans that can move with various camping equipment sufficiently loaded among the total vehicle sales is increasing.

These SUVs, minivans, camping caravans, etc. are multi-purpose vehicles that cover on-road and off-road, so they have a higher height than ordinary passenger cars, so women, children, and the elderly may experience inconvenience when getting on and off. A lot has happened

In particular, in the case of vans, which are commuting vehicles widely used in daycare centers and academies, since there are many children who are short and young, there is a problem in that they frequently fall and get injured during the process of getting in and out of young children due to the high height. In addition, there was a problem that sometimes caused human damage due to vehicle operation in a state where getting on and off was not completely performed.

Therefore, in recent years, side steps have been installed on the vehicle body to be located at the lower part of the vehicle door in order to solve the inconvenience of passengers getting on and off the vehicle. Since it has an installation range, there is a problem that the occupant cannot secure a sufficient step width for smooth getting on and off.

In other words, the conventional side step is installed in a structure that protrudes at all times, and should be installed so as not to protrude outside the width of the vehicle body to avoid interference with various obstacles while driving, so that the step width is sufficient for passengers to get on and off smoothly. will not be able to provide

Therefore, when the occupant steps on the side step and gets on and off the vehicle, the occupant has to get on and off the vehicle while stepping on the side step only on the front or rear part of the foot. there is

Moreover, children or the elderly have the inconvenience of getting on and off with the assistance of others due to the limited step width of the side step.

To this end, research is being conducted on the side step that automatically deploys and the driving force transmission device applied to it. There was a problem that the body could lose its balance and cause a safety accident.

Republic of Korea Patent No. 10-1976754 (2019.08.28 announcement) Republic of Korea Patent No. 10-1434861 (2014.09.02 announcement) Republic of Korea Patent Registration No. 10-1419737 (Announced on July 17, 2014) Republic of Korea Patent Registration No. 10-1761841 (Announced on July 26, 2017) Republic of Korea Patent Registration No. 10-1932914 (Announced on December 27, 2018)

Accordingly, a first object of the present invention is to provide a driving force transmission device that rotates an arm block only by a driving force provided from its own driving unit and prevents movement of the arm block even when an external force other than the driving unit acts on the arm block.

In addition, a second object of the present invention is to help the elderly or children get on and off more easily and safely by improving the entry and exit structure of a vehicle with a high height when the vehicle is stopped without being exposed to the outside of the vehicle body while the vehicle is running, It is an object of the present invention to provide an auxiliary footrest system for a vehicle in which movement of an arm block by an external force applied to an arm block connected to an auxiliary footrest is blocked.

In order to achieve the above-described first object of the present invention, in one embodiment of the present invention, a motor bracket, a driving unit installed on the motor bracket to provide a driving force, and assembled to the motor bracket and connected to the driving unit from the driving unit A power transmission shaft that rotates by the transmitted driving force, a motor link having one end connected to the power transmission shaft and rotating around the power transmission shaft, and a motor link so that the motor link does not rotate beyond a predetermined forward rotation stop point So that the angle between the link stopper installed on the upper surface of the motor bracket located on the forward rotation stop point of and the motor link located in the direction facing the link stopper when the motor link contacts the link stopper is 180 ° or more A rotary link having one end assembled with the other end of the motor link and the first hinge, and an interlocking link having the other end and one end of the rotary link assembled with the second hinge and rotating in the same direction as the motor link through the rotary link, and the interlocking link It provides a driving force transmission device including a rotating rod assembled in a vertical direction to the other end of the interlocking link to provide a rotational center axis of the interlocking link, and an arm block coupled to the rotating rod to interlock with the rotating rod and rotating around the rotating rod.

In addition, in order to achieve the second object of the present invention, in one embodiment of the present invention, an auxiliary footrest, a rear assembly that rotates by coupling one end of the auxiliary footrest to the lower part of the vehicle body, and a motor bracket disposed at the lower part of the vehicle body And, a driving unit installed on the motor bracket to provide driving force, a power transmission shaft assembled to the motor bracket and connected to the driving unit to rotate by the driving force transmitted from the driving unit, and one end connected to the power transmission shaft A motor link rotating around a power transmission shaft, a link stopper installed on an upper surface of the motor bracket located on a forward rotation stop point of the motor link so that the motor link does not rotate beyond a preset forward rotation stop point, and the motor link A rotary link, one end of which is assembled with the other end of the motor link and the first hinge so that the angle between the link stopper and the motor link located in the direction facing the link stopper is 180 ° or more when in contact with the link stopper, and the other end of the rotary link An interlocking link having an end and one end assembled into a second hinge and rotating in the same direction as the motor link through a rotating link, and a rotating rod assembled to the other end of the interlocking link in a vertical direction to provide a rotation center axis of the interlocking link, and one end of the above It is coupled to the other end of the auxiliary footrest and the other end opposite to the one end is coupled to the rotary rod so that it interlocks with the rotary rod and provides an auxiliary footrest system for a vehicle including a driving force transmission device including an arm block rotating around the rotary rod.

According to the present invention, the arm block, which is an output shaft, is moved only by the driving force provided from its own power source, and the movement of the arm block by external forces other than the driving force is blocked.

In addition, the present invention can reduce the occurrence of safety accidents by preventing malfunctions caused by impacts applied from the outside. In particular, when the driving force transmission device of the present invention is applied to an auxiliary footrest system of a vehicle, a safety accident does not occur even if a physical impact is applied to the auxiliary footrest while the occupant uses the auxiliary footrest.

In addition, since the present invention does not use a rotating belt, stable performance can be provided even after a period of use.

1 and 2 are perspective views showing a driving force transmission device according to the present invention.
3 is a bottom perspective view showing a driving force transmission device according to the present invention.
4 is an exploded perspective view showing a driving force transmission device according to the present invention.
5 is a side view of a vehicle equipped with an auxiliary footrest system according to the present invention.
Figure 6 is a perspective view for explaining the auxiliary scaffolding system according to the present invention.
7 is a cross-sectional view showing an auxiliary scaffold and an arm block according to the present invention.

Hereinafter, referring to the accompanying drawings, a driving force transmitting device (hereinafter, abbreviated as 'driving force transmitting device') for blocking transmission of forces other than its own driving force according to preferred embodiments of the present invention will be described in detail.

1 and 2 are perspective views showing the driving force transmission device according to the present invention, Figure 3 is a bottom perspective view showing the driving force transmission device according to the present invention, Figure 4 is an exploded perspective view showing the driving force transmission device according to the present invention.

1 to 4, the driving force transmitting device according to the present invention includes a motor bracket 110, a driving unit 120 installed on the motor bracket 110 to provide driving force, and a motor bracket 110 A power transmission shaft 130 that is assembled and connected to the driving unit 120 rotates by a driving force transmitted from the driving unit 120, and one end connected to the power transmission shaft 130 to form the power transmission shaft 130 The upper surface of the motor link 140 rotating to the center and the motor bracket 110 located on the forward rotation stop point of the motor link 140 so that the motor link 140 does not rotate beyond the preset forward rotation stop point So that the angle between the link stopper 112 installed in and the motor link 140 located in the direction facing the link stopper 112 when the motor link 140 is in contact with the link stopper 112 is 180 ° or more. The rotation link 150, one end of which is assembled with the other end of the motor link 140 and the first hinge, and the other end and one end of the rotation link 150 are assembled with the second hinge, the motor link through the rotation link 150 An interlocking link 160 rotating in the same direction as 140, a rotating rod 170 assembled to the other end of the interlocking link 160 in a vertical direction to provide a rotation center axis of the interlocking link 160, and the rotating rod ( 170) and includes an arm block 180 that is coupled to the rotating rod 170 and rotates around the rotating rod 170.

Hereinafter, each component of the driving force transmission device 100 will be described in more detail with reference to the drawings.

1 to 4, the driving force transmission device 100 according to the present invention includes a motor bracket 110.

The motor bracket 110 provides an installation space for a drive unit and a power transmission shaft, and may be coupled to an object through a fastening means such as a bolt or coupled to an object through a rotating rod bracket 190 described later.

'형 단면 구조를 갖도록 형성되며, 상기 일측 말단에 조립홀이 형성된다.As one embodiment, the motor bracket 110 according to the present invention is formed to have a block structure as shown in FIG. 1, and a through hole in which the power transmission shaft 130 can be inserted in the vertical direction may be formed. In addition, the motor bracket 110 is formed with an assembly hole into which a fastening means such as a bolt can be assembled at an end in contact with the rotating rod bracket 190. In addition, the motor bracket 110 has one end so that it can be coupled to the side of the rotating rod bracket 190 '

It is formed to have a 'type cross-sectional structure, and an assembly hole is formed at one end.

As another embodiment, the motor bracket 110 according to the present invention is formed to have a flat plate structure, and a through hole in which the power transmission shaft 130 can be inserted in the vertical direction may be formed.

The motor bracket 110 may be made of metal such as aluminum or made of engineering plastic. Here, polycarbonate (PC), nylon (polyamide), polyacetal (POM), modified polyphenylene oxide (mPPO), polybutylene terephthalate (PBT), etc. may be used as engineering plastics. there is.

Referring to FIGS. 1 to 4 , the driving force transmission device 100 according to the present invention may further include a rotation bar bracket 190 .

The rotating rod bracket 190 is installed on the lower part of the vehicle body, is coupled to the motor bracket 110, and has an insertion hole into which the rotating rod 170 is fitted. In addition, the rotation rod bracket 190 may be installed on the lower part of the vehicle body through a fastening means such as a bolt.

The rotation rod bracket 190 provides a space in which the motor bracket 110 can be installed on the side, and provides a space in which the rotation rod 170 can be stably rotated. To this end, the rotating rod bracket 190 is coupled to the motor bracket 110 through fastening means such as bolts.

As one embodiment, the rotating rod bracket 190 according to the present invention is formed to have a square pipe structure as shown in FIG. 4, and a through hole through which the rotating rod 170 can be inserted in the vertical direction may be formed. In addition, the motor bracket 110 is formed with an assembly hole into which a fastening means such as a bolt can be assembled at an end in contact with the rotating rod bracket 190.

Since the rotating bar bracket 190 is formed in a pipe structure, the weight is reduced, and even when an external force is applied from the side, breakage is prevented so that the outer shape can be stably maintained.

As another embodiment, the rotating rod bracket 190 according to the present invention may be formed to have a flat plate structure, and may have a through hole through which the rotating rod 170 may be inserted in the vertical direction.

The rotating bar bracket 190 may be made of metal such as aluminum or engineering plastic. Here, polycarbonate (PC), nylon (polyamide), polyacetal (POM), modified polyphenylene oxide (mPPO), polybutylene terephthalate (PBT), etc. may be used as engineering plastics. there is.

As necessary, as shown in FIG. 4, a bearing assembly 194 supporting the outer circumferential surface of the rotating rod 170 is disposed in the insertion hole of the rotating rod bracket 190 so that the rotating rod 170 can be smoothly rotated, and the rotating rod bracket 190 A bearing housing 196 providing an installation space for the bearing assembly 194 may be installed inside. In this case, the center hole of the bearing housing 196 in which the bearing assembly 194 is installed is located on the same line as the insertion hole of the rotation rod bracket 190.

Referring to FIGS. 1 to 4 , the driving force transmission device 100 according to the present invention includes a driving unit 120 .

The driving unit 120 is installed on the motor bracket 110 and provides a driving force to the power transmission shaft to rotate the power transmission shaft.

As a specific aspect, the drive unit 120 according to the present invention is connected to the drive motor 122, which is provided with a worm on the rotating shaft, and the worm at right angles and is coupled to the rotating shaft to rotate the power transmission shaft 130 with the rotational force of the worm It may be configured to include a driving gear.

If necessary, the drive unit 120 may be provided with a connection bracket 124 for fixing the drive motor 122 to the motor bracket 110. In this connection bracket 124, a seating space for the drive motor 122 is formed in the center so that the drive motor 122 is stably coupled to the motor bracket 110, and bolts passing through the motor bracket 110 at both ends. An assembly hole is formed in which the fastening means of the assembly is assembled.

When the driving force transmission device 100 of the present invention is used as a front assembly of an auxiliary footrest system of a vehicle, the driving unit 120 provides a driving force enabling the auxiliary footrest 200 to move in and out of the vehicle body. The drive unit 120 rotates in the forward direction so that the auxiliary footrest 200 is exposed to the outside of the vehicle body under the control of the control unit when the vehicle is stopped, and the auxiliary footrest 200 is moved outside the vehicle body under the control of the control unit when the vehicle is moving. rotate in the reverse direction to avoid exposure to At this time, if the forward direction is a clockwise direction, the reverse direction becomes a counterclockwise direction, and if the forward direction is a counterclockwise direction, the reverse direction becomes a clockwise direction.

1 to 4, the driving force transmission device 100 according to the present invention includes a power transmission shaft 130.

The power transmission shaft 130 is assembled to the motor bracket 110 and connected to the driving unit 120 so that it can be rotated while being accommodated in the motor bracket 110 without being separated from the motor bracket 110, the driving unit ( 120) rotates the shaft by the driving force transmitted from the shaft.

Specifically, the power transmission shaft 130 has a first body in which an upper part is inserted into a through hole on the bottom surface of the motor bracket 110, a lower part is connected to the driving unit 120, and a first assembly hole is formed in the center, and the through hole A second body having an outer diameter larger than the inner diameter of the through hole to be seated at the top and having a second assembly hole formed in the center, and assembled to the first assembly hole and the second assembly hole, the power transmission shaft 130 can be rotated. It includes a coupling pin for coupling the first body and the second body to the motor bracket 110 so as to be.

If necessary, a sleeve bush may be provided between the power transmission shaft 130 and the motor bracket 110 inserted into the through hole. The sleeve bush provides a function of reducing wear of the power transmission shaft 130 by reducing frictional force generated by rotation of the power transmission shaft 130 .

In addition, a first gear receiving the driving force of the driving unit 120 is provided on the lower part of the first body connected to the driving unit 120, and the power transmission shaft 130 is provided on the upper part of the second body exposed to the outside of the through hole. A first pulley for transmitting rotational force to the motor link 140 may be provided.

Referring to Figures 1 and 2, the driving force transmission device 100 according to the present invention includes a motor link (140).

The motor link 140 has one end connected to the power transmission shaft 130, and rotates around the power transmission shaft 130. These motor links 140 interlock according to the rotation of the power transmission shaft 130.

In addition, the motor link 140 may be formed to have a rod-shaped or flat-shaped structure.

In addition, the motor link 140 may be provided with a fastening protrusion formed with a spiral part at one end so that one end is assembled to the second body of the power transmission shaft 130, preferably the first pulley. The fastening protrusion is coupled to the fastening groove of the first pulley in which the spiral part is formed.

And the motor link 140 may be provided with a hinge assembly hole into which the hinge can be assembled at the other end opposite to one end.

Referring to FIGS. 1 and 2 , the driving force transmission device 100 according to the present invention includes a link stopper 112 .

The link stopper 112 is provided on the upper surface of the motor bracket 110 where the forward rotation stop point of the motor link 140 is located, and the motor link 140 interlocked according to the forward rotation of the power transmission shaft 130 is forward It provides a function of limiting the forward rotation path of the motor link 140 so as not to rotate beyond the rotation stop point.

Specifically, the link stopper 112 is provided on the upper surface of the motor bracket 110 located between the power transmission shaft 130 and the rotating bar 170, to block the rotation of the motor link 140 out of a preset rotation range. It is formed in a block structure with a predetermined thickness. In addition, the link stopper 112 may be formed in a 'c'-shaped or 'c'-shaped structure to make surface contact with the side surface of the motor link 140 so as to prevent damage to the surface in contact with the motor link 140. .

This link stopper 112 blocks reverse rotation of the interlocking link 160 even when an external force for reverse rotation of the interlocking link 160 is provided from the arm block 180 in a state in which the motor link 140 is in contact.

In addition, the link stopper 112 blocks forward rotation of the interlocking link 160 even if an external force for forward rotation of the interlocking link 160 is provided from the arm block 180 in a state in which the motor link 140 is in contact.

Referring to FIGS. 1 and 2 , the driving force transmission device 100 according to the present invention may further include an auxiliary link stopper 114 .

The auxiliary link stopper 114 is installed on the upper surface of the motor bracket 110 located on the reverse rotation stop point of the motor link 140, so that the motor link 140 does not rotate beyond the preset reverse rotation stop point. It provides a function of limiting the reverse rotation path of the link 140.

Specifically, the auxiliary link stopper 114 is provided on the upper surface of the motor bracket 110 located in the opposite direction of the link stopper 112 with respect to the power transmission shaft 130, and the motor link 140 outside the preset rotation range. ) is formed in a block structure with a predetermined thickness to block rotation. In addition, the auxiliary link stopper 114 may be formed in a 'c'-shaped or 'c'-shaped structure to make surface contact with the side surface of the motor link 140 so as to prevent damage to the surface in contact with the motor link 140. there is.

Referring to Figures 1 and 2, the driving force transmission device 100 according to the present invention includes a rotary link (150).

The rotary link 150 forms an angle of 180 ° or more with the motor link 140 in contact with the link stopper 112 so that the motor link 140 does not rotate in the forward or reverse direction even when an external force acts on the arm block 180. By doing, it is rotated in the same direction as the motor link 140 in a non-contact state with the link stopper 112. At this time, the angle between the motor link 140 and the rotating link 150 in contact with the link stopper 112 may be formed at 180 ° to 190 ° in order to stably provide a function of blocking transmission of external force except for its own driving force. And, more preferably, the angle between the motor link 140 and the rotary link 150 in contact with the link stopper 112 is preferably formed at 181 ° to 185 °.

On the other hand, the sandwich angle is an angle located in the direction facing the link stopper among the angles sandwiched between the motor link 140 and the rotation link 150.

The rotating link 150 rotates the other end of the interlocking link 160 so that the interlocking link 160 rotates in the forward direction when the motor link 140 rotates in the forward direction, and when the motor link 140 rotates in the reverse direction. The other end of the interlocking link 160 is rotated so that the interlocking link 160 rotates in the reverse direction.

Specifically, the rotating link 150 has one end assembled with the other end of the motor link 140 and the first hinge 152, and the other end opposite to the one end is the other end of the interlocking link 160 and the second hinge 154 is assembled with To this end, the rotary link 150 has a first hinge assembly hole into which the first hinge 152 is assembled at one end and a second hinge assembly hole into which the second hinge 154 is assembled is formed at the other end. In addition, the rotary link 150 may be formed to have a rod-shaped or flat-shaped structure.

The inner diameter of the first hinge assembly hole may correspond to the outer diameter of the first hinge 152 , and the inner diameter of the second hinge assembly hole may correspond to the outer diameter of the second hinge 154 .

Referring to Figures 1 and 2, the driving force transmission device 100 according to the present invention includes an interlocking link (160).

The interlocking link 160 is assembled with the rotating link and rotates in the same direction as the motor link through the rotating link, and rotates around the rotating rod 170. The interlocking link 160 rotates the rotating rod 170 in the forward and reverse directions while rotating about the rotating rod 170 according to the external force transmitted from the rotating link 150 .

In addition, the interlocking link 160 may be formed to have a bar-shaped or flat-shaped structure.

In addition, the interlocking link 160 may be installed such that one end is assembled to the upper body of the rotating rod 170 or provided between the upper body and the lower body.

As one embodiment, the interlocking link 160 according to the present invention may be provided with one end of a coupling hole through which an assembly pin for coupling the upper body and the lower body passes.

As another embodiment, the interlocking link 160 according to the present invention may have a fastening protrusion having a spiral part formed at one end so as to be assembled to the upper body. This fastening protrusion is coupled to the fastening groove of the upper body in which the spiral part is formed.

Referring to FIGS. 1 and 2 , the driving force transmission device 100 according to the present invention includes a rotating rod 170 .

The rotating rod 170 is assembled to the interlocking link 160 in a vertical direction to provide a central axis of rotation of the interlocking link, and provides a function of rotating the arm block 180 with rotational force transmitted from the driving unit 120.

The rotating rod 170 may be assembled to the rotating rod bracket 190 so as to be rotated while being accommodated in the rotating rod bracket 190 without being separated from the rotating rod bracket 190 .

Specifically, as shown in FIG. 4, the upper portion of the rotating rod 170 is interpolated from the lower surface of the rotating rod bracket 190 to the through hole of the rotating rod bracket 190, the lower portion is coupled to the arm block 180, and a first fastening hole is formed in the center. A lower body, an upper body having an outer diameter larger than the inner diameter of the through hole so as to be seated at the upper end of the through hole and having a second fastening hole formed in the center, and a rotating rod 170 assembled to the first fastening hole and the second fastening hole It may be configured to include an assembly pin that couples the lower body and the upper body to the rotation rod bracket 190 so that the axis can be rotated.

As a specific aspect, the lower body according to the present invention can be fastened to the arm block 180 through a fastening means such as a bolt in a state where the upper surface of the arm block 180 is in contact with the lower surface.

If necessary, a sleeve bush may be provided between the rotating rod 170 inserted into the through hole and the rotating rod bracket 190. The sleeve bush provides a function of reducing wear of the rotating rod 170 by reducing frictional force generated by rotation of the rotating rod 170 .

Referring to FIG. 4 , the driving force transmission device 100 according to the present invention may further include a rotation angle sensor 192 and a controller (not shown).

The rotation angle sensor 192 is installed on the motor bracket 110 so as to face the power transmission shaft 130 and detects the rotation angle of the power transmission shaft 130 to generate rotation angle information. The rotation angle sensor 192 detects the rotation angle of the power transmission shaft 130 or the first pulley so that the motor link 140 can be rotated in a forward or reverse direction in a preset rotation period.

The controller controls the drive unit 120 to rotate the arm block 100 according to an operation signal input from the outside, and is connected to a switch (not shown) and the drive unit 120 that receive the operation signal.

If necessary, the control unit stores the maximum forward and reverse rotation angles of the power transmission shaft 130 and analyzes the rotation angle information provided from the rotation angle detection sensor 192 to determine the maximum forward rotation angle and reverse rotation maximum rotation angle. The driving unit 120 may be controlled so that the power transmission shaft 130 rotates between each.

The driving force transmission device 100 according to the present invention may further include a contact sensor (not shown).

The contact sensor is installed on the link stopper 112 and the auxiliary link stopper 114, and generates a contact signal when the motor link 140 is in contact. Even if an error occurs in the rotation angle information provided from the rotation angle detection sensor 192, when the motor link 140 contacts the link stopper 112 and the auxiliary link stopper 114, the contact sensor operates the driving unit 120. A contact signal is provided to the control unit to stop it. At this time, the control unit stops the operation of the driving unit 120 when the contact signal provided from the touch sensor is received.

5 is a side view of a vehicle in which an auxiliary footrest system according to the present invention is installed, FIG. 6 is a perspective view for explaining the auxiliary footboard system according to the present invention, and FIG. 7 is a cross-sectional view showing an auxiliary footrest and an arm block according to the present invention. .

5 to 7, the auxiliary footrest system of the vehicle including the driving force transmission device according to the present invention (hereinafter, abbreviated as 'auxiliary footrest system') is exposed to the outside of the vehicle when the vehicle is stopped to get on and off. An auxiliary footrest 200 supporting the passenger's feet, a rear assembly that rotates by coupling one end of the auxiliary footrest to the lower part of the vehicle body, and a driving force so that the auxiliary footrest 200 can be rotated inward and outward of the vehicle. and a driving force transmission device 100 for providing and coupling the other end of the auxiliary footrest 200 to the lower part of the vehicle body. At this time, the driving force transmission device 100 is used as a front assembly connected to the other end of the auxiliary footrest unlike the rear assembly.

The auxiliary footrest 200 constituting the auxiliary footrest system of the present invention is exposed to the outside of the vehicle when the vehicle is stopped to support the feet of passengers getting on and off, and may be formed to have a rectangular flat plate structure.

Since the auxiliary foot plate 200 swings and rotates in the horizontal direction, it can be stored in a separate space from the driving force transmission device 100 and the rear assembly 300 at the lower part of the vehicle body, so that the step width is sufficient for the smooth boarding and disembarking of the occupants. can be configured to provide

In addition, the auxiliary footrest 200 is installed so as not to protrude outside the vehicle body width while the vehicle is running, and moves so as to protrude outside the vehicle body width when the vehicle is stopped. In addition, since the auxiliary scaffold 200 must be manufactured to withstand the load transmitted by the occupant, a scaffold plate made of extruded aluminum to meet durability and light weight, and manufactured by injection molding of rubber are installed on the surface of the scaffold plate It can be composed of an anti-slip pad.

The rear assembly 300 constituting the auxiliary scaffold system of the present invention is a second arm connecting the rear assembly 300 and the auxiliary scaffold 200 so that the auxiliary scaffold 200 can be rotated around the rear assembly 300 block 310.

If necessary, the auxiliary scaffold system may further include a second adapter unit 500 provided between the auxiliary scaffold 200 and the second arm block 310 as shown in FIG. 6 .

The second arm block 310 has one end connected to the rotation bar of the rear assembly 300, and the other end opposite to the one end is connected to the auxiliary footrest 200, interlocking with the rotation bar of the rear assembly 300 to rotate the rotation bar rotates around

As a specific aspect, the second arm block 310 according to the present invention may be provided with a plane for stable assembly with the rotating rod on one upper surface, and the upper surface, lower surface, or both of them of the other end opposite to the one end are assisted A flat surface for stable assembly with the scaffold 200 or the second adapter unit 500 may be provided.

The rear assembly 300 couples the second arm block 310 connected to the auxiliary footrest 200 to the lower part of the vehicle body, and together with the driving force transmission device 100 so that the auxiliary footrest 200 maintains a horizontal state with the ground The support of the auxiliary scaffold 200.

As such, the auxiliary footrest system of the present invention installed on the lower surface of the vehicle rotates the auxiliary footrest 200 in and out of the vehicle centered on two places (the driving force transmission device and the rear assembly).

The driving force transmission device 100 constituting the auxiliary scaffolding system of the present invention is a front assembly that includes a motor bracket 110, a driving unit 120, a power transmission shaft 130, a motor link 140, and a link stopper ( 112), a rotating link 150, an interlocking link 160, a rotating bar 170, and an arm block 180. The motor bracket 110, the drive unit 120, the power transmission shaft 130, the motor link 140, the link stopper 112, the rotation link 150, the interlocking link 160, the rotation bar 170, the arm block Since (180) has been described above, duplicate contents are omitted. Hereinafter, the female block 180 is referred to as a first female block 180 to distinguish it from the second female block 310 .

When an external force for rotating the interlocking link 160 in the forward direction is provided from the auxiliary footrest 200, the motor link 140 should be rotated in the forward direction, but when the motor link 140 contacts the link stopper 112, the link Since the stopper 112 blocks forward rotation of the motor link 140 out of a predetermined path, the interlocking link 160 also maintains its current position without being rotated.

When an external force for rotating the interlocking link 160 in the reverse direction is provided from the auxiliary footrest 200 in a state in which the motor link 140 and the auxiliary footrest 200 are unfolded to the outside of the vehicle, the rotation link 150 and the interlocking link ( 160), reverse rotation of the interlocking link 160 is blocked.

In other words, even if an external force is provided from the auxiliary scaffold 200 in a state in which the motor link 140 is in contact with the link stopper 112 due to the connection relationship between the motor link 140, the rotation link 150, and the interlocking link 160 The interlocking link 160 is not rotated, and only when the motor link 140 is rotated in the reverse direction by the driving force transmitted from the driving unit 120, the interlocking link 160 is rotated in the reverse direction.

On the other hand, based on the imaginary line connecting the power transmission shaft 130 and the rotating rod 170, the end of the motor link 140 assembled with the rotating link 150 and in contact with the link stopper 112 is the rotating link 150 ) Since it is formed to be located closer than the end of the assembled interlocking link 160, as shown in FIG. 1, the interlocking link 160 is rotated so that the auxiliary footrest 200 is unfolded to the outside of the vehicle. Even if an external force for reverse rotation of 160 acts on the auxiliary footrest 200, the link stopper 112 blocks the additional forward rotation of the motor link 140, so the reverse rotation of the interlocking link 160 is also blocked.

The control unit controls the driving unit 120 so that the auxiliary footrest 200 is exposed to the outside of the vehicle when the vehicle is stopped. For this purpose, it is installed on the vehicle body to receive a touch signal from a passenger or driver or to receive a signal to open a vehicle door. It is connected to a switch (not shown) for sensing and the driving unit 120 of the driving unit 120. At this time, the switch generates an expansion signal by receiving a touch signal from a passenger or driver or detecting an open signal of a vehicle door, and then provides the expansion signal to a control unit connected by wire or wirelessly.

More specifically, the control unit generates a forward rotation signal so that the drive unit 120 rotates in the forward direction when an extension signal is received from the switch, and provides the forward rotation signal to the drive unit 120 .

In addition, the control unit controls the driving unit 120 so that the auxiliary footrest 200 rotates to an initial position during driving of the vehicle. At this time, the controller generates a closing signal by detecting a touch signal of a passenger or driver or a closing signal of a vehicle door, and then provides the closing signal to the controller.

More specifically, when a closing signal is received from the switch, the control unit generates a reverse signal so that the driving unit 120 rotates in a reverse direction, and provides the reverse signal to the driving unit 120 .

The first arm block 180 has one end connected to the rotating rod 170, the other end opposite to the one end connected to the auxiliary footrest 200, and rotates around the rotating rod 170 in conjunction with the rotating rod 170. do. As a specific aspect, the first arm block 180 according to the present invention may be provided with a plane for stable assembly with the rotary bar 170 on one upper surface, and the upper surface, lower surface, or these of the other end opposite to the one end All may be provided with a flat surface for stable assembly with the auxiliary scaffold 200 or the first adapter unit to be described later.

A first adapter unit 400 may be provided between the auxiliary footrest 200 and the first arm block 180 . The first adapter unit 400 adds a rotation shaft to the other end of the first arm block 180, and includes a hinge 410 provided in a vertical direction at the other end of the first arm block 180 to provide a rotation shaft, The upper plate 420 coupled to the upper part of the hinge 410, the lower plate 430 coupled to the lower part of the hinge 410 and coupled to the auxiliary footrest 200, and the upper plate 420 and the lower plate 430 It includes a side plate 440 provided between the. At this time, the side plate 440 of the first arm block 180 installed between the upper plate 420 and the lower plate 430 through the hinge 410 to prevent damage caused by friction with the first arm block 180. It is preferable to be provided between the upper plate 420 and the lower plate 430 to be spaced apart from the other end.

If necessary, the hinge 410 may include a lower hinge 412, an upper hinge 414, and a rotation pin 416, as shown in FIG.

The lower hinge 412 is inserted into the through-hole of the lower plate 430 and has a first upper body having an assembly groove formed in the center, and an outer diameter larger than the inner diameter of the lower plate through-hole so as to be seated on the lower surface of the lower plate 430, and the first It consists of a first lower body formed under the upper body.

The upper hinge 414 is inserted into the through hole of the upper plate 420 and has a second lower body having an assembly hole formed in the center, and an outer diameter that is wider than the inner diameter of the upper plate through hole so as to be seated on the upper surface of the upper plate 420, and the second It consists of a second upper body formed on the upper part of the lower body.

The rotation pin 416 is coupled to the assembly groove and the assembly hole so that the lower hinge 412 and the upper hinge 414 are coupled, and a spiral portion corresponding to the spiral portion formed in the assembly groove and the assembly hole is formed on the outer circumferential surface.

If necessary, a sleeve bush 460 may be provided between the arm block 180 and the hinge 410 inserted into the upper and lower plate through-holes.

In addition, the first adapter unit 400 has a rectangular parallelepiped shape installed on the lower board 430 and interpolated into the auxiliary scaffold 200 and maintaining a level with the upper surface of the upper plate 420 so that the upper surface of the auxiliary scaffold and the upper surface of the upper plate are maintained horizontally. A balance bar 450 may be further included.

This first adapter unit 400 is connected to the side of the front end of the auxiliary scaffold along the longitudinal direction of the auxiliary scaffold 200 . For example, when the other end of the first arm block 180 is moved to the lower part of the vehicle body, the first adapter unit 400 moves the auxiliary footrest 200 along with the other end of the arm block 180 at the front end of the auxiliary footrest 200. to the lower part of the vehicle body.

In addition, as shown in FIG. 7, the first arm block 180 may have a seating groove 182 centered on the hinge 410 formed on the upper and lower surfaces of the other end inserted into the first adapter unit 400. A packing ring 184 may be provided in the seating groove 182 to block the inflow of dust into the hinge 410 .

Although the above has been described with reference to preferred embodiments of the present invention, those skilled in the art can variously modify and change the present invention without departing from the spirit and scope of the present invention described in the claims below. You will understand that you can.

100: driving force transmission device 110: motor bracket
112: link stopper 114: auxiliary link stopper
120: drive unit 122: drive motor
124: connection bracket 130: power transmission shaft
140: motor link 150: rotation link
152: first hinge 154: second hinge
160: interlocking link 170: rotating bar
180: arm block 182: seating groove
184: packing ring 190: rotating bar bracket
192: rotation angle sensor 194: bearing assembly
196: bearing housing 200: auxiliary footrest
300: rear assembly 310: second arm block
400: first adapter unit 410: hinge
412: lower hinge 414: upper hinge
416: rotation pin 420: top plate
430: lower plate 440: side plate
450: balance bar 460: sleeve bush
500: second adapter unit

Claims (8)

motor bracket;
a driving unit installed on the motor bracket to provide a driving force;
a power transmission shaft assembled to the motor bracket and connected to the driving unit to rotate by a driving force transmitted from the driving unit;
A motor link having one end connected to the power transmission shaft and rotating around the power transmission shaft;
A link stopper installed on an upper surface of the motor bracket located on the forward rotation stop point of the motor link so that the motor link does not rotate beyond a predetermined forward rotation stop point;
When the motor link is in contact with the link stopper so that the motor link is not rotated in the forward or reverse direction even when an external force is applied, one end of the motor link is such that the angle between the link stopper and the motor link located in the opposite direction is 180° or more. A rotating link assembled with the other end and the first hinge;
An interlocking link in which the other end and one end of the rotary link are assembled into a second hinge and rotate in the same direction as the motor link through the rotary link;
A rotation rod assembled to the other end of the interlocking link in a vertical direction to provide a rotation center axis of the interlocking link; and
A driving force transmission device including an arm block coupled to the rotating rod to interlock with the rotating rod and rotating around the rotating rod. According to claim 1,
Coupled to the motor bracket, the driving force transmission device characterized in that it further comprises a rotating bar bracket formed with an insertion hole into which the rotating rod is fitted. According to claim 1,
Based on the virtual line connecting the power transmission shaft and the rotating bar, the end of the motor link assembled with the rotary link and in contact with the link stopper is formed to be located closer than the end of the interlocking link assembled with the rotary link. Characterized in that driving force transmission device. According to claim 1,
The driving force transmission device further comprising an auxiliary link stopper installed on an upper surface of the motor bracket located on a reverse rotation stop point of the motor link so that the motor link does not rotate beyond a preset reverse rotation stop point. According to claim 4,
a rotation angle sensor installed on the motor bracket to face the power transmission shaft and generating rotation angle information by detecting a rotation angle of the power transmission shaft;
a contact sensor installed on each of the link stopper and the auxiliary link stopper and generating a contact signal when the motor link is contacted; and
The forward rotation and reverse rotation maximum rotation angles of the power transmission shaft are stored, and the rotation angle information is analyzed to control the driving unit so that the power transmission shaft rotates between the forward rotation maximum rotation angle and the reverse rotation maximum rotation angle, and the contact signal is The driving force transmission device further comprising a control unit for stopping the operation of the driving unit when received. auxiliary footrest;
a rear assembly that rotates one end of the auxiliary footrest by coupling it to a lower part of the vehicle body; and
A motor bracket disposed under the vehicle body, a driving unit installed on the motor bracket to provide driving force, a power transmission shaft assembled to the motor bracket and connected to the driving unit to rotate by the driving force transmitted from the driving unit, A motor link, one end of which is connected to the power transmission shaft and rotates around the power transmission shaft, and the upper surface of the motor bracket located on the forward rotation stop point of the motor link so that the motor link does not rotate beyond the preset forward rotation stop point. The installed link stopper and the motor link located in the direction facing the link stopper when the motor link is in contact with the link stopper so that the motor link does not rotate in the forward or reverse direction even when an external force is applied are formed such that the angle between them is 180° or more. A rotary link having one end assembled with the other end of the motor link and the first hinge, and an interlocking link having the other end and one end of the rotary link assembled with the second hinge and rotating in the same direction as the motor link through the rotary link, and the interlocking link A rotating rod assembled in a vertical direction to the other end of the interlocking link to provide a rotational center axis, and one end coupled to the other end of the auxiliary footrest and the other end opposite to the one end coupled to the rotating rod to interlock with the rotating rod and rotates around the rotating rod Auxiliary scaffold system of a vehicle including a driving force transmission device including an arm block to do. The method of claim 6, between the arm block and the auxiliary scaffold
A hinge provided at the other end of the arm block in a vertical direction to provide a rotation axis, an upper plate coupled to the upper part of the hinge, a lower plate coupled to the lower part of the hinge and coupled to the auxiliary footrest, and between the upper plate and the lower plate A side plate provided, and a first adapter part including a rectangular parallelepiped balance bar installed on the lower plate and inserted into the auxiliary footrest and maintaining the upper surface of the auxiliary footrest and the upper surface of the upper plate horizontally so that the upper surface of the upper plate is maintained horizontally Auxiliary scaffolding system of a vehicle to be. The method of claim 7, wherein the arm block
A seating groove centered on the hinge is formed on the upper and lower surfaces of the other end inserted into the first adapter unit, and a packing ring is provided in the seating groove to block dust from entering the hinge. Auxiliary platform system.

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