JP6322104B2 - Automatic two-step device for getting on and off the vehicle - Google Patents

Description

  The present invention relates to an automatic two-step vehicle stepping device for getting on and off a vehicle that includes a motor load reduction mechanism and operates automatic expansion and automatic storage by a motor deceleration drive mechanism.

In Patent Document 1, a first step 10 and a second step 20 are connected by parallel links 31 and 32 via their side frames 12 and 22. The second step is attached to the slide rail 41. The fixed bracket 46 is provided with a pinion gear and a sector gear 50 that are driven by a drive motor 47, and a lever 51 integrated with the sector gear is connected to the step plate 21 of the second step step on the back surface, and the first motor is rotated by the rotation of the drive motor. The two-step step plate moves along the slide rail 41. As a result, the second step is advanced from the storage position to the outside of the vehicle body, and the first step is developed to obtain the second step. An automotive lifting device is disclosed which has the same unit height when folded as that of a conventional link type one-stage device, and can be mounted in a narrow space.

In Patent Document 2, a lower step 23 is supported on a fixed base bracket 20 via parallel links 21 and 22, and an upper step 25 is rotatably attached by a shaft 24. 25 are connected by an interlocking lever 26. When stored in the step unit 12, it is used as a step as it is. If necessary, when the lower step 23 is pulled out, the lower step 23 is positioned below the step portion 12, and the upper step 25 is positioned on the step portion 12 by the interlocking lever 26. Therefore, the lower step 23 and the upper step 25 Discloses a vehicle lifting device in which two steps are formed.

Patent Document 3 discloses a tread 1 that reciprocally moves between a storage position X on a vehicle step S already installed in a vehicle interior and an overhanging position Y at a front lower portion of the vehicle step S. 1 is a structure in which a pair of left and right arms 5 that suspends the support column 3 at the projecting position Y is pivotally connected between the support column 3 and the vehicle step S. The bent portion of the bell crank 7 is pivotally attached to an appropriate position 5, and links 8 and 9 are respectively provided between one end of the bell crank 7 and the column 3 and between the other end of the bell crank 7 and the vehicle step S. There is disclosed a retractable auxiliary step in the vehicle interior in which the treadle 1 is pivotally connected, the tread plate 1 is horizontally disposed at the retracted position X and the extended position Y, and is controlled so as to reciprocate on a fixed track.

Japanese Patent Application Laid-Open No. H10-228707 discloses different steps for a vehicle before and after the detection time point A when the detection switch detects that the front end of the flap is in contact with the side sill rubber or the front end of the flapper is in contact with the front end of the step body. Drive with voltage. The vehicle from which the effective voltage to the drive motor can be set to different values V2 and V3 in the respective phases 101 and 102 by dividing the detection time A to the stop time C at which the driving is stopped into a plurality of phases 101 and 102. A step control device is disclosed.

In Patent Document 5, the duty ratio of the PWM signal is obtained by an arithmetic expression of “X = α + βN” (S1), and when the calculated temporary DUTYX is equal to or greater than Dn (70%), the duty ratio D is expressed as Dn (70%) is set (S3), and a PWM signal with a duty ratio of 70% is output to the motor in the main routine. When the temporary DUTYX is less than Dmin (50%), the duty ratio D is set to Dmin (50%) (S4), and a PWM signal with a duty ratio of 50% is output to the motor. If the temporary DUTYX is greater than or equal to Dmin (50%) and less than Dn (70%), the computation result X is set to the duty ratio D (S5), and the PWM signal of the duty ratio of the computation result X is sent to the motor in the main routine. A vehicle boarding / alighting assistance device for outputting is disclosed.

Japanese Utility Model Publication No. 7-24654 Japanese Utility Model Publication No. 9-39666 JP 2010-188840 A JP 2010-137619 A JP 2011-213134 A

Since the first stage plate 10 of the manual setting mechanism and the second stage step 20 of the set mechanism by rotation of the drive motor are disclosed in Patent Document 1, the first stage step plate 10 is converted into a set mechanism by the drive motor. Therefore, full automation is expected.

In Patent Document 2, the base bracket 20 and the lower step 23 are connected by a gas spring 27 and are always urged to the storage position, so that the lower step 23 can be stored with a small force. Expected.

Patent Document 3 can freely get on and off even when stored in the passenger compartment, does not interfere with the tread plate support member such as a double-folded link when getting on and off, can safely get on and off from the side, and is fully automated in conjunction with the drive device. Although it is an easy retractable auxiliary step in the vehicle interior, it does not focus on reducing the power of the drive device.

In Patent Document 4, the retracting operation of the front end of the flap of the vehicle step starts driving the drive motor from the detection time point A, divides the stop time point C into a plurality of phases, and sets the effective voltage to the drive motor in each phase. It is possible to provide a vehicle step control device which can be set to different values, can freely set the effective voltage during driving, and can freely control the operating speed and driving force.

Patent Document 5 can arbitrarily set the rotational speed of the motor and the driving force of the motor, and control such as suppressing the driving force when the rotational speed is reduced due to overload without sacrificing the operating speed during normal driving. Is possible. Even when the load state is reduced, control is performed so that the rotational speed does not exceed a certain level, and when the rotational speed decreases due to sliding resistance, the driving force is kept constant in the constant rotational speed range. It is a vehicle entry / exit assistance device that exhibits the effect of being possible.

Even if a speed reduction mechanism is used for the drive motor mechanism, the automatic two-stage stepping device for getting on and off the vehicle in which the first step plate and the second step step toward the distal end with the fulcrum at the base end as the center, a large torque during storage Is required. For this reason, the present invention is provided with a motor load reduction mechanism that assists the drive torque during folding driving of the drive motor, for the purpose of reducing power consumption and smooth storage operation.

A first stage step plate pivotally supported by the vehicle and pivoting between a folding storage position in an upright state and a step position projecting sideways; a left side portion and a right side portion of the first stage step plate; The first left upper arm and the first right upper arm that pivot between a folding storage position in an upright state and a step position projecting sideways are pivotally supported on the vehicle and opposed to each other upward. The upper ends of the first left upper arm and the first right upper arm are pivotally supported, and the lower middle portions of the first left upper arm and the first right upper arm are intermediate the left outer surface near the tip of the first step plate. The left first connecting arm and the right first connecting arm that are pivotally supported by the middle part of the right outer surface and the base, and the base end portion at the lower end of the left first connecting arm and the lower end of the right first connecting arm, respectively. Each is pivotally supported from the base end to the left outer side and right outer side of the front middle part, respectively Are extended to the front from the front end of the first step step plate, the left end of the left extending side and the right end of the left second connecting arm pivotally supported at the front end of the right extending side and The lower end of each of the two connecting arms is composed of a second step plate that is pivotally supported, and at least one of the base end of the first left upper arm and the base end of the first right upper arm is a sector tooth portion. In the automatic two-step vehicle stepping device for getting on and off the vehicle, which is provided and meshes with an output pinion of the motor speed reduction drive mechanism, and operates two-step automatic overturning deployment and automatic standing storage according to the rotation direction of the motor speed reduction drive mechanism. Motor load reduction mechanism using a gas spring on a second-stage right quadrilateral link constituted by a right extension upper arm, a right side portion of the second-stage step plate, the first right-connection arm, and the second right-connection arm Department is deployed In that the vehicle passenger automatic two-stage step device.

The upper end portion of the gas spring is pivotally supported on a support shaft that pivotally supports the tip portion of the second right extension upper arm and the upper end portion of the second right connecting arm, and the lower end portion of the gas spring is connected to the first right connection. The lower end portion of the arm may be provided on a support shaft provided on a lower right support portion formed by bulging forward, and a motor load reduction mechanism portion using a gas spring may be provided. is there.

A first stage step plate pivotally supported by the vehicle and pivoting between a folding storage position in an upright state and a step position projecting sideways; a left side portion and a right side portion of the first stage step plate; The first left upper arm and the first right upper arm that pivot between a folding storage position in an upright state and a step position projecting sideways are pivotally supported on the vehicle and opposed to each other upward. The upper ends of the first left upper arm and the first right upper arm are pivotally supported, and the lower middle portions of the first left upper arm and the first right upper arm are intermediate portions of the left outer surface near the tip of the first step plate. And a left first connecting arm and a right first connecting arm that are pivotally supported in the middle portion of the right outer surface, respectively, and a base end portion at a lower end portion of the left first connecting arm and a lower end portion of the first right connecting arm. Each is pivotally supported on the left outer side and right outer side of the middle part on the front side from the base end part. The second left connecting arm and the second right connecting arm that are pivotally supported by the leading end of the left extending side portion and the leading end portion of the right extending side portion, the portion extending forward from the leading end of the first step step plate And a second stage step plate that is pivotally supported at each of the lower ends of the first stage step plate, a support shaft that pivotally supports the base end of the first stage step plate, the base end of the first left upper arm, or the first right One of the support shafts that pivotally support the base end of the upper arm is provided on at least the drive shaft and is linked to the motor speed reduction drive mechanism. In the vehicle two-step automatic two-step device for getting on and off, the second left extended upper arm, the left side of the second step step plate, the first left connecting arm, and the second left connecting arm. 2nd stage left quadrilateral link with gas spring Motor load reduction mechanism is of or as the vehicle for passenger entry and exit automatic two-stage step device made deployed.

The upper end of the gas spring is pivotally supported on a support shaft that pivotally supports the tip of the second left extension upper arm and the upper end of the second left connecting arm, and the lower end of the gas spring is closer to the lower end of the first left connecting arm. The motor load reduction mechanism portion by the gas spring may be provided by being pivotally provided on a support shaft provided on the left lower support portion formed by bulging the portion forward.

The motor reduction drive mechanism includes a first reduction gear and a second reduction gear which are arranged such that a motor bracket having a motor equipped with a motor gear can be moved up and down, and is engaged with the motor gear to reduce rotation. The two reduction gears may be provided with an output pinion.

The first reduction gear of the motor reduction drive mechanism is provided with a large-diameter gear portion and a small-diameter gear portion, the large-diameter gear portion faces the motor gear, and when the motor bracket is lowered, the motor gear meshes with the motor gear to transmit the rotation, When the motor bracket is raised, the motor gear is disengaged, the rotation of the motor speed reduction drive mechanism is released, the gear is always meshed with the small diameter gear of the first reduction gear, and the second reduction gear is composed of a large diameter gear portion and a small diameter gear portion. The large-diameter gear portion of the second reduction gear is always meshed with the small-diameter gear of the first reduction gear, transmits the rotation of the first reduction gear, and rotates the output pinion. Is also good.

  The vehicle two-step automatic two-step apparatus for boarding / exiting of the present invention can be provided robustly, has a small step on boarding / exiting on the road surface, is less swayed, and can be used safely by anyone including elderly people.

The vehicle two-step automatic two-step device for getting on and off of the present invention is compactly installed in a vehicle, can automatically deploy and automatically store the first-stage step plate and the second-step step plate, and the traffic needs of an aging society. It corresponds to.

The vehicle two-step automatic two-step apparatus for getting on and off of the present invention has a reduced front-and-rear width when stood and stored, and can be stored at a low level with a reduced height, and can be accommodated compactly.

The vehicle two-stage automatic two-step apparatus for getting on and off of the present invention can stably support the first step step plate and the second step step plate against the getting on / off load at the time of deployment.

Since the motor load reducing mechanism of the automatic two-step vehicle stepping device for use in the present invention uses a gas spring, a motor with a small torque can be used, and the overall weight of the device can be reduced.

As described above, the motor speed reduction drive mechanism in the vehicle two-step automatic two-step apparatus for getting on / off of the present invention uses the gas spring, so that the reduction ratio can be reduced, the structure is simple, robust, and high safety is achieved. It is ensured and the cost is reduced, which brings convenience and economic effect.

It is a perspective view which shows the fully expanded state of the Example of the automatic two step step apparatus for vehicle getting on / off of this invention. Similarly, it is a right side view showing the fully developed state. Similarly, it is a left side view showing the fully developed state. Similarly, it is a left side view in a fully developed state showing the relationship between a motor speed reduction drive mechanism that transmits the rotation of the motor to the drive arm while reducing the rotation of the transmission and the vehicle two-step automatic two-step device. It is an internal side view which shows the Example of the motor deceleration drive mechanism part which cancel | releases meshing | engagement of the pinion of a motor shaft, and a 1st reduction gear, and enables manual raising / lowering of the vehicle two steps automatic getting-on / off device. It is a side view which shows the motor reduction drive mechanism part which transmits rotation from the pinion of a motor shaft to the gear part of the raising / lowering drive arm base from a 1st reduction gear and a 2nd reduction gear. It is a partial right view which shows the arrangement | positioning condition of both limit switches which detect the time of the 1st stage step board of the vehicle two steps boarding / alighting apparatus of this invention and the 2nd stage step at the time of standing stowage, and the time of lying down deployment. It is a right view which shows the expansion | extension state of the gas spring of the motor load reduction mechanism part at the time of standing storage of the 1st step step board and 2nd step of the vehicle two steps apparatus for boarding / alighting of this invention. Similarly, the first step plate and the second step of the vehicle two-step automatic two-step apparatus for boarding / alighting according to the present invention are right side views showing an extended state of the gas spring of the motor load reduction mechanism when intermediate deployment is performed. FIG. 5 is an explanatory right side view for explaining the gas spring reducing force of the motor load reducing mechanism in the fully developed state of the first step plate and the second step of the vehicle two-stage automatic stepping device for getting on and off of the present invention. It is a fragmentary perspective view of the state which removed the cover part of the gear box of the automatic two-step vehicle step device for boarding / alighting of this invention.

A first stage step plate pivotally supported by the vehicle and pivoting between a folding storage position in an upright state and a step position projecting sideways; a left side portion and a right side portion of the first stage step plate; The first left upper is pivotally supported between the folding storage position in the upright state and the step position projecting sideways, with the base end portions pivotally supported on the side edges of the floor surface of the vehicle. Upper ends of the arms, the first right upper arm, and the upper ends of the first left upper arm and the first right upper arm are pivotally supported, and the lower intermediate portions of the upper ends of the first step plate The left first connecting arm and the right first connecting arm that are pivotally supported by the middle portion of the left outer surface near the tip and the middle portion of the right outer surface, respectively, and the base end portion is the lower end portion and the right of the left first connecting arm. The first connecting arm is pivotally supported at the lower end of the first connecting arm, and the left outer surface and the right outer side of the front intermediate portion from the base end. In addition, the second left connecting arm pivotally supported at the leading end of the left extending side portion and the leading end portion of the right extending side portion, each upper end portion extending forward from the leading end of the first step step plate. And a second step plate on which the lower end of the right second connecting arm is pivotally supported, and at least a base end of the first left upper arm and a base end of the first right upper arm An automatic two-step step for getting on and off the vehicle, one of which is provided on the fan-shaped toothed portion, meshes with the output pinion of the motor speed reduction drive mechanism, and activates the two-step automatic overturning deployment and the automatic upright storage according to the rotation direction of the motor speed reduction drive mechanism. In the apparatus, the second right extended upper arm, the right side portion of the second step step plate, the first right connecting arm, and the second right connecting link constituted by the second right connecting arm are gas-filled. Motor load reduction machine by spring Part is deployed vehicle passenger automatic two-stage step device.

Hereinafter, an automatic two-step vehicle stepping apparatus for getting on and off a vehicle having a motor load reduction mechanism unit according to the present invention includes an automatic two-step step device for getting on and off a vehicle 1 having a motor load reduction mechanism unit according to an embodiment shown in the drawings. A description will be given by using a certain two-step step portion 2 for getting on and off a vehicle, a motor speed reduction drive mechanism portion 4 by a motor 3, and a motor load reduction mechanism portion 5.

First, the base frame 6 of the two-step step portion 2 for getting on and off the vehicle is installed, for example, on the installation surface 7a of the recessed installation portion 7 in the inner room of the side door of a one-box type automobile.

The base frame 6 has a left end bearing support plate 8a and a right end bearing support plate 8b erected on the upper surfaces of both ends of the bottom plate 6a. The base frame 6 is provided on the left end bearing support plate 8a and the right end bearing support plate 8b. A left bearing hole (not shown) and a right bearing hole (not shown) are opened at the same height from the upper surfaces of both ends of the bottom plate 6a and facing the same left and right axis. Not) and right bearing hole (fig.
Not shown. ), A first step step plate left base end support shaft 10a and a first step step plate right base end support shaft 10b protruding from both outer side surfaces of the base end portion of the first step step plate 9 are fitted and inserted. The first stage step plate 9 is supported so as to be raised and lowered.

The left bearing hole and the right bearing hole are provided in place of the first step plate left base end support shaft 10a and the first step step plate right base end support shaft 10b, and the first step step plate left base end support shaft 10a. The first step plate right base end support shaft 10b may be provided in the left bearing hole and the right bearing hole, and the corresponding support shaft and bearing hole may be fitted.

Leg portions that protrude downward toward the distal end side from the axis of the first step step plate left base end support shaft 10a and the first step step plate right base end support shaft 10b near the right side surface of the lower surface of the first step step plate 9 11, and when the first step plate 9 lies down about the axis of the first step plate left base end support shaft 10 a and the first step step plate right base end support shaft 10 b, the installation surface 7 a It is provided so as to contact and be supported by the installed buffer seat 12.

On the left side of the left end bearing support plate 8a, a gear box 14 provided with a bearing wall plate 13 on the right side is provided with a space F in which the first left upper arm 15a is provided, and the base frame 6 From the upper surfaces of both ends of the bottom plate 6a, the left bearing hole (not shown) and the right bearing hole (not shown) are positioned higher than the left bearing hole (not shown) and facing the same left and right axis. (Not shown) is opened in the left end bearing support plate 8a, and a higher right bearing hole (not shown) is opened in the right end bearing support plate 8b.

A first left upper arm base end support shaft 16a provided integrally with a base end portion of the first left upper arm 15a is fitted into the high-order left bearing hole (not shown) so that the first left upper arm 15a It is deployed so that it can rotate freely. In the high-order right bearing hole (not shown), a first right upper arm base end support shaft 16b provided integrally with a base end portion of the first right upper arm 15b is fitted and the first right upper arm 15b is inserted. It is deployed so that it can rotate freely.

The high order left bearing hole (not shown) and the high order right bearing hole (not shown) are provided in place of the first left upper arm base end support shaft 16a and the first right upper arm base end support shaft 16b. In this case, the base end portions of the first left upper arm 15a and the first right upper arm 15b are provided with bearing holes, respectively, and the first left upper arm base end support shaft 16a and the first right upper arm are provided. The base end support shaft 16b may be rotatably supported.

  The upper end of the first left connecting arm 17a is pivotally connected to the inner surface of the front end of the first left upper arm 15a by a first left upper support shaft 18a, and the middle portion closer to the front end is the first. The left intermediate support shaft 19a is rotatably connected to the left outer surface of the intermediate portion near the distal end of the first step step plate 9, and the lower end thereof is connected to the left outer surface of the base end portion of the second step step plate 20. The second left base end support shaft 21a is rotatably connected.

The upper end of the first right connecting arm 17b is pivotally connected to the inner surface of the distal end portion of the first right upper arm 15b by the first upper right end support shaft 18b, and the middle portion closer to the distal end is the first portion. The right intermediate support shaft 19b is pivotally connected to the right outer surface of the intermediate portion near the distal end of the first step step plate 9, and the lower end thereof is connected to the right outer surface of the base end portion of the second step step plate 20. The second right base end support shaft 21b is rotatably connected.

  The length between the first step step plate left base end support shaft 10a at the base end portion of the first step step plate 9 and the first left intermediate support shaft 19a at the intermediate portion near the front end portion, and the first left upper arm 15a. The length between the first left upper arm base end support shaft 16a at the base end portion and the first left upper end support shaft 18a at the front end portion is the same. Also, the upper and lower intervals between the first step plate left base end support shaft 10a at the base end of the first step step plate 9 and the first left upper arm base end support shaft 16a at the base end of the first left upper arm 15a. Is the same as the length between the upper and lower sides of the first left intermediate support shaft 19a at the intermediate portion near the front end of the first step plate 9 and the first left upper support shaft 18a at the front end of the first left upper arm 15a. Therefore, the first left connecting arm 17a, the first left upper arm 15a, the first step step plate 9, and the left end bearing support plate 8a constitute a first step left quadrilateral link 22a.

The length between the first step step plate right base end support shaft 10b at the base end portion of the first step step plate 9 and the first right intermediate support shaft 19b at the intermediate portion near the front end portion, and the first right upper arm 15b. The length between the first right upper arm base end support shaft 16b at the base end portion and the first right upper end support shaft 18b at the front end portion is the same. In addition, the vertical distance between the first step step plate right base end support shaft 10b at the base end portion of the first step step plate 9 and the first right upper arm base end support shaft 16b at the base end portion of the first right upper arm 15b. Is equal to the length between the upper and lower sides of the first right intermediate support shaft 19b at the intermediate portion near the tip of the first step step plate 9 and the first right upper support shaft 18b at the tip of the first right upper arm 15b. Therefore, the first right connecting arm 17b, the first right upper arm 15b, the first step step plate 9, and the right end bearing support plate 8b constitute a first step right quadrilateral link 22b.

Of course, in the first-stage left quadrilateral link 22a and the first-stage right quadrilateral link 22, the axes of the support shafts corresponding to the left and right are provided in the same way.

The left outer plate 9a of the first step plate 9 is extended by a required length forward from the front edge of the first step plate 9, and is provided with a second left extension upper arm 23a. Further, an upper end portion of the second left connecting arm 25a is pivotally supported by a second left upper end supporting shaft 24a arranged forward from the first left intermediate supporting shaft 19a with a required interval, and the second left connecting arm 25a has a lower end portion having the same interval as the first left intermediate support shaft 19a and the second left base support shaft 21a, and an interval between the first left intermediate support shaft 19a and the second left upper end support shaft 24a. An intermediate portion of the second step step plate 20 is provided by a second left front support shaft 26a arranged to protrude from the left outer surface of the intermediate portion of the second step step plate 20 ahead of the second left base end support shaft 21a with the same interval. Are connected to the left outer surface.

The right outer plate 9b of the first step step plate 9 is extended forward from the front edge of the first step step plate 9 by the same length as the second left extension upper arm 23a to provide a second right extension upper arm 23b. The upper right end of the second right connecting arm 25b is connected to the right outer surface of the front end portion of the second right connecting arm 25b by the second upper right end supporting shaft 24b with the same interval as the interval between the first left intermediate supporting shaft 19a and the second left upper end supporting shaft 24a. The lower end of the second right connecting arm 25b has the same distance as the distance between the first left intermediate support shaft 19a and the second left proximal support shaft 21a, and the first left intermediate support shaft 25a. The second step step plate 20 is provided by a second right front support shaft 26b that is arranged to protrude from the right outer surface of the intermediate portion of the second step step plate 20 at the same interval as the interval between the shaft 19a and the second left upper end support shaft 24a. The right outer side surface of the middle part of is connected.

The second left extension upper arm 23a between the first left intermediate support shaft 19a and the second left upper end support shaft 24a, and the second stage between the second left base support shaft 21a and the second left front support shaft 26a. The first left connecting arm 17a between the left outer portion of the step plate 20 and the second left base end support shaft 21a of the first left intermediate support shaft 19a, the second left upper end support shaft 24a, and the second left front support shaft A second stage left quadrilateral link 27a is constituted by the second left connecting arm 25a between 26a.

Second right extension upper arm 23b between the first right intermediate support shaft 19b and the second right upper end support shaft 24b, and a second stage between the second right base support shaft 21b and the second right front support shaft 26b. The right side of the step plate 20, the first right connecting arm 17b between the first right intermediate support shaft 19b and the second right base support shaft 21b, the second right upper end support shaft 24b, and the second right front support shaft 26b. A second stage right quadrilateral link 27b is formed by the second right connecting arm 25b between the two.

Of course, in the second-stage left quadrilateral link 27a and the second-stage right quadrilateral link 27b, the axes of the support shafts corresponding to the left and right are provided in the same way.

As described above, the two-stage step 2 for getting on and off the vehicle according to the embodiment of the present invention includes the first-stage step plate 9 and the second-stage step plate 20 as the first-stage left quadrilateral link 22a and the first-stage right-hand step. The quadrilateral link 22b, the second-stage left quadrilateral link 27a, and the second-stage right quadrilateral link 27b are connected to each other.

As an embodiment, the base end portion of the first left upper arm 15a is formed in a fan-shaped gear portion 28 centering on the first left upper arm base end support shaft 16a, and the fan-shaped gear portion 28 is a motor. In the configuration of the embodiment in which the output pinion 29 arranged in the gear box 14 of the deceleration drive mechanism unit 4 is engaged, the first left upper arm base 15a that supports the base end portion according to the rotation of the output pinion 29 is used. The first right upper arm 15b rotates around the end support shaft 16a around the first right upper arm base end support shaft 16b that supports the base end portion. Then, for example, from the state where the first step step plate 9 and the second step step plate 20 are erected, as shown in FIGS. 1 to 3, the first step step plate 9 and the second step step plate 20 are moved to the vehicle side. The two-step step portion 2 for getting on and off the vehicle is provided by projecting in the direction. Then, the first left upper arm 15a and the first right upper arm 15b are raised by the reverse rotation of the output pinion 29, and the first step plate 9 and the second step plate 20 are stored in an upright state.

The gear box 14 of the motor speed reduction drive mechanism 4 is provided with a motor bracket 31 on which the motor 3 including the motor gear 30 is mounted so that it can be moved up and down. 32 and a second reduction gear 33 are provided.

The first reduction gear 32 of the motor reduction drive mechanism unit 4 is provided with a large-diameter gear portion 32a and a small-diameter gear portion 32b. The large-diameter gear portion 32a faces the motor gear 30, and when the motor bracket 31 is lowered. The rotation is transmitted by meshing with the motor gear 30. When the motor bracket 31 is raised, it is not engaged with the motor gear 30 and the rotation of the motor deceleration drive mechanism 4 is released.

The second reduction gear 33 of the motor reduction drive mechanism 4 is provided with a large diameter gear portion 33 a and an output pinion 29 which is a small diameter gear portion. The large diameter gear portion 33 a is a small diameter gear of the first reduction gear 32. It always meshes with the portion 32b, transmits the rotation of the first reduction gear 32, rotates the output pinion 29 which is a small-diameter gear portion, and transmits the rotation to the fan-shaped gear portion 28 of the first left upper arm 15a.

A knob 34 integral with a screw shaft 35 is rotatably provided in the gear box 14 of the motor speed reduction drive mechanism 4, and the screw shaft 35 is moved up and down by the rotation of the knob 34 and is supported on the screw shaft 35. Guide holes 36 a and 36 b provided in the motor bracket 31 of the bracket 31 move up and down along guide shafts 37 a and 37 b fixed to the gear box 14.

The gear box 14 is detachably provided with a cover 14a that covers the knob 34, and when a failure occurs, the cover 14a is removed and manually rotated as described above, as shown in FIG.

When the motor bracket 31 is raised, the engagement between the motor gear 30 and the large-diameter gear portion 32a of the first reduction gear 32 is eliminated, and the first left upper arm 15a of the two-step step portion 2 for getting on and off the vehicle is set free. The step plate 9 and the second step step plate 20 can be manually operated and stored. After storing, if the motor gear 30 and the large-diameter gear portion 32a of the first reduction gear 32 are meshed by rotating the knob 34, the motor gear 30 cannot be rotated, that is, the first left upper arm 15a and the first gear Since the motor deceleration drive mechanism 4 cannot be rotated manually by operating the 1 right upper arm 15b, the first left upper arm 15a and the first right upper arm 15b can be locked in the standing state.

On the outer periphery of the base end portion of the first right upper arm 15b of the two-step step portion 2 for getting on and off the vehicle, a standing manipulator 38a and a prone manipulator 38b are arranged to project approximately 180 degrees, and the first right upper arm The standing detection limit switch 39a and the lying down detection limit switch 39b are arranged on the outer side surface of the right end bearing support plate 8b in correspondence with the standing storage turning position 15b and the lying down deployment turning position.

Although not shown, the first left upper arm base end support shaft 16a supporting the first left upper arm 15a or the first right upper arm base end support shaft 16b supporting the first right upper arm 15b is used as the first left upper arm. The motor 3 is provided integrally with the arm 15a or the first right upper arm 15b, and the first left upper arm base end support shaft 16a or the first right upper arm base end support shaft 16b is connected to the second reduction gear 33. The rotation of the vehicle is transmitted, and the first left upper arm 15a is actuated so that the entire two-step step portion 2 for getting on and off the vehicle can be stowed or deployed in an overlying manner.

As an embodiment in which the first left upper arm base end support shaft 16a or the first right upper arm base end support shaft 16b is connected to the second reduction gear 33, the first left upper arm base end support shaft 16a is not shown. Alternatively, a gear may be attached to the first right upper arm proximal end support shaft 16 b and the gear may be engaged with the output pinion 29 of the second reduction gear 33.

Further, at least one of the first step step plate left base end support shaft 10a or the first step step plate right base end support shaft 10b that pivotally supports the base end portion of the first step step plate 9 is connected to the first step step plate 9. Rotating from the motor 3 by connecting to the second reduction gear 33 and the first step step plate left base end support shaft 10a or the first step step plate right base end support shaft 10b provided integrally. Then, the first step 9 may be actuated so that the entire two-step step portion 2 for getting on and off the vehicle can be stowed or deployed in a lying manner.

Although not shown, the first step step plate left base end shaft 10a or the first step step plate right base end support shaft 10b is connected to the second reduction gear 33, although not shown. A gear may be attached to the support shaft 10a or the first-stage step plate right base end support shaft 10b, and the gear may be engaged with the output pinion 29 of the second reduction gear 33.

When the first right upper arm 15b is stood up, the standing operator 38a comes into contact with the standing detection contact plate 40a to input the standing detection limit switch 39a, and the power supply circuit to the motor 3 is opened and stopped. The two-stage step unit 2 maintains the stored state. Further, when the first right upper arm 15b is deployed, the overturning operator 38b comes into contact with the overturn detection contact plate 40b and inputs the overturn detection limit switch 39b to open the power supply circuit to the motor 3. The two-step step part 2 for getting on and off the vehicle that has stopped and maintained maintains the two-step state with respect to the road surface 41.

In the motor load reduction mechanism 5, gas springs 42 are arranged above and below the right outer surface of the second-stage right parallelogram link 27 b.

In the embodiment, the lower end portion of the first right connecting arm 17b that is pivotally connected to the upper right end support shaft 24b and the upper end portion pivotably from the first right intermediate support shaft 19b bulges forward. As a result, a right lower step support portion 17b1 is formed, and a right lower end side intermediate support shaft 43 that protrudes on the right side surface is fixed to the right lower step portion 17b1.

A second upper right end support shaft 24b, which is disposed at the tip of the second right extension upper arm 23b and pivotally supports the upper end portion of the second right connection arm 25b, protrudes from the right outer surface of the second right connection arm 25b. A protruding shaft portion 24b1 is provided, and the upper end portion and the lower end portion of the gas spring 42 are connected to the protruding shaft portion 24b1 and the right lower end side intermediate support shaft 43.

As shown in FIG. 10, even if the speed reducer is used, the first step step plate 9 and the second step step plate 20 protrude toward the distal end centering on the respective base end support shafts 10a, 10b, 16a, 16b. Therefore, a large torque is required for the storage. For this reason, the present invention uses the gas spring 42 as the motor load reduction mechanism 5.

The gas spring 42 obtains a spring force (reaction force) by compression, and the spring force (reaction force) is substantially constant over a long stroke.

The gas spring 42 is disposed between the first right connecting arm 17b and the second right connecting arm 25b of the second stage right quadrilateral link 27b. The gas spring 42 generates a force F in the extending direction.

  The vehicle two-step automatic two-step apparatus for boarding / exiting of the present invention can be provided robustly, has a small step on boarding / exiting on the road surface, is less swayed, and can be used safely by anyone including elderly people.

The vehicle two-step automatic two-step device for getting on and off of the present invention is compactly installed in a vehicle, can automatically deploy and automatically store the first-stage step plate and the second-step step plate, and the traffic needs of an aging society. It corresponds to.

The vehicle two-step automatic two-step apparatus for getting on and off of the present invention has a reduced front-and-rear width when stood and stored, and can be stored at a low level with a reduced height, and can be accommodated compactly.

The vehicle two-stage automatic two-step apparatus for getting on and off of the present invention can stably support the first step step plate and the second step step plate against the getting on / off load at the time of deployment.

Since the motor load reducing mechanism of the automatic two-step vehicle stepping device according to the present invention uses a gas spring, the driving force of the motor can be steadily assisted and a motor with a small torque can be used, and the overall weight of the device can be reduced. Can be achieved.

Since the motor speed reduction drive mechanism in the vehicle two-step automatic two-step device of the present invention uses the gas spring as described above, the number of speed reduction stages can be made as few as possible, and the structure is simple and robust. This ensures high safety, reduces costs, and brings convenience and economic benefits.

DESCRIPTION OF SYMBOLS 1 Automatic two step apparatus for vehicle getting on / off 2 Two step step part for vehicle getting on / off 3 Motor 4 Motor deceleration drive mechanism part 5 Motor load reduction mechanism part 6 Base frame 6a Bottom plate 7 Recessed installation part 7a Installation surface 8a Left end bearing support plate 8b Right end bearing support plate 9 First step step plate 9a Left outer plate 9b Right outer plate 10a First step step plate left base end support shaft 10b First step step plate right base end support shaft 11 Leg 12 Buffer seat 13 Bearing wall Plate 14 Gearbox 14a Lid 15a First left upper arm 15b First right upper arm 16a First left upper arm base end support shaft 16b First right upper arm base end support shaft 17a First left communication arm 17b First right connection Arm 17b1 Right lower support shaft 18a First left upper support shaft 18b First upper right support shaft 19a First left intermediate support shaft 19b First right intermediate support shaft 20 Second step step plate 21a Second left base end support shaft 21b Second right base end support shaft 22a First stage left quadrilateral link 22b First stage right quadrilateral link 23a Second left extension upper arm 23b Second right extension upper arm 24a Second left upper end Support shaft 24b Second upper right end support shaft 24b1 Projection shaft portion 25a Second left connection arm 25b Second right connection arm 26a Second left front support shaft 26b Second right front support shaft 27a Second stage left quadrilateral link 27b Second Step-right quadrilateral link 28 Fan-shaped gear section 29 Output pinion 30 Motor gear 31 Motor bracket 32 First reduction gear 32a Large diameter gear section 32b Small diameter gear section 33 Second reduction gear 33a Large diameter gear section 34 Knob 35 Screw shaft 36a Guide Hole 36b Guide hole 37a Guide shaft 37b Guide shaft 38a Standing control 38b Prone control 39a Standing detection limit switch 39b Protrusion detection limit Switch 40a Standing detection contact plate 40b Overturn detection contact plate 41 Road surface 42 Gas spring 43 Lower right side intermediate support shaft

Claims (6)

A first stage step plate pivotally supported by the vehicle and pivoting between a folding storage position in an upright state and a step position projecting sideways; a left side portion and a right side portion of the first stage step plate; The first left upper arm and the first right upper arm that pivot between a folding storage position in an upright state and a step position projecting sideways are pivotally supported on the vehicle and opposed to each other upward. The upper ends of the first left upper arm and the first right upper arm are pivotally supported, and the lower middle portions of the first left upper arm and the first right upper arm are intermediate the left outer surface near the tip of the first step plate. The left first connecting arm and the right first connecting arm that are pivotally supported by the middle part of the right outer surface and the base, and the base end portion at the lower end of the left first connecting arm and the lower end of the right first connecting arm, respectively. Each is pivotally supported from the base end to the left outer side and right outer side of the front middle part, respectively Are extended to the front from the front end of the first step step plate, the left end of the left extending side and the right end of the left second connecting arm pivotally supported at the front end of the right extending side and The lower end of each of the two connecting arms is composed of a second step plate that is pivotally supported, and at least one of the base end of the first left upper arm and the base end of the first right upper arm is a sector tooth portion. In the automatic two-step vehicle stepping device for getting on and off the vehicle, which is provided and meshes with an output pinion of the motor speed reduction drive mechanism, and operates two-step automatic overturning deployment and automatic standing storage according to the rotation direction of the motor speed reduction drive mechanism. Motor load reduction mechanism using a gas spring on a second-stage right quadrilateral link constituted by a right extension upper arm, a right side portion of the second-stage step plate, the first right-connection arm, and the second right-connection arm Department is deployed That the vehicle passenger automatic two-stage step device. The upper end portion of the gas spring is pivotally supported on a support shaft that pivotally supports the tip portion of the second right extension upper arm and the upper end portion of the second right connecting arm, and the lower end portion of the gas spring is connected to the first right connection. 2. A vehicle loading / unloading vehicle according to claim 1, wherein a motor load reducing mechanism portion by a gas spring is provided by being supported by a support shaft provided on a lower right support portion formed by bulging the lower end portion of the arm forward. Automatic two-step device. A first stage step plate pivotally supported by the vehicle and pivoting between a folding storage position in an upright state and a step position projecting sideways; a left side portion and a right side portion of the first stage step plate; The first left upper arm and the first right upper arm that pivot between a folding storage position in an upright state and a step position projecting sideways are pivotally supported on the vehicle and opposed to each other upward. The upper ends of the first left upper arm and the first right upper arm are pivotally supported, and the lower middle portions of the first left upper arm and the first right upper arm are intermediate portions of the left outer surface near the tip of the first step plate. And a left first connecting arm and a right first connecting arm that are pivotally supported in the middle portion of the right outer surface, respectively, and a base end portion at a lower end portion of the left first connecting arm and a lower end portion of the first right connecting arm. Each is pivotally supported on the left outer side and right outer side of the middle part on the front side from the base end part. The second left connecting arm and the second right connecting arm that are pivotally supported by the leading end of the left extending side portion and the leading end portion of the right extending side portion, the portion extending forward from the leading end of the first step step plate And a second stage step plate that is pivotally supported at each of the lower ends of the first stage step plate, a support shaft that pivotally supports the base end of the first stage step plate, the base end of the first left upper arm, or the first right One of the support shafts that pivotally support the base end of the upper arm is provided on at least the drive shaft and is linked to the motor speed reduction drive mechanism. In the vehicle two-step automatic two-step device for getting on and off, the second left extended upper arm, the left side of the second step step plate, the first left connecting arm, and the second left connecting arm. 2nd stage left quadrilateral link with gas spring Vehicle passenger automatic two-stage step device motor load reduction mechanism unit is deployed. The upper end of the gas spring is pivotally supported on a support shaft that pivotally supports the tip of the second left extension upper arm and the upper end of the second left connecting arm, and the lower end of the gas spring is closer to the lower end of the first left connecting arm. 4. The automatic two-stage for getting on and off the vehicle according to claim 3, wherein a motor load reduction mechanism portion by a gas spring is provided by being supported by a support shaft provided on a left lower support portion formed by bulging the portion forward. Step device. The motor reduction drive mechanism includes a first reduction gear and a second reduction gear which are arranged such that a motor bracket having a motor equipped with a motor gear can be moved up and down, and is engaged with the motor gear to reduce rotation. The automatic two-step stepping device for getting on and off the vehicle according to any one of claims 1 to 4, wherein the two reduction gears are provided with an output pinion. The first reduction gear of the motor reduction drive mechanism is provided with a large-diameter gear portion and a small-diameter gear portion, the large-diameter gear portion faces the motor gear, and when the motor bracket is lowered, the motor gear meshes with the motor gear to transmit the rotation, When the motor bracket is raised, the motor gear is disengaged, the rotation of the motor speed reduction drive mechanism is released, the gear is always meshed with the small diameter gear of the first reduction gear, and the second reduction gear is composed of a large diameter gear portion and a small diameter gear portion. The large-diameter gear portion of the second reduction gear is provided with a certain output pinion, and is always meshed with the small-diameter gear of the first reduction gear, transmits the rotation of the first reduction gear, and rotates the output pinion. 5. Automatic two-step step device for getting on and off the vehicle.

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