JP6106013B2 - Vehicle entry / exit assisting step device - Google Patents

Description

  The present invention relates to a vehicle step-in / out auxiliary two-step device capable of performing automatic deployment and automatic storage by a deceleration drive mechanism.

 Patent Document 1 discloses a first step plate 2 that can rotate around a base end 2b, a second step plate 3 that can rotate around a base end 3b, a side surface 3a of a second step plate, The connecting arm 5 hinged to the side surface portion 2a of the first stepping plate, the connecting arm 6 hinged to the side surface portion 3a of the second stepping plate, the connecting arm 5 and the connecting arm 6 hinged to the side surface portion 4a, respectively. There is disclosed a foldable staircase for a vehicle, which is a three-step or more foldable staircase having at least a third stepboard 4 that is connected and operates in accordance with the rotation of the first stepboard and the second stepboard. .

 Patent Document 2 is an auxiliary step 2 that is movably provided between a storage position X in the lower part of the vehicle step 1 and an overhanging position Y in the lower part of the vehicle step 1. The upper and lower steps 3 and 4 supported by stacking are provided so as to be movable in parallel with each other in steps so as to be deformed into a two-step upper and lower steps. When used by persons with disabilities, the auxiliary step 2 is provided as upper and lower steps. There is disclosed a retractable auxiliary step for a vehicle that can be transformed into three or four upper and lower steps.

 In Patent Document 3, the base ends of a pair of left and right arms 3 and 3a having the same radius of rotation are pivotally arranged below the vehicle step S, and the distal ends of the arms 3 and 3a are placed on the left and right of the bottom portion 1a of the auxiliary step 1. By pivotally connecting and connecting the distal ends of the arms 3 and 3a extending from the pivots 4 and 4a by connecting rods 5 and connecting one of the arms 3 and 3a to the drive source 7 , The driving force of the driving source 7 is transmitted to both the arms 3 and 3a, and the auxiliary step 1 is operated smoothly and while the auxiliary step 1 is stopped or the extended state of the auxiliary step 1 when the driving source 7 is stopped. A retractable auxiliary step for a vehicle is disclosed in which 3a firmly supports and stabilizes the auxiliary step 1.

 The invention disclosed in Patent Document 1 has three or more steps, so that the height of each step can be lowered, and the final step can be extended to the ground, so that the infant, elderly person, body Even people with disabilities can get on and off very easily. However, if the number of steps is increased, the total weight of the folding stairs for the vehicle also increases, and there is a drawback that manual lifting requires labor.

  The invention disclosed in Patent Document 2 is an auxiliary step that is movably provided between a storage position X at the lower part of the vehicle step 1 and an overhanging position Y at the front part of the lower part of the vehicle step 1. Since it was arranged so that it could be deformed into a two-step staircase and a case where it was deformed into a single step by overlapping two upper and lower steps, it became a kind specification suitable for elevators, but on the other hand, the structure became complicated and the cost It was up.

 The invention disclosed in Patent Document 3 proposes a retractable auxiliary step for a vehicle that has good operation and improved stability in an overhang state, but because it is a single stage, in a vehicle with a high floor surface, The level difference with the road surface is large and the ease of getting on and off is not solved.

JP 2003-191793 A Japanese Patent Laid-Open No. 2004-210011 JP 2004-359067 A

 A conventional vehicle entry / exit assist step is mainly a motor-operated step. However, in the case of the step attached to the vehicle step portion, since the step is large, a step having a smaller step is required. The present invention proposes a vehicular entry / exit auxiliary step device that has two steps of auxiliary steps and uses a motor and a reduction gear to perform development and storage by power.

  A first stage step plate pivoted between a folding storage position in an upright state and a step position projecting sideways, with a proximal end pivotally supported by the vehicle, and above the left and right side portions of the first stage step plate, The base end is pivotally supported by the vehicle, and the left and right upper arms rotate between the folding storage position in the upright state and the step position protruding sideways, and the upper end is at the lower end of the left and right upper arms. Left and right first connecting arms that are pivotally supported at intermediate portions of the left and right outer surfaces near the tip of the first step plate, and a base end is pivotally supported at the lower ends of the left and right first connecting arms, The lower end portion of the left and right second connecting arm pivotally supported by the front end portion of the left and right extending side portion, the upper end portion extending forward from the front end of the first step plate on the left and right outer surfaces of the front intermediate portion Each of which has a second stage step plate that is pivotally supported. -For vehicles in which at least one of the base ends of the arm is provided on the fan-shaped teeth and meshes with the output pinion of the deceleration drive mechanism, and the two-step automatic overturning deployment and automatic upright storage are activated by the rotation direction of the deceleration drive mechanism It is in the boarding / alighting auxiliary two-step device.

 A first stage step plate pivoted between a folding storage position in an upright state and a step position projecting sideways, with a proximal end pivotally supported by the vehicle, and above the left and right side portions of the first stage step plate, The base end is pivotally supported by the vehicle, and the left and right upper arms rotate between the folding storage position in the upright state and the step position protruding sideways, and the upper end is at the lower end of the left and right upper arms. Left and right first connecting arms that are pivotally supported at intermediate portions of the left and right outer surfaces near the tip of the first step plate, and a base end is pivotally supported at the lower ends of the left and right first connecting arms, The lower end portion of the left and right second connecting arm pivotally supported by the front end portion of the left and right extending side portion, the upper end portion extending forward from the front end of the first step plate on the left and right outer surfaces of the front intermediate portion Each of which is supported by a second stage step plate, One of the support shaft that pivotally supports the base end portion of the plate plate or the support shaft that pivotally supports the base end portion of the left and right upper arms is provided on at least the drive shaft, and is linked to the speed reduction drive mechanism. It is good also as a boarding / alighting assistance two-step apparatus for a vehicle that operates two-step automatic overturning deployment and automatic standing storage depending on the direction.

 The vehicle entry / exit assist two-step device is provided with a motor bracket equipped with a motor having a motor gear so that the motor bracket can be moved up and down, a first reduction gear that meshes with the motor gear and decelerates and transmits rotation, a relay gear, The gear box may include a second reduction gear, a third reduction gear, and a gear box provided with a reduction drive mechanism having an output pinion on the third reduction gear.

  The first reduction gear of the reduction drive mechanism of the vehicle entry / exit assist two-step step device is provided with a large-diameter gear portion and a small-diameter gear portion, the large-diameter gear portion faces the motor gear, and the motor bracket is moved down when the motor bracket is lowered. Rotation is transmitted by meshing with the gear, and when the motor bracket is raised, the meshing with the motor gear is lost, the rotation of the reduction drive mechanism is released, the relay gear is always meshed with the small diameter gear of the first reduction gear, and the second The reduction gear is provided with 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 relay gear, and the third reduction gear is an output that is a large-diameter gear portion and a small-diameter gear portion. The large-diameter gear portion of the third reduction gear is always meshed with the small-diameter gear portion of the second reduction gear, transmits the rotation of the second reduction gear, and rotates the output pinion. Good .

 Since the two-step step is a step that protrudes far from the drive shaft, the torque required to store the two-step step is very large compared to the torque applied to the base shaft of the one-step step. The vehicle entry / exit assistance two-step device of the invention can be operated compactly and smoothly with a smaller motor through a speed reduction mechanism.

 In the case where at least one of them is connected to a motor such as a motor and the left and right upper arms are arranged at the uppermost stage, the first step step plate, the second step step plate, the first left and right connecting arms, The gravitational action of the left and right connecting arms acts on the left and right upper arms to smoothly operate the overturning and standing up.

 In the vehicle two-stage auxiliary stepping device for a vehicle according to the present invention, in a configuration in which a fan-shaped gear portion is provided at at least one base end portion of the left and right upper arms, and an output pinion is meshed with the gear portion, the left and right upper arms are The auxiliary two-step device can be deployed and stored very smoothly by rotating around the support shaft.

 In the vehicle loading / unloading assisting two-step device of the present invention, the left and right upper arms are arranged on the outside, the first left and right connecting arms are arranged on the inside, and further, on the side of the first step plate on the left and right Left and right first four-side links that are connected by shaft connection are provided, a lower extension of the first left and right connecting arm and a tip extension of the left and right outer side plates of the first step plate are provided, The upper ends of the second left and right connecting arms are pivotally connected to the left and right outer surfaces of the distal end portion of the tip extension, and the lower ends of the first left and right connecting arms are pivotally connected to the left and right outer surfaces of the base end portion of the second step step plate. Thus, the first left and right connecting arms and the second left and right connecting arms can operate without colliding when the auxiliary two-step device is deployed and stored.

  The vehicle loading / unloading assisting two-step device of the present invention can be securely provided by the rigidity of the first-step step plate and the second-step step plate, and can be used with peace of mind with little forward / backward and left / right fluctuations when getting on / off under load. be able to.

It is a top view at the time of the expansion | deployment of the boarding / alighting assistance two-step apparatus for vehicles of this invention. Similarly, it is a left side view. Similarly, it is the left view which omitted the drive mechanism. Similarly, it is a right side view. It is a partial side view of the AA view of FIG. It is a partial side view of the BB view of FIG. It is explanatory left view which shows the standing state of the 1st step step board and the 2nd step step board at the time of storing of the boarding / alighting auxiliary two step device of the present invention. The mesh of the motor output gear of the drive mechanism and the first stage intermediate large / small transmission gear, the second stage intermediate coupling gear, the third stage intermediate large / small transmission gear, the fourth stage large / small transmission gear, and the base end coupling gear of the left upper arm is shown. It is a side view. It is a side view which shows the meshing / release mechanism of the motor | power_engine output gear of a drive mechanism, and the large diameter gear part of a 1st step intermediate | middle large / small transmission gear. Arrangement of standing detection limit switch and overturn detection limit switch for detecting when the vehicle loading / unloading assisting step is retracted by abutting the standing operation element and the overturning operation element that protrudes from the outer periphery of the base end of the right upper arm 10b. It is an arrangement drawing showing a situation.

 A first stage step plate pivoted between a folding storage position in an upright state and a step position projecting sideways, with a proximal end pivotally supported by the vehicle, and above the left and right side portions of the first stage step plate, The base end is pivotally supported by the vehicle, and the left and right upper arms rotate between the folding storage position in the upright state and the step position protruding sideways, and the upper end is at the lower end of the left and right upper arms. Left and right first connecting arms that are pivotally supported at intermediate portions of the left and right outer surfaces near the tip of the first step plate, and a base end is pivotally supported at the lower ends of the left and right first connecting arms, The lower end portion of the left and right second connecting arm pivotally supported by the front end portion of the left and right extending side portion, the upper end portion extending forward from the front end of the first step plate on the left and right outer surfaces of the front intermediate portion Each of which has a second stage step plate that is pivotally supported. -A first reduction gear which is provided with a motor bracket provided with a motor gear motor, at least one of the base end portions of the arm is mounted on the fan-shaped tooth portion so as to be movable up and down. And a gear box including a relay gear, a second reduction gear, a third reduction gear, and a reduction drive mechanism provided with an output pinion on the third reduction gear. The first reduction gear of the reduction drive mechanism is large. It is provided with a diameter gear part and a small diameter gear part, and the large diameter gear part is opposed to the motor gear. When the motor bracket is lowered, the gear is engaged with the motor gear to transmit the rotation, and when the motor bracket is raised, the gear is engaged with the motor gear. , The rotation of the reduction drive mechanism is released, the relay gear is always meshed with the small diameter gear of the first reduction gear, and the second reduction gear is the large diameter gear portion. A small-diameter gear portion, the large-diameter gear portion of the second reduction gear is always meshed with the relay gear, and the third reduction gear is provided from a large-diameter gear portion and an output pinion that is a small-diameter gear portion. The large-diameter gear portion of the reduction gear always meshes with the small-diameter gear portion of the second reduction gear, transmits the rotation of the second reduction gear, rotates the output pinion, and the gear box is rotatably provided with a knob. The screw shaft is moved up and down by rotation of the knob, and the motor bracket that is supported on the screw shaft is moved along the guide shaft fixed to the gear box by the guide hole provided in the motor bracket, and the deceleration drive is performed. The output pinion of the mechanism is engaged with at least one of the base end portions of the left and right upper arms with the fan-shaped tooth portion, and the two-step automatic overturning deployment and the automatic standing storage are operated according to the rotation direction of the speed reduction drive mechanism. Descent assist two-step device.

 The vehicle entry / exit assistance two-step device of the present invention will be described with reference to the vehicle entry / exit assistance two-step device 1 of the embodiment shown in the drawings. It is installed on the installation surface 3a of the recess installation part 3 of the above.

 In the base frame 2, a left end bearing support plate 4a and a right end bearing support plate 4b are erected on the upper surfaces of both ends of the bottom plate 2a, and the base frame 2 is provided on the left end bearing support plate 4a and the right end bearing support plate 4b. A left bearing hole 5a and a right bearing hole 5b are formed at the same height from the upper surfaces of both ends of the bottom plate 2a and on the same left and right axis, and the left bearing hole 5a and the right bearing hole 5b include The first left base end shaft 7a and the first right base end shaft 7b projecting from both side surfaces of the base end portion of the first step plate 6 are fitted and inserted, and the first step step plate 6 is supported in a undulating manner.

 On the left side of the left end bearing support plate 4a, a gear box 9 having a bearing wall plate 8 provided on the right side is provided with a space F in which a left upper arm 10a is provided, and a bottom plate of the base frame 2 is provided. 2a, the upper left bearing hole 11a is positioned higher than the left bearing hole 5a and the right bearing hole 5b, and is opposed to the same left and right axis on the left end bearing support plate 4a. The right bearing holes 11b are respectively opened in the right end bearing support plate 4b.

Wherein the high left bearing hole 11a, a support shaft 12a provided integrally with the base end of the left upper arm 10a is fitted interpolated with the left upper arm 1 0a is deployed rotatably. A support shaft 12b provided integrally with the base end portion of the right upper arm 10b is fitted into the high-order right bearing hole 11b, and the right upper arm 10b is rotatably disposed.

 As another embodiment, the support shaft 12a and the support shaft 12b may be fixed to the high-order left bearing hole 11a and the high-order right bearing hole 11b, respectively. In this case, the left upper arm 10a and the right upper arm The base end portion of 10b may be provided with a bearing hole, and may be rotatably supported by the support shaft 12a and the support shaft 12b.

  The upper left end of the first left connecting arm 13a is pivotally connected to the inner surface of the front end of the left upper arm 10a by the first left upper support shaft 14a, and the intermediate portion closer to the front end is the first left middle. A pivot 15a is rotatably connected to the left outer surface of the intermediate portion near the tip of the first step plate 6 and its lower end is disposed on the left outer surface of the base end portion of the second step plate 16. The second left base shaft 17a is rotatably connected.

 The upper end of the first right connecting arm 13b is pivotally connected to the inner surface of the distal end portion of the right upper arm 10b by the first upper right end support shaft 14b, and the intermediate portion closer to the distal end is the first right intermediate portion. A pivot 15b is pivotally connected to the right outer surface of the intermediate portion near the tip of the first step plate 6 and its lower end is disposed on the right outer surface of the base end portion of the second step plate 16. The second right base end shaft 17b is rotatably connected.

The length between the first left base end shaft 7a at the base end of the first step step plate 6 and the first left intermediate support shaft 15a near the front end and the support at the base end of the left upper arm 10a. The length between the shaft 12a and the first left upper end support shaft 14a at the tip is the same. The length between the upper and lower sides of the first left base end shaft 7a at the base end portion of the first step step plate 6 and the support shaft 12a at the base end portion of the left upper arm 10a is the tip of the first step step plate 6 Since the first left intermediate support shaft 15a at the intermediate portion and the first left upper support shaft 14a at the tip of the left upper arm 10a have the same length between the upper and lower sides, the first left connecting arm 13a and the left The upper arm 10a, the first step step plate 6, and the left end bearing support plate 4a constitute a first step left parallel side link 18a.

The length between the first right intermediate shaft 15b of the first Migimototan shaft 7b and the distal end portion near the middle portion of the base end portion of the first stage step plate 6, supporting the proximal end of the right upper arm 10b The length between the shaft 12b and the first upper right end support shaft 14b at the tip is the same. In addition, the length between the first right base end shaft 7b at the base end portion of the first step step plate 6 and the support shaft 12b at the base end portion of the right upper arm 10b is the top end of the first step step plate 6 the length and configured to the same between the upper and lower parts near the middle portion of the first right intermediate shaft 15b and the right upper arm 10b tip end portion of the first upper right end shaft 14b, the first right connection arm 13b the first stage right parallelogram link 18b constitute a right upper arm 10b and the first-stage step plate 6 and the right end bearing support plate 4b.

The left outer plate 6a of the first stage step plate 6, to the front of the front edge of the first-stage step plate 6 is extended Kaname Tokoro length, the left outer surface of the distal end portion, the first left intermediate supporting An upper end portion of the second left connecting arm 20a is pivotally supported by a second left upper end supporting shaft 19a arranged at a predetermined distance forward from the shaft 15a, and the lower end portion of the second left connecting arm 20a is the first lower end portion. It has left intermediate shaft 15a and the same interval and second Hidarimototan shaft 17a, and the second Hidarimototan axis with the same spacing as the distance between the first left intermediate shaft 15a and the second upper-left corner support shaft 19a The left outer surface of the intermediate portion of the second step step plate 16 is connected by a second left front support shaft 21a that is arranged to project from the left outer surface of the intermediate portion of the second step step plate 16 ahead of 17a.

The right outer plate 6b of the first step step plate 6 extends a required length forward from the front edge of the first step step plate 6, and the first right intermediate support shaft is formed on the right outer surface of the tip portion. 15b and the second upper right end support shaft 19b are arranged at the same interval as the first left intermediate support shaft 15a and the second left upper end support shaft 19a of the left outer plate 6a, and the second upper right end support shaft 19b The upper end portion of the second right connecting arm 20b is pivotally supported, and the lower end portion of the second right connecting arm 20b has the same interval as the first left intermediate support shaft 15a and the second left proximal end shaft 17a, and the first A second step step plate is provided by a second right front support shaft 21b arranged to protrude from the right outer surface of the intermediate portion of the second step step plate 16 at the same interval as the left intermediate support shaft 15a and the second left upper end support shaft 19a. The right outer surface of the intermediate part of 16 is connected.

The left outer plate 6a between the first left intermediate support shaft 15a and the second left upper end support shaft 19a, and the left outer side of the second step step plate 16 between the second left base shaft 17a and the second left front support shaft 21a. Part 16a , first left connecting arm 13a between first left intermediate support shaft 15a and second left base shaft 17a, and second left connection between second left upper support shaft 19a and second left front support shaft 21a. The arm 20a forms a second-stage left four-sided link 22a.

A right outside panel 6b between the first right intermediate shaft 15b and the second upper right end shaft 19b, the right outside of the second-step plate 16 between the second Migimototan shaft 17b and the second right front side support shaft 21b The second right between the side portion 16b , the first right connecting arm 13b between the first right intermediate support shaft 15b and the second right proximal shaft 17b, and the second right upper support shaft 19b and the second right front support shaft 21b. The connecting arm 20b forms a second-stage right-side link 22b.

 As described above, the vehicle loading / unloading assisting two-step step device 1 of the embodiment shown in the drawings of the present invention includes the first step step plate 6 and the second step step plate 16 and the first step left parallel side link 18a and the second step step plate 16. The first stage right parallelogram link 18b, the second stage left parallelogram link 22a, and the second stage right parallelogram link 22b are connected.

 As an embodiment, a base end portion of the left upper arm 10a is formed in a fan-shaped gear portion 23 centering on the support shaft 12a, and an output pinion 24 disposed in the gear box 9 on the fan-shaped gear portion 23. In the configuration in which the left and right meshes mesh with each other, the left upper arm 10a rotates about the support shaft 12a that supports the base end portion and the right upper arm 10b rotates about the support shaft 12b that supports the base end portion as the output pinion 24 rotates. To do. For example, from the state where the first step plate 6 and the second step step plate 16 and the first and second links to be connected are erected, as shown in FIGS. The step board 16 is protruded to the side of the vehicle, and the vehicle entry / exit assistance two-step apparatus 1 is provided. Then, the left upper arm 10a and the right upper arm 10b shown in FIG. 7 are erected by the reverse rotation of the output pinion 24, and the first step plate 6 and the second step plate 16 are connected to the first and second links. It is to be stored in the state.

In the gear box 9, a motor bracket 27 on which a motor 26 including a motor gear 25 is mounted is arranged so as to be movable up and down, and a first reduction gear 28 that meshes with the motor gear 25 to a relay gear 29 and a second reduction gear 30. and the third through the reduction mechanism 32 of the reduction gear 31 rotates the output pinion 24 has a smaller diameter gear portion of the third reduction gear 31, and transmitted to the fan-shaped gear portion 23 of the left upper arm 10a.

 Although not shown, the rotation shaft of the motor 26 and the motor gear 25 can transmit the rotation from the motor 26 like the meshing of the worm gear and the wheel gear, but cannot transmit the rotation of the opposite wheel gear. Are connected by.

  The first reduction gear 28 of the reduction mechanism 32 is provided with a large-diameter gear portion 28a and a small-diameter gear portion 28b. The large-diameter gear portion 28a faces the motor gear 25, and the motor gear 27 is lowered when the motor bracket 27 is lowered. Rotation is transmitted by meshing with 25. When the motor bracket 27 is raised, it is not engaged with the motor gear 25, and the rotation of the speed reduction mechanism 32 is released.

 The relay gear 29 is always meshed with the large-diameter gear portion 28 a of the first reduction gear 28, and the rotation is transmitted to rotate together with the first reduction gear 28.

 The second reduction gear 30 is provided with a large-diameter gear portion 30a and a small-diameter gear portion 30b, and the large-diameter gear portion 30a is always meshed with the relay gear 29 and the rotation is transmitted.

 The third reduction gear 31 is provided from a large-diameter gear portion 31a and an output pinion 24 that is a small-diameter gear portion. The large-diameter gear portion 31a is always meshed with the small-diameter gear portion 30b of the second reduction gear 30, and 2 The rotation of the reduction gear 30 is transmitted, the output pinion 24 which is a small diameter gear portion is rotated, and the rotation is transmitted to the fan-shaped gear portion 23 of the left upper arm 10a.

 In the gear box 9, a knob 33 is rotatably arranged. The screw bracket 34 is moved up and down by the rotation of the knob 33, and the motor bracket 27 supported on the screw shaft 34 is provided in a guide hole 35 a provided in the motor bracket 27. , 35b move along guide shafts 36a, 36b fixed to the gear box 9.

 When the motor bracket 27 is raised, the engagement between the motor gear 25 and the large-diameter gear portion 28a of the first reduction gear 28 is eliminated, the left upper arm 10a is freed, and the first step step plate 6 and the second step step plate 16 are engaged. Can be operated and stored manually. After storing, if the motor gear 25 and the large-diameter gear portion 28a of the first reduction gear 28 are meshed by rotating the knob 33, the motor gear 25 cannot be rotated, that is, the left upper arm 10a and the right gear Since the speed reduction mechanism 32 cannot be rotated by manually operating the upper arm 10b, the left upper arm 10a and the right upper arm 10b can be locked in the standing state.

 On the outer periphery of the base end portion of the right upper arm 10b, an upright operation element 37a and a prone operation element 37b are provided so as to project approximately 180 degrees. The standing detection limit switch 38a and the overturn detection limit switch 38b are arranged on the outer surface of the right end bearing support plate 4b corresponding to the position.

 Although not shown, a support shaft 12a for supporting the left upper arm 10a or a support shaft 12b for supporting the right upper arm 10b is provided integrally with the left upper arm 10a or the right upper arm 10b, and the support shaft 12a or the support shaft 12b. Is connected to a speed reduction mechanism 32 such as the third speed reduction gear 31 to transmit the rotation from the motor 26, and the left upper arm 10a is operated to store the entire step device 1 in an upright position or in a lying down state. It is good.

 As an embodiment in which the support shaft 12a or the support shaft 12b is connected to a speed reduction mechanism 32 such as the third speed reduction gear 31, a gear is attached to the support shaft 12a or the support shaft 12b, and the gear and the third speed reduction gear are connected. It is good also as what meshes with the output pinion 24 of the gearwheel 31. FIG.

 Further, at least one of the first left base end shaft 7a or the first right base end shaft 7b that pivotally supports the base end portion of the first step step plate 6 is provided integrally with the first step step plate 6, and is provided integrally therewith. The first left base shaft 7a or the first right base shaft 7b and the speed reduction mechanism 32 such as the third speed reduction gear 31 are connected to transmit the rotation from the motor 26, and the first step 6 is operated. Thus, the entire step device 1 may be stowed or stored in an inverted manner.

 Although not shown in the drawings, the first left base shaft 7a or the first right base shaft 7a or the first right base shaft 7b is connected to a speed reduction mechanism 32 such as the third speed reduction gear 31. A gear may be attached to the base end shaft 7 b and the gear may be engaged with the output pinion 24 of the third reduction gear 31.

 When the right upper arm 10b is stood up, the standing operator 37a contacts the contact plate 39a to input the standing detection limit switch 38a, and the power supply circuit to the motor 26 is opened and stopped. The step device 1 maintains the stored state. Further, when the right upper arm 10b is deployed, the overturning operator 37b contacts the contact plate 39b and inputs the overturn detection limit switch 38b, opens the power supply circuit to the motor 26, stops, and deploys. The vehicle entry / exit assistance two-step apparatus 1 maintains the two-step state with respect to the road surface 40.

 The vehicle entry / exit assisting two-step device of the present invention is compactly installed in a vehicle, can smoothly perform two-step automatic deployment and automatic storage, and responds to the traffic needs of an aging society.

  The vehicle entry / exit assisting two-step device for a vehicle according to the present invention can be provided robustly, has a small step difference in getting on and off the road surface, is less swayed, and can be used safely by anyone including elderly people.

DESCRIPTION OF SYMBOLS 1 Vehicle entry / exit assistance two-step apparatus 2 Base frame 2a Bottom plate 3 Recessed installation part 3a Installation surface 4a Left end bearing support plate 4b Right end bearing support plate 5a Left bearing hole 5b Right bearing hole 6 First step step plate 6a Left outside Plate 6b Right outer side plate 7a First left base end shaft 7b First right base end shaft 8 Bearing wall plate 9 Gear box 10a Left upper arm 10b Right upper arm 11a Higher left bearing hole 11b Higher right bearing hole 12a Support shaft 12b Support shaft 13a First left connecting arm 13b First right connecting arm 14a First left upper support shaft 14b First upper right support shaft 15a First left intermediate support shaft 15b First right intermediate support shaft 16 Second step step plate
16a Left outer part
16b Right outer portion 17a Second left base end shaft 17b Second right base end shaft 18a First stage left quadrilateral link 18b First stage right quadrilateral link 19a Second left upper end support shaft 19b Second upper right end support shaft 20a First 2 left connecting arm 20b 2nd right connecting arm 21a 2nd left front support shaft 21b 2nd right front support shaft 22a 2nd stage left quadrilateral link 22b 2nd stage right quadrilateral link 23 fan-shaped gear section 24 output pinion 25 Motor gear 26 Motor 27 Motor bracket 28 First reduction gear 28a Large diameter gear portion 28b Small diameter gear portion 29 Relay gear 30 Second reduction gear 30a Large diameter gear portion 30b Small diameter gear portion 31 Third reduction gear 31a Large diameter gear portion 32 Deceleration Mechanism 33 Knob 34 Screw shaft 35a Guide hole 35b Guide hole 36a Guide shaft 36b Guide shaft 37a Standing operation element 37b Prone operation element 8a standing detection limit switch

Claims (4)

  A first stage step plate pivoted between a folding storage position in an upright state and a step position projecting sideways, with a proximal end pivotally supported by the vehicle, and above the left and right side portions of the first stage step plate, The base end is pivotally supported by the vehicle, and the left and right upper arms rotate between the folding storage position in the upright state and the step position protruding sideways, and the upper end is at the lower end of the left and right upper arms. Left and right first connecting arms that are pivotally supported at intermediate portions of the left and right outer surfaces near the tip of the first step plate, and a base end is pivotally supported at the lower ends of the left and right first connecting arms, The lower end portion of the left and right second connecting arm pivotally supported by the front end portion of the left and right extending side portion, the upper end portion extending forward from the front end of the first step plate on the left and right outer surfaces of the front intermediate portion Each comprising a second stage step plate that is pivotally supported. For vehicles in which at least one of the base ends of the arm is provided on the fan-shaped teeth and meshes with the output pinion of the speed reduction drive mechanism, and the two-step automatic overturning deployment and automatic upright storage are operated according to the rotation direction of the speed reduction drive mechanism Boarding / alighting two-step device.  A first stage step plate pivoted between a folding storage position in an upright state and a step position projecting sideways, with a proximal end pivotally supported by the vehicle, and above the left and right side portions of the first stage step plate, The base end is pivotally supported by the vehicle, and the left and right upper arms rotate between the folding storage position in the upright state and the step position protruding sideways, and the upper end is at the lower end of the left and right upper arms. Left and right first connecting arms that are pivotally supported at intermediate portions of the left and right outer surfaces near the tip of the first step plate, and a base end is pivotally supported at the lower ends of the left and right first connecting arms, The lower end portion of the left and right second connecting arm pivotally supported by the front end portion of the left and right extending side portion, the upper end portion extending forward from the front end of the first step plate on the left and right outer surfaces of the front intermediate portion Each of which is supported by a second stage step plate, One of the support shaft that pivotally supports the base end portion of the plate plate or the support shaft that pivotally supports the base end portion of the left and right upper arms is provided on at least the drive shaft and is linked to the speed reduction drive mechanism, and the rotation of the speed reduction drive mechanism A two-step auxiliary stepping device for a vehicle that activates two-step automatic overturning deployment and automatic upright storage according to the direction.  A motor bracket equipped with a motor equipped with a motor gear is arranged so as to be movable up and down, and a first reduction gear, a relay gear, a second reduction gear, and a third reduction gear that mesh with the motor gear and reduce the transmission of rotation. The vehicle step-in / out auxiliary two-step step device according to claim 1, further comprising a gear box including a reduction drive mechanism provided with an output pinion in the third reduction gear.   The first reduction gear of the 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 the motor bracket meshes with the motor gear when the motor bracket is lowered to transmit the rotation. When the motor bracket is raised, the meshing with the motor gear is lost, the rotation of the reduction drive mechanism is released, the relay gear is always meshed with the small diameter gear of the first reduction gear, and the second reduction gear is coupled with the large diameter gear portion and the small diameter gear. A large-diameter gear portion of the second reduction gear is always meshed with the relay gear, and a third reduction gear is provided from a large-diameter gear portion and an output pinion that is a small-diameter gear portion, 4. A vehicle step-in / out auxiliary two-stage step device according to claim 3, wherein the large-diameter gear portion of the gear always meshes with the small-diameter gear portion of the second reduction gear, transmits the rotation of the second reduction gear, and rotates the output pinion. .

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