JP4949090B2 - Step structure for vehicles - Google Patents

Description

  The present invention relates to a vehicle step structure provided in a vehicle.

  2. Description of the Related Art Conventionally, a step is provided at a lower part of a vehicle entrance / exit, and the vehicle can be used as a scaffold for getting on / off.

  As this step, a storage type stored in the lower part of the vehicle body is known, and the step can be extended to the side of the vehicle when getting on and off.

  When such a step is adopted for a vehicle having a strict minimum ground clearance requirement, the step must be stored as high as possible. In this case, it becomes difficult to ensure a sufficient depth dimension in order to avoid interference with the vehicle under floor component.

  Therefore, the step is composed of a main tread surface driven by an arm and a flap rotatably supported on the main tread surface, and a sufficient step width can be obtained by tilting the flap on the extension of the main tread surface. It came to devise the structure which can secure.

  However, in such a step structure, it is conceivable to use independent drive sources to drive the arm and the flap that move differently, but this complicates the control and increases the cost. Concerned.

  The present invention has been made in view of such a conventional problem, and an object of the present invention is to provide a vehicle step structure that can be easily controlled without causing an increase in cost.

Wherein is a problem in the vehicle dual step structure of the present invention to solve the, storage state attracted the step to swing the arm supporting the steps in the deployed state and the vehicle lower side extending to the side of the vehicle The step is composed of a main tread surface and a flap that is rotatably supported on the main tread surface, and the flap stands up with respect to the main tread surface in the retracted state. In addition, in the vehicle step structure in which the flap is arranged on the extension of the main tread surface in the unfolded state, the drive source that rotates the arm between the retracted state and the unfolded state and the swing operation of the arm and a linkage mechanism for driving the flaps and, connecting the rotatably supported rotary link to the main tread surface and the main the arm which is rotatably supported on the tread surface Link to convert the swing operation of the arm into a rotation operation of the rotation link, and a push rod is provided between the flap supported on the main tread surface and the rotation link, and the rotation link The interlocking mechanism is configured by a link mechanism that moves the push rod in the length direction in accordance with the rotation operation to change the angle of the flap with respect to the main tread surface.

  That is, when the arm is rotated between the retracted state and the unfolded state by the drive source, the flap supported on the main tread surface is rotated in conjunction with the swing operation of the arm.

  For this reason, the flap that moves differently from the swing of the arm is driven by a drive source that drives the arm.

Further , when the arm is swung by the drive source, the swinging motion of the arm is transmitted to the rotation link via the connection link, and the rotation link rotates. Then, the angle of the flap with respect to the main tread surface is varied by the push rod moving in the length direction in accordance with the rotation operation of the rotation link.

Or In the car dual step structure of the present invention, as described, by providing the interlocking mechanism for driving the flap in association with the swing motion of the arm, the swing of the arm driving source for driving the arm It is possible to drive the flap that moves differently.

  Therefore, the control can be simplified and the cost can be reduced as compared with the case where a drive source for swinging the arm and a drive source for driving the flap are provided.

Further, a connection link which is driven in the previous SL arm, by providing the rotation link is rotated by the connecting link, and said push rod for driving the flap in rotation of the pivoting link, the interlocking A mechanism can be configured.

  Thereby, simplification of a structure can be achieved.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a vehicular step 1 having a vehicular step structure according to the present embodiment, in which a swing movable vehicular step 1 is shown. The vehicle step 1 is adopted in a vehicle having strict minimum ground clearance requirements, and the step 2 constituting the vehicle step 1 is divided into two in the depth direction in order to avoid interference with the underfloor parts of the vehicle. Yes.

  This vehicle is provided with a front seat entrance for getting on and off the front seat and a rear seat entrance for getting on and off the rear seat. The length extends from the lower part to the lower part of the entrance / exit for the rear seat. Accordingly, the step 2 can be used as a scaffold when getting on and off from the front seat entrance and exit and from the rear seat entrance.

  A support bracket 11 is fixed to the lower part of the vehicle, and a support arm 12 extends from the support bracket 11. The support arm 12 is pivotally supported at the base end portion thereof by the support bracket 11, and the support arm 12 is configured so that the tip end portion thereof can be rotated in the vehicle front-rear direction.

  A drive unit bracket 21 is fixed to a lower portion of the vehicle at a position away from the support bracket 11, and a drive arm 22 extends from the drive unit bracket 21. The drive arm 22 is pivotally supported by the drive unit bracket 21 at the base end portion, and the drive arm 22 is configured to be able to rotate the tip end portion in the vehicle front-rear direction. .

  The step 2 is supported at the distal ends of the arms 12 and 22, and the step 2 is performed by swinging around the base ends of the arms 12 and 22 as shown in FIG. It is comprised so that the expansion | deployment state 31 extended to the side of the vehicle can be formed. Further, by swinging around the base end portions of the arms 12 and 22, as shown in FIG. 2, the storage state 32 in which the step 2 is pulled toward the vehicle lower side can be formed. .

  The step 2 includes a main tread surface 41 supported by the arms 12 and 22 and a flap 42 rotatably supported at a tip end portion of the main tread surface 41. The tread surface 41 is formed by extrusion molding of aluminum.

  As shown in FIG. 1, the flap 42 is configured to be able to form a tilted state 51 disposed on the extension of the main tread 41, and in this tilted state 51, downward rotation is prevented. It is configured to be. Thus, in the tilted state 51, the upper surface of the main tread surface 41 and the upper surface of the flap 42 are configured to form a flat step surface.

  Further, as shown in FIG. 2, the flap 42 is urged in a direction to stand up with respect to the main tread surface 41 by an urging means (not shown). It is configured to prevent falling down. And in this standing state 61, it is comprised so that the said flap 42 can be extended along the side sill of a vehicle.

  As shown in FIG. 3, the drive unit bracket 21 is provided with a drive unit 71 that rotates the drive arm 22, and the drive unit 71 serves as a drive source fixed to the drive unit bracket 21. The motor 72 is provided.

  An output gear 81 provided on the motor 72 meshes with an intermediate gear 82, and the intermediate gear 82 meshes with a gear portion 83 formed at the base end of the drive arm 22. Thereby, the drive arm 22 is rotated by the motor 72 so that the retracted state 32 and the unfolded state 31 can be formed.

  A distal end portion of the drive arm 22 is rotatably supported by the main tread surface 41 via a support shaft 91, and a connection link 92 is pivotally connected to the drive arm 22 on the base end side from the support shaft 91. The shaft 93 is pivotally supported via the portion 93. The connection link 92 extends along the main tread surface 41, and is pivotally supported on the front end side of the connection link 92 by the main tread surface 41 via a rotation shaft 94. A link 95 is provided.

  The distal end portion of the connection link 92 is pivotally supported by a drive shaft 102 provided on the extension portion 101 of the rotation link 95 extending toward the flap 42, and the connection link 92 is The drive arm 22 and the rotation link 95 are connected to form a conversion mechanism for converting the swing operation of the drive arm 22 into the rotation operation of the rotation link 95.

  A driven shaft 115 formed by bending one end of the push rod 112 is rotatably inserted into a corner portion 111 of the rotation link 95 near the drive unit 71. A bent portion 113 formed by bending the other end portion is inserted into an engagement hole 114 provided at the proximal end portion of the flap 42.

  As a result, a link mechanism is constructed in which the push rod 112 is moved back and forth in the length direction in accordance with the rotation operation of the rotation link 95 to change the angle of the flap 42 with respect to the main tread surface 41. Thus, an interlocking mechanism 121 that drives the flap 42 in conjunction with the swing operation of the drive arm 22 is configured.

  In the present embodiment according to the above configuration, the motor 72 of the drive unit 71 is operated to rotate the drive arm 22 between the retracted state 32 and the deployed state 31, thereby supporting the main tread surface 41. The flap 42 thus made can be rotated in conjunction with the swing operation of the drive arm 22. For this reason, the flap 42 that moves differently from the swing of the drive arm 22 can be driven by the motor 72 that drives the drive arm 22.

  More specifically, when the motor 72 swings the drive arm 22 in the retracting direction 131, when the step 2 supported by the drive arm 22 is drawn toward the vehicle side 132, the drive arm 22 swings at that time. The operation is transmitted to the rotation link 95 via the connection link 92, and the rotation link 95 rotates in the storage direction 133. Then, in accordance with the rotation operation of the rotation link 95, the push rod 112 moves in the extending direction 134 extending in the length direction, thereby pushing out the base end portion of the flap 42. An upright state 61 is formed upright with respect to the main tread 41.

  On the other hand, when the motor 72 is reversed and the drive arm 22 is swung in the unfolding direction 141, the step 2 supported by the drive arm 22 extends toward the vehicle side 142. The swing motion is transmitted to the rotation link 95 via the connection link 92, and the rotation link 95 rotates in the deployment direction 143. Then, in accordance with the rotation operation of the rotation link 95, the push rod 112 moves in the backward direction 144 in which the push rod 112 moves backward, whereby the base end portion of the flap 42 is pulled back, and the flap 42 is moved to the main tread surface 41. A tilted state 51 extending on the extension is formed.

  In this way, by providing the interlock mechanism 121 that drives the flap 42 in conjunction with the swing operation of the drive arm 22, only the motor 72 that drives the drive arm 22 can be used to perform the swing operation of the drive arm 22. This operation and the tilting operation of the flap 42 can be performed simultaneously.

  Therefore, the control can be simplified and the cost can be reduced as compared with the case where a drive source for swinging the drive arm 22 and a drive source for driving the flap 42 are provided. Can do.

  The connection link 92 driven by the drive arm 22, the rotation link 95 rotated by the connection link 92, and the push rod that drives the flap 42 by the rotation of the rotation link 95. 112 is provided, the interlocking mechanism 121 can be configured.

  Thereby, simplification of a structure can be achieved.

It is a figure which shows one embodiment of this invention. It is a figure which shows the storage state of the embodiment. It is explanatory drawing which shows the mechanism part of the embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Step for vehicles 2 Step 22 Drive arm 31 Expanded state 32 Stored state 41 Main tread surface 42 Flap 72 Motor 92 Connection link 95 Turning link 112 Push rod 121 Interlocking mechanism

Claims (1)

A swing movable type that swings an arm that supports a step to form an unfolded state in which the step is extended to the side of the vehicle and a retracted state in which the step is drawn toward the lower side of the vehicle. A vehicle configured with a flap rotatably supported on a tread, wherein the flap is raised with respect to the main tread in the retracted state, and the flap is disposed on an extension of the main tread in the unfolded state In step structure for
A drive source for rotating the arm between the retracted state and the unfolded state;
An interlocking mechanism for driving the flap in conjunction with the swing motion of the arm;
Equipped with a,
The arm supported rotatably on the main tread surface and the rotation link rotatably supported on the main tread surface are connected by a connecting link, and the swing operation of the arm is changed to the rotation operation of the rotation link. With conversion,
A push rod is provided between the flap supported on the main tread surface and the rotation link, and the push rod is moved in the length direction along with the rotation operation of the rotation link, and the flap with respect to the main tread surface is provided. A step structure for a vehicle, characterized in that the interlocking mechanism is constituted by a link mechanism that varies the angle .

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