JP6348923B2 - Slope unit system - Google Patents

Description

  The present invention relates to a slope unit system suitably used for getting on and off a load such as a wheelchair in a vehicle such as a passenger car.

  Patent Document 1 discloses a retractable slide slope including a slope unit in which a plurality of slope plates are slidably coupled to each other, and slope storage means for storing the slope units in a superposed manner.

JP 2001-276134 A

  For example, as shown in FIGS. 8A to 8C, an arm A pivotally supported with respect to a bracket B that is a vehicle body side member is used as a slope storage means, and a slope unit SU is provided. A state is assumed in which the vehicle is housed in the vehicle compartment in a substantially horizontal state via the arm A. One end of the arm A along the axial direction is pivotally attached to the bracket B, and the other end of the arm A along the axial direction is pivotally attached to the slope unit SU. . In the state where the slope unit SU is housed in the vehicle compartment, the slope unit SU is assumed to be in a free state that is not fixed by, for example, a lock means or the like.

  In the storage state of the slope unit SU as described above, for example, when a collision load (rear collision load) F is input from the rear of the vehicle, the bracket B that supports the arm A moves toward the front of the vehicle due to inertial force. In addition, the slope unit SU moves toward the vehicle rear side (see FIG. 8A). Subsequently, the bracket B interferes with the slope unit SU, the tip of the slope unit SU slightly rises, and the tailgate TG moves toward the vehicle front side and interferes with the slope unit SU (FIG. 8B). )reference).

  As a result, the slope unit SU rotates in the clockwise direction, and the vehicle front end portion of the slope unit SU jumps upward. For example, the tip of the slope unit SU that jumps upward may come into contact with the seat back SB (see FIG. 8C).

  The present invention has been made in view of the above points, and an object of the present invention is to provide a slope unit system capable of avoiding movement due to inertial force of a slope unit when a load is input.

  In order to achieve the above object, the present invention is a vehicle slope unit system having a slope unit composed of one or more slope plates, wherein the slope unit is rotated with respect to a mounting surface of a vehicle body side member. The arm includes a movably mounted arm, and the arm is capable of rotating the slope unit and a first fulcrum for pivotally supporting the slope unit and the arm with respect to the mounting surface of the vehicle body side member. And a second fulcrum that pivotally supports the vehicle, and includes an inertial movement preventing means for preventing movement of the slope unit housed in the vehicle interior in a substantially horizontal state by an inertial force when a load is input to the vehicle. And

  According to the present invention, by providing the inertia movement prevention means, the movement by the inertia force of the slope unit when a load is input to the vehicle is avoided, and the upward rotation operation of the slope unit is prevented. be able to.

  Further, the present invention is characterized in that an end portion on the development side of the vehicle body side member has a separation portion that is separated from the upper surface of the vehicle body via a clearance.

  According to the present invention, by providing the separation portion, when a load is input to the vehicle body, it is avoided that the end portion on the deployment side interferes with the upper surface of the vehicle body. It does not prevent the section from being folded into a substantially square shape. When the frame member or the like is bent downward, the vehicle body side member and the arm sink to the vehicle front side, so that the movement of the slope unit due to the inertial force can be avoided and the upward jumping of the slope unit can be prevented.

Further, according to the present invention, the vehicle has a tailgate that opens and closes an opening for deploying the slope unit outside the vehicle, and at least the arm or the slope plate extends toward the tailgate. extending portions have a, the extending portion, characterized in that it extends to the rear than the rear end portion of the slope unit accommodated in a substantially horizontal state in the vehicle interior.

  According to the present invention, it is possible to prevent interference between the slope unit and the vehicle body side member by bringing the extending portion of the arm or the slope plate into contact with the tail gate before the slope unit is displaced rearward by the inertial force. Can do. As a result, in this invention, it can avoid suitably that the front-end | tip of a slope unit jumps up.

  Furthermore, the present invention includes a hinge upper interposed between a portion on the end portion side of the slope unit adjacent to the second fulcrum and the arm, and the hinge upper is configured to input a load to the vehicle. It has the weak part which absorbs the load transmitted from the said arm, It is characterized by the above-mentioned.

  According to the present invention, when the load is input to the vehicle, the fragile portion that bends and breaks and deforms in the moving direction due to the inertial force is provided in the hinge upper, so that the slope unit can suitably absorb the force that moves due to the inertial force. it can.

  Furthermore, the present invention is characterized by comprising a regulating means for regulating the rotation range of the arm.

  According to the present invention, when the slope unit is deployed outside the vehicle and stored in the vehicle interior in a substantially horizontal state, the rotation range of the arm can be restricted to a desired rotation angle by the restriction means. .

  According to the present invention, it is possible to obtain a slope unit system capable of avoiding movement due to inertial force of a slope unit when a load is input.

1 is a schematic side view showing a state in which a slope unit system according to an embodiment of the present invention is applied to a vehicle. It is a partial expanded side surface structure figure of FIG. (A)-(c) is a side view which shows the expansion | deployment operation | movement of a slope unit. It is explanatory drawing which shows the operation | movement at the time of the input of a rear collision load with respect to the vehicle shown in FIG. 2A is a cross-sectional view taken along line VA-VA in FIG. 2, FIG. 2B is a cross-sectional view taken along line VB-VB in FIG. 2, and FIG. 2C is taken along line VC-VC in FIG. FIG. It is the bottom view which looked at the body panel from the bottom face side of vehicles. (A) is a schematic diagram which shows operation | movement of the extension part of the arm which concerns on this embodiment, (b) is a schematic diagram which shows operation | movement of the comparative example which the present applicant devised that the extension part is not provided. It is. (A)-(c) is a figure with which it uses for description of the state which a slope unit moves and jumps up by inertia force in a prior art.

  Next, embodiments of the present invention will be described in detail with reference to the drawings as appropriate. In each figure, “front and rear” indicates the vehicle longitudinal direction, “left and right” indicates the left and right direction (vehicle width direction) as viewed from the driver's seat, and “up and down” indicates the vertical vertical direction.

  As shown in FIG. 1, the slope unit system 10 according to the present embodiment is used, for example, in a vehicle 16 provided with a back door (tailgate) 14 that opens and closes a vehicle body rear opening 12.

  The vehicle 16 includes a vehicle body floor 18 that forms a passenger compartment. The vehicle body floor 18 is provided with a slope unit storage portion 19 for placing a wheelchair (not shown) mounted in the vehicle compartment via a grounded slope unit 20.

  As shown in FIG. 1, the slope unit system 10 includes a slope unit 20 having a plurality of slopes (slope plates) 20 a to 20 c, and a pair of brackets 22 that are fixed on the vehicle body floor 18 and function as vehicle body side members. The slope unit 20 is configured to include a pair of arms 24 that are rotatably attached to the bracket 22, and a pair of hinge uppers 26 that are disposed between the slope unit 20 and each arm 24.

<Bracket>
The pair of brackets 22 is located on the vehicle rear end side, bulges upward from the vehicle body floor 18 in a side view, and is disposed at a predetermined distance on both sides along the vehicle width direction. (See FIG. 1 and FIG. 6). Further, on both sides of the bracket 22 in the vehicle width direction, there are mounting surfaces 28 for mounting the slope unit 20.

  As shown in FIG. 2, a locking hole 30 that is substantially rectangular in a side view and penetrates in the vehicle width direction is formed on the upper rear side of the bracket 22. A claw portion 32 bent and provided in the central portion of the side edge of the arm 24 enters the locking hole portion 30 and functions as a restricting means for restricting the rotation range of the slope unit 20. That is, when the claw portion 32 is locked by the locking hole 30, the slope unit 20 is further rotated downward (vehicle body floor 18 side) when the slope unit 20 is stored in a substantially horizontal state in the vehicle interior. Is regulated.

  A first pin member 34 that pivotally supports both the slope unit 20 and the arm 24 is attached to the mounting surface 28 of the bracket 22. The slope unit 20 and the arm 24 are pivotally supported with respect to the bracket 22 with the first pin member 34 as a rotation center (first fulcrum). In the present embodiment, the bracket 22 that functions as a vehicle body side member is configured separately from the vehicle body and fixed on the vehicle body floor 18. For example, the bracket 22 is configured integrally with the vehicle body floor 18. Also good.

  At the vehicle rear end of the bracket 22, when the slope unit 20 and the arm 24 rotate in the clockwise direction around the pin member 34, the arm 24 comes into contact with the side edge portion of the arm 24 and rotates. The nail | claw part 36 which regulates bulge is formed. The claw portion 36 is formed by a protruding piece that protrudes outward from the mounting surface 28 of the bracket 22 in the vehicle width direction. When the side edge portion of the arm 24 abuts on the claw portion 36 of the bracket 22, the rotation range of the arm 24 in the clockwise direction (downward side) is restricted.

  Further, the end portion 22 a on the development side (vehicle rear side) of the bracket 22 has a separation portion 40 that is separated from the upper surface of the vehicle body via a clearance 38. The effect of the separation part 40 will be described in detail later.

<Slope unit>
As shown by a two-dot chain line in FIG. 1, the slope unit 20 is stretched between the rear opening 12 of the vehicle body and the grounding surface 42 (road surface), and is moved in the up and down direction when being substantially horizontally stored in the vehicle interior. Are formed by three slopes 20a to 20c stacked along the line. The slopes 20a to 20c are slidably coupled to each other via a slide mechanism (not shown), and are provided so as to expand and extend toward the rear outside the vehicle.

  In the present embodiment, the three slopes 20a to 20c are illustrated as the slopes constituting the slope unit 20, but the present invention is not limited to this, and the slope unit 20 may be composed of at least one slope. Good.

<Arm>
The arm 24 has a shape that is bent into a substantially U-shape when viewed from the side. A first pin member 34 that pivotally supports the slope unit 20 and the arm 24 is disposed at one end of the arm 24. A second pin member 44 that pivotally supports the slope unit 20 is disposed on the other end side opposite to the arm 24. The slope unit 20 is pivotally supported with respect to the arm 24 with the second pin member 44 as a rotation center (second fulcrum).

  The arm 24 has an extending portion 46 that extends toward the back door 14 side. When the slope unit 20 is in a substantially horizontal state in the passenger compartment, the extending portion 46 is configured by a protruding piece that protrudes obliquely upward toward the rear of the vehicle with the second pin member 44 as a base point. . The effect of the extension part 46 will be described in detail later.

<Hinge Upper>
A hinge upper 26 is attached to an end portion of the slope unit 20 adjacent to the arm 24 along the axial direction. The hinge upper 26 is pivotally attached to the arm 24 via the second pin member 44. The hinge upper 26 is disposed between the arm 24 and a portion on the end side of the slope unit 20 adjacent to the second pin member 44 that functions as a second fulcrum, and the side wall of the slope unit 20 via a connection pin (not shown). Are connected and fixed. The second pin member 44 rotatably connects the three members including the slope unit 20, the hinge upper 26, and the arm 24.

  The hinge upper 26 has a fragile portion 48 that absorbs the load transmitted from the arm 24 when a load is input to the vehicle 16 as described later (see FIG. 2). The hinge upper 26 is formed of a long plate body that extends along the axial direction of the slope unit 20. The axial straight section of the hinge upper 26 on the side of the slope unit 20 is formed in a substantially U-shape as shown in FIG. Further, the axial straight section of the portion of the hinge upper 26 on the arm 24 side is formed in a substantially L shape as shown in FIG.

  The fragile portion 48 is located between the portion on the slope unit 20 side and the portion on the arm 24 side, and the dimension in the width direction (direction orthogonal to the axis) in side view is larger than the portions on the slope unit 20 side and the arm 24 side. Is also formed narrow, and the axial straight section is configured as a thin flat plate as shown in FIG.

<Reinforcing patch>
As shown in FIG. 6, a pair of reinforcing patches 50 are provided on the lower surface (outer bottom surface) of the vehicle body floor 18 to suppress bending deformation upward of the vehicle body floor 18 when a rear impact load is input. The reinforcing patches 50 are formed in a substantially rectangular shape when viewed from the bottom, and are arranged in parallel along the vehicle width direction. The pair of reinforcing patches 50 are disposed between the center cross member 52 and the rear cross member 54 in the vehicle front-rear direction and closer to the rear cross member 54 than the center cross member 52. By providing the reinforcing patch 50 on the lower surface of the vehicle body floor 18, the rigidity and strength of the vehicle body floor 18 can be improved and the upward bending deformation at the time of load input can be suppressed.

  The slope unit system 10 according to the present embodiment is basically configured as described above. Next, the function and effect will be described.

First, the schematic operation of the slope unit 20 will be described.
When the slope unit 20 is in a substantially horizontal storage state in the vehicle interior, the slope unit 20 and the arm 24 rotate clockwise by a predetermined angle with the first pin member 34 as a rotation fulcrum. Inclined state of rising from the rear toward the front of the vehicle (FIG. 3 (a) → FIG. 3 (b)). In this inclined state, the center of gravity G of the slope unit 20 is located in front of the vehicle by a separation distance D from the rotation center of the first pin member 34 in the vehicle front-rear direction (see FIG. 3B).

  Subsequently, the slope unit 20 is turned upside down in a substantially vertical vertical direction by rotating clockwise by a predetermined angle with the second pin member 44 as a rotation fulcrum (FIG. 3C). ). This inverted state is set when a load such as a wheelchair (not shown) is mounted in the vehicle compartment via the slope unit 20.

  Further, the slope unit 20 is rotated by a predetermined angle in the clockwise direction with the second pin member 44 as a rotation fulcrum, and the slope units 20a to 20c are slid toward the outside of the vehicle to be developed. 20 is grounded to the ground plane 42 (see FIG. 1).

  In the present embodiment, the second pin member 44 can be rotated at a position close to the ground plane 42 by rotating the slope unit 20 and the arm 24 with the first pin member 34 as a rotation fulcrum. For this reason, in this embodiment, the distance to the 2nd pin member 44 and the grounding surface 42 can be shortened compared with a prior art. As a result, in this embodiment, the slope unit 20 can be made compact and light weight can be achieved.

  Moreover, in this embodiment, when the vehicle body floor 18 is an inclined surface inclined in the deployment direction (rear of the vehicle) or a concave shape that falls downward, the length of the arm 24 in the axial direction is appropriately set. The slope unit 20 can be set in a substantially horizontal storage state, and the slope unit storage portion 19 in which the slope unit 20 is stored can be used efficiently.

  Further, in the present embodiment, the slope unit 20 can be divided into a plurality of operations from a substantially horizontal storage state to a deployment state to the outside of the vehicle. Can be deployed.

  Furthermore, in this embodiment, the claw portion 36 is provided on the mounting surface 28 of the bracket 22, and the claw portion 32 is provided on the arm 24. Thereby, when the slope unit 20 is deployed outside the vehicle and when it is housed in a substantially horizontal state in the vehicle interior, the rotation range of the arm 24 can be restricted to a desired rotation angle. As a result, in the present embodiment, it is possible to avoid the slope unit 20 from coming into contact with the rear end of the vehicle body floor 18 when the slope unit 20 is deployed, and to move the arm 24 toward the front of the vehicle in a substantially horizontal storage. The deviation can be prevented.

  Next, inertial movement preventing means for preventing movement of the slope unit 20 housed in a substantially horizontal state in the passenger compartment due to inertial force when a load is input to the vehicle 16 will be described. Specifically, the weakened portion 48 of the hinge upper 26, the extended portion 46 of the arm 24, the separation portion 40 of the bracket 22, and the reinforcing batch 50 function directly or indirectly as an inertial movement preventing means. In the following description, the case of a rear impact load in which a load is input from the rear of the vehicle will be described as an example. However, the present invention is not limited to this. including.

  In the present embodiment, the end portion 22a on the development side (vehicle rear side) of the bracket 22 has a separation portion 40 that is separated from the upper surface of the vehicle body via a clearance 38 (see FIG. 2). In the present embodiment, by providing the separation portion 40, when the rear impact load is input, the deployment-side end portion 22a is prevented from interfering with the upper surface of the vehicle body, and the rear frame and the like are cross-sectioned at the vehicle front position of the bracket 22. There is no hindrance to folding down into an almost square shape. The bracket 22 and the arm 24 sink to the front side of the vehicle due to the lower folding of the rear frame or the like, so that the movement by the inertial force of the slope unit 20 can be avoided and the upward jumping of the slope unit 20 can be prevented. .

  In other words, when there is no separation portion 40, the unfolded end 22a interferes with the upper surface of the vehicle body and deforms at the rear portion of the vehicle body, so that it is difficult to fold the rear frame or the like downward at the vehicle front position of the bracket 22. . As a result, it is difficult for the bracket 22 and the arm 24 to sink to the front side of the vehicle, and the upward jumping of the slope unit 20 may occur.

  In the present embodiment, an extending portion 46 extending toward the back door 14 is provided at the vehicle rear end portion of the arm 24 (see FIG. 2). When the rear impact load F is input, the extension portion 46 is connected to the back door 14 by the arm 24 that rotates clockwise around the first pin member 34 before the slope unit 20 is displaced rearward by the inertial force. (Refer to FIG. 7A). When the extending portion 46 comes into contact with the back door 14, a force for rotating the extending portion 46 in the direction of the arrow L acts using the first pin member 34 as a rotation fulcrum, and the slope unit 20 is moved downward (arrow M). A force pressing toward the (direction) side acts (see FIG. 7A). As a result, in the present embodiment, the movement due to the inertial force of the slope unit 20 when the rear impact load F is input can be avoided, and the upward jumping of the slope unit 20 can be prevented.

  In other words, in this embodiment, the slope unit 20 and the bracket 22 are brought into contact with the back door 14 before the slope unit 20 contacts the bracket 22 and pivots upward. Can be prevented. As a result, in this embodiment, it is possible to suitably avoid the tip of the slope unit 20 from jumping upward.

  On the other hand, in the comparative example in which the extending portion 46 is not provided, as shown in FIG. 7B, when the rear impact load F is input, the arm 24 is rotated in the clockwise direction until the arm 24 comes into contact with the back door 14. Rotate (see arrow N). As the arm 24 rotates, the slope unit 20 comes into contact with the bracket 22, and a force is generated that slightly lifts the tip of the slope unit 20 upward. When the back door 14 comes into contact in this state, in the comparative example, the tip of the slope unit 20 jumps further upward (see arrow P in FIG. 7B), and may interfere with the seat back.

  In the present embodiment, the extending portion 46 extending toward the back door 14 is provided at the vehicle rear end of the arm 24. For example, the extending portion 46 is provided at the vehicle rear end of the slope unit 20. You may make it provide in the part side.

  In the present embodiment, the hinge upper 26 is provided with a fragile portion 48 that absorbs the load transmitted from the arm 24 when a rear impact load is input. When the extended portion 46 of the arm 24 comes into contact with the back door 14, the fragile portion 48 absorbs the load transmitted from the arm 24 side to the slope unit 20 side, thereby moving the slope unit 20 due to the inertial force. Is avoiding.

  In other words, in this embodiment, when the rear impact load is input, the slope unit 20 is moved by the inertial force by providing the fragile portion 48 that is refracted and fractured in the direction of movement by the inertial force in the intermediate portion of the hinge upper 26. Force can be absorbed suitably. Thereby, the movement by the inertial force of the slope unit 20 is avoided.

10 Slope unit system 14 Back door (tailgate)
20 Slope unit 20a-20c Slope (slope board)
22 Bracket (vehicle body side member)
22a End side on deployment side 24 Arm 26 Hinge upper 28 Mounting surface 32, 36 Claw portion (regulating means)
34 First pin member (first fulcrum)
40 Separating part 44 Second pin member (second fulcrum)
46 Extension part 48 Vulnerable part

Claims (4)

A slope unit system for a vehicle having a slope unit composed of one or more slope plates,
An arm that rotatably attaches the slope unit to the attachment surface of the vehicle body side member;
The arm includes a first fulcrum for pivotally supporting the slope unit and the arm with respect to a mounting surface of the vehicle body side member, and a second fulcrum for pivotally supporting the slope unit. And
An inertial movement preventing means for preventing movement by the inertial force of the slope unit housed in a substantially horizontal state in a passenger compartment when a load is input to the vehicle ;
An end portion on the deployment side of the vehicle body side member has a separation portion that is separated from the upper surface of the vehicle body via a clearance.
Slope unit system characterized by that. A slope unit system for a vehicle having a slope unit composed of one or more slope plates,
An arm that rotatably attaches the slope unit to the attachment surface of the vehicle body side member;
The arm includes a first fulcrum for pivotally supporting the slope unit and the arm with respect to a mounting surface of the vehicle body side member, and a second fulcrum for pivotally supporting the slope unit. And
An inertial movement preventing means for preventing movement by the inertial force of the slope unit housed in a substantially horizontal state in a passenger compartment when a load is input to the vehicle ;
The vehicle has a tailgate that opens and closes an opening for deploying the slope unit outside the vehicle,
At least the arm or the slope plate has an extending portion extending toward the tail gate side,
The extension part extends rearward from the rear end part of the slope unit stored in a substantially horizontal state in the vehicle interior.
Slope unit system characterized by that. A slope unit system for a vehicle having a slope unit composed of one or more slope plates,
An arm that rotatably attaches the slope unit to the attachment surface of the vehicle body side member;
The arm includes a first fulcrum for pivotally supporting the slope unit and the arm with respect to a mounting surface of the vehicle body side member, and a second fulcrum for pivotally supporting the slope unit. And
An inertial movement preventing means for preventing movement by the inertial force of the slope unit housed in a substantially horizontal state in a passenger compartment when a load is input to the vehicle ;
A hinge upper interposed between a portion on the end side of the slope unit adjacent to the second fulcrum and the arm;
The hinge upper has a fragile portion that absorbs a load transmitted from the arm when a load is input to the vehicle.
Slope unit system characterized by that. The slope unit system according to any one of claims 1 to 3 ,
A slope unit system comprising a restricting means for restricting a rotation range of the arm.

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