JP2007112185A - Toe angle and camber angle variable mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a toe angle and camber angle variable mechanism which enables a modification of the toe angle and camber angle by a simple structure. <P>SOLUTION: The toe angle and camber angle variable mechanism has a toe angle and camber angle variable means A which includes wheel support members 14, 26 which reletively rotatably supports a wheel 6 and rotatably supports one end around a rotary central axial line of the wheel 6 on the vehicle body side and supports the other end at the wheel support members 14, 26. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a mechanism that can easily change a toe angle and a camber angle of a vehicle.

Conventionally, in order to be able to control camber and toe individually for each wheel by an actuator, a ball joint 33 that supports an axle 32 that supports a wheel at one point with respect to the vehicle body, and a ball joint 33 in the axle 32 First and second actuators 34 and 35 for supporting two points in the vehicle front-rear direction, which are above and below the support point, and individually displacing the two support points in the vehicle width direction, and the two points The toe of the wheel is changed by relatively displacing the support point in the vehicle width direction, and / or the camber of the wheel is changed by displacing the two support points in the same direction in the vehicle width direction. In addition, there is a vehicle suspension device 31 including control means for controlling the first and second actuators 34 and 35 (Patent Document 1).
JP 2004-122932 A

  However, in the invention of Patent Document 1, the toe angle and the camber angle are changed using two actuators for one wheel, so the structure is complicated, the weight is increased, and high cost is required. It becomes.

  The present invention solves the above-described problems, and an object of the present invention is to provide a toe angle / camber angle variable mechanism that allows the toe angle and the camber angle to be changed with a simple structure.

  For this purpose, the present invention includes a wheel support member that supports the wheel so as to be relatively rotatable in a mechanism capable of changing the toe angle and the camber angle of the wheel, and rotates one end about the rotation center axis of the wheel toward the vehicle body side. A toe angle / camber angle variable portion that supports the other end and supports the other end on the wheel support member is provided.

  The toe angle / camber angle varying unit includes an actuator rotation arm that can rotate around the rotation center axis of the wheel, an actuator that supports one end on the actuator rotation arm, and supports the other end on a wheel support member. It is characterized by having.

  The toe angle / camber angle varying unit includes a two-link mechanism rotating shaft rotatable about the rotation center axis of the wheel, a support arm pivotally mounted about the two-link mechanism rotating shaft, The support arm has a first arm and a second arm that support the other end on the wheel support member at the end of the support arm, and a link mechanism operating motor disposed at the intersection of the two link mechanism rotating shaft and the support arm. The first arm, the second arm, and the wheel support member form a two-link mechanism, and the two-link mechanism can be operated by the link mechanism operating motor.

  Accordingly, the present invention provides a mechanism capable of changing the toe angle and the camber angle of the wheel, including a wheel support member that supports the wheel so as to be relatively rotatable, and has one end centered on the rotation center axis of the wheel on the vehicle body side. Since the toe angle / camber angle variable portion is provided which is rotatably supported and the other end is supported by the wheel support member, the toe angle and the camber angle can be changed with a simple structure.

  The toe angle / camber angle varying unit includes an actuator rotation arm that can rotate around the rotation center axis of the wheel, an actuator that supports one end on the actuator rotation arm, and supports the other end on a wheel support member. Therefore, it is possible to change both the toe angle and the camber angle by using one actuator.

  The toe angle / camber angle varying unit includes a two-link mechanism rotating shaft rotatable about the rotation center axis of the wheel, a support arm pivotally mounted about the two-link mechanism rotating shaft, The support arm has a first arm and a second arm that support the other end on the wheel support member at the end of the support arm, and a link mechanism operating motor disposed at the intersection of the two link mechanism rotating shaft and the support arm. The first arm, the second arm and the wheel support member form a two-link mechanism, and the two-link mechanism can be operated by the link mechanism operating motor, so that a toe angle and a camber can be used without using a hydraulic actuator. Both corners can be changed, making it more compact.

  Hereinafter, an embodiment as an example of the present invention will be described with reference to the drawings. FIG. 1 is a top view showing a toe angle / camber angle varying mechanism S of the first embodiment. In FIG. 1, S is a toe angle / camber angle variable mechanism, T is a wheel drive transmission portion, A is a toe angle / camber angle variable means, B is a bearing, 1 is a vehicle body, 2 is a drive means, 3 is a first axle, 4 is a second axle, 5 is a universal joint, 6 is a wheel, 7 is a tire, 11 is an actuator, 12 is an actuator rotating arm, 13 is a motor for an actuator rotating arm, and 14 is a wheel support member.

  The toe angle / camber angle varying mechanism S includes a wheel drive transmission unit T and a toe angle / camber angle varying means A, and a bearing B such as a ball bearing therebetween. The wheel drive transmission unit T includes a drive means 2, a first axle 3, a second axle 4, a universal joint 5, a wheel 6, and a tire 7, and the axles 3, 4 and the universal joint 5 are connected from the drive means 2 of the vehicle body 1. It is a mechanism that transmits the rotation to the wheel 6 and the tire 7 via the wheel. The axles 3 and 4 are divided into a first axle 3 on the vehicle body side and a second axle 4 on the wheel side, and are connected by a universal joint 5. The wheel 6 is connected to the second axle 4, and a tire 7 is installed on the outer periphery of the wheel 6.

  The toe angle / camber angle changing means A includes an actuator 11, an actuator rotating arm 12, an actuator rotating arm motor 13, and a wheel support member 14. By operating the actuator 11 with a power means such as a battery (not shown), the tire 7 This is the part that changes the toe angle and camber angle.

  The actuator 11 is an expandable member that has one end coupled to the actuator rotating arm 12 and the other end coupled to the wheel support member 14. The actuator rotation arm 12 is a member that is supported at the one end side so as to be rotatable with respect to the first axle 3 by an actuator rotation arm motor 13 disposed on the outer periphery of the first axle 3, and the actuator 11 is coupled to the other end side. . The wheel support member 14 is rotatable relative to the wheel 6 and is coupled to the actuator 11.

  Subsequently, the operation of the first embodiment will be described. FIG. 2 is a block diagram of the toe angle / camber angle varying unit A. I is an input means, C is a control means, A is a toe angle / camber angle variable portion, and K is a detection means. First, by operating the input means I, a signal is input to the control means C, a signal corresponding to the operation amount of the input means I is output from the control means C, and the toe angle / camber angle variable means A is controlled. The amount of displacement of the actuator 11, the rotation angle of the actuator rotary arm 12, the rotation angular velocity, and the like, which are the control amounts, are detected by the detection means K, and the detection value is output to the control means C. The control means C controls the toe angle / camber angle varying means A by comparing the input signal of the input means I with the detection value of the detection means K.

  When the actuator 11 is arranged at a position as shown in the top view of FIG. 3, the toe angle can be changed by the expansion and contraction of the actuator 11. When the actuator rotating arm motor 13 is operated from this position, the actuator rotating arm 12, the actuator 11 and the wheel support member 14 rotate around the axles 3 and 4. Then, when the actuator 11 is arranged at a position rotated by 90 degrees as shown in the front view of FIG. 4 and the actuator 11 is expanded and contracted, the camber angle can be changed. When the actuator 11 is disposed between the positions shown in FIGS. 3 and 4, both the toe angle and the camber angle can be changed.

  Thus, both the toe angle and the camber angle can be changed with a structure using one actuator.

  Next, a second embodiment will be described. FIG. 5 shows a toe angle / camber angle variable mechanism S of a two-link type. In FIG. 5, S is a toe angle / camber angle varying mechanism, A is a toe angle / camber angle varying unit, 1 is a vehicle body, 7 is a tire, 21 is a 2-link mechanism rotating motor, 22 is a 2-link mechanism rotating shaft, and 23 is A support arm, 24 is a first arm, 25 is a second arm, 26 is a wheel support member, and 27 is a link mechanism operating motor.

  The toe angle / camber angle variable section A includes a two-link mechanism rotation motor 21, a link mechanism rotation shaft 22, a support arm 23, a first arm 24, a second arm 25, a wheel support member 26, and a link mechanism operation motor 27. In addition, the toe angle / camber angle of the tire 7 is changed by operating the two-link mechanism rotating motor 21 or the link mechanism operating motor 27 with power means such as a battery (not shown).

  The two-link mechanism rotation motor 21 is installed in the vehicle body 1 and obtains power from the power means 20, and the two-link mechanism rotation shaft 22, support arm 23, first arm 24, second arm 25, wheel support member 26, link The mechanism operating motor 27 is rotated about the two-link mechanism rotating shaft 22.

  The two-link mechanism rotating shaft 22 has one end connected to the output shaft of the two-link mechanism rotating motor 21 and the other end pivotally attached to the center of the support arm 23. The support arm 23, the first arm 24, the second arm 25, and the wheel support member 26 form a square link and are operated by a link mechanism operating motor 27 disposed at the intersection of the two link mechanism rotating shaft 22 and the support arm 23. The

  Subsequently, the operation of the second embodiment will be described. The operation is executed as shown in the block diagram of the toe angle / camber angle varying unit A in FIG. 2 as in the first embodiment. First, by operating the input means I, a signal is input to the control means C, a signal corresponding to the operation amount of the input means I is output from the control means C, and the toe angle / camber angle variable means A is controlled. The control means detects the rotation angle, the rotation angular velocity, and the like of the two-link mechanism rotation motor 21 and the link operation motor 27, which are the control amounts, and outputs the detection value to the control means C. The control means C controls the toe angle / camber angle varying means A by comparing the input signal of the input means I with the detection value of the detection means K.

  FIG. 6 shows the toe angle / camber angle varying mechanism S when changing the toe angle. 6A is a top view and FIG. 6B is a side view. When the two-link mechanism rotation motor 21 is operated, the toe angle / camber angle variable portion A is rotated around the two-link mechanism rotation shaft 22 in the state shown in FIG. The toe angle can be changed.

  FIG. 7 shows the toe angle / camber angle varying mechanism S when the camber angle is changed. FIG. 7A is a top view and FIG. 7B is a side view. The two link mechanism rotating motor 21 is operated from the state of FIG. 6, the toe angle / camber angle variable portion A is rotated about 90 degrees as shown in FIG. 7 about the two link mechanism rotating shaft 22, and the link operating motor 27 is operated. As a result, the camber angle of the tire 7 can be changed.

  When the toe angle / camber angle varying portion A is rotated between the positions shown in FIGS. 6 and 7, both the toe angle and the camber angle can be changed. In this way, both the toe angle and the camber angle can be changed without using a hydraulic actuator, resulting in compactness.

  In this embodiment, the axle power transmission type vehicle is described. However, the toe angle / camber angle varying mechanism S of the present embodiment may be used for an in-wheel motor type vehicle.

  In addition, the toe angle / camber angle varying mechanism S of the present embodiment can be used not only when setting the wheel alignment but also as a travel control device during vehicle travel and a steering device during turning. In that case, a steering device such as a vehicle running state detecting unit or a steering is applied as the input unit I of the present embodiment, and the toe angle / camber angle variable mechanism S is operated in conjunction with the running state detecting unit or the steering device. Control is performed by the control means C.

The figure which shows 1st embodiment of this invention Block diagram of the first embodiment of the present invention The figure which shows the operation state of 1st embodiment of this invention. The figure which shows the operation state of 1st embodiment of this invention. The figure which shows 2nd embodiment of this invention The figure which shows the operation state of 2nd embodiment of this invention. The figure which shows the operation state of 2nd embodiment of this invention. Diagram showing conventional technology

Explanation of symbols

  S ... Toe angle / camber angle variable mechanism, T ... Wheel drive transmission unit, A ... Toe angle / camber angle variable means, B ... Bearing, 1 ... Car body, 2 ... Drive means, 3 ... First axle, 4 ... Second Axle, 5 ... Universal joint, 6 ... Wheel, 7 ... Tire, 11 ... Actuator, 12 ... Actuator rotary arm, 13 ... Motor for actuator rotary arm, 14 ... Wheel support member, 21 ... Two link mechanism rotary motor, 22 ... 2 Link mechanism rotating shaft, 23 ... support arm, 24 ... first arm, 25 ... second arm, 26 ... wheel support member, 27 ... link mechanism operating motor

Claims (3)

A mechanism capable of changing a toe angle and a camber angle of a wheel, including a wheel support member that supports the wheel so as to be relatively rotatable, and supports one end on a vehicle body side so as to be rotatable around a rotation center axis of the wheel. A toe angle / camber angle varying mechanism comprising a toe angle / camber angle varying portion for supporting an end on the wheel support member. The toe angle / camber angle variable unit includes an actuator rotation arm that can rotate around the rotation center axis of the wheel, and an actuator that supports one end on the actuator rotation arm and the other end on a wheel support member. The toe angle / camber angle varying mechanism according to claim 1. The toe angle / camber angle varying unit includes a two-link mechanism rotating shaft that is rotatable about the rotation center axis of the wheel, a support arm pivotally mounted about the two-link mechanism rotating shaft, and one end of the support arm. A first arm and a second arm for supporting the other end on the wheel support member at an end, and a link mechanism operating motor disposed at an intersection of the two link mechanism rotating shaft and the support arm, the support arm, 2. The toe angle of claim 1, wherein the first arm, the second arm, and the wheel support member form a two-link mechanism, and the two-link mechanism is operable by the link mechanism operating motor. Camber angle variable mechanism.

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