JP2009132279A - Camber angle adjusting mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a camber angle adjusting mechanism of simple structure reduced in a load to be applied to an actuator and securing strength. <P>SOLUTION: This camber angle adjusting mechanism 1 for changing a camber angle of a wheel 30 relative to a vehicle body includes a support member 22 connected to a vehicle body, a base member 20 provided in the support member 22, an actuator 2 provided in the support member 22 so as to generate rotary driving force, a bevel gear 3 having an actuator gear 3A to be rotated by the rotary driving force from the actuator 2 and wheel side transmission gears 3L and 3R to be engaged and rotated with the actuator gear 3A, a transmitting member 4 to be rotated by the wheel side transmission gears 3L and 3R of the bevel gear 3, a hypoid gear 5 formed of a ring gear 5 to be engaged with a pinion gear 4a provided in the transmitting member 4, and a turning member 6 turnably supporting the wheel 30 and for changing a camber angle of the wheel 30 by rotating relative to the base member 20 with rotation of the ring gear 5. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a camber angle adjusting mechanism that can change a camber angle of a wheel with a simple structure.

  Conventionally, as shown in FIG. 11, in order to be able to control camber and toe individually for each wheel by an actuator, a ball joint 533 that supports an axle 532 that supports the wheel at one point with respect to the vehicle body, First and second actuators that support two points in the longitudinal direction of the vehicle that are above or below the support point of the ball joint 533 in the axle 532 and that individually displace these two support points in the vehicle width direction. 534, 535 and the two support points are relatively displaced in the vehicle width direction to change the wheel toe and / or the two support points are displaced in the same direction in the vehicle width direction. And a control means for controlling the first and second actuators 534 and 535 so as to change the camber of the wheel (Patent Document 1). .

JP 2004-122932 A

  However, in the invention described in Patent Document 1, since the actuator is installed on the spring, when the camber angle is changed, it is necessary to require the actuator to perform an operation considering the relative movement between the vehicle body and the wheel. There was a heavy burden on the actuator.

  An object of the present invention is to solve the above-described problems, and to provide a camber angle adjusting mechanism that has a simple structure, reduces a load on an actuator, and ensures strength.

Therefore, the present invention provides a camber angle adjusting mechanism for changing a camber angle of a wheel with respect to a vehicle body, a support member connected to the vehicle body, a base member provided on the support member, and a rotation driving force provided on the support member. An bevel gear having an actuator gear that rotates by a rotational driving force of the actuator, a wheel-side transmission gear that meshes with and rotates with the actuator gear, a transmission member that rotates by the wheel-side transmission gear of the bevel gear, and A hypoid gear consisting of a ring gear meshing with a pinion gear provided on the transmission member, and a rotation that supports the wheel in a rotatable manner, and changes the camber angle of the wheel by rotating with respect to the base member by the rotation of the ring gear. And a member.
The wheel side transmission gear, the transmission member, the ring gear, and the rotating member are provided corresponding to the left and right wheels, respectively, and are operated by one actuator.

  According to the first aspect of the present invention, in the camber angle adjusting mechanism for changing the camber angle of the wheel with respect to the vehicle body, the support member connected to the vehicle body, the base member provided on the support member, and the support member are provided. A bevel gear having an actuator that generates a rotational driving force, an actuator gear that is rotated by the rotational driving force of the actuator, and a wheel-side transmission gear that meshes with the actuator gear and is rotated by the wheel-side transmission gear of the bevel gear. A member, a hypoid gear formed of a ring gear meshing with a pinion gear provided on the transmission member, and the wheel rotatably supported, and the camber angle of the wheel is adjusted by rotating with respect to the base member by the rotation of the ring gear. And a rotating member to be changed. It is possible to reduce the load on the over data, the actuator can be made compact and lightweight. In the vicinity where the camber angle adjusting mechanism is installed, the base member is supported by a support member having high rigidity, so that it is possible to ensure strength with light weight without using an extra member.

  According to a second aspect of the present invention, the wheel side transmission gear, the transmission member, the ring gear, and the rotating member are provided corresponding to the left and right wheels, respectively, and are operated by one actuator. The camber angle of the left and right wheels can be adjusted with one actuator.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view of the camber angle adjusting mechanism 1 of the first embodiment as viewed from the left side, FIG. 2 is an enlarged view of a bevel gear portion of the camber angle adjusting mechanism 1 of the first embodiment, and FIG. 3 is the first embodiment. The enlarged view of the wheel side part of the camber angle adjustment mechanism 1 of a form is shown.

  Note that front and rear correspond to the front and rear direction of the vehicle, and an arrow F in FIG. Further, the vehicle width direction is a direction orthogonal to the vehicle front-rear direction (the same applies hereinafter).

  1 to 3, 1 is a camber angle adjusting mechanism, 2 is an actuator, 3 is a bevel gear, 4 is a transmission member, 5 is a ring gear, 6 is a rotating member, 20 is a base member, 21 is a suspension, 22 is a torsion beam, Reference numeral 30 denotes a wheel.

  The camber angle adjusting mechanism 1 of the first embodiment is an apparatus for changing the camber angle of the wheel 30 provided at a portion connecting a vehicle body (not shown) and the wheel 30. Here, the wheel 30 includes a tire, a wheel, a hub 31 and the like.

  The camber angle adjusting mechanism 1 is provided on the base member 20 connected to the vehicle body or the support member, the torsion beam 22 and the like by a suspension 21 and a torsion beam 22 as a support member connected to the vehicle body, and generates a rotational driving force. The bevel gear 3 having the actuator 2, the actuator gear 3 </ b> A that rotates by the rotational driving force of the actuator 2, and the wheel-side transmission gears 3 </ b> L and 3 </ b> R that mesh with the actuator gear 3 </ b> A and the wheel-side transmission gears 3 </ b> L and 3 </ b> R A rotating transmission member 4, a hypoid gear 5 comprising a ring gear 5 meshed with a pinion gear 4 a provided on the transmission member 4, and a wheel 30 are rotatably supported, and the transmitted driving force of the actuator 2 is applied to the base member 20. The camber angle of the wheel 30 is changed by turning. And a rotating member 6. The bevel gear 3, the transmission member 4, the ring gear 5, the rotating member 6 and the base member 20 of the present embodiment are provided for the left and right wheels, respectively. The left wheel side will be described in particular, and the right wheel side will be described. Since the structure is similar, a detailed description is omitted and a brief description will be given.

  The actuator 2 supports the main body 2a by an actuator support portion 22b protruding from the main body 22a of the torsion beam 22, and rotates the actuator shaft 2b in the longitudinal direction of the vehicle body.

  As shown in FIG. 2, in the bevel gear 3, the actuator side gear 3A that rotates integrally with the actuator shaft 2b meshes with the left wheel side transmission gear 3L and the right wheel side transmission gear 3R, respectively, and transmits the power by changing the direction to the left and right wheels. To do.

  The transmission member 4 includes a left wheel side transmission member 4L and a right wheel side transmission member 4R. The left wheel side transmission member 4L is provided with a left wheel side transmission gear 3L at one end and a pinion gear 4La meshing with the ring gear 5 at the other end, and is integrated with the left wheel side transmission gear 3L by the rotation of the actuator side gear 3A. It will rotate. The right wheel side transmission member 4R has a similar structure.

  As shown in FIG. 3, the gear portion 5La of the ring gear 5L meshes with the pinion gear 4La to transmit power. Thereby, the ring gear 5L rotates. The shaft portion 5Lb of the ring gear 5L is connected to the shaft portion 6La of the rotating member 6L on the camber shaft CL.

  The base member 20L is fixed to the torsion beam 22 that swings with respect to the vehicle body, and supports the shaft portion 6La via a bearing or the like so that the rotating member 6L rotates about the camber shaft CL.

  The rotation member 6L rotatably supports the wheel 30L via the hub 31L and the like, and rotates with respect to the base member 20L about the camber shaft CL. In the present embodiment, the lower shaft portion 6La is connected so as to rotate with respect to the base member 20L around the camber shaft CL.

  Therefore, by the operation of the actuator 2, the wheel support portion 6 </ b> Lb of the rotation member 6 </ b> L rotates about the camber axis CL, and the camber angle of the wheel 30 can be adjusted.

The rotating member 6L preferably supports a brake or the like as a braking member that brakes the wheel 30L.
FIG. 4 shows a schematic operation diagram when the camber angle is changed. 4A shows a state where the actuator 2 is not operated, FIG. 4B shows a state where the actuator 2 is operated to be a negative camber, and FIG. 4C shows that the actuator 2 is operated. It shows the state of positive camber.

  In the present embodiment, the left and right wheels 30L and 30R are operated by the operation of one actuator 2, but the left wheel 30L side will be described in particular, and the right wheel 30R side has a different rotation direction but the same operation. Therefore, detailed explanation is omitted.

  As shown in FIG. 4A, in the state where the actuator 2 is not operated, the alignment initial setting state is set. In this embodiment, for example, the camber angle is set to 0 °.

  Next, as shown in FIG. 4B, the operation of operating the actuator 2 to make a negative camber will be described.

  As shown in FIG. 5, when the actuator 2 is operated and the actuator shaft 2b is rotated counterclockwise as seen from the rear of the vehicle as indicated by an arrow An, the actuator side gear 3A is also moved from the rear of the vehicle as shown in FIG. It rotates counterclockwise as shown by the arrow An. Then, as shown in FIG. 6, the left wheel side transmission gear 3L meshing with the actuator side gear 3A rotates in the direction of the arrow Ln1.

  The transmission member 4L provided with the left wheel side transmission gear 3L rotates in the direction of the arrow Ln1 shown in FIG. 5, and as shown in FIGS. 7 and 8, the pinion gear 4La provided in the transmission member 4L also rotates in the direction of the arrow Ln1. To do.

  As shown in FIG. 7, the ring gear 5L having the gear portion 5La that meshes with the pinion gear 4La rotates in the direction of the arrow Ln2. Since the ring gear 5L is connected to the shaft portion 6La of the rotating member 6L and the camber shaft CL via the shaft portion 5Lb, the rotating member 6L rotates around the camber shaft CL in the direction of the arrow Ln3. Move. Along with this, the camber angle of the wheel 30 is changed to become a negative camber.

  Next, as shown in FIG. 4C, the operation of operating the actuator 2 to make a positive camber will be described.

  As shown in FIG. 8, when the actuator 2 is operated and the actuator shaft 2b is rotated clockwise as seen from the rear of the vehicle as shown by the arrow Ap, the actuator side gear 3A is also seen from the rear of the vehicle as shown in FIG. And rotate counterclockwise as indicated by arrow Ap. Then, as shown in FIG. 9, the left wheel side transmission gear 3L meshing with the actuator side gear 3A rotates in the direction of the arrow Lp1.

  The transmission member 4L provided with the left wheel side transmission gear 3L rotates in the direction of the arrow Lp2 shown in FIG. 8, and the pinion gear 4La provided in the transmission member 4L also rotates in the direction of the arrow Lp2 as shown in FIGS. To do.

  As shown in FIG. 10, the ring gear 5L having the gear portion 5La that meshes with the pinion gear 4La rotates in the direction of the arrow Lp3. Since the ring gear 5L is connected to the shaft portion 6La of the rotating member 6L and the camber shaft CL via the shaft portion 5Lb, the rotating member 6L rotates around the camber shaft CL in the direction of the arrow Lp4. Move. Along with this, the camber angle of the wheel 30 is changed to become a positive camber.

  Thus, in the camber angle adjusting mechanism 1 that changes the camber angle of the wheel 30 with respect to the vehicle body, the support member 22 connected to the vehicle body, the base member 20 provided on the support member 22, and the support member 22 are provided for rotational driving. A bevel gear 3 having an actuator 2 that generates force, an actuator gear 3A that rotates by the rotational driving force of the actuator 2, and wheel-side transmission gears 3L and 3R that mesh with the actuator gear 3A and rotate, and a wheel-side transmission gear of the bevel gear 3 The transmission member 4 that is rotated by 3L and 3R, the hypoid gear 5 including the ring gear 5 that meshes with the pinion gear 4a provided on the transmission member 4, and the wheel 30 are rotatably supported. A rotating member 6 that changes the camber angle of the wheel 30 by rotating. In a simple structure, it is possible to reduce the load on the actuator 2, the actuator 2 can be made compact and lightweight. In the vicinity where the camber angle adjusting mechanism 1 is installed, the base member 30 is supported by the support member 22 having high rigidity. Therefore, the strength can be secured with light weight without using an extra member.

  Further, the wheel-side transmission gears 3L and 3R, the transmission member 4, the ring gear 5 and the rotating member 6 are provided corresponding to the left and right wheels 30L and 30R, respectively, and are operated by one actuator 2. Therefore, one actuator 2, the camber angles of the left and right wheels 30L and 30R can be adjusted.

It is the perspective view which looked at this embodiment from back upper direction. It is an enlarged view of the bevel gear of this embodiment. It is an enlarged view of the wheel side part of the camber angle adjustment mechanism of this embodiment. It is the operation | movement schematic when the camber angle of this embodiment is changed. It is the operation | movement schematic in the case of changing the camber angle of this embodiment to a negative camber. It is an enlarged view of the bevel gear in the case of FIG. It is an enlarged view of the wheel side part of the camber angle adjustment mechanism in the case of FIG. It is the operation | movement schematic in the case of changing the camber angle of this embodiment to a positive camber. It is an enlarged view of the bevel gear in the case of FIG. It is an enlarged view of the wheel side part of the camber angle adjustment mechanism in the case of FIG. It is a figure which shows the prior art.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Camber angle adjustment mechanism, 2 ... Actuator, 2a ... Main body, 2b ... Arm, 3 ... Bevel gear, 3A ... Actuator side gear, 3L ... Left wheel side transmission gear, 3R ... Right wheel side transmission gear, 4 ... Transmission member, 4a DESCRIPTION OF SYMBOLS ... Pinion gear, 5 ... Ring gear (hypoid gear), 5a ... Gear part, 5b ... Shaft part, 6 ... Turning member, 6a ... Shaft part, 6b ... Wheel support part, 20 ... Base member, 21 ... Suspension (support member), 22 ... Torsion beam (support member), 22a ... Main body, 22b ... Actuator support, 30 ... Wheel, 31 ... Hub (wheel support member), C ... Camber shaft

Claims (2)

In the camber angle adjustment mechanism that changes the camber angle of the wheel relative to the vehicle body,
A support member coupled to the vehicle body;
A base member provided on the support member;
A bevel gear provided on the support member and having an actuator that generates a rotational driving force, an actuator gear that rotates by the rotational driving force of the actuator, and a wheel-side transmission gear that meshes with and rotates with the actuator gear;
A transmission member that is rotated by a wheel-side transmission gear of the bevel gear;
A hypoid gear consisting of a ring gear meshing with a pinion gear provided on the transmission member;
A rotating member that rotatably supports the wheel and changes a camber angle of the wheel by rotating with respect to the base member by rotation of the ring gear;
A camber angle adjustment mechanism characterized by comprising:   2. The camber angle according to claim 1, wherein the wheel side transmission gear, the transmission member, the ring gear, and the rotating member are respectively provided corresponding to the left and right wheels and are operated by one actuator. Adjustment mechanism.

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