JP2010030577A - Camber angle variable mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a camber angle variable mechanism reducing loads on a motor with a simple structure. <P>SOLUTION: This camber angle variable mechanism 1 varying a camber angle of a wheel 30 relative to a vehicle body includes a base member 20, the motor 2, a worm wheel 3, a transmitting member 4, and a movable member 5. The contact point 3e of the worm wheel 3 includes a first terminal 3e<SB>1</SB>, a second terminal 3e<SB>2</SB>, and a third terminal 3e<SB>3</SB>. The first terminal 3e<SB>1</SB>is arranged at a position contacted with a second current-carrying part 3f<SB>2</SB>, a first insulated part 3g<SB>1</SB>, and a third current-carrying part 3f<SB>3</SB>one by one respectively when the worm wheel 3 is rotated. The second terminal 3e<SB>2</SB>is arranged at a position always contacted with a first current-carrying part 3f<SB>1</SB>when the worm wheel 3 is rotated. The third terminal 3e<SB>3</SB>is arranged at a position contacted with a second insulated part 3g<SB>2</SB>, the first current-carrying part 3f<SB>1</SB>, and a third insulated part 3g<SB>1</SB>one by one respectively when the worm wheel 3 is rotated. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

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

  Conventionally, as shown in FIG. 20, in order to be able to control cambers and tows 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 general, in a mechanism using an actuator, in order to maintain a predetermined camber angle, power is always required, which is inefficient and sometimes deteriorates fuel consumption. If a stop mechanism for stopping the movement of the actuator at a predetermined position is provided, a separate space is required and the weight is increased.

  An object of the present invention is to solve the above problems, and to provide a camber angle variable mechanism that has a simple structure, reduces a load on a motor, and is strong against an external force.

  Therefore, the present invention provides a camber angle variable mechanism for changing a camber angle of a wheel with respect to a vehicle body, a base member connected to the vehicle body side, a motor provided on the base member and generating a rotational driving force, and a worm wheel shaft. A worm wheel that transmits the driving force of the motor, a transmission member that is eccentric with respect to the worm wheel shaft and is connected to the worm wheel via a first connecting portion, and the wheel that rotates. The camber angle of the wheel is changed by rotating with respect to the base member by the driving force of the motor transmitted from the transmission member and supported by the transmission member via a second coupling portion. The worm wheel has a current-carrying part, an insulating part, and a contact point, and the current-carrying part has a first current-carrying part, A second energization part and a third energization part, wherein the insulating part includes a first insulation part formed around a worm wheel shaft on the inner peripheral side of the first energization part, and the first energization part. A second insulating part formed on the outer peripheral side; and a third insulating part formed on the outer peripheral side of the first current-carrying part, wherein the contact point includes a first terminal, a second terminal, 3 terminals, and the first terminal is provided at a position where the second energizing part, the first insulating part, and the third energizing part sequentially contact each other when the worm wheel rotates, When the worm wheel rotates, the second terminal is always provided at a position where the second terminal abuts on the first energization unit, and when the worm wheel rotates, the second terminal includes the second insulating unit, It is provided at a position where the first energizing part and the third insulating part are in contact with each other in order. The features.

  The worm wheel has a first state in which the first terminal is in contact with the second current-carrying part, the second terminal is in contact with the first current-carrying part, and the first terminal is in the third current-carrying part. A second state in which the second terminal is in contact with the first energization part, a third state in which the second terminal and the third terminal are in contact with the first energization part, and the motor is driven. It is characterized by switching between the state and the state.

  According to the first aspect of the present invention, in the camber angle variable mechanism for changing the camber angle of the wheel with respect to the vehicle body, a base member connected to the vehicle body side, a motor provided on the base member and generating a rotational driving force, A worm wheel that rotates about a worm wheel shaft and transmits a driving force of the motor; a transmission member that is eccentric with respect to the worm wheel shaft and coupled to the worm wheel via a first coupling portion; The wheel is rotatably supported, connected to the transmission member via a second connecting portion, and rotated with respect to the base member by the driving force of the motor transmitted from the transmission member. A movable member that changes a camber angle, wherein the worm wheel has a current-carrying portion, an insulating portion, and a contact point. A first energizing part formed around the worm wheel shaft on the inner peripheral side of the first energizing part, and the first energizing part, a second energizing part, and a third energizing part. A second insulating portion formed on the outer peripheral side of the first energizing portion; and a third insulating portion formed on the outer peripheral side of the first energizing portion, wherein the contact point includes a first terminal, A terminal and a third terminal, wherein the first terminal is in contact with the second energization part, the first insulating part, and the third energization part in order when the worm wheel rotates. The second terminal is provided at a position that always contacts the first energization portion when the worm wheel rotates, and the third terminal is provided when the worm wheel rotates. Provided in a position to contact the insulating part, the first energizing part and the third insulating part in order. Since the number of parts is also reduced with a simple structure, it can be a low cost light weight. In addition, the load on the motor can be reduced with a simple structure. Further, the stop position of the worm can be controlled only by turning the switch on and off, and a mechanism capable of controlling the camber angle of the vehicle with high accuracy without requiring a highly accurate actuator and actuator control device can be realized.

  According to a second aspect of the present invention, the worm wheel has a first state in which the first terminal is in contact with the second energization part and the second terminal is in contact with the first energization part; A second state in which the first terminal is in contact with the third energization part and the second terminal is in contact with the first energization part; and the second terminal and the third terminal are in contact with the first energization part. Therefore, the load on the motor can be reduced with a simple structure. In addition, in the first state and the second state, since the component of the external force with respect to the rotation direction of the first connecting portion is not generated, the locked state is the same as the locked state, so that the external force is strong. . That is, since the transmission member is eccentrically connected to the worm wheel, the centers of the first connecting portion, the second connecting portion, and the worm wheel are arranged in a straight line, so that a force around the rotation axis of the camber angle of the wheel is applied. Since there is no force applied in the direction of rotation of the worm wheel, there is a self-locking effect.

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

  FIG. 1 is a perspective view of the camber angle varying mechanism 1 according to the first embodiment as seen from the front upper side, and FIG. 2 is a diagram of the camber angle varying mechanism 1 according to the first embodiment as seen from the rear. However, in FIG. 2, struts and knuckles are omitted in order to make the camber angle variable mechanism 1 easy to see.

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

  1 and 2, 1 is a camber angle variable mechanism, 2 is a motor, 3 is a worm wheel, 4 is an arm as a transmission member, 5 is a movable plate as a movable member, 6 is a rubber bush as a buffer member, 20 Is a knuckle as a base member, 21 is a strut, 22 is a lower arm, 30 is a wheel, and 40 is a drive shaft.

  The camber angle changing mechanism 1 of the first embodiment is a device for changing the camber angle of the wheel 30 provided at a portion connecting a vehicle body (not shown) and the wheel 30.

  The camber angle variable mechanism 1 includes a knuckle 20 connected to a support member such as a vehicle body or a strut 21 and a lower arm 22, a motor 2 that generates a driving force, a worm wheel 3 and an arm 4 that transmit the driving force of the motor 2. The movable plate 5 is movable with respect to the knuckle 20 by the driving force of the motor 2 transmitted from the worm wheel 3 and the arm 4.

  The knuckle 20 is fixed to a strut 21 that swings with respect to the vehicle body, and is rotatably supported by a lower arm 22. The knuckle 20 has a gear case 20 a as a support portion for supporting the motor 2 and the worm wheel 3, and is connected to the movable plate 5 via a rubber bush 6.

  The motor 2 is a DC motor, the motor body 2 a is supported by a knuckle gear case 20 a, and the worm shaft 2 b as an output shaft is engaged with the worm wheel 3. In the worm wheel 3, the wheel portion 3 a is coupled to the worm shaft 2 b of the motor 2 and transmits the power of the motor 2 to the arm 4, and the worm wheel shaft 3 b is supported by the gear case 20 a of the knuckle 20. Details of the motor 2 and the worm wheel 3 will be described later.

  The arm 4 is decentered at a position shifted from the rotational axis of the worm wheel 3 on the one hand, and is connected to the worm wheel 3 via the first connecting portion 34, and is connected to the movable plate 5 via the second connecting portion 45 on the other hand. Then, the driving force of the motor 2 is transmitted to the movable plate 5. The first connecting portion 34 is preferably connected by a metal bush, and the second connecting portion 45 is preferably connected by a ball joint. By configuring in this way, it is possible to absorb the deviation other than the axial direction of the movable plate 5 which occurs due to the camber shaft being supported by the rubber bush 6 or the like by the ball joint or the like.

  The movable plate 5 rotatably supports the wheel 30 via the hub 31 and the like, and when the motor 2 is operated, power is transmitted by the worm wheel 3 and the arm 4 and rotates with respect to the knuckle 20.

  FIG. 3 is a view showing a connecting portion between the movable plate 5 and the knuckle 20. The rubber bush 6 is composed of three layers of an inner bush 6a and an outer bush 6b, and an intermediate bush 6b that is sandwiched between the inner bush 6a and the outer bush 6b and is softer than the inner bush 6a and the outer bush 6b. And the movable plate 5. The knuckle 20 is provided with a camber shaft C, and the rubber bush 6 is attached around the camber shaft C. The movable plate 5 is attached around the rubber bush 6. When the movable plate 5 is operated by the power of the motor 2, the movable plate 5 rotates with respect to the knuckle 20, and the camber angle can be changed.

  FIG. 4 is a diagram showing the motor 2 and the worm wheel 3. The motor 2 rotates the worm shaft 2b by fixing the ferrite magnet 2c to the main body 2a and passing electricity intermittently from the brush 2e to the armature 2d provided on the worm shaft 2b. The worm wheel 3 has a cam plate 3c for electrical connection provided with a notch 3d approximately 180 degrees apart.

  The cam plate 3c forms an electric circuit up to a fixed position even when the power is cut off, and continues to rotate. When the notch 3d reaches the position of the contact point 3e, the motor 2 is in a short-circuited state, and dynamic braking is performed. In addition, the worm wheel 3, the arm 4 and the movable plate 5 can be stopped at predetermined positions. In the present embodiment, a case where the camber angle is changed and a case where the camber angle is not changed are set corresponding to the notch 3d separated by about 180 degrees.

  FIG. 5 is an operation schematic diagram seen from the rear of the vehicle body when the camber angle is changed.

  As shown in FIG. 5, when the motor 2 is operated, the worm wheel 3 rotates, and one of the arms 4 provided eccentric to the worm wheel 3 rotates. Then, the movable member 4 pulled by the arm 4 and connected to the other of the arms 4 rotates with respect to the knuckle 20 while bending the rubber bush 6, and gives a camber angle to the wheel 30.

  FIG. 6 is an enlarged view and a schematic view of the camber angle varying mechanism 1 in a state where the camber angle is not changed. FIG. 6A is an enlarged view, and FIG. 6B is a schematic diagram.

  As shown in FIG. 6, when the camber angle is not changed, from the wheel 30 side, the movable plate 5 and the second connecting portion 45 of the arm 4, the arm 4 and the first connecting portion 34 of the worm wheel 3, and the worm wheel shaft 3b. Are arranged in a first state on a straight line A.

  FIG. 7 is an enlarged view and a schematic view of the camber angle varying mechanism 1 in a state where the camber angle is changed. FIG. 7A is an enlarged view, and FIG. 7B is a schematic diagram.

  Further, as shown in FIG. 7, in the state where the camber angle is changed, the second connection portion 45 between the movable plate 5 and the arm 4, the worm wheel shaft 3 b, and the first connection between the arm 4 and the worm wheel 3 from the wheel 30 side. The portion 34 is configured to be in the second state in which the portions 34 are aligned on the straight line B.

  Further, when the camber angle varying mechanism 1 is in the first state and the second state, the tangent line in the first connecting portion 34 with respect to the trajectory of the first connecting portion 34 is perpendicular to the straight line A and the straight line B. If there is no power of 2, the component of the tangential force for rotating the arm 4 is not generated, and the camber angle varying mechanism 1 is locked.

  In this embodiment, the camber angle is not changed in the first state, and the camber angle is changed in the second state. However, the camber angle is changed in the first state. In the second state, the camber angle may not be changed in the changed state.

  FIG. 8 is a perspective view of the camber angle variable mechanism 1 according to the second embodiment as viewed from the front upper side, FIG. 9 is a diagram of the camber angle variable mechanism 1 according to the second embodiment as viewed from the side, and FIG. 10 is the second embodiment. The figure seen from the back of the camber angle variable mechanism 1 is shown. However, in FIG. 10, struts and knuckles are omitted in order to make the camber angle variable mechanism 1 easy to see.

  8-10, 1 is a camber angle variable mechanism, 2 is a motor, 3 is a worm wheel, 4 is an arm as a transmission member, 5 is a movable plate as a movable member, 6 is a rubber bush as a buffer member, 20 Is a knuckle as a base member, 21 is a strut, 22 is a lower arm, 30 is a wheel, and 40 is a drive shaft.

  The camber angle varying mechanism 1 of the second embodiment is a device for changing the camber angle of the wheel 30 provided at a portion connecting a vehicle body (not shown) and the wheel 30.

  The camber angle variable mechanism 1 includes a knuckle 20 connected to a support member such as a vehicle body or a strut 21 and a lower arm 22, a motor 2 that generates a driving force, a worm wheel 3 and an arm 4 that transmit the driving force of the motor 2. The movable plate 5 is movable with respect to the knuckle 20 by the driving force of the motor 2 transmitted from the worm wheel 3 and the arm 4.

  The knuckle 20 is fixed to a strut 21 that swings with respect to the vehicle body, and is rotatably supported by a lower arm 22. The knuckle 20 has a gear case 20 a that supports the motor 2 and the worm wheel 3, and is connected to the movable plate 5 by a connecting member 7 so as to be rotatable about a camber shaft C.

  The motor 2 is a DC motor, the motor body 2 a is supported by a knuckle gear case 20 a, and the worm shaft 2 b as an output shaft is engaged with the worm wheel 3. In the worm wheel 3, the wheel portion 3 a is coupled to the worm shaft 2 b of the motor 2 and transmits the power of the motor 2 to the arm 4, and the worm wheel shaft 3 b is supported by the gear case 20 a of the knuckle 20. Details of the motor 2 and the worm wheel 3 will be described later.

  The arm 4 is decentered at a position shifted from the rotational axis of the worm wheel 3 on the one hand, and is connected to the worm wheel 3 via the first connecting portion 34, and is connected to the movable plate 5 via the second connecting portion 45 on the other hand. Then, the driving force of the motor 2 is transmitted to the movable plate 5. The first connecting portion 34 is preferably connected by a metal bush, and the second connecting portion 45 is preferably connected by a ball joint. By configuring in this way, it is possible to absorb the deviation other than the axial direction of the movable plate 5 which occurs due to the camber shaft being supported by the rubber bush 6 or the like by the ball joint or the like.

  The movable plate 5 rotatably supports the wheel 30 via the hub 31 and the like, and when the motor 2 is operated, power is transmitted by the worm wheel 3 and the arm 4 and rotates with respect to the knuckle 20.

  Further, as shown in FIG. 9, the movement trajectory of the cross-sectional center O <b> 1 of the arm 4 and / or the axis D <b> 1 of the strut 21 is perpendicular to the line on the camber axis C passing through the two connection points 57 of the knuckle 20 and the movable plate 5. It is arranged to overlap a line, preferably a plane bisector D2 of two connecting points 57 and a plane D passing through the center of rotation O2 of the wheel 30.

  By arranging in this way, the arm 4 that transmits the driving force of the motor is perpendicular to the line on the camber axis C passing through the two connection points 57 of the knuckle 20 and the movable plate 5, preferably two connection points 57. The movable plate 5 is pushed in the plane D passing through the vertical bisector D2 and the rotation center O2 of the wheel 30, and when the force is transmitted, it can be efficiently transmitted without causing twist. it can.

  FIG. 11 is an operation schematic diagram viewed from the rear of the vehicle body when the camber angle is changed.

  As shown in FIG. 11, when the motor 2 is operated, the worm wheel 3 rotates, and one of the arms 4 provided eccentric to the worm wheel 3 rotates. Then, the movable member 4 pulled by the arm 4 and connected to the other of the arms 4 rotates with respect to the knuckle 20 about the camber shaft C, and gives a camber angle to the wheel 30.

Next, the worm wheel 3 used in the first embodiment and the second embodiment will be described. FIG. 12 is a view showing the worm wheel 3. In the figure, 3 is a worm wheel, 3a wheel portion, 3b is a worm wheel shaft, 3c cam plate, 3d cutout, 3d ₁ lacks the first cut, 3d ₂ lacks second cut, 3e a contact point, E is the first terminal, S is a second terminal, B is a third terminal, 3f are conducting portion, 3f ₁ the first conducting portion, 3f ₂ second conducting portion, 3f ₃ the third conducting portion, 3g denotes an insulating 3g ₁ is a first insulating part, 3g ₂ is a second insulating part, and 3g ₃ is a third insulating part.

  The worm wheel 3 includes a wheel portion 3a, a worm wheel shaft 3b inserted through the wheel portion 3a, and a cam plate 3c provided on the wheel portion 3a.

  The cam plate 3c includes a contact point 3e, an energizing portion 3f, and an insulating portion 3g that covers the energizing portion 3f.

The energizing portion 3f includes a first energizing portion 3f ₁ , a second energizing portion 3f ₂ formed by the first notch 3d ₁ provided in the first insulating portion 3g ₁ , and a first energizing portion provided in the first insulating portion 3g ₁ . And a third energization portion 3f ₃ formed by _two notches 3d ₂ .

The insulating portion 3g has a second formed on the first and the insulating portion 3g _1, the outer peripheral side of the first conducting portion 3f ₂ formed on the worm wheel shaft 3b around the first inner peripheral side of the conducting portion 3f ₁ It has an insulating part 3g ₂ and a third insulating part 3g ₃ formed on the outer peripheral side of the first energizing part 3f ₃ .

The contact point 3 e has a first terminal E, a second terminal S, and a third terminal B. When the worm wheel rotates, the first terminal 3e ₁ is provided at a position that sequentially contacts the second energization part, the first insulating part, and the third energization part, and the second terminal 3e ₂ When the worm wheel rotates, it is always provided at a position where it abuts against the first energization portion 3f ₁ , and the third terminal 3e ₃ is provided with the second insulating portion and the first energization when the worm wheel rotates. And the third insulating portion in order to contact each other.

  FIG. 13 is a diagram illustrating a circuit of the worm wheel 3. P is a power supply, Q is a switch, R is a resistor, and M is a motor.

  Next, the operating state of the worm wheel 3 will be described. 12-17 is a figure which shows the operating state or circuit of the worm wheel 3. FIG.

FIG. 12 is a diagram showing a state of the worm wheel 3 when the camber angle is not changing, and FIG. 13 is a circuit diagram of the worm wheel 3 when the camber angle is not changing. In this state, as shown in FIG. 12, the first notch 3d ₁ is at the position of the contact point 3e, the first terminal E is in contact with the second energizing portion 3f ₂ , and the second terminal S is the first energizing portion. The third terminal B comes into contact with 3f ₁ and comes into contact with the second insulating portion 3g ₂ (first state). However, since the current from the power source P does not enter the motor M as shown in FIG. 13, the motor M is not driven.

  Therefore, the worm wheel 3, the arm 4 and the movable plate 5 do not operate as shown in FIG.

  FIG. 14 is a circuit diagram in which the switch Q is closed. From this state, as shown in FIG. 14, when the switch Q is closed, the current from the power source P enters the motor M, and the motor M is driven.

FIG. 15 is a diagram showing a state where the worm wheel 3 is rotating, and FIG. 16 is a circuit diagram when the worm wheel 3 is rotating. As shown in FIG. 15, the first terminal E abuts on the first insulating portion 3g ₁ , and the second terminal S and the third terminal B abut on the first energization portion 3f ₁ (third state). Then, as shown in FIG. 16, the 2nd terminal S and the 3rd terminal B are connected. Here, the switch Q is opened. However, since the second terminal S and the third terminal B remain connected, the motor M continues to be driven and the worm wheel 3 continues to rotate.

FIG. 17 is a diagram illustrating a state of the worm wheel 3 when the camber angle is changed. In this state, as shown in FIG. 17, the second notch 3d ₂ comes to the position of the contact point 3e, the first terminal E abuts on the second energization portion 3f ₂ , and the second terminal S is the first energization. in contact with the part 3f _1, the third terminal B in contact with the second insulating portion 3 g ₂ (second state). Then, as in FIG. 13, since the current from the power source P does not enter the motor M, the motor M is short-circuited and is not driven, and the worm wheel 3 stops rotating.

  Accordingly, power braking is applied, and the worm wheel 3, the arm 4 and the movable plate 5 can be stopped at predetermined positions as shown in FIG. In the present embodiment, a case where the camber angle is changed and a case where the camber angle is not changed are set corresponding to the notch 3d separated by about 180 degrees.

FIG. 18 is a diagram illustrating a worm wheel 3 according to another embodiment. In another embodiment, the second notch 3d ₂ , the third energization part 3f ₃ , and the third notch 3d ₁ , the second energization part 3f ₂ , and the second insulation part 3g ₂ , respectively. The position of the insulating portion 3g ₃ is not approximately 180 degrees but is changed.

  In this way, by setting the first angle θ1 and the second angle θ2, when it is desired to change the camber quickly, the first angle θ1 smaller than 180 degrees is used and when the camber change is to be delayed. The second angle θ2 larger than 180 degrees may be used.

  FIG. 19 is a schematic diagram showing the relationship between the worm wheel 3, the arm 4, and the movable plate 5 of another embodiment. In the camber angle variable mechanism 1 according to the present invention, the crank mechanism is applied to the worm wheel 3, the arm 4, and the movable plate 5.

  As shown in FIG. 19, in a state where the camber angle is not changed, from the wheel 30 side, the movable plate 5 and the second connecting portion 45 of the arm 4, the arm 4 and the first connecting portion 34 of the worm wheel 3, and the worm wheel shaft 3b. Are arranged in a first state on a straight line A.

  Further, as shown in FIG. 19, when the camber angle is changed, from the wheel 30 side, the second connection portion 45 of the movable plate 5 and the arm 4, the worm wheel shaft 3 b, and the first connection of the arm 4 and the worm wheel 3. The portion 34 is configured to be in the second state in which the portions 34 are aligned on the straight line B.

  When moving from the first state to the second state, or when moving from the second state to the first state, the first angle θ1 can be used to move quickly.

Thus, in the camber angle variable mechanism 1 that changes the camber angle of the wheel 30 with respect to the vehicle body, the knuckle 20 connected to the vehicle body side, the motor 2 that is provided on the knuckle 20 and generates a rotational driving force, and the gear rotation shaft C The worm wheel 3 that rotates about the worm wheel 3 and transmits the driving force of the motor 2 and the arm 4 that is eccentric to the gear rotation axis C of the worm wheel 3 and is connected to the worm wheel 3 via the first connecting portion 34. The wheel 30 is rotatably supported, is connected to the arm 4 via the second connecting portion 45, and is rotated with respect to the knuckle 20 by the driving force of the motor 2 transmitted from the arm 4. A movable plate 5 that changes the camber angle. The worm wheel 3 includes a current-carrying part 3f, an insulating part 3g, and a contact point 3e. A conductive portion 3f _1, the second conducting portion 3f _2, and the third conducting portion 3f _3, have, insulating portion 3g is formed around the worm wheel shaft 3b of the first inner peripheral side of the conducting portion 3f ₁ and a first insulating portion 3 g _1, and the second insulating portion 3 g ₂ formed on the first outer peripheral side of the conducting portion 3f _1, and the third insulating portion 3 g ₃ formed on the first outer peripheral side of the conducting portion 3f ₁ has a contact point 3e has a first terminal 3e _1, a second terminal 3e _2, the third terminal 3e ₃ has a first terminal 3e _1, when the worm wheel 3 rotates The second energizing portion 3f ₂ , the first insulating portion 3g _1, and the third energizing portion 3f ₃ are respectively provided in contact with each other in order, and the second terminal 3e ₂ is always first when the worm wheel 3 rotates. The third terminal 3e ₃ is provided at a position in contact with the energizing portion 3f ₁ , and the third terminal 3e ₃ is provided with the second insulating portion 3g ₂ when the worm wheel 3 rotates. Since the first current-carrying part 3f ₁ and the third insulating part 3g ₁ are provided in contact with the first current-carrying part 3f ₁ and the third insulating part 3g ₁ in order, the number of parts is reduced with a simple structure, and the weight can be reduced. In addition, the load on the motor 2 can be reduced with a simple structure. Further, the stop position of the worm can be controlled only by turning the switch on and off, and a mechanism capable of controlling the camber angle of the vehicle with high accuracy without requiring a highly accurate actuator and actuator control device can be realized.

Further, the worm wheel 3 has a first terminal 3e ₁ is in contact with the second conducting portion 3f _2, a first state in which the second terminal 3e ₂ abuts against the first conducting portion 3f _1, the first terminal 3e ₁ Is in contact with the third energizing portion 3f ₃ , the second terminal 3e ₂ is in contact with the first energizing portion 3f ₁ , and the second terminal 3e ₂ and the third terminal 3e ₃ are in the first energizing portion 3f _1. Is switched to the third state in which the motor 2 is driven, so that the load on the motor 2 can be reduced with a simple structure. In addition, in the first state and the second state, since the component of the external force with respect to the rotation direction of the first connecting portion is not generated, the locked state is the same as the locked state, so that the external force is strong. . That is, since the transmission member is eccentrically connected to the worm wheel, the centers of the first connecting portion, the second connecting portion, and the worm wheel are arranged in a straight line, so that a force around the rotation axis of the camber angle of the wheel is applied. Since there is no force applied in the direction of rotation of the worm wheel, there is a self-locking effect.

It is the perspective view which looked at the camber angle variable mechanism of 1st Embodiment from back upper direction. It is the figure which looked at the camber angle variable mechanism of 1st Embodiment from back. It is a figure which shows the connection part of the movable plate and knuckle of 1st Embodiment. It is a figure which shows the structure of the motor and worm wheel vicinity of 1st Embodiment. It is the operation | movement schematic when the camber angle of 1st Embodiment is changed. It is a figure which shows the 1st state of the camber angle variable mechanism of 1st Embodiment. It is a figure which shows the 2nd state of the camber angle variable mechanism of 1st Embodiment. It is the perspective view which looked at the camber angle variable mechanism of 2nd Embodiment from back upper direction. It is the figure seen from the side of the camber angle variable mechanism 1 of 2nd Embodiment. It is the figure which looked at the camber angle variable mechanism of 2nd Embodiment from back. It is the operation | movement schematic when the camber angle of 2nd Embodiment is changed. It is a figure which shows the state of the worm wheel 3 when the camber angle is not changing. It is a circuit diagram when the camber angle is not changing. It is the circuit diagram which closed the switch. The figure which shows the state where the worm wheel is rotating It is a circuit diagram when the worm wheel is rotating. It is a figure which shows the state of a worm wheel when a camber angle changes. It is a figure which shows the worm wheel of other embodiment. It is a schematic diagram which shows the relationship between the worm wheel of other embodiment, an arm, and a movable plate. It is a figure which shows the prior art.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Camber angle variable mechanism, 2 ... Motor, 3 ... Worm wheel, 34 ... 1st connection part, 4 ... Arm (transmission member), 45 ... 2nd connection part, 5 ... Movable plate (movable member), 6 ... Rubber Bush (buffer member), 20 ... Knuckle (base member), 21 ... Strut (support member), 22 ... Lower arm, 30 ... Wheel, 31 ... Hub (wheel support member)

Claims (2)

In the camber angle variable mechanism that changes the camber angle of the wheel with respect to the vehicle body,
A base member coupled to the vehicle body side;
A motor provided on the base member and generating a rotational driving force;
A worm wheel that rotates about the worm wheel axis and transmits the driving force of the motor;
A transmission member that is eccentric with respect to the worm wheel shaft and coupled to the worm wheel via a first coupling portion;
The wheel is rotatably supported, connected to the transmission member via a second connecting portion, and rotated with respect to the base member by the driving force of the motor transmitted from the transmission member. A movable member that changes the camber angle,
The worm wheel has a current-carrying part, an insulating part, and a contact point,
The energization unit includes a first energization unit, a second energization unit, and a third energization unit,
The insulating portion includes a first insulating portion formed around a worm wheel shaft on the inner peripheral side of the first energizing portion, a second insulating portion formed on the outer peripheral side of the first energizing portion, and the first A third insulating part formed on the outer peripheral side of the energization part,
The contact point has a first terminal, a second terminal, and a third terminal,
When the worm wheel rotates, the first terminal is provided at a position where the first terminal abuts on the second energization unit, the first insulating unit, and the third energization unit, respectively.
When the worm wheel rotates, the second terminal is always provided at a position in contact with the first energization part,
The camber angle varying mechanism, wherein the third terminal is provided at a position that sequentially contacts the second insulating portion, the first energizing portion, and the third insulating portion when the worm wheel rotates. . The worm wheel is
A first state in which the first terminal is in contact with the second energization unit, and the second terminal is in contact with the first energization unit;
A second state in which the first terminal abuts on the third energization part and the second terminal abuts on the first energization part;
A third state in which the second terminal and the third terminal are in contact with the first energization portion and the motor is driven;
The camber angle varying mechanism according to claim 1, wherein the camber angle varying mechanism is switched at the point.

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