KR100416516B1 - The Camber And Caster Adjustment Apparatus of Car Suspension Using the Eccentricity of Adjustment Shaft - Google Patents

Abstract

PURPOSE: An adjusting apparatus for a camber and a caster of a suspension using an eccentricity adjusting shaft is provided to operate wheel alignment easily by adjusting the camber and the caster at the same time and to improve processing efficiency of a ball joint shaft. CONSTITUTION: An eccentric bushing(160) is inserted to an operating hole(2) of an upper arm(1). An eccentric hole(161) is formed to the eccentric bushing. An upper bolt shaft(240) is screwed in the same axial line with shafts of the eccentric bushing and a ball joint. An eccentric protrusion(210) is formed to the upper bolt shaft eccentrically. A hexagonal head portion(220) is formed integrally underneath the eccentric protrusion and combined in the same axial line of the bolt shaft. A lower bolt shaft(250) is extended from the hexagonal head portion integrally in the same axial line of the upper bolt shaft. The eccentric adjusting shaft comprises upper and lower bolt shafts and the hexagonal head portion. A ball joint shaft(200) is connected to a lower portion of the hexagonal head portion and provided with a grease cover(230) filled with grease. The ball joint shaft is inserted to the eccentric hole of the eccentric bushing.

Description

Camber and Caster Adjustment Apparatus of Car Suspension Using the Eccentricity of Adjustment Shaft}

The present invention relates to a suspension device for an automobile, and more particularly, an automobile suspension using an eccentric control shaft that can accurately and easily provide wheel alignment by simultaneously adjusting a camber and a caster of a suspension device to which an upper arm and a lower arm are applied. A camber and caster adjuster of the device.

In general, a suspension device in a vehicle exists between a vehicle body and a wheel, and is a device that connects the vehicle body and the wheel by using one or more links. The suspension device is a spring and a hydraulic shock absorber in up and down directions. It is supported, and in the other direction, the proper balance of high stiffness and flexibility to perform the function of mechanically matching the relative movement between itself and the wheel.

In addition, the suspension system effectively blocks the irregular input of the road surface generated during driving of the vehicle by suspension springs and shock absorbers to provide a comfortable riding comfort to the occupant, and the vehicle body generated by the driver's driving behavior and the road curvature. It provides driving convenience by controlling the shaking properly, and maintains the vertical load on the tire ground plane at an appropriate level when driving on irregular roads to ensure the maneuverability and stability of the vehicle during turning and braking driving to enable proper driving of the vehicle. The basic conditions must be met.

Various kinds of suspension systems have been developed and applied to actual vehicles to satisfy the above conditions, but the camber and caster change due to the aging phenomenon of parts wear and microgap generation due to impact and long-term use due to the operation of the car. The problem is that wheel alignment is not provided.

At this time, the camber is to facilitate the operation of the steering wheel and to reduce the wear of the tire when changing the driving direction, the caster is to provide the straightness of the vehicle while driving and to provide the restoring force of the steering wheel after the rotation of the vehicle It is a very important part of vehicle safety.

However, the suspension of most vehicles currently do not have a structure for adjusting the camber and the caster, or because only one of the camber and the caster is installed, it is impossible to adjust according to the change of the camber and the caster. The problem arises in that all of the suspensions need to be replaced with new ones.

In addition, various methods for adjusting the camber and the caster have been developed and used, but since the camber and the caster are universally adjusted, respectively, when the camber and the caster are affected by each other, the camber and the caster influence each other. Problems arise that make adjustment of the caster very difficult.

The present invention is developed and used to improve the above problems in detail based on the accompanying drawings. First, Figure 1 is an exploded perspective view showing a suspension device of a vehicle, a wheel carrier for rotatably supporting a wheel of a car tire ( 3), a lower arm 7 which connects the lower part of the wheel carrier 3 with the vehicle, a knuckle 4 formed on the upper side of the wheel carrier 3, and a wheel on which the knuckle 4 is formed. An upper arm 1 coupled to the knuckle 4 by a ball joint shaft 10 so that the carrier 3 is connected to the vehicle body, and a lower end thereof is almost vertically connected to the lower arm 7, and an upper side thereof The stage consists of a shock absorber 6 supported by suspension on the vehicle body.

FIG. 2 is an exploded perspective view showing a ball joint shaft 10 device for adjusting a camber and a caster of a conventional suspension device, and includes an operating hole 2 formed in the upper arm 1 and an operating hole 2. A circular protrusion 11 to be fitted is formed, and a hexagonal head 12 is formed to rotate by a work tool such as a spanner when adjusting the camber and the caster at the lower part thereof, and is built in the lower part of the hexagonal head 12. Grease cover (13) filled with grease (Grease) is combined to facilitate the operation of the ball joint, and the upper and lower bolt shafts (14, 15) formed at each of the upper and lower portions of the grease cover (13) and the circular protrusion (11). It is composed of

At this time, the washer 16 is coupled to the upper bolt shaft 14 of the ball joint shaft 10 at the upper portion of the operating hole 2 of the upper arm 1, and the nut after the washer 16 is coupled to the upper portion thereof. Is screwed with the upper bolt shaft 14, the upper arm 1 and the ball joint shaft 10 is fixedly coupled.

In addition, the lower bolt shaft 15 of the ball joint shaft 10 passes through the through hole 5 of the knuckle 4 after the washer is coupled again to engage the washer and screwed with the nut to the ball joint shaft 10 and The knuckle 4 is fixedly engaged.

As shown in FIGS. 3A and 3B, the ball joint shaft 10 has the upper bolt shaft 14, the circular protrusion 11, and the hexagonal head 12 formed on the same axis, and are thus eccentric. The ball joint is coupled on the axis and the grease cover 13 surrounds it, and the lower bolt shaft 15 is connected so that the camber and the caster can be simultaneously adjusted by the rotation of the hexagonal head 12.

That is, when the hexagonal head 12 is rotated, the grease cover 13 and the lower bolt shaft 15 are eccentric about the central axis of the circular protrusion 11 coupled with the operating hole 2 of the upper arm 1. Rotating to change the angle of the wheel carrier (3) to adjust the camber and caster at the same time.

However, in the conventional ball joint shaft 10 as described above, since the upper bolt shaft 14 and the lower bolt shaft 15 are not formed on the same axis line and are formed as eccentric shafts, the workability is improved. It is very difficult and has the disadvantage that the efficiency of the machining operation is very low. In addition, since the upper bolt shaft 14 and the lower bolt shaft 15 are eccentrically formed in the conventional ball joint shaft 10, a problem occurs that the durability thereof is very weak against impact generated during driving.

The present invention has been made to overcome the problems of the prior art,

It is to provide a control device that can simultaneously adjust the camber and caster of the suspension device by using an eccentric control shaft that can be formed on the same axis of the upper bolt shaft and the lower bolt shaft while adjusting the eccentricity.

In addition, the present invention provides a camber and caster control device of the vehicle suspension to adjust the camber and caster of the suspension at the same time to accurately and easily wheel alignment, improve the processing efficiency of the ball joint shaft, and also improve the durability do.

1 is an exploded perspective view showing a suspension device of a vehicle

Figure 2 is an exploded perspective view of the camber and caster control device of the conventional suspension device 3a is a plan view showing the eccentric device of the conventional ball joint shaft 3b is a cross-sectional view showing the eccentric device of the conventional ball joint shaft

Figure 4 is an exploded perspective view of the eccentric control shaft according to the present invention

Figures 5a, 5b, 5c, 5d is an operation of the state the eccentric control shaft of the present invention rotates

Figures 6a, 6b, 6c, 6d is an operation of the state of the present invention the eccentric bushing is rotated Figure 7a is an exploded perspective view of the camber and caster adjustment device of the suspension according to the present invention

7b is a cross-sectional view of the camber and caster adjustment device of the suspension device according to the present invention;

8A and 8B are a plan view and a front view showing an eccentric device of the ball joint shaft of the present invention.

9A and 9B are a plan view and a cross-sectional view showing the camber and caster action

<Explanation of symbols for main parts of the drawings>

1-Upper Arm 2-Through Hole

3-Wheel Carrier 4-Knuckle

6-Shock Upshoot 7-Lower Arm

30-Guide Washers 31-Guide Balls

160-Eccentric Bushings 161-Eccentric Holes

100: eccentric control shaft 110, 210: eccentric protrusion

120, 220: hexagon head 200: ball joint shaft

140, 240: upper bolt shaft 150, 250: lower bolt shaft

The present invention provides a camber and caster control device of the vehicle suspension using the eccentric control shaft to improve the problems of the prior art.

The eccentric control shaft according to the present invention includes an upper bolt shaft screwed to an eccentric bushing, a ball joint shaft and a concentric extension shaft, an eccentric protrusion formed integrally with the upper bolt shaft in one direction, and a lower portion of the eccentric protrusion. A hexagonal head portion formed integrally with the upper bolt shaft and formed on the concentric axis of the upper bolt shaft, and the lower bolt shaft formed on the concentric shaft line with the upper bolt shaft and integrally extended from the hexagonal head portion.

In addition, the eccentric control shaft according to the present invention, the upper bolt shaft is coupled to the upper arm and the lower bolt shaft to the knuckle, the eccentric bushing or the eccentric control shaft rotates and moves relative to each other in the up, down, left and right directions. do.

That is, the camber and caster adjusting device of the vehicle suspension apparatus according to the present invention includes a wheel carrier for rotatably supporting wheels of an automobile tire, a lower arm connecting a lower part of the wheel carrier with a vehicle, and the wheel carrier. A knuckle formed on the upper side of the upper arm, an upper arm coupled to the knuckle by a ball joint shaft so that the knuckle is connected to the vehicle body, and a lower end connected to the lower arm almost vertically, and the upper end of which is suspended from the vehicle body. A suspension device comprising a shock absorber comprising: an eccentric bushing coupled to an operating hole of an upper arm to simultaneously adjust a camber and a caster of the suspension device, and having an eccentric hole at a predetermined distance from the center thereof; An upper bolt shaft that is screwed to an upper arm, an eccentric protrusion that is eccentrically formed in one direction with the upper bolt shaft, and a hexagon head that is integrally coupled to a lower portion of the eccentric protrusion and coaxial to the upper bolt shaft. An eccentric control shaft comprising: a lower bolt shaft which is coaxial with the upper bolt shaft and integrally extended from the hexagonal head; It is coupled to a well-known ball joint consisting of a grease cover is coupled to the lower portion of the hexagonal head and filled with grease. Correspondingly inserted into the eccentric hole of the eccentric bushing is rotated about the central axis of the eccentric hole by the rotation of the hexagonal head.

In addition, the present invention is guided to the upper bolt shaft eccentrically rotated by the eccentric protrusion and coupled to the upper portion of the operating hole so that the ball joint can be firmly fixed to the upper arm, the guide hole is formed to guide the rotation space of the upper bolt shaft It is preferable to further provide a washer.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. 4 is an exploded perspective view of the eccentric control shaft according to the present invention.

An eccentric hole 161 eccentric to one side of the center is formed in the eccentric bushing 160, the eccentric protrusion 110 is fitted to fit the eccentric hole 161 is formed to correspond to the work tool such as a spanner Hexagonal head 120 that can rotate itself is coupled, the upper and lower sides of the hexagonal head 120 and the eccentric protrusion 110 is coupled to the same axis and the hexagonal head 120 on the bottom, It consists of the bolt shaft (140,150).

The upper bolt shaft 140 is the upper arm and the lower bolt shaft 150 is fixed to the knuckle by screwing, the eccentric bushing 160 is coupled to the upper arm, the hexagonal head ( When rotating the 120, while the eccentric control shaft 100 is fixed, the mechanical parts coupled to the outside of the eccentric bushing 160 is eccentrically rotated in the up, down, left, and right directions to perform relative movement. In the state in which the eccentric bushing 160 is fixed, the mechanical elements combined with the upper bolt shaft 140 and the lower bolt shaft 150 are rotated eccentrically in the up, down, left, and right directions to perform relative movement. Will be.

That is, FIGS. 5A, 5B, 5C, and 5D of the accompanying drawings show a state in which the eccentric control shaft 100 is rotated by 90 ° while the eccentric bushing 160 is fixed, and the center of the eccentric bushing 160 is provided. The shaft is the same as before the change, but the eccentric control shaft 100 is eccentric rotation in the eccentric hole 161 and the center axis is changed in the up, down, left and right directions by the amount rotated, the upper bolt shaft 140 And the upper arm and the knuckle coupled to the lower bolt shaft 150 are eccentrically rotated.

At this time, the mechanical element is coupled to only one of the bolt shafts of the upper bolt shaft 140 and the lower bolt shaft 150, and the other does not combine anything or for simple position fixing (inserted into the hole and fixed with a nut) Of course, combined with the belonging to the scope of the present invention.

In addition, Figure 6a, 6b, 6c, 6d of the accompanying drawings showing a state in which the eccentric bushing 160 is rotated by 90 ° in a state in which the eccentric control shaft 100 is fixed, the eccentric control shaft 100 The central axis is the same as before the change, but the eccentric bushing 160 is eccentrically rotated in the eccentric hole 161 and the central axis is changed in the up, down, left and right directions by the amount rotated, so that the eccentric bushing 160 The upper arm coupled to the outside is eccentric rotation.

On the other hand, in the eccentric rotation of the eccentric control shaft 100 or the eccentric bushing 160, the change in the left and right directions, along with the change in the up and down direction occurs along with the up and down bolts The knuckle or upper arm may be eccentrically rotated in the up, down, left and right directions together with the shafts 140 and 150 or the eccentric bushing 160. Therefore, the present invention provides a ball joint shaft using the eccentric control shaft 100. It is possible to provide a camber and caster control device of the vehicle suspension combined 200.

Figure 7a is an exploded perspective view of the camber and caster adjustment device of the suspension according to the present invention, Figure 7b is a cross-sectional view of the camber and caster adjustment device of the suspension according to the present invention.

As shown, a wheel carrier rotatably supporting a wheel of an automobile tire, a lower arm connecting a lower portion of the wheel carrier with a vehicle, a knuckle formed on an upper side of the wheel carrier, and the knuckle body An upper arm coupled to the knuckle by a ball joint shaft, and a shock absorber having a lower end connected to the lower arm almost vertically, the upper end of which is suspended from the vehicle body. In a common suspension device,

Eccentric bushing 160 is fitted into the operating hole (2) of the upper arm (1) to adjust the camber and the caster of the suspension at the same time, the eccentric bush (160) provided with an eccentric hole (161) at a predetermined distance from the center and; An eccentric bushing 160 and an upper bolt shaft 240 screwed on a concentric axis with the shaft of the ball joint; An eccentric protrusion (210) formed integrally with the upper bolt shaft (240) in one direction; Hexagonal head portion 220 is formed integrally under the eccentric protrusion 210 and coupled to the concentric axis of the upper bolt shaft 240; An eccentric control shaft (100) formed on the concentric shaft line with the upper bolt shaft (240) and consisting of a lower bolt shaft (250) extending integrally from the hexagonal head portion (220); It is composed of a known ball joint shaft 200 including a grease cover 230 which is built in the lower portion of the hexagonal head 220 and filled with grease, and corresponds to the eccentric hole 161 of the eccentric bushing 160. The camber and caster control device of the vehicle suspension using the eccentric control shaft, characterized in that the rotation is based on the central axis of the eccentric hole 161 is inserted by the rotation of the hexagonal head 220. In Figure 7b it can be seen the coupling relationship of these components.

It is coupled to the upper bolt shaft 240 eccentrically rotated by the eccentric protrusion 210 and is coupled to the upper portion of the operating hole (2) so that the ball joint shaft 200 can be firmly fixed to the upper arm (1), the upper The guide washer 30 is formed with a guide hole 31 for guiding the rotation of the bolt shaft 240 is coupled.

In addition, the lower bolt shaft 250 of the ball joint shaft 200 is coupled to the washer after passing through the through hole 5 of the knuckle (4) after coupling the washer and screwed with the nut to the ball joint shaft 200 and The knuckle 4 is fixedly engaged.

8A and 8B are a plan view and a front view showing the eccentric action of the ball joint shaft.

The upper bolt shaft 240, the hexagonal head 220, and the lower bolt shaft 250 of the ball joint shaft 200 are formed on the same axis, and only the eccentric protrusion 210 is eccentrically formed at the center thereof. . The present invention is coupled to the suspension of the vehicle can be easily adjusted at the same time the camber and caster. That is, loosen the nut bolted to the upper bolt shaft 240 of the ball joint shaft 200, and fixed by inserting a tool such as a spanner to the hexagonal head 220, and then rotates in the desired direction ball joint shaft 200 The eccentric rotation with respect to the central axis of the eccentric protrusion 210 is to be adjusted at the same time by changing the camber and the caster.

When the ball joint shaft 200 is machined, only the eccentric protrusion 210 needs to be eccentrically processed, thereby greatly simplifying the processing, thereby improving processing efficiency, and allowing the upper bolt shaft 240 and the lower bolt shaft 250 to have the same shaft. Since it is formed on a shipboard, its durability is improved, so that it is not damaged or deformed even when an impact generated during driving occurs.

At this time, since the eccentric protrusion 210 is fitted to the eccentric hole 161 of the eccentric bushing 160, when the ball joint shaft 200 is rotated by a tool such as a spanner, the ball joint shaft 200 is Since the inside of the eccentric hole 161 rotates with the eccentric protrusion 210 and is eccentrically rotated with respect to the central axis of the eccentric protrusion 210, the eccentric protrusion 210 must be rotated inside the eccentric hole 161. It is preferable not to forcibly fit the eccentric protrusion 210 in the eccentric hole 161, but to make a smooth rotation by making the fitting a little loose.

Then, if the desired camber and caster are adjusted while rotating the hexagonal head 220, the upper bolt shaft 240 and the nut are screwed again to fix the angle so as not to change. Top and cross-sectional views showing the camber and caster adjustment according to the invention. The upper bolt shafts 140 and 240 are coupled to the upper arm 1, and the lower bolt shafts 150 and 250 are fastened to the knuckle 4. In the state where the eccentric bushing 160 is fixed, the eccentric control shaft 100 is eccentrically rotated in the eccentric hole 161 and the central axis is eccentrically rotated in the up, down, left, and right directions by the amount rotated, and the eccentric control is performed. In the state in which the shaft 100 is fixed, the eccentric bushing 160 rotates eccentrically in the eccentric hole 161 and performs a relative motion in which the central axis is eccentrically rotated in the up, down, left, and right directions by the amount of rotation.

That is, when the hexagon head 220 is rotated by coupling a tool such as a spanner to the hexagonal head 220, the ball joint shaft 200 is rotated based on the central axis of the eccentric protrusion 210. As shown in FIG. 9A, the center of the ball joint shaft 200 is rotated from the upper side to the lower side or the lower side to the upper side to adjust the precise camber, and as shown in FIG. 9B, the center of the ball joint shaft 200 is moved from left to right. Rotate in or right to left to adjust the correct caster.

At this time, when the ball joint shaft 200 eccentrically rotates about the eccentric protrusion 210 when the eccentric rotation to the right or left, the center of the ball joint shaft 200 with the position change in the left and right directions Since the position change in the up and down directions also occurs, the camber and the caster are changed in one rotation, and thus the correct camber and caster can be adjusted at the same time.

As described above, according to the present invention, since the camber and the caster of the suspension device are simultaneously adjusted by using the eccentric control shaft capable of adjusting the eccentricity, the wheel alignment can be precisely and conveniently. In addition, since only the eccentric protrusions are required to be eccentric in the ball joint shaft machining, the machining is very easy, and the processing efficiency is improved. Since the upper bolt shaft and the lower bolt shaft are formed on the same axis, the durability is improved, which is generated during driving. There is an advantage that even the impact is not broken or deformation occurs. Therefore, it is possible to manufacture a control shaft with improved workability and durability, it is possible to provide a camber and caster control device of the excellent vehicle suspension.

Claims (4)

delete delete A wheel carrier rotatably supporting the wheel of the automobile tire, a lower arm connecting the lower portion of the wheel carrier with the vehicle, a knuckle formed on the upper side of the wheel carrier, and a ball joint so that the knuckle is connected to the vehicle body An upper arm coupled with the knuckle by a shaft, and a shock absorber having a lower end connected to the lower arm almost vertically, the upper end of which is suspended from the vehicle body. In a common suspension device, Eccentric bushing 160 is fitted into the operating hole (2) of the upper arm (1) to adjust the camber and the caster of the suspension at the same time, the eccentric bush (160) provided with an eccentric hole (161) at a predetermined distance from the center and; Eccentric bushing 160, on the axis and the concentric axis of the ball joint Upper bolt shafts 140 and 240 that are screwed together; An eccentric protrusion (110, 210) integrally formed integrally with the upper bolt shaft (140, 240) in one direction; Hexagonal heads (120, 220) integrally formed under the eccentric protrusions (110, 210) and coupled on the concentric axis of the upper bolt shaft (140, 240); An eccentric control shaft 100 formed on the concentric shaft line with the upper bolt shafts 140 and 240 and consisting of lower bolt shafts 150 and 250 extending integrally from the hexagonal heads 120 and 220; Consists of a known ball joint shaft 200 coupled to the lower portion of the hexagonal head (120,220) and filled with grease-filled grease cover 230, and corresponds to the eccentric hole (161) of the eccentric bushing (160) The camber and caster control device of the vehicle suspension using the eccentric control shaft, characterized in that the rotation is based on the central axis of the eccentric hole 161 is inserted by the rotation of the hexagonal head (120, 220). delete