DEVICE FOR CAMBER ANGLE CORRECTION

Abstract

DEVICE FOR CAMBER ANGLE CORRECTION refers to a device's constructive setting for the correction of camber angle in automotive vehicles that can be used in various types of suspension and not just the MacPherson ones, increasing its possibilities of application and turning it universal. Said device comprises a hydraulic pump, which hose is connected to a positive and negative action hydraulic cylinder (11), and said hydraulic pump has directional valve, and the hydraulic piston (11) provides also a hub (12) for a support base near the end of the rod movement of said hydraulic piston (11). This said support base can be a straight support base (20) fixed at the wheel hub, or a curved auxiliary support base (30) fixed in the vehicle's shaft sleeve; and the rod tip of the hydraulic piston (11) should be attached on a fixing bracket (40) which in turn is fitted around the car's suspension column.

Claims

1. DEVICE FOR CAMBER ANGLE CORRECTION, comprising a hydraulic pump, which hose is connected to a positive and negative action hydraulic cylinder (11), characterized by the hydraulic pump, it has directional valve and the hydraulic piston (11) provides fitting (12) support base near the end of the rod movement of said hydraulic piston (11), which can be a straight support base (20) fixed to the wheel hub, or a curved auxiliary support base (30) fixed to the shaft sleeve of the vehicle; and at the tip of the hydraulic piston (11) should be coupled a fixing bracket (40) which in turn is fitted around the car's suspension column.

2. DEVICE FOR CAMBER ANGLE CORRECTION, according to claim 1, characterized by support base (20), comprises a central lug (21), surrounded by universal holes (22) and has an extension (23) with a fork (24), with spacing compliant to allow engagement of fitting (12) of the cylinder (11) and its adjustment along the spacing.

3. DEVICE FOR CAMBER ANGLE CORRECTION, according to claim 1, characterized by the curved auxiliary support base (30), it has extension (32) and a fork (33) with spacing to enable the hydraulic piston fitting (11) and has fastening means (34) at the shaft sleeve of the vehicle.

4. DEVICE FOR CAMBER ANGLE CORRECTION, according to claim 1, characterized by the fixing mean (34) to be a screw positioned in holes at the auxiliary support base (30) and tightening a clamp around the shaft sleeve.

5. DEVICE FOR CAMBER ANGLE CORRECTION, according to claim 1, characterized by the fixing mean (34) to be a screw positioned in holes at the auxiliary support base (30) and tightening directly the shaft sleeve.

6. DEVICE FOR CAMBER ANGLE CORRECTION, according to claim 1, characterized by fitting (12) of hydraulic piston (11) to be an extension on the cylinder end with a compatible recess to fit the fork spacing (24 or 33), of the support base (20) or auxiliary support base (30).

Description

[0019] FIG. 1 shows a perspective view of support base (20), which is the one fixed on the wheel hub.

[0020] FIGS. 2A, 2B, 2C and 2D show perspective views of some possible shapes for the curved auxiliary support base (30), which will be fixed on the shaft sleeve.

[0021] FIG. 3 shows an embodiment of device, using the support base (20); in cars where fixation will be made by the wheel hub.

[0022] FIGS. 4A and 4B show possible embodiments to curved auxiliary support base (30); used in cars where fixation shall be made by the shaft sleeve.

[0023] In reference to the figures presented, said device comprises a hydraulic pump (10) with directional valve, a double action hydraulic piston (11), with fitting (12) near the end of its drive shaft; this fitting (12) has the function to hold the support base (20) or auxiliary support base (30); technically this fitting (12) enables the use of double action hydraulic piston (11), since both in advance and in reverse, the fitting (12) allows the support base to be pushed or pulled by said piston; Unlike the previous configuration that the piston had to be replaced and repositioned, being one for pushing the shaft and the other to pull.

[0024] The support base (20), shown in FIG. 1, is going attached to the wheel hub; includes a central lug (21) provided with universal holes (22), especially oblong, especially sized to be concentric to the wheel hub holes of various types of vehicles, this lug (21) has an extension (23) with a fork (24), allowing the coupling of the fitting (12) of the cylinder (11). The fork shape, which is open at one end favors the ease of assembly of the hydraulic piston (11); the spacing is compatible to that of said piston fitting. The end of the hydraulic piston shaft (11) should be attached on a fixing bracket (40) which in turn is fitted around the car's suspension column.

[0025] FIGS. 2A, 2B, 2C and 2D show format variations of the auxiliary support base (30), having curved body (31), differently from the support base (20). This format setting is used so that said auxiliary support base (30) is used in cars where fixing has to be done by shaft sleeve, and not by wheel hub. It also provides for an extension (32) and a fork (33) with spacing to enable fitting the hydraulic piston (11); further comprising means for its fixing (34) that can be positioned at the lower end, the upper end or the central region of said body (31) or in more than one place simultaneously, without destroying the inventive concept of the object.

[0026] FIG. 3 then shows a device mounted on a car where the fixing should be made by the wheel hub. In this condition, it uses the support base (20) whose configuration is for such a purpose. Thus the support base (20) is positioned so that the lug (21) becomes concentric to the wheel hub and the holes are used (22) compatible for fixing to the hub; it's positioned the hydraulic piston (11) in the spacing of the forks (24) holding its rod close to the car suspension, by means of a fixing bracket (40). The hydraulic piston (11) must be coupled to the hydraulic pump (10) with directional valve.

[0027] FIGS. 4A and 4B illustrate assemblies using the device, but in a car where the fixing must be made by the shaft sleeve. For this case, the auxiliary support base is used (30) curved, with their most appropriate format. Was used for purposes of illustration a base with the body (31) curved, and the extension (32) also with the same concept, having a fork-shaped (33) to couple the hydraulic piston (11), and uses a means fixing (34) to secure it to said swing axis, which may be a screw positioned in holes in the auxiliary support base (30) and tightening a clamp around the shaft sleeve, and a screw positioned in holes in the auxiliary support base (30) and which is fixed directly on the shaft sleeve, but without destroying the inventive concept of the auxiliary support base (30); they may also present some small differences in shape, it will be appropriate to better fit into certain types of suspension. However, these format variations should not disfigure the object of this document.

[0028] For a better understanding of the use of the device, it must be used as follows: First position to the vehicle in alignment ramp specific equipment performs the diagnosis of alignment, then the vehicle is lifted and the wheel is removed, the hand where needed to correct it. Then installs directly into the vehicle's wheel hub, the support base (20), if this is the most appropriate condition; or settles directly on the sleeve shaft of the vehicle, the auxiliary support base (30) curve with the most suitable shape for the car. It is then installed hydraulic piston (11) by placing its seat (12) on the yoke (24 or 33 dependent on the base format) and said hydraulic piston (11) must be coupled to the hydraulic pump (10) with directional valve; then the end of the hydraulic piston rod (11) is coupled to a fixing bracket (40) which is fixed to the vehicle suspension column. It makes up the correction procedure.

[0029] The support point can be the wheel hub, for some cases, when using the support base (20) or the shaft sleeve, in other cases, when using the auxiliary support base (30); then a force is exerted by the hydraulic pump, which will push or pull the vehicle's suspension column to the point of correcting warping that caused misalignment.

[0030] This action is controlled through a slit (not shown), which will measure how much is being moved, giving precision in the final result; once reached the required shift, take it apart if the camber correction for device parts and becomes to make the diagnosis to confirm that the vehicle is to the wheel alignment measurements within the standards established by the same manufacturer.

[0031] Making it clear that the curved auxiliary support base (30), compatible to allow its fixing to the vehicle's shaft sleeve, is used for vehicles which cannot use the straight support base (20). This can have various shapes since small adjustments in the curvature or shape can facilitate their use in some vehicle models. The position of their fixation means (34) may also vary and may especially be at the lower end of said base, or more in the central region, or more at the upper end. The positioning of the support base holes (20) can also have minor changes to be suitable to serve the maximum number of available wheel hubs.