KR100546478B1 - Three Point Fixed Wheel Alignment Measuring Device Fastening Device - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fastening device for mounting a wheel alignment measuring instrument for measuring the alignment of automobile wheels on a wheel, and using three bevel gears and screws, three jaws are placed in concentric circles of the wheel. By making the acute angle of contact with the vertex of the equilateral triangle move, it is possible to precisely and easily tighten the wheel alignment measuring device fastening device.

In particular, all forces acting during fastening are acted only in the center direction, minimizing the bending moment acting on each component of the wheel alignment measuring device including the jaw and the moving part to secure the precision of the mounting and the durability of the fastening device. To make it possible.

Wheel Alignment, Bevel Gear, Three Point Fixing, Jaw

Description

THREE POINT FIXABLE WHEEL ALIGNMENT SENSOR CLAMP}             

1 is a perspective view of the present invention.

FIG. 2 is a cross-sectional view taken along the line AA ′ in FIG. 1. FIG.

Figure 3 is a mounting state of the present invention.

4 is a partially cutaway perspective view of the present invention.

Figure 5 is a wheel alignment measuring device fastening device of the prior art

Figure 6 is an excerpt perspective view of a wheel equipped with the present invention.

7 is a conceptual view illustrating the mounting principle of the present invention.

8 is a conceptual view illustrating a mounting principle of the related art.

<Code Description of Main Parts of Drawing>

10: Arm

11: Information Home

12: central axis

20: Screw

21: handle

30: Jaw

31: moving part

41: center bevel gear

42: Screw Bevel Gears

50: Wheel

51: Front Flange

60: wheel alignment measuring instrument

The present invention relates to a fastening device for mounting a wheel alignment measuring device for measuring the alignment of the wheels on the wheel, using three bevel gears and screws (Jaw) to form a vertex of an isosceles equilateral triangle at the wheel By fastening, it is to enable a fast and secure fastening.

In general, the wheel of the vehicle has a unique angle with respect to the vehicle body and the steering device for each vehicle type, and determine the wheel alignment, that is, the alignment of the wheel by measuring the angle and the installation position of the wheel.

The measurement elements of wheel alignment can be largely classified into four types: camber, caster, kingpin angle, and toe. It is possible to prevent the damage, increase the straightness, the grounding and operability, and prevent the wear of the tire.

In general, the wheel alignment is measured by a measuring device which is attached to the wheels of the vehicle and detects the angle of each position and the direction of gravity through the position sensor and the angle sensor. Fastening to the front flange (51) of the wheel (part consisting of fork and rim and connecting the axle and the tire) 50 constituting the automobile wheel by the fastening device composed of a jaw of the jaw (50) Will be.

In the conventional wheel alignment measuring device fastening device, as shown in FIG. 5, a pair of upper and lower pairs of moving parts 31 provided with a pair of jaws 30 are respectively coupled to the screw 20, and the screw 20 is The upper and lower screw directions are formed to be opposite to each other, and as the knob 21 is rotated, the moving part 31 is moved toward or away from the center side.

Therefore, the conventional wheel alignment measuring device fastening device is fixed to the wheel 50 in the same manner as in Figure 8, as can be seen through the same figure, the direction of action of the force for fastening the center of the wheel 50 Since the direction is not precise, not only the tightening state is accurate, but also the torsion moment and the bending moment act on the jaw 30 and the moving part 31, causing deformation of these parts and adversely affecting the durability of the overall fastening device. Will be given.

In particular, the force is concentrated in the corner portion of the jaw 30 which is in direct contact with the wheel 50, causing excessive deformation or wear of the jaw 30 and consequently the center of the fastener and the wheel 50 There was a serious problem that the centers do not coincide, which lowers the measurement accuracy of wheel alignment.

The present invention was devised in view of the above-described problems, unlike the conventional four-point fixing method, by making the three jaws move to form a vertex of an acute equilateral isosceles triangle inscribed in concentric circles of the wheel, the wheel alignment measuring instrument is fastened The mounting of the device on the wheel enables precise and simple fastening.

In particular, all forces acting during fastening act only in the center direction, minimizing the bending moment acting on each component of the wheel alignment measuring device fastening device including the jaws and moving parts, thereby ensuring the accuracy of the mounting as well as the fastening device. To ensure the durability of the.

The detailed structure and operation principle of the present invention will be described with reference to the accompanying drawings.

In the present invention, as shown in Figs. 1, 2 and 4, the three support arms (10) in which the screw (20) and the jaw (30) are installed are radially around the central axis (12). Arranged in the form of amplification, the intersection of the circle centered on the support arm 10 and the central axis 12 constitutes the vertex of the acute isosceles triangle.

A guide groove 11 in a longitudinal direction is formed in each support arm 10, and a screw 20 is installed in the guide groove 11 in a horizontal direction with the support arm 10.

As shown in FIGS. 2 and 4, the central bevel gear 41 is installed at the central axis 12, and the screw bevel gear 42 is installed at the central end of each screw 20 so that they are connected to each other. When the screw 20 is rotated, the remaining screws 20 are also rotated at the same angular speed.

These screws 20 are coupled to the moving part 31 is formed with a female thread hole corresponding to the screw 20, the moving part 31 is formed so that the outer shape is coincident with the guide groove 11, the screw 20 is Even when rotated, the moving part 31 coupled thereto is not rotated.

Accordingly, when the screw 20 rotates, the moving part 31 reciprocates along the guide groove 11, and in the present invention, since the three screws 20 rotate at the same angular velocity, each moving part ( 31 and the distance between the central axis 12 is equal.

Each moving part 31 is provided with a jaw 30 that is in direct contact with the wheel 50 to serve as a forceps, by these jaws 30, as shown in Figs. 3 and 6, the wheel alignment measuring device 60 ) Is fastened to the front flange 51 of the wheel (50).

One of the screws 20 is provided with a handle 21, thereby rotating the handle 21 to adjust the distance between each jaw 30 and the central axis (12).

Due to the geometry of the present invention, the three jaws 30 always form a vertex of an acute equilateral isosceles triangle inscribed in the concentric circle of the wheel 50, so that all forces acting upon mounting as shown in FIG. Therefore, the bending moment does not act on all the parts including the moving part 31, and thus the deformation causing the eccentricity does not occur. Therefore, the wear and fatigue of the parts due to the repeated bending moment during the mounting and removal process as well as the precise mounting The deformation can be prevented.

When the angle between the support arms 10 is 120 degrees, the jaws 30 form the vertices of the equilateral triangle, and the center of gravity of the triangle and the center axis 12 and the wheel 50 of the jaws 30 are All of them match, which is the most desirable form.

As a result, the technical gist of the present invention is a fastening device for fastening a wheel alignment measurer of a vehicle to a wheel, wherein three support arms 10 having guide grooves 11 formed therein are centered on a central axis 12. A central bevel gear 41 is formed in a radial shape and the inner angle between adjacent support arms 10 is less than 180 degrees, and a central bevel gear 41 is installed on the central axis 12 to rotate the shaft. In the guide groove 11 of the 10, the support arm 10 and the screw 20 in a horizontal direction is installed, the screw bevel gear connected to the central bevel gear 41 at the end of the central axis (12) ( 42 is installed, and each screw 20 is formed with a female threaded hole corresponding to the screw 20 at one end and a moving part 31 provided with a jaw 30 at the other end is coupled to the screw 20 Is coupled to move along the guide groove (11) without rotating about the axis, at least a portion of the screw (20) is the support arm (1) 0) protrudes to the outside and the handle 21 is installed here, and as the handle 21 rotates, the three jaws 30 form a vertex of an acute equilateral isosceles triangle inscribed in a circle around the center axis 12. It is a three-point fixed wheel alignment measuring device fastening device characterized by moving.

Through the present invention, the wheel alignment measuring device fastening device quickly and automatically finds the center without a separate tooth center (置 心) process, and all the forces acting in the center direction during fastening, the bending moment in each component constituting the fastening device Can be suppressed from occurring, and the effect of ensuring precise fastening and durability of the fastening device can be obtained.

Claims (1)

In the fastening device for fastening the wheel alignment measuring instrument of the vehicle to the wheel, three support arms (Arm) 10 having a guide groove 11 formed therein is formed radially around the central axis (12) Become; The central axis 12 is provided with a central bevel gear 41 to rotate it in the axis; Inside the guide groove 11 of each support arm 10, the support arm 10 and a screw 20 in a horizontal direction are installed, and connected to the center bevel gear 41 at the end of the central axis 12 side. Screw bevel gear 42 is installed; Each screw 20 is formed with a female threaded hole corresponding to the screw 20 at one end and a moving part 31 provided with a jaw 30 at the other end thereof is coupled to the screw 20 without rotating the screw 20 about its axis. It is coupled to move along the guide groove (11); A portion of at least one of the screws 20 protrudes out of the support arm 10 and a handle 21 is installed therein, so that the three jaws 30 are centered on the shaft 12 as the handle 21 is rotated. 3) Fixed three-point wheel alignment measuring device, characterized in that moving to form a vertex of an isosceles isosceles triangle inscribed in the center circle.

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