JPH0726741U - Wheel unbalance correction weight sticking position indicating method and device - Google Patents

Abstract

(57) [Summary] [Purpose] The wheel inner diameter and axial distance are measured in order to accurately attach the unbalance correction weight to a specific optimum location on the wheel rim radial inner surface. A rod having an angle measuring device and a length measuring device for accurately measuring an inner diameter of a specific portion of a wheel rim radial inner peripheral surface and an axial distance from a reference position is provided. In addition, a balance weight mounting table is provided on the rod.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to correction of unbalance of a wheel incorporating a tire.

[0002]

[Prior art]

 The conventional technique is used as a calculation parameter in the wheel unbalance measurement before wheel unbalance measurement in a wheel unbalance correction machine, as disclosed in JP-A-53-96884 and Shokai 59-78954. Devices for measuring the inner diameter of the wheel and the axial distance to the inner surface of the wheel from a predetermined reference position were known.

[0003]

[Problems to be solved by the device]

 According to the present invention, as disclosed in Japanese Unexamined Patent Publication No. 5-209084, a static and dynamic simultaneous unbalance measuring device measures the amount of unbalance correction, and then the static unbalance amount is minimized within the tire rim width. The purpose is to accurately and easily correct the unbalance correction amount and position when attaching the unbalance correction weight to a specific location on the inner rim surface of the wheel. Furthermore, by placing the unbalance correction weight on the tip of the rod, it is possible to accurately attach it to the corrected specific position.

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention accurately attaches an imbalance correction weight to a wheel balancer for an automobile at a specific location on the inner circumferential surface of the wheel in the rim radial direction. It is equipped with a measuring rod consisting of an angle measuring device, a length measuring device, and a mounting table for accurately measuring the axial distance of.

[0005]

When the weight is attached to a specific optimum position on the inner peripheral surface of the wheel in the rim radial direction, the weight amount can be easily and accurately corrected by the wheel inner diameter.

[0006]

【Example】

 An embodiment of the present invention will be described based on the drawings. FIG. 1 is a front view showing an embodiment of the present invention. In this case, the wheel mounting rotary shaft of the balancer is the horizontal axis type, but the vertical axis type is also the same. Reference numeral 1 is the balancer body, and the wheel inner diameter and the distance to the inside of the wheel are automatically input from the measurement rod of reference numeral 2 and the wheel is rotated to display the tire rotation angle and the axial position of the weight mounting position. Has become. FIG. 2 shows a measuring rod of the present invention, which comprises an angle measuring device (for example, a potentiometer is used), a length measuring device and a balance weight mounting table. FIG. 3 shows the relationship between the measured value of the rod of the present invention, the inner diameter of a specific portion of the wheel, and the axial distance from a predetermined reference position. R and M are automatically determined by the values of L and θ. Built into the balancer body as calculated.

Hereinafter, an example of a procedure for actually attaching the unbalance correction weight in the present invention will be described. (1) The inner diameter R1 of the wheel and the distance M1 to the inner side of the wheel are automatically input to the balancer body 1 by the measuring rod 2 of the present invention. Enter the width of the wheel at the same time. (2) Rotate the wheel 4 and measure the unbalance according to the method of JP-A-5-209084. (3) The rotation angle and axial position of the tire at the static unbalance correction weight mounting position are displayed on the balancer body. (For a balancer machine with a vertical rotation axis, the sticking position is right above, and for a balancer machine with a horizontal rotation axis, the sticking position is normally on the front side.) (4) The tip of the rod 2 is attached to the weight. Press to fix the static unbalance. Measure the inner diameter of the weight mounting position. (5) Recalculate the amount of static unbalance correction weight based on the inside diameter of the weight mounting position. (6) Place the recalculated amount of static unbalance correction weight on the rod balance weight mounting table 9. With the weight on, move the rod to the position where the weight is attached and attach the weight to the wheel. At this time, it is preferable to prepare several types of mounting bases according to the shape of the weights so that the weights do not fall off due to the movement and there is no backlash during sticking. (7) Attach the dynamic balance as indicated.

The method of sticking the static unbalance amount when the dynamic unbalance amount is minimized has been described above. In this method, even if the procedure of (7) above is omitted, the recent wheel and tire uniformity is eliminated. Considering the improvement in accuracy, it is sufficiently practical. Furthermore, when the wheel unbalance correction weight is not attached to the rim flange from the mechanism or the appearance like a light alloy wheel, the wheel inner diameter R1 and the distance to the inside of the wheel M1 can be specified instead of the distance. By using the inner diameter of the location and the distance, the amount of unbalanced weight can be accurately applied even with the conventional method.

[0009]

[Effect of device]

 As disclosed in Japanese Patent Laid-Open No. 5-209084, a method of correcting an unbalance correction amount with a static / dynamic simultaneous unbalance measuring device and then correcting the static unbalance amount within the tire rim width so that the dynamic unbalance amount is minimized. The correction amount and position can be corrected easily and accurately. As a result, it is possible to eliminate the weight imbalance of the rim-mounted tire that causes vertical vibration of the vehicle and abnormal vibration of the steering wheel. In addition, especially when it is not necessary to attach the wheel unbalance correction weight to the rim flange due to its mechanism or appearance, such as a light alloy wheel, the attachment work can be performed easily and accurately.

[Brief description of drawings]

FIG. 1 is a sticking position indicating device for a wheel unbalance correction weight according to the present invention.

FIG. 2 is a rod for measuring an inner diameter of a specific portion of the present invention and an axial distance from a reference position.

FIG. 3 shows the relationship between the measured value of the rod of the present invention, the inner diameter of a specific portion of the wheel, and the axial distance from the reference position.

[Explanation of symbols]

 1 balancer main body 2 measuring rod 3 balancer wheel mounting rotary shaft 4 imaginary line representing inner circumferential surface of wheel rim in radial direction 5 tire cross section 6 rim flange part 7 angle measuring device 8 length measuring device part of expandable rod 9 balance Weight stand

Claims (3)

[Scope of utility model registration request] 1. In order to accurately attach a wheel unbalance correction weight for an automobile to a specific optimum position on a wheel rim radial inner peripheral surface, an inner diameter of the position and an axial distance from a predetermined reference position are set. How to measure and recalculate the modified weight. 2. In order to accurately attach the wheel unbalance correction weight for an automobile to a specific optimum location on the rim radial inner surface of the wheel, the inner diameter of the location and the axial distance from a predetermined reference position are set. An unbalance correction device having a rod consisting of an angle measuring device and a length measuring device for measuring. 3. The unbalance correction device according to claim 2, wherein a balance weight mounting table is attached to the rod portion.