JP2870634B2 - Wheel compatibility test scale - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheel compatibility inspection scale for inspecting in advance whether or not a tire or a wheel fits properly in a wheel house of an automobile.

[0002]

2. Description of the Related Art It is important to check whether the tires and wheels used are suitable for the vehicle. This is because even if the size of the selected wheel is appropriate, the difference in the offset amount (misfit) may cause the wheel house to protrude outside or interfere with members inside.

Conventionally, tire and wheel manufacturers refer to a matching table created for each vehicle type based on past data to determine whether the size and offset amount are appropriate. However, when the model is different or the data is not yet prepared for a new car, there is a problem that it is necessary to take the dimensions one by one and to make a drawing and examine it.

[0006] As a peripheral technique, Japanese Utility Model Application Laid-Open No. 62-20
No. 889 has a device called a right angle ruler. However, this is only an instrument for measuring the damage or deformation state of the accident vehicle. That is, it is only possible to measure the dimensions of each part.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and its object is to determine in advance whether or not a tire or a wheel to be used is properly fitted in a wheel house of an automobile. The point is to make it easy to understand by inspection.

[0006]

In order to solve the above-mentioned problems, the present invention has an elongated scale body 10 having a length corresponding to the rim width of a wheel, and one of the scale bodies 10 is used as a reference point 11 of zero offset. The point from the point 11 to one end of the scale body 10 is defined as the inside of the wheel, and the other end is defined as the outside of the wheel. The inner scale 12 and the outer scale 13 are provided symmetrically on the other side.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The scale S of the present invention has an elongated scale body 10 having a length corresponding to the size of a wheel. The size of the wheel W is indicated by a numerical value representing the rim diameter and the distance (rim width) between the inner and outer rims Ri and Ro in inches, and the distance N between the wheel center line L and the inner surface M of the disc portion is determined. The offset amount is displayed in millimeters (see FIG. 3).

[0008] The rim diameter and the rim width can accurately grasp the usable range from the size of the tire mounted on the automobile. The offset amount (N) is, for example, a part P of the suspension, a caliper Q of the brake, or the like.
Relationship with members etc. located inside the wheel house T,
This is important for understanding how the tires fit into the wheel house T (see FIG. 4). However, as shown in FIG. 4, there is a problem that the above-described relationship and the like are very difficult to understand unless the wheel W is actually attached to the hub U and viewed.

Therefore, the scale S according to the present invention provides:
Understand the effects of differences in dimensions such as wheel offset before and after replacement. The scale body 10 is prepared for each size assuming that the entire length in the longitudinal direction represents the rim width, and the size (rim width) is displayed 14 at an appropriate place. For example, the smallest scale body 10 shown in FIG. 1 is of a 6 "(inch) rim width.

An appropriate point, such as substantially the center of the scale main body 10, is selected and set as a reference point 11 of zero offset. The position from the reference point 11 to one end is defined as, for example, the inside of the wheel, and the other is defined as the outside.
Is provided at an appropriate place. As a means for indicating the wheel offset amount (N), an inner scale 12 is provided on one side along the longitudinal direction from the reference point 11, and an outer scale 13 is provided on the other side.
Are provided symmetrically on one side of the main body. In the illustrated example, the inner scale 12 is minus (-), and the outer scale 13 is (+).
They are distinguished by adding the sign. Exemplary scales 12, 13
Is in millimeters, but may be displayed in inches or both.

In the illustrated embodiment, second scales 17 and 18 are provided on the other side of the scale body 10 with reference to the end. The second scales 17 and 18 are used for the purpose of measuring the gaps X ₁ , X ₂ ... Between the tire V and the wheel house T or the like.

Further, according to the present invention, a display means 20 is provided on the scale main body 10 to visually display the offset amount (N). This display means 20 is a mark 2
1 and a mark attaching portion 22 for enabling it to be arranged along the longitudinal direction of the main body. The mark attachment portion 22 may be formed in a slit shape as illustrated, or may be a number of small holes of the offset graduations 12 and 13, for example, many openings every 5 mm, and the mark 21 may be fitted into each hole.

The illustrated mark attachment portion 22 has a slit shape and is provided separately inward and outward (a single straight line may be continuous left and right). The mark 21 has a shaft portion 23 inserted into the slit, and a nut 24 is screwed into the screw portion so that the mark 24 can be stopped at an arbitrary position or can be moved along the slit (FIG. 5). reference).

[0014] The scale S thus configured has a rim R inside and outside the wheel corresponding to the size indication 14.
It fits exactly between i and Ro (see FIG. 4). Now, having a rim width of the wheel _{W 1} of 7.5 inches before the exchange, when the offset amount (N) is + 15 mm, when replacing this wheel _{W 2} having a rim width of 8.5 inches , The appropriate amount of offset (N) is considered.

A wheel W _{2 having} a large rim width by one inch
For 1 Inchirimu small wheel W ₁ width, direction in the offset amount is the same, projecting one inch outward together 2 minutes. If the gaps X ₁ , X ₂ … between the wheel W ₁ and the tire house before replacement can absorb this protrusion,
Hall W ₂ after the exchange may be the same offset amount as before. However, if the person during X _1-out inner gap can afford than between X _2-out outer gap is to reduce the offset amount it is possible to gather inwardly, between-out outer gap in the opposite X ₂ If there is room for the offset, the offset amount is increased. In any case, the amount of protrusion inward and outward can be predicted by viewing the _two scales S ₁ and S ₂ together.

If the type of newly selected wheel is limited, it is easy to check whether the wheel can be used for a specific automobile. In this case, assuming that the rim diameter and the rim width are appropriate, the offset amount is held on the scale S by the display means 20 or the like, and the position is adjusted to the inner surface M of the disk portion on the axle side. Gauze As a result, the gap-out between X ₂ and outer end and the wheel house outer of the gap-out between X ₁ and scale S between member located at an inner end and the wheel house or the house of the scale S is known, used Whether it is possible can also be grasped quite accurately.

[0017]

Since the present invention is constructed and operates as described above, it is determined whether or not the tire to be used and the wheel fit properly in the wheel house of the automobile by actually mounting the wheel to the hub U. Can be accurately predicted without looking at the wheel W
_1, the scale S ₁ that the size and offset of W ₂ is adapted to them knowing, also be matched to S ₂ can know whether or not some extent precisely available.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a set of a wheel compatibility test scale according to an embodiment of the present invention.

FIG. 2 is an enlarged plan view of a scale.

FIG. 3 is an explanatory diagram of a use state.

FIG. 4 is an explanatory cross-sectional view of a state in which the vehicle is attached to an automobile.

FIG. 5 is a sectional view showing an example of an offset amount display means.

Claims (3)

(57) [Claims] 1. A wheel compatibility inspection scale for inspecting in advance whether a tire or a wheel fits properly in a wheel house of an automobile, comprising a wheel rim.
It has an elongated scale main body 10 having a length corresponding to the width , and one of the scale main bodies 10 is used as a reference point 11 having an offset of zero.
1 to one end of the scale body 10 is inside the wheel and up to the other end is outside the wheel. As a means for indicating the amount of offset of the wheel, one side along the longitudinal direction from the reference point 11 A wheel compatibility inspection scale, wherein a scale 12 and an outer scale 13 are provided symmetrically on the other side. 2. The scale according to claim 1, wherein said offset amount display means (20) is provided on said scale body (10). 3. The main body 10 is provided on the other side of the scale main body 10.
2. The wheel suitability inspection scale according to claim 1, further comprising second scales 17, 18 based on the end of the wheel.