JPS6339441B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tire position regulating device that supports a wheeled tire by matching a bolt insertion hole of a wheel to a hub bolt of a vehicle body when the tire is mounted on a vehicle body.

In order to attach a tire with a wheel to a vehicle body, it is necessary to align bolt insertion holes provided in the wheel with hub bolts of the vehicle body, and then grasp and move the tire using a tire gripping device. However, in that case, the outer diameter, width, and
Since the size of the center hole of the wheel is different, it is extremely difficult to automatically position the tire accurately with respect to the position of the hub bolt.

The purpose of the present invention is to center a tire and accurately match the position of the bolt insertion hole of the wheel and the hub bolt of the vehicle body, so that even tires with different outer diameters and wheel center hole sizes can be used. It is an object of the present invention to provide a tire position regulating device that can accurately position a tire relative to a vehicle body.

Hereinafter, an example of implementation of the present invention will be described with reference to the accompanying drawings.

In FIG. 1, a tire mounted with a wheel 2 is supported by a tire support 3 in an upright state. The tire support 3 is provided with a roller 3a that supports one side of the tire and rollers 3b that place both sides of the lower part of the tire so that the tire 1 can rotate in the circumferential direction. . In addition, tire holder 3
is attached at its bottom to a vertical shaft 4 that can move in the vertical direction.

Furthermore, in order to stop the rotation of the tire 1 as necessary, the tire support 3 is equipped with a presser plate 7 that can press the tire against the rollers 3a by driving the cylinder 6. Note that the wheel 2 has a center hole 21
A bolt insertion hole 22 for inserting a hub bolt of a vehicle body (not shown) is provided at the same radial position centering on the center hole.

The center guide 5 is connected to the center hole 2 of the wheel 2.
It has a conical shape that tapers from the maximum diameter part to the tip. The center guide 5 is attached via a bearing to the tip of a rod 9 of a cylinder 8 that can slide toward the tire holder 3, and the center guide is moved by the cylinder 8 toward the center hole 21 of the wheel. By doing so, the tapered surface of the center guide 5 can be engaged with the center hole 21.
The cylinder 8 is supported by a vertical shaft 18 that is moved up and down by a drive unit (not shown), and its rod 9
is constructed so that it cannot rotate with respect to the cylinder 8.

Thus, the rod 9 of the cylinder 8 is provided with a gear portion 10a and a pin attachment portion 10b facing the gear portion.
A rotating body 10 integrally formed is attached via a bearing, and a gear portion 10a of the rotating body is configured to be rotated by a swing motor 12 via an intermediate gear 11.

A pin insertion hole is formed in the pin attachment portion 10b of the rotating body 10 at a position corresponding to a hub bolt of a vehicle body (not shown), and a bush 13 is inserted into the pin insertion hole.
By inserting the pins 14 through the center guide 5, two pins 14 are placed around the center guide 5 at a distance equal to the distance l between the center hole 21 of the wheel and the bolt insertion hole 22 from the axis of the center guide. They are installed respectively.

The pin 14 can be inserted into the bolt insertion hole 22 of the wheel, and is equipped with a resin body 15 at its tip. Moreover, this pin 14 is formed in a hollow shape that opens from the inside to the rear end, and has a flange part 14a at the rear end for giving a command to the detector 40 installed on the pin attachment part 10b of the rotating body. is forming. A coil spring 16 is interposed between the hollow interior of the pin 14 and the gear portion 10a of the rotating body, and its elastic force constantly urges the pin 14 in the direction of the tire support 3.

The swing motor 12 is fixed via a motor mounting plate 17 fitted to a stepped portion of the rod 9. The swing motor 12 has a rotating body 10
After being rotated to a desired angle, it is configured to be reversely driven and returned to its original position.

Therefore, the pin 14 can be rotated about the axis of the center guide 5 by the drive mechanism including the swing motor 12, the intermediate gear 11, and the rotating body 10.

That is, in the tire position regulating device of the present invention, when the center guide 5 is engaged with the center hole 21 of the wheel, the tip of the pin 14 hits the wheel 2, so that the pin compresses the coil spring 16 and retreats. By rotating the rotating body 10 by the swing motor 12, the pin 14 is inserted into the bolt insertion hole 22 of the wheel, and this state is detected by the detector 40 and the swing motor 12 is automatically turned on. The pin 14 is returned to its original position by reverse driving, thereby arranging the bolt insertion hole 22 of the wheel at a position corresponding to the hub bolt of the vehicle body.

The tire position regulating device of the present invention is constructed as described above, and its operation will be described next.

Tire 1 is inserted from above and placed in tire receiver 3.
is supported in an upright position. Although there are differences in the outer diameter of the tire 1, as shown in FIG. 2, the center holes 21a and 21b of the wheels of the large-diameter tire 1a and the small-diameter tire 1b have a common hole portion A that is common to each other. Since there is a vertical axis 1 in the common hole A,
8 to position the center guide 5.
Then, by driving the cylinder 8, the tip of the center guide 5 is inserted into the shared hole A, and is temporarily stopped.

At this time, the large diameter tire 1a is attached to the center guide 5.
Since it interferes with the tire holder 3, the vertical shaft 4
By lowering , the large diameter tire 1a is positioned at a position centered on the axis of the center guide 5. Next, the center guide 5 is further advanced to engage the tapered surface of the center guide with the wheel center hole 21, thereby centering the tire.
In addition, in the case of a small diameter tire 1b, the center guide 5 will float when inserted, so the center guide 5
Centering of the tire can be performed only by moving the wheel forward.

When the center guide 5 is engaged with the center hole 21 of the wheel as described above, the probability that the bolt insertion hole 22 of the wheel will be located at a position corresponding to the pin 14 is low. Therefore, the tip of the pin 14 (that is, the resin body 15) hits the wheel 2, so the pin 14 compresses the coil spring 16 and retreats.
Since the pin flange 14a is separated from the detector 40,
The detector 40 can detect that the pin 14 hits the wheel 2.

Then, the swing motor 12 is driven in accordance with a command from the detector 40, and the pin 14 is rotated via the intermediate gear 11 and the rotating body 10. Then, when the pin 14 matches the bolt insertion hole 22 of the wheel, the pin 14 is inserted into the bolt insertion hole 22 by the elastic restoring force of the coil spring 16, and this state is detected by the detector 40.

Then, the rotating body 10 is reversely driven by the rotation angle by the swing motor 12, and the pin 14 returns the bolt insertion hole 22 of the wheel to the position corresponding to the hub bolt of the vehicle body, thereby positioning the tire 1. Thereafter, the tire 1 is held by moving the presser plate 7 using the cylinder 6. Note that when the pin 14 is rotated with the pin 14 in contact with the wheel 2, the tire 1 can be held down by the holding plate 7 so that the tire 1 does not also rotate.

In this manner, the present invention can accurately position the bolt insertion hole 22 of the wheel relative to the hub bolt of the vehicle body after centering the tire 1 automatically. Furthermore, since the center guide 5 is formed into a conical shape, accurate centering can always be performed regardless of the size of the center hole 21.

In the illustrated embodiment, the center guide 5 is movable in the direction of the tire holder 3 by the cylinder 8, but the position of the center guide is fixed and the tire holder 3 is moved in the direction of the center guide. You can also move it to Further, although an example has been shown in which the pin 14 is rotated around the axis of the center guide 5, it is also possible to rotate the tire 1 around the axis of the center guide.

As described above, the present invention enables automatic and accurate tire positioning, which has been extremely difficult in the past, and thus enables automatic tire mounting.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the main parts of an embodiment of the tire position regulating device of the present invention, and FIG. 2 is an explanatory diagram showing the difference between a small diameter tire and a large diameter tire. 1... Tire, 2... Wheel, 21... Center hole, 2
2... Bolt insertion hole, 3... Tire holder, 5... Center guide, 8... Cylinder, 10... Rotating body, 11... Intermediate gear, 12... Rocking motor, 14... Pin, 16...
coil spring. 10b...pin attachment part, 40...
Detector.

Claims (1)

[Claims] 1 A tire position regulating device that supports a tire with a wheel mounted thereon by a tire support means and positions a bolt insertion hole provided in the wheel so as to face the tip of a hub bolt of a vehicle body disc, the tapered and maximum diameter portion being a center guide having a conical shape larger than the diameter of the center hole; a tire support means for rotatably supporting the tire around the axis of the center guide; at least one pin disposed at a distance equal to the distance between the center hole of the wheel and the bolt insertion hole and insertable into the bolt insertion hole, and the pin is aligned with the axis of the center guide. a pin attachment part that supports the pin so as to be slidable in parallel directions; an elastic support member that always biases the pin in the direction of the tire support means with respect to the pin attachment part; and the pin attachment part of the pin. a detector for detecting deviation with respect to the center guide; a moving means for moving either the center guide or the tire support means forward or backward; and rotating either the pin or the tire about the axis of the center guide. A tire position regulating device comprising: a drive mechanism for controlling the position of a tire;