JP4010695B2 - Dynamic balance measurement method for tire tube with sealant - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for measuring a dynamic balance of a tire tube with a sealant that measures a single dynamic balance of a tire tube with a sealant using a dynamic balance measuring device that measures a dynamic balance while rotating a wheel.
[0002]
[Prior art]
Sealing agent that fills the inside of the sealing agent chamber formed on the outer periphery of the tire tube in advance and delays the outflow of air by repairing the stab with the sealing agent when the tire tube is stabbed by a nail or the like Entered tire tubes are known (see, for example, JP-A-8-222502).
[0003]
[Problems to be solved by the invention]
A wheel equipped with a conventional tire tube not containing a sealant can adjust its dynamic balance by adjusting its static balance, while a wheel fitted with a tire tube containing a sealant is able to adjust its static balance. There is a problem that even if the balance is adjusted, the dynamic balance is not adjusted. This is because the sealant-filled tire tube stored in a non-use state is not uniformly distributed in the circumferential direction because the sealant filled in the sealant chamber moves downward due to gravity. Therefore, even if the static balance of the wheel equipped with the tire tube with the sealant is adjusted and the dynamic balance is substantially taken at that time, the sealant chamber is filled when the vehicle actually travels and the wheel rotates. This is because the seal balance becomes uniform in the circumferential direction due to centrifugal force, and the adjusted dynamic balance is lost. In the case of a wheel fitted with a tire tube with a sealant in this way, it is meaningless to adjust the static balance, so the wheel is actually rotated and the sealant is evenly distributed in the circumferential direction by centrifugal force. It is necessary to adjust the dynamic balance while spreading.
[0004]
By the way, tire tubes with sealant may be sold separately at dealers, and measuring the dynamic balance every time the tire tube with sealant is assembled to tires and wheels is a problem for the dealer's equipment. It is practically difficult. Therefore, if the dynamic balance of the tire tube with sealant is measured and adjusted in advance, when the tire tube with sealant is assembled to a tire and a wheel, the dynamic balance of the entire wheel may be lost. Can be prevented.
[0005]
However, a commercially available dynamic balance measuring device has a structure for measuring the dynamic balance of a wheel in which a tire tube is assembled to a tire and a wheel. It was not possible to measure with a dynamic balance measuring device.
[0006]
This invention is made | formed in view of the above-mentioned situation, and it aims at enabling it to measure the dynamic balance as a single-piece | unit of the tire tube containing a sealing agent with a commercially available dynamic balance measuring apparatus.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, according to the invention described in claim 1, the dynamic balance of a tire tube containing a sealant is measured using a dynamic balance measuring device that measures the dynamic balance while rotating the wheel. A method for measuring the dynamic balance of a tire tube containing a sealant, wherein the tire tube containing a sealant is attached to a tire jig whose dynamic balance has been adjusted in advance, and the tire jig is attached to a wheel jig whose dynamic balance has been adjusted in advance. A dummy wheel is formed, and the dynamic balance of the dummy wheel is measured by using a dynamic balance measuring device to measure the dynamic balance of the tire tube with the sealant, and the tire tube with the sealant A dynamic balance measurement method is proposed.
[0008]
According to the above configuration, a dummy wheel is configured by assembling a tire tube with a sealant to a tire jig whose dynamic balance has been adjusted in advance and a wheel jig whose dynamic balance has been adjusted in advance, and measuring the dynamic balance of the dummy wheel. Thus, it becomes possible to measure the dynamic balance of a single tire tube containing a sealant using a commercially available dynamic balance measuring device.
[0009]
According to the invention described in claim 2, in addition to the configuration of claim 1, one of the pair of flanges that contact the bead portion of the tire jig can be attached to and detached from the wheel jig. A method for measuring a dynamic balance of a tire tube with a sealant is proposed, in which the tire jig is attached to and detached from the wheel jig in a state where the tire jig is removed.
[0010]
According to the above configuration, since the tire jig is attached to and detached from the wheel jig with one of the pair of flanges of the wheel jig removed, the tire jig can be easily attached and detached, and the tire tube containing the sealant is a single unit. It is possible to measure the dynamic balance in a short time.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described based on examples of the present invention shown in the accompanying drawings.
[0012]
1 to 5 show an embodiment of the present invention. FIG. 1 is a sectional view of a wheel equipped with a tire having a tire tube containing a sealant, and FIG. 2 is an overall perspective view of a dynamic balance measuring device. 3 is a three-direction enlarged arrow view of FIG. 2, FIG. 4 is a sectional view taken along line 4-4 of FIG. 3, and FIG. 5 is an explanatory view of a method for adjusting the dynamic balance of the tire tube containing the sealant.
[0013]
First, the structure of a tire tube with a sealant will be described with reference to FIG.
[0014]
A rim R of a motorcycle wheel is fitted with a tire T with a tube comprising a tire body 1 and a tire tube 2 with a sealant housed therein. The tire tube 2 with a sealant includes an air chamber peripheral wall 3i positioned on the radially inner side and a sealant chamber peripheral wall 3o positioned on the radially outer side, and includes a peripheral wall 3 formed in an annular cross section. A pair of connecting portions connecting the air chamber peripheral wall 3i and the sealant chamber peripheral wall 3o of the peripheral wall 3 are connected to each other by a partition wall 4 formed integrally therewith.
[0015]
The air chamber 5 having a substantially circular cross section defined between the air chamber peripheral wall 3i and the partition wall 4 is filled with air, and has a substantially arc-shaped cross section defined between the sealant chamber peripheral wall 3o and the partition wall 4. The sealant chamber 6 is filled with a known liquid sealant 7.
[0016]
The rim R includes an annular rim main body portion 11 extending in the circumferential direction of the tube-equipped tire T, and a pair of flanges 12 and 12 that extend radially outward from both ends in the width direction of the rim main body portion 11 to hold the inner periphery of the tire 1. With. The air valve 13 that fills the air chamber 5 formed in the tire tube 2 containing the sealant with air is supported by penetrating the air valve mounting portion 14 formed at one place in the circumferential direction of the rim main body portion 11. .
[0017]
Since the sealant chamber 6 of the tire tube 2 containing the sealant is held in a shape along the inner surface of the tire body 1 by the air pressure of the air chamber 5, the sealant 7 filled in the sealant chamber 6 is centrifuged by rotation of the wheel. Even if force acts, it can prevent that the sealing agent 7 shifts to the outer peripheral side of the tire tube 2 containing a sealing agent. Therefore, even if the tire tube 2 containing the sealant is stabbed from the radial direction or the side by a nail or the like, the sealant 7 immediately fills and repairs the stab and delays the leakage of air from the air chamber 5.
[0018]
As shown in FIG. 2, a commercially available dynamic balance measuring device 21 for measuring the dynamic balance of a wheel is fixed by rotating a dummy wheel 23, which will be described later, on a rotating shaft 22 protruding on one side thereof, Dynamic balance is measured.
[0019]
As is apparent from FIGS. 3 and 4, the dummy wheels 23 which was assembled tire jig 24 and the wheel jig 25 in the sealing agent mixed tire tube 2, the rotation shaft hole 25 ₅ of the wheel fixture 25 The shaft 22 is fitted and fixed with a nut 26.
[0020]
A rubber tire jig 24 to which the tire tube 2 containing the sealant is attached has the same shape as a normal tire, and its dynamic balance is adjusted in advance. Although a normal tire can be used as it is as the tire jig 24 without specially manufacturing the tire jig 24, it is necessary to adjust its dynamic balance in advance. A metal wheel jig 25 to which the tire jig 24 is mounted includes a disc-shaped wheel main body 25 ₁ , a rim portion 25 ₂ formed integrally with the outer peripheral surface of the wheel main body 25 ₁ , and the rim portion 25. ₂ has a flange 25 ₃ formed integrally on one side, and a flange 25 ₄ detachable by three bolts 27 on the other side of the rim portion 25 ₂ , and its dynamic balance is adjusted in advance. ing.
[0021]
In order to measure the dynamic balance of the tire tube 2 with the sealant, the tire tube 2 with the sealant is mounted in the tire jig 24 and then fixed to the rotating shaft 22 of the dynamic balance measuring device 21 with a nut 26 in advance. By mounting the tire jig 24 on the wheel jig 25, the dummy wheel 23 including the tire tube 2 with the sealant, the tire jig 24, and the wheel jig 25 is assembled. At this time, simply removing one flange 25 ₄ of the wheel jig 25 enables the tire jig 24 to be moved in the direction of the arrow in FIG. 4 to be attached to and detached from the wheel jig 25, contributing to a reduction in work time. can do.
[0022]
When the dummy wheel 23 is mounted on the dynamic balance measuring device 21 in this way, the dynamic balance is measured by rotating the dummy wheel 23 together with the rotating shaft 22. At this time, since the dynamic balance of the tire jig 24 and the wheel jig 25 is adjusted in advance, the detected unbalance is caused by the tire tube 2 containing the sealant. Therefore, as shown in FIG. 5, a balance weight 28 (for example, a rubber sheet) in an amount capable of adjusting the dynamic balance of the entire dummy wheel 23 is attached to a predetermined position of the tire tube 2 with the sealant, thereby containing the sealant. The dynamic balance of the tire tube 2 can be adjusted.
[0023]
As described above, it is possible to efficiently measure and adjust the dynamic balance of the tire tube 2 with the sealant using the commercially available dynamic balance measuring device 21. Thus, if the dynamic balance of the tire tube 2 with the sealant sold as a single unit is adjusted in advance, it is possible to prevent the dynamic balance of the wheel assembled with the tire tube 2 with the sealant from being lost.
[0024]
As mentioned above, although the Example of this invention was explained in full detail, this invention can perform a various design change in the range which does not deviate from the summary.
[0025]
【The invention's effect】
As described above, according to the invention described in claim 1, a dummy wheel is configured by assembling a tire tube containing a sealant to a tire jig whose dynamic balance has been adjusted in advance and a wheel jig whose dynamic balance has been adjusted in advance, By measuring the dynamic balance of this dummy wheel, it becomes possible to measure the dynamic balance of a single tire tube containing a sealant using a commercially available dynamic balance measuring device.
[0026]
According to the invention described in claim 2, since the tire jig is attached to and detached from the wheel jig with one of the pair of flanges of the wheel jig being removed, the attachment and detachment work of the tire jig is facilitated. It is possible to measure the dynamic balance of a single tire tube with a sealant in a short time.
[Brief description of the drawings]
1 is a cross-sectional view of a wheel equipped with a tire having a tire tube containing a sealant. FIG. 2 is an overall perspective view of a dynamic balance measuring device. FIG. 3 is a three-direction enlarged arrow view of FIG. Sectional view taken along line 4-4 in Fig. 3 [Fig. 5] An illustration of a method for adjusting the dynamic balance of a tire tube with a sealant
2 Tire tube with sealant 21 Dynamic balance measuring device 23 Dummy wheel 24 Tire jig 24 ₁ Bead part 25 Wheel jig 25 ₃ Flange 25 ₄ Flange

Claims (2)

A method for measuring a dynamic balance of a tire tube with a sealant that measures a single dynamic balance of a tire tube with a sealant (2) using a dynamic balance measuring device (21) that measures a dynamic balance while rotating a wheel,
A tire tube (2) containing a sealant is attached to a tire jig (24) whose dynamic balance has been adjusted in advance, and the tire jig (24) is mounted to a wheel jig (25) whose dynamic balance has been adjusted in advance. The dummy wheel (23) is configured, and the dynamic balance of the dummy wheel (23) is measured using the dynamic balance measuring device (21) to measure the single dynamic balance of the tire tube (2) containing the sealant. A method for measuring a dynamic balance of a tire tube with a sealant, characterized by: _{One of a} pair of flanges (25 ₃ , 25 ₄ ) contacting the bead portion (24 ₁ ) of the tire jig (24) is detachable from the wheel jig (25), and the one flange (25 ₄ ) is attached to the wheel jig (25). The method for measuring the dynamic balance of a tire tube with a sealant according to claim 1, wherein the tire jig (24) is attached to and detached from the wheel jig (25) in a detached state.

Images