JP4324659B2 - Seal structure of B type lateral loading wheel - Google Patents

Description

  The present invention relates to a sealing structure (a tire inner space) of a lateral loading wheel for loading a tire on a rim from a lateral direction, in particular, a lateral loading wheel having a side ring that is detachable from the rim and has a bead seat formed on the outer periphery. Sealing structure from the outside).

The present applicant has proposed the following two types of lateral loading wheels (comparative example) A-type and B-type (Japanese Patent Laid-Open No. 2003-211905).
[Type A]
As shown in FIGS. 10 to 13, the A-type lateral loading wheel is a wheel of a type in which only the lateral force of the tire is supported by the side ring 21 (a type in which a tire bead rides on a rim). The 5 degree taper surface 22 that supports the longitudinal force is formed on the rim 23 side. The side ring 21 is pushed into the rim 23 and rotated about the axis until the stopper of the side ring 21 and the stopper of the rim 23 are engaged in the axial direction.
The A-type lateral loading wheel is air-sealed at the contact surface between the tire bead and the 5-degree taper surface, and additionally the O-ring 24 seal is added, so the air seal is doubled and the seal reliability is very high. Is expensive. According to the test, no air leaks even if left for a long time without O-ring.
[B type]
As shown in FIGS. 14 to 18, the B-type lateral loading wheel is a wheel of a type that supports both the lateral force and the longitudinal force of the tire by the side ring 31 (a type in which the tire bead rides on the side ring). A 5-degree taper surface 32 that supports the longitudinal force is formed on the side ring 31. The side ring 31 is pushed into the rim 30 and rotated about the axis until the stopper of the side ring 31 and the stopper of the rim 30 are engaged in the axial direction.
In the B-type lateral loading wheel, the seal is entrusted only to the O-ring 33, and the O-ring 33 is required to be reliable. The O-ring 33 of the B-type lateral loading wheel cannot be disposed at a position where it can be seen from the outside for aesthetic reasons when the side ring 31 is disposed on the outer side (A1 side) of the wheel in the vehicle left-right direction. It is arranged at (a portion between the side ring 31 and the rim 30).

However, when the O-ring 33 is disposed inside the side ring 31 in the B-type lateral loading wheel, the following problems (i), (b), (c), and (d) occur.
(A) If the diameter of the O-ring 33 is large, the radial width of the fitting portion structure portion is increased. If the width of the fitting portion structure portion is large, it is necessary to increase the thickness in terms of strength, and the wheel becomes heavy accordingly. As a result, the diameter of the O-ring 33 cannot be increased so much that there is a problem with the reliability of the seal.
(B) As shown in FIGS. 14 to 18, the air seal of the B-type lateral loading wheel is pushed in until the seal portion protrusion 34 of the side ring 31 gets over the O-ring 33, and the side ring 31 is inserted at that position. Turn to lock the side ring stopper and rim stopper in the axial direction. Thereafter, the projection 34 of the seal portion is bitten into the O-ring 33 by a return force by tire air pressure (AP, Air Pressure), and the seal function is designed. In this type, since the pushing force when the projection 34 gets over the O-ring 33 is reduced, the interference between the O-ring 33 and the projection 34 cannot be made too large, and as a result, there may be a problem in sealing performance.
(C) It is difficult to remove the tire 35. As shown in FIG. 17, the tire 35 is removed as follows: a) After removing the air, the tire 35 attached to the side ring 31 is peeled off.
b) Push in the side ring 31 to drop the O-ring 33 into the groove 36.
c) Turn the side ring 31 to release the axial lock.
d) Remove the side ring 31 and remove the tire 35.
The rubber O-ring 33 sticks to the side ring 31 and the rim 30 if it is pressed for a long time. Therefore, the pushing force in step b) and the capping force in c) are heavy and the work is performed. There is a problem that it is difficult.
(D) Steps b) and c) cannot be performed because muddy water enters the gap 37 between the seal positions and travels while the vehicle is running, and is fixed by solid mud, frozen and fixed at low temperatures. .
JP 2003-211905 A

The problem to be solved by the present invention is the above-mentioned problems (i), (b), (c), and (d) in the B-type lateral loading wheel of the comparative example.
An object of the present invention is to provide a seal structure of an improved B-type lateral loading wheel (hereinafter simply referred to as a B-type lateral loading wheel) that has good sealing properties and good O-ring attachment / detachment.

The present invention for achieving the above object is as follows.
(1) B having a rim, a side ring that is detachably attached to the rim and has a bead seat formed on an outer peripheral surface , and an O-ring on which tire air pressure is applied to seal between the rim and the side ring. A laterally loading wheel seal structure, wherein the O-ring is disposed at an axially outer end position of the side ring;
A rim stopper is formed on the rim, and an O-ring groove is provided on the outer side in the wheel axial direction from the rim stopper of the rim. An O-ring is fitted into the O-ring groove of the rim to apply tire air pressure to the side ring, and the O-ring. The O-ring is sandwiched between a seal surface that contacts the O-ring on the groove surface of the groove and an O-ring pressing surface that contacts the O-ring on the outer side in the axial direction and on the inner side in the radial direction of the side ring, A gap between the seal surface of the O-ring groove and the O-ring pressing surface of the side ring that opens to the outside in the radial direction for attaching and detaching the O-ring to and from the O-ring groove in a state where no tire air pressure is applied. A seal structure of a B-type lateral loading wheel formed .
(2) The seal structure for the B-type lateral loading wheel according to (1), wherein the O-ring is disposed at a rim end on the inner side in the vehicle left-right direction.
(3) pre-Symbol the side ring stopper is formed on the side ring, said Rimusutoppa and the side of the ring stopper measured the stopper from the rim of the side rings are engaged with the axial direction of the wheel (1) B type, wherein Horizontal loading wheel seal structure.
( 4 ) The seal of the B-type lateral loading wheel according to ( 1 ), wherein the seal surface of the O-ring groove and the O-ring pressing surface of the side ring form a taper that tapers toward the outer side in the wheel axial direction. Construction.
( 5 ) The seal structure of the B-type lateral loading wheel according to ( 4 ), wherein an angle formed between the seal surface of the O-ring groove and the O-ring pressing surface of the side ring is 5 to 60 degrees.
( 6 ) At least one of the sealing surface of the O-ring groove and the O-ring pressing surface of the side ring is a concave curved surface, and the sealing surface of the O-ring groove and the O-ring pressing surface of the side ring ( 1 ) The sealing structure of the B-type lateral loading wheel according to ( 1 ), wherein the distance from the center decreases toward the outer side in the wheel axis direction from the center of the O-ring.

According to the seal structure of the B-type lateral loading wheel of the above (1), (2), and (3), since the O-ring is arranged at the outermost end position in the axial direction of the side ring, Without increasing the size, the diameter of the O-ring can be increased to improve the sealing performance, and the above problem (A) can be solved. Further, the arrangement of the outer end of the O-ring can suppress the entry of muddy water into the gap and the stopper engaging portion, and there is no sticking of the side ring to the rim due to the mud, thereby solving the above problem (d). As a result, it is possible to provide a sealing structure for a B-type lateral loading wheel that has good sealing performance and good O-ring attachment / detachment.
According to the seal structure of the B-type lateral loading wheel of ( 1 ) above, there is no need to get over because there is no O-ring when the side ring is pushed in, and even if a thick O-ring is used, there is no concern that the pushing force will become heavy. Thereby, the above problem (b) can be solved. Moreover, since the O-ring can be peeled from the outside when the side ring is removed, there is no fear of the o-ring falling into the O-ring groove due to sticking of the O-ring, and the turning force of the side ring does not increase. Thereby, the above problem (c) can be solved. As a result, it is possible to provide a sealing structure for a B-type lateral loading wheel that has good sealing performance and good O-ring attachment / detachment.
According to the seal structure of the B-type lateral loading wheel of ( 4 ) to ( 6 ) above, the distance between the seal surface of the O-ring groove and the O-ring pressing surface of the side ring tapers as it goes outward in the wheel axial direction. Therefore, it is possible to prevent the O-ring from coming off to the atmosphere side when the tire internal pressure is applied, and to prevent the O-ring caused by mud, stone, etc. through the gap between the seal surface of the O-ring groove and the O-ring pressing surface of the side ring. Damage to the ring is suppressed, and the reliability of the seal structure is improved.

The seal structure of the B-type lateral loading wheel of the present invention will be described with reference to FIGS.
1 to 5 show Embodiment 1 of the present invention, FIGS. 6 and 7 show Embodiment 2 of the present invention, FIG. 8 shows Embodiment 3 of the present invention, and FIG. 9 shows an embodiment of the present invention. 4 is shown. Portions that are common throughout the first to fourth embodiments of the present invention or have similar structures are denoted by the same reference numerals throughout the first to fourth embodiments of the present invention.

First, the part which is common in Examples 1-4 of this invention or has a similar structure is demonstrated with reference to FIGS. However, as shown in FIG. 1, the vehicle left-right direction outer side of a wheel is set to A1 side, and the vehicle left-right direction inner side of a wheel is set to A2 side.
The B-type lateral loading wheel to which the seal structure of the B-type lateral loading wheel of the present invention is applied has a flange in one end in the wheel axial direction (desirably, the inner side A2 end in the vehicle left-right direction) or both ends (the A1 side end and the A2 side end). Has a side ring structure that can be attached to and detached from the rim 2, and the side ring 1 is removed from the rim 2, and the tire 5 (or a run-flat core and a tire) may be removed from the lateral direction (axial direction) of the rim 2. A wheel that can be loaded.
In the B-type lateral loading wheel, the side ring 1 has a bead seat surface 3 on which the tire bead is seated on the outer peripheral surface of the side ring 1 (the tire bead seat rides on the side ring 1). The rim 2 extends straight or substantially straight in parallel or substantially parallel to the wheel axis and does not have a drop portion (drop portion restrim). The side ring 1 is attached to and detached from the rim 2 by providing the side ring 1 and the rim 2 with stoppers 6 and 7 (side ring stopper 6 and rim stopper 7) each having a convex portion that engages with each other in the wheel axial direction. The stopper 6 and the rim stopper 7 are provided with notches 12 and 13 in a part in the circumferential direction, the side ring stopper 6 is passed through the rim stopper 7 through the notch 13 of the rim stopper 7, and the side ring 1 is moved to the wheel at the passing position. When the tire inner pressure is applied to the side ring 1, the side ring stopper 6 is engaged with the rim stopper 7 in the wheel axial direction when the tire internal pressure is applied to the rim 2, and the side ring 1 is axially moved from the rim 2. It is structured to lock so as not to come off.

The seal structure of the B-type lateral loading wheel of the present invention includes a rim 2, a side ring 1 that can be attached to and detached from the rim 2, and a bead seat 3 is formed on the outer peripheral surface, and a space between the rim 2 and the side ring 1. And an O-ring 4 to be sealed.
In the sealing structure of the B-type lateral loading wheel of the present invention, the O-ring 4 is disposed at the axially outer end position of the side ring 1 (side ring end position in the direction away from the wheel width direction center in the wheel axial direction). ing. The O-ring 4 is made of, for example, a rubber or resin O-ring.
The O-ring 4 is disposed at the rim end on the side where the side ring 1 is disposed. Therefore, when the side ring 1 is disposed at the rim end portion on the inner side in the vehicle left-right direction, the O-ring 4 is disposed at the rim end portion on the inner side in the vehicle left-right direction. When the O-ring 4 is disposed at the rim end on the inner side in the vehicle left-right direction, the O-ring 4 cannot be seen from the left and right outer sides of the vehicle, so that the aesthetics are improved.

In the structure in which the O-ring 4 is attached to seal the tire interior space from the outside (atmosphere), an O-ring groove 9 is provided on the outer side in the wheel axial direction from the rim stopper 7 of the rim 2. And the tire ring AP (Air Pressure) is applied to the side ring 1, the seal surface 10 contacting the O-ring 4 on the groove surface of the O-ring groove 9, and the axially outer side and the radially inner side of the side ring 1. The seal structure is configured such that the O-ring 4 is sandwiched between and sealed with the O-ring pressing surface 11 in contact with the O-ring 4. (Figure 2)
The rim 2 is formed with an extending portion 8 extending outward in the wheel axis direction from the side ring 1, and the O-ring groove 9 is formed on the extending portion 8 of the rim 2 and / or the side ring mounting portion of the rim 2. Is formed. The sealing surface 10 is an inclined surface that rises obliquely from the groove bottom surface of the O-ring groove 9 and inclines so as to spread outward in the wheel radial direction as it approaches the rim end in the wheel axis direction. The outer side in the wheel axis direction is the direction away from the wheel width direction central portion in the wheel axis direction. Therefore, when the side ring 1 is at the inner side end (A2 side end) of the rim 2 When the side ring 1 is at the vehicle lateral direction outer side end (A1 side end) of the rim 2 corresponding to the lateral direction inner side (A2 side), the wheel axial direction outer side corresponds to the vehicle lateral direction outer side (A1 side) of the wheel. .

  The seal surface 10 of the O-ring groove 9 and the O-ring pressing surface 11 of the side ring 1 are for attaching and detaching the O-ring 4 to and from the O-ring groove 9 in a state where the tire air pressure AP (Air Pressure) is not applied (FIG. 3). The clearance gap 14 opened to the outside in the radial direction is formed (FIG. 3). The O-ring pressing surface 11 of the side ring 1 can move a little in the wheel axial direction with respect to the sealing surface 10 of the O-ring groove 9, and thereby the O-ring pressing of the sealing surface 10 of the O-ring groove 9 and the side ring 1. The distance between the gap 14 and the surface 11 changes slightly. When the air pressure AP is applied to the tire (FIG. 2), the gap 14 between the seal surface 10 of the O-ring groove 9 and the O-ring pressing surface 11 of the side ring 1 is narrower than the air-released state (FIG. 3). The O-ring 4 is pressed to deform the cross section of the O-ring 4, the gap 14 is sealed, and the tire inner space is blocked from the outside (atmosphere).

The procedure for attaching and detaching the O-ring 4 is as follows, as shown in FIG.
[Installation procedure]
1) Each component is prepared, and the tire 5 is disposed on the inner side in the wheel axial direction of the side ring 1 (side closer to the wheel center).
2) Insert the side ring 1 and the tire 5 into the rim 2. If there is a run-flat core, insert it at the same time.
3) The side ring 1 is rotated to a predetermined position, and the convex portion (side ring stopper) 6 and the convex portion (rim stopper) 7 are engaged and locked in the axial direction.
4) Insert the O-ring 4 into the O-ring groove 9.
5) Pour air into the tire and move the side ring 1 to the outside in the wheel axis direction (the side far from the wheel center) with the air pressure AP to bite the side ring 1 into the O-ring 4.
[Removal procedure]
Reverse order of wearing. That is,
1) Vent the air and remove the tire beads from the side ring 1.
2) Remove the attached O-ring 4 and remove it from the O-ring groove 9 and remove it.
3) Turn the side ring 1 to disengage the convex portion (side ring stopper) 6 and the convex portion (rim stopper) 7 in the axial direction.
4) Remove the side ring 1 together with the tire.
5) Remove the tire 5 from the rim 2.

With the above configuration, the following actions and effects can be obtained.
Since the O-ring 4 is disposed at the outermost end position in the axial direction of the side ring 1, the fitting portion structure width (radial thickness) is not so large as compared with the structure of the comparative example of FIGS. 15 and 16. The diameter of the ring 4 can be increased to improve the sealing performance, and the above problem (A) can be solved.
Further, due to the arrangement of the outer end of the O-ring 4, muddy water does not enter the gap between the side ring 1 and the rim 2 and the mud does not adhere to the rim 2 due to mud. ) Can be solved. As a result, it is possible to provide a sealing structure for a B-type lateral loading wheel that has good sealing performance and good O-ring 4 attachment / detachment.

2 and 3, there is no O-ring 4 when the side ring is pushed in, so there is no need for the side ring 1 to get over the O-ring 4, and even if a thick O-ring 4 is used, the side ring is pushed. There is no concern of increasing power. As a result, the above-mentioned problem (b) can be solved.
Further, since the O-ring 4 can be peeled from the outside when the side ring is removed, there is no fear of peeling failure due to sticking of the O-ring 4 and the turning force of the side ring 1 does not become heavy. As a result, the above-mentioned problem (c) can be solved. As a result, it is possible to provide a sealing structure for a B-type lateral loading wheel that has good sealing performance and good O-ring 4 attachment / detachment.

Next, configurations, operations, and effects unique to each embodiment of the present invention will be described.
[Example 1]
In Example 1 of the present invention, as shown in FIGS. 1 to 5, the seal surface 10 of the O-ring groove 9 and the O-ring pressing surface 11 of the side ring 1 are substantially parallel, and the O-ring attachment / detachment direction (radial direction). In order to prevent the O-ring 4 from coming off when the tire internal pressure is applied to the O-ring 4, the O-ring pressing surface 11 of the side ring 1 is made to bite into the O-ring 4. In the first embodiment of the present invention, an O-ring 4 having a large cross-sectional diameter (for example, a diameter of 9 mm) is used. The axially engaging portion between the convex portion (stopper) 6 of the side ring 1 and the convex portion (stopper) 7 of the rim 2 is axially outer than the tire lateral pressure receiving surface 15 of the side ring 1 (the side far from the center in the wheel width direction). ) Is desirable. The length in the wheel axial direction of the convex portion (stopper) 6 of the side ring 1 is shorter than the axial length of the bead sheet 3 and is ½ or less of the length of the bead sheet. Further, as shown in FIG. 4, the screw 16 may be extended from the inner surface of the rim 2 in the rim radial direction and screwed into the convex portion (stopper) 6 of the side ring 1 to prevent the side ring 1 from rotating. In that case, it is necessary to arrange the seal member 17 between the head of the screw 16 and the inner surface of the rim to seal the tire inner space.
The operation and effect of the first embodiment is that the thick O-ring 4 can be used, so that the sealing performance is good, and the screw hole is sealed by providing the seal member 17 even if the rotation prevention by the screw 16 is attempted. The airtightness in the tire 5 is maintained.

[Example 2]
In Example 2 of the present invention, as shown in FIGS. 6 and 7, the seal surface 10 of the O-ring groove 9 and the O-ring pressing surface 11 of the side ring 1 are substantially parallel, and the O-ring attachment / detachment direction (radial direction). In order to prevent the O-ring 4 from coming off when the tire internal pressure is applied to the O-ring 4, the O-ring pressing surface 11 of the side ring 1 is made to bite into the O-ring 4. In the second embodiment of the present invention, an O-ring 4 having a narrow cross-sectional diameter (for example, a diameter of 7 mm) is used, and the axial relationship between the convex portion (stopper) 6 of the side ring 1 and the convex portion (stopper) 7 of the rim 2 is used. It is desirable that the joint portion is on the inner side in the axial direction (side closer to the center in the wheel width direction) than the tire lateral pressure receiving surface 15 of the side ring 1. The length in the wheel axial direction of the convex portion (stopper) 6 of the side ring 1 is long and is ½ or more of the length in the wheel axial direction of the bead seat 3. The cross-sectional shape of the side ring 1 is thicker than the cross-sectional shape of the side ring 1 of Example 1, and the strength is large.
The operation and effect of the second embodiment is that the strength of the side ring 1 is large.

Example 3
In Embodiment 3 of the present invention, as shown in FIG. 8, the seal surface 10 of the O-ring groove 9 spreads outward in the wheel radial direction as it approaches the rim end in the wheel axial direction at the groove bottom surface of the O-ring groove 9. It is comprised from the inclined surface which inclines.
The seal surface 10 of the O-ring groove 9 and the O-ring pressing surface 11 of the side ring 1 are non-parallel to each other and are substantially straight inclined surfaces. The seal surface 10 of the O-ring groove 9 and the O-ring pressing surface 11 of the side ring 1 form a taper that tapers toward the outer side in the wheel axis direction. As a result, the distance between the seal surface 10 of the O-ring groove 9 and the O-ring pressing surface 11 of the side ring 1 is reduced toward the atmosphere side (as it goes to the atmosphere side).
The angle θ formed by the seal surface 10 of the O-ring groove 9 and the O-ring pressing surface 11 of the side ring 1 is desirably 5 to 60 degrees, and more desirably 5 to 45 degrees. The reasons for the 5 to 60 degrees θ, when less than 5 degrees, the tire pressure to the O-ring 4 (internal pressure 2.2 kg / cm ² in passenger cars, trucks, 6.0 kg / cm ² by bus) when the applied This is because the O-ring 4 may come off from the O-ring groove 9 depending on the design. If it is larger than 60 degrees, the initial crushing allowance of the O-ring 4 is insufficient (the O-ring 4 has the seal surface 10 and the O-ring pressing surface). This is because it is difficult to obtain an action of being crushed into the taper formed by the shaft 11 and being crushed to increase the sealing performance.
Regarding the operation and effect of the third embodiment, since the distance between the seal surface 10 of the O-ring groove 9 and the O-ring pressing surface 11 of the side ring 1 decreases toward the outer side in the wheel axis direction, the tire internal pressure is reduced to the O-ring. In addition to preventing the O-ring 4 from coming off to the atmosphere when applied to the mud 4, mud through a narrow interval between the seal surface 10 of the O-ring groove 9 and the O-ring pressing surface 11 of the side ring 1, Damage to the O-ring 4 due to stones or the like is suppressed, and the reliability of the seal is improved.

Example 4
In Embodiment 4 of the present invention, as shown in FIG. 9, at least one of the seal surface 10 of the O-ring groove 9 and the O-ring pressing surface 11 of the side ring 1 is formed of a concave curved surface. The distance between the seal surface 10 of the groove 9 and the O-ring pressing surface 11 of the side ring 1 is reduced from the center of the O-ring toward the outer side in the wheel axis direction. In FIG. 9, the seal surface 10 of the O-ring groove 9 is an inclined surface, and only the O-ring pressing surface 11 of the side ring 1 is a concave curved surface. The diameter of the concave surface of the concave curved surface is larger than the cross-sectional diameter of the O-ring 4.
As for the operation and effect of the fourth embodiment, since the distance between the seal surface 10 of the O-ring groove 9 and the O-ring pressing surface 11 of the side ring 1 decreases toward the outer side in the wheel axis direction, the tire internal pressure is reduced to the O-ring. In addition to preventing the O-ring 4 from coming off to the atmosphere when applied to the mud 4, mud through a narrow interval between the seal surface 10 of the O-ring groove 9 and the O-ring pressing surface 11 of the side ring 1, Damage to the O-ring 4 due to stones or the like is suppressed, and the reliability of the seal is improved. In the case of a concave curved surface, the inclination becomes tight when the O-ring 4 is pushed and moved outward in the wheel axis direction as compared with the tapered surface. Therefore, when the tire internal pressure is applied to the O-ring 4, the O-ring 4 moves to the atmosphere side. The effect of preventing detachment of the material becomes greater.

FIG. 2 is a half cross-sectional view of a B-type lateral loading wheel having a seal structure according to Embodiment 1 of the present invention. It is an expanded sectional view in the air filling state of the seal structure of FIG. It is an expanded sectional view in the air bleeding state of the seal structure of FIG. FIG. 3 is a cross-sectional view of the seal structure of FIG. 2 when a side ring is prevented from rotating by a screw. It is sectional drawing which shows each process of attachment / detachment of a side ring and an O-ring. It is sectional drawing in the air filling state of the seal structure of the B-type horizontal loading wheel of Example 2 of this invention. It is sectional drawing in the air bleeding state of the seal structure of FIG. It is sectional drawing (1) in an air filling state, and sectional drawing (2) in an air release state of the seal structure of the B type horizontal loading wheel of Example 3 of this invention. It is sectional drawing in the air filling state of the seal structure of the B-type horizontal loading wheel of Example 4 of this invention. It is a half sectional view of an A type transverse loading wheel of a comparative example. It is an expanded sectional view of the seal structure of the A type lateral loading wheel of a comparative example. FIG. 10 is an exploded perspective view of the seal structure of FIG. 9. It is a half sectional view of an A type transverse loading wheel of a comparative example. It is sectional drawing of the seal structure of the B type horizontal loading wheel before the improvement of a comparative example. It is sectional drawing when a side ring exists in a pushing position of the seal structure of the B type horizontal loading wheel before the improvement of a comparative example. It is sectional drawing when a side ring exists in a seal position of the seal structure of the B type horizontal loading wheel before the improvement of a comparative example. It is sectional drawing of the seal structure of the B type horizontal loading wheel before the improvement of the comparative example which shows the procedure of tire removal. It is sectional drawing which shows the clearance gap between a side ring and a rim | limb of the seal structure of the B type horizontal loading wheel before the improvement of a comparative example.

Explanation of symbols

1 Side ring 2 Rim 3 Bead sheet 4 O-ring 5 Tires 6 and 7 Convex part (stopper)
8 Extension portion 9 O-ring groove 10 Seal surface 11 O-ring pressing surface 12, 13 Notch 14 Clearance 15 Tire lateral pressure receiving surface 16 Screw 17 Seal member

Claims (6)

B-type lateral loading having a rim, a side ring that is attachable to and detachable from the rim and has a bead seat formed on an outer peripheral surface, and an O-ring that applies tire pressure to seal between the rim and the side ring A seal structure for a wheel, wherein the O-ring is disposed at an axially outer end position of the side ring;
A rim stopper is formed on the rim, and an O-ring groove is provided on the outer side in the wheel axial direction from the rim stopper of the rim. An O-ring is fitted into the O-ring groove of the rim to apply tire air pressure to the side ring, and the O-ring. The O-ring is sandwiched between a seal surface that contacts the O-ring on the groove surface of the groove and an O-ring pressing surface that contacts the O-ring on the outer side in the axial direction and on the inner side in the radial direction of the side ring, A gap between the seal surface of the O-ring groove and the O-ring pressing surface of the side ring that opens to the outside in the radial direction for attaching and detaching the O-ring to and from the O-ring groove in a state where no tire air pressure is applied. A seal structure of a B-type lateral loading wheel formed .   The seal structure for a B-type lateral loading wheel according to claim 1, wherein the O-ring is disposed at a rim end on the inner side in the vehicle left-right direction. The side ring stopper formed before SL side ring, said Rimusutoppa and the side ring stopper and the B-type lateral loading wheel of claim 1, wherein the measured the stopper from the rim of the side rings are engaged with the axial direction of the wheel Seal structure. The seal structure of the O The sealing surface of the ring groove and O-ring pressing surface of the side ring, B-type horizontal loading wheel of claim 1 wherein forming a taper that tapers toward the outer axial direction of the wheel. The seal structure for a B-type lateral loading wheel according to claim 4 , wherein an angle formed by a seal surface of the O-ring groove and an O-ring pressing surface of the side ring is 5 to 60 degrees. At least one of the sealing surface of the O-ring groove and the O-ring pressing surface of the side ring is a concave curved surface, and the distance between the sealing surface of the O-ring groove and the O-ring pressing surface of the side ring. There sealing structure B-type lateral loading wheel of claim 1 wherein the reduced toward the O-ring center outward axial direction of the wheel.

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