JP4255022B2 - Side-loading rim structure for vehicle wheel and assembly method of wheel assembly - Google Patents

Description

  The present invention relates to a side-loading rim structure for a vehicle wheel and a method for assembling a wheel and tire assembly having the rim structure.

  A rim of a general vehicle wheel has a small-diameter drop portion in the middle portion in the width direction, first and second bead seat portions on both sides in the width direction, and first, A second flange portion is provided. In this rim, since the tire bead is once dropped into the drop portion and then placed on the bead seat portion, the tire loading operation is complicated.

  Therefore, a laterally loaded rim structure as shown in Patent Document 1 has been developed. In this rim structure, it is composed of two parts, a rim body and a side ring. The rim body does not include a drop part, has a substantially cylindrical shape, has a first bead seat part and a first flange part on one peripheral part, and a side ring is detachably attached to the other peripheral part. It is like that. The side ring has a second bead seat portion and a second flange portion.

  A plurality of first engagement protrusions are formed on the other peripheral edge of the rim body at intervals in the circumferential direction, and a plurality of second engagement protrusions are also formed on the side ring in the circumferential direction. The side ring is attached to the rim body by the engagement of the first and second engaging projections.

  The tire loading operation in the rim structure will be described. First, the tire is loaded into the rim body while moving from the side along the axial direction of the wheel. Since the second flange portion is formed on the side ring and is not formed on the rim body, and the second flange portion does not become an obstacle at the time of tire loading, such lateral loading of the tire becomes possible. Moreover, in Patent Document 1, since the second bead seat portion having a taper is also formed on the side ring and not on the rim main body, the tire can be loaded on the rim main body without being deformed. As a result, the loading operation of the tire can be performed smoothly and easily.

By loading the tire, one bead of the tire rides on the first bead seat portion of the rim body. A side ring is mounted after the tire is loaded. More specifically, the side ring is pushed in with the second engagement protrusions of the side ring aligned with the gap between the first engagement protrusions of the rim body. Thereby, the other bead of a tire gets on the 2nd bead seat part of a side ring. In this state, the second engagement protrusion is positioned behind the first engagement protrusion by rotating the side ring by a predetermined angle. Thereby, the first and second engaging protrusions are engaged with each other.
JP 2004-17727 A (FIGS. 1 and 7)

  In the above rim structure, when the side ring is pushed and turned after the tire is loaded, friction acts between the bead seat portion of the side ring and the bead of the tire, so that it takes force to turn the side ring. There was an inconvenience that it took time to install.

  In order to solve the above-mentioned problems, a lateral loading rim structure for a vehicle wheel according to the present invention includes a rim main body, an annular collar, and a side ring. A first bead seat portion on which one surface of the tire is placed with a tapered surface is formed, and a first flange portion is formed on the outer side in the width direction of the rim body with respect to the first bead seat portion. A plurality of first engaging protrusions are formed at intervals in the circumferential direction on the other peripheral edge of the main body, and a mounting surface is formed on the outer periphery of the other peripheral edge. 2 flange portions are formed, and a plurality of second engagement protrusions are formed at intervals in the circumferential direction, and the second engagement protrusions are positioned on the inner side in the width direction than the first engagement protrusions. Engaging with the first engaging protrusion The side ring is attached to the other peripheral portion of the rim body, and the collar is a second bead seat portion on which the outer peripheral surface is tapered and the other bead of the tire is placed, and the mounting surface of the rim body And the outer periphery of the collar in the width direction is locked to the side ring.

  According to the above configuration, the tire can be loaded into the rim body by a smooth and simple operation without being obstructed by the second flange portion and the second bead seat portion. Further, since the friction between the side ring and the tire is reduced, the work of pushing the side ring and mounting it on the rim main body can be performed smoothly and easily.

  Preferably, the mounting surface of the rim body has a smaller diameter than the intermediate portion of the rim body. According to this, the fitting state of the collar on the mounting surface can be stably maintained.

  Preferably, the first engaging protrusion is formed on the inner periphery of the rim body, the side ring has a base portion, and the base portion is radially extending from the cylindrical portion and the outer peripheral edge of the cylindrical portion in the width direction. An annular flange projecting outward, the second engaging projection is formed on the outer periphery of the cylindrical portion, the second flange is connected to the annular collar, and the collar The outer periphery of the width direction is locked. According to this, since the side ring is attached to the inner periphery of the rim main body and the collar is attached to the outer periphery, the collar and the side ring can be arranged in a narrow area, thereby avoiding an increase in the width of the rim structure. it can.

  Preferably, the first engagement protrusion is formed on an outer periphery of a portion of the rim body on the outer side in the width direction from the mounting surface, and an outer diameter of the first engagement protrusion is equal to or less than an outer diameter of the mounting surface. The side ring has a base portion, the second engaging protrusion is formed on the inner periphery of the base portion, and the second flange portion is formed on the outer periphery of the base portion. The periphery of the is locked. According to this, a wide space inside the rim body can be secured, and for example, various components can be arranged with a margin in the space.

  Preferably, the portion of the base portion closer to the collar has a tapered outer peripheral surface that substantially coincides with the outer peripheral surface of the collar, thereby forming a part of the second bead seat portion. According to this, since the collar can be narrowed, the collar and the side ring are arranged in a relatively narrow region even though the second engaging projection and the collar are arranged on the outer periphery of the rim body. be able to.

The method for assembling the wheel assembly according to the present invention includes:
(A) A rim body is included, and a tapered first bead seat portion is formed at one peripheral portion of the rim body, and the first flange portion is wider than the first bead seat portion in the width direction of the rim body. A wheel body formed on the outer side and having a plurality of first engaging projections formed at intervals in the circumferential direction on the other peripheral edge of the rim main body, and a mounting surface formed on the outer periphery of the other peripheral edge When,
(B) a side ring having a second flange portion and having a plurality of second engagement protrusions formed at intervals in the circumferential direction;
(C) an annular collar provided as a second bead seat portion with a tapered outer peripheral surface;
(D) Tires,
Prepare
The tire is moved from the other peripheral portion of the rim body in the axial direction of the wheel and loaded on the outer periphery of the rim body, thereby placing one bead of the tire on the first bead seat portion of the rim body,
Next, by fitting the collar on the mounting surface of the rim body, the other bead of the tire is placed on the collar,
Next, the second engagement protrusion of the side ring is positioned in the gap between the first engagement protrusions of the rim body, the side ring is pushed toward the rim body, and the side ring is rotated by a predetermined angle, thereby The second engagement protrusion is engaged with the first engagement protrusion so as to be positioned on the inner side in the width direction of the rim body with respect to the first engagement protrusion, whereby the side ring is engaged with the other peripheral portion of the rim body. And the peripheral edge of the outer side in the width direction of the collar is locked by the side ring.

  According to the above method, it is possible to smoothly and easily attach the tire, the collar, and the side ring to the rim body.

  According to the present invention, a tire loading operation and a side ring mounting operation can be simplified.

  Hereinafter, a first embodiment of the present invention will be described with reference to FIG. FIG. 1 shows a wheel assembly for a passenger car (vehicle). This wheel assembly includes a wheel A and a tire 50. The wheel A is composed of three parts, a wheel main body 10, a collar 20, and a side ring 30 that are separate from each other.

  The wheel body 10 includes a rim body 11 and a disk 19 connected to one peripheral edge of the rim body 11. The rim body 11, the collar 20 and the side ring 30 constitute the rim structure of the present invention.

  The outer peripheral surface of the intermediate portion 12 (intermediate portion in the width direction) of the rim body 11 forms a cylindrical surface in a wide area. A first bead sheet portion 13 is formed on one peripheral edge of the rim body 11, and a first flange portion 14 is formed on the outer side in the width direction than the first bead sheet portion 13 (outside in the width direction of the rim body 11). Has been. The outer peripheral surface of the first bead sheet portion 12 is tapered so as to have a smaller diameter toward the inner side in the width direction. The outer peripheral surface of the first bead sheet portion 12 and the inner surface of the first flange portion 13 are continuous. Further, a valve mounting hole 18 is formed in the peripheral portion, and an air valve (not shown) is mounted in the valve mounting hole 18.

  On the outer periphery of the other peripheral edge portion of the rim body 11, a mounting surface 15 made of a small-diameter cylindrical surface lower than the outer peripheral surface of the intermediate portion 12 is formed. An annular seal wall 16 is formed on the inner periphery of the peripheral edge, and a plurality of, for example, eight first engagement protrusions 17 are formed away from the seal wall 16 in the width direction outward direction. The seal wall 16 and the first engagement protrusion 17 protrude in the radial direction and the inward direction. The first engagement protrusions 17 have a predetermined length in the circumferential direction and are spaced apart from each other at equal intervals in the circumferential direction.

  The collar 20 is provided as a second bead seat portion, has a cylindrical shape, and an inner periphery thereof forms a cylindrical surface having a diameter substantially equal to that of the mounting surface 15 of the rim body 11. It is fitted in. An annular housing groove is formed on the mounting surface 15, and an air seal between the collar 20 and the rim body 11 is formed by an air seal O-ring 41 housed in the housing groove. The outer peripheral surface 21 of the collar 20 is tapered so as to have a smaller diameter toward the inner side in the width direction. The outer diameter of the bead sheet portion 13 and the collar 20 is equal to or larger than the outer diameter of the intermediate portion 12 of the rim body 11.

  The side ring 30 integrally includes a base portion 31 having an L-shaped cross section and a second flange portion 35. The base portion 31 includes a cylindrical portion 31a and an annular flange portion 31b that protrudes radially outward from the outer periphery of the cylindrical portion 31a in the width direction. The second flange portion 35 is continuous with the annular flange portion 31a and projects in the radial direction and the outward direction. A second engagement protrusion 32 is formed on the outer periphery of the cylindrical portion 31a so as to protrude radially and outwardly. The same number of the second engagement protrusions 32 as the first engagement protrusions 17 are provided and are spaced apart at equal intervals in the circumferential direction. The circumferential length of the second engagement protrusion 32 is substantially equal to that of the first engagement protrusion 17 and is equal to or less than the circumferential length of the gap between the first engagement protrusions 17.

  The side ring 30 can be attached to and detached from the rim body 11 by engaging the second engagement protrusion 32 of the side ring 30 with the second engagement protrusion 32 positioned behind the first engagement protrusion 17 of the rim body 11 (inward in the width direction). It is attached to. An annular receiving groove is formed on the outer periphery of the cylindrical portion 31a so as to be located on the inner side in the width direction from the second engaging protrusion 32, and an O-ring 42 for dust seal is received in the receiving groove. In the mounted state of the side ring 30, the seal wall 16 of the rim body 11 hits the O-ring 42, thereby preventing dust from entering the engagement portion between the engagement protrusions 17 and 32. When the ring 30 is removed, it is possible to prevent the hardened dust from becoming an obstacle. Further, since the dust seal O-ring 42 can prevent the air seal O-ring 41 from touching the outside air, water, or the like, the air seal O-ring 41 can be prevented from deteriorating.

  The tire 50 is mounted on the outer periphery of the rim body 11 such that one bead 51 rides on the first bead seat portion 13 of the rim body 11 and the other bead 52 rides on the collar 20.

  The beads 51 and 52 of the tire 50 receive an opening force due to the air pressure, but are restricted by the flange portions 14 and 35, and the bead seat portion 13 and the collar 20 are tapered. , It can be in close contact with the collar 20. The collar 20 receives a force in the width direction and the outward direction from the bead 52 of the tire 50, but the outer periphery in the width direction of the collar 20 is locked to the inner surface of the annular flange 31 b of the side ring 30. Therefore, the bead 52 can be firmly supported.

  In the rim structure configured as described above, the mounting structure of the side ring 30 is disposed on the radially inner side of the collar 20, so that the area where the collar 20 and the side ring 30 are disposed can be narrowed, and thus the width of the rim structure is increased. Can be avoided.

  A method for assembling the tire assembly having the above configuration will be described. An air valve is mounted in the valve mounting hole 18 of the rim body 11. As shown in FIG. 2, the tire 50 is laterally loaded into the rim main body 11 from the peripheral portion on the opposite side of the first flange portion 13. That is, while maintaining the tire 50 coaxial with the wheel body 10, the tire 50 is moved in the axial direction of the wheel body 10 and loaded on the outer periphery of the rim body 11. At the time of this horizontal loading, neither the second flange portion nor the second bead seat portion is formed on the rim body 11, so that one bead 51 of the tire 50 passes through the peripheral edge portion of the rim body 11 without obstruction, and is further cylindrical. The intermediate portion 12 forming the surface can pass through the first seed 12 without much resistance. As a result, the loading operation of the tire 50 can be performed easily and smoothly. When the tire 50 is loaded in the rim main body 11, the other bead 52 faces the mounting surface 15 of the rim main body 11 through a gap.

  Next, as shown in FIG. 3, the collar 20 is moved while being kept coaxial with the wheel body 10, and is fitted to the mounting surface 15 of the rim body 11. At this time, the collar 20 enters the inner periphery of the bead 52 of the tire 51, and the bead 52 gets on the outer peripheral surface 21 of the collar 20. Although the collar 20 receives resistance due to friction between the outer peripheral surface 21 and the bead 52, since the rotation operation is not necessary and it is merely pushed in, the collar 20 is easily attached. Prior to the mounting of the collar 20, an air seal O-ring 41 is accommodated in the housing groove formed in the mounting surface 15, and an air seal between the collar 20 and the mounting surface 15 is obtained.

  Next, as shown in FIG. 1, the side ring 30 is attached to the rim body 11. More specifically, the second engagement protrusion 32 of the side ring 30 is positioned in the gap between the first engagement protrusions 17 of the rim body 11, and the side ring 30 is pushed in. The engagement protrusion 32 is positioned behind the first engagement protrusion 17 (inward in the width direction) and engaged. In order to attach the dust seal O-ring 42, the side ring 30 is further pushed in so that the inner peripheral surface of the second flange portion 35 of the side ring 30 is in contact with the outer peripheral surface of the first engagement protrusion 17 of the rim body 11. To. Since the O-ring groove is not covered from the seal wall 16, the O-ring 42 can be attached to the O-ring groove. Thereafter, the side ring 30 is prevented from being rotated by a known rotation preventing means (not shown). Since the side ring 30 is not in contact with the inner periphery of the bead 52 of the tire 50 when the side ring 30 is pushed, it is not necessary to receive a large frictional resistance from the bead 52, and the mounting can be performed easily and smoothly. it can.

  Finally, compressed air is supplied to the tire 50. Thereby, the beads 51 and 52 of the tire 50 are in close contact with the first bead sheet portion 13 and the collar 20. Further, the sidewall of the tire 50 is in close contact with the first and second flange portions 14 and 35 and pushed outward in the width direction, whereby the side ring 30 is displaced outward in the width direction, and the seal wall 16 crushes the O-ring 42. , Sealing by the O-ring 42 is complete.

  Next, a second embodiment of the present invention will be described with reference to FIG. In FIG. 4, the same reference numerals are given to the components corresponding to the first embodiment, and detailed description thereof will be omitted. Since the mounting structure of the side ring 30A is different from that of the first embodiment, the second embodiment will be described in detail below. A mounting surface 15 and a first engagement protrusion 17 are formed on the outer periphery of the peripheral edge of the rim body 11 opposite to the first flange portion 14. The first engaging protrusion 17 is located on the outer side in the width direction from the mounting surface 15 and protrudes radially outward. An accommodating groove into which a dust seal O-ring 42 is fitted is formed on the outer side in the width direction of the first engaging protrusion 17. The outer diameter of the first engagement protrusion 17 is equal to or smaller than the outer diameter of the mounting surface 15.

  The side ring 30A has a base portion 31A. On the inner periphery of the base portion 31A, a second engaging projection 32 and an annular seal wall 39 projecting radially and inward are formed apart in the width direction. Yes. The seal wall 39 is located on the outer side in the width direction from the second engagement protrusion 32 and is in contact with the O-ring 42. The base portion 31 </ b> A locks the outer periphery of the collar 20 in the width direction. In the second embodiment, since the side ring 30 is mounted on the outer periphery of the rim main body 11, the space inside the rim main body 11 in the radial direction can be widened.

  Further, in the second embodiment, the width of the collar 20 is narrower than that of the first embodiment, and instead, the outer peripheral surface 31x near the collar 20 of the base portion 31A is tapered to substantially coincide with the outer peripheral surface of the collar 20, It becomes a part of 2nd bead seat part. As a result, the collar and the side ring can be arranged in a relatively narrow region even though the mounting structure and the collar of the side ring 30 are arranged on the outer periphery of the rim body.

  Since the assembly method of the wheel assembly of the second embodiment is basically the same as that of the first embodiment, the description thereof is omitted.

  The present invention is not limited to the above-described embodiments, and various aspects are possible. For example, the outer periphery of the intermediate portion 12 of the rim body 11 has an annular core that receives the vehicle weight via the tire during tire puncture and allows the vehicle to continue running, or a tire bead when a high-strength tire is punctured. An annular stopper or the like that prevents the lateral movement and allows the vehicle to continue running may be mounted. In this case, the core and the stopper are attached to the rim body before the collar is attached.

It is a principal part expansion longitudinal cross-sectional view of the wheel assembly provided with the rim | limb structure concerning 1st Embodiment of this invention. It is a principal part expanded longitudinal sectional view which shows the state which loaded the tire on the rim body in the assembly process of the wheel assembly. It is a principal part expanded longitudinal cross-sectional view which shows the state which fitted the color | collar to the rim main body in the assembly process of the wheel assembly. It is a principal part expanded longitudinal cross-sectional view of the wheel assembly provided with the rim | limb structure concerning 2nd Embodiment of this invention.

Explanation of symbols

A Wheel 10 Wheel body 11 Rim body 12 Rim body intermediate part 13 First bead sheet part 14 First flange part 15 Mounting surface 17 First engagement protrusion 20 Collar (second bead sheet part)
21 Collar outer peripheral surface 30, 30A Side ring 31, 31A Base portion 31a Cylindrical portion 31b Annular flange 32 Second engagement protrusion 35 Second flange portion 50 Tire 51, 52 Bead

Claims (6)

It has a rim body, an annular collar, and a side ring,
A first bead seat portion is formed on one peripheral portion of the rim main body so that the outer peripheral surface is tapered and the one bead of the tire is placed thereon, and the first flange portion is more than the first bead seat portion. A plurality of first engaging protrusions are formed on the other peripheral edge of the rim main body at intervals in the circumferential direction, and are attached to the outer periphery of the other peripheral edge. A surface is formed,
A second flange portion is formed on the side ring, and a plurality of second engagement protrusions are formed at intervals in the circumferential direction, and the second engagement protrusions are formed in the width direction from the first engagement protrusions. By engaging the first engagement protrusion so as to be located on the inner side, the side ring is mounted on the other peripheral edge of the rim body,
The collar has a second bead seat portion on which the outer peripheral surface is tapered to place the other bead of the tire, is fitted on the mounting surface of the rim body, and the outer periphery in the width direction of the collar is engaged with the side ring. A horizontally loaded rim structure for a vehicle wheel, characterized by being stopped.   The lateral loading type rim structure for a vehicle wheel according to claim 1, wherein a mounting surface of the rim body has a smaller diameter than an intermediate portion of the rim body.   The first engagement protrusion is formed on the inner periphery of the rim body, the side ring has a base portion, and the base portion extends radially outward from the cylindrical portion and the outer periphery in the width direction of the cylindrical portion. A projecting annular flange, the second engaging projection is formed on the outer periphery of the cylindrical portion, the second flange is connected to the annular flange, and the collar is connected to the outer side in the width direction of the collar. The laterally-loading rim structure for a vehicle wheel according to claim 1 or 2, wherein a peripheral edge of the vehicle wheel is locked.   The first engagement protrusion is formed on an outer periphery of a portion of the rim main body that is on the outer side in the width direction from the mounting surface, and an outer diameter of the first engagement protrusion is equal to or less than an outer diameter of the mounting surface. Has a base portion, the second engaging protrusion is formed on the inner periphery of the base portion, the second flange portion is formed on the outer periphery of the base portion, and the outer periphery of the collar is formed on the base portion. The laterally-loading rim structure for a vehicle wheel according to claim 1, wherein the rim structure is locked.   The portion of the base portion closer to the collar has an outer peripheral surface that tapers and substantially coincides with the outer peripheral surface of the collar, thereby forming a part of the second bead sheet portion. 5. A horizontally loaded rim structure for a vehicle wheel according to 4. (A) A rim body is included, and a tapered first bead seat portion is formed at one peripheral portion of the rim body, and the first flange portion is wider than the first bead seat portion in the width direction of the rim body. A wheel body formed on the outer side and having a plurality of first engaging projections formed at intervals in the circumferential direction on the other peripheral edge of the rim main body, and a mounting surface formed on the outer periphery of the other peripheral edge When,
(B) a side ring having a second flange portion and having a plurality of second engagement protrusions formed at intervals in the circumferential direction;
(C) an annular collar provided as a second bead seat portion with a tapered outer peripheral surface;
(D) Tires,
Prepare
The tire is moved from the other peripheral portion of the rim body in the axial direction of the wheel and loaded on the outer periphery of the rim body, thereby placing one bead of the tire on the first bead seat portion of the rim body,
Next, by fitting the collar on the mounting surface of the rim body, the other bead of the tire is placed on the collar,
Next, the second engagement protrusion of the side ring is positioned in the gap between the first engagement protrusions of the rim body, the side ring is pushed toward the rim body, and the side ring is rotated by a predetermined angle, thereby The second engagement protrusion is engaged with the first engagement protrusion so as to be positioned on the inner side in the width direction of the rim body with respect to the first engagement protrusion, whereby the side ring is engaged with the other peripheral portion of the rim body. A method for assembling a wheel assembly, wherein the side ring is engaged with the outer periphery of the collar in the width direction.

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