CN114670582B - Bicycle rim - Google Patents
Bicycle rim Download PDFInfo
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- CN114670582B CN114670582B CN202011547613.9A CN202011547613A CN114670582B CN 114670582 B CN114670582 B CN 114670582B CN 202011547613 A CN202011547613 A CN 202011547613A CN 114670582 B CN114670582 B CN 114670582B
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- Prior art keywords
- annular
- surface portion
- elastic member
- bicycle rim
- radially outer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B21/00—Rims
- B60B21/02—Rims characterised by transverse section
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B21/00—Rims
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
A bicycle rim (1) is provided, which can easily mount a tire (200). A tire (200) is mounted on a bicycle rim (1). A bicycle rim (1) is provided with a1 st annular side surface part (3), a2 nd annular side surface part (5), and an annular connecting part (7). The annular connecting portion (7) is used for connecting the 1 st annular side surface portion (3) and the 2 nd annular side surface portion (5). The annular connecting portion (7) includes an elastic member (23). A recess (19) is formed in a radially outer surface portion (17) of the annular connecting portion (7), and the recess (19) has an edge portion (19 a) and a bottom surface (19 b). The minimum radial distance (D) defined by the edge portion (19 a) and the bottom surface (19 b) in the radial direction is 2.0mm or more.
Description
Technical Field
The present invention relates to a rim for a bicycle.
Background
Patent document 1 discloses a rim for a bicycle. A bicycle rim is coupled to a hub via a plurality of spokes. A known bicycle rim is provided with a hole portion through which a pipe joint is inserted. The hole portion is covered with an adhesive tape. In this state, a tubeless tire is mounted on the bicycle rim.
Patent document 1, ep2583835a1.
A well is usually provided in the center of the rim corresponding to the tubeless tire. When the tubeless tire is mounted on the rim, the tire bead is placed in the well. By placing the tire bead into this groove portion, a margin is generated in the circumferential direction of the tire, and the tire is easily mounted. However, if the groove portion is deep, the bead is difficult to be carried on the bead seat surface when air enters the tire.
Disclosure of Invention
The invention provides a rim for a bicycle, which can easily mount a tire.
Regarding the 1 st aspect of the present invention, a tire is mounted on a rim for a bicycle. A bicycle rim includes a1 st annular side surface portion, a2 nd annular side surface portion, and an annular connecting portion. The annular connecting portion connects the 1 st annular side surface portion and the 2 nd annular side surface portion in an axial direction of a rotation center axis of the bicycle rim. The annular connecting portion includes an elastic member.
In the radial direction of the rotation center axis, a radially outer surface portion of the annular coupling portion is defined. A recess extending in the circumferential direction of the rotation center axis and having an edge portion and a bottom surface is formed in the radially outer surface portion of the annular coupling portion. The minimum radial distance defined by the edge portion and the bottom surface in the radial direction is 2.0mm or more.
In the bicycle rim according to claim 1, since the annular connecting portion includes the elastic member, it is easy to mount the tire on the bicycle rim. In the bicycle rim, the minimum radial distance is 2.0mm or more, so that the bicycle rim can be easily provided with a tire.
In claim 2 of the present invention, in the rim for a bicycle according to claim 1, the radial distance is 4.0mm or less.
In the bicycle rim according to claim 2, the tire can be easily mounted on the bicycle rim by setting the radial distance to 4.0mm or less.
In claim 3 of the present invention, in the rim for a bicycle of claim 1 or 2, the bottom surface of the concave portion is located at the radially outer surface portion of the elastic member.
In the bicycle rim according to claim 3, the bottom surface of the recess is located on the radially outer surface portion of the elastic member, whereby the tire can be easily mounted on the bicycle rim.
In the 4 th aspect of the present invention, the rim for a bicycle according to any one of the 1 st to 3 rd aspects is configured as follows. The annular connecting portion includes a connecting base portion for connecting the 1 st annular side portion and the 2 nd annular side portion. The elastic member is disposed radially outward of the connection base.
In the bicycle rim according to claim 4, the elastic member is disposed radially outward of the coupling base, so that the tire can be easily mounted on the bicycle rim.
In the rim for a bicycle according to claim 4, the annular connecting portion further includes a seal member disposed between the connecting base and the elastic member in a radial direction.
The rim for a bicycle according to claim 5 further includes a sealing member, so that the hole through which the pipe joint is inserted can be sealed appropriately.
In the 6 th aspect of the present invention, in the rim for a bicycle of the 5 th aspect, the annular connecting portion includes a mounting portion on an outer side of the pair of edge portions in an axial direction of the rotation center axis. The sealing member extends to the mounting portion.
In the rim for a bicycle of claim 6, the sealing member extends to the mounting portion, so that the hole portion through which the pipe joint is inserted can be sealed more appropriately.
In accordance with claim 7 of the present invention, in the rim for a bicycle according to any one of claims 1 to 4, the annular connecting portion further includes a seal member disposed radially outward of the elastic member.
In the rim for a bicycle according to claim 7, since the seal member is disposed radially outward of the elastic member, the hole through which the pipe joint is inserted can be sealed more appropriately by the seal member via the elastic member.
In an 8 th aspect of the present invention, in the rim for a bicycle of the 7 th aspect, the annular connecting portion includes a mounting portion on an outer side of the pair of edge portions in an axial direction of the rotation center axis. The sealing member extends to the mounting portion.
In the rim for a bicycle of claim 8, the sealing member extends to the mounting portion, so that the hole portion through which the pipe joint is inserted can be sealed more appropriately.
In the 9 th aspect of the present invention, a tire is mounted on a rim for a bicycle. A bicycle rim includes a1 st annular side surface portion, a 2 nd annular side surface portion, and an annular connecting portion. The annular connecting portion connects the 1 st annular side surface portion and the 2 nd annular side surface portion in an axial direction of a rotation center axis of the bicycle rim. The annular connecting portion includes an elastic member.
In the radial direction of the rotation center axis, the radially outer surface portion of the annular connecting portion is defined. A recess extending in the circumferential direction of the rotation center axis and having an edge portion and a bottom portion is formed in the radially outer surface portion of the annular coupling portion. The radial distance defined by the edge and the bottom in the radial direction is more than 2.0 mm.
In the bicycle rim according to claim 9, since the annular connecting portion includes the elastic member, it is easy to mount the tire on the bicycle rim. In the bicycle rim, the radial distance is 2.0mm or more, so that the bicycle rim can be used for easily mounting a tire.
In a 10 th aspect of the present invention, the rim for a bicycle according to the 9 th aspect is configured as follows. The bottom is a portion of the region of the recess where the elastic member is disposed closest to the rotation center axis.
The rim for a bicycle according to claim 10, wherein the radial distance is defined from the bottom portion by the rim portion in the radial direction. With this structure, the tire can be more easily mounted on the rim for a bicycle.
In an 11 th aspect of the present invention, in the rim for a bicycle according to the 9 th or 10 th aspect, the radial distance is 4.0mm or less.
In the bicycle rim according to claim 11, the tire can be easily mounted on the bicycle rim by setting the radial distance to 4.0mm or less.
In a 12 th aspect of the present invention, in the rim for a bicycle of any one of the 9 th to 11 th aspects, the bottom portion is located on a radially outer surface portion of the elastic member.
In the bicycle rim according to claim 12, the tire can be easily mounted on the bicycle rim by positioning the bottom portion on the radially outer surface portion of the elastic member.
In a 13 th aspect of the present invention, the rim for a bicycle according to any one of the 9 th to 12 th aspects is configured as follows. The annular connecting portion includes a connecting base portion for connecting the 1 st annular side portion and the 2 nd annular side portion. The elastic member is disposed radially outward of the connection base.
In the bicycle rim according to claim 13, the tire can be easily mounted on the bicycle rim by disposing the elastic member radially outside the coupling base.
In the 14 th aspect of the present invention, in the rim for a bicycle of the 13 th aspect, the annular connecting portion further includes a seal member disposed between the connecting base portion and the elastic member in a radial direction.
The rim for a bicycle according to claim 14 further includes a sealing member, so that the hole through which the pipe joint is inserted can be sealed appropriately.
In the 15 th aspect of the present invention, in the bicycle rim of the 14 th aspect, the annular connecting portion includes a mounting portion on an outer side of the pair of edge portions in an axial direction of the rotation center axis. The sealing member extends to the mounting portion.
In the rim for a bicycle of claim 15, the sealing member extends to the mounting portion, so that the hole portion through which the pipe joint is inserted can be sealed more appropriately.
In a 16 th aspect of the present invention, in the rim for a bicycle according to any one of the 9 th to 13 th aspects, the annular coupling portion further includes a seal member disposed radially outward of the elastic member.
In the rim for a bicycle according to claim 16, since the seal member is disposed radially outward of the elastic member, the hole through which the pipe joint is inserted can be sealed more appropriately by the seal member via the elastic member.
In a17 th aspect of the present invention, in the rim for a bicycle according to the 16 th aspect, the annular connecting portion includes a mounting portion on an outer side of the pair of edge portions in an axial direction of the rotation center axis. The sealing member extends to the mounting portion.
In the rim for a bicycle of claim 17, the sealing member extends to the mounting portion, so that the hole portion through which the pipe joint is inserted can be sealed more appropriately.
In the 18 th aspect of the present invention, a tire is mounted on a rim for a bicycle. The bicycle rim has a1 st annular side surface portion, a2 nd annular side surface portion, and an annular connecting portion. And an annular connecting portion connecting the 1 st annular side surface portion and the 2 nd annular side surface portion in an axial direction of a rotation center axis of the bicycle rim. The annular connecting portion includes an elastic member and a sealing member. The sealing member is disposed further outside the elastic member in a radial direction of the rotation center axis of the bicycle rim.
In the bicycle rim according to claim 18, since the annular connecting portion includes the elastic member, the tire can be easily mounted on the bicycle rim. Since the seal member is disposed radially outward of the elastic member, the hole through which the pipe joint is inserted can be sealed more appropriately by the seal member via the elastic member.
In the 19 th aspect of the present invention, the rim for a bicycle according to the 18 th aspect is configured as follows. Radially, a radially outer surface portion of the annular coupling portion is defined. A recess extending in the circumferential direction of the rotation center axis is formed in the radially outer surface portion.
In the rim for a bicycle of claim 19, the recess extends in the circumferential direction on the radially outer surface portion, so that the seal member and the elastic member can be easily arranged in the circumferential direction.
In the 20 th aspect of the present invention, the rim for a bicycle according to the 18 th or 19 th aspect is configured as follows. The annular connecting portion includes a connecting base portion for connecting the 1 st annular side portion and the 2 nd annular side portion. The elastic member is disposed radially further outside the connection base.
In the rim for a bicycle of claim 20, the elastic member is disposed radially outward of the coupling base, so that the tire can be easily mounted on the rim for a bicycle.
In the 21 st aspect of the present invention, a tire is mounted on a rim for a bicycle. A bicycle rim includes a 1 st annular side surface portion, a2 nd annular side surface portion, and an annular connecting portion. The annular connecting portion connects the 1 st annular side surface portion and the 2 nd annular side surface portion in an axial direction of a rotation center axis of the bicycle rim. The annular connecting portion includes an elastic member.
In the radial direction of the rotation center axis, a radially outer surface portion of the annular coupling portion is defined. The elastic member has a non-uniform radial thickness in the radial direction. The elastic member has a recess extending in the circumferential direction of the rotation center axis on a radially outer surface portion of the annular coupling portion and on a radially outer surface portion of the elastic member.
In the bicycle rim according to claim 21, the annular connecting portion includes an elastic member. The elastic member has a recess extending in the circumferential direction at the radially outer surface portion. This makes it possible to mount the tire on the rim for a bicycle more easily.
In the 22 nd aspect of the present invention, in the rim for a bicycle of the 21 st aspect, the annular connecting portion further includes a seal member disposed at least one of further outward than the elastic member and further inward than the elastic member in a radial direction.
In the bicycle rim according to claim 22, the sealing member is disposed further outside and/or further inside the elastic member, so that the hole through which the pipe joint is inserted can be sealed more appropriately.
A 23 rd aspect of the present invention is the rim for a bicycle according to any one of the 5 th to 8 th aspects, the 14 th to 20 th aspects, and the 22 nd aspect, wherein the sealing member is a tape member having an adhesive face.
In the rim for a bicycle of claim 23, the sealing member is a tape member having an adhesive surface, so that the sealing member can be easily attached to the target member.
In a 24 th aspect of the present invention, in the rim for bicycle according to any one of the 5 th to 8 th aspects, the 14 th to 20 th aspects, and the 22 th aspect, the sealing member is an annular rubber band member.
In the rim for a bicycle according to claim 24, the seal member is an annular rubber band member, so that the seal member can be easily attached to the target member.
In a 25 th aspect of the present invention, in the rim for a bicycle of any one of the 5 th to 8 th aspects, the 14 th to 20 th aspects, and the 22 th to 24 th aspects, the elastic member is permeable to air.
In the rim for a bicycle of claim 25, since the elastic member is permeable to air, the elastic member can be made lightweight.
In a 26 th aspect of the present invention, in the rim for a bicycle of any one of aspects 1 to 24, the elastic member is impermeable to air.
In the rim for a bicycle of claim 26, since the elastic member is impermeable to air, the tire can be prevented from leaking by the elastic member.
In a 27 th aspect of the present invention, in the rim for a bicycle according to any one of aspects 1 to 26, the elastic member is annular.
In the bicycle rim according to claim 27, the elastic member is annular, so that the elastic member can be easily arranged on the target member.
In a 28 th aspect of the present invention, in the rim for a bicycle according to any one of the 1 st to 27 th aspects, the recess is annular.
In the rim for a bicycle of claim 28, the recessed portion is annular, so that the tire can be easily mounted.
In a 29 th aspect of the present invention, in the rim for a bicycle according to any one of aspects 1 to 28, at least one of the 1 st annular side surface portion, the 2 nd annular side surface portion, and the annular connecting portion includes a nonmetallic material.
In the bicycle rim according to claim 29, at least one of the 1 st annular side surface portion, the 2 nd annular side surface portion, and the annular connecting portion includes a nonmetallic material, so that the bicycle rim can be reduced in weight.
In a 30 th aspect of the present invention, in the rim for a bicycle according to the 29 th aspect, the nonmetallic material is a composite fiber material.
In the bicycle rim according to claim 30, since the nonmetallic material is a composite fiber material, the bicycle rim can be made lightweight.
In the 31 st aspect of the present invention, in the rim for a bicycle according to any one of the 1 st to 28 th aspects, at least one of the 1 st annular side surface portion, the 2 nd annular side surface portion, and the annular connecting portion includes a metal material.
In the bicycle rim according to claim 31, since at least one of the 1 st annular side surface portion, the 2 nd annular side surface portion, and the annular connecting portion includes a metal material, rigidity of the bicycle rim can be appropriately ensured.
In a 32 nd aspect of the present invention, in the rim for a bicycle of the 31 st aspect, the metal material is aluminum.
In the bicycle rim according to claim 32, since the metal material is aluminum, both the rigidity of the bicycle rim and the weight reduction of the bicycle rim can be ensured.
In a 33 th aspect of the present invention, the rim for a bicycle according to any one of the 1 st to 32 th aspects is configured as follows. The 1 st annular side surface portion and the 2 nd annular side surface portion each have a holding portion for holding the tire and provided along the outer peripheral edge.
The rim for a bicycle according to claim 33 can appropriately hold the tire by the holding portions of the 1 st annular side portion and the 2 nd annular side portion.
In the 34 th aspect of the present invention, the rim for a bicycle according to the 33 th aspect is configured as follows. The holding portion includes a1 st holding portion disposed radially outward of the 1 st annular side surface portion, and a2 nd holding portion disposed radially outward of the 2 nd annular side surface portion.
The rim for a bicycle according to claim 34 can appropriately hold the tire by the 1 st holding portion and the 2 nd holding portion.
In the 35 th aspect of the present invention, the rim for a bicycle according to the 34 th aspect is configured as follows. The 1 st holding portion includes a1 st holding surface extending radially outward of the 1 st annular side surface portion. The 2 nd holding portion includes a2 nd holding surface extending radially outward of the 2 nd annular side surface portion.
The rim for a bicycle according to claim 35 can appropriately hold the tire by the 1 st holding surface of the 1 st holding portion and the 2 nd holding surface of the 2 nd holding portion.
In a 36 th aspect of the present invention, the rim for a bicycle according to the 34 th or 35 th aspect is configured as follows. The 1 st holding portion includes a 1 st locking portion disposed radially outward of the 1 st annular side surface portion. The 2 nd holding portion includes a 2 nd locking portion disposed radially outward of the 2 nd annular side surface portion.
The rim for a bicycle according to claim 36 can properly hold the tire by the 1 st locking portion of the 1 st holding portion and the 2 nd locking portion of the 2 nd holding portion.
Effects of the invention
The rim for bicycle of the present invention can easily mount a tire.
Drawings
Fig. 1 is a front view of a bicycle wheel according to embodiment 1.
Fig. 2 is a cross-sectional view of a rim for a bicycle according to embodiment 1 (section line II-II in fig. 1).
Fig. 3 is a partially enlarged cross-sectional view of a bicycle rim according to embodiment 1.
Fig. 4 is a cross-sectional view of the bicycle rim of embodiments 2 to 4 (section line IV-IV of fig. 3).
Fig. 5A is a partially enlarged cross-sectional view of a rim for a bicycle according to embodiment 2.
Fig. 5B is a partially enlarged cross-sectional view of a rim for a bicycle according to a modification of embodiment 2.
Fig. 6A is a partially enlarged cross-sectional view of a rim for a bicycle according to embodiment 3.
Fig. 6B is a partially enlarged cross-sectional view of a rim for a bicycle according to a modification of embodiment 3.
Fig. 7A is a partially enlarged cross-sectional view of a rim for a bicycle according to embodiment 4.
Fig. 7B is a partially enlarged cross-sectional view of a rim for a bicycle according to a modification of embodiment 4.
Detailed Description
< Embodiment 1>
The structure of the bicycle rim 1 of the present embodiment will be described with reference to the drawings. As shown in fig. 1, the bicycle rim 1 is coupled to a hub 102 via a plurality of spokes 101. The bicycle rim 1 has a rotation center axis C1. The bicycle rim 1 extends in the circumferential direction of the rotation center axis C1. For example, the bicycle rim 1 is formed in a ring shape. The tire 200 is mounted on the bicycle rim 1. The bicycle wheel 100 includes a bicycle rim 1, a plurality of spokes 101, and a hub 102.
As shown in fig. 2, the bicycle rim 1 includes a 1 st annular side surface portion 3, a2 nd annular side surface portion 5, and an annular connecting portion 7. At least one of the 1 st annular side surface portion 3, the 2 nd annular side surface portion 5, and the annular connecting portion 7 includes a nonmetallic material. The nonmetallic material is, for example, a composite fiber material. The composite fiber material is formed by combining a base material, that is, a resin, with fibers, for example. Composite fiber materials are characterized by light weight and high strength. In the present embodiment, the 1 st annular side surface portion 3, the 2 nd annular side surface portion 5, and the annular connecting portion 7 are each made of a nonmetallic material.
At least one of the 1 st annular side surface portion 3, the 2 nd annular side surface portion 5, and the annular connecting portion 7 may be made of a metal material. The metal material is, for example, aluminum. The 1 st annular side surface portion 3, the 2 nd annular side surface portion 5, and the annular connecting portion 7 may be each made of a metal material. The 1 st annular side surface portion 3, the 2 nd annular side surface portion 5, and the annular connecting portion 7 may be made of a metallic material or a nonmetallic material, respectively.
As shown in fig. 1, the 1 st annular side surface portion 3 extends in the circumferential direction of the rotation center axis C1. For example, the 1 st annular side surface portion 3 is formed in an annular shape. The 2 nd annular side surface portion 5 extends in the circumferential direction of the rotation center axis C1. For example, the 2 nd annular side surface portion 5 is formed in an annular shape. The 2 nd annular side surface portion 5 is disposed to face the 1 st annular side surface portion 3 in the axial direction of the rotation center axis C1. The radially inner portion of the rotation center axis C1 of the 2 nd annular side surface portion 5 is connected to the radially inner portion of the rotation center axis C1 of the 1 st annular side surface portion 3. The spoke 101 is attached to the portion where the 1 st annular side surface portion 3 and the 2 nd annular side surface portion 5 are connected. Hereinafter, the radial direction means the radial direction of the rotation center axis C1. The circumferential direction means the circumferential direction of the rotation center axis C1.
As shown in fig. 1 and 2, the 1 st annular side surface portion 3 and the 2 nd annular side surface portion 5 each have a holding portion 9. The holding portion 9 serves to hold the tire 200. The holding portion 9 is provided along the outer peripheral edge of the 1 st annular side surface portion 3 and the 2 nd annular side surface portion 5. The 1 st annular side surface portion 3 and the 2 nd annular side surface portion 5 each have a holding portion 9 provided along the outer peripheral edge for holding the tire 200. The holding portion 9 serves to hold a radially inner portion of the tire 200. The holding portion 9 includes a1 st holding portion 13 and a 2 nd holding portion 15. The 1 st holding portion 13 is disposed radially outward of the 1 st annular side surface portion 3. The 2 nd holding portion 15 is disposed radially outward of the 2 nd annular side surface portion 5. The holding portion 9 includes a1 st holding portion 13 disposed radially outward of the 1 st annular side surface portion 3, and a 2 nd holding portion 15 disposed radially outward of the 2 nd annular side surface portion 5.
As shown in fig. 2 and 3, the 1 st holding portion 13 is provided at a portion radially outside the 1 st annular side surface portion 3. As shown in fig. 3, the 1 st holding portion 13 includes a 1 st locking portion 13a. The 1 st locking portion 13a is disposed radially outward of the 1 st holding portion 13. The 1 st locking portion 13a is disposed radially outward of the 1 st holding surface 13 b. The 1 st locking portion 13a is disposed radially outward of the 1 st annular side surface portion 3. The 1 st holding portion 13 includes a 1 st locking portion 13a arranged radially outward of the 1 st annular side surface portion 3. The 1 st locking portion 13a is used to lock the 1 st portion 105a of the tire 200. The 1 st portion 105a is located radially inward of the tire 200. Part 1 105a is also referred to as a tire bead. The 1 st locking portion 13a extends in the circumferential direction of the rotation center axis C1. The 1 st locking portion 13a protrudes toward the 2 nd holding portion 15. The 1 st locking portion 13a protrudes parallel to the rotation center axis C1.
As shown in fig. 2 and 3, the 2 nd holding portion 15 is provided at a portion radially outside the 2 nd annular side surface portion 5. As shown in fig. 3, the 2 nd holding portion 15 includes a 2 nd locking portion 15a. The 2 nd locking portion 15a is disposed radially outward of the 2 nd holding portion 15. The 2 nd locking portion 15a is arranged radially outward of the 2 nd holding surface 15 b. The 2 nd locking portion 15a is disposed radially outward of the 2 nd annular side surface portion 5. The 2 nd holding portion 15 includes a 2 nd locking portion 15a arranged radially outward of the 2 nd annular side surface portion 5. The 2 nd locking portion 15a is used to lock the 2 nd portion 105b of the tire 200. The 2 nd portion 105b is located radially inward of the tire 200. Portion 2 105b is also referred to as a tire bead. The 2 nd locking portion 15a extends in the circumferential direction of the rotation center axis C1. The 2 nd locking portion 15a protrudes toward the 1 st holding portion 13. The 2 nd locking portion 15a protrudes parallel to the rotation center axis C1.
The 2 nd locking portion 15a is disposed opposite to the 1 st locking portion 13a in the axial direction of the rotation center axis C1. That is, the radially inner portion of the tire 200 is locked by the 1 st locking portion 13a and the 2 nd locking portion 15 a. For example, the 1 st portion 105a is locked by the 1 st locking portion 13 a. The 2 nd portion 105b is locked by the 2 nd locking portion 15 a.
As shown in fig. 2, the annular connecting portion 7 connects the 1 st annular side surface portion 3 and the 2 nd annular side surface portion 5 in the axial direction of the rotation center axis C1 of the bicycle rim 1. Radially outer surface portions 17 of the annular coupling portions 7 are defined in the radial direction of the rotation center axis C1. A recess 19 having an edge 19a and a bottom 19b is formed in the radially outer surface 17 of the annular coupling portion 7 so as to extend in the circumferential direction of the rotation center axis C1. The recess 19 is formed in the radially outer surface portion 17 of the annular coupling portion 7. The recess 19 has an edge portion 19a and a bottom portion 19b. In embodiment 1, the recess 19 has a bottom surface 19d and a side surface 19e. The recess 19 extends in the circumferential direction of the rotation center axis C1. Specifically, the recess 19 is annular. The recess 19 may be partially formed in the circumferential direction of the rotation center axis C1.
As shown in fig. 3, the recess 19 has a pair of edge portions 19a and a bottom portion 19b. The edge 19a is an end of the recess 19 in the circumferential direction of the rotation center axis C1. The pair of edge portions 19a are disposed on opposite sides of the bottom portion 19b in the axial direction of the rotation center axis C1. The pair of edge portions 19a are provided on the radially outer surface portion 17 of the annular coupling portion 7. In embodiment 1, a pair of edge portions 19a are provided on, for example, a radially outer surface portion 25 of a coupling base 21 described later. The radially outer surface portion 17 of the annular coupling portion 7 includes a radially outer surface portion 25 of a coupling base 21 described later.
The bottom portion 19b is provided between the pair of edge portions 19a in the axial direction of the rotation center axis C1. The bottom 19b is a portion closest to the rotation center axis C1 on the radially outer surface portion 17 of the recess 19. The bottom 19 is a portion of the region R of the recess 19 closest to the rotation center axis C1 of the elastic member 23. The bottom 19 is the portion closest to the rotation center axis C1 in the region of the recess 19 where the elastic member 23 is disposed. The bottom 19b is the portion closest to the rotation center axis C1 in the region R of the recess 19 where the elastic member 23 is disposed. The region R represents a range between both end portions of the elastic member 23 in the axial direction of the rotation center axis C1.
The radial position of the bottom 19b is on the radially outermost surface of the region R of the recess 19 where the elastic member 23 is arranged. The bottom 19b is provided on the radially outer surface portion 17 of the annular coupling portion 7. For example, the radially outer surface portion 17 of the annular coupling portion 7 includes a radially outer surface portion 27 of the elastic member 23 described later. The bottom 19b is defined herein as a central portion of the radially outer surface portion 27 of the elastic member 23, for example, in the axial direction of the rotation center axis C1.
As shown in fig. 2 and 3, the recess 19 includes a bottom surface 19d and a side surface 19e. The bottom 19d is provided between the pair of edge portions 19a in the axial direction of the rotation center axis C1. The bottom 19d is provided on the radially outer surface portion 17 of the annular coupling portion 7. The bottom surface 19d includes a bottom 19b. In embodiment 1, the bottom surface 19d includes the radially outer surface portion 25 of the joint base 21 and the radially outer surface portion 27 of the elastic member 23. The radially outer surface portion 25 of the coupling base 21 of the bottom surface 19d is provided between the side surface 19e and the elastic member 23 in the axial direction of the rotation center axis C1.
The side surface 19e is a face portion connecting the edge portion 19a and the bottom surface 19 d. The bottom 19e is provided between the pair of edge portions 19a in the axial direction of the rotation center axis C1. The bottom 19e is provided on the radially outer surface portion 17 of the annular coupling portion 7, for example. The bottom 19d is disposed between the pair of side surfaces 19e in the axial direction of the rotation center axis C1.
As shown in fig. 3, the annular connecting portion 7 includes a connecting base portion 21, and the connecting base portion 21 connects the 1 st annular side surface portion 3 and the 2 nd annular side surface portion 5. The annular coupling portion 7 includes an elastic member 23. Specifically, the annular coupling portion 7 includes a coupling base 21 and an elastic member 23. The connection base 21 connects the 1 st annular side surface portion 3 and the 2 nd annular side surface portion 5.
The connection base 21 extends in the circumferential direction of the rotation center axis C1. For example, the connection base 21 is formed in a ring shape. The coupling base 21 is provided with a hole 21a through which the pipe joint is inserted. The hole 21a penetrates the connection base 21 in the radial direction of the rotation center axis C1.
The joint base 21 has, for example, a radially outer surface portion 25. In the radial direction of the rotation center axis C1, a radially outer surface portion 25 of the joint base 21 is defined. The radially outer surface portion 25 of the coupling base 21 forms the outer peripheral surface of the coupling base 21. In the axial direction of the rotation center axis C1, a central portion of the radially outer surface portion 25 of the coupling base 21 is formed in a concave shape, for example.
The elastic member 23 is annular. For example, the elastic member 23 is formed in a ring shape extending in the circumferential direction of the rotation center axis C1. The elastic member 23 may be partially disposed in the circumferential direction of the rotation center axis C1. The elastic member 23 is disposed on the connection base 21. The elastic member 23 is disposed on the radially outer surface portion 25 of the coupling base 21. The elastic member 23 is disposed radially outward of the connection base 21. For example, the elastic member 23 is disposed at the center of the radially outer surface portion 25 of the coupling base 21 in the axial direction of the rotation center axis C1.
The elastic member 23 covers the hole 21a of the connection base 21. Specifically, the elastic member 23 is disposed at the center of the radially outer surface portion 25 of the coupling base 21 so as to cover the hole 21a of the coupling base 21 in the axial direction of the rotational center axis C1. The elastic member 23 is impermeable to air. I.e. air does not pass through the elastic member 23. The elastic member 23 has no air permeability.
In the radial direction of the rotation center axis C1, a radially outer surface portion 27 of the elastic member 23 is defined. The elastic member 23 has a recess 19 in the radially outer surface portion 27. The recess 19 extends in the circumferential direction of the rotation center axis C1. The elastic member 23 has a recess 19 extending in the circumferential direction of the rotation center axis C1 in a radially outer surface portion 27 of the elastic member 23.
For example, the elastic member 23 is disposed on the concave radially outer surface portion 25 of the coupling base 21. The elastic member 23 is provided between the pair of edge portions 19a in the axial direction of the rotation center axis C1. The elastic member 23 is disposed in a concave portion of the radially outer surface portion 25. In fig. 2 and 3, the elastic member 23 is disposed on the bottom surface 19d. The radially outer surface portion 27 is formed with a recess 19 in a state where the elastic member 23 is attached to the coupling base 21. The radially outer surface portion 27 of the elastic member 23 is disposed at a position closer to the rotation center axis C1 than the radially outer surface portion 25 of the coupling base portion 21 of the edge portion 19a in the radial direction of the rotation center axis C1. The radially outer surface portion 27 of the elastic member 23 is disposed closer to the rotation center axis C1 than the pair of edge portions 19 a.
In the radial direction of the rotation center axis C1, the shape of the radially outer surface portion 27 of the elastic member 23 may be formed as long as the bottom portion 19b of the concave portion 19 is formed at a position closer to the rotation center axis C1 than the pair of edge portions 19 a.
The elastic member 23 has a bottom 19b of the recess 19. For example, the radially outer surface portion 27 of the resilient member 23 forms the bottom 19b of the recess 19. The bottom 19b of the recess 19 is located at the radially outer surface portion 27 of the resilient member 23. The bottom 19b of the recess 19 extends in the circumferential direction of the rotation center axis C1 at the radially outer surface portion 27. In fig. 3, the bottom surface 19d of the recess 19 is located at the radially outer surface portion 27 of the elastic member 23. The bottom surface 19d here is a bottom surface defining a minimum radial distance.
The elastic member 23 is disposed on the concave radially outer surface portion 25 of the coupling base 21 in a state where the rotational center axis C1 extends in the circumferential direction, for example. The elastic member 23 is also compressible in the thickness direction defined in the radial direction of the rotational center axis C1.
In the bicycle rim 1 having the above-described structure, the minimum radial distance D defined between the edge portion 19a and the bottom surface 19D in the radial direction of the rotation center axis C1 is 2.0mm or more. The radial distance D is defined by the distance between the edge portion 19a and the portion closest to the rotation center axis C1 on the radially outer surface portion 27 of the elastic member 23 in the radial direction of the rotation center axis C1.
Here, the radially outer surface portion 27 of the elastic member 23 shows an example of a situation substantially parallel to the rotation center axis C1. Therefore, the distance between the rotation center axis C1 and the radially outer surface portion 27 is substantially constant. That is, in embodiment 1, the radial distance D is defined by the distance between the edge portion 19a and the radially outer surface portion 27 of the elastic member 23.
As shown in fig. 3, in embodiment 1, the bottom portion 19b is provided on the radially outer surface portion 27 of the elastic member 23. In embodiment 1, the radial distance D is defined by the distance between the edge portion 19a and the radially outer surface portion 27 of the elastic member 23. The radial distance D is not defined by the distance between the edge portion 19a and the radially outer surface portion 25 of the joint base portion 21 of the bottom surface 19D. In embodiment 1, the radial distance D is defined by the minimum radial distance defined by the edge portion 19a and the bottom surface 19D.
The radial distance D is preferably 4.0mm or less. That is, the bicycle rim 1 is preferably formed such that the radial distance D is in the range of 2.0mm or more and 4.0mm or less.
The radial position of the edge portion 19a when the radial distance D is obtained is the radially outermost surface portion of the edge portion 19 a. For example, in the case of fig. 3, the radial position of the edge portion 19a when the radial distance D is obtained is the radially outer surface portion 25 of the coupling base portion 21. For example, in the case of fig. 6B described later, the radial position of the edge portion 19a when the radial distance D is obtained is the radially outer surface portion 32 of the seal member 31.
When the tubeless tire 200 is mounted to the rim 1, the 1 st portion 105a or the 2 nd portion 105b of the tire 200 is placed in the recess 19. The 1 st portion 105a and the 2 nd portion 105b of the tire 200 are also referred to as tire lips.
Here, for example, the position where the 1 st part 105a or the 2 nd part 105b of the tire 200 is placed in the recess 19 is referred to as a1 st mounting position. The position on the opposite side of the 1 st mounting position in the radial direction with respect to the rotation center axis C1 is referred to as the 2 nd mounting position.
The 1 st portion 105a or the 2 nd portion 105b of the tire 200 is placed in the recess 19 at the 1 st mounting position, and the elastic member 23 is compressed when the tire 200 is stretched from the 1 st mounting position toward the 2 nd mounting position. In this case, in the 1 st mounting position, the radial distance D becomes large. Thereby, the tire 200 moves toward the 2 nd mounting position. While a margin is generated in the circumferential direction of the tire 200.
As a result, the 1 st portion 105a or the 2 nd portion 105b of the tire 200 is easily put into the recess 19 at the 2 nd mounting position. The 1 st portion 105a and the 2 nd portion 105b of the tire 200 are placed in the recess 19 over the entire circumference of the rim 1. The compression amount of the elastic member 23 is, for example, greater than 0.05mm. The compression amount of the elastic member 23 is more suitably larger than 0.1mm, for example. The compression amount of the elastic member 23 is most suitably larger than 0.2mm, for example. The compression amount of the elastic member 23 is, for example, less than 1.0mm.
The radial distance D in the state where the elastic member 23 is attached to the coupling base 21 is denoted by D1. The tire 200 is stretched from the 1 st mounting position toward the 2 nd mounting position, and the radial distance D in a state where the elastic member 23 is compressed is represented as D2. The radial distance D in a state where the 1 st portion 105a and the 2 nd portion 105b of the tire 200 are put into the recess 19 is represented as D3 over the entire circumference of the rim 1.
For example, the radial distance D3 is greater than the radial distance D1. The radial distance D3 is smaller than the radial distance D2. That is, the radial distance D3 is greater than the radial distance D1 and less than the radial distance D2. The radial distance D3 is set in this way. This facilitates the mounting operation of the tire 200 to the rim 1. Also, when air enters the tire 200, the 1 st portion 105a or the 2 nd portion 105b can be easily placed on the mounting portion 19c.
The mounting portion 19c is located between the holding portions 13, 15 and the edge portion 19 a. The mounting portion 19c is located on the radially outer surface portion 17 of the annular coupling portion 7. The mounting portion 19c is also referred to as a bead seat surface. The bead seat surface is used to retain a tire bead of a tire.
< Embodiment 2>
The basic configuration of embodiment 2 is substantially the same as that of embodiment 1. Therefore, the following is a detailed description of a structure different from embodiment 1. In embodiment 2, explanations of other embodiments will be used for the common structure with other embodiments.
As shown in fig. 4, the bicycle rim 1 includes a 1 st annular side surface portion 3, a2 nd annular side surface portion 5, and an annular connecting portion 7. The annular connecting portion 7 connects the 1 st annular side surface portion 3 and the 2 nd annular side surface portion 5 in the axial direction of the rotation center axis C1 of the bicycle rim 1.
As shown in fig. 5A, the annular connecting portion 7 connects the 1 st annular side surface portion 3 and the 2 nd annular side surface portion 5 in the axial direction of the rotation center axis C1 of the bicycle rim 1. The radially outer surface portion 17 of the annular coupling portion 7 is defined in the radial direction of the rotation center axis C1. A recess 19 having an edge 19a and a bottom 19b is formed in the radially outer surface 17 of the annular coupling portion 7 so as to extend in the circumferential direction of the rotation center axis C1. The recess 19 is formed in the radially outer surface portion 17 of the annular coupling portion 7. The recess 19 has an edge portion 19a and a bottom portion 19b. The recess 19 extends in the circumferential direction of the rotation center axis C1. Specifically, the recess 19 is annular. The recess 19 may be partially formed in the circumferential direction of the rotation center axis C1.
As shown in fig. 5A, the recess 19 has a pair of edge portions 19a and a bottom portion 19b. The edge 19a is an end of the recess 19 in the circumferential direction of the rotation center axis C1. The pair of edge portions 19a are disposed on opposite sides of the bottom portion 19b in the axial direction of the rotation center axis C1. The pair of edge portions 19a are provided on the radially outer surface portion 17 of the annular coupling portion 7. In embodiment 2, a pair of edge portions 19a are provided on, for example, a radially outer surface portion 25 of a coupling base 21 described later. The radially outer surface portion 17 of the annular coupling portion 7 includes a radially outer surface portion 25 of a coupling base 21 described later.
The bottom 19b is a portion closest to the rotation center axis C1 on the radially outer surface portion 17 of the recess 19. The region R is a region in which the elastic member 23 is disposed in the recess 19 of the annular coupling portion 7. The bottom 19b is the portion of the radially outer surface portion 17 of the region R closest to the rotation center axis C1. The radial position of the bottom 19b is a position of the radially outer surface portion 17 located radially innermost in the region R of the recess 19 in which the elastic member 23 is disposed. The radially outer surface portion 17 is a radially outer surface portion of the annular coupling portion 7. The annular connecting portion 7 includes a connecting base 21 and an elastic member 23. The annular coupling 7 may comprise a sealing member 31. In the radial direction of the rotation center axis C1, in the case where the coupling base 21, the elastic member 23, and the seal member 31 are arranged in layers, the radially outermost surface is the radially outer surface portion 17.
The bottom portion 19b is provided between the pair of edge portions 19a in the axial direction of the rotation center axis C1. The bottom 19b is provided at the center of the annular coupling portion 7 in the axial direction of the rotation center axis C1, for example. The bottom 19b is provided on the radially outer surface portion 17 of the annular coupling portion 7. For example, the radially outer surface portion 17 of the annular coupling portion 7 includes a radially outer surface portion 27 of the elastic member 23 described later. The bottom 19b is provided at the central portion of the elastic member 23, for example, in the axial direction of the rotation center axis C1. The bottom 19b is located at the radially outer surface portion 27 of the resilient member 23.
As shown in fig. 5A and 5B, the annular connecting portion 7 includes a connecting base portion 21, and the connecting base portion 21 connects the 1 st annular side surface portion 3 and the 2 nd annular side surface portion 5. The joint base 21 has, for example, a radially outer surface portion 25. The radially outer surface portion 25 of the joint base 21 is defined in the radial direction of the rotation center axis C1. The radially outer surface portion 25 of the coupling base 21 forms the outer peripheral surface of the coupling base 21. In the axial direction of the rotation center axis C1, the center portion of the radially outer surface portion 25 of the coupling base 21 is formed in a concave shape. The bottom 19b is located at the radially outer surface portion 27 of the resilient member 23.
The elastic member 23 is annular. For example, the elastic member 23 is formed in a ring shape extending in the circumferential direction of the rotation center axis C1. The elastic member 23 may be partially disposed in the circumferential direction of the rotation center axis C1. The elastic member 23 is disposed on the connection base 21. The elastic member 23 is disposed on the radially outer surface portion 25 of the coupling base 21. The elastic member 23 is disposed radially outward of the connection base 21. For example, the elastic member 23 is disposed at the center of the radially outer surface portion 25 of the coupling base 21 in the axial direction of the rotation center axis C1.
The elastic member 23 covers the hole 21a of the connection base 21. Specifically, the elastic member 23 is disposed at the center of the radially outer surface portion 25 of the coupling base 21 so as to cover the hole 21a of the coupling base 21 in the axial direction of the rotational center axis C1. The elastic member 23 is impermeable to air. I.e. air does not pass through the elastic member 23. The elastic member 23 has no air permeability.
In the radial direction of the rotation center axis C1, a radially outer surface portion 27 of the elastic member 23 is defined. The elastic member 23 has a recess 19 in the radially outer surface portion 27. The recess 19 extends in the circumferential direction of the rotation center axis C1. The elastic member 23 has a recess 19 extending in the circumferential direction of the rotation center axis C1 in the radially outer surface portion 17 and in the radially outer surface portion 25 of the elastic member 23.
The elastic member 23 has an uneven radial thickness in the radial direction of the rotation center axis C. I.e. the radial thickness of the resilient member 23 before installation is not uniform.
For example, the radial thickness of the elastic member 23 before installation is thickest at the central portion in the axial direction of the rotation center shaft C1 (refer to fig. 5A). The radial thickness of the elastic member 23 before attachment may be the thinnest at the axial center portion of the rotation center axis C1. In a state where the elastic member 23 is attached to the coupling base 21, the concave portion 19 is formed. In embodiment 2, the radial thickness of the elastic member 23 after installation is also not uniform.
The elastic member 23 before attachment may have a concave portion in the radially outer surface portion 27. The concave portion of the elastic member 23 extends in the circumferential direction of the rotation center axis C1. In this instance, when the elastic member 23 is attached to the connecting base 21, the concave portion 19 is formed. In this instance, the connecting base 21 may have a concave shape or may not have a concave shape.
For example, the elastic member 23 is disposed on the concave radially outer surface portion 25. The elastic member 23 is disposed in a concave portion of the radially outer surface portion 25. In a state where the elastic member 23 is attached to the coupling base 21, the radially outer surface portion 27 is formed with a concave portion 19. The radially outer surface portion 27 of the elastic member 23 is formed in a concave shape in the radial direction of the rotation center axis C1. Here, the radially outer surface portion 27 of the elastic member 23 is curved toward the rotation center axis C1 between the pair of edge portions 19 a.
In the radial direction of the rotation center axis C1, the shape of the radially outer surface portion 27 of the elastic member 23 may be formed as long as the bottom portion 19b of the concave portion 19 is formed at a position closer to the rotation center axis C1 than the pair of edge portions 19 a.
The elastic member 23 has a bottom 19b of the recess 19. For example, the radially outer surface portion 27 of the resilient member 23 forms the bottom 19b of the recess 19. The bottom 19b of the recess 19 is located at the radially outer surface portion 27 of the resilient member 23. The bottom 19b of the recess 19 extends in the circumferential direction of the rotation center axis C1 at the radially outer surface portion 27.
The elastic member 23 is disposed on the concave radially outer surface portion 25 of the coupling base 21 in a state of extending in the circumferential direction of the rotation center axis C1, for example. The elastic member 23 is also compressible in the thickness direction defined in the radial direction of the rotational center axis C1.
In the bicycle rim 1 having the above-described structure, the radial distance D defined by the edge portion 19a and the bottom surface 19b in the radial direction of the rotation center axis C1 is 2.0mm or more. The radial distance D is defined by the distance between the edge portion 19a and the portion of the recess 19 closest to the rotation center axis C1. The radial distance D is a distance from a portion closest to the rotation center axis C1 to the edge portion 19a in the concave portion 19.
Here, the portion of the recess 19 closest to the rotation center axis C1 is located at the radially outer surface portion 27 of the elastic member 23. I.e. the bottom 19b is located at the radially outer surface portion 27 of the resilient member 23. The elastic member 23 of the bottom 19 is disposed at a portion closest to the rotation center axis C1 of the region R of the recess 19.
The radial distance D is preferably 4.0mm or less. That is, the bicycle rim 1 is preferably formed such that the radial distance D is in the range of 2.0mm or more and 4.0mm or less.
(Modification)
Embodiment 2 above shows an example of a situation in which the 1 st holding portion 13 has the 1 st locking portion 13a and the 2 nd holding portion 15 has the 2 nd locking portion 15 a. Instead of this, the 1 st holding portion 13 and the 2 nd holding portion 15 may be configured as follows.
For example, as shown in fig. 5B, the 1 st holding portion 13 includes a1 st holding surface 13B extending radially outward of the 1 st annular side surface portion 3. The 1 st holding surface 13b may contact the tire 200. The 1 st holding surface 13b extends in the circumferential direction of the rotation center axis C1. The 1 st holding portion 13 does not have the 1 st locking portion 13a. The 2 nd holding portion 15 does not have the 2 nd locking portion 15a. That is, the structure shown in fig. 5B is a structure in which the 1 st locking portion 13a and the 2 nd locking portion 15A are deleted from the holding portion 9 of the structure shown in fig. 5A.
The 2 nd holding portion 15 includes a2 nd holding surface 15b extending radially outward of the 2 nd annular side surface portion 5. The 2 nd holding surface 15b may contact the tire 200. The 2 nd holding surface 15b extends in the circumferential direction of the rotation center axis C1. The 2 nd locking surface 15b is disposed opposite to the 1 st holding surface 13b in the axial direction of the rotation center axis C1. That is, the radially inner portion of the tire 200 is sandwiched by the 1 st holding surface 13b and the 2 nd holding surface 15b. For example, the radially inner portions of the tire 200 are the 1 st portion 105a and the 2 nd portion 105b.
< Embodiment 3>
The configuration of embodiment 3 is substantially the same as that of embodiment 2 except for the configuration of the sealing member 31. Therefore, the following is a detailed description of a structure different from embodiment 2. In embodiment 3, explanations of other embodiments will be also used for the common structure with other embodiments.
As shown in fig. 4, the bicycle rim 1 includes a 1 st annular side surface portion 3, a 2 nd annular side surface portion 5, and an annular connecting portion 7. The annular connecting portion 7 connects the 1 st annular side surface portion 3 and the 2 nd annular side surface portion 5 in the axial direction of the rotation center axis C1 of the bicycle rim 1.
As shown in fig. 6A, the annular coupling portion 7 further includes a sealing member 31 disposed between the coupling base 21 and the elastic member 23 in the radial direction of the rotation center axis C1. That is, the annular coupling portion 7 includes the coupling base 21, the elastic member 23, and the seal member 31. The sealing member 31 is impermeable to air. I.e. air does not pass through the sealing member 31. The sealing member 31 has no air permeability. The elastic member 23 allows air to penetrate. I.e. air passes through the elastic member 23. The elastic member 23 may also be impermeable to air. I.e. also air may not pass through the elastic member 23.
The annular connecting portion 7 further includes a seal member 31 disposed at least one of further outside the elastic member 23 and further inside the elastic member 23 in the radial direction of the rotation center axis C1. Here, as shown in fig. 6A, an example is shown in which the seal member 31 is disposed further inside the elastic member 23 in the radial direction of the rotation center axis C1. That is, the annular coupling portion 7 further includes a sealing member 31 disposed between the coupling base 21 and the elastic member 23 in the radial direction of the rotational center axis C1.
The sealing member 31 covers the hole 21a of the coupling base 21. Thereby, the sealing member 31 obstructs the passage of air through the hole portion 21a. The seal member 31 is disposed on the radially outer surface portion 25 of the joint base 21. The seal member 31 is disposed between the pair of edge portions 19a in the axial direction of the rotation center shaft C1. The seal member 31 extends in the circumferential direction of the rotation center axis C1.
The sealing member 31 is preferably a tape member having an adhesive face. In this instance, the sealing member 31 is attached to the connecting base 21. For example, the seal member 31 is attached to the radially outer surface portion 25 of the joint base 21 so as to cover the hole portion 21a of the joint base 21. The sealing member 31 may be a ring-shaped rubber belt member. In this instance, the seal member 31 is elastically attached to the connection base 21.
The seal member 31 is disposed between the elastic member 23 and the coupling base 21 in the axial direction of the rotation center axis C1. The radially outer surface portion 27 of the elastic member 23 is formed in a concave shape in a state of being attached to at least the coupling base 21, as in the above-described embodiment 2. Thereby, the radially outer surface portion 27 of the elastic member 23 disposed on the radially outer surface portion 32 of the seal member 31 is also formed in a concave shape.
The elastic member 23 has a non-uniform radial thickness in the radial direction of the rotation center axis C1. Likewise, the elastic member 31 has an uneven radial thickness in the radial direction of the rotation center shaft C1. In this case, the concave portion 19 is also formed in a state where the elastic member 23 and the seal member 31 are attached to the coupling base 21.
In the bicycle rim 1 having the above-described structure, the radial distance D defined by the edge portion 19a and the bottom portion 19b in the radial direction of the rotation center axis C1 is 2.0mm or more. The radial distance D is preferably 4.0mm or less. That is, the bicycle rim 1 is preferably formed such that the radial distance D is in the range of 2.0mm or more and 4.0mm or less.
As described above, the radial position of the edge 19a when the radial distance D is obtained is the radially outermost surface of the edge 19 a. In the case of fig. 6A, the radial position of the edge portion 19a when the radial distance D is obtained is the radially outer surface portion 25 of the coupling base portion 21.
(Modification)
In embodiment 3, an example of a situation in which the seal member 31 is disposed between the pair of edge portions 19a is shown. However, the sealing member 31 may be configured as follows.
For example, as shown in fig. 6B, the seal member 31 is disposed between the 1 st holding portion 13 and the 2 nd holding portion 15 in the axial direction of the rotation center axis C1. The seal member 31 is disposed on the radially outer surface portion 25 of the joint base 21.
The annular coupling portion 7 includes a mounting portion 19C axially outside the rotation center axes C1 of the pair of edge portions 19 a. The sealing member 31 extends to the mounting portion 19c. The mounting portion 19c is a portion for mounting the 1 st portion 105a and the 2 nd portion 105b of the tire 200. The mounting portion 19c is provided between the 1 st holding portion 13 and the edge portion 19 a. The mounting portion 19c is provided between the 2 nd holding portion 15 and the edge portion 19 a.
The sealing member 31 has a radially outer surface portion 32. In the radial direction of the rotation center axis C1, a radially outer surface portion 32 of the seal member 31 is defined. The pair of edge portions 19a are provided on the radially outer surface portion 17 of the annular coupling portion 7. In the modification of embodiment 3, a pair of edge portions 19a are provided on, for example, the radially outer surface portion 32 of the seal member 31.
The radially outer surface portion 17 of the recess 19 is a radially outer surface portion 27 of the resilient member 23. The bottom 19b is provided on the radially outer surface portion 27 of the elastic member 23. The radially outer surface portion 17 of the mounting portion 19c is a radially outer surface portion 32 of the seal member 31. The edge portion 19a is provided on the radially outer surface portion 32 of the seal member 31. The radially outer surface portion 17 of the annular coupling portion 7 is the radially outer surface portion 27 of the elastic member 23 and the radially outer surface portion 32 of the seal member 31. In the modification of embodiment 3, the radially outer surface portion 25 of the coupling base 21 is not the radially outer surface portion 17 of the annular coupling portion 7.
In this instance, the radial distance D defined by the edge portion 19a and the bottom portion 19b in the radial direction of the rotation center axis C1 is 2.0mm or more. The radial distance D is preferably 4.0mm or less. That is, the bicycle rim 1 is preferably formed such that the radial distance D is in the range of 2.0mm or more and 4.0mm or less.
In the modification of embodiment 3, the radial distance D is defined by the edge portion 19a of the radially outer surface portion 32 of the seal member 31 and the bottom portion 19b of the radially outer surface portion 27 of the elastic member 23 in the radial direction of the rotation center axis C1.
< Embodiment 4>
The configuration of embodiment 4 is substantially the same as that of embodiment 2 except for the configuration of the sealing member 131. Therefore, the following is a detailed description of a structure different from embodiment 2. In embodiment 4, explanations of other embodiments will be also used for the common structure with other embodiments.
As shown in fig. 4, the bicycle rim 1 includes a 1 st annular side surface portion 3, a 2 nd annular side surface portion 5, and an annular connecting portion 7. The annular connecting portion 7 connects the 1 st annular side surface portion 3 and the 2 nd annular side surface portion 5 in the axial direction of the rotation center axis C1 of the bicycle rim 1.
As shown in fig. 7A, the annular coupling portion 7 includes a seal member 131. That is, the annular coupling portion 7 includes the coupling base 21, the elastic member 23, and the seal member 131. The elastic member 23 allows air to penetrate. I.e. air passes through the elastic member 23. The elastic member 23 may also be impermeable to air. I.e. also air may not pass through the elastic member 23.
The annular coupling portion 7 further includes a seal member 131 disposed at least one of further outside the elastic member 23 and further inside the elastic member 23 in the radial direction of the rotation center axis C1. Here, as shown in fig. 7A, an example of a situation in which the seal member 131 is disposed further outside the elastic member 23 in the radial direction of the rotation center axis C1 is shown. The annular connecting portion 7 further includes a seal member 131 disposed further outside the elastic member 23 in the radial direction of the rotation center axis C1 of the bicycle rim 1. The seal member 131 is disposed further outside the elastic member 23 in the radial direction of the rotation center axis C1. That is, the annular coupling portion 7 further includes a seal member 131 disposed further outside the elastic member 23 in the radial direction of the rotation center axis C1. The elastic member 23 is disposed further outside the connection base 21 in the radial direction of the rotation center axis C1.
The elastic member 23 covers the hole 21a of the connection base 21. The sealing member 131 covers the elastic member 23. The seal member 131 is provided to cover at least the entire region of the elastic member 23 of the radially outer surface portion 17 of the annular coupling portion 7. In fig. 7A and 7B, the seal member 131 covers the entirety of the radially outer surface portion 27 of the elastic member 23. For example, in the structure shown in fig. 3, the seal member 131 covers the radially outer surface portion 27 and the entire side surface of the elastic member 23. For example, the side surfaces of the elastic member 23 are both axial side surfaces of the rotation center axis C1. Thereby, the sealing member 131 blocks the air from passing through the hole portion 21a and the elastic member 23.
The annular connecting portion 7 connects the 1 st annular side surface portion 3 and the 2 nd annular side surface portion 5 in the axial direction of the rotation center axis C1 of the bicycle rim 1, and includes an elastic member 23 and a seal member 131 disposed radially outward of the elastic member 23 in the rotation center axis C1 of the bicycle rim 1. The annular connecting portion 7 includes a connecting base portion 21, and the connecting base portion 21 connects the 1 st annular side surface portion 3 and the 2 nd annular side surface portion 5. In the radial direction of the rotation center axis C1, a radially outer surface portion 17 of the annular coupling portion 7 is defined. The radially outer surface portion 17 is formed with a recess 19 extending in the circumferential direction of the rotation center axis C1.
The annular coupling portion 7 includes a mounting portion 19C axially outside the rotation center axes C1 of the pair of edge portions 19 a. The sealing member 131 extends to the mounting portion 19c. The sealing member 131 has a radially outer surface portion 32. In the radial direction of the rotation center axis C1, a radially outer surface portion 32 of the seal member 131 is defined. The pair of edge portions 19a are provided on the radially outer surface portion 17 of the annular coupling portion 7. Thus, in embodiment 4, the edge portion 19a is provided on the radially outer surface portion 32 of the seal member 131.
The seal member 131 is disposed on the radially outer surface portion 27 of the elastic member 23 and the radially outer surface portion 25 of the coupling base 21. Specifically, the seal member 131 is disposed at the radially outer surface portion 27 of the elastic member 23 at the axial center portion of the rotation center axis C1. The axial end of the rotation center axis C1 of the seal member 131 is disposed on the radially outer surface portion 25 of the coupling base 21. The axial end of the rotation center axis C1 of the seal member 131 is disposed in the mounting portion 19C.
The seal member 131 is disposed between the 1 st holding portion 13 and the 2 nd holding portion 15 in the axial direction of the rotation center axis C1. The seal member 131 extends in the circumferential direction of the rotation center axis C1.
The sealing member 131 is preferably a tape member having an adhesive face. In this instance, the seal member 131 is attached to the radially outer surface portion 25 of the connection base 21 and the radially outer surface portion 27 of the elastic member 23. The sealing member 131 may be a ring-shaped rubber belt member. In this instance, the seal member 131 is elastically attached to the connection base 21 and the elastic member 23.
The elastic member 23 is disposed between the seal member 131 and the coupling base 21 in the radial direction of the rotation center axis C1. The radially outer surface portion 27 of the elastic member 23 is formed in a concave shape in a state of being attached to at least the coupling base 21, as in the above-described embodiments 2 and 3. Thus, the radially outer surface portion 32 of the seal member 131 disposed on the radially outer surface portion 27 of the elastic member 23 is also formed in a concave shape as in the radially outer surface portion 27 of the elastic member 23.
The elastic member 23 has a non-uniform radial thickness in the radial direction of the rotation center axis C1. Likewise, the elastic member 131 has an uneven radial thickness in the radial direction of the rotation center axis C1. In this case, too, the elastic member 23 and the sealing member 131 are formed in a concave shape in a state of being attached to the connecting base 21.
The pair of edge portions 19a are provided on the radially outer surface portion 17 of the annular coupling portion 7. In embodiment 4, a pair of edge portions 19a are provided on the radially outer surface portion 32 of the seal member 131, for example. The bottom 19b is provided on the radially outer surface portion 17 of the annular coupling portion 7. In embodiment 4, the bottom 19b is provided on the radially outer surface portion 32 of the seal member 131, for example. For example, in the axial direction of the rotation center axis C1, the bottom 19b is provided at the center of the radially outer surface portion 32 of the seal member 131.
In the bicycle rim 1 having the above-described structure, the radial distance D defined by the edge portion 19a and the bottom portion 19b in the radial direction of the rotation center axis C1 is 2.0mm or more. The radial distance D is preferably 4.0mm or less. That is, the bicycle rim 1 is preferably formed such that the radial distance D is in the range of 2.0mm or more and 4.0mm or less.
As described above, the radial position of the edge 19a when the radial distance D is obtained is the radially outermost surface of the edge 19 a. In embodiment 4, a pair of edge portions 19a are provided on the radially outer surface portion 32 of the seal member 131, for example. As described above, the radial position of the bottom 19b when the radial distance D is obtained is the radially outermost surface portion of the bottom 19 b. In embodiment 4, the bottom 19b is provided on the radially outer surface portion 32 of the seal member 131, for example.
(Modification)
In embodiment 4, an example is shown in which the sealing member 131 is disposed between the 1 st holding portion 13 and the 2 nd holding portion 15. However, the sealing member 131 may be configured as follows.
For example, as shown in fig. 7B, the seal member 131 is disposed between the pair of edge portions 19a in the axial direction of the rotation center axis C1. The seal member 131 and the elastic member 23 are disposed between the pair of edge portions 19a in the axial direction of the rotation center axis C1. The seal member 131 and the elastic member 23 are disposed inside the pair of edge portions 19a in the radial direction of the rotation center axis C1. I.e. the sealing member 131 does not extend to the pair of edge portions 19a.
The pair of edge portions 19a are provided on the radially outer surface portion 17 of the annular coupling portion 7. In the modification of embodiment 4, a pair of edge portions 19a are provided on the radially outer surface portion 25 of the coupling base 21, for example. The bottom 19b is provided on the radially outer surface portion 17 of the annular coupling portion 7. In the modification of embodiment 4, the bottom portion 19b is provided on the radially outer surface portion 32 of the seal member 131, for example.
The sealing member 131 covers the elastic member 23. The seal member 131 is provided to cover at least the entire region of the elastic member 23 of the radially outer surface portion 17 of the annular coupling portion 7. The seal member 131 covers the entirety of the radially outer surface portion 27 of the elastic member 23. Thereby, the sealing member 131 blocks the air from passing through the hole portion 21a and the elastic member 23.
In this instance, the radial distance D defined by the edge portion 19a and the bottom portion 19b in the radial direction of the rotation center axis C1 is 2.0mm or more. The radial distance D is preferably 4.0mm or less. That is, the bicycle rim 1 is preferably formed such that the radial distance D is in the range of 2.0mm or more and 4.0mm or less.
In the modification of embodiment 4, the radial distance D is defined by the edge portion 19a of the radially outer surface portion 25 of the joint base 21 and the bottom portion 19b of the radially outer surface portion 32 of the seal member 131 in the radial direction of the rotation center axis C1.
< Other embodiments >
Although the above description has been made with respect to one embodiment of the present invention, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
(A) In embodiments 3 and 4, the situation where the 1 st locking portion 13a and the 2 nd locking portion 15a lock the tire 200 is shown. The rim having the locking portions 13a, 15a is also called a hook rim. Instead of this, the tire 200 may be held by the 1 st holding surface 13B and the 2 nd holding surface 15B shown in fig. 5B. The 1 st holding portion 13 does not have the 1 st locking portion 13a. Similarly, the 2 nd holding portion 15 does not have the 2 nd locking portion 15a. The rim having the locking portions 13a, 15a is also called a straight rim.
(B) In embodiments 1 to 4, an example of a case where the elastic member 23 is formed in a ring shape is shown. Instead of this, the elastic member 23 may be formed in an arc shape. In this instance, at least one arcuate elastic member 23 is disposed radially outward of the connecting base 21. For example, a plurality of arcuate elastic members 23 may be arranged in series or at intervals in the circumferential direction of the rotation center axis C1.
Description of the reference numerals
Rim for bicycle
3 St annular side surface portion
5 Nd annular side surface portion
7 Annular connecting portion
9 Holding part
131 St holding portion
13A 1 st locking part
13B 1 st holding surface
15 (2 Nd holding part)
15A 2 nd locking part
15B 2 nd holding surface
17 Radially outer surface portion of annular connecting portion
19 Concave portion
19A edge portion
19B bottom part
19C mounting portion
19D bottom surface
19E side face
21 Connecting base
21A hole portion
23 Elastic member
25 Radially outer surface portion of the joint base
27 Radially outer surface portion of elastic member
31,131 Sealing member
100 Wheel
101 Spoke
102 Wheel hub
105A part 1
105B part 2
200 Tyre
C1, center of rotation axis
D, D1, D2, D3 radial distance.
Claims (23)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411062844.9A CN118752942A (en) | 2020-12-24 | 2020-12-24 | Bicycle rims |
| CN202011547613.9A CN114670582B (en) | 2020-12-24 | 2020-12-24 | Bicycle rim |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011547613.9A CN114670582B (en) | 2020-12-24 | 2020-12-24 | Bicycle rim |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411062844.9A Division CN118752942A (en) | 2020-12-24 | 2020-12-24 | Bicycle rims |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114670582A CN114670582A (en) | 2022-06-28 |
| CN114670582B true CN114670582B (en) | 2024-12-06 |
Family
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411062844.9A Pending CN118752942A (en) | 2020-12-24 | 2020-12-24 | Bicycle rims |
| CN202011547613.9A Active CN114670582B (en) | 2020-12-24 | 2020-12-24 | Bicycle rim |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411062844.9A Pending CN118752942A (en) | 2020-12-24 | 2020-12-24 | Bicycle rims |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN118752942A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6155651A (en) * | 1998-08-08 | 2000-12-05 | Inoac Elastomer Co. Ltd. | Bicycle spoke rim wheel for tubeless tire |
| CN1373056A (en) * | 2001-02-28 | 2002-10-09 | 株式会社岛野 | Rim of bicycle |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3605439B2 (en) * | 1995-06-15 | 2004-12-22 | 本田技研工業株式会社 | Air seal device for spoke wheels for tubeless tires |
| FR2847202B1 (en) * | 2002-11-20 | 2005-02-25 | Mavic Sa | RIM BACKGROUND FOR EQUIPPING A BICYCLE RIM |
| US7431404B2 (en) * | 2005-08-05 | 2008-10-07 | Shimano Inc. | Bicycle having annular sealing member |
| ITMI20072232A1 (en) * | 2007-11-26 | 2009-05-27 | Campagnolo Srl | RIM FOR BICYCLE WHEEL AND BICYCLE WHEEL INCLUDING SUCH RIM |
| FR2948319B1 (en) * | 2009-07-22 | 2012-01-06 | Salomon Sas | INTERFACE LINING FOR CYCLE WHEEL AND CYCLE WHEEL HAVING SUCH A TRIM |
| WO2012007991A1 (en) * | 2010-07-14 | 2012-01-19 | エキセルリム株式会社 | Rim for tubeless tire |
| CN204055154U (en) * | 2014-07-28 | 2014-12-31 | 上海康适达轮圈有限公司 | Spoke type inner tube-free wheel |
| DE102016225553A1 (en) * | 2016-12-20 | 2018-06-21 | Continental Reifen Deutschland Gmbh | Felgenband |
-
2020
- 2020-12-24 CN CN202411062844.9A patent/CN118752942A/en active Pending
- 2020-12-24 CN CN202011547613.9A patent/CN114670582B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6155651A (en) * | 1998-08-08 | 2000-12-05 | Inoac Elastomer Co. Ltd. | Bicycle spoke rim wheel for tubeless tire |
| CN1373056A (en) * | 2001-02-28 | 2002-10-09 | 株式会社岛野 | Rim of bicycle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN118752942A (en) | 2024-10-11 |
| CN114670582A (en) | 2022-06-28 |
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