CN114670582A - bicycle rims - Google Patents

Abstract

A rim (1) for a bicycle, which enables a tire (200) to be easily mounted. A tire (200) is mounted on a rim (1) for a bicycle. A bicycle rim (1) is provided with: a1 st annular side surface part (3), a 2 nd annular side surface part (5), and an annular connecting part (7). The annular connecting part (7) is used for connecting the 1 st annular side part (3) and the 2 nd annular side part (5). The annular coupling portion (7) includes an elastic member (23). A recess (19) is formed in a radially outer surface portion (17) of the annular coupling portion (7), and the recess (19) has an edge portion (19a) and a bottom surface (19 b). The minimum radial distance (D) defined by the edge (19a) and the bottom surface (19b) in the radial direction is 2.0mm or more.

Description

bicycle rims

technical field

The present invention relates to a bicycle rim.

Background technique

Patent Document 1 discloses a bicycle rim. The bicycle rim is connected to the hub via a plurality of spokes. A hole portion through which a pipe joint is inserted is provided in a known bicycle rim. The hole is covered with an adhesive tape. In this state, the tubeless tire is attached to the bicycle rim.

Patent Document 1: EP2583835A1.

Generally, a rim corresponding to a tubeless tire is provided with a groove portion in the center portion. When the tubeless tire is mounted on the rim, the tire bead is placed in the groove portion. By placing the tire bead in the groove portion, a margin is created in the circumferential direction of the tire, so that the tire can be easily mounted. However, if the groove portion is deep, it becomes difficult for the tire bead to bear on the bead seat surface when air enters the tire.

SUMMARY OF THE INVENTION

An object of the present invention is to provide a bicycle rim in which a tire can be easily mounted.

According to the first aspect of the present invention, a tire is attached to a bicycle rim. The bicycle rim includes a first annular side surface portion, a second annular side surface portion, and an annular connecting portion. The annular connecting portion connects the first annular side surface portion and the second annular side surface portion in the axial direction of the rotation center axis of the bicycle rim. The annular connection 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 concave portion extending in the circumferential direction of the rotation center axis and having an edge portion and a bottom surface is formed on the radially outer surface portion of the annular connecting portion. The minimum radial distance defined by the edge portion and the bottom surface in the radial direction is 2.0 mm or more.

In the bicycle rim of the first aspect, since the annular connecting portion includes the elastic member, it is easy to attach the tire to the bicycle rim. In this bicycle rim, since the minimum radial distance is 2.0 mm or more, the tire can be easily attached to the bicycle rim.

According to a second aspect of the present invention, in the bicycle rim of the first aspect, the radial distance is 4.0 mm or less.

In the bicycle rim of the second aspect, by setting the radial distance to 4.0 mm or less, the tire can be easily attached to the bicycle rim.

In a third aspect of the present invention, in the bicycle rim of the first or second aspect, the bottom surface of the recessed portion is positioned on the radially outer surface portion of the elastic member.

In the bicycle rim of the third aspect, by positioning the bottom surface of the concave portion on the radially outer surface portion of the elastic member, the tire can be easily attached to the bicycle rim.

According to a fourth aspect of the present invention, the bicycle rim according to any one of the first to third aspects is configured as follows. The annular connecting portion includes a connecting base for connecting the first annular side surface portion and the second annular side surface portion. The elastic member is arranged on the radially outer side of the connection base.

In the bicycle rim of the fourth aspect, by arranging the elastic member on the radially outer side of the connection base, the tire can be easily attached to the bicycle rim.

According to a fifth aspect of the present invention, in the bicycle rim of the fourth aspect, the annular connecting portion further includes a sealing member disposed between the connecting base portion and the elastic member in the radial direction.

The bicycle rim of the fifth aspect further includes a sealing member, so that the hole portion through which the pipe joint is inserted can be properly sealed.

According to a sixth aspect of the present invention, in the bicycle rim of the fifth aspect, the annular connecting portion includes a mounting portion on the outer side in the axial direction of the rotation center axis of the pair of edge portions. The sealing member extends to the mounting portion.

In the bicycle rim of the sixth aspect, since the sealing member extends to the attachment portion, the hole portion through which the pipe fitting is inserted can be more appropriately sealed.

According to a seventh aspect of the present invention, in the bicycle rim according to any one of the first to fourth aspects, the annular connecting portion further includes a sealing member disposed radially outside the elastic member.

In the bicycle rim of the seventh aspect, since the sealing member is disposed radially outward of the elastic member, the hole portion through which the pipe joint is inserted can be more appropriately sealed by the sealing member via the elastic member.

According to an eighth aspect of the present invention, in the bicycle rim of the seventh aspect, the annular connecting portion includes a mounting portion on the outer side in the axial direction of the rotation center axis of the pair of edge portions. The sealing member extends to the mounting portion.

In the bicycle rim of the eighth aspect, since the sealing member extends to the attachment portion, the hole portion through which the pipe joint is inserted can be more appropriately sealed.

According to a ninth aspect of the present invention, a tire is attached to a bicycle rim. The bicycle rim includes a first annular side surface portion, a second annular side surface portion, and an annular connecting portion. The annular connecting portion connects the first annular side surface portion and the second annular side surface portion in the axial direction of the rotation center axis of the bicycle rim. The annular connection portion includes an elastic member.

In the radial direction of the rotation center axis, the radial outer surface portion of the annular connecting portion is defined. A concave portion extending in the circumferential direction of the rotation center axis and having an edge portion and a bottom portion is formed on the radially outer surface portion of the annular connecting portion. The radial distance defined by the edge portion and the bottom portion in the radial direction is 2.0 mm or more.

In the bicycle rim of the ninth aspect, since the annular connecting portion includes the elastic member, it is easy to attach the tire to the bicycle rim. In this bicycle rim, since the radial distance is 2.0 mm or more, the tire can be easily mounted on the bicycle rim.

A tenth aspect of the present invention, in the bicycle rim of the ninth aspect, is configured as follows. The bottom portion is the portion closest to the rotation center axis among the regions where the elastic member is arranged in the recessed portion.

The bicycle rim according to the tenth aspect defines a radial distance from the bottom portion in the radial direction via the edge portion. With this structure, the tire can be more easily attached to the bicycle rim.

According to an eleventh aspect of the present invention, in the bicycle rim of the ninth or tenth aspect, the radial distance is 4.0 mm or less.

In the bicycle rim of the eleventh aspect, by setting the radial distance to 4.0 mm or less, the tire can be easily attached to the bicycle rim.

According to a twelfth aspect of the present invention, in the bicycle rim according to any one of the ninth to eleventh aspects, the bottom portion is located on the radially outer surface portion of the elastic member.

In the bicycle rim of the twelfth aspect, the tire can be easily attached to the bicycle rim by positioning the bottom portion on the radially outer surface portion of the elastic member.

According to a thirteenth aspect of the present invention, in the bicycle rim according to any one of the ninth to twelfth aspects, the configuration is as follows. The annular connecting portion includes a connecting base for connecting the first annular side surface portion and the second annular side surface portion. The elastic member is arranged on the radially outer side of the connection base.

In the bicycle rim of the thirteenth aspect, by arranging the elastic member on the outer side in the radial direction of the connection base, the tire can be easily attached to the bicycle rim.

According to a fourteenth aspect of the present invention, in the bicycle rim of the thirteenth aspect, the annular connecting portion further includes a sealing member disposed in the radial direction between the connecting base portion and the elastic member.

The bicycle rim of the fourteenth aspect further includes a sealing member, so that the hole portion through which the pipe fitting is inserted can be properly sealed.

According to a fifteenth aspect of the present invention, in the bicycle rim of the fourteenth aspect, the annular connecting portion includes a mounting portion on the outer side in the axial direction of the rotation center axis of the pair of edge portions. The sealing member extends to the mounting portion.

In the bicycle rim of the fifteenth aspect, since the sealing member extends to the attachment portion, the hole portion through which the pipe joint is inserted can be more appropriately sealed.

According to a sixteenth aspect of the present invention, in the bicycle rim according to any one of the ninth to thirteenth aspects, the annular connecting portion further includes a sealing member disposed radially outside the elastic member.

In the bicycle rim of the sixteenth aspect, since the sealing member is arranged radially outward of the elastic member, the hole portion through which the pipe joint is inserted can be more appropriately sealed by the sealing member via the elastic member.

According to a seventeenth aspect of the present invention, in the bicycle rim of the sixteenth aspect, the annular connecting portion includes a mounting portion on the outer side in the axial direction of the rotation center axis of the pair of edge portions. The sealing member extends to the mounting portion.

In the bicycle rim of the seventeenth aspect, since the sealing member extends to the attachment portion, the hole portion through which the pipe joint is inserted can be more appropriately sealed.

According to an eighteenth aspect of the present invention, a tire is attached to a bicycle rim. The bicycle rim includes a first annular side surface portion, a second annular side surface portion, and an annular connecting portion. The annular connecting portion connects the first annular side surface portion and the second annular side surface portion in the axial direction of the 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 the radial direction of the rotation center axis of the bicycle rim.

In the bicycle rim of the eighteenth aspect, since the annular connecting portion includes the elastic member, it is easy to attach the tire to the bicycle rim. Since the sealing member is arranged radially outward of the elastic member, the hole portion through which the pipe joint is inserted can be more appropriately sealed by the sealing member via the elastic member.

A nineteenth aspect of the present invention, in the bicycle rim of the eighteenth aspect, is configured as follows. In the radial direction, the radially outer surface portion of the annular connecting portion is defined. A recessed portion extending in the circumferential direction toward the rotation center axis is formed on the radially outer surface portion.

In the bicycle rim of the nineteenth aspect, since the recessed portion extends in the circumferential direction on the radially outer surface portion, the sealing member and the elastic member can be easily arranged in the circumferential direction.

A twentieth aspect of the present invention, in the bicycle rim of the eighteenth or nineteenth aspect, is configured as follows. The annular connecting portion includes a connecting base for connecting the first annular side surface portion and the second annular side surface portion. The elastic member is arranged on the outer side of the connection base in the radial direction.

In the bicycle rim of the twentieth aspect, the tire can be easily attached to the bicycle rim by arranging the elastic member on the radially outer side of the connection base.

According to a twenty-first aspect of the present invention, a tire is attached to a bicycle rim. The bicycle rim includes a first annular side surface portion, a second annular side surface portion, and an annular connecting portion. The annular connecting portion connects the first annular side surface portion and the second annular side surface portion in the axial direction of the rotation center axis of the bicycle rim. The annular connection 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. The elastic member has a non-uniform radial thickness in the radial direction. The elastic member has a recessed portion extending in the circumferential direction toward the rotation center axis on the radially outer surface portion of the annular connecting portion and on the radially outer surface portion of the elastic member.

In the bicycle rim of the twenty-first aspect, the annular connecting portion includes an elastic member. The elastic member has a concave portion extending in the circumferential direction on the radially outer surface portion. Thereby, the tire can be more easily attached to the bicycle rim.

According to a 22nd aspect of the present invention, in the bicycle rim of the 21st aspect, the annular connecting portion further includes a sealing member disposed radially further outside the elastic member and further inside the elastic member.

In the bicycle rim of the 22nd aspect, since the sealing member is arranged on the outer side of the elastic member and/or the inner side of the elastic member, the hole portion through which the pipe joint is inserted can be more appropriately sealed.

According to a 23rd aspect of the present invention, in the bicycle rim according to any one of the 5th to 8th, 14th to 20th, and 22nd aspects, the sealing member is a tape member having an adhesive surface.

In the bicycle rim of the 23rd aspect, since the sealing member is a tape member having an adhesive surface, it is easy to attach the sealing member to the target member.

According to a 24th aspect of the present invention, in the bicycle rim of any one of the fifth to eighth, the fourteenth to 20th, and the 22nd aspect, the sealing member is an annular rubber band member.

In the bicycle rim of the twenty-fourth aspect, since the sealing member is an annular rubber band member, it is easy to attach the sealing member to the target member.

According to a 25th aspect of the present invention, in the bicycle rim of any one of the 5th to 8th, 14th to 20th, and 22nd to 24th aspects, the elastic member allows air to penetrate.

In the bicycle rim of the twenty-fifth aspect, since the elastic member allows air to penetrate, the elastic member can be reduced in weight.

According to a twenty-sixth aspect of the present invention, in the bicycle rim according to any one of the first to twenty-fourth aspects, the elastic member cannot allow air to pass through.

In the bicycle rim of the twenty-sixth aspect, since the elastic member does not allow air to penetrate, the tire can be prevented from being flat by the elastic member.

According to a twenty-seventh aspect of the present invention, in the bicycle rim according to any one of the first to twenty-sixth aspects, the elastic member is annular.

In the bicycle rim of the twenty-seventh aspect, since the elastic member is annular, it is easy to arrange the elastic member on the target member.

According to a twenty-eighth aspect of the present invention, in the bicycle rim according to any one of the first to twenty-seventh aspects, the recessed portion is annular.

In the bicycle rim of the twenty-eighth aspect, since the concave portion is annular, it is easy to mount the tire.

According to a twenty-ninth aspect of the present invention, in the bicycle rim according to any one of the first to twenty-eighth aspects, at least one of the first annular side surface portion, the second annular side surface portion, and the annular connecting portion includes a non-metallic material .

In the bicycle rim of the twenty-ninth aspect, since at least one of the first annular side surface portion, the second annular side surface portion, and the annular connecting portion includes a non-metallic material, the bicycle rim can be reduced in weight.

According to a 30th aspect of the present invention, in the bicycle rim of the 29th aspect, the non-metallic material is a composite fiber material.

In the bicycle rim of the 30th aspect, since the non-metallic material is a composite fiber material, the weight of the bicycle rim can be reduced.

According to a thirty-first aspect of the present invention, in the bicycle rim according to any one of the first to twenty-eighth aspects, at least one of the first annular side surface portion, the second annular side surface portion, and the annular connecting portion includes a metal material.

In the bicycle rim of the 31st aspect, since at least one of the first annular side surface portion, the second annular side surface portion, and the annular connecting portion includes a metal material, the rigidity of the bicycle rim can be appropriately ensured.

According to a 32nd aspect of the present invention, in the bicycle rim of the 31st aspect, the metal material is aluminum.

In the bicycle rim of the 32nd aspect, since the metal material is aluminum, the rigidity of the bicycle rim and the weight reduction of the bicycle rim can be achieved at the same time.

According to a 33rd aspect of the present invention, in the bicycle rim according to any one of the first to 32nd aspects, the configuration is as follows. The first annular side surface portion and the second annular side surface portion each have a holding portion provided along the outer peripheral edge for holding the tire.

The bicycle rim of the 33rd aspect can appropriately hold the tire by the respective holding portions of the first annular side surface portion and the second annular side surface portion.

A 34th aspect of the present invention, in the bicycle rim of the 33rd aspect, is configured as follows. The holding portion includes a first holding portion arranged on the radially outer side of the first annular side surface portion, and a second holding portion arranged on the radially outer side of the second annular side surface portion.

The bicycle rim of the thirty-fourth aspect can appropriately hold the tire by the first holding portion and the second holding portion.

A 35th aspect of the present invention, in the bicycle rim of the 34th aspect, is configured as follows. The first holding portion includes a first holding surface extending radially outward of the first annular side surface portion. The second holding portion includes a second holding surface extending radially outward of the second annular side surface portion.

According to the bicycle rim of the 35th aspect, the tire can be appropriately held by the first holding surface of the first holding portion and the second holding surface of the second holding portion.

A 36th aspect of the present invention, in the bicycle rim of the 34th or 35th aspect, is structured as follows. The first holding portion includes a first locking portion disposed on the radially outer side of the first annular side surface portion. The second holding portion includes a second locking portion disposed on the radially outer side of the second annular side surface portion.

The bicycle rim of the thirty-sixth aspect can appropriately hold the tire by the first locking portion of the first holding portion and the second locking portion of the second holding portion.

Invention effect

The bicycle rim of the present invention can easily mount a tire.

Description of drawings

FIG. 1 is a front view of the bicycle wheel according to the first embodiment.

FIG. 2 is a cross-sectional view of the bicycle rim according to the first embodiment (section line II-II in FIG. 1 ).

3 is a partially enlarged cross-sectional view of the bicycle rim of the first embodiment.

4 is a cross-sectional view of a bicycle rim according to the second to fourth embodiments (section line IV-IV in FIG. 3 ).

5A is a partially enlarged cross-sectional view of a bicycle rim according to the second embodiment.

5B is a partially enlarged cross-sectional view of a bicycle rim according to a modification of the second embodiment.

6A is a partially enlarged cross-sectional view of a bicycle rim of a third embodiment.

6B is a partially enlarged cross-sectional view of a bicycle rim according to a modification of the third embodiment.

7A is a partially enlarged cross-sectional view of a bicycle rim according to a fourth embodiment.

7B is a partially enlarged cross-sectional view of a bicycle rim according to a modification of the fourth embodiment.

Detailed ways

<First Embodiment>

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 connected 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 an annular shape. A tire 200 is attached to 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 first annular side surface portion 3 , a second annular side surface portion 5 , and an annular connecting portion 7 . At least one of the first annular side surface portion 3 , the second annular side surface portion 5 , and the annular connecting portion 7 is made of a non-metallic material. The non-metallic material is, for example, a composite fiber material. The composite fiber material is formed by combining, for example, a base material, that is, a resin and fibers. Composite fiber materials are characterized by light weight and high strength. In the present embodiment, the first annular side surface portion 3 , the second annular side surface portion 5 , and the annular connecting portion 7 are each formed of a non-metallic material.

Here, at least one of the first annular side surface portion 3 , the second 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 first annular side surface portion 3 , the second annular side surface portion 5 , and the annular connecting portion 7 may each be formed of a metal material. The first annular side surface portion 3 , the second annular side surface portion 5 , and the annular connecting portion 7 may be formed of a metal material or a non-metallic material, respectively.

As shown in FIG. 1 , the first annular side surface portion 3 extends in the circumferential direction of the rotation center axis C1. For example, the first annular side surface portion 3 is formed in an annular shape. The second annular side surface portion 5 extends in the circumferential direction of the rotation center axis C1. For example, the second annular side surface portion 5 is formed in an annular shape. The second annular side surface portion 5 is arranged to face the first 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 second annular side surface portion 5 is connected to the radially inner portion of the rotation center axis C1 of the first annular side surface portion 3 . The spokes 101 are attached to the portion where the first annular side surface portion 3 and the second annular side surface portion 5 are connected. Hereinafter, the radial direction refers to the radial direction of the rotation center axis C1. The circumferential direction indicates the circumferential direction of the rotation center axis C1.

As shown in FIGS. 1 and 2 , the first annular side surface portion 3 and the second 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 edges of the first annular side surface portion 3 and the second annular side surface portion 5 . The first annular side surface portion 3 and the second 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 the radially inner portion of the tire 200 . The holding portion 9 includes a first holding portion 13 and a second holding portion 15 . The first holding portion 13 is arranged on the radially outer side of the first annular side surface portion 3 . The second holding portion 15 is arranged on the radially outer side of the second annular side surface portion 5 . The holding portion 9 includes a first holding portion 13 arranged on the radially outer side of the first annular side surface portion 3 , and a second holding portion 15 arranged on the radially outer side of the second annular side surface portion 5 .

As shown in FIGS. 2 and 3 , the first holding portion 13 is provided on the radially outer portion of the first annular side surface portion 3 . As shown in FIG. 3 , the first holding portion 13 includes a first locking portion 13a. The first locking portion 13 a is arranged on the radially outer side of the first holding portion 13 . The 1st locking part 13a is arrange|positioned at the radial direction outer side of the 1st holding surface 13b. The first locking portion 13 a is arranged on the radially outer side of the first annular side surface portion 3 . The first holding portion 13 includes a first locking portion 13 a disposed radially outward of the first annular side surface portion 3 . The first locking portion 13a is for locking the first portion 105a of the tire 200 . The first portion 105a is located radially inward of the tire 200 . The first portion 105a is also referred to as a tire bead portion. The first locking portion 13a extends in the circumferential direction of the rotation center axis C1. The first locking portion 13 a protrudes toward the second holding portion 15 . The first locking portion 13a protrudes in parallel with the rotation center axis C1.

As shown in FIGS. 2 and 3 , the second holding portion 15 is provided on the radially outer portion of the second annular side surface portion 5 . As shown in FIG. 3 , the second holding portion 15 includes a second locking portion 15a. The second locking portion 15 a is arranged on the radially outer side of the second holding portion 15 . The 2nd locking part 15a is arrange|positioned at the radial direction outer side of the 2nd holding surface 15b. The second locking portion 15 a is arranged on the radially outer side of the second annular side surface portion 5 . The second holding portion 15 includes a second locking portion 15 a disposed radially outward of the second annular side surface portion 5 . The second locking portion 15a is for locking the second portion 105b of the tire 200 . The second portion 105b is located radially inward of the tire 200 . The second portion 105b is also referred to as a tire bead portion. The second locking portion 15a extends in the circumferential direction of the rotation center axis C1. The second locking portion 15 a protrudes toward the first holding portion 13 . The second locking portion 15a protrudes in parallel with the rotation center axis C1.

The second locking portion 15a is arranged to face the first 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 first locking portion 13a and the second locking portion 15a. For example, the first portion 105a is locked by the first locking portion 13a. The second portion 105b is locked by the second locking portion 15a.

As shown in FIG. 2 , the annular connecting portion 7 connects the first annular side surface portion 3 and the second 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 connecting portion 7 is defined in the radial direction of the rotation center axis C1 . The radially outer surface portion 17 of the annular connecting portion 7 is formed with a concave portion 19 extending in the circumferential direction of the rotation center axis C1 and having an edge portion 19a and a bottom portion 19b. The concave portion 19 is formed on the radially outer surface portion 17 of the annular connecting portion 7 . The concave portion 19 has an edge portion 19a and a bottom portion 19b. In 1st Embodiment, the recessed part 19 has the bottom surface 19d and the side surface 19e. The concave portion 19 extends in the circumferential direction of the rotation center axis C1. Specifically, the concave portion 19 is annular. The concave portion 19 may be partially formed in the circumferential direction of the rotation center axis C1.

As shown in FIG. 3, the recessed part 19 has a pair of edge part 19a and a bottom part 19b. The edge portion 19a is an end portion of the recessed portion 19 in the circumferential direction of the rotation center axis C1. A pair of edge parts 19a are arrange|positioned on the opposite side with respect to the bottom part 19b in the axial direction of the rotation center axis C1. A pair of edge portions 19 a are provided on the radially outer surface portion 17 of the annular connecting portion 7 . In 1st Embodiment, a pair of edge part 19a is provided in the radially outer surface part 25 of the connection base part 21 mentioned later, for example. The radially outer surface portion 17 of the annular connection portion 7 includes a radially outer surface portion 25 of the connection base portion 21 to be 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 portion 19b is the portion closest to the rotation center axis C1 on the radially outer surface portion 17 of the recessed portion 19 . The bottom portion 19 is a portion closest to the rotation center axis C1 in the region R of the recessed portion 19 where the elastic member 23 is arranged. The bottom portion 19 is the portion closest to the rotation center axis C1 among the regions where the recessed portion 19 of the elastic member 23 is arranged. The bottom portion 19b is the portion closest to the rotation center axis C1 among the regions R of the recessed portion 19 where the elastic members 23 are arranged. The region R represents the range between both ends of the elastic member 23 in the axial direction of the rotation center axis C1.

The radial position of the bottom portion 19b is on the radially outermost surface of the region R of the recessed portion 19 where the elastic member 23 is arranged. The bottom portion 19b is provided on the radially outer surface portion 17 of the annular connecting portion 7 . For example, the radially outer surface portion 17 of the annular connecting portion 7 includes the radially outer surface portion 27 of the elastic member 23 to be described later. The bottom portion 19b here is defined as the center 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 FIGS. 2 and 3 , the concave portion 19 includes a bottom surface 19d and a side surface 19e. The bottom portion 19d is provided between the pair of edge portions 19a in the axial direction of the rotation center axis C1. The bottom portion 19d is provided on the radially outer surface portion 17 of the annular connecting portion 7 . Bottom surface 19d includes bottom portion 19b. In the first embodiment, the bottom surface 19d includes the radially outer surface portion 25 of the connection base portion 21 and the radially outer surface portion 27 of the elastic member 23 . The radially outer surface part 25 of the connection base part 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 surface which connects the edge part 19a and the bottom surface 19d. The bottom portion 19e is provided between the pair of edge portions 19a in the axial direction of the rotation center axis C1. The bottom portion 19e is provided, for example, on the radially outer surface portion 17 of the annular connecting portion 7 . The bottom portion 19d is provided 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 for connecting the first annular side surface portion 3 and the second annular side surface portion 5 . The annular connecting portion 7 includes an elastic member 23 . Specifically, the annular connecting portion 7 includes the connecting base portion 21 and the elastic member 23 . The connection base portion 21 is used to connect the first annular side surface portion 3 and the second 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 connection base 21 is provided with a hole 21a through which the pipe joint is inserted. The hole portion 21a penetrates the connection base portion 21 in the radial direction of the rotation center axis C1.

The connection base portion 21 has, for example, a radially outer surface portion 25 . In the radial direction of the rotation center axis C1, the radial outer surface portion 25 of the connection base portion 21 is defined. The radially outer surface portion 25 of the connection base portion 21 forms the outer peripheral surface of the connection base portion 21 . The central portion of the radially outer surface portion 25 of the connection base portion 21 is formed, for example, in a concave shape in the axial direction of the rotation center axis C1.

The elastic member 23 is annular. For example, the elastic member 23 is formed in an annular shape extending in the circumferential direction of the rotation center axis C1. The elastic member 23 may be partially arranged in the circumferential direction of the rotation center axis C1. The elastic member 23 is arranged on the connection base 21 . The elastic member 23 is arranged on the radially outer surface portion 25 of the connection base portion 21 . The elastic member 23 is arranged on the radially outer side of the connection base 21 . For example, in the axial direction of the rotation center axis C1 , the elastic member 23 is arranged at the center portion of the radially outer surface portion 25 of the connection base portion 21 .

The elastic member 23 covers the hole portion 21 a of the connection base portion 21 . Specifically, the elastic member 23 covers the hole 21 a of the connection base 21 in the axial direction of the rotation center axis C1 , and is arranged at the center of the radially outer surface portion 25 of the connection base 21 . The elastic member 23 cannot allow air to penetrate. That is, air does not pass through the elastic member 23 . The elastic member 23 does not have air permeability.

In the radial direction of the rotation center axis C1, the radial outer surface portion 27 of the elastic member 23 is defined. The elastic member 23 has the concave portion 19 on the radially outer surface portion 27 . The concave portion 19 extends in the circumferential direction of the rotation center axis C1. The elastic member 23 has a recessed portion 19 extending in the circumferential direction of the rotation center axis C1 on the radially outer surface portion 27 of the elastic member 23 .

For example, the elastic member 23 is arranged on the concave radial outer surface portion 25 of the connection 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 arranged in the concave portion of the radially outer surface portion 25 . In FIGS. 2 and 3 , the elastic member 23 is arranged on the bottom surface 19d. In a state where the elastic member 23 is attached to the connection base 21 , the radially outer surface portion 27 is formed with the recessed portion 19 . The radially outer surface portion 27 of the elastic member 23 is arranged at a position closer to the rotation center axis C1 than the radially outer surface portion 25 of the connection base 21 of the edge portion 19 a in the radial direction of the rotation center axis C1 . The radially outer surface portion 27 of the elastic member 23 is arranged at a position closer to the rotation center axis C1 than the pair of edge portions 19a.

In the radial direction of the rotation center axis C1, if the bottom portion 19b of the recessed portion 19 is formed at a position closer to the rotation center axis C1 than the pair of edge portions 19a, how is the shape of the radially outer surface portion 27 of the elastic member 23 formed? It will be all right.

The elastic member 23 has the bottom portion 19b of the recessed portion 19 . For example, the radially outer surface portion 27 of the elastic member 23 forms the bottom portion 19b of the recessed portion 19 . The bottom portion 19b of the recessed portion 19 is located on the radially outer surface portion 27 of the elastic member 23 . The bottom portion 19b of the recessed portion 19 extends in the circumferential direction of the rotation center axis C1 on the radially outer surface portion 27 . In FIG. 3 , the bottom surface 19d of the recessed portion 19 is located on the radially outer surface portion 27 of the elastic member 23 . The bottom surface 19d here is the bottom surface used to define the minimum radial distance.

The elastic member 23 is arranged, for example, on the concave radial outer surface portion 25 of the connection base portion 21 in a state of extending in the circumferential direction of the rotation center axis C1 . The elastic member 23 can also be compressed in the thickness direction defined by the radial direction of the rotation center axis C1.

In the bicycle rim 1 having the above-mentioned structure, the minimum radial distance D defined by the edge portion 19a and the bottom surface 19d in the radial direction of the rotation center axis C1 is 2.0 mm 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 radial outer surface portion 27 of the elastic member 23 shows an example of a case where it is substantially parallel to the rotation center axis C1. Therefore, the distance between the rotation center axis C1 and the radial outer surface portion 27 is substantially constant. That is, in the first embodiment, the radial distance D is defined by the distance between the edge portion 19 a and the radial outer surface portion 27 of the elastic member 23 .

As shown in FIG. 3 , in the first embodiment, the bottom portion 19 b is provided on the radially outer surface portion 27 of the elastic member 23 . In the first embodiment, the radial distance D is defined by the distance between the edge portion 19 a and the radial 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 connecting base portion 21 of the bottom surface 19d. In the first embodiment, 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 4.0 mm or less. That is, the bicycle rim 1 is preferably formed so that the radial distance D is in the range of not less than 2.0 mm and not more than 4.0 mm.

Here, 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 19a. For example, in the case of FIG. 3 , the radial position of the edge portion 19 a when the radial distance D is obtained is the radial outer surface portion 25 of the connection base portion 21 . For example, in the case of FIG. 6B described later, the radial position of the edge portion 19 a when the radial distance D is obtained is the radial outer surface portion 32 of the sealing member 31 .

When the tubeless tire 200 is mounted on the rim 1 , the first portion 105 a or the second portion 105 b of the tire 200 is placed in the concave portion 19 . The first portion 105a and the second portion 105b of the tire 200 are also referred to as tire bead.

Here, for example, the position where the first portion 105a or the second portion 105b of the tire 200 is placed in the recessed portion 19 is described as the first mounting position. On the other hand, the position on the opposite side of the first mounting position in the radial direction with respect to the rotation center axis C1 is described as a second mounting position.

The first portion 105a or the second portion 105b of the tire 200 is placed in the recess 19 at the first mounting position, and the elastic member 23 is compressed when the tire 200 is stretched from the first mounting position toward the second mounting position. In this case, the radial distance D becomes large at the first mounting position. Thereby, the tire 200 moves in the direction of the second mounting position. On the other hand, a margin is generated in the circumferential direction of the tire 200 .

As a result, the first portion 105a or the second portion 105b of the tire 200 can be easily placed in the recessed portion 19 at the second mounting position. The first portion 105 a and the second portion 105 b of the tire 200 are placed in the recess 19 over the entire circumference of the rim 1 . The amount of compression of the elastic member 23 is, for example, greater than 0.05 mm. It is more appropriate that the amount of compression of the elastic member 23 is larger than 0.1 mm, for example. It is most suitable that the amount of compression of the elastic member 23 is greater than 0.2 mm, for example. The amount of compression of the elastic member 23 is, for example, less than 1.0 mm.

The radial distance D in the state where the elastic member 23 here is attached to the connection base 21 is expressed as D1. The radial distance D in the state where the tire 200 is stretched from the first mounting position toward the second mounting position and the elastic member 23 is compressed is represented by D2. The radial distance D in the state where the first portion 105a and the second portion 105b of the tire 200 are placed in the recess 19 over the entire circumference of the rim 1 is represented by D3.

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. As a result, the work of attaching the tire 200 to the rim 1 is facilitated. Furthermore, when air enters the tire 200, the first portion 105a or the second portion 105b can be easily placed on the mounting portion 19c.

The mounting portion 19c here is located between the respective holding portions 13 and 15 and the edge portion 19a. The attachment portion 19c is located on the radially outer surface portion 17 of the annular connecting portion 7 . The mounting portion 19c is also referred to as a bead seat. Bead seating surfaces are used to hold the tire bead of the tire.

<Second Embodiment>

Structure of Second Embodiment The basic structure is substantially the same as that of the first embodiment. Therefore, the structure different from the first embodiment will be described in detail below. In the second embodiment, the explanation of the structure of the other embodiment is also adopted for the description of the structure common to the other embodiment.

As shown in FIG. 4 , the bicycle rim 1 includes a first annular side surface portion 3 , a second annular side surface portion 5 , and an annular connecting portion 7 . The annular connecting portion 7 connects the first annular side surface portion 3 and the second 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 first annular side surface portion 3 and the second 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 connecting portion 7 is defined in the radial direction of the rotation center axis C1. The radially outer surface portion 17 of the annular connecting portion 7 is formed with a concave portion 19 extending in the circumferential direction of the rotation center axis C1 and having an edge portion 19a and a bottom portion 19b. The concave portion 19 is formed on the radially outer surface portion 17 of the annular connecting portion 7 . The concave portion 19 has an edge portion 19a and a bottom portion 19b. The concave portion 19 extends in the circumferential direction of the rotation center axis C1. Specifically, the concave portion 19 is annular. The concave portion 19 may be partially formed in the circumferential direction of the rotation center axis C1.

As shown in FIG. 5A , the concave portion 19 has a pair of edge portions 19a and a bottom portion 19b. The edge portion 19a is an end portion of the recessed portion 19 in the circumferential direction of the rotation center axis C1. A pair of edge parts 19a are arrange|positioned on the opposite side with respect to the bottom part 19b in the axial direction of the rotation center axis|shaft C1. A pair of edge portions 19 a are provided on the radially outer surface portion 17 of the annular connecting portion 7 . In 2nd Embodiment, a pair of edge part 19a is provided in the radial outer surface part 25 of the connection base part 21 mentioned later, for example. The radially outer surface portion 17 of the annular connection portion 7 includes a radially outer surface portion 25 of the connection base portion 21 to be described later.

The bottom portion 19b is the portion closest to the rotation center axis C1 on the radially outer surface portion 17 of the recessed portion 19 . The region R is a region in which the elastic member 23 is arranged in the concave portion 19 of the annular connecting portion 7 . The bottom portion 19b is the portion closest to the rotation center axis C1 of the radially outer surface portion 17 in the region R. As shown in FIG. The radial position of the bottom portion 19b is the position of the radially outermost surface portion 17 located on the innermost side in the radial direction in the region R where the recessed portion 19 of the elastic member 23 is arranged. The radially outer surface portion 17 is the radially outer surface portion of the annular connecting portion 7 . The annular connecting portion 7 includes a connecting base portion 21 and an elastic member 23 . The annular joint portion 7 may include a sealing member 31 . In the radial direction of the rotation center axis C1 , when the connecting base 21 , the elastic member 23 , and the sealing 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 part 19b is provided in the center part of the annular connection part 7 in the axial direction of the rotation center axis C1, for example. The bottom portion 19b is provided on the radially outer surface portion 17 of the annular connecting portion 7 . For example, the radially outer surface portion 17 of the annular connecting portion 7 includes the radially outer surface portion 27 of the elastic member 23 to be described later. The bottom portion 19b is provided at the center portion of the elastic member 23, as in the axial direction of the rotation center axis C1. The bottom portion 19b is located on the radially outer surface portion 27 of the elastic member 23 .

As shown in FIGS. 5A and 5B , the annular connecting portion 7 includes a connecting base portion 21 for connecting the first annular side surface portion 3 and the second annular side surface portion 5 . The connection base portion 21 has, for example, a radially outer surface portion 25 . The radial outer surface part 25 of the connection base part 21 is defined in the radial direction of the rotation center axis C1. The radially outer surface portion 25 of the connection base portion 21 forms the outer peripheral surface of the connection base portion 21 . The center part of the radially outer surface part 25 of the connection base part 21 is formed in a concave shape in the axial direction of the rotation center axis C1. The bottom portion 19b is located on the radially outer surface portion 27 of the elastic member 23 .

The elastic member 23 is annular. For example, the elastic member 23 is formed in an annular shape extending in the circumferential direction of the rotation center axis C1. The elastic member 23 may be partially arranged in the circumferential direction of the rotation center axis C1. The elastic member 23 is arranged on the connection base 21 . The elastic member 23 is arranged on the radially outer surface portion 25 of the connection base portion 21 . The elastic member 23 is arranged on the radially outer side of the connection base 21 . For example, in the axial direction of the rotation center axis C1 , the elastic member 23 is arranged at the center portion of the radially outer surface portion 25 of the connection base portion 21 .

The elastic member 23 covers the hole portion 21 a of the connection base portion 21 . Specifically, the elastic member 23 covers the hole portion 21 a of the connection base 21 in the axial direction of the rotation center axis C1 , and is arranged at the center portion of the radially outer surface portion 25 of the connection base 21 . The elastic member 23 cannot allow air to penetrate. That is, air does not pass through the elastic member 23 . The elastic member 23 does not have air permeability.

In the radial direction of the rotation center axis C1, the radial outer surface portion 27 of the elastic member 23 is defined. The elastic member 23 has the concave portion 19 on the radially outer surface portion 27 . The concave portion 19 extends in the circumferential direction of the rotation center axis C1. The elastic member 23 has a concave portion 19 extending in the circumferential direction of the rotation center axis C1 on the radially outer surface portion 17 and the radially outer surface portion 25 of the elastic member 23 .

The elastic member 23 has a non-uniform radial thickness in the radial direction of the rotation center axis C. As shown in FIG. That is, the radial thickness of the elastic member 23 before installation is not uniform.

For example, the radial thickness of the elastic member 23 before attachment is thickest in the axial center portion of the rotation center axis C1 (refer to FIG. 5A ). The radial thickness of the elastic member 23 before attachment may be the thinnest at the center portion in the axial direction of the rotation center axis C1. When the elastic member 23 is attached to the connection base 21, the concave portion 19 is formed. Also in the second embodiment, the radial thickness of the elastic member 23 after attachment is not uniform.

The elastic member 23 before attachment may have a concave portion in the radially outer surface portion 27 . The recessed portion of the elastic member 23 extends in the circumferential direction of the rotation center axis C1. In this case, when the elastic member 23 is attached to the connection base 21, the recessed portion 19 is formed. In this case, the connection base 21 may or may not have a concave shape.

For example, the elastic member 23 is arranged on the concave radial outer surface portion 25 . The elastic member 23 is arranged in the concave portion of the radially outer surface portion 25 . In a state where the elastic member 23 is attached to the connection base 21 , the radially outer surface portion 27 is formed with the recessed 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 19a.

In the radial direction of the rotation center axis C1, if the bottom portion 19b of the recessed portion 19 is formed at a position closer to the rotation center axis C1 than the pair of edge portions 19a, how is the shape of the radially outer surface portion 27 of the elastic member 23 formed? It will be all right.

The elastic member 23 has the bottom portion 19b of the recessed portion 19 . For example, the radially outer surface portion 27 of the elastic member 23 forms the bottom portion 19b of the recessed portion 19 . The bottom portion 19b of the recessed portion 19 is located on the radially outer surface portion 27 of the elastic member 23 . The bottom portion 19b of the recessed portion 19 extends in the circumferential direction of the rotation center axis C1 on the radially outer surface portion 27 .

The elastic member 23 is arranged, for example, on the concave radial outer surface portion 25 of the connection base 21 in a state of extending in the circumferential direction of the rotation center axis C1 . The elastic member 23 can also be compressed in the thickness direction defined by the radial direction of the rotation center axis C1.

In the bicycle rim 1 having the above-mentioned 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 2.0 mm or more. The radial distance D here is defined by the distance between the edge portion 19a and the portion of the recessed portion 19 closest to the rotation center axis C1. The radial distance D is the distance from the portion closest to the rotation center axis C1 to the edge portion 19a in the recessed portion 19 .

Here, the portion of the recessed portion 19 closest to the rotation center axis C1 is located on the radially outer surface portion 27 of the elastic member 23 . That is, the bottom portion 19b is located on the radially outer surface portion 27 of the elastic member 23 . The bottom part 19 elastic member 23 is arrange|positioned at the part closest to the rotation center axis|shaft C1 in the area|region R of the recessed part 19.

The radial distance D is preferably 4.0 mm or less. That is, the bicycle rim 1 is preferably formed so that the radial distance D is in the range of not less than 2.0 mm and not more than 4.0 mm.

(Variation)

The above-described second embodiment is an example showing the case where the first holding portion 13 has the first locking portion 13a and the second holding portion 15 has the second locking portion 15a. Instead of this, the first holding portion 13 and the second holding portion 15 may be structured as follows.

For example, as shown in FIG. 5B , the first holding portion 13 includes a first holding surface 13 b extending radially outward of the first annular side surface portion 3 . The first holding surface 13b can be in contact with the tire 200 . The first holding surface 13b extends in the circumferential direction of the rotation center axis C1. The first holding portion 13 does not have the first locking portion 13a. The second holding portion 15 does not have the second locking portion 15a. That is, the structure shown in FIG. 5B is a structure in which the 1st latching part 13a and the 2nd latching part 15a are deleted from the holding|maintenance part 9 of the structure shown in FIG. 5A.

The second holding portion 15 includes a second holding surface 15 b extending radially outward of the second annular side surface portion 5 . The second holding surface 15b can be in contact with the tire 200 . The second holding surface 15b extends in the circumferential direction of the rotation center axis C1. The second locking surface 15b is arranged to face the first 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 first holding surface 13b and the second holding surface 15b. For example, radially inner portions of the tire 200 are the first portion 105a and the second portion 105b.

<Third Embodiment>

The structure of the third embodiment is substantially the same as that of the second embodiment except for the structure of the sealing member 31 . Therefore, the structure different from the second embodiment will be described in detail below. In the third embodiment, the explanation of the structure common to the other embodiments is also applied to the explanation of the other embodiments.

As shown in FIG. 4 , the bicycle rim 1 includes a first annular side surface portion 3 , a second annular side surface portion 5 , and an annular connecting portion 7 . The annular connecting portion 7 connects the first annular side surface portion 3 and the second 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 connecting portion 7 further includes a sealing member 31 arranged between the connecting base portion 21 and the elastic member 23 in the radial direction of the rotation center axis C1 . That is, the annular connecting portion 7 includes the connecting base portion 21 , the elastic member 23 , and the sealing member 31 . The sealing member 31 cannot allow air to penetrate. That is, the air does not pass through the sealing member 31 . The sealing member 31 does not have air permeability. The elastic member 23 allows air to penetrate. That is, the air passes through the elastic member 23 . The elastic member 23 may also be impermeable to air. That is, it is also possible to prevent air from passing through the elastic member 23 .

The annular connection portion 7 further includes a seal member 31 disposed on at least one of the outer side of the elastic member 23 and the inner side of 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 sealing member 31 is arranged further inside the elastic member 23 in the radial direction of the rotation center axis C1 . That is, the annular connection portion 7 further includes the sealing member 31 arranged between the connection base portion 21 and the elastic member 23 in the radial direction of the rotation center axis C1 .

The sealing member 31 covers the hole portion 21 a of the connection base portion 21 . Thereby, the sealing member 31 prevents the air from passing through the hole portion 21a. The sealing member 31 is arranged on the radially outer surface portion 25 of the connection base 21 . The seal member 31 is provided between the pair of edge portions 19a in the axial direction of the rotation center axis 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 surface. In this case, the sealing member 31 is attached to the connection base 21 . For example, the sealing member 31 is attached to the radially outer surface portion 25 of the connection base 21 so as to cover the hole portion 21 a of the connection base 21 . The sealing member 31 may be an annular rubber band member. In this case, the sealing member 31 is elastically attached to the connection base 21 .

The seal member 31 is arranged between the elastic member 23 and the connection 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 at least in a state of being attached to the connection base portion 21, as in the above-described second embodiment. Thereby, the radially outer surface portion 27 of the elastic member 23 arranged on the radially outer surface portion 32 of the sealing 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. Similarly, the elastic member 31 has a non-uniform radial thickness in the radial direction of the rotation center axis C1. Also in this case, the recessed portion 19 is formed in a state where the elastic member 23 and the sealing member 31 are attached to the connection base 21 .

In the bicycle rim 1 having the above-mentioned 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 2.0 mm or more. The radial distance D is preferably 4.0 mm or less. That is, the bicycle rim 1 is preferably formed so that the radial distance D is in the range of not less than 2.0 mm and not more than 4.0 mm.

As described above, 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 19a. In the case of FIG. 6A , the radial position of the edge portion 19 a when the radial distance D is obtained is the radial outer surface portion 25 of the connection base portion 21 .

(Variation)

In the above-described third embodiment, an example of the case where the sealing member 31 is arranged 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 first holding portion 13 and the second holding portion 15 in the axial direction of the rotation center axis C1 . The sealing member 31 is arranged on the radially outer surface portion 25 of the connection base 21 .

The annular connecting portion 7 includes a mounting portion 19c on the outer side in the axial direction of the rotation center axis C1 of the pair of edge portions 19a. The sealing member 31 extends to the mounting portion 19c. The attachment portion 19c is a portion for attaching the first portion 105a and the second portion 105b of the tire 200 . The attachment portion 19c is provided between the first holding portion 13 and the edge portion 19a. The attachment portion 19c is provided between the second holding portion 15 and the edge portion 19a.

The sealing member 31 has a radially outer surface portion 32 . In the radial direction of the rotation center axis C1, the radial outer surface portion 32 of the sealing member 31 is defined. A pair of edge portions 19 a are provided on the radially outer surface portion 17 of the annular connecting portion 7 . In the modification of the third embodiment, the pair of edge portions 19 a are provided, for example, on the radially outer surface portion 32 of the sealing member 31 .

The radially outer surface portion 17 of the recessed portion 19 is the radially outer surface portion 27 of the elastic member 23 . The bottom portion 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 19 c is the radially outer surface portion 32 of the sealing member 31 . The edge portion 19 a is provided on the radially outer surface portion 32 of the sealing member 31 . The radially outer surface portion 17 of the annular connecting portion 7 is the radially outer surface portion 27 of the elastic member 23 and the radially outer surface portion 32 of the sealing member 31 . In the modification of the third embodiment, the radially outer surface portion 25 of the connection base portion 21 is not the radially outer surface portion 17 of the annular connection portion 7 .

In this case, 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 2.0 mm or more. The radial distance D is preferably 4.0 mm or less. That is, the bicycle rim 1 is preferably formed so that the radial distance D is in the range of not less than 2.0 mm and not more than 4.0 mm.

In the modification of the third embodiment, the radial distance D in the radial direction of the rotation center axis C1 is determined by the distance between the edge portion 19 a of the radial outer surface portion 32 of the sealing member 31 and the radial outer surface portion 27 of the elastic member 23 . Defined by bottom 19b.

<4th Embodiment>

The structure of the fourth embodiment is substantially the same as that of the second embodiment except for the structure of the sealing member 131 . Therefore, the structure different from the second embodiment will be described in detail below. In the fourth embodiment, the explanation of the structure of the other embodiment is also adopted for the description of the structure common to the other embodiment.

As shown in FIG. 4 , the bicycle rim 1 includes a first annular side surface portion 3 , a second annular side surface portion 5 , and an annular connecting portion 7 . The annular connecting portion 7 connects the first annular side surface portion 3 and the second 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 connecting portion 7 includes a sealing member 131 . That is, the annular connecting portion 7 includes the connecting base portion 21 , the elastic member 23 , and the sealing member 131 . The elastic member 23 allows air to penetrate. That is, the air passes through the elastic member 23 . The elastic member 23 may also be impermeable to air. That is, it is also possible to prevent air from passing through the elastic member 23 .

The annular connection portion 7 further includes a seal member 131 disposed on at least one of the outer side of the elastic member 23 and the inner side of the elastic member 23 in the radial direction of the rotation center axis C1 . Here, as shown in FIG. 7A , an example is shown in which the sealing member 131 is arranged further outside the elastic member 23 in the radial direction of the rotation center axis C1 . The annular connecting portion 7 further includes a sealing member 131 arranged on the outer side of the elastic member 23 in the radial direction of the rotation center axis C1 of the bicycle rim 1 . The sealing member 131 is arranged on the outer side of the elastic member 23 in the radial direction of the rotation center axis C1. That is, the annular connecting portion 7 further includes the sealing member 131 arranged on the outer side of the elastic member 23 in the radial direction of the rotation center axis C1 . The elastic member 23 is arranged on the outer side of the connection base 21 in the radial direction of the rotation center axis C1.

The elastic member 23 covers the hole portion 21 a of the connection base portion 21 . The sealing member 131 covers the elastic member 23 . The sealing member 131 serves to cover at least the entire region of the elastic member 23 of the radially outer surface portion 17 of the annular connecting portion 7 . In FIGS. 7A and 7B , the sealing member 131 covers the entire radial outer surface portion 27 of the elastic member 23 . For example, in the structure shown in FIG. 3 , the sealing member 131 covers the radial 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 side surfaces in the axial direction of the rotation center axis C1. Thereby, the sealing member 131 prevents the air passing through the hole portion 21 a and the elastic member 23 .

The annular connecting portion 7 connects the first annular side surface portion 3 and the second 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, a The radial direction of the rotation center axis C1 of the rim 1 is arranged on the seal member 131 further outside the elastic member 23 . The annular connecting portion 7 includes a connecting base portion 21 for connecting the first annular side surface portion 3 and the second annular side surface portion 5 . In the radial direction of the rotation center axis C1, the radial outer surface portion 17 of the annular connecting portion 7 is defined. A concave portion 19 extending in the circumferential direction of the rotation center axis C1 is formed on the radially outer surface portion 17 .

The annular connecting portion 7 includes a mounting portion 19c on the outer side in the axial direction of the rotation center axis C1 of the pair of edge portions 19a. 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, the radial outer surface portion 32 of the sealing member 131 is defined. A pair of edge portions 19 a are provided on the radially outer surface portion 17 of the annular connecting portion 7 . Therefore, in the fourth embodiment, the edge portion 19 a is provided on the radially outer surface portion 32 of the sealing member 131 .

The sealing member 131 is arranged on the radially outer surface portion 27 of the elastic member 23 and the radially outer surface portion 25 of the connection base 21 . Specifically, it is arranged on the radially outer surface portion 27 of the elastic member 23 at the center portion in the axial direction of the rotation center axis C1 of the seal member 131 . The axial end portion of the rotation center axis C1 of the seal member 131 is arranged on the radially outer surface portion 25 of the connection base portion 21 . The axial end portion of the rotation center axis C1 of the seal member 131 is arranged on the attachment portion 19c.

The seal member 131 is arranged between the first holding portion 13 and the second 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 surface. In this case, the sealing 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 an annular rubber band member. In this case, the sealing member 131 is elastically attached to the connection base 21 and the elastic member 23 .

The elastic member 23 is arranged between the seal member 131 and the connection 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 at least in a state of being attached to the connection base portion 21 as in the above-described second and third embodiments. Thereby, the radially outer surface portion 32 of the sealing member 131 arranged on the radially outer surface portion 27 of the elastic member 23 is formed in a concave shape similarly to 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. Similarly, the elastic member 131 has a non-uniform radial thickness in the radial direction of the rotation center axis C1. Also in this case, the elastic member 23 and the sealing member 131 are formed in a concave shape in a state where the elastic member 23 and the sealing member 131 are attached to the connection base 21 .

A pair of edge portions 19 a are provided on the radially outer surface portion 17 of the annular connecting portion 7 . In the fourth embodiment, the pair of edge portions 19 a are provided, for example, on the radially outer surface portion 32 of the sealing member 131 . The bottom portion 19b is provided on the radially outer surface portion 17 of the annular connecting portion 7 . In the fourth embodiment, the bottom portion 19b is provided, for example, on the radially outer surface portion 32 of the sealing member 131 . For example, the bottom portion 19b is provided at the center portion of the radially outer surface portion 32 of the seal member 131 in the axial direction of the rotation center axis C1.

In the bicycle rim 1 having the above-mentioned 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 2.0 mm or more. The radial distance D is preferably 4.0 mm or less. That is, the bicycle rim 1 is preferably formed so that the radial distance D is in the range of not less than 2.0 mm and not more than 4.0 mm.

As described above, 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 19a. In the fourth embodiment, the pair of edge portions 19 a are provided, for example, on the radially outer surface portion 32 of the sealing member 131 . As described above, the radial position of the bottom portion 19b when the radial distance D is obtained is the radially outermost surface portion of the bottom portion 19b. In the fourth embodiment, the bottom portion 19b is provided on, for example, the radially outer surface portion 32 of the sealing member 131 .

(Variation)

In the above-described fourth embodiment, an example in which the sealing member 131 is arranged between the first holding portion 13 and the second holding portion 15 is shown. However, the sealing member 131 may be configured as follows.

For example, as shown in FIG. 7B , the seal member 131 is arranged between the pair of edge portions 19 a in the axial direction of the rotation center axis C1 . The seal member 131 and the elastic member 23 are arranged between the pair of edge portions 19a in the axial direction of the rotation center axis C1. The sealing member 131 and the elastic member 23 are arranged inside the pair of edge portions 19a in the radial direction of the rotation center axis C1. That is, the sealing member 131 does not extend to the pair of edge portions 19a.

A pair of edge portions 19 a are provided on the radially outer surface portion 17 of the annular connecting portion 7 . In the modification of the fourth embodiment, the pair of edge portions 19 a are provided on, for example, the radially outer surface portion 25 of the connection base portion 21 . The bottom portion 19b is provided on the radially outer surface portion 17 of the annular connecting portion 7 . In the modification of the fourth embodiment, the bottom portion 19b is provided on, for example, the radially outer surface portion 32 of the sealing member 131 .

The sealing member 131 covers the elastic member 23 . The sealing member 131 serves to cover at least the entire region of the elastic member 23 of the radially outer surface portion 17 of the annular connecting portion 7 . The sealing member 131 covers the entire radial outer surface portion 27 of the elastic member 23 . Thereby, the sealing member 131 prevents the air passing through the hole portion 21 a and the elastic member 23 .

In this case, 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 2.0 mm or more. The radial distance D is preferably 4.0 mm or less. That is, the bicycle rim 1 is preferably formed so that the radial distance D is in the range of not less than 2.0 mm and not more than 4.0 mm.

In the modification of the fourth embodiment, the radial distance D is in the radial direction of the rotation center axis C1, and the edge portion 19a of the radially outer surface portion 25 of the base portion 21 and the radially outer surface portion 32 of the sealing member 131 are connected. Defined by bottom 19b.

<Other Embodiments>

Although an embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the invention.

(A) In the above-described third and fourth embodiments, the case where the tire 200 is locked by the first locking portion 13a and the second locking portion 15a is shown. A rim including the locking portions 13a and 15a is also called a hook rim. Instead of this, the tire 200 may be held by the first holding surface 13b and the second holding surface 15b shown in FIG. 5B . The first holding portion 13 does not have the first locking portion 13a. Likewise, the second holding portion 15 does not have the second locking portion 15a. The rim provided with the locking portions 13a and 15a is also called a straight rim.

(B) In the above-described first to fourth embodiments, an example in which 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 case, at least one arc-shaped elastic member 23 is arranged on the radially outer side of the connection base 21 . For example, a plurality of arc-shaped elastic members 23 may be arranged in series in the circumferential direction of the rotation center axis C1, or may be arranged at intervals.

Description of reference numerals

1: Bicycle rims

3: 1st annular side surface

5: Second annular side surface

7: Ring connection part

9: Holding Department

13: 1st Retention Section

13a: 1st locking part

13b: 1st holding surface

15: The 2nd Holding Section

15a: Second locking part

15b: 2nd holding surface

17: Radial outer surface portion of annular connecting portion

19: Recess

19a: Edge

19b: Bottom

19c: Installation Department

19d: Underside

19e: side

21: Connect the base

21a: Hole

23: Elastic member

25: Radial outer surface part connecting the base

27: Radial outer surface of elastic member

31, 131: Sealing member

100: Wheels

101: spokes

102: Wheels

105a: Part 1

105b: Part 2

200: tires

C1: Rotation center axis

D, D1, D2, D3: Radial distance.

Claims (36)

1. A bicycle rim for mounting tires; The above-mentioned bicycle rim includes a first annular side surface portion, a second annular side surface portion, and an annular connecting portion; The annular connecting portion connects the first annular side surface portion and the second annular side surface portion in the axial direction of the rotation center axis of the bicycle rim, and includes an elastic member; In the radial direction of the above-mentioned rotation center axis, the radial outer surface portion of the above-mentioned annular connecting portion is defined; A recessed portion having an edge portion and a bottom surface is formed on the radially outer surface portion extending in the circumferential direction of the rotational center axis; The minimum radial distance defined by the edge portion and the bottom surface in the radial direction is 2.0 mm or more. 2 . The bicycle rim according to claim 1 , wherein the radial distance is 4.0 mm or less. 3 . 3 . The bicycle rim according to claim 1 , wherein the bottom surface of the recessed portion is located on the radially outer surface portion of the elastic member. 4 . 4. The bicycle rim according to claim 1, wherein the annular connecting portion includes a connecting base, The connection base is used to connect the first annular side surface portion and the second annular side surface portion; The said elastic member is arrange|positioned at the radial direction outer side of the said connection base. 5 . The bicycle rim according to claim 4 , wherein the annular connecting portion further includes a sealing member disposed between the connecting base portion and the elastic member in the radial direction. 6 . 6 . The bicycle rim according to claim 5 , wherein the annular connecting portion includes a mounting portion on the outer side in the axial direction of the rotation center axis of the pair of the edge portions; 7 . The above-mentioned sealing member extends to the above-mentioned mounting portion. 7 . The bicycle rim according to claim 1 , wherein the annular connecting portion further includes a sealing member disposed further outside the elastic member in the radial direction. 8 . 8 . The bicycle rim according to claim 7 , wherein the annular connecting portion includes a mounting portion on the outer side in the axial direction of the rotation center axis of the pair of the edge portions; 9 . The above-mentioned sealing member extends to the above-mentioned mounting portion. 9. A bicycle rim for mounting a tire; The above-mentioned bicycle rim includes a first annular side surface portion, a second annular side surface portion, and an annular connecting portion; The annular connecting portion connects the first annular side surface portion and the second annular side surface portion in the axial direction of the rotation center axis of the bicycle rim, and includes an elastic member; In the radial direction of the above-mentioned rotation center axis, the radial outer surface portion of the above-mentioned annular connecting portion is defined; A recessed portion having an edge portion and a bottom portion is formed on the radially outer surface portion extending in the circumferential direction of the rotational center axis; The radial distance defined by the edge portion and the bottom portion in the radial direction is 2.0 mm or more. 10 . The bicycle rim according to claim 9 , wherein the bottom portion is a portion closest to the rotation center axis among the regions where the elastic member is arranged in the recessed portion. 11 . 11. The bicycle rim according to claim 9, wherein the radial distance is 4.0 mm or less. 12. The bicycle rim according to claim 9, wherein the bottom portion is located on a radially outer surface portion of the elastic member. 13. The bicycle rim according to claim 9, wherein the annular connecting portion includes a connecting base, The connection base is used to connect the first annular side surface portion and the second annular side surface portion; The said elastic member is arrange|positioned at the radial direction outer side of the said connection base. 14 . The bicycle rim according to claim 13 , wherein the annular connecting portion further includes a sealing member disposed between the connecting base portion and the elastic member in the radial direction. 15 . 15 . The bicycle rim according to claim 14 , wherein the annular connecting portion includes a mounting portion on the outer side in the axial direction of the rotation center axis of the pair of the edge portions; 15 . The above-mentioned sealing member extends to the above-mentioned mounting portion. 16 . The bicycle rim according to claim 9 , wherein the annular connecting portion further includes a sealing member disposed further outside the elastic member in the radial direction. 17 . 17. The bicycle rim according to claim 9, wherein the annular connecting portion includes a mounting portion on the outer side in the axial direction of the rotation center axis of the pair of the edge portions; The above-mentioned sealing member extends to the above-mentioned mounting portion. 18. A bicycle rim for mounting a tire; The above-mentioned bicycle rim includes a first annular side surface portion, a second annular side surface portion, and an annular connecting portion; The annular connecting portion connects the first annular side surface portion and the second annular side surface portion in the axial direction of the rotation center axis of the bicycle rim, and the annular connecting portion includes an elastic member and a sealing member ; The said sealing member is arrange|positioned further outside the said elastic member in the radial direction of the rotation center axis|shaft of the said bicycle rim. 19. The bicycle rim according to claim 18, wherein, in the radial direction, a radially outer surface portion of the annular connecting portion is defined; A recessed portion extending in the circumferential direction of the rotational center axis is formed on the radially outer surface portion. 20. The bicycle rim according to claim 18, wherein the annular connecting portion includes a connecting base, The connection base is used to connect the first annular side surface portion and the second annular side surface portion; The said elastic member is arrange|positioned further outside the said connection base in the said radial direction. 21. A bicycle rim for mounting a tire; The above-mentioned bicycle rim includes: a first annular side surface portion, a second annular side surface portion, and an annular connecting portion; The annular connecting portion connects the first annular side surface portion and the second annular side surface portion in the axial direction of the rotation center axis of the bicycle rim, and includes an elastic member; In the radial direction of the above-mentioned rotation center axis, the radial outer surface portion of the above-mentioned annular connecting portion is defined; The elastic member has a non-uniform radial thickness in the radial direction; The said elastic member has the recessed part extended toward the circumferential direction of the said rotation center axis in the radial outer surface part of the said annular connection part and the radial outer surface part of the said elastic member. 22 . The bicycle rim according to claim 21 , wherein the annular connecting portion further includes a sealing member disposed on at least one of the outer side of the elastic member and the inner side of the elastic member in the radial direction. 23 . 23. The bicycle rim according to any one of claims 5 to 8, 14 to 20, and 22, wherein the sealing member is a tape member having an adhesive surface. 24. The bicycle rim according to any one of claims 5 to 8, 14 to 20, and 22, wherein the sealing member is an annular rubber band member. 25. The bicycle rim according to any one of claims 5 to 8, 14 to 20, and 22, wherein the elastic member allows air to penetrate. 26. The bicycle rim according to any one of claims 1 to 22, wherein the elastic member cannot allow air to penetrate. 27. The bicycle rim according to any one of claims 1 to 22, wherein the elastic member is annular. 28. The bicycle rim according to any one of claims 1 to 22, wherein the recessed portion is annular. 29. The bicycle rim according to any one of claims 1 to 22, wherein at least one of the first annular side surface portion, the second annular side surface portion, and the annular connecting portion is made of a non-metallic material . 30. The bicycle rim according to claim 29, wherein the non-metallic material is a composite fiber material. 31. The bicycle rim according to any one of claims 1 to 22, wherein at least one of the first annular side surface portion, the second annular side surface portion, and the annular connecting portion is made of a metal material . 32. The bicycle rim according to claim 31, wherein the metal material is aluminum. 33. The bicycle rim according to any one of claims 1 to 22, wherein the first annular side surface portion and the second annular side surface portion each have a rim provided along an outer peripheral edge for holding the tire. keep the department. 34. The bicycle rim according to claim 33, wherein the holding portion includes a first holding portion disposed on the radially outer side of the first annular side surface portion, and a first holding portion disposed on the second annular side surface portion The above-mentioned radially outer second holding portion. 35. The bicycle rim according to claim 34, wherein the first holding portion includes a first holding surface extending outward in the radial direction of the first annular side surface portion; The said 2nd holding part includes the 2nd holding surface extended toward the said radial direction outer side of the said 2nd annular side surface part. 36. The bicycle rim according to claim 34, wherein the first holding portion includes a first locking portion disposed on the radially outer side of the first annular side surface portion; The said 2nd holding part includes the 2nd locking part arrange|positioned at the said radial direction outer side of the said 2nd annular side surface part.

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