CN112339496A - Bicycle rim and production method thereof - Google Patents

Bicycle rim and production method thereof Download PDF

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Publication number
CN112339496A
CN112339496A CN201910721868.3A CN201910721868A CN112339496A CN 112339496 A CN112339496 A CN 112339496A CN 201910721868 A CN201910721868 A CN 201910721868A CN 112339496 A CN112339496 A CN 112339496A
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CN
China
Prior art keywords
rim
edge part
section
inner edge
transition section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910721868.3A
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Chinese (zh)
Inventor
叶金吉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xiamen Baiyexing Outdoor Sports Equipment Co ltd
Original Assignee
Xiamen Baiyexing Outdoor Sports Equipment Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xiamen Baiyexing Outdoor Sports Equipment Co ltd filed Critical Xiamen Baiyexing Outdoor Sports Equipment Co ltd
Priority to CN201910721868.3A priority Critical patent/CN112339496A/en
Publication of CN112339496A publication Critical patent/CN112339496A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
    • B29C35/045—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using gas or flames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B21/00—Rims
    • B60B21/06—Rims characterised by means for attaching spokes, i.e. spoke seats
    • B60B21/062—Rims characterised by means for attaching spokes, i.e. spoke seats for bicycles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B21/00—Rims
    • B60B21/06—Rims characterised by means for attaching spokes, i.e. spoke seats
    • B60B21/066—Rims characterised by means for attaching spokes, i.e. spoke seats the spoke mounting means being located on a flange oriented radially and formed on the radially inner side of the rim well
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B21/00—Rims
    • B60B21/08—Rims characterised by having braking surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B21/00—Rims
    • B60B21/10—Rims characterised by the form of tyre-seat or flange, e.g. corrugated
    • B60B21/102—Rims characterised by the form of tyre-seat or flange, e.g. corrugated the shape of bead seats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B21/00—Rims
    • B60B21/12—Appurtenances, e.g. lining bands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T5/00—Vehicle modifications to facilitate cooling of brakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D35/00—Vehicle bodies characterised by streamlining
    • B62D35/008—Side spoilers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
    • B29C35/045—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using gas or flames
    • B29C2035/046—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using gas or flames dried air

Abstract

The invention discloses a bicycle rim and a production method thereof. The bicycle rim is provided with an inner edge part and an outer edge part, the outer edge part is provided with a bead seat, and the outer wall of the inner edge part is arranged from outside to inside in a radial direction in a gradually-narrowed mode; the outer wall of the inner edge part is divided into a plurality of equally-distributed equally-divided section parts relative to the axis of the rim, each equally-divided section part is provided with a first gradually-changing section, the width of each first gradually-changing section is gradually changed from narrow to wide, and the inner diameter of each first gradually-changing section relative to the axis of the rim is gradually changed from large to small. It has the following advantages: the direction of side (transverse) wind can be effectively changed, the resistance of wind can be effectively decomposed, and the wind breaking effect is achieved.

Description

Bicycle rim and production method thereof
Technical Field
The invention relates to the technical field of bicycles, in particular to a bicycle rim and a production method thereof.
Background
The conventional bicycle rim comprises a stainless steel type rim and a carbon fiber rim. The carbon fiber rim is formed by laminating carbon yarns impregnated with resin into a mold (a shape shaping auxiliary tool in the process of rolling the rim) and then performing high-temperature pressure shaping, curing and forming for a period of time (a process of reacting and shaping the rolled product in a mold cavity at high temperature and high pressure). Conventional bicycle rims have an inner rim portion and an outer rim portion. The outer edge part is provided with a bead seat; the outer wall of the inner edge part is arranged from outside to inside in a gradually narrowing mode along the radial direction, and the outer wall of the inner edge part is of a revolution surface structure, namely, the section profile is formed by extending around the axis of the rim, and the section profile is constant and unchangeable. The bicycle rim can not form wind break or has poor wind break effect when encountering crosswind or crosswind in the running process, and particularly influences the performance of players in road competition, so that the bicycle rim has the requirement of further improvement.
Disclosure of Invention
The invention provides a bicycle rim and a production method thereof, which overcome the defects of the bicycle rim in the background technology.
One of the technical schemes adopted by the invention for solving the technical problems is as follows:
the bicycle rim is provided with an inner edge part and an outer edge part, the outer edge part is provided with a bead seat, and the outer wall of the inner edge part is arranged from outside to inside in a radial direction in a gradually-narrowed mode; the outer wall of the inner edge part is divided into a plurality of equally-distributed equally-divided section parts relative to the axis of the rim, each equally-divided section part is provided with a first gradually-changing section, the width of each first gradually-changing section is gradually changed from narrow to wide, and the inner diameter of each first gradually-changing section relative to the axis of the rim is gradually changed from large to small.
In one embodiment: the equal section part is also provided with a second transition section connected with the first transition section, and the change trend of the width and the inner diameter of the second transition section is opposite to the change trend of the first transition section.
In one embodiment: the connection part of the first transition section and the second transition section in the equal-section parts forms a convex part of the inner edge part, the connection part of the first transition section and the second transition section of every two adjacent equal-section parts forms a concave part of the inner edge part, and the outer wall of the inner edge part is in a wave-like structure through the matching of the convex part and the concave part.
In one embodiment: the central angle of the first transition section is larger than that of the second transition section.
In one embodiment: the outer wall of the outer edge part is provided with a braking area matched with a brake pad, and the braking area is concavely provided with grooves which are arranged in an annular array relative to the axis of the wheel rim.
In one embodiment: the bicycle rims are axially symmetrically arranged relative to the central reference plane.
In one embodiment: each equal section of the inner edge part is provided with a spoke mounting hole.
In one embodiment: the spoke mounting hole is arranged at the highest position of the first transition section.
The second technical scheme adopted by the invention for solving the technical problems is as follows:
the bicycle rim is provided with an inner edge part and an outer edge part, the outer edge part is provided with a bead seat, and the outer wall of the inner edge part is arranged from outside to inside in a radial direction in a gradually-narrowed mode; the outer wall of the inner edge part is provided with a wave structure arranged along the circumferential direction, the wave structure is provided with a narrow part and a wide part, the narrow part and the wide part are arranged in a gradual change mode, and the rim can generate a wind breaking effect when encountering cross wind or cross wind through the wave structure.
The third technical scheme adopted by the invention for solving the technical problems is as follows:
the production method of the bicycle rim comprises the following steps:
processing the pre-impregnated carbon yarn by mixing the application resin and the carbon fiber carbon filament;
the middle layer of the prepreg carbon yarn is attached to form a rim shape in the material rolling process;
and carrying out high-temperature hot pressing and air blowing molding to realize glass transition and obtain the rim through curing molding.
Compared with the background technology, the technical scheme has the following advantages:
the width of the first transition section is gradually changed from narrow to wide, and the inner diameter of the first transition section relative to the axis of the rim is gradually changed from large to small, so that the section of the rim product of the bicycle is changed, the direction of side (cross) wind can be effectively changed, the resistance of the wind can be effectively decomposed, and the wind breaking effect (the wind breaking effect is the degree of decomposition of the resistance of the rim to the side wind or the cross wind in the riding process) is achieved.
The equal section part is also provided with a second transition section connected with the first transition section, and the variation trend of the width and the inner diameter of the second transition section is opposite to the variation trend of the first transition section, so that better wind breaking effect is achieved.
The outer wall of the inner edge part is in a wave-like structure through the matching of the convex part and the concave part, and the outer wall is in a wave shape gradually increased from small to big through the change, so that a better wind breaking effect is achieved.
The brake area is concavely provided with grooves which are arranged in an annular array relative to the axis of the rim, so that the brake effect can be improved, the brake temperature is reduced, and the service life of the rim is prolonged.
Drawings
The invention is further described with reference to the following figures and detailed description.
FIG. 1 is one of the perspective views of a bicycle rim of an embodiment.
FIG. 2 is a second perspective view of the bicycle rim of the present embodiment.
FIG. 3 is a perspective cutaway view of an embodiment of a bicycle rim along a center reference plane.
FIG. 4 is a front schematic view of a bicycle rim in accordance with an embodiment.
FIG. 5 is a front cross-sectional view of an embodiment of a bicycle rim along a center reference plane.
FIG. 6 is a schematic view of an embodiment of a bicycle rim cut radially at the convex portion.
FIG. 7 is a schematic view of an embodiment of a bicycle rim in a radial cross-section of a well.
Fig. 8 is an enlarged schematic view at a of fig. 1.
Fig. 9 is an enlarged schematic view at B of fig. 3.
Fig. 10 is an enlarged schematic view at C of fig. 4.
Detailed Description
Referring to fig. 1-10, a bicycle rim has an inner rim portion 1 and an outer rim portion 2, and is axially symmetrically disposed relative to a central reference plane. The bicycle rim in this embodiment is divided into an inner rim portion 1 and an outer rim portion 2, as shown by the wavy line S in fig. 4. The rim can be divided into an inner edge portion, an outer edge portion and a middle portion connecting the inner edge portion and the outer edge portion, wherein the boundary of the inner edge portion is the maximum width of the rim.
The outer wall surface of the outer edge part 2 is concavely provided with a tire mounting groove 21 for mounting a tire, the part of the outer edge part 2 corresponding to the tire mounting groove 21 forms a bead seat 22, the outer edge part 2 is in a rotary structure relative to the axis of a wheel rim, and the width of the outer wall of the outer edge part 2 is gradually reduced from inside to outside along the radial direction.
The outer wall of the inner edge portion 1 is arranged to be gradually narrowed from the outside to the inner width D1 along the radial direction, the outer wall of the inner edge portion 1 is divided into a plurality of equally-divided equal-section parts 11 relative to the axis of the rim, and the equal-section parts 11 are provided with a first transition section 111 and a second transition section 112. In this embodiment: the equal-segmented portion 11 is composed of a first transition section 111 and a second transition section 112. Each of the segments 11 of the inner edge portion 1 is provided with spoke mounting holes, i.e. the number of inner edge portions 1 is equal to the number of spoke mounting holes, such as 20 or 24.
The width of the first transition section 111 is gradually changed from narrow to wide, and the inner diameter R1 of the first transition section relative to the axis of the rim is gradually changed from large to small, and the change of the width and the change of the inner diameter are synchronous; the width and the inner diameter R1 of the second transition section 112 have a trend opposite to that of the first transition section 111, the width is gradually changed from wide to narrow and gradually changed from small to large relative to the inner diameter of the rim axis, and the change of the width and the change of the inner diameter are synchronous. The central angle of the first transition section 111 is larger than the central angle of the second transition section 112. The joint of the first transition section 111 and the second transition section 112 in the equal-section part 11 forms a convex part 113 of the inner edge part 1, the joint of the first transition section 111 and the second transition section 112 of every two adjacent equal-section parts 11 forms a concave part 114 of the inner edge part 1, and the outer wall of the inner edge part 22 is in a wave-like structure through the cooperation of the convex part 113 and the concave part 114. In the specific structure, for example: the width of the recess 114 (the widest and highest point of the first transition section 111) is 20.5mm, the spacing between the recess 114 and the outermost side of the hub is 53mm (the outer diameter D2/2-the inner diameter R1 of the hub), the width of the protrusion 113 (the widest and highest point of the second transition section 112) is 27mm, and the spacing between the recess 114 and the outermost side of the hub is 55 mm. The outer wall of the inner edge part is formed with a wave structure arranged along the circumferential direction, the wave structure is provided with a narrow part (a concave part 114) and a wide part (a convex part 113), the narrow part and the wide part are arranged gradually, and the rim can generate a wind breaking effect when encountering side wind or cross wind through the wave structure.
The outer wall of the outer edge part 2 is provided with a braking area matched with a brake pad, the braking area is concavely provided with grooves 23 which are arranged in an annular array relative to the axis of the wheel rim, and the grooves 23 are obliquely arranged. In this embodiment: the number of the grooves 23 is 300. The brake area is concavely provided with the grooves 23 which are arranged in an annular array relative to the axis of the rim, so that the brake force can be improved, the wheel sliding distance is short (the brake distance is the sliding distance after the brake clamp and the wheel rim brake edge are clamped), the brake effect is improved, the brake temperature is reduced, the wheel rim brake edge is prevented from being burst, the rejection rate is reduced, and the service life is prolonged. The braking area is a rim braking surface, and the rim braking surface is an area with the width of 12mm on the inner side of the outer circle of the rim. The brake temperature refers to heat generated by friction between a brake block and a wheel set brake edge when the bicycle is in a brake state.
The spoke mounting holes are formed at the highest position of the first transition section 111.
The bicycle rim is made of carbon fiber materials, or a mixed material of resin and carbon fiber is applied.
The production method of the bicycle rim comprises the following steps:
processing the pre-impregnated carbon yarn by mixing the application resin and the carbon fiber carbon filament; the carbon fiber prepreg carbon yarn is a compound formed by fusing carbon fiber dry filaments and resin according to a proportion.
The middle layer of the prepreg carbon yarn is attached to form a rim shape in the material rolling process;
and carrying out high-temperature hot pressing and air blowing molding to realize glass transition and obtain the rim through curing molding.
The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the invention, which is defined by the appended claims and their equivalents.

Claims (10)

1. The bicycle rim is provided with an inner edge part and an outer edge part, the outer edge part is provided with a bead seat, and the outer wall of the inner edge part is arranged from outside to inside in a radial direction in a gradually-narrowed mode; the method is characterized in that: the outer wall of the inner edge part is divided into a plurality of equally-distributed equally-divided section parts relative to the axis of the rim, each equally-divided section part is provided with a first gradually-changing section, the width of each first gradually-changing section is gradually changed from narrow to wide, and the inner diameter of each first gradually-changing section relative to the axis of the rim is gradually changed from large to small.
2. The bicycle rim of claim 1, wherein: the equal section part is also provided with a second transition section connected with the first transition section, and the change trend of the width and the inner diameter of the second transition section is opposite to the change trend of the first transition section.
3. The bicycle rim of claim 2, wherein: the connection part of the first transition section and the second transition section in the equal-section parts forms a convex part of the inner edge part, the connection part of the first transition section and the second transition section of every two adjacent equal-section parts forms a concave part of the inner edge part, and the outer wall of the inner edge part is in a wave-like structure through the matching of the convex part and the concave part.
4. The bicycle rim of claim 2, wherein: the central angle of the first transition section is larger than that of the second transition section.
5. The bicycle rim of claim 1, wherein: the outer wall of the outer edge part is provided with a braking area matched with a brake pad, and the braking area is concavely provided with grooves which are arranged in an annular array relative to the axis of the wheel rim.
6. The bicycle rim of claim 1 or 2 or 3 or 4 or 5, wherein: the bicycle rims are axially symmetrically arranged relative to the central reference plane.
7. The bicycle rim of claim 1 or 2 or 3 or 4 or 5, wherein: each equal section of the inner edge part is provided with a spoke mounting hole.
8. The bicycle rim of claim 7, wherein: the spoke mounting hole is arranged at the highest position of the first transition section.
9. The bicycle rim is provided with an inner edge part and an outer edge part, the outer edge part is provided with a bead seat, and the outer wall of the inner edge part is arranged from outside to inside in a radial direction in a gradually-narrowed mode; the method is characterized in that: the outer wall of the inner edge part is provided with a wave structure arranged along the circumferential direction, the wave structure is provided with a narrow part and a wide part, the narrow part and the wide part are arranged in a gradual change mode, and the rim can generate a wind breaking effect when encountering cross wind or cross wind through the wave structure.
10. Method for producing a bicycle rim according to claim 1 or 9, characterized in that: the method comprises the following steps:
processing the pre-impregnated carbon yarn by mixing the application resin and the carbon fiber carbon filament;
the middle layer of the prepreg carbon yarn is attached to form a rim shape in the material rolling process;
and carrying out high-temperature hot pressing and air blowing molding to realize glass transition and obtain the rim through curing molding.
CN201910721868.3A 2019-08-06 2019-08-06 Bicycle rim and production method thereof Pending CN112339496A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910721868.3A CN112339496A (en) 2019-08-06 2019-08-06 Bicycle rim and production method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910721868.3A CN112339496A (en) 2019-08-06 2019-08-06 Bicycle rim and production method thereof

Publications (1)

Publication Number Publication Date
CN112339496A true CN112339496A (en) 2021-02-09

Family

ID=74366900

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910721868.3A Pending CN112339496A (en) 2019-08-06 2019-08-06 Bicycle rim and production method thereof

Country Status (1)

Country Link
CN (1) CN112339496A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2614108A (en) * 2022-07-07 2023-06-28 Aerocoach Ltd A disc wheel for a vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2614108A (en) * 2022-07-07 2023-06-28 Aerocoach Ltd A disc wheel for a vehicle
GB2614108B (en) * 2022-07-07 2024-04-10 Aerocoach Ltd A disc wheel for a vehicle

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