TW201416248A - Fiber composite rim - Google Patents

Abstract

A fiber composite rim is disclosed, including a plurality of arc-shaped frame strips, each arc-shaped frame strip has a foam body made by foam material, as well as a fiber composite outer layer made by fiber composite and covering the foam body, and both ends of each arc-shaped frame strip are respectively formed with a connecting surface, these arc-shaped frame strips are connected into a ring by using the connecting surfaces of their fiber composite material outer layers, a supporting surface is formed at the junction of connecting surfaces of two adjacent arc-shaped frame strips, whereby the fiber composite rim not only has a light weight but also is uneasy to break. Preferably, the foam body of each arc-shaped frame strip having at least one groove, portion of the fiber composite outer layer of each arc-shaped frame strip is to fill in the groove of the foam body. Furthermore, the groove of foam body of each arc-shaped rim strip extends substantially along the long axis of the arc-shaped rim strip and surrounds the foam body.

Description

Fiber composite wheel frame

The present invention relates to a wheel frame for mounting a tire, and more particularly to a fiber composite wheel frame.

Please refer to the invention patent No. I329080 of our country. The wheel frame of the conventional bicycle is hollow, and there is a tire groove on the outer side of the wheel frame for bonding or plugging the tire, and the inner side of the wheel frame is used for connecting most of the spokes. The wire is connected to the flower hub of the bicycle by the spokes, and is then rotated by the flower hub.

The wheel frame of the traditional bicycle is made of iron, and its structure is relatively strong but heavy. In order to reduce the weight of the wheel frame, the material of the wheel frame is mostly changed to aluminum. However, the traditional aluminum alloy wheel frame has difficulty in the production method of manufacturing the inertia wheel frame and the cutter wheel or the disc wheel of 50 mm or more. Nowadays, the design of the bicycle is becoming lighter and lighter, except that the body is changed to be hard and the proportion is smaller than aluminum. Made of carbon fiber composite material, some of the wheel frame materials are also changed to carbon fiber composite materials, such as those provided by the aforementioned patents.

However, the carbon fiber composite material is formed by blowing air, and the inside is hollow. Therefore, if the thickness is too small, the carbon fiber composite material is relatively easy to be broken. If the thickness is increased, the weight reduction effect cannot be achieved, and the wheel frame formed by the blow molding is soft. Therefore, the rider's force or torque cannot be transmitted to the tire completely and effectively, and it is also easy to be broken by twisting.

In view of the above-mentioned deficiencies, the main object of the present invention is to provide a fiber composite wheel frame which is not only lightweight but also difficult to break.

In order to achieve the above object, the fiber composite material wheel frame provided by the present invention comprises a plurality of curved frame strips, each of the curved frame strips having a foam made of a foamed material, and a coating on the foaming An outer layer of fiber composite material made in vitro and made of a fiber composite material material, the curved frame strips being connected in a ring shape by the outer layer of the fiber composite material. Thereby, even if the fiber composite material wheel frame has a relatively thin outer layer of the fiber composite material, it can have the property of being difficult to be broken by the buffering action of the foamed bodies, and has the advantage of being relatively light in weight. In addition, although the fiber composite material wheel frame is not integrally formed, the frame strips are connected to each other by the outer layer of the fiber composite material, and the fiber composite material wheel frame can prevent different materials from separating from each other due to heat. question.

The detailed construction, features, assembly or use of the fiber composite wheel frame provided by the present invention will be described in the detailed description of the subsequent embodiments. However, it should be understood by those of ordinary skill in the art that the present invention is not limited by the scope of the invention.

The technical contents and features of the present invention will be described in detail below with reference to the accompanying drawings, wherein: FIG. 1 is a view of a fiber composite wheel frame provided by a first preferred embodiment of the present invention. 2 is a schematic perspective view of a curved frame strip of a fiber composite material wheel frame provided by the first preferred embodiment of the present invention; The third figure is a cross-sectional view along the line 3-3 of the second figure; the fourth figure is a schematic view of the fiber composite material wheel frame provided by the first preferred embodiment of the present invention applied to a bicycle; A cross-sectional view of a curved frame of a fiber composite wheel frame according to a second preferred embodiment of the present invention; and a sixth embodiment of the fiber composite wheel frame of the third preferred embodiment of the present invention 3 is a cross-sectional view along the line 7-7; the eighth picture is a cross-sectional view along the line 8-8; the ninth picture is the sixth line along the line 9- 9 is a cross-sectional view taken along line 10-10; and the eleventh is a cross-sectional view taken along line 11-11 of the first figure.

The Applicant first describes the same or similar elements or structural features thereof in the embodiments and the drawings which will be described below.

Referring first to the first drawing, a fiber composite wheel frame 10 according to a first preferred embodiment of the present invention includes twelve curved frame strips 20. Referring to the second and third figures, each of the curved frame strips 20 has a foam body 30 and an outer layer 40 of fiber composite material wrapped around the foam body 30.

The foam 30 is made of a foamed material, such as Polyurethane (PU) or Polycarbonate (PC), and has high toughness and impact resistance.

The outer layer 40 of the fiber composite material is made of a composite material such as carbon fiber, glass fiber or other polyester fiber, and has a hard, low specific gravity and high temperature resistance. In the present embodiment, carbon fibers are used as an illustrative example. Since the foam body 30 is formed into a specific shape, after the outer layer 40 of the fiber composite material is coated on the foam body 30, a recessed outer side portion 42 and a convex inner portion 44 are formed. And a connecting surface 46 and two side surfaces 48 between the outer portion 42 and the inner portion 44, wherein the connecting surface 46 and the connecting surface 46 of the other curved frame strip 20 are hot pressed. The two curved frames 20 are connected by a connecting surface 46 of the fiber composite outer layer 40 into a circular wheel frame 10, and the connecting faces 46 of the two adjacent curved frame bars are connected. A support surface is then formed which joins the outer portion 42, the inner portion 44 and the two side surfaces 48 of the two adjacent curved frame strips to provide support for the wheel frame, such as I-beam.

Referring to the fourth figure, the wheel frame 10 is used to set a tire 50 on the outer side portion 42 of the fiber composite outer layer 40 of the curved frame strip 20, and is compatible with one of the bicycles by a plurality of spokes 60. The hub 70, which is driven by the rider, is coupled, at which point the inner portion 44 of the fiber composite outer layer 40 of each of the curved frame strips 20 faces the hub 70.

The fiber composite fiber composite material is worth mentioning that the wheel frame 10 is composed of a foaming body 30 having a cushioning function and a fiber composite material outer layer 40 coated on the outside of the foam body 30, and The plurality of curved frame strips 20 are connected by the same material (fiber composite composite material), so that the wheel frame 10 is not only relatively light in weight, but also the whole wheel frame is solid by the arrangement of the foam body. The structure allows the outer layer 40 of the fiber composite to be relatively thin and not easily broken. In addition, the number of the curved frame strips 20 of the fiber composite material wheel frame 10 is not limited, and may be three. , five, eight or ten, etc., as long as the number of curved frame strips can be connected into a ring shape.

In the foregoing embodiment, the tire 50 is secured to the outer portion 42 of the fiber composite outer layer 40 of the curved frame strips 20 by gluing. Referring to FIG. 5, a second preferred embodiment of the present invention further provides another fiber composite material wheel frame. The difference between the curved frame bar 80 and the arc-shaped frame bar 20 is that the curved frame bar 80 The fiber composite outer layer 90 further has two hook portions 94 extending from the outer side portion 92, whereby the hook portions 94 can be engaged with the tire so that the tire and the wheel frame are more stably coupled.

Referring to the sixth to tenth drawings, a third preferred embodiment of the present invention further provides another fiber composite material wheel frame. The difference between the curved frame strip 20' and the arc-shaped frame strip 20 is that the arc The foam body 30' of the frame strip 20' has two grooves 32', and when the fiber composite outer layer 40' of the curved frame strip 20' is coated on the foam 30', the fiber composite outer layer 40 A portion of the 'filled in the grooves 32', thereby forming the reinforcing ribs 42', so that not only the structural strength of the wheel frame is better, but also the combination of the fiber composite outer layer 40' and the foam 30' is more effective. it is good. In the third preferred embodiment, each of the grooves 32' and the reinforcing ribs 42' extend substantially along the long axis of the curved frame strip 20', that is, from the outer layer 40 of the fiber composite material. The position of one of the connecting faces 46' extends toward the other connecting face 46' and the groove is also extended at the connecting face as shown in the eighth figure, which increases the structural strength of the two connecting faces when joined. However, the number and shape of the grooves 32' and the reinforcing ribs 42' of each of the curved frame strips 20' are not limited to the lateral reinforcing ribs, and may be as shown in the sixth and ninth and tenth views. Curved frame strip 20', which The groove 32" of the foam 30' and the reinforcing rib 42" of the outer layer 40' of the fiber composite are disposed around the foam 30'.

The invention is characterized in that the foamed material is used as the core material and grooves are formed on the foamed material to form reinforcing ribs, which is a structure which cannot be achieved by the blow-molded fiber composite material wheel frame. When assembling the tire, the wheel frame and the drum are combined by a certain pulling force of the wire of the spoke wire, and the spoke and the wheel frame will have an angle, and the angle will cause the wheel frame to generate a lateral internal stress. The reinforcing ribs between the foamed materials produce a higher tensile strength than the hollow wheel frame, minimizing the lateral internal stress of the wheel frame, and the tension of the wire can be more easily raised and maintained.

When the wheel frame is braked, it will heat up due to friction with the brake pad. The traditional hollow carbon fiber wheel frame will be deformed by heat due to lack of support, but the wheel frame in this case can avoid deformation of the wheel frame because of the support of the foam material. The situation.

The ribbed foam wheel frame is more dispersible and absorbs stress and vibration than the hollow wheel frame during riding, making the ride more comfortable.

The ribbed foam wheel frame has better rigidity and torsion in all directions than the hollow wheel frame, so the force of the pedaling can be transmitted more completely, and the efficiency of pedaling is easier to play.

Finally, it must be explained again that the constituent elements disclosed in the foregoing embodiments of the present invention are merely illustrative and are not intended to limit the scope of the present invention. The structure of the present invention can also be applied to a cutter wheel or a disc wheel or the like. Alternatives or variations of equivalent components are also covered by the scope of the patent application in this case.

10‧‧‧Fiber composite wheel frame

20‧‧‧ curved frame

30‧‧‧Foam

40‧‧‧Fiber composite outer layer

42‧‧‧Outside

44‧‧‧ inside part

46‧‧‧ Connection surface

48‧‧‧ side surface

50‧‧‧ tires

60‧‧‧ spokes

62‧‧‧Card end

64‧‧‧ filament department

70‧‧‧Flower hub

80‧‧‧ curved frame

90‧‧‧Fiber composite outer layer

92‧‧‧Outside

94‧‧‧Hook

20’‧‧‧Arc frame

30’‧‧‧Foam

32’‧‧‧ trench

40'‧‧‧Fiber composite outer layer

42’‧‧‧ reinforcing ribs

46’‧‧‧ Connection surface

32"‧‧‧ trench

42"‧‧‧ reinforcing ribs

1 is a plan view of a fiber composite material wheel frame according to a first preferred embodiment of the present invention; and FIG. 2 is a curved view of the fiber composite material wheel frame provided by the first preferred embodiment of the present invention. 3 is a cross-sectional view of the second drawing along the line 3-3; the fourth drawing is a schematic view of the fiber composite wheel frame provided by the first preferred embodiment of the present invention; 5 is a cross-sectional view of a curved frame of a fiber composite wheel frame provided by a second preferred embodiment of the present invention; and a sixth view of the fiber composite wheel frame provided by a third preferred embodiment of the present invention A perspective view of a curved frame strip; a seventh view is a cross-sectional view of the sixth figure along the line 7-7; the eighth figure is a cross-sectional view of the sixth figure along the line 8-8; A cross-sectional view taken along line 10-10; and a cross-sectional view taken along line 11-11 of the first figure.

10‧‧‧Fiber composite wheel frame

20‧‧‧ curved frame

40‧‧‧Fiber composite outer layer

42‧‧‧Outside

44‧‧‧ inside part

46‧‧‧ Connection surface

48‧‧‧ side surface

Claims (8)

A fiber composite wheel frame comprises: a plurality of curved frame strips, each of the curved frame strips having a foam made of a foamed material, and a cladding coated on the outside of the foam and composited by a fiber composite material An outer layer of a fiber composite material made of a material, wherein the curved frame strips are connected in a ring shape by an outer layer of the fiber composite material to form a wheel frame, and the connecting faces of the two adjacent curved frame strips form a support surface after being connected. The support surface can provide rib-like support for the wheel frame. The fiber composite material wheel frame according to claim 1, wherein the foam of each of the curved frame strips has at least one groove, and a part of the outer layer of the fiber composite material of each of the curved frame strips is filled with foaming. Inside the groove of the body. The fiber composite material wheel frame according to claim 2, wherein the groove of the foam of each of the curved frame strips extends substantially along the long axial direction of the curved frame strip and surrounds the foam. The fiber composite material wheel frame according to claim 2, wherein the groove of the foam of each of the curved frame strips extends along a short axial direction of the curved frame strip and surrounds the foam. The fiber composite material wheel frame of claim 1, wherein the fiber composite material outer layer of each of the curved frame strips has a side portion for arranging the outer side of the tire, an inner portion opposite to the outer side portion, and engaging The connecting surface and the two side surfaces between the outer portion and the inner portion are connected to the fiber composite material by the connecting surface of the connecting portion and the other curved frame strip. Fiber composite wheel frame as described in claim 5 The connecting surface of the curved frame strip is also provided with a groove. The fiber composite material wheel frame according to claim 5, wherein the fiber composite material outer layer of each of the curved frame strips further has two hook portions extending from the outer side portion. The fiber composite wheel frame of claim 1, wherein the fiber composite material is a carbon fiber composite material.