KR102610998B1 - Bicycle of assemble frame - Google Patents

Abstract

The present invention relates to a bicycle frame in which the frame surface of the bicycle is protected and the components of the frame are assembled in a prefabricated manner.
High-strength plastic pipe or bamboo outer surface; A bicycle frame is constructed by packaging stainless steel plates, and the head tube includes an H1-coupling member and an H2-coupling member, and the outer peripheral surface of the bottom bracket shell includes; A curved coupling member provided with a B1-coupling member, a B2-coupling member, and a B3-coupling member is formed; On the upper side of the seat tube; S1-joint member and S2-joint member on the lower side; A lower coupling member is constructed and installed on the B2-coupling member of the bottom bracket shell, and the B3-coupling member of the bottom bracket shell includes: The chainstays are assembled in a prefabricated manner, and a seat stay is formed between the wheel fixing member formed at the tail of the chainstay and the S2-coupling member of the seat tube; At both ends of the top tube; The head member and the tail member are configured and assembled into the H1-coupling member of the head tube and the S1-coupling member of the seat tube, and at both ends of the bottom tube; A prefabricated bicycle frame that consists of a head member and a tail member and is prefabrically coupled to the H2-joint member of the head tube and the B1-joint member of the bottom bracket shell, thereby protecting the surface of the frame.

Description

Bicycle of assemble frame}

The present invention relates to a bicycle frame, and more specifically to a bicycle prefabricated frame in which the bicycle frame can be disassembled and assembled.

The present invention relates to a bicycle frame, and more specifically to a bicycle prefabricated frame in which the bicycle frame can be disassembled and assembled.

In general, as illustrated in Figure 19 of the attached drawing, a bicycle frame has a head tube (1) disposed in front of the seat tube (2) that is installed on the upper side of the bottom bracket shell (3), and the seat tube (2) and the head tube ( 1) is fixedly coupled to each other by the top tube (4) and the bottom tube (4a), and also has a seat stay (6) behind the seat tube (2) and a chainstay (3) behind the bottom bracket shell (3). 5) are fixedly combined to form a bicycle frame,

Typically, the distal ends of the top tube (4) and the bottom tube (4a), which are fixedly coupled to the head tube (1), are formed as curved portions to be in close contact with the circumferential outer circumferential surface of the head tube (1). It is arranged in close contact with the outer peripheral surface and is fixedly coupled to the head tube (1) as one body through welding means, and the top tube (4) and bottom tube (4a) are connected to the seat tube (2) and the bottom bracket. It is fixedly coupled to the shell (3) by welding means.

In the process of fixing the top tube (4) and bottom tube (4a) to the seat tube (2) and bottom bracket shell (3), including the head tube (1), by welding means, thermal deformation due to welding heat occurs. A separate specialized manufacturing tool (tool) is required, and the inherent heat treatment characteristics of the frame tube are reduced due to welding heat, causing a safety issue with the bicycle frame as the bicycle frame is damaged due to a decrease in the strength of the frame joint.

So, the safety issue of the bicycle frame; In order to improve the lighter bicycle frame, a butted tube was developed in which the thickness of the tubes at both ends of the bicycle top tube (4) and bottom tube (4a) is somewhat thicker, while the thickness of the central part of the tube is thinner. Therefore, lighter bicycle frames are being manufactured, but the production process for these butted tubes is more complicated, so the manufacturing cost of the bicycle frame is high. Above all, the butted tubes are thin, so they lack repeated external shock absorption, making the tubes more difficult to manufacture. Fatigue accumulation was severe, and as a result, there was a problem of deterioration of bicycle riding comfort due to a decrease in the durability of the bicycle frame and a decrease in external shock absorption rate.

As another means of improving the stability of bicycle frames and lighter bicycle frames, recently, bicycle carbon frames that are lighter and have improved shock absorption using carbon materials have been widely used. However, bicycle carbon frames are an integrated bicycle frame using carbon materials. Since it was manufactured as a pressure molded product, the manufacturing process was very complicated, so the production cost was high, and there was a problem in that it was difficult to repair and restore when the bicycle frame was damaged.

In addition, most of the joints of each bicycle frame are composed of an integrated fixed type, so the production work of integrating each component of the bicycle frame into one body requires a specialized bicycle frame factory and specialized technology. Additionally, if necessary, bicycle transportation is required during the bicycle transportation process. There is a problem in that it is difficult to separate and assemble the frame.

On the one hand, bicycle frames using bamboo, which are light and have good external shock absorption, have been developed for a long time. However, bamboo frames cannot be manufactured as a single piece like carbon frames, and due to the feature of non-welding, the joint technology that combines frames This is difficult and the composition is complex, making it unsuitable for mass production.

In addition, bamboo frames have a problem in that the bamboo cracks or splits depending on the bamboo's surface treatment technology, and when exposed to ultraviolet rays and moisture for a long time, the bamboo ages rapidly and the strength of the bamboo decreases significantly.

In addition, a bicycle frame using high-strength plastic, which is lightweight and has good external shock absorption, was developed, but the strength of plastic was lower than that of steel frames and the surface hardness was low, causing frame damage and severe surface scratches.

Therefore, the present invention was designed to solve the various problems described above,

In terms of the construction means of the bicycle frame, the prefabricated feature omits the separate specialized manufacturing equipment for manufacturing the bicycle frame, making it easy to implement the prefabricated bicycle frame using high-strength plastic or bamboo, and making the prefabricated bicycle frame lighter. The purpose is to provide a prefabricated bicycle frame in which the surface of the high-strength plastic or bamboo is wrapped with a stainless steel plate to protect the surface of the bicycle frame and increase the rigidity of the bicycle frame.

On the outer peripheral surface of high-strength plastic pipe or surface-treated pipe-shaped bamboo; Stainless steel plates are packed to form a bicycle frame,

At both ends of the head tube; The cross-section is protected, the bearing member where the bearing is created is combined, and the head tube is composed of an H1-coupling member and an H2-coupling member, and also at both ends of the bottom bracket shell; The cross-section is protected and the bearing member on which the bearing is mounted is coupled to the outer peripheral surface of the bottom bracket cell; It is possible to provide a means for constructing a curved coupling member provided with a B1-coupling member, a B2-coupling member, and a B3-coupling member.

On the upper side of the seat tube; S1-coupling member and S2-coupling member, including a clamp member whose upper surface is protected, on the lower side; Each lower coupling member whose lower surface is protected is constructed and installed upright on the B2-coupling member of the bottom bracket shell, and the B3-coupling member of the bottom bracket shell includes: With the chainstays assembled in a prefabricated manner, a means for forming a seat stay can be provided between the wheel fixing member formed at the tail of the chainstay and the S2-coupling member of the seat tube.

At both ends of the top tube; It consists of a head member and a tail member that protect the cross-section, and is coupled to the H1-coupling member of the head tube and the S1-coupling member of the seat tube in a turnbuckle manner, and at both ends of the bottom tube; A head member and a tail member that protect the cross-section are formed, and a means for coupling to the H2-coupling member of the head tube and the B1-coupling member of the bottom bracket shell in a turnbuckle manner can be provided.

The bicycle frame is; On the outer peripheral surface of the frame, it is made of high-strength plastic pipe or bamboo that has been surface treated and processed into a pipe shape, including a drying step; A thin stainless steel plate can be rotatably attached to protect the outer peripheral surface and provide a means of increasing rigidity.

On the head tube; A first coupler and a second coupler are formed so that the H1-couple member is arranged to protrude from the inside of the head tube to the outside through the first coupler and is fixedly coupled with a fastening member, and the H2-couple of the head tube is Absence is; It is disposed to protrude from the inside of the head tube to the outside through the second coupling hole and is fixedly coupled with a fastening member to provide a means for coupling the top tube to the H1-coupling member of the head tube and the bottom tube to the H2-coupling member. can do.

In the bottom bracket shell; A curved coupling member formed with a first fastening hole, a second fastening hole, and a third fastening hole, respectively, and a flat member formed with a female thread are provided in the circumferential direction, and B2-including the B1-locking member are provided on the inside of the bottom bracket shell. The coupling member and B3-coupling member each protrude to the outside of the curved coupling member. The B1-coupling member of the bottom bracket shell has a bottom tube, the B2-coupling member has a seat tube, and the B3-coupling member consists of a pair. A means by which the chainstays are each fixedly coupled may be provided.

On the lower side of the seat tube; It is in close contact with the bottom surface to protect the cross-section, and the lower coupling member, which is coupled to the B2-coupling member of the bottom bracket shell, is fixedly coupled, and is also fixedly coupled to the upper side of the seat tube; It is in close contact with the upper surface to protect the cross-section, and a clamp member that clamps the bicycle seat post is fixedly coupled, and is also fixed to the upper side of the seat tube; The first coupler and the second coupler are formed to face each other, so that the S1-coupling member is arranged to protrude from the inside of the seat tube to the outside, and is fixedly coupled with a fastening member, and the S2-coupling member is located on the inside of the seat tube. It is disposed to protrude outward and is fixedly coupled with a fastening member, wherein the S1-coupling member includes a top tube and the S2-coupling member includes a top tube; A means by which the seatstays are coupled may be provided.

At the tip of the top tube; It is in close contact with the end surface of the top tube to protect the end surface, and a head member composed of a screw fastening member having a turnbuckle-type thread part is fixedly coupled to the tail part of the top tube; The cross-section is protected by being closely attached to the cross-section of the top tube, and the tail member formed with a turnbuckle-type thread is fixedly coupled, and a means can be provided by which the head member and the tail member of the top tube are fixedly coupled to each other by a pull-out member. .

The chainstays are; The chain frame includes a pair of chain frames facing each other, a chain head member coupled to the bottom bracket shell, and a wheel fixing member to which a bicycle rear wheel is coupled; In addition to being coupled to the chain head member at a predetermined interval, the tail portion of each chain frame may be provided with a means for expanding at a predetermined interval.

The seatstays are; The seat frame consists of a pair of seat frames facing each other and a seat head member coupled to a seat tube; In addition to being coupled to the seat head member at a predetermined interval, each seat frame tail portion may be provided with a means for expanding at a predetermined interval.

The H1-coupling member of the head tube is; It is composed of a T-bolt shape having a head made of an arc-shaped curved body and a screw body in which a screw portion is formed, and on the outer peripheral surface of the screw body of the H1-coupling member; A screw portion having a male thread is formed on the inside of the screw body; A threaded portion having a female thread is formed to be fixedly coupled to the head tube, and a means for coupling the top tube to the screw body of the H1-coupling member can be provided.

The H2-joining member of the head tube is; It is composed of a T-bolt shape having a head composed of an arc-shaped curved body and a screw body on which a screw portion is formed, and on the outer peripheral surface of the screw body; A screw portion having a male thread is formed at the distal end of the screw body; It is characterized by forming a threaded portion with a downwardly inclined inclined surface and a female thread inclined at a predetermined angle, so that it is fixedly coupled to the head tube and can provide a means for coupling the bottom tube to the H2-coupling member screw body.

The curved coupling member is; The inner and outer surfaces are composed of curved bodies in the shape of an arc, so that a flat portion is formed on the outer peripheral surface of each of the first to third fastening holes of the curved coupling member, and the B1-coupling members to B3-coupling members are respectively fastened, and B1-coupling members are connected to each other. In each of the coupling members to B3-coupling members; A planar member on which a female thread is formed may be provided and fastened to provide a means for tightly coupling the planar member to each of the planar portions of the curved coupling member.

The S1-coupling member of the seat tube is; The head of the S1-coupling member is connected to the inner surface of the seat tube, and is composed of a head with a T-bolt shape and an arc-shaped curved body on the inner and outer surfaces, and a screw body with a screw portion with male threads. The screw body of the member protrudes outward through the first coupling hole of the seat tube and is characterized as a fastening member, and can provide a means for coupling the top tube to the screw body of the S1-coupling member.

The S2-coupling member of the seat tube is; The outer peripheral surface of the screw body of the S2-coupling member is composed of a T-bolt shape with a head formed of an arc-shaped curved body on the inner and outer surfaces and a screw body formed with a screw part; A screw portion having a male thread is formed at the end of the screw body; The screw body of the S2-coupling member is characterized by a downwardly sloping inclined surface and a threaded portion having a female thread slanted at a predetermined angle; A means by which the seatstays are coupled may be provided.

The head member of the top tube is; A screw coupling member having a male threaded portion is fixedly coupled to the inside of the cylindrical body, and is fixedly coupled to the inner surface of the distal end of the top tube by adhesive means, and the tail member of the top tube includes: A threaded portion having a female thread in the opposite direction to the threaded portion of the head member is formed on the inside of the cylindrical body, and is fixedly coupled to the inner surface of the tail portion of the top tube by adhesive means, and the head member and the tail member are coupled to each other by a pull-out member. As a result, the head member and tail member of the top tube can be provided with a means for being fixedly coupled to the top tube with an adhesive means and a pull-out member.

The H1-joint member of the head tube is; It is composed of a screw body consisting of a head and a screw part having a T-bolt shape, wherein the head of the H1-coupling member is; It is composed of a plate shape with an arc-shaped curved body in the circumferential direction, and the screw body of the H1-coupling member is; It is composed of a threaded portion with a male thread and a non-threaded portion, and the screw body is configured to protrude from the outer peripheral surface of the head of the H1-coupling member, thereby providing a means for coupling the top tube to the H1-coupling member of the head tube.

The H2-joining member of the head tube is; It is composed of a screw body having a head and a screw part having a T-bolt shape, wherein the head of the H2-coupling member includes: It is composed of a plate shape with an arc-shaped curved body in the circumferential direction, and on the outer peripheral surface of the H2-coupling member screw body; A screw portion having a male thread is formed at the distal end of the screw body; It is possible to provide a means for coupling the bottom tube to the head tube by forming a threaded portion having a downwardly inclined inclined surface and a downwardly inclined female thread at a predetermined angle.

In addition, in the screw portion having a female thread of the H2-coupling member screw body; An adapter member composed of first male screws and second male screws of different diameters is fixedly coupled to the screw body of the H2-coupling member; It is possible to provide a means for forming a screw portion having a second male screw that is inclined rearwardly and downwardly at a predetermined angle.

The thread pitch of the threaded part formed in the tail member of the top tube is formed to be larger than the screw pitch of the threaded part formed in the head member of the top tube, so that the tail member of the top tube is preferentially adhered to and fixed to the seat tube S1-coupling member. In addition to being combined, the head member of the top tube is; It is possible to provide a means for being fastened to the H1-coupling member of the head tube and fixedly coupled to the H1-coupling member of the head tube by a locking fastening member.

The screw pitch of the threaded part formed in the tail member of the bottom tube is formed to be larger than the screw pitch of the threaded part formed in the head member of the bottom tube, so that the tail member of the bottom tube is preferentially fixed to the B1-coupling member of the bottom bracket shell. It is combined, and the head member of the bottom tube is; It is possible to provide means for being fastened to the H2-coupling member of the head tube and fixedly coupled to the H2-coupling member of the head tube by a locking fastening member.

The top tube of a bicycle frame is; It is made of surface-treated pipe-shaped bamboo and is packaged with a stainless steel plate attached to the outer circumferential surface. Adhesive is applied to the outer circumferential surface of the bamboo constituting the top tube, and the stainless steel plate is rotatably attached to wrap around the outer peripheral surface of the bamboo, In addition, the joint gap formed at the joint at both ends of the stainless steel plate can be coated with a stainless steel coating and polished to provide a means for finishing the joint at both ends of the stainless steel plate.

The size of the stainless steel plate wrapped around the outer circumference of the bamboo is larger than the circumference of the bamboo outer circumference by a predetermined length, and adhesive is applied to one side and is rotatably attached to the outer circumference of the bamboo. First, the outer circumference of one end of the attached stainless steel plate is The end portions of the stainless steel plates are attached in an overlapping manner, and the overlapping end portions of the stainless steel plates are coated with a stainless steel coating and polished to provide a means for finishing the joints of the end portions of the stainless steel plates.

As detailed in the above description, the bicycle frame of the present invention is a prefabricated frame type, so the welding means is omitted at the joint of the bicycle frame, so there is no thermal deformation due to welding heat, making it easy to manufacture the frame. In addition, the carbon frame of the press molded product and It has the advantage of omitting the complex manufacturing process that comes with the same integrated frame configuration.

Bicycle frames are made of various lightweight frames, including bamboo, high-strength plastic, and carbon pipe, making excellent material selection.

In addition, the bicycle frame of the present invention is light in weight and has a high-strength plastic pipe with excellent elasticity or a very thin stainless steel plate wrapped around the outer circumferential surface of bamboo, so that scratches on the surface of the frame are greatly improved and the external shock absorption is excellent due to excellent elasticity, so the bicycle frame has excellent elasticity. The riding comfort is improved.

On the other hand, the prefabricated bicycle frame of the present invention is constructed in an assembly method, making it easy to separate and assemble the bicycle frame, thereby improving the transportation process. Above all, the bicycle frame can be assembled very easily, so it is possible to assemble the bicycle frame very easily, so it is possible to assemble the bicycle frame very easily. It has the advantage of being easy to manufacture a bicycle frame because the need is small, and the main bicycle frame can be partially replaced if necessary, making it excellent for reconfiguring the bicycle frame.

Figure 1 is a perspective view illustrating one embodiment of the bicycle prefabricated frame of the present invention.
Figure 2 is a cross-sectional view illustrating an embodiment of the H1-coupling member and H2-coupling member coupled to the head tube in Figure 1.
Figure 3 is a diagram illustrating a cross-sectional view of the head tube along line A-A' in Figure 2.
Figure 4 is a cross-sectional view illustrating an embodiment of the S1-coupling member and the S2-coupling member, including the upper coupling member and the lower coupling member, which are coupled to the seat tube in Figure 1.
Figure 5 is a cross-sectional view illustrating the S1-coupling member and S2-coupling member coupled to the seat tube in Fig. 4.
Figure 6 is a perspective view and a cross-sectional view illustrating an embodiment of the B2-coupling member and the B3-coupling member, including the B1-coupling member coupled to the bottom bracket shell in Figure 1.
Figure 7 is a cross-sectional view illustrating the bottom bracket shell and curved coupling member in Figure 6.
Figure 8 is a longitudinal cross-sectional view illustrating an embodiment of the top tube and bottom tube in Figure 1.
Figure 9 is a longitudinal cross-sectional view illustrating another embodiment of the top tube and bottom tube in Figure 8.
Figure 10 is a diagram illustrating an embodiment of the chainstay coupled to the bottom bracket shell in Figure 1.
Figure 11 is a diagram illustrating one embodiment of the seat stay coupled to the seat tube in Figure 1.
Figure 12 is a diagram illustrating the longitudinal cross-sectional view and important components of the chainstay in Figure 10.
Figure 13 is a longitudinal cross-sectional view illustrating one embodiment of the seat frame in Figure 11.
Figure 14 is a longitudinal cross-sectional view illustrating another embodiment of the H1-coupling member and the H2-coupling member coupled to the head tube in Fig. 2.
Figure 15 is a diagram illustrating an example of a coupling relationship in which the head tube and seat tube of the present invention in Figure 1 are assembled in a prefabricated manner by a top tube.
Figure 16 is a diagram illustrating an example of a coupling relationship in which the head tube and bottom bracket shell of the present invention in Figure 1 are assembled in a prefabricated manner by the bottom tube.
Figure 17 is a cross-sectional view illustrating an embodiment in which a stainless steel plate is packed on the outer peripheral surface of the top tube of the present invention in Figure 8.
Figure 18 is a cross-sectional view illustrating another embodiment of Figure 17 in which a stainless steel plate is packed on the outer peripheral surface of the top tube of the present invention.
Figure 19 is a diagram illustrating a conventional bicycle frame.

In the bicycle frame of the present invention, as illustrated in Figure 1 of the attached drawing, the head tube 100 is disposed in front of the seat tube 200, which is installed on the upper side of the bottom bracket shell 300 of the bicycle, and the head tube 100 and the seat are connected. The tube 200 is fixedly coupled to each other in a turnbuckle manner by the top tube 400, and the head tube 100 and the bottom bracket shell 300 are fixedly coupled to each other in a turnbuckle manner by the bottom tube 500. A bicycle assembly frame is formed by combining the chainstay 600 to the rear of the bottom bracket shell 300 and the seat stay 700 to the rear of the seat tube 200,

The bicycle frame 1000 has an outer circumferential surface made of high-strength plastic pipe or surface-treated pipe-shaped bamboo; The stainless steel plate is packed to protect the outer peripheral surface of the bicycle frame (1000).

At both ends of the head tube 100; In the head tube 100, the cross-section is protected and the bearing members 130 and 140, in which bearings are created, are combined; An H1-coupling member 110 and an H2-coupling member 120 are formed, and are also located at both ends of the bottom bracket shell 300; The cross-section of the bottom bracket shell 300 is protected, and the bearing members 350 and 350' on which bearings are mounted are coupled to the outer peripheral surface of the bottom bracket shell 300; The curved coupling member 340 is provided with a B1-coupling member 310, a B2-coupling member 320, and a B3-coupling member 330.

And on the upper side of the seat tube 200; S1-coupling member 210 and S2-coupling member 220, including a clamp member 230 that protects the upper surface of the seat tube 200, are located on the lower side; The lower coupling members 240 that protect the lower surface of the seat tube 200 are each configured and installed upright on the B2-coupling member 320 of the bottom bracket shell 300. In the B3-coupling member 330; With the chainstay 600 assembled in a prefabricated manner, a seat stay 700 is placed between the wheel fixing member 660 formed at the tail of the chainstay 600 and the S2-coupling member 220 of the seat tube 200. ) is composed.

Also, at both ends of the top tube 400; It consists of a head member 410 and a tail member 420 that are in close contact with the cross-section and protect the cross-section, and the H1-coupling member 110 of the head tube 100 and the S1-coupling member 210 of the seat tube 200 ) in a turnbuckle manner, and at both ends of the bottom tube 500; It consists of a head member 510 and a tail member 520 that are in close contact with the cross-section and protect the cross-section, and the H2-coupling member 120 of the head tube 100 and the B1-coupling member of the bottom bracket shell 300 ( 310) has the characteristic of being connected to the turnbuckle method.

Therefore, the outer peripheral surface of the bicycle frame is protected with a very thin stainless steel plate, and the rigidity of the bicycle frame increases depending on the rigidity of the stainless steel plate. Additionally, the bicycle frame is made of high-strength plastic pipe or bamboo with excellent elasticity, providing excellent external shock absorption. do.

Here, the material of the seat tube 200, top tube 400, bottom tube 500, chainstay 600, seat stay 700, head tube 100, and bottom bracket shell 300 is aluminum. It can be used in a variety of materials, including titanium, stainless steel, steel, carbon materials, wood, reinforced plastic, bamboo, etc.

Preferably, the inside of the top tube 400 and the bottom tube 500 are sealed, and compressed air is stored using a universal air injection means (not shown), so that the rigidity due to the elastic force of the compressed air is greatly increased. As a result, the top tube 400 and bottom tube 500 can be made thinner.

Hereinafter, a preferred embodiment according to the structure and operation of the head tube 100 of the present invention will be described based on FIGS. 2 to 3 of the accompanying drawings.

As illustrated in Figure 3 and “Figure 3-1” of the accompanying drawings, the head tube 100 is; On the outer peripheral surface of the head tube 100, it is composed of a high-strength plastic pipe or bamboo that has been surface-treated and processed into a pipe shape, including a drying step; A thin stainless steel plate (100a) is rotatably attached and packaged to protect the outer peripheral surface.

As illustrated in Figure 2 of the attached drawing, at the top of the head tube 100; The upper bearing member 130, which is in close contact with the upper surface and protects the cross-section, and on which the bearing is mounted, is in close contact with the lower surface at the lower part to protect the cross-section, and the lower bearing member 140, on which the bearing is mounted, is fixedly coupled to each other. .

Also in the head tube 100; A first coupler 101 and a second coupler 102 are formed vertically in the axial direction, so that the H1-couple member 110 protrudes outward from the inside of the head tube 100 through the first coupler 101. It is arranged and fixedly coupled with the fastening member 114, and the H2-coupling member 120 of the head tube 100 protrudes outward from the inside of the head tube 100 through the second coupler 102. It is arranged and fixedly coupled with a fastening member 126.

Therefore, as illustrated in FIG. 15 of the accompanying drawing, the H1-coupling member 110 of the head tube 100 includes; The head member 410 of the top tube 400 is coupled to the H2-coupling member 120 of the head tube 100 as illustrated in FIG. 16 of the attached drawing; The head member 510 of the bottom tube 500 is characterized by being coupled with a turnbuckle type screw connection.

Here, the above-described upper and lower bearing members 130 and 140 are means for mounting bearings that support the front fork of a bicycle, and are not limited to specific technical means, and conventional bearing members already known can be provided. This is a self-evident fact.

As illustrated in “Figure 2-1” in FIG. 2, the H1-coupling member 110 of the head tube 100 includes; It is composed of a T-bolt shape having a head 111 whose inner and outer surfaces are made of an arc-shaped curved body, and a screw body 112 on which a screw portion 112a is formed, and the H1-coupling member 110 and the screw body 112 are formed. On the outer circumference of; While the threaded portion 122a having a male thread is formed, a threaded portion 113 having a female thread is formed inside the screw body 112.

In this way, the head 111 of the H1-coupling member 110 is tightly coupled to the inner surface of the head tube 100, as illustrated in Figure 3 of the attached drawing, and the screw body of the H1-coupling member 110 (112) is; As illustrated in FIGS. 2 and 3 of the accompanying drawings, it protrudes outward through the first coupler 101 of the head tube 100 and is fastened with a fastening member 114.

Therefore, as illustrated in Figure 15 of the attached drawing, the H1-coupling member 110 is fixedly coupled to the head tube 100, and the H1-coupling member 110 has a screw portion 113 having a female thread of the screw body 112. The head member 410 of the top tube 400 is coupled to the screw turnbuckle method.

In addition, the H2-coupling member 120 of the head tube 100 is; As illustrated in "Figure 2-2" in FIG. 2 of the attached drawing, it is composed of a T-bolt shape with a head 121 composed of an arc-shaped curved body and a screw body 122 on which a screw portion 125 is formed. On the outer peripheral surface of the screw body 122; A screw portion 125 having a male thread is formed at the distal end of the screw body 122; A downwardly inclined inclined surface 124 is formed, and a threaded portion 123 having a female thread inclined at a predetermined angle A1 is formed.

In this way, the head 121 of the H2-coupling member 120 is coupled to the inner surface of the head tube 100, and the screw body 122 of the H2-coupling member 120 is connected to the second part of the head tube 100. It protrudes outward through the coupler 102 and is fastened with a fastening member 126.

Therefore, as illustrated in FIG. 16 of the accompanying drawing, the H2-coupling member 120 is fixedly coupled to the het tube 100, and the screw portion 123 has a female thread formed on the inclined surface of the H2-coupling member screw body 122. ) in; The head member 510 of the bottom tube 500 is characterized by being coupled by a screw coupling method.

Preferably, the H1-coupling member 110 of the head tube 100 includes a head portion 111 having a T-bolt shape and a screw body 112 in which a screw portion 112a is formed, as illustrated in FIG. 2 of the attached drawing. ), which consists of

The head portion 111 of the H1-coupling member 110 is; As illustrated in "Figure 2-1" in Figure 2 of the accompanying drawings, the screw body 112 of the H1-coupling member 110 is composed of a plate shape whose inner and outer surfaces are curved in an arc shape in the circumferential direction; Consisting of a threaded portion 112a with a male thread and a non-threaded portion 112b, the H1-coupling member 110 protrudes outward from the outer peripheral surface of the head 111 and is attached to the screw portion 112a of the screw body 112 with a fastening member ( 114) is provided.

Therefore, as described above, the head 111 of the H1-coupling member 110 is supported in close contact with the inner surface of the head tube 100, as illustrated in Figure 3 of the attached drawing, and the screw body 112 is attached to the head tube. It protrudes outward from the outer circumferential surface through the first coupler 101 of (100) and is fixedly coupled to the head tube 100 by the fastening member 114.

Also preferably, a screw portion 113 having a female thread is formed inside the screw body 112 of the H1-coupling member 110. Accordingly, as illustrated in FIG. 15 of the accompanying drawing, the threaded portion 113 having a female thread of the H1-coupling member 110 includes; The screw fastening member 414 formed on the head member 410 of the top tube 400 is fixedly coupled by a screw fastening method.

Meanwhile, as illustrated in “Figure 2-2” in FIG. 2, the H2-coupling member 120 of the head tube 100 is; It is composed of a head 121 having a T-bolt shape and a screw body 122 formed with a screw part 125 having a male screw,

The head portion 121 of the H2-coupling member 120 is; It is composed of a plate shape with an arc-shaped curved body on the inner and outer surfaces in the circumferential direction, and on the outer peripheral surface of the screw body 122 of the H2-coupling member 120; A screw portion 125 having a male thread is formed at the distal end of the screw body 122; A downwardly inclined inclined surface 124 is formed, and a threaded portion 123 having a predetermined angle A1 and a downwardly inclined female thread is formed.

Therefore, as illustrated in Figure 16 of the attached drawing, the screw fastening member 514 formed on the head member 510 of the bottom tube 500 is screwed to the threaded portion 123 having a female thread of the H2-coupling member 120. It is fixedly connected using a fastening method.

Also preferably, as illustrated in Figure 14 of the accompanying drawing, the screw portion 123' having a female thread formed on the screw body 122' of the H2-coupling member 120' includes; 14-1, an adapter member 127' composed of a first threaded portion 127a' having first male threads of different diameters and a second threaded portion 127b' having second male threads. are fixedly coupled.

Thus, in the screw body 122' of the H2-coupling member 120'; It is characterized by an adapter member 127' inclined rearward downward at a predetermined angle A3.

Therefore, as illustrated in "FIG. 16-1" in FIG. 16 of the accompanying drawings, the second screw portion 127b' of the adapter member 127' formed in the screw body 122' of the H2-coupling member 120' is It is coupled to the screw portion 514' having a female thread formed on the head member 510' of the bottom tube 500 by a screw coupling method, and at this time, the screw body 122' of the H2-coupling member is provided with a fastening member 126'. is fixedly fastened, the locking member 128' provided on the second threaded portion 127b' of the adapter member 12'7 is fastened so that the head member 510' of the bottom tube 500 is fixed. are combined.

Hereinafter, a preferred embodiment according to the configuration and operation of the B1-coupling member 310 to B3-coupling member 330 comprised in the bottom bracket shell 300 of the present invention is shown in Figures 6 to 7 of the attached drawings. Let me explain.

As illustrated in Figure 7 and "Figure 7-1" of the accompanying drawings, the bottom bracket shell 300 is composed of a high-strength plastic pipe or bamboo that has been surface treated and processed into a pipe shape, including a drying step, and the bottom bracket shell ( 300) on the outer circumferential surface; A thin stainless steel plate (300a) is rotatably attached and packaged to protect the outer peripheral surface.

At both ends of the bottom bracket shell 300 configured in this way; As illustrated in Figure 6 of the attached drawing, the bearing members 350 and 350', which are in close contact with the cross-sectional area to protect the cross-sectional area and are provided with bearings for the bicycle crankshaft, are respectively fixedly coupled.

Here, the bearing members 350 and 350' described above are means for mounting bearings that smoothly rotate the bicycle crankshaft, and are not limited to specific technical means, and conventional bearing members already known can be provided. is a self-evident fact.

And in the bottom bracket shell (300); As illustrated in Figure 7 of the accompanying drawings, a second coupler 302 and a third coupler 303 are formed including the first coupler 301 in the circumferential direction, and the curved coupler 340 In; On the outer peripheral surface of the curved coupling member 340, a second fastening hole 342 and a third fastening hole 343, including a first fastening hole 341, are formed in the circumferential direction, respectively; As illustrated in the accompanying drawings FIG. 6 and "FIG. 6-1", a second planar member 321 and a third planar member 331 are provided, including a first planar member 311 having a female thread nut shape. .

In this way, on the inside of the bottom bracket shell 300, the B1-coupling member 310 with male threads is fastened to the first fastening hole 341 of the curved coupling member 340 and is coupled to the first flat member 311. The B2-coupling member 320, which protrudes to the outside of the curved coupling member 340 and has male threads, is fastened to the second fastening hole 342 of the curved coupling member 340, and the second flat member 321 ) is coupled and protrudes to the outside of the curved coupling member 340.

In addition, on the inside of the bottom bracket shell 300, the B3-coupling member 330 with a male screw is fastened to the third fastening hole 343 of the curved coupling member 340, and the third flat member 331 is coupled. , it protrudes to the outside of the curved coupling member 340.

Therefore, as illustrated in Figure 1 of the attached drawing, the B1-coupling member 310 of the bottom bracket shell 300 has a bottom tube 500, the B2-coupling member 320 has a seat tube 200, and B3-coupling member 320 has a bottom tube 500. The coupling member 330 has a feature in which a pair of chainstays 600 are each fixedly coupled to each other.

Preferably, the curved coupling member 340 is; As illustrated in FIGS. 6 to 7 of the accompanying drawings, the inner and outer surfaces are composed of an arc-shaped curved body, and the outer peripheral surface of the first fastening hole 341 to the third fastening hole 343 of the curved coupling member 340 is provided, respectively. ; With the flat portions 341', 342', and 343' formed, the B1-coupling members 310 to B3-coupling members 330 are respectively fastened, and the B1-coupling members 310 to In each B3-coupling member 330; The above-mentioned flat members 311, 321, and 331 are provided and fastened to each of the flat parts 341', 342', and 343' of the curved coupling member 340. 311), (321), and (331) are tightly coupled.

Therefore, as illustrated in Figure 1 of the accompanying drawing, the B1-coupling member 310 and the flat member 311 have a bottom tube 500, and the B2-coupling member 320 and the flat member 321 have a seat tube ( 200) has the characteristic that the chainstay 600 is fixedly coupled to the B3-coupling member 330 and the flat member 331, respectively.

Hereinafter, a preferred embodiment according to the configuration and operation of the seat tube 200 of the present invention will be described with reference to Figures 4 and 5 of the accompanying drawings.

As illustrated in Figure 5 and "Figure 5-1" of the accompanying drawings, the seat tube 200 is composed of a high-strength plastic pipe or bamboo that has been surface treated and processed into a pipe shape, including a drying step, and has an outer circumferential surface of the seat tube. ; A thin stainless steel plate (200a) is rotatably attached and packaged to protect the outer peripheral surface.

On the lower side of the seat tube 200 configured in this way; As illustrated in Figure 4 of the accompanying drawing, the lower coupling member 240 is in close contact with the bottom surface to protect the cross-section, and is fixedly coupled to the B2-coupling member 320 of the bottom bracket shell 300, On the upper side of the seat tube 200; The clamp member 230, which is in close contact with the upper surface to protect the cross-section and clamps the bicycle seat post, is fixedly coupled.

In detail, the lower coupling member 240 has a step portion 244 and a coupling portion ( 242) is configured to be securely coupled to the inner bottom surface of the seat tube 200 by adhesive means and fixed to the B2-coupling member 320 of the bottom bracket shell 300 as illustrated in FIG. 1 of the attached drawing. It's very controversial.

In addition, the clamp member 230 includes a clamp body 232 that accommodates and secures a bicycle seat post with a cutout portion 234 formed, and is composed of a step portion 233 and a coupling portion 231 to form a seat tube. It is fixedly coupled to the inside of the upper surface of (200) by adhesive means.

And on the upper side of the seat tube 200; As illustrated in FIG. 5 of the accompanying drawing, the first coupler 201 and the second coupler 202 are formed to face each other, so that the S1-coupling member 210 is first coupled on the inside of the seat tube 200. It is disposed to protrude outward through the sphere 201 and is fixedly coupled with the fastening member 214, and the S2-coupling member 220 is connected to the second coupling member 202 on the inside of the seat tube 200. The currency is disposed to protrude outward and is fixedly coupled with a fastening member 226.

Accordingly, as illustrated in Figure 15 of the accompanying drawing, the top tube 400 is coupled to the S1-coupling member 210, and the S2-coupling member 220; As illustrated in FIG. 11 of the accompanying drawing, the seat stay 700 has the characteristic of being fixedly coupled.

Preferably, as illustrated in FIGS. 4 to 5 of the accompanying drawings, the S1-coupling member 210 of the seat tube 200 has a head portion ( 211) and a screw body 212 formed with a screw portion 213 having male threads, and the head 211 of the S1-coupling member 210 is coupled to the inner surface of the seat tube 200, and the S1-coupling member The screw body 212 of (210) protrudes outward through the first coupler 201 of the seat tube 200 and is fixedly fastened with the fastening member 214, as illustrated in FIG. 5 of the attached drawing. It has the characteristics of being

Therefore, as illustrated in FIG. 15 of the accompanying drawings, the top tube 400 is fixedly coupled to the seat tube 200 in a screw turnbuckle manner to the screw body 212 of the S1-coupling member 210.

And the S2-coupling member 220 of the seat tube is; As illustrated in FIGS. 4 and 5 of the accompanying drawings, it is in the shape of a T-bolt having a head 221 whose inner and outer surfaces are curved bodies in the shape of an arc, and a screw body 222 on which a screw portion 225 is formed. On the outer peripheral surface of the screw body 222 of the S2-coupling member 220; A screw portion 225 having a male thread is formed at the distal end of the screw body 222; A downwardly inclined inclined surface 224 is formed, and a threaded portion 223 having a female thread inclined at a predetermined angle A2 is formed.

In this way, the head 221 of the S2-coupling member 220 is coupled to the inner surface of the seat tube 200, and the screw body 222 of the S2-coupling member 220 protrudes to the outside of the seat tube 200. It has the characteristic of being fastened with a fastening member 226.

Therefore, as illustrated in FIG. 11 of the accompanying drawings, the screw portion 223 having a female thread formed inside the screw body 222 of the S2-coupling member 220 includes; The seat head member 710 constituting the pair of seat stays 700 is coupled by screwing and is fixedly coupled to the seat tube 200.

Hereinafter, a preferred embodiment according to the structure and operation of the top tube 400 of the present invention will be described with reference to Figure 8 of the attached drawings.

The top tube (400) is; As illustrated in Figure 8 and "Figure 8-3" of the accompanying drawings, the outer peripheral surface of the top tube 400 is composed of a high-strength plastic pipe or bamboo that has been surface-treated and processed into a pipe shape, including a drying step; A thin stainless steel plate (400a) is rotatably attached and packaged to protect the outer peripheral surface.

At the tip of the top tube 400 configured in this way; The head member 410, which is in close contact with the cross-section of the top tube 400 and is comprised of a screw fastening member 414 having a screw portion 415 with a turnbuckle-type male thread, is fixedly coupled to the cross-section, and the top tube ( 400) at the tail; The head member 210 of the top tube 400 is tightly coupled to the tail member 420, which is in close contact with the cross section of the top tube 400 to protect the cross section and has a threaded portion 424 with a turnbuckle-type female thread. and the tail member 420 are fixedly coupled to each other by the draw-out member 430.

Therefore, the outer peripheral surface of the top tube 400 is protected by the stainless steel plate 400a, and as illustrated in Figure 15 of the attached drawing, the head member 410 of the top tube 400 is the H1-coupling member of the head tube 100. It is coupled to 110 in a turnbuckle manner, and the tail member 420 of the top tube 400 is coupled to the S1-coupling member 210 of the seat tube 200 in a turnbuckle manner.

Preferably, as illustrated in "FIG. 8-1" in FIG. 8 of the accompanying drawings, the head member 410 of the top tube 400 is a screw coupling member ( 414) is fixedly coupled, a coupling portion 412 and a step portion 413 are formed on the outer periphery of the cylindrical body 411, and are fixedly coupled to the inner surface of the distal end of the top tube 400 by adhesive means, and the head The step portion 413 of the member 410 is tightly coupled to the cross section of the top tube 400.

Additionally, the tail member 420 of the top tube 400 is; As illustrated in “Figure 8-2” in Figure 8, a coupling portion 422 and a step portion 423 are formed on the outer peripheral surface of the cylindrical body 421, and on the inside of the cylindrical body 421; A threaded portion 424 having a female thread in the opposite direction to the threaded portion 415 of the head member 410 is formed and fixedly coupled to the inner surface of the tail portion of the top tube 400 by adhesive means, and the step of the tail member 420 The portion 423 is tightly coupled to the cross section of the top tube 400.

In addition, the coupling hole 425 formed in the tail member 420 of the top tube 400 and the fastening hole 414b formed in the screw coupling member 414 of the head member 410 are connected to the pull-out member 430. are connected to each other.

Therefore, the head member 410 and the tail member 420 of the top tube 400 are fixedly coupled to both ends of the top tube 400 with an adhesive means and a draw-out member 430.

Here, the screw fastening member 414 is; It is a typical fixing bolt composed of a head portion 414a and a threaded portion 414 with male threads, and a fastening hole 414b is formed on the inside.

Hereinafter, another preferred embodiment of the top tube 400 of the present invention will be described with reference to Figure 9 of the attached drawing.

The top tube (400) is; As illustrated in Figure 9 of the accompanying drawings, there is a tip of the top tube 400; A head member 410' formed with a threaded portion 414' having a turnbuckle-type female thread is fixedly coupled to the tail of the top tube 400; As described above, the tail member 420 on which the threaded portion 424 with a turnbuckle-type female thread is formed is fixedly coupled, and the head member 410' and the tail member 420 of the top tube 400 are drawn out members ( 430) and are fixedly coupled to each other.

At this time, coupling holes 415' and 425 are formed on the tail member 420 and the head member 410' of the top tube 400, and the draw-out member 430 is disposed and fastened with the fastening member 431. Thus, the head member 410' and the tail member 420 of the top tube 400 are fixedly coupled to both ends of the top tube 400 using an adhesive means and a pull-out member 430.

Therefore, as illustrated in Figure 15 and "Figure 15-1" of the accompanying drawings, the threaded portion 414' formed on the head member 410' of the top tube 400 is connected to the H1-coupling member 110 of the head tube 100. ') is coupled to the screw portion 112' having male threads configured in a turnbuckle manner, and the tail member 420 of the top tube 400 is connected to the S1-coupling member 210 of the seat tube 200 as described above. It is connected with a turnbuckle method.

Preferably, as illustrated in Figure 9 and "Figure 9-1" of the accompanying drawings, the head member 410 of the top tube 400 has a threaded portion 414' having a female thread inside the cylindrical body 411'. And with the coupler 415' formed, a coupler 412' and a step part 413' are formed on the outer periphery of the cylindrical body 411', and are fixed to the inner surface of the distal end of the top tube 400 by adhesive means. In addition, the step portion 413' of the head member 410' is tightly coupled to the cross section of the top tube 400.

Therefore, as illustrated in FIGS. 15 and 15-1, the head member 410' of the top tube 400 is coupled to the H1-coupling member 110' of the head tube 100 in a turnbuckle manner. In addition, the tail member 420 of the top tube 400 is coupled to the S1-coupling member 210 of the seat tube 200 in a turnbuckle manner.

At this time, the H1-coupling member 110' of the head butt, as illustrated in Figure 14 of the attached drawing, has a head 111' having an arc-shaped curved body and a male screw as described above. It consists of a screw body 112' on which a screw portion 112a' is formed, and a fastening member 114' is fastened to the screw portion 112a' having a male thread of the screw body 112', and the screw portion having the male screw. To (112a'), a threaded portion 414' having a female thread of the top tube 400 is coupled in a turnbuckle manner, as illustrated in FIGS. 15 and 15-1 of the accompanying drawings.

Hereinafter, a preferred embodiment according to the structure and operation of the bottom tube 500 of the present invention will be described with reference to Figure 8 of the attached drawings.

Here, the configuration of packaging the outer peripheral surface of the bottom tube 500 with a stainless steel plate is omitted since it is the same means and method as the top tube described above.

As illustrated in Figure 8 of the accompanying drawings, there is a tip of the bottom tube 500; A head member 510 composed of a screw fastening member 514 formed with a turnbuckle-type threaded portion 515 is fixedly coupled to the cross-section to protect the cross-section, and is fixedly coupled to the tail of the bottom tube 500; The cross-section is protected by being in close contact with the cross-section, and the tail member 420, which includes a turnbuckle-type threaded portion 524, is fixedly coupled, and the head member 510 and tail member 520 of the bottom tube 500 are drawn out members. (530) are mutually fixedly coupled.

Therefore, the outer peripheral surface of the bottom tube 500 is protected by a stainless steel plate, and as illustrated in Figure 16 of the attached drawing, the head member 510 of the bottom tube 500 is the H2-coupling member 120 of the head tube 100. It is coupled to the turnbuckle method, and the tail member 520 of the bottom tube 500 is coupled to the B1-coupling member 310 of the bottom bracket shell 300 in a turnbuckle method.

Since the bottom tube 500 has the same structure and function as the top tube 400, detailed description will be omitted.

Hereinafter, a preferred embodiment according to the structure and operation of the chainstay 600 of the present invention will be described with reference to Figures 10 and 12 of the attached drawings.

As illustrated in Figure 12 of the attached drawing, the chainstay 600 is; A chain head member 610 coupled to the bottom bracket shell of the bicycle frame, including a pair of chain frames 620 and 620' facing each other, and a wheel fixing member 660 to which the rear wheel of the bicycle is coupled, ( 660'),

Chain frames (620) and (620') are; As illustrated in "FIG. 12-4", the outer peripheral surfaces of the chain frames 620 and 620' are composed of high-strength plastic pipes or bamboo that has been surface-treated and processed into a pipe shape, including a drying step; A thin stainless steel plate (620a) is rotatably attached and packaged to protect the outer peripheral surface.

At each of the front ends of the chain frames 620 and 620'; In addition to protecting the cross-section, the head members 630 and 630' coupled to the chain head member 610 are fixedly coupled to the tail portions of the chain frames 620 and 620'; In addition to protecting the cross-section, the tail members 640 and 640', which are coupled to the wheel fixing members 660 and 660', are respectively coupled to each other, and the head members 630 of the frame frames 620 and 620' are respectively connected. ), (630') and the tail members (640), (640') are coupled to each other by drawing members (650), (650').

At this time, the pair of chain frames 620 and 620' are; As illustrated in Figure 10 of the attached drawing, the chain head member 610 is coupled to the chain head member 610 at a predetermined interval D1, and the tail portion of each chain frame 620 and 620' is spaced at a predetermined interval B1. ) is expanded to

Here, the predetermined gap D1 formed at the front end of the chain frame 620 and 620' is an interval at which the rear wheel of the bicycle rotates smoothly, and is also formed at the tail end of the chain frame 620 and 620'. The predetermined spacing (B1) is a typical spacing at which the rear wheel of a bicycle is mounted.

Preferably, as illustrated in Figures 12 and 12-3 of the accompanying drawings, the head member 630 of the chain frame 620 has a fastening hole 634 on the inside of the cylindrical body 631 having a cylindrical shape. And with the coupler 635 formed, a coupler 632 and a step part 633 are formed on the outer peripheral surface of the cylindrical body 631, and are fixedly coupled to the inner surface of the front end of the chain frame 620 by adhesive means. The step portion 633 of the cylindrical body 631 is tightly coupled to the cross section of the chain frame 620.

In addition, a chain head member 610 is disposed on each of the head members 630 and 630', and is fixedly coupled to the fixing members 613 and 613'.

The tail member 640 of the chain frame 620 is; As illustrated in "FIG. 12-5", a fastening hole 644 is formed on the inside of the cylindrical body 641 having a cylindrical shape, and on the outer peripheral surface of the cylindrical body 641; A coupling portion 642 and a step portion 643 are formed and fixedly coupled to the inner surface of the tail portion of the chain frame 620 using adhesive means.

At this time, the coupler 635 of the head member 630 of the chain frame 620 and the fastening hole 644 of the tail member 640 are fixedly coupled to each other by the pull-out member 650.

And in the tail member 640 of the chain frame 620; A combination body 645 with a fastener 646 is formed and fixedly coupled to the wheel fixing member 660 supporting the rear wheel of the bicycle.

The chain head member 610 of the chainstay 600 is; As illustrated in "FIGS. 12-1" and "FIGS. 12-2", it is composed of a rectangular plate shape with coupling holes 611, 612, and 612' formed in the center and at both edges, respectively, on both sides. The edge is inclined at a predetermined angle (A) from the outside of the central coupling hole 611.

Therefore, in the coupling ports 612 and 612' on both sides of the chain head member 610; The head members 630 and 630' of the chain frames 620 and 620' are spaced apart at predetermined intervals and are fixedly coupled to form a pair of chain frames 620 and 620'. The tail portion has the characteristic of expanding at a predetermined interval (B1).

The wheel fixing member 660 illustrated in Figures 12 and “Figure 12-6” of the accompanying drawings is; The rear wheel of the bicycle is fixedly coupled, and a chain assembly 621 coupled to the chain frame 620 of the chainstay 600 is formed, and a coupler 662 is formed, and the seat stay 700 of the bicycle is formed. ), the sheet assembly 663 is formed, and the coupler 664 is formed.

Here, a brake mount of a bicycle may be coupled to the wheel fixing member 660 by conventional means and methods, and a derailleur of a gear shifting means that performs gear shifting of the rear wheel of the bicycle may be coupled to the wheel fixing member 660 by conventional means and methods. It is a self-evident fact that it exists.

The chainstay 600 configured in this way is placed on the B3-coupling member 330 of the bottom bracket shell 300 and is fixedly coupled by the fixing member 614, as illustrated in FIG. 10 of the attached drawing.

At this time, the B3-coupling member 330 of the bottom bracket shell 300 is a curved coupling member 340 and a flat member 331 provided on the bottom bracket? 300, as illustrated in the accompanying drawing "Figure 10-1". ) The chain head member 610 of the chainstay 600 is disposed to protrude to the outside as described above and is fixedly coupled to the bottom bracket shell 300 by the fixing member 614.

Hereinafter, a preferred embodiment according to the configuration and operation of the seat stay 700 of the present invention will be described with reference to FIGS. 11 and 13 of the accompanying drawings.

The seat stay 700 is; As illustrated in Figure 11 of the attached drawing, it is composed of a pair of seat frames 720 and 720' facing each other and a seat head member 710 coupled to the seat tube 200, the seat frame ( 720),(720') is; As illustrated in Figure 13 of the attached drawing, the outer peripheral surface of the seat frame 720 is composed of a high-strength plastic pipe or bamboo that has been surface-treated and processed into a pipe shape, including a drying step; It is attached to a thin stainless steel plate (720a) and packaged to protect the outer peripheral surface.

At each of the front ends of the seat frames 720 and 720'; In addition to protecting the cross-section, head members 730 and 730' coupled to the seat head member 710 are coupled to the tail portions of the seat frames 720 and 720'; A pair of seat frames 720 and 720', with the cross-section protected and the tail members 740 and 740' coupled to the wheel fixing member formed on the chainstay respectively fixedly coupled to each other; In addition to being coupled to the seat head member 710 at a predetermined distance (D2), the tail portions of each seat frame 720 and (720') have the characteristic of extending at a predetermined distance (B2).

At this time, as illustrated in FIG. 13 of the attached drawing, the head member 730 and the tail member 740 of the seat frame 720 are coupled to each other by a pull-out member 750.

Here, the predetermined gap D2 formed at the front end of the seat frame 720 and 720' is an interval at which the rear wheel of the bicycle rotates smoothly, and is also formed at the tail member of the seat frame 720 and 720'. The predetermined spacing (B2) is a typical spacing at which the rear wheel of a bicycle is mounted.

Preferably, as illustrated in Figure 13 of the accompanying drawings, the head member 730 of the seat frame 720 is; A fastening hole 733 and a coupler 734 are formed inside the head member 730 having a cylindrical shape, and on the outer peripheral surface of the head member 730; A coupling portion 731 and a step portion 732 are formed and fixedly coupled to the inner surface of the front end of the seat frame 720 by adhesive means, and the step portion 732 of the head member 730 is attached to the inner surface of the front end of the seat frame 720. It is tightly coupled to the cross section.

And the tail member 740 of the seat frame 720 is; A fastening hole 745 is formed on the inside of the tail member 740 having a cylindrical shape, a coupling portion 741 and a step portion 742 are formed on the outer peripheral surface, and an adhesive means is formed on the inner surface of the tail portion of the seat frame 720. are fixedly connected.

At this time, the coupling hole 734 of the head member 730 of the seat frame 720 and the fastening hole 745 of the tail member 740 include; The pull-out members 750 are fixedly coupled to each other, so that the head member 730 and the tail member 740 of the seat frame 720 are more firmly coupled to both ends of the seat frame 720 by the pull-out member 750.

Preferably, the tail member 740 of the seat frame 720 includes; A combination body 743 with several fasteners 744 is formed to securely couple the wheel fixing member 660 supporting the rear wheel of the bicycle.

Also, preferably, as illustrated in FIG. 11 of the accompanying drawing, the seat head member 710 of the seat stay 700 is composed of a plate shape, and the head members of the seat frames 720 and 720' are formed on both edges. The tail portions of the seat frames 720 and 720', which are formed as a pair by being fixedly coupled while being spaced apart at a predetermined interval D2, are extended at a predetermined interval B2. .

At this time, the seat head member 710 of the seat stay 700 is disposed on the S2-coupling member 220 fixedly coupled to the seat tube 200 and fixedly coupled to the fixing member 713.

In detail, as illustrated in Figure 11 and "Figure 11-1" of the accompanying drawings, the S2-coupling member 220 coupled to the seat tube 200 has a female thread on the inside of the screw body 222 as described above. A threaded portion 223 is formed so that the seat head member 710 is fixedly coupled to the fixing member 713.

Hereinafter, an embodiment in which the head tube 100 and the seat tube 200 of the present invention are fixedly coupled by the top tube 400 will be described with reference to Figure 15 of the attached drawings.

As illustrated in Figure 15 of the attached drawing, a screw fastening member 414 is formed on the head member 410 of the top tube 400, and a turnbuckle-type screw portion 415 is formed, and the top tube 400 In the tail member 420; A threaded portion 424 opposite to the threaded portion 415 of the head member 410 is formed.

And in the screw body 112 formed in the H1-coupling member 110 of the head tube 100; A screw body 212 is formed with a screw part 113 in the same direction as the screw part 415 of the head member 410 of the top tube 400, and is also formed in the S1-coupling member 210 of the seat tube 200. In; A threaded portion 213 is formed in the same direction as the threaded portion 424 of the tail member 420 of the top tube 400.

Therefore, the head member 410 of the top tube 400 is coupled to the threaded portion 113 of the H1-coupling member 110 of the head tube 100, and the tail member 420 of the top tube 400 is connected to the seat tube ( 200) S1 - each has the characteristic of being coupled to the threaded portion 213 of the coupling member 210 in a turnbuckle manner.

Preferably, the head member 410 of the top tube 400 includes; A screw fastening member 414 having a male threaded portion 415 is formed, and the tail member 420 of the top tube 400 includes; A threaded portion 424 having a female thread opposite to the threaded portion 415 of the head member 410 is formed.

And, in the screw body 112 formed in the H1-coupling member 110 of the head tube 100; A threaded portion 113 having a female thread in the same direction as the threaded portion 415 of the head member 410 is formed, and the screw body 212 formed in the S1-coupling member 210 of the seat tube 200 includes; A threaded portion 213 having a male thread in the same direction as the threaded portion 424 of the tail member 420 of the top tube 400 is formed.

Therefore, the threaded portion 415 having a male thread of the head member 410 of the top tube 400 is coupled to the threaded portion 113 having a female thread of the H1-coupling member 110 of the head tube 100, and the top tube 400 The threaded portion 424 having a female thread of the tail member 420 is coupled to the threaded portion 213 having a male thread of the S1-coupling member 210 of the seat tube 200 in a turnbuckle manner.

Also, preferably, as illustrated in Figure 15 of the attached drawing, the thread pitch of the threaded portion 424 formed in the tail member 420 of the top tube 400 is the threaded portion formed in the head member 410 of the top tube 400. (415) It is formed larger than the screw pitch, and when the top tube 400 is rotated, the tail member 420 of the top tube 400 preferentially adheres to the S1-coupling member 210 of the seat tube 200. In addition to being fixedly coupled, the head member 410 of the top tube 400 is; While fastened to the H1-coupling member 110, it is fixedly coupled to the H1-coupling member 110 of the head tube 100 by the locking fastening member 115 provided on the H1-coupling member 110.

Hereinafter, an embodiment in which the head tube 100 and the bottom bracket shell 300 of the present invention are fixedly coupled by the bottom tube 500 will be described with reference to Figure 16 of the attached drawings.

As illustrated in Figure 16 of the attached drawing, a screw fastening member 514 is formed on the head member 510 of the bottom tube 500, and a threaded portion 515 is formed, and the tail member ( 520) in; A threaded portion 524 opposite to the threaded portion 515 of the head member 510 is formed.

And in the screw body 122 formed in the H2-coupling member 120 of the head tube 100; A threaded portion 123 is formed in the same direction as the threaded portion 515 of the head member 510 of the bottom tube 500, and is also formed in the B1-coupling member 310 of the bottom bracket shell 200; A threaded portion 312 in the same direction as the threaded portion 524 of the tail member 520 of the bottom tube 500 is formed.

Therefore, the head member 510 of the bottom tube 500 is; It is coupled to the threaded portion 123 of the H2-coupling member 120 of the head tube 100, and the tail member 520 of the bottom tube 500 is; The bottom bracket shell 200 B1 has the characteristic of being coupled to the threaded portion 312 of the coupling member 310 in a turnbuckle manner.

Preferably, as illustrated in Figure 16 of the attached drawing, the head member 510 of the bottom tube 500 is provided with a screw fastening member 514 having a male threaded portion 515, and the tail of the bottom tube 500 is provided. In absence 520; A threaded portion 524 having a female thread opposite to the threaded portion 515 of the head member 510 is formed.

And, in the screw body 122 formed in the H2-coupling member 120 of the head tube 100; A threaded portion 123 having a female thread in the same direction as the threaded portion 515 of the head member 510 of the bottom tube 500 is formed, and is also formed on the B1-coupling member 310 of the bottom bracket shell 200. In the body 310; A threaded portion 312 having a male thread in the same direction as the threaded portion 524 of the tail member 520 of the bottom tube 500 is formed.

Therefore, the threaded portion 515 having a male thread of the head member 510 of the bottom tube 500 is coupled to the threaded portion 123 having a female thread of the H2-coupling member 120 of the head tube 100, and the bottom tube 500 The threaded portion 524 having a female thread of the tail member 520 is coupled to the threaded portion 312 having a male thread of the B1-coupling member 310 of the bottom bracket shell 200 in a turnbuckle manner.

Also, preferably, as illustrated in Figure 16 of the attached drawing, the thread pitch of the threaded portion 524 formed in the tail member 520 of the bottom tube 500 is formed in the head member 510 of the bottom tube 500. When the bottom tube 500 is rotated, the tail member 520 of the bottom tube 500 has priority over the B1-coupling member 310 of the bottom bracket shell 300. are fixedly connected.

At this time, the head member 510 of the bottom tube 500 is; While fastened to the H2-coupling member 120 of the head tube 100, it is connected to the H2-coupling member 120 of the head tube 100 by the locking fastening member 128 provided on the H2-coupling member 120. It has the characteristic of being fixedly coupled.

Hereinafter, an embodiment of protecting the bicycle frame by packaging on the outer peripheral surface of the bicycle frame of the present invention will be described.

The attached drawing, Figure 17, is a cross-sectional view illustrating an embodiment in which a stainless steel plate is packed on the outer peripheral surface of the top tube 400 in Figure 8. The top tube 400 of the bicycle frame is; Composed of surface-treated pipe-shaped bamboo, the outer peripheral surface of the top tube 400; When the stainless steel plate (400a) is attached and packaged,

On the outer peripheral surface of the bamboo (400') constituting the top tube (400); With the adhesive applied, the stainless steel plates (400a) and (400b) are attached so that both ends (400a) and (400b) are in contact with each other and rotated while surrounding the outer peripheral surface of the bamboo (400'), and the stainless steel plates (400a) are also rotated. In the joint gap formed at both end joints 400c; It has the feature that the joint portions 400c at both ends of the stainless steel plates 400a and 400b are finished by being polished while being coated with a stainless steel coating agent 400d.

Here, the stainless steel plate is; The thickness of the stainless steel plate is preferably 0.02 to 0.1 mm or less so that it can rotate smoothly on the cylindrical pipe and make the frame lighter.

Hereinafter, another embodiment of protecting the bicycle frame by packaging on the outer peripheral surface of the bicycle frame of the present invention will be described.

The attached drawing, Figure 18, is a cross-sectional view illustrating another embodiment in which a stainless steel plate is packed on the outer peripheral surface of the top tube in Figure 8. Preferably, the size of the stainless steel plate (400a) wrapped around the outer circumference of the bamboo (400') is configured to be larger than the size of the outer circumference of the bamboo by a predetermined length, and adhesive is applied to one side (inner side) to form a seal on the bamboo (400'). When attached rotatably to the outer circumferential surface,

First, the distal end of the stainless steel plate 400b is attached to the outer peripheral surface of one end of the attached stainless steel plate 400a', and the overlapping end of the stainless steel plate 400b' is coated with a stainless steel coating agent 400c, followed by polishing. It has the characteristic of finishing the end joint of the stainless steel plate 400b'.

In the above, one embodiment and another embodiment according to the present invention have been described, and hereinafter, a preferred embodiment according to the structure and operation of the present invention will be briefly described again.

In one embodiment of the present invention, as illustrated in FIG. 1, the bottom bracket shell 300 of the bicycle is provided with a curved coupling means 340, and includes a B1-coupling member 310 with male threads, and B2. -A coupling member 320 and a B3-coupling member 330 are formed, and the seat tube 200 is installed upward on the B2-coupling member 320.

And the head tube 100 is disposed in front of the seat tube 200, and the head tube 100 includes an H1-coupling member 110 and an H2-coupling member 120, and the seat tube 200 The upper side consists of an S1-coupling member 210 and an S2-coupling member 220.

In this way, the head tube 100 and the seat tube 200 are fixed in a turnbuckle manner by the head member 410 and the tail member 420 provided on the top tube 400, as illustrated in FIG. 15 of the attached drawing. are combined.

Preferably, the screw portion 113 having a female thread of the screw body 112 formed in the H1-coupling member 110 of the head tube 100 is provided with a screw fastening member formed in the head member 410 of the top tube 400. The threaded portion 415 having a male thread of (414) is fastened in a turnbuckle manner, and the threaded portion 424 having a female thread formed on the tail member 420 of the top tube 400 is S1-coupled of the seat tube 200. It is coupled to the screw portion 213 having male screws of the screw body 212 of the member 210 in a turnbuckle manner.

In this way, when the top tube 400 is rotated, the tail member 420 of the top tube 400 is preferentially closely adhered to and fixedly coupled to the S1-coupling member 210 of the seat tube 200, and the top tube 400 )'s head member 410 is; While fastened to the H1-coupling member 110, it is fixedly coupled to the H1-coupling member 110 of the head tube 100 by the locking fastening member 115 provided on the H1-coupling member 110.

And the head tube 100 and the bottom bracket shell 300 are fixed in a turnbuckle manner by the head member 510 and the tail member 520 provided on the bottom tube 500, as illustrated in Figure 16 of the attached drawing. are combined.

Preferably, the screw portion 123 having a female thread of the screw body 122 formed in the H2-coupling member 120 of the head tube 100 is provided with a screw fastening member formed in the head member 510 of the bottom tube 500. The threaded portion 515 having a male thread of (514) is fastened in a turnbuckle manner, and the threaded portion 524 having a female thread formed on the tail member 520 of the bottom tube 500 is connected to B1- of the bottom bracket shell 300. It is coupled to the screw portion 312 having male screws included in the coupling member 310 in a turnbuckle manner.

In this way, when the bottom tube 500 is rotated, the tail member 520 of the bottom tube 500 is preferentially closely adhered to and fixedly coupled to the B1-coupling member 310 of the bottom bracket shell 300, and the bottom tube ( The head member 510 of 500) is; While fastened to the H2-coupling member 120, it is fixedly coupled to the H2-coupling member 120 of the head tube 100 by the locking fastening member 128 provided on the H2-coupling member 120.

Therefore, the head tube 100 and the seat tube 200 of the present invention are connected by the top tube 400 in a turnbuckle manner, and the head tube 100 and the bottom bracket shell 300 are connected by the bottom tube 500. Separate professional manufacturing equipment and welding means for professional manufacturing are omitted, and it is manufactured in a prefabricated form that is easy to manufacture, so it can be disassembled and assembled when necessary, so bicycle frame reconstruction and manufacturability are excellent.

In addition, the outer peripheral surface of the high-strength plastic and bamboo frame is wrapped with a thin stainless steel plate with a beautiful surface and high hardness, which greatly reduces defects such as surface damage and surface scratches of the frame. Above all, the light weight of the high-strength plastic and bamboo frame In addition to increasing rigidity, external shock absorption is greatly improved.

In the bicycle frame constructed in this way, as illustrated in Figure 1 of the attached drawing, the chainstay 600 provided with the wheel fixing member 660 is prefabrically fixed to the B3-coupling member 330 formed in the bottom bracket shell 300. In addition, the seat tube 200 is configured with the above-described S2-coupling member 220, so that the seat tube 200 and the wheel fixing member 660 of the chainstay 600 are mutually assembled by the seat stay 700. are fixedly connected.

As described in the above description, the bicycle frame of the present invention omits welding parts that require high levels of manual skill, and also omits integrated press-molded products such as carbon frames, and includes aluminum, carbon, titanium, steel, The bicycle frame is constructed using a simple assembly method using various materials such as bamboo and high-strength plastic, making it simple and easy to manufacture the bicycle frame.

As described above, one embodiment of the present invention using various preferred means has been described in detail, but the scope of the present invention is not limited to the specific embodiment and should be interpreted in accordance with the appended claims.

In addition, it goes without saying that those skilled in the art can make various modifications without departing from the scope and spirit of the present invention.

100: Head tube 110: H1-coupling member
114,126,214,226,431: Fastening member 115, 128: Locking fastening member
120: H2-coupling member 127': adapter member
130: upper bearing member 140: lower bearing member
200: Seat tube 210: S1-coupling member
220: S2-coupling member 230: upper coupling member
240: Lower coupling member 300: Bottom bracket shell
310: B1-joint member 311,321,331: flat member
320: B2-Coupling member 330: B3-Coupling member
340: Curved surface coupling member 350,350': Bearing member
400: Top tube 413: Screw coupling member
410,410',510,510',630,630',730,730': Head member
420,520,640,640',740,740': Tail member
430,530,650,650',750: Drawout member
500: Bottom tube 600: Chainstay
610: Chain head member 613,613',614,713: Fixing member
620,620': Chain frame 660,660': Wheel fixing member
700: Seat stay 710: Seat head part

Claims (23)

On the outer peripheral surface of high-strength plastic pipe or surface-treated pipe-shaped bamboo; With adhesive applied, the stainless steel plate is rotatably attached to wrap around the outer circumference of the bamboo to form a bicycle frame,
At both ends of the head tube; The cross-section is protected, the bearing member on which the bearing is mounted is combined, and the head tube is composed of an H1-coupling member and an H2-coupling member consisting of a head and a threaded portion having a T-bolt shape, and also a bottom bracket shell. At both ends; The cross-section is protected and the bearing member on which the bearing is mounted is coupled to the outer peripheral surface of the bottom bracket cell; The inner and outer surfaces are composed of curved bodies in the shape of an arc, and the flat members are combined to form a curved coupling member provided with a B1-coupling member, a B2-coupling member, and a B3-coupling member;
On the upper side of the seat tube; S1-coupling members and S2-coupling members, including a clamp member whose upper surface is protected with the first coupler and the second coupler, are formed on the lower side; A lower coupling member is constructed and installed on the B2-coupling member of the bottom bracket shell, and the B3-coupling member of the bottom bracket shell includes: The chain head member is formed and the head member of the chain frame is combined, and the chainstays that extend at the tail of the chain frame at predetermined intervals are assembled in a prefabricated manner, and the wheel fixing member and seat tube formed in the tail of the chainstay are A seat stay is formed between the S2-coupling members;
At both ends of the top tube; A head member and a tail member are configured to protect the cross-section and have a screw fastening part having a threaded part, and are prefabrically coupled to the H1-coupling member of the head tube and the S1-coupling member of the seat tube, and at both ends of the bottom tube; It consists of a head member and a tail member that protects the cross-section and consists of a screw fastening part with a threaded part, and is prefabricated to the H2-coupling member of the head tube and the B1-coupling member of the bottom bracket shell, protecting the surface of the bicycle frame. Bicycle prefabricated frame with features. According to clause 1,
The head tube is; On the outer peripheral surface of the head tube, it is made of high-strength plastic pipe or bamboo that has been surface treated and processed into a pipe shape, including a drying step; Thin stainless steel plates are rotatably attached and packaged to protect the outer peripheral surface;
At the top of the head tube; The upper bearing member is in close contact with the upper surface to protect the cross-section, and the lower bearing member is in close contact with the lower surface to protect the cross-section, and the lower bearing member on which the bearing is mounted is fixedly coupled to each other;
On the head tube; A first coupler and a second coupler are formed in the axial direction, so that the H1-couple member is disposed to protrude from the inside of the head tube to the outside through the first coupler, and is fixedly coupled with a fastening member, and the H1-couple member is fixedly coupled to the head tube. The H2-binding member is; A prefabricated bicycle frame that is disposed to protrude from the inside of the head tube to the outside through a second coupler and is fixedly coupled with a fastening member. According to clause 1,
The bottom bracket shell is made of high-strength plastic pipe or bamboo that has been surface-treated and processed into a pipe shape, including a drying step. On the outer peripheral surface of the bottom bracket shell; Thin stainless steel plates are rotatably attached and packaged to protect the outer peripheral surface;
At both ends of the bottom bracket shell; The bearing members are in close contact with the cross-sectional portion to protect the cross-sectional portion, and each bearing member provided with the bearing of the bicycle crankshaft is fixedly coupled to each other;
In the bottom bracket shell; A second coupler and a third coupler are formed including the first coupler in the circumferential direction, and the curved coupler includes: A first fastening hole, a second fastening hole, and a third fastening hole are formed in the circumferential direction, respectively, on the outer peripheral surface of the curved coupling member; providing a second planar member and a third planar member, including the first planar member;
On the inside of the bottom bracket shell, the B1-coupling member is fastened to the first fastening hole of the curved coupling member and is coupled to the first flat member and protrudes to the outside of the curved coupling member, and the B2-coupling member is also connected to the curved coupling member. is fastened to the second fastening hole of the second flat member and protrudes to the outside of the curved coupling member, and the B3-coupling member is fastened to the third fastening hole of the curved coupling member and is attached to the third flat member. A bicycle prefabricated frame that is combined and has the characteristic of protruding outside of the curved joining member. delete According to clause 1,
The top tube is; On the outer peripheral surface of the top tube, it is made of high-strength plastic pipe or bamboo that has been surface-treated and processed into a pipe shape, including a drying step; Thin stainless steel plates are rotatably attached and packaged to protect the outer peripheral surface;
At the tip of the top tube; A head member formed of a screw-fastening member having a turnbuckle-type threaded portion, which is in close contact with the cross-section to protect the cross-section, is fixedly coupled;
Also, at the tail of the top tube; The cross-section is protected by being closely attached to the cross-section, the tail member formed with a turnbuckle-type thread is fixedly coupled, and the head and tail members of the top tube are mutually fixed by a pull-out member, protecting the outer peripheral surface of the top tube. Bicycle prefabricated frame with features. According to clause 1,
The chainstays are; It is composed of a pair of chain frames facing each other, a chain head member coupled to the bottom bracket shell, and a wheel fixing member to which the rear wheel of a bicycle is coupled. The chain frame includes: On the outer peripheral surface of the chain frame, it is made of high-strength plastic pipe or bamboo that has been surface treated and processed into a pipe shape, including a drying step; Thin stainless steel plates are rotatably attached and packaged to protect the outer peripheral surface;
At each front end of the chain frame; A head member that protects the cross-section and is coupled to the chain head member is provided at the tail portion of the chain frame; In addition to protecting the cross-section, the tail member coupled to the wheel fixing member is coupled to each other, the head member and tail member of the body frame are coupled to each other by a pull-out member, and a pair of chain frames; A prefabricated bicycle frame characterized in that it is coupled to the chain head member at a predetermined interval and the tail portion of each chain frame is extended at a predetermined interval. According to clause 1,
The seatstays are; Consisting of a pair of seat frames facing each other and a seat head member coupled to a seat tube, the seat frame includes; The outer peripheral surface of the seat frame is made of high-strength plastic pipe or bamboo that has been surface-treated and processed into a pipe shape, including a drying step; Thin stainless steel plates are rotatably attached and packaged to protect the outer peripheral surface;
At each front end of the seat frame; A head member that protects the cross-section and is coupled to the seat head member is located at the tail portion of the seat frame; A pair of seat frames in which the cross-section is protected and the tail members coupled to the wheel fixing members formed in the chainstay are respectively fixedly coupled; A prefabricated bicycle frame characterized in that it is coupled to the seat head member at a predetermined interval, the tail portion of each seat frame is extended at a predetermined interval, and the head member and tail member of the seat frame are coupled to each other by pull-out members. According to claim 1 or 2,
The H1-coupling member of the head tube is; On the outer peripheral surface of the screw body of the H1-coupling member is composed of a T-bolt shape having a head made of an arc-shaped curved body and a screw body on which a screw portion is formed; A screw portion having a male thread is formed on the inside of the screw body; The head of the H1-coupling member is characterized by a threaded portion having a female thread; It is coupled to the inner surface of the head tube, and the screw body of the H1-coupling member is; A prefabricated bicycle frame that protrudes outward through the first coupler of the head tube, is fastened with a fastening member, and is fixedly coupled to the head tube, and the top tube is coupled to the screw portion having a female thread of the screw body. According to claim 1 or 2,
The H2-coupling member of the head tube is; It is composed of a T-bolt shape having a head composed of an arc-shaped curved body and a screw body on which a screw portion is formed, and on the outer peripheral surface of the screw body; A screw portion having a male thread is formed at the distal end of the screw body; The head of the H2-coupling member is characterized by forming a threaded portion with a downwardly inclined inclined surface and a female thread inclined at a predetermined angle; It is coupled to the inner surface of the head tube, and the screw body of the H2-coupling member is; A bicycle prefabricated frame that protrudes outward through the second coupling hole of the head tube, is fastened with a fastening member, and is fixedly coupled to the head tube, and the bottom tube is coupled to the screw portion having a female thread of the screw body. delete According to clause 1,
The S1-coupling member of the seat tube is; The head of the S1-coupling member is connected to the inner surface of the seat tube, and is composed of a head with a T-bolt shape and an arc-shaped curved body on the inner and outer surfaces, and a screw body with a screw portion with male threads. The screw body of the member protrudes outward through the first coupling hole of the seat tube and is fastened with a fastening member to be fixedly coupled to the seat tube;
The S2-coupling member of the seat tube is; The outer peripheral surface of the screw body of the S2-coupling member is composed of a T-bolt shape with a head formed of an arc-shaped curved body on the inner and outer surfaces and a screw body formed with a screw part; A screw portion having a male thread is formed at the end of the screw body; The head of the S2-coupling member is coupled to the inner surface of the seat tube, and the screw body of the S2-coupling member is comprised of a downwardly sloping inclined surface and a screw portion having a female thread sloping at a predetermined angle. A prefabricated bicycle frame that protrudes outward through the second coupler of the seat tube and is fastened with a fastening member to be fixedly coupled to the seat tube. According to clause 5,
The head member of the top tube is; A screw coupling member having a male threaded portion is fixedly coupled to the inside of the cylindrical body, and a coupling portion and a step portion are formed on the outer circumference of the cylindrical body to be fixedly coupled to the inner surface of the distal end of the top tube by adhesive means. The stepped portion is tightly coupled to the cross section of the top tube;
The tail member of the top tube is; A threaded portion having a female thread in the opposite direction to the threaded portion of the head member is formed on the inside of the cylindrical body, and a coupling portion and a step portion are formed on the outer circumference of the cylindrical body and are fixedly coupled to the inner surface of the tail portion of the top tube by adhesive means. The stepped portion of the tail member is tightly coupled to the cross section of the top tube;
The coupling hole formed in the tail member of the top tube and the fastening hole formed in the screw coupling member of the head member are coupled to each other by a pull-out member, and the head member and tail member of the top tube are attached to the top tube by adhesive means and a pull-out member. A prefabricated bicycle frame that has the characteristic of being fixedly coupled. According to clause 6,
The head member of the chain frame is; A fastening hole and a coupling hole are formed on the inside of the cylindrical body, and on the outer peripheral surface of the cylindrical body; A coupling portion and a step portion are configured to be fixedly coupled to the inner surface of the front end of the chain frame by adhesive means, and the step portion of the cylindrical body is tightly coupled to the cross section of the chain frame, and each head member of the chain frame has the chain head member. is arranged and fixedly coupled with a fixing member;
The tail member of the chain frame is; A fastening hole is formed on the inside of the cylindrical body, a coupling part and a step are formed on the outer peripheral surface of the cylindrical body, and are fixedly coupled to the inner surface of the tail part of the chain frame by adhesive means, so that the coupling hole of the chain frame head member and the fastening hole of the tail member are formed. In; A prefabricated bicycle frame in which the pull-out members are fixedly coupled to each other, and the tail member of the chain frame is formed with a fastener, so that the wheel fixing member supporting the rear wheel of the bicycle is fixedly coupled. delete delete delete According to clause 1,
The H2-joining member of the head tube is; It is composed of a screw body in which a head and a screw part having a T-bolt shape are formed,
The head of the H2-binding member; It is composed of a plate shape with an arc-shaped curved body in the circumferential direction, and on the outer peripheral surface of the H2-coupling member screw body; A screw portion having a male thread is formed at the distal end of the screw body; A prefabricated bicycle frame having the characteristic of forming a threaded portion having a downward sloping inclined surface and a predetermined angle and a downward sloping female thread. According to clause 17,
In the screw portion having a female thread of the H2-coupling member screw body; An adapter member composed of a first threaded portion having a first male thread having a different diameter and a second threaded portion having a second male threaded portion is fixedly coupled to the screw body of the H2-coupling member; A prefabricated bicycle frame characterized by a second screw portion inclined backward at a predetermined angle. According to clause 1,
A threaded portion is formed on the head member of the top tube, and a threaded portion is formed on the tail member of the top tube; A threaded portion is formed in an opposite direction to the threaded portion of the head member of the top tube;
The screw body comprised in the H1-coupling member of the head tube includes; The screw body is formed with a threaded part in the same direction as the screwed part of the head member of the top tube and is formed in the S1-coupling member of the seat tube; The feature is that the threaded part of the top tube is formed in the same direction as the threaded part of the tail member, so that the head member of the top tube is fixed to the screwed part of the H1-coupling member, and the tail member of the top tube is fixed to the screwed part of the S1-coupling member in a turnbuckle manner. A prefabricated bicycle frame with a combined feature. delete According to clause 1,
The screw pitch of the threaded part formed in the tail member of the top tube is larger than the screw pitch of the threaded part formed in the head member of the top tube. When the top tube is rotated, the tail member of the top tube is connected to the seat tube S1-coupling member. In addition, the head member of the top tube is preferentially adhered and fixedly coupled to; being fastened to the H1-coupling member and fixedly coupled to the H1-coupling member of the head tube by a locking fastening member provided on the H1-coupling member;
The screw pitch of the threaded part formed in the tail member of the bottom tube is formed to be larger than the screw pitch of the threaded part formed in the head member of the bottom tube. When the bottom tube is rotated, the tail member of the bottom tube is moved to B1- of the bottom bracket shell. It is preferentially fixedly coupled to the coupling member, and the head member of the bottom tube is; A bicycle prefabricated frame that is fastened to the H2-coupling member of the head tube and is fixedly coupled to the H2-coupling member of the head tube by a locking fastening member provided on the H2-coupling member. delete delete

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