KR101942231B1 - Bicycle assemble frame - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a bicycle frame, and more particularly to a bicycle assembly frame in which a top tube and a bottom tube constituting a bicycle frame are assembled in a prefabricated manner.
A bicycle frame comprising: a bicycle head tube; A first tensile member to which the top tube is engaged, and a second tensile member to which the bottom tube is coupled; A third tension member to which a tail of the top tube is engaged; A fourth tensile member to which the tail portion of the bottom tube is engaged, and a fourth tensile member to which the tail portion of the bottom tube is coupled; A drawer for winding up the drawing rope is mounted with the drawing rope disposed thereon; The pulling ropes are interconnected to the first and third tension members so that the head tube and the sheet tube are fixed to the top tube by the pulling force of the pull rope And wherein the draw rope is interconnected to the second tension member and the fourth tension member with the bottom tube disposed between the head tube and the bottom bracket shell such that the tensile force of the draw rope causes the head tube and the bottom bracket shell Is fixedly coupled to the bottom tube.

Description

Bicycle assembly frame {Bicycle assemble frame}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a bicycle frame, and more particularly, to a bicycle frame structure in which a top tube and a bottom tube constituting a bicycle frame are assembled and assembled.

The present invention relates to a bicycle frame, and more particularly to a bicycle prefabricated frame in which a top tube and a bottom tube of a bicycle are coupled and fixed by a pulling force of a drawing rope.

Generally, the bicycle frame 1000 includes a head tube 100 disposed in front of a seat tube 200 disposed above the bottom bracket shell 300 as illustrated in FIG. 1, The head tube 100 is fixedly coupled to the seat tube 200 by the top tube 400 and the bottom tube 500 and the seat stay 200a and the chain stay 300a are fixed to the rear side of the seat tube 200 In the bicycle frame,

The tip portion of the top tube 400 and the bottom tube 500 fixed to the head tube 100 is formed as a curved curved surface portion so as to be in close contact with the outer circumferential surface of the head tube 100, And is fixedly coupled to the head tube 100 through a welding means as one body.

When the top tube 400 and the bottom tube 500 are fixedly coupled to the seat tube 200 and the bottom bracket shell 300 by the welding means including the head tube 100, And the inherent heat treatment characteristics of the frame tube due to the welding heat are reduced, resulting in the stability problem of the bicycle frame in which the bike frame is broken due to the decrease in the strength of the frame joint.

The stability problem of such a bicycle frame; To improve the lighter frame of the bicycle frame, the tube formed at both ends of the bicycle top tube and the bottom tube is formed to be somewhat thick, while the butted tube at the center of the tube is formed to be thinner, However, such butted tubes are more complicated in the production process, and thus the production cost of bicycle frames is high. Above all, because the buttite tubes are thin, repetitive external shock absorption is insufficient, There is a problem that the ride comfort of the bicycle is deteriorated due to a decrease in the durability of the bicycle frame and a decrease in the external shock absorption rate.

Recently, bicycle carbon frames, which are improved in lighter weight and improved shock absorption, have been widely used as a means of improving stability of such bicycle frames and lighter bicycle frames. However, bicycle carbon frames have been used as an integral type using carbon materials The manufacturing process is complicated and the manufacturing cost is high, and there is a problem that it is difficult to repair the bicycle frame when the bicycle frame is damaged.

In addition, most of the bike frame joints are composed of a fixed type integral body, and the production work of integrating bicycle frame components into one body requires a professional factory and expertise of bicycle frame, It is difficult to separate and assemble the bicycle frame.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-

The bicycle frame is formed of a thin, thin, and easy-to-assemble and detachable bicycle frame. The bicycle frame includes a top tube and a bottom tube fixed to each other by a tension force of a pull rope. And it is an object of the present invention to provide a bicycle prefabricated frame in which compressed air is filled inside a top tube and a bottom tube of a bicycle frame to increase the strength of the bicycle frame and improve the external shock absorption rate.

A head tube of the bicycle frame; A first tensile member and a second tensile member to which the top tube and the bottom tube are coupled, and the seat tube; A third tension member to which a tail of the top tube is engaged; Means for configuring a fourth tension member to which the tail of the bottom tube is engaged; A means for disposing a draw-out rope inside each of the top tube and the bottom tube, and means for mounting an extractor for winding the draw-out rope; The pulling ropes are interconnected to the first and third tension members with the top tubes disposed in the head tube and the seat tube such that the head tube and the seat tube are fixedly coupled to the top tube by the pulling force of the pull rope Means; The second tension member and the fourth tension member are connected to each other by a draw-out line with the bottom tube disposed in the head tube and the bottom bracket shell so that the head tube and the bottom bracket shell are fixed to the bottom tube with pull- Thereby providing a means for coupling.

The head tube comprising: Wherein the first tension member and the second tension member are configured to face the third tension member of the seat tube and the second tension member is configured to face the bottom bracket shell, A coupling member connected to the first tension member and the second tension member so as to face downwardly with the fourth tension member of the first tension member and a means for connecting the pull rope to the tension unit, .

Wherein the top tube and the bottom tube are formed with an angular recess in the curved curved surface portion of the top tube and the bottom tube around the outer circumferential surface of the head tube in which the first and second tensile members and the second tension member are formed, It is possible to provide a means for tightly fixing.

Wherein the third tensile member is configured to face the first tensile member, the fourth tensile member is configured to face the first tensile member, and the fourth tensile member is configured to face the first tensile member, The pulling member is configured to face upwardly with the second tensioning member, the pulling rope being connected to each of the third and fourth tensioning members, and means for connecting the pulling rope to the pulling portion, Can be provided.

At both ends of the top tube; A curved surface portion that is in close contact with an outer peripheral surface of the head tube and the seat tube; Wherein the head tube and the bottom bracket shell are formed as curved surfaces that are in close contact with the outer circumferential surface of the head tube and the bottom bracket shell, And a coupling member formed to penetrate the coupling hole at an inner center thereof, so that the top tube and the bottom tube are fixedly coupled to each other by a tensile force of the drawing rope.

A locking clamp hole is formed in each of the bodies of the tension member; At both end portions of the top tube and the bottom tube, And a locking member is coupled to the coupling hole and the locking clamp hole. The distal end of the top tube and the bottom tube are fixedly coupled to the head tube, and the tail portion of the top tube is fixed The seat tube may be fixedly coupled and the bottom bracket shell may be fixedly coupled to the tail of the bottom tube.

Wherein the engaging members of the engaging members, which are formed inside both ends of the top tube and the bottom tube, Wherein the coupling member of the tension member is tightly coupled to seal the inside of the top tube and the bottom tube, respectively, and the drawer mounted on each of the top tube and the bottom tube; The top tube and the bottom tube are configured to have a thinner thickness by a means for increasing the strength of the top tube and the bottom tube due to the elasticity of the compressed air, Can be provided.

The tension member comprising: A pulling body formed of a tensile body coupled to the outer circumferential surface of the cylindrical tube in an axial direction so as to penetrate through the fitting hole of the coupling member so as to be closely contacted and a tensile portion protruding in the axial direction of the coupling body; The locking clamp hole is formed so as to penetrate through the flat portion of the tension portion and the flat portion having a size smaller than the diameter of the tension portion is formed on both sides of the outer circumferential surface of the tension portion, And the pulling portion and the pulling rope are pierced into the engaging portion of the engaging member.

An engaging portion of the engaging member; Wherein the coupling member of the tension member comprises: And the inner diameter of the end portion of the tension member combination is formed to be larger than the inner diameter of the coupling hole of the coupling member while being formed with the same taper inclination which is in close contact with each other, Can be provided.

Wherein the engaging member comprises: Means for forming a curved tube ring protruding axially outward at one end of the outer circumferential surface of the engaging member so as to be in contact with the outer circumferential surface of the tube having the cylindrical shape of the seat tube and the bottom bracket shell including the head tube; And the end of the curved tube ring is formed to have a large diameter at both ends of each of the top tube and the bottom tube so that the coupling member is tightly fixed to the inside of both ends of the top tube and the bottom tube can do.

At least one fixing hole for fixing the ejector is formed on an outer circumferential surface of each of the top tube and the bottom tube; The withdrawal device comprising: A ratchet gear including a ratchet shaft on which a drawing rope is wound and a key shaft on which a ratchet key is assembled are respectively mounted and a cover ring to which the ratchet shaft is pivoted to the lower side of the outer circumferential surface of the drawer is fixed And a fixing member is coupled to the inside of the cover while being screwed and protruded to the outside of the ejector, and a key cover for opening the key shaft is coupled to the upper side of the ejector with a screw connection. And means for mounting the ejector in a fixed manner to the top tube and the bottom tube.

The withdrawal device comprising: Wherein the ratchet gear and the ratchet key are combined and mounted in a pair; A wrench connection hole is formed at a lower end of the ratchet shaft and a wrench connecting portion is formed at an upper end of the key shaft to provide a withdrawal rope adjusting means of the withdrawal device.

The withdrawal device comprising: Wherein a flow path communicating with the outer circumferential surface of the ratchet shaft is formed in the wrench connection hole formed at the lower end of the ratchet shaft while a spring loaded spring is mounted and an injection flow path and a valf flow path are formed inside the fixing member, Means for forming an air valve in which a valve surface is formed and a valve body is disposed; In addition, since the oil ring is mounted on the outer circumferential surface of the extractor, the inside of the top tube or the bottom tube is sealed to provide means for filling the compressed air.

And a fifth tension member coupled to a tail of the bottom tube toward the lower front side of the seat tube such that the withdrawal rope is connected to the second tension member and the fifth tension member so that the head tube and the seat tube And means for being fixedly coupled to the bottom tube.

The top tube and the bottom tube may be hermetically sealed, and the top tube and the bottom tube may each have an air valve unit to provide a means for filling compressed air.

As illustrated in detail in the above description, the bicycle prefabricated frame of the present invention is characterized in that the top tube is disposed between the head tube and the seat tube of the bicycle frame, and the bottom tube is disposed between the head tube and the bottom bracket shell, Since the welding method is omitted at the both ends of the top tube and the bottom tube, it is possible to use the top tube and the bottom tube excellent in the heat treatment quality without thermal deformation due to the welding heat since the system is fixedly coupled with the tensile force of the drawing rope by the drawer have.

Accordingly, the top tube and the bottom tube can be manufactured to be thinner as a whole, and the top tube and the bottom tube can be easily fabricated as a lighter frame without omitting the conventional butt tube method. The top tube of the bicycle-assembled frame of the bicycle frame and the engaging member formed inside the bottom tube are dispersed to the engaging member together with the tip portion of the top tube and the bottom tube to transmit the external impact transmitted from the head tube, .

Since the top tube and the bottom tube are filled with compressed air while being sealed, the strength of the top tube and the bottom tube is increased due to the elasticity of the compressed air, so that the thicknesses of the top tube and the bottom tube are made thinner, It is possible to make it lighter and it is also excellent in absorption of external shock due to the elastic force of the compressed air, so that the riding comfort of the bicycle riding is improved.

In addition, the bicycle assembly-type frame of the present invention adjusts the pulling-up state of the pulling rope to easily separate and adjust the bicycle frame, thereby improving the transportation process of the bicycle, and moreover, Bicycle frame Since there is little need of professional factory and technical expertise, bicycle frame is very easy to manufacture.

Figure 1 illustrates one embodiment of the bicycle prefabricated frame of the present invention.
FIG. 2 is an exemplary illustration of an important component and important components of a bicycle prefabricated frame of FIG. 1 in plan view; FIG.
FIG. 3 is a perspective view illustrating an assembling and disassembling state of the essential components of the bicycle assembly type frame in FIG. 2; FIG.
FIG. 4 is a cross-sectional view illustrating a cut-away portion of the top tube of FIG. 3 vertically and horizontally. FIG.
FIG. 5 is a cross-sectional view of a bottom tube of FIG.
6 is a view showing a rope finishing material and a rope connecting member for finishing the end portion of a drawing rope in Figs. 4 to 5; Fig.
FIG. 7 is a perspective view illustrating a tension member of the present invention in FIG. 3; FIG.
FIG. 8 is a cross-sectional view of the tension member of FIG.
FIG. 9 is a longitudinal sectional view illustrating another embodiment of the coupling member in FIGS. 4 to 5; FIG.
10 is a longitudinal sectional view illustrating a coupling relationship between a tension member and a coupling member of the present invention.
FIG. 11 is a perspective view illustrating the card dispenser of the present invention. FIG.
FIG. 12 is a cross-sectional view illustrating an important part of the deliverer in FIG. 11;
FIG. 13 is a vertical cross-sectional view illustrating a ratchet gear and a ratchet key including a ratchet shaft of the deliverer in FIG. 11; FIG.
FIG. 14 is a longitudinal sectional view illustrating an embodiment in which the drawing rope is wound around the ratchet shaft of the drawer and the compressed air is injected in FIG. 11; FIG.
FIG. 15 is a cross-sectional view illustrating a state in which a top tube is disposed on a head tube and a sheet tube in FIG. 2, and is fixedly coupled and separated by a drawing rope;
FIG. 16 is a cross-sectional view illustrating a state in which the bottom tube is disposed in the head tube and the bottom bracket shell of FIG. 2, and is fixedly engaged and separated by a pull rope;
FIG. 17 is a perspective view illustrating another embodiment in which the bottom tube of the present invention is assembled in FIG. 2; FIG.
Figure 18 illustrates another embodiment of the air valve means for filling compressed air in the top and bottom tubes during the second pass.
19 is a cross-sectional view illustrating an important part of the air valve means on line AA '

The bicycle frame 100 having the bicycle assembling frame function of the present invention has a head tube 100 in front of the seat tube 200 which is installed above the bottom bracket shell 300 of the bicycle as illustrated in FIG. The seat tube 200 and the head tube 100 are fixedly coupled to each other by the top tube 400 and the bottom tube 500 and the seat stay 200a is fixed to the rear side of the seat tube 200, The chain stays 300a are fixedly coupled to the rear of the bottom bracket shell 300 to form the bicycle assembly frame 1000,

As shown in FIGS. 2 to 3, the head tube 100 includes a first tension member 710 to which the tip of the top tube 400 is coupled, A second tension member 720 to which the tip end of the bottom tube is engaged, and the seat tube 200 is provided with: A third tension member 730 to which the tail of the top tube 400 is coupled, and the bottom bracket shell 300; And a fourth tension member 740 to which the tail of the bottom tube 500 is coupled.

A first extractor 600 for extracting the drawing rope 800 is installed inside the top tube 400 of the bicycle frame with a drawing rope 800 disposed inside the top tube 400. Inside the bottom tube 500, The second drawer 600 'for winding up the drawing rope 800' is mounted with the drawing rope 800 'disposed thereon.

The pulling ropes 800 are connected to the first and third tension members 710 and 730 with the top tube 400 disposed between the head tube 100 and the seat tube 200 And the head tube 100 and the seat tube 200 are fixedly coupled to the top tube 400 by the pulling force of the drawing rope 800 and between the head tube 100 and the bottom bracket shell 300 The pulling ropes 800 'are connected to the second tension member 720 and the fourth tension member 740 while the bottom tube 500 is disposed in the head tube 500' The bottom bracket shell 100 and the bottom bracket shell 300 are fixedly coupled to the bottom tube 500.

15, the top tube 400 is disposed between the head tube 100 and the seat tube 200 in close contact with each other, and the first tension member (not shown) When the draw rope 800 is wound around the ratchet shaft 610 of the first drawer 600 while the draw rope 800 is connected to the third tension member 730 and the third tension member 730, The head tube 100 and the seat tube 200 are fixed firmly to both ends of the top tube 400 by the tensile force of the drawing rope 800, The top tube 400 and the seat tube 200 are firmly fixed by the tensile force of the drawing rope 800 of the top tube 400.

At this time, the inside of the top tube 400 is sealed, the compressed air 10 is filled through the air valve formed in the first extractor 600, and the strength of the top tube 400 is further increased. The air valve configured in the ejector 600 will be described later in detail.

The bottom tube 500 is disposed between the head tube 100 and the bottom bracket shell 300 in close contact with each other as illustrated in FIG. 16-1 of FIG. 16, When the drawer rope 800 'is connected to the member 720 and the fourth tension member 740 and the ratchet shaft 610' of the second drawer 600 'is wound, the draw rope 800' The head tube 100 and the bottom bracket shell 300 are firmly fixed to both ends of the bottom tube 500 by the tensile force of the drawing rope 800 ' The bottom bracket shell 300 and the head tube 100 are fixed firmly by the tensile force of the pull rope 800 'of the bottom tube 500. [

At this time, compressed air 10 is filled through the air valve formed in the second extractor 600 'while the inside of the bottom view 500 is sealed, and the strength of the bottom tube 500 is further increased . The air foot means will be described later.

The materials of the seat tube 200 and the bottom bracket shell 300 including the head tube 100 used in the present invention are as follows. The top tube 400 and the bottom tube 500 may be made of a material selected from the group consisting of titanium, stainless steel, carbon, carbon steel, stainless steel, High-strength synthetic resins, and the like.

Hereinafter, the seat tube 200 and the bottom bracket shell 300 including the head tube 100 will be described in more detail.

3, the head tube 100 has a first tensile member 710 and a second tensile member 720 fixed from the rear (right side) to the lower side of the outer circumferential surface of the head tube 100 The first tension member 710 is disposed to face the third tension member 730 of the seat tube 200 and the second tension member 720 is disposed to face the third tension member 730 of the seat tube 200, And is disposed to face downwardly with the fourth tension member 740.

A third tension member 730 is fixed to the upper surface of the outer circumferential surface of the seat tube 200 and a fourth tension member 740 is fixed to the outer circumferential surface of the bottom bracket shell 300, The member 730 is disposed to face the first tension member 710 and the fourth tension member 740 is disposed obliquely to face the second tension member 720 upward.

Preferably, the tension members 710, 720, 730, 740 are fixed to the outer surface of the seat tube 200 and the bottom bracket shell 300, including the head tube 100 720 and 730 and 740 are fixedly secured to the seat tube 200 and the bottom tube 720 by welding means or the like and preferably the tension members 710, The bracket 300 may be integrally formed by a casting method or a compression molding method.

A tension rope 800 is attached to each of the tension members 710, 720, 730, and 740 formed in the seat tube 200 and the bottom bracket shell 300 including the head tube 100. [ 723, 733, 743 and 740, 724, 734, 744 to which the first and second shafts 800, 800 'are connected, The drawing ropes 800 and 800 'are connected to the sections 714, 724, 734 and 744.

Further, preferably, on the outer circumferential surface of the head tube 100, as shown in Fig. 3-1 of the attached drawing, a circumferential surface of the first tensile member 710 of the head tube 100; The shape of the curved curved surface portion 101 of the tip end of the top tube 400 in contact with the top end of the top tube 400 is formed as an engraved groove, The shape of the curved curved surface portion 102 of the tip end portion of the bottom tube 500 in which the tip of the bottom tube 500 is in close contact is formed as an engraved groove.

The tip portions of the top tube 400 and the bottom tube 500 are fixedly coupled to the curved portions 101 and 102 formed by the engaging recesses of the head tube 100.

Hereinafter, the top tube 400 will be described in more detail.

FIG. 4 is a cross-sectional view illustrating an important portion of the top tube during the third section cut vertically and horizontally, wherein both ends 410 and 420 of the top tube 400 are connected to each other; The head tube 100 and the seat tube 200 are formed as curved surfaces 411 and 421 which are in close contact with the outer circumferential surface of the head tube 100 and the seat tube 200 as shown in FIG. 4-1 of the accompanying drawings, The joints 713 and 733 and the tensioning portions 714 and 713 formed in the tension members 710 and 730 illustrated in FIG. 3 are formed on the inner sides of the opposite end portions 410 and 420 of the base member 400, And coupling members 430 and 440 formed with coupling holes 431 and 441 through which the insertion tube 734 penetrates are formed on the inner side of the top tube 100; The first extractor 600 for winding up the drawing rope 800 is fixedly installed while the drawing rope 800 is arranged to constitute the top tube 400 of the present invention.

Preferably, on the outer peripheral surface of the top tube 400; A fixing member 640 having a fixing hole 401 and configured to protrude from the outer circumferential surface of the ejector 600 to the outside of the fixing hole 401 and the key cover ring 623 are projected in close contact with each other, An oil ring 660 is mounted on the outer circumferential surface of the ejector 600 so that the inside of the top tube 400 is sealed.

Preferably, on the outer circumferential surface formed outside the engaging members 430 and 440 constituting the both ends 410 and 420 of the top tube 400; Binders 412 and 422 are formed on both sides of the outer circumferential surface.

The pull ropes 800 wound around the pull-out device 600 are pulled out of both end portions 410 and 420 of the top tube 400 so that the pull ropes 800 800 are fixedly coupled with the rope finishing material 810 which binds each other; The rope connecting member 820 which receives and binds the rope finishing material 810 is bound.

The rope finishing material 810 and the rope connecting member 820 of the drawing rope 800 will be described below.

Hereinafter, the top tube 400 fixed to the drawing rope 600 with the head tube 100 and the seat tube 200 disposed therein will be described in detail.

15, the distal end 410 of the top tube 400 is formed as a curved curved surface portion 411 that closely surrounds the outer circumferential surface of the head tube 100, and the top tube 400 A first engaging member 430 having a coupling hole 431 is formed inside the tip end portion 410 of the head tube 100 as shown in FIG. And the first engaging member 430 is provided with: The coupling body 713 and the tension portion 714 of the first tension member 710 are arranged to pass through.

A tail portion 420 of the top tube 400 is formed as a curved curved surface portion 421 that closely surrounds the outer circumferential surface of the seat tube 200 and a coupling hole 441 is formed inside the tail portion 420 The coupling member 733 and the tensioning portion 734 of the third tension member 730 are disposed in the seat tube 200 so as to penetrate the third coupling member 440 while the formed third coupling member 440 is formed, Respectively.

The pull rope 800 is then routed inside the top tube 400 to the tension portion 714 of the first tension member 710 and the tension portion 734 of the third tension member 730, The head tube 100 and the seat tube 200 are connected to both ends of the top tube 400 by the tensile force of the drawing rope 800 by the first extractor 600 while being interconnected by the rope connecting member 820 The assembled frame of the bicycle which is firmly and fixedly engaged is constituted.

At this time, the first tension member 710 and the third tension member 540 are inserted into the coupling holes 431 and 441 of the first coupling member 430 and the third coupling member 440, The joints 713 and 733 of the tension member 730 are tightly coupled to each other so that the inside of the top tube 400 is sealed and compressed air 10 The strength of the top tube 400 is further increased.

The head tube 100 and the seat tube 200 are strongly urged to the both ends of the top tube 400 by the tensile force of the drawing rope 800 while welding means are omitted to the coupling portion of the top tube 400. [ A method of close contact; The thickness of the top tube 400 can be made thinner because the inside of the top tube 400 is sealed and the strength of the compressed air is increased by the elastic force of the compressed air. .

The pressure of the compressed air charged in the top tube 400 is charged to a level of 1.5 to 5 bar of the tire pressure of the bicycle tire and the thickness of the top tube 400 is adjusted to a suitable pressure 5 bar).

Hereinafter, the bottom tube will be described with reference to FIGS. 5 to 16.

5 is a cross-sectional view illustrating the main part of the bottom tube vertically and horizontally in the third state. Both ends 510 and 520 of the bottom tube 500 are connected to the head tube 100 and the bottom bracket shell 500, (511) and (521) that are in close contact with the outer circumferential surface of the bottom tube (500) and inside the opposite end portions (510) and (520) of the bottom tube (500). Joints 723 and 743 formed in the tension members 720 and 740 and joints 531 and 541 through which the tension members 724 and 744 penetrate are illustrated in FIG. And the second take-out rope 800 'is disposed on the inner side of the bottom tube 500. The take-out ropes 800' The second extractor 600 'is fixedly mounted to constitute the bottom tube 500 of the bicycle prefabricated frame of the present invention.

A fixing hole 501 is formed on the outer circumferential surface of the bottom tube 500 so that the fixing member 640 'and the key cover ring 623' of the second ejector 600 ' The ejector 600 'is fixedly mounted on the inner side of the bottom tube 500 and the inner ring of the bottom tube 500 is closed by mounting an oil ring 660' on the outer circumferential surface of the ejector 600 ' .

Preferably, on the outer circumferential surface formed on the outer sides of the engaging members 530 and 540 constituting the both ends 510 and 520 of the bottom tube 500, Bonding members 512 and 522 are formed on both sides of the outer circumferential surface.

The pull rope 800 'wound on the pull-out device 600' is pulled out of both ends 510 and 520 of the bottom tube 500 at the end of the pull-out rope 800 '. The lobe finishing material 810 ', which binds the drawing ropes 800', is fixedly coupled, and the drawing rope 800 ' The rope connecting member 820 ', which receives and binds the end finishing material 810', is bound.

Hereinafter, the bottom tube 500 fixed to the head tube 100 and the bottom bracket shell 300 and fixed by the drawing rope 800 'will be described in detail.

16, the distal end 510 of the bottom tube 500 is formed as a curved curved surface portion 511 that closely surrounds the outer circumferential surface of the head tube 100, A second engaging member 530 having an engaging hole 531 is formed inside the tip 510 of the head tube 100 as shown in Figure 16-1 of Figure 16 The coupling member 723 and the tension member 724 of the second tension member 720 are disposed in the second coupling member 530 so as to penetrate through the second coupling member 530.

A tail portion 520 of the bottom tube 500 is formed as a curved curved surface portion 521 that closely surrounds the outer peripheral surface of the bottom bracket shell 300 and a coupling hole 541 is formed inside the tail portion 520, The coupling member 743 of the fourth tensile member 740 and the tension member 744 of the fourth coupling member 540 are disposed in the bottom bracket shell 300 while the fourth coupling member 540 in which the fourth tension member 740 is formed. Are disposed so as to pass through.

Thus, within the bottom tube 500, the withdrawal rope 800 'is attached to the tensioning portion 724 of the second tensioning member 720 and the tensioning portion 744 of the fourth tensioning member 740, The head tube 100 and the bottom bracket shell 300 are connected to each other by the tensile force of the drawing rope 800 'by the second drawer 600' while being interconnected by the rope connecting member 820 ' The assembled frame of the bicycle which is tightly coupled to both ends of the tube 500 and fixedly coupled thereto is formed.

At this time, the engaging members 531 and 541 of the engaging members 530 and 540 coupled to each other inside the bottom tube 500 are engaged with the engaging members 723 and 724 of the tension members 720 and 740, The inner side of the bottom tube 500 is sealed and the compressed air 10 is filled through the air valve formed in the second discharger 600 ' The strength is increased more greatly.

Therefore, both ends of the bottom tube 500 are connected to the head tube 100 and the bottom bracket shell 300 by the tensile force of the drawing rope 800 ', while welding means are omitted to the coupling portion of the bottom tube 500. [ A strongly intimate manner; The thickness of the bottom tube 500 can be made thinner because the inner side of the bottom tube 500 is sealed and the strength of the compressed air is increased by the elastic force of the compressed air. .

The pressure of the compressed air charged in the bottom tube 500 is charged to a level of 1.5 to 5 bar of the tire pressure of the bicycle tire and the thickness of the bottom tube 500 is adjusted to a suitable pressure 5 bar).

It is a matter of course that the tightly packed tube is increased in strength in proportion to the elastic force of the compressed air when the compressed air is filled in the closed tube, the tire, the ball, the compression vessel, The rigidity of the top tube and the bottom tube is increased while the absorption of external impact due to external impact is greatly improved.

Here, the air valve means for injecting the compressed air will be described later in detail with reference to the following drawer.

Hereinafter, the tension member will be described in detail.

Hereinafter, the tension member 710 including the head tube 100 and configured on the outer surface of the seat tube 200 and the bottom bracket shell 300 will be described. The tension member 710 is formed in the same shape, The first tension member 710 to be attached to the head tube 100 will be described in the description of the present invention and the description of the other tension members will be omitted.

The tension member 710 includes the head tube 100 and the seat tube 200 and the bottom bracket shell 300, as illustrated in detail in FIGS. 7-8. A tension body 711 having a " C " -shaped curved portion fixedly coupled to the outer circumferential surface in the axial direction is formed, and the tension member 711 is fixed to the coupling member 711 A coupling body 713 penetrating through the coupling holes 431, 441, 531 and 541 of the coupling body 713 and the coupling holes 431, 430, 440, 530, A tensile member 714 protruding in a direction perpendicular to the longitudinal direction of the tension member 711, And a flat portion 715 having a size smaller than the diameter of the tension portion 714 is formed on both sides of the outer circumferential surface of the tension portion 714 while the locking clamp holes 712 and 712 ' And an outlet 716 is formed in the flat portion 715 of the tension portion 714 so as to pass through.

Therefore, in the state where the drawing rope is connected to the drawing port 716 of the tension portion 714 through the flat surface portion 715 of the drawing portion 714, as illustrated in FIGS. 4 to 5, The pulling portion 714 and the pulling rope 800 are engaged with the coupling portions 431, 441, 531, and 541 of the coupling members 430, 440, 530, And the coupling member 713 of the tension member 700 is engaged with the coupling holes 431, 441, 531, and 530 of the coupling members 430, 440, 530, So that both end portions of the top tube and the bottom tube are sealed from the outside.

The diameter of the tension portion 714 of the tension member 700 may be greater than the diameter of the coupling members 431, 441, and 531 of the coupling members 430, 440, 530, The pulling rope can be disposed by forming the pullout opening 716 in the pulling portion 714 while being formed to be smaller than the inner diameter of the pulling member 541 and the pulling rope can be disposed on the pulling portion 713 of the pulling member 700, It is obvious that the drawing rope can be disposed inside the top tube and the bottom tube while the drawing rope is connected to the fastening ring of the tension member 7000. As a matter of fact, to be.

Hereinafter, the coupling members 430, 440, 530, and 540 will be described in more detail.

As shown in FIG. 9, the coupling members 430, 440, 530, and 540 may include a tapered coupling member 430 having an inner diameter d1 of the coupling hole from the outer side to the inner side of the coupling member 430a, The coupling member 713 of the tension member 700 is formed with the same tapered slope as that of the tapered coupling member 431a, as shown in FIG. 8, The tapered end portion 713b of the coupling body 713 is formed of a tapered coupling body 713a formed to be larger than an inner diameter d1 of an end portion of the tapered coupling portion 431a. As illustrated in FIG. 10, The tapered coupling member 713a of the member 700 is in close contact with the tapered coupling member 431a to seal the inside of the top tube and the bottom tube to prevent leakage of the compressed fluid, In the circumferential direction of the head tube or sheet tube Thereby preventing the twisted state.

Preferably, as shown in FIGS. 15 to 16, the top end of the top tube 400 and the bottom end of the bottom tester 500, 420, 510, 520, The thicknesses of the top tubes 400, 540, 530 and 540 are determined by the pressing force of the tension members 710 and 720 due to an external impact applied from the head tube 100, (440), (530), and (440) while being configured to be thin enough to withstand the pressure of the compressed air (10) filled in the bottom tube (500) 540 are preferably imparted with elasticity in response to compressed air and an external impact so that the external impact transmitted to the inside of the top tube 400 and the bottom tube 500 is dispersed and absorbed.

Hereinafter, the rope finishing material and the rope connecting member of the drawing rope will be described.

The rope finishing material 810 and 810 'of the drawing rope 800 and the rope connecting members 820 and 820' are formed such that the ends of the drawing rope 800 are rope- The rope connecting member 820 is fixed to the body 810 of the rope connecting member 820 while the receiving portion 821 in which the rope finishing material 810 is received is formed inside the cylindrical body, An insertion port 822 through which the withdrawal rope 800 is inserted is formed at both ends so that the withdrawal rope 800 is prevented from falling out by depressing the insertion port 822 after the rope finishing material 810 is inserted .

Here, the rope finishing material 810 of the drawing rope 800 is a well-known technique that is widely used as a finishing material for a bicycle brake cable and will not be described in detail, and the drawing rope may be a piano wire, Fishing line, synthetic fiber rope, and the like.

Hereinafter, the ejector 600 mounted on the inside of the top tube and the bottom button will be described. Since the ejector 600 is constructed in the same shape and fixed to the inside of the tube of the same type, A description will be given of the first extractor 600 mounted on the bottom tube 500 and a description of the second extractor 600 'mounted on the bottom tube 500 will be omitted.

11 is a perspective view illustrating the card dispenser 600 of the present invention, and FIG. 12 is a cross-sectional view of the card dispenser 600 illustrated in FIG. 11 in the circumferential direction, (601); A fixing member 640 for inserting and fixing the ejector in the top tube 400 and a key cover 623 of the ejector 600 and a fixing member 640 of the ejector 600 and a key cover 623 As shown in FIG. 4, the ejector 600 is fixedly mounted on the inside of the top tube 400 by protruding outside the fixing hole 401 formed on the outer circumferential surface of the top tube 400.

The take-off device 600 includes a ratchet gear 610 including a ratchet shaft 610 wound around a take-off rope inside a body 600 of a body 600 having a cylindrical shape as illustrated in FIGS. 11 to 12, And a cover shaft 620 for locking the ratchet shaft 610 to the lower side of the outer circumferential surface of the body of the ejector body 601 are fixedly coupled A fixing member 640 is screwed on the inside of the cover ring 630 and protrudes outside the body 601 of the body 600.

In the body of the dispenser 601, A key cover 623 for opening the key shaft 620 is coupled to the upper side of the body of the ejector body 601 by screw engagement so that the fixing member 640 and the key cover ring 623 are attached to 4, the ejector 600 is fixedly mounted on the inside of the top tube 400 as described above. As illustrated in FIG. 4, the ejector 600 is coupled to the outer circumferential surface of the top tube 400 in a protruding manner.

Here, the ratchet gear 611 and the ratchet key 621 are keyed and assembled to the ratchet shaft 610 and the key shaft 620 as illustrated in FIG. 13, The ratchet key 611 and the ratchet key 621 are disposed on one surface (upper surface) of the space portion 602 formed inside the ejector 600 and are fixed to rotate by the ratchet shaft 610 and the key shaft 620 , And the ratchet key 621 is closely contacted with the ratchet gear 611 by a spring 625.

Described in more detail with respect to the dispenser 600, the dispenser 600 comprises: 12 to 14, a space portion 602 through which the inside of both ends of the ejector 600 pass each other is formed so that the ratchet gear 611 (see FIG. 12) is provided on one surface (upper surface) And the ratchet key 621 are arranged in a pair so that the ratchet shaft 610 is rotated in one direction. At least one winding opening 613 through which the drawing rope is wound is formed and a wrench connecting hole 612 is formed at a lower end of the ratchet shaft 610. Inside the covering ring 630, A wrench is connected to the ratchet shaft 610 through the fastening hole 631 with a fastening hole 631 passing through the wrench connection hole 612 of the ratchet shaft 610 and fastening the fastening member 640 by screwing The ratchet shaft 610 is rotated.

A wrench connection part 622 is formed at an upper end of the key shaft 620 to adjust the key shaft 620 and release the one direction winding of the ratchet shaft 610, The key coverings 623 and 624 are hermetically sealed at both ends of the key shaft 620 to seal the inner space 602 of the ejector 600 from the outside. The key cover ring 623 with the connection hole 622 protrudes outward from the fixing hole 402 of the top tube 400 formed on the outer circumferential surface of the ejector 600 as illustrated in FIG. 14, The key cover ring 623 is opened and the wound state of the ejector 600 is released.

Thus, the cover ring 630 fixedly coupled to the lower side of the ratchet shaft 610 of the extractor and the fixing member 640 fixedly coupled to the cover ring 630; As shown in FIG. 14, the fixing member 640 protrudes outward from the fixing hole 401 formed on the outer circumferential surface of the top tuck 400, so that the ejector 600 includes: The pulling rope 800 is attached to the winding hole 613 of the ratchet shaft 610 while being fixed in the axial direction inside the top tube 400 and the winding hole 613 is formed as shown in FIG. With the pierce placed, huh? When the shaft 610 is rotated in one direction, the pull-out rope 800 wound around the ratchet shaft 610 has a pull-out force equal to the tip portion and the tail portion of the top tube 400, In a state in which the drawing force is not applied, the ejector 600 is fixed to the inside of the top tube.

Hereinafter, the air valve 650 constituting the ejector 600 will be described.

As shown in FIG. 12, the ejector 600 includes a wrench connection hole 612 formed at the lower end of the ratchet shaft 610 of the ejector 600. A flow path 614 communicating with the outer circumferential surface of the ratchet shaft 610 is formed while the elastic spring 651 is disposed. The valve body 641 and the valvus flow path 642 are formed on the upper surface of the fixing member 640 and the valve body 643 is formed on the upper surface of the fixing member 640. The valve body 651 and the elastic spring 652 constituting the air valve are disposed So that the air valve 650 having the check valve function is formed.

Therefore, when the compressed air is injected through the inflow passage 641 of the air valve 650 formed inside the fixing member 640 of the ejector 600 as illustrated in FIGS. 12 to 14, The valve body 651 of the air valve 650 compresses the elastic spring 652 mounted on the wrench connection hole 612 so that the air valve 650 is opened and the connection hole of the ratchet shaft 610 The compressed air is injected into the top tube 400 through the flow path 614 formed in the top tube 400.

An oil ring 660 is mounted on each of the outer circumferential surfaces of both sides of the fixing member 640 and the key cover ring 623 protruding from the outer circumferential surface of the ejector 600 as illustrated in FIGS. 11 to 14 And the inside of the top tube is sealed so that leakage of the compressed air injected into the inside of the top tube is prevented.

710, 721, 731, and 741 of the tension members 710, 720, 730, and 740 as illustrated in one of FIGS. 15 to 16, The locking clamp holes 712, 722 and 732 are formed and the end portions 410, 420 and 510 of the top tube 400 and the bottom tube 500 are formed, Binding portions 412, 422, 512, and 522 penetrating the outer circumferential surfaces of the top tube 400 and the bottom tube 500, respectively, as described above.

Therefore, as illustrated in FIG. 15-1, the head tube 100 including the first tension member 710 and the seat tube 100 including the third tension member 730 The locking clamp holes 712 and 732 of the tension members 710 and 730 and the coupling hole 412 of the top tube 400 are arranged in close contact with the top tube 400, The head tube 100 and the seat tube 420 are fastened to both ends 410 and 420 of the top tube 400 by being coupled with the fixing nut 21 while the locking member 20 is inserted into the through- (200) are fixedly coupled.

As shown in FIG. 16-1, the head tube 100 including the second tension member 720 and the bottom bracket 702 including the fourth tension member 740 may be integrally formed, The locking clamp holes 722 and 742 of the tension members 720 and 740 and the coupling holes 732 and 732 of the bottom tube 500 are inserted into the shell 300 while the bottom tube 500 is closely attached. 512 and 522 are coupled to the fixing nut 21 while the locking member 20 is inserted into the both ends 510 and 520 of the bottom tube 400, And the bottom bracket shell 300 is fixedly coupled.

Thus, the head tube 100 and the seat tube 200 are subjected to tensile force coupling by the pull ropes 800 of the top tube 400; And a locking member 20 penetrating through the locking clamp holes 712 and 732 and the binding holes 412 and 422. The head tube 100 is formed of a double- And the head tube 100 and the bottom bracket shell 300 are connected to each other by tensile force coupling by the pull rope 800 'of the bottom tube 500; And a locking member 20 penetrating through the locking clamp holes 722 and 742 and the coupling holes 512 and 522 so as to be connected to the head tube 100 by the bottom tube 500. [ And the bottom bracket shell 300 are more securely coupled to each other.

Hereinafter, another embodiment of the bottom tube 500 of the present invention will be described.

As shown in FIG. 17, a fifth tension member 750, which is coupled to the tail of the bottom tube 500 in the lower front side of the seat tube 200, constitutes the head tube 100 and the seat tube The pulling ropes 800 'are connected to the second tension member 720 and the fifth tension member 750 while the bottom tube 500 is disposed between the bottom tube 500 and the bottom tube 500, The coupling members 520 and 540 are formed inside the both ends of the head tube 100 and the bottom tube 500 to seal the inside of the bottom tube 500 with the tensile force of the drawing rope 800 ' And the seat tube 200 are fixedly coupled to the bottom tube 500.

Hereinafter, another embodiment of the above-described coupling member will be described.

FIG. 9 is a longitudinal sectional view illustrating an engaging member 430a of another embodiment of the engaging member formed inside the top tube and the bottom tube.

Since the coupling member 430a is formed in the same cylindrical shape as the inside of the top tube and the bottom tube, the coupling member 430a formed at the distal end of the top tube 400 will be described , The coupling member formed on the tail portion of the top tube and the bottom tube is the same as that of the coupling member 430a, and thus description thereof will be omitted.

9, the coupling member 430a is formed inside the tip end portion 410 of the top tube 400. The coupling member 430a is formed at one end portion of the outer circumferential surface of the coupling member 430a, The coupling tube 430 is formed with a curved tube ring 433a protruding from the top tube 400 and is in close contact with the outer circumferential surface of the head tube. At this time, the coupling hole 431a is formed inside the coupling member 430a, On the curved tube ring 433a inside the binding hole 412 formed on the outer peripheral surface; The tip end of the curved tube ring 433a is formed as a curved surface portion 411a which is in close contact with the outer circumferential surface of the head tube while the inner binding hole 432a is formed so as to penetrate.

The diameter D1 of the end portion of the curved tube ring 433a of the coupling member 430a is larger than the inner diameter D of the top tube 400 so that the curved tube ring 433a is coupled to the inside of the top tube 400 in a non- do.

Preferably, the coupling hole 431a formed in the coupling member 430a is formed as a tapered coupling hole 431a as described above.

Therefore, the coupling member 430a constituted by the curved tube ring 433a of the present invention is formed in the top tube 400 in a form of interference fit And the top tube 400 is made thicker by the curved tube ring 433a, so that the inner diameter of the top tube 400 can be made even thinner. Thereby, the weight of the top tube can be made lighter.

Hereinafter, another embodiment of the air valve unit for injecting compressed air into the top tube and the bottom tube of the present invention will be described.

An air valve means 900 for injecting compressed air into the top tube 400 and the bottom tube 500 as illustrated in the accompanying drawing 18 is mounted on the bottom tube 500 including the top tube 400, And the seat tube 200 are configured in a similar cylindrical tube shape. The description of the air foot means 900 of the present invention will be described with respect to the air foot means 900 mounted on the top tube 400 And the air foot means of the present invention mounted on the bottom tube 500 and the seat tube 200 are the same as the technical means mounted on the top tube described above.

The top tube 400 is hereinafter referred to as a tube 400.

18 is a view illustrating another embodiment of the air valve for injecting compressed air into the top tube 400 and the bottom tube 500 of the present invention in the first stage, Sectional view illustrating an important part of the air valve means 900 by cutting the tube and the air valve means 900 on a line.

The top tube 400 and the bottom tube 500 are hermetically sealed and each of the top tube 400 and the bottom tube 500 is provided with air foot means 900, (900 ') is mounted and compressed air is charged,

The air valve unit 900 may include a fixing hole 403 formed at the lower side of the outer circumferential surface of the tube 400 at one side thereof and communicating with the inside of the tube 400, 403 are formed on the inner side of the tube 400; An adapter member 930 for coupling the air valve unit 900 is fixedly disposed.

The adapter member 930 includes: A curved surface portion 932 having a lower side of the outer circumferential surface in close contact with the inner circumferential surface of the top tube 400 in the same shape as the inner diameter of the top tube 400 as illustrated in Fig. 19-1 of the attached drawing 19, (931) and a flat portion (931) of the adapter member (930); And a coupling hole 933 communicating with the fixing hole 403 is formed in a perforated manner.

The air valve body (910) of the air valve unit (900), which is installed so as to protrude from the inside of the tube (400) to the outer circumferential surface outward, comprises: An air valve body 911 which is tightly coupled to the flat surface portion 931 of the adapter member 930 and an air injection portion 912 protruding from the outer circumferential surface of the tube 400, The injection unit 912 includes: The fitting hole 933 of the adapter member 930 and the fixing hole 403 of the tube 400 are closely contacted and protrude to the outer periphery of the outer circumferential surface of the tube 400 and are fixed by the fixing nut 950 do.

When the fixing nut 950 is fastened to the air injection part 912 with the screw fastening part (not shown) being formed on the outer circumferential surface of the air injection part 912, The air valve body 911 is tightly coupled to the flat surface portion 931 of the adapter member 930 and the outer curved surface portion 932 of the adapter member 930 is disposed in close contact with the inner side of the tube 400 The leakage of the compressed air is blocked inside the tube 400.

The adapter member 930 may be made of a variety of sealing materials such as gaskets, synthetic resins, rubber, copper, etc., including aluminum, and the air valve unit 900 may transfer conventional pressure fluid And a conventional Valve material to control the valve.

A receiving portion 914 and a valved surface 913 for receiving the air valve body 920 are formed on the inside of the air valve body 911 of the air emitting means 900 and the inside of the air injection portion 912 An air valve body 920 is mounted on the inside of the air valve body 911 together with a spring 940 while an inflow channel 915 is formed in the air valve body 920, And a spring support 941 is fixedly disposed on the upper side of the receiving portion 914 of the air valve body 911 so that the elastic spring 940 Is always in intimate contact with the air valve body 920.

The curved surface portion 932 of the adapter member 930 is formed in the same shape as the inner surface of the inner side of the tube 400 while the air foot means 900 is mounted from the inside to the outside of the tube 400, The fixing hole 403 formed on the outer circumferential surface of the tube 400 is sealed and shielded from the outside and the fitting hole 933 of the adapter member 930 is in close contact with the air valve body 911 So that leakage of the compressed air from the inside of the tube 400 to the outside is prevented.

Accordingly, when the compressed air is injected through the air injection unit 912 of the air foot unit 900, the air foot body 920 is opened to fill the compressed air, and if necessary, 900, the compressed air charged inside the tube can be discharged to the outside.

Hereinafter, an embodiment of the present invention will be described.

15, the tip 410 of the top tube 400 is disposed on the head tube 100 and the tail 420 of the top tube 400 is coupled to the seat tube 200 A first tension member (710) arranged in the head tube (100) while being disposed; The third tension member 730 formed in the seat tube 200 is connected to the pull rope 800 and is pulled by the pulling rope 800 in accordance with the retraction of the first pull- And the seat tube 200 are tightly coupled to the top tube 400.

The first tension member 710 and the third tension member 730 may be formed of a material having a high tensile strength. The inner side of the top tube 400 is hermetically sealed to the coupling members 430 and 440 formed at both ends of the top tube 400 and the inner side of the top tube 400 is fixed to the inner side of the top tube 400, The inner side of the top tube 400 is filled with the elasticity of the compressed air 10 because the compressed air 10 is injected into the top tube 400 through the above- And the external impact transmitted from the head tube 100 to the top tube 400 is dispersed to the distal end 410 of the top tube 400 and the distal end of the top tube 400, So that the top tube 400 is greatly improved in shock absorption due to an external impact.

The first and second tension members 710 and 730 may be formed of a plurality of fasteners 412 and 422 passing through the outer circumferential surfaces of both ends 410 and 420 of the top tube 400, Locking members 20 are respectively inserted into the locking clamp holes 712 and 732 so as to be inserted through the locking clamp holes 712 and 732 and are fixedly coupled by the fixing nut 21.

Therefore, the locking member 900 is a means for safely preventing the detachment of the bicycle prefabricated frame due to the breakage of the tension rope 800 in an unexpected state or the change of the withdrawal rope 800 due to the abnormality of the withdrawer 600 .

On the other hand, as illustrated in FIG. 16 of the accompanying drawings, the head tube 100 includes: A tip end portion 510 of the bottom tube 500 is disposed, and the bottom bracket shell 300 is provided with: A second tension member (720) configured in the head tube (100) with a tail portion (520) of the bottom tube (500) disposed thereon; The fourth tension member 740 of the bottom bracket shell 300 is connected to the take-off rope 800 'so that the tension force of the take-up rope 800' The head tube 100 and the bottom bracket shell 300 are tightly coupled to the bottom tube 500.

Here, the second tensile member 720 and the fourth tensile member 740 include: The bottom tube 500 is tightly fixed to the coupling members 530 and 540 formed at both ends 510 and 520 of the bottom tube 500 and the inside of the bottom tube 500 is sealed, The compressed air 10 is injected through the air valve formed in the second ejector 600 'and the compressed air is filled inside the bottom tube 500. Thus, the inside of the bottom tube 500 is compressed air The external force transmitted from the hub tube 100 to the bottom tube 500 is transmitted to the distal end portion 410 of the bottom tube 500 and the second engagement member 530 So that the bottom tube 500 is greatly improved in shock absorption due to an external impact.

And the second tension member 720 and the fourth tension member 740 formed on the outer circumferential surfaces of both ends 510 and 520 of the bottom tube 500, Locking members 20 are respectively inserted into the locking clamp holes 722 and 742 so as to penetrate through the locking clamp holes 722 and 742 and are fixedly coupled by the fixing nut 21. The locking member 900 therefore comprises: The tension rope 800 'disposed inside the bottom tube 500 may be cut off in an unexpected state or the removal rope 800' may be damaged due to the abnormality of the ejector 600 ' It is used as a preventive measure.

In the bicycle assembly type frame of the present invention, as shown in FIGS. 15 to 16, a locking member 20, which is coupled to a coupling hole at both ends of the top tube 400 and the bottom tube 500, The pull ropes 800 and 800 ', which are arranged in a tensile state inside the top tube 400 and the bottom tube 500 using the first extractor 600 and the second extractor 600' 3, the seat tube 200 and the bottom bracket shell 300 including the head tube 100 are separated from the top tube 400 and the bottom tube 500, So that the bicycle frame can be foldably used

While the invention has been shown and described with reference to certain embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims.

It will be apparent to those skilled in the art that various modifications may be made without departing from the scope and spirit of the invention.

100: head tube 200: seat tube
200a: Seat stay 300: Bottom bracket shell
300a: chain stay 400: top tube
410, 510: tip portion 420, 520:
430, 430a, 440, 530, 540: coupling member 431, 431a, 441, 531,
500: bottom tube 600, 600 ': dispenser
610: ratchet shaft 611: ratchet gear
612, 622: coupling portion 613: winding portion
620: key shaft 621: ratchet key
623: Key coverings 630: Covering
640: fixing member 650: air valve
710, 720, 720, 740: tensile member 711, 721, 721, 741:
712, 722, 732, 742: locking clamp hole 713, 723, 733, 743:
714, 724, 734, 744: pulling portion 716:
800,800 ': Draw rope 810,810': Rope finish
820,820 ': rope connecting member 900: air valve means
910: Air valve body 920: Air valve body
930: absence of adapter

Claims (18)

A head tube is disposed in front of the seat tube with a seat tube disposed above the bottom bracket shell of the bicycle frame so that the seat tube and the head tube are fixedly coupled to each other by a top tube and a bottom tube, A chain stay and a seat stay are constituted to constitute a bicycle prefabricated frame,
The head tube includes: A first tensile member to which the tip end of the top tube is engaged and a second tensile member to which the tip end of the bottom tube is engaged; A third tension member to which a tail of the top tube is engaged; A fourth tensile member to which a tail portion of the bottom tube is engaged is formed, and each of the top tube and the bottom tube has an inner side; A drawer for winding up the drawing rope is mounted with the drawing rope disposed thereon;
The pulling ropes are interconnected to the first and third tension members so that the head tube and the sheet tube are fixed to the top tube by the pulling force of the pull rope And wherein the draw rope is interconnected to the second tension member and the fourth tension member with the bottom tube disposed between the head tube and the bottom bracket shell such that the tensile force of the draw rope causes the head tube and the bottom bracket shell Is fixedly coupled to the bottom tube. The method according to claim 1,
The head tube comprising: Wherein the first tension member and the second tension member are configured to face the third tension member of the seat tube; The second tensile member being configured to face downwardly with a fourth tensile member of the bottom bracket shell;
Each of said tension members; And a connecting rope to which the drawing rope is connected, and a drawing rope connected to each of the drawing portions while the drawing portion is formed. The method according to claim 1,
A third tensile member on the upper side of the outer surface of the seat tube and a fourth tensile member on the outer peripheral surface of the bottom bracket shell, the third tensile member being configured to face the first tensile member; The fourth tensile member being inclined to face upwardly with the second tensile member;
Each of said tension members; And a connecting rope to which the drawing rope is connected, and a drawing rope connected to each of the drawing portions while the drawing portion is formed. The method according to claim 1,
At both ends of the top tube; A curved surface portion which is in close contact with an outer peripheral surface of the head tube and the seat tube;
At both ends of the bottom tube; The head tube and the bottom bracket shell being formed as a curved surface portion which is in close contact with an outer peripheral surface of the head tube and the bottom bracket shell;
Each of the inside of both ends of the top tube and the bottom tube; And a coupling member formed so as to penetrate the coupling hole at an inner central portion of the top tube and the bottom tube, and a drawer for winding up the drawing rope is fixedly mounted on the inner side of the top tube and the bottom tube, frame. 5. The method according to any one of claims 1 to 4,
A locking clamp hole is formed in the body of the tension member;
At both ends of the top tube and the bottom tube; Wherein a coupling hole is formed through both sides of the outer circumferential surfaces of both ends of each of the top tube and the bottom tube so that the locking members are passed through the coupling holes and the locking clamp holes while the coupling holes and the locking clamp holes are mutually combined The seat tube is fixedly coupled to the tail portion of the top tube while the tip portions of the top tube and the bottom tube are fixedly coupled to the head tube and the bottom bracket shell is fixed to the tail portion of the bottom tube A bicycle prefabricated frame with features that are tightly coupled. 5. The method according to any one of claims 2 to 4,
At the distal end of the top tube; A first coupling member having a curved curved surface portion that closely surrounds the outer circumferential surface of the head tube and having a coupling hole formed inside a distal end portion of the top tube, And a tension portion of the top tube, the tail portion of the top tube comprising: A curved curved surface portion which surrounds the outer circumferential surface of the seat tube; and at the inside of the tail portion of the top tube, And a joint member and a tension member of the third tensile member are arranged to penetrate the joint of the third joint member while the third joint member having the joint is formed;
The head tube and the seat tube are brought into close contact with the top tube by the tensile force of the drawing rope while the drawing ropes are mutually connected to the tension portion of the first tensile member and the tensile portion of the third tensile member, A bicycle prefabricated frame with features that are tightly coupled. 5. The method according to any one of claims 3 to 4,
Wherein the tip end of the bottom tube comprises: A curved curved surface portion which surrounds the outer circumferential surface of the head tube so as to closely contact the curved surface portion of the head tube; Wherein the coupling portion of the second tension member and the tension portion of the second tension member are arranged to penetrate through the coupling member of the second coupling member while the second coupling member having the coupling hole is formed, Wherein the bottom bracket shell is formed as a curved curved surface portion that closely surrounds the outer circumferential surface of the bottom bracket shell and a fourth coupling member having a coupling hole formed inside the tail of the bottom tube, A combination member and a tension member of the tension member are arranged to be penetrated;
The head tube and the bottom bracket shell are brought into close contact with the bottom tube by the tensile force of the drawing rope while the drawing ropes are mutually connected to the tensile portion of the second tensile member and the tensile portion of the fourth tensile member at the inside of the bottom tube A bicycle prefabricated frame with features that are tightly coupled. 5. The method of claim 4,
And a coupling portion of the coupling members formed on both sides of the top tube and the bottom tube; A joint body configured to be protruded from each of the tension members is tightly coupled to the coupling hole so that the inside of each of the top tube and the bottom tube is sealed and an air valve unit is attached to each of the top tube and the bottom tube, Wherein the top tube and the bottom tube have an increased strength due to the elasticity of the compressed air. 5. The method of claim 4,
The tension member comprising: A joint body including a head tube, a tension body having a curved portion coupled to an outer circumferential surface of each of the seat tube and the bottom bracket shell so as to penetrate the tension body in tight contact with the joint of the joint member, Wherein a locking clamp hole is formed in the tensile body so that a flat portion having a size smaller than the diameter of the tensile portion is formed on both sides of the outer periphery of the tensile portion, And the pulling portion and the pulling rope are passed through the fitting portion of the coupling member through the flat portion of the pulling portion. The method of claim 9,
An engaging portion of the engaging member; Wherein the coupling member of the tension member comprises: And the inner diameter of the end portion of the coupling member is larger than the inner diameter of the coupling end of the coupling member. Therefore, leakage of the compressed fluid is prevented by closing the inside of the top tube and the bottom tube Bicycle prefabricated frame with features. The method according to claim 1,
At least one fixing hole for fixing the ejector is formed on an outer circumferential surface of each of the top tube and the bottom tube;
The withdrawal device comprising: A ratchet gear including a ratchet shaft in which a take-off rope is wound inside a take-out machine, and a key shaft in which a ratchet key is assembled are respectively mounted, and a cover ring to which the ratchet shaft is pivoted to the lower side of the outer circumferential surface of the take- And the fixing member is coupled to the inside of the cover by screw engagement so as to protrude to the outside of the inflator, and the inflator further comprises: And a key cover for opening the key shaft is coupled to the upper end of the drawer while being coupled by a screw connection so that the fixing member and the key cover ring are closely contacted to the fixing hole formed by the outer surface of the top tube and the bottom tube. Wherein the drawer is fixedly mounted inside the top tube and the bottom tube. 12. The method of claim 11,
The withdrawal device comprising: Wherein the ratchet shaft and the ratchet key are rotatably coupled to each other by a pair of the ratchet gear and the ratchet key on one side of the space, Wherein at least one winding opening through which the drawing rope is wound is formed and a wrench connecting hole is formed at a lower end of the ratchet shaft, A ratchet shaft is rotatably connected to the ratchet shaft through a wrench, the ratchet shaft being connected to the wrench connection hole and having a fastener for fastening the fastener member by screwing; A wrench connecting part is formed at an upper end of the key shaft to adjust the key shaft and to release the one-way winding of the ratchet shaft to adjust the winding state of the drawing rope;
Wherein the drawer is mounted on the top tube or the bottom tube while the drawing rope is arranged to be passed through the winding hole of the ratchet shaft. 13. The method according to any one of claims 11 to 12,
Wherein a flow passage communicating with the outer circumferential surface of the ratchet shaft is formed in the wrench connection hole formed at the lower end of the ratchet shaft of the take-out machine while an injection flow path and a valvet flow passage are formed inside the fixation member, Wherein a valve surface is formed on an upper surface and a valve body is disposed to configure an air valve;
The oil ring is mounted on each of the outer circumferential surfaces of the fixing member protruding to the outer circumferential surface of the ejector and both side surfaces of the key cover ring to seal the inner side of the top tube or the bottom tube so that the inside of the top tube or the bottom tube is filled with compressed air Bicycle prefabricated frame. 3. The method of claim 2,
Wherein an outer circumferential surface of the head tube constituting the first tension member is formed with a recessed concave portion of a curved curved surface portion of the tip end portion of the top tube, Wherein an outer circumferential surface of the second tension member is formed with an indented groove of a curved surface portion of the tip end of the bottom tube,
And a front end portion of the top tube and the bottom tube is formed as a curved curved surface portion and is tightly coupled to the head tube. The method according to claim 1,
A fifth tensile member to which a tail portion of the bottom tube is coupled to a lower front side of the seat tube; The pulling ropes are connected to the second tension member and the fifth tension member with the bottom tube disposed between the head tube and the seat tube so that the head tube and the seat tube are fixed to the bottom tube by the pulling force of the pull rope A bicycle prefabricated frame with features. 5. The method of claim 4,
Wherein the engaging member comprises: A curved tube ring curved axially outward at one end of the outer circumferential surface of the engaging member is formed to protrude and is brought into close contact with the outer circumferential surface of the cylindrical tube of the seat tube and the bottom bracket shell including the head tube; And wherein a diameter of an end portion of the curved tube ring is formed to be larger than a diameter of each of the both ends of each of the top tube and the bottom butt so that the engaging member is tightly fixed to the inside of both ends of the top tube and the bottom tube. . 9. The method according to any one of claims 1 to 8,
The top tube and the bottom tube are sealed so that the inside of the top tube and the bottom tube are sealed, and air blowing means is mounted on each of the top tube and the bottom tube,
A curved surface portion formed in one side of the tube with a fixing hole communicating with an inner side of the tube and being in close contact with an inner diameter surface of the tube and an adapter member having a flat surface portion are disposed in close contact with the inner side of the tube, A fixing hole communicating with the fixing hole;
A planar portion of the adapter member; An air valve body having an air valve body for opening and closing a valve and an adjusting rod for adjusting the air valve body are closely arranged and an air injection unit formed in the air valve body is inserted through the coupling hole and the tube fixing hole of the adapter member And a fixing nut is fastened to the air injecting part so as to protrude to an outer periphery of the outer circumference of the tube so that the air foot device is fixedly attached to the tube, . 9. The method according to any one of claims 1 to 8,
The top tube and the bottom tube are sealed so that the inside of the top tube and the bottom tube are sealed, and air blowing means is mounted on each of the top tube and the bottom tube,
The withdrawal device includes: The top tube and the bottom tube are configured such that the air valve is protruded from the outer circumferential surface of the top tube and the bottom tube while being filled with compressed air inside the top tube and the bottom tube. Bike prefabricated frame with increased strength.

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