KR20160118609A - Bike trailer - Google Patents

Bike trailer Download PDF

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Publication number
KR20160118609A
KR20160118609A KR1020150046988A KR20150046988A KR20160118609A KR 20160118609 A KR20160118609 A KR 20160118609A KR 1020150046988 A KR1020150046988 A KR 1020150046988A KR 20150046988 A KR20150046988 A KR 20150046988A KR 20160118609 A KR20160118609 A KR 20160118609A
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KR
South Korea
Prior art keywords
frame
coupled
bicycle
main frame
trailer
Prior art date
Application number
KR1020150046988A
Other languages
Korean (ko)
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KR101807117B1 (en
Inventor
이상태
Original Assignee
이상태
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Publication date
Application filed by 이상태 filed Critical 이상태
Priority to KR1020150046988A priority Critical patent/KR101807117B1/en
Priority to PCT/KR2015/010903 priority patent/WO2016159469A1/en
Publication of KR20160118609A publication Critical patent/KR20160118609A/en
Application granted granted Critical
Publication of KR101807117B1 publication Critical patent/KR101807117B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K27/00—Sidecars; Forecars; Trailers or the like specially adapted to be attached to cycles
    • B62K27/003—Trailers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J7/00—Luggage carriers
    • B62J7/02—Luggage carriers characterised by the arrangement thereof on cycles
    • B62J7/04—Luggage carriers characterised by the arrangement thereof on cycles arranged above or behind the rear wheel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K27/00—Sidecars; Forecars; Trailers or the like specially adapted to be attached to cycles
    • B62K2710/16—

Abstract

The present invention relates to a bike trailer capable of varying a size into a size proper to the quantity of cargos loaded therein, easily changing positions of auxiliary wheels according to properties of the loaded cargos, simply forming the towing-type trailer, having no necessity of a complex coupling process to transmit the power of a bicycle to a trailer wheel, having no necessity of preparing a long chain to provide the power to the trailer wheel, reducing possibilities of the separation of the chain during a ride by not increasing a length of the chain, and preventing a change of the state that the biker trailer is coupled to the bicycle due to forces in a longitudinal direction and a vertical direction generated during a ride. The bike trailer includes: a main frame having a horizontal frame composed of first horizontal frames arranged in pair to be parallel to each other and second horizontal frames connecting the ends of the first horizontal frames facing each other and a vertical frame extended upward or downward from one end of the horizontal frame; the trailer wheel formed between the first horizontal frames and formed to be able to rotate by having a shaft coupled to the first horizontal frame; an upper frame coupled to one side of the main frame and arranged in an upper side of the main frame; a lower frame coupled to one side of the main frame and arranged in a lateral side of the main frame; and a link frame coupled to one longitudinal end of the main frame and coupling the main frame to the bicycle.

Description

Bike trailer {Bike trailer}

The present invention relates to a trailer for a bicycle, and more particularly, to a trailer for a bicycle, which can be changed to an appropriate size according to the amount of cargo to be loaded, and the position of the auxiliary wheel can be easily changed according to the characteristics of the cargo to be loaded, So that it is possible to easily change the gear ratio while transmitting the power of the pedal to the trailer wheel and to provide power to the trailer wheel, And the risk of dropping the chain during operation is reduced, and the coupling between the bicycle and the bicycle is not deformed by the force in the longitudinal direction and the vertical direction generated during the operation.

Recently, the population who enjoy camping together with their family leaving their urban life is increasing rapidly.

This camping was mainly used to load luggage using automobiles. However, as a result of low carbon green growth, the number of people using bicycles increased, and the number of bicycle camping outings increased with the increase of bicycle population.

To enjoy camping on a bicycle, you must carry your baggage by putting your baggage on a backpack or attaching a bicycle trailer to your bicycle.

However, in the case of a backpack, a lot of luggage can not be accommodated, and when the backpack is heavy, a lot of physical power may be consumed for driving the bicycle, or the center of gravity may deviate from the risk of accident.

Therefore, it is common to mount a trailer for a bicycle at the rear of the bicycle. Such a bicycle trailer simply mounts a towing frame on a frame with a wheel, uses the towing frame on one side of the frame of the bicycle, A mechanism for separating one side of the bicycle frame, removing the bicycle wheel, and providing a long chain to transmit power from the bicycle pedal to the trailer wheel has also been developed.

However, such conventional trailers have a problem in that many points must be fixed in order to couple the towing table to the bicycle frame. In the case of the trailer of the power transmission type, a long chain should be further provided, and in order to mount the long chain, There has been a problem that the configuration of the bicycle must be disassembled to a large extent.

In addition, when the long chain is mounted, it is difficult to transmit the force from the pedal to the trailer wheel properly, and the chain is easily dislocated from the sprocket.

Further, in the case of a conventional trailer using a long chain, there is a problem in that it is difficult to perform the shifting while the vehicle is traveling, and the hill road must be scraped hard.

Therefore, in the case of the traction system, it is required to develop a trailer for a bicycle which can be easily attached to a minimum point and which can be easily mounted, and which is free from shifts, .

KR10-2014-0131640 (publication number) 2014.11.14

It is an object of the present invention to provide a trailer for a bicycle which can be changed to an appropriate size according to the amount of cargo to be loaded.

It is also an object of the present invention to provide a trailer for a bicycle which can easily change the position of the auxiliary wheel according to the characteristics of the cargo to be loaded.

It is also an object of the present invention to provide a trailer for a bicycle which can easily constitute a traction trailer.

It is another object of the present invention to provide a trailer for a bicycle in which a complicated joining process is not required to transmit bike power to a trailer wheel.

Further, the present invention has an effect that the gear ratio can be easily changed while transmitting the power of the pedal to the trailer wheel.

It is also an object of the present invention to provide a trailer for a bicycle in which a long chain is not required to provide power to the trailer wheel, and the risk of chain dislodgement is reduced because the chain is not long.

It is another object of the present invention to provide a trailer for a bicycle in which the coupling with the bicycle is not deformed by the force in the longitudinal direction and the up-and-down direction generated during the operation.

The present invention relates to a horizontal frame comprising a first horizontal frame arranged in parallel in pairs and a second horizontal frame connecting mutually opposing ends of the first horizontal frame and a horizontal frame extending upward or downward from one end of the horizontal frame A main frame including a vertical frame formed therein; A trailer wheel provided between the first horizontal frames and coupled to the first horizontal frames so as to be rotatable; An upper frame coupled to one side of the main frame and disposed above the main frame; A lower frame coupled to one side of the main frame and disposed laterally of the main frame; And a link frame coupled to one longitudinal end of the main frame to bind the main frame to the bicycle.

Further, the lower frame of the present invention is formed by bending or curving both sides of the lower frame toward the same direction, and one end and the other end of the lower frame are coupled to one end and the other end of the horizontal frame, Or one end of the lower frame is coupled to the other end of the horizontal frame and is provided rearward in the longitudinal direction with respect to the horizontal frame. When the lower frame is provided behind the horizontal frame, the lower frames are provided in pairs And an auxiliary frame coupled to the horizontal frame from both sides of the horizontal frame and coupled between the other ends of the lower frame to couple the lower frames.

Further, the present invention further includes a side auxiliary wheel for supporting the lower frame from the ground, and the lower frame is formed at one side of the side auxiliary wheel mounting portion to which the axis of the side wheel is coupled.

Further, the present invention further includes a rear auxiliary wheel for supporting the lower frame from the ground, and the auxiliary frame is formed at one side of the rear auxiliary wheel mounting portion to which the shaft of the rear wheel is coupled.

In addition, the present invention further includes a plate-shaped upper plate coupled to an upper end of the upper frame and supported by the upper frame, and a plate-shaped lower plate coupled to a side surface of the upper frame.

The lower plate of the present invention is coupled to an upper portion of the lower plate when the lower frame is provided behind the horizontal frame.

Further, the main frame of the present invention may further include a main frame fastener extending from one end of the main frame in the longitudinal direction, the link frame having one end coupled to the rear wheel axis of the bicycle and the other end hinged to the fastener.

Further, the main frame of the present invention may further include a link frame engaging portion protruding from one end of the main frame, one end of which is fixed to the seat stay of the bicycle, and the other end thereof is fixed to the link frame engaging portion.

Further, the present invention provides a sprocket comprising: a wheel-side chain sprocket coupled to an axis of the trailer wheel; A shaft fixing part protruding from one end of the main frame; A gear portion including a gear portion shaft fixed to the shaft fixing portion, a cassette sprocket inserted and coupled to the gear portion shaft, and a sprocket extending from the gear portion side to be inserted into the gear portion shaft so as to be spaced apart from the cassette sprocket; And a trailer chain mounted on the wheel side chain sprocket and the chain sprocket on the side of the gear portion to transmit power, wherein the gear part shaft is coupled to the chain stay end part of which the rear wheel of the bicycle is detached, Respectively.

Further, the main frame of the present invention further includes a main frame fastener extending longitudinally from one end thereof, and the main frame fastener is fixed to the chain stay of the bicycle.

Further, in the link frame of the present invention, the back handle is coupled to the upper portion.

According to the present invention, since the lower frame can be coupled to the side or rear direction of the main frame, it is possible to change the size to an appropriate size according to the amount of cargo to be loaded.

Further, since the auxiliary wheel can be selectively mounted on the side or rear surface of the lower frame, the position of the auxiliary wheel can be easily changed according to the characteristics of the cargo to be loaded.

Further, the present invention has an effect that a traction type trailer can be constructed simply by fixing the link frame to the rear wheel axis of the bicycle.

Further, the present invention is configured to include a gear portion provided with a gear portion shaft, so that the gear portion is only required to be mounted at a position where the rear wheel of the bicycle is removed, so that a complicated joining process is not necessary in order to transmit the bike power to the trailer wheel have.

Further, the present invention includes a gear portion having a cassette sprocket, so that the gear ratio can be easily changed while the power of the pedal is transmitted to the trailer wheel.

The present invention also eliminates the need to prepare a long chain to provide power to the trailer wheel since the power transmitted through the original chain is provided to the trailer wheel through the trailer chain, There is an effect of reducing the risk of chain disconnection during operation.

Further, the present invention has the effect that the main frame is fixed to the chain stay of the bicycle and the link frame is fixed between the main frame and the seat stay of the bicycle, so that the link frame is not deformed by the force in the longitudinal direction and the up- .

1 is an exploded perspective view of a trailer for a bicycle according to an embodiment of the present invention;
FIG. 2 is a first use state view of a bicycle trailer according to a first embodiment of the present invention; FIG.
3 is a second use state view of a bicycle trailer according to a first embodiment of the present invention;
Fig. 4 is a first use state view of a bicycle trailer according to a second embodiment of the present invention; Fig.
5 is a second use state view of a bicycle trailer according to a second embodiment of the present invention;
FIG. 6 is an enlarged view of a gear portion mounting structure of a trailer for a bicycle according to a second embodiment of the present invention; FIG.
FIG. 7 is an enlarged view showing a main frame fixing structure of a trailer for a bicycle according to a second embodiment of the present invention; FIG.
FIG. 8 is an enlarged view of a main part of a link frame fixing structure of a trailer for a bicycle according to a second embodiment of the present invention; FIG.
Fig. 9 is a state in which a trailing handle of a trailer for a bicycle according to a second embodiment of the present invention is applied. Fig.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 1 to 9, the present invention includes a first horizontal frame 110 arranged in pairs and a second horizontal frame 120 connecting opposite ends of the first horizontal frame 110 The main frame 100 includes a horizontal frame 101 and a vertical frame 130 extending upward or downward from one end of the horizontal frame 101. A trailer wheel 500 provided between the first horizontal frame 110 and the first horizontal frame 110 so as to be rotatable and coupled to the first horizontal frame 110 and a trailer wheel 500 coupled to one side of the main frame 100, A lower frame 400 coupled to one side of the main frame 100 and disposed at a side of the main frame 100 and a lower frame 400 coupled to one end of the main frame 100 at a longitudinal direction thereof, ) To the bicycle (200).

Fig. 1 shows a basic configuration of the present invention as an isolated perspective view. Referring to FIG. 1, the main frame 100 is provided with a trailer wheel 500 so as to be movable along a bicycle, and serves as a skeleton to which the upper frame 300 and the lower frame 400 are mounted. And includes a horizontal frame 101 having a square frame shape in plan view and a vertical frame 130 extending upward or downward from one end of the horizontal frame 101.

The horizontal frame 101 serves as a mounting table on which the trailer wheel 500 is mounted. The upper frame 300 is coupled to the upper frame 300, and the lower frame 400 is coupled to the side portions. A vertical frame 130 extends from one end of the horizontal frame 101.

For this purpose, the horizontal frame 101 is coupled such that the first horizontal frame 110 and the second horizontal frame 120 form opposite sides of a quadrangle, respectively. At this time, the horizontal frame 101 has a rectangular shape But it is preferable to have an arcuate shape when viewed from the side, in order to appropriately perform weight distribution to the auxiliary wheel 530 and bicycle which will be described later.

The first horizontal frame 110 is formed to be longer than the second horizontal frame 120 so that the trailer wheel 500 is positioned on the inner side. The second horizontal frame 120 is coupled to each of the opposite end portions of the first horizontal frame 110 to form a rectangular frame. A trailer wheel mounting portion 111 is formed at a lower end of one side of the first horizontal frame 110 so that the shaft of the trailer wheel 500 can be engaged.

The first horizontal frame 110 is formed in an upwardly curved arcuate shape and is branched into a Y-direction laterally in a direction of one end, that is, in a direction to be combined with the bicycle, so that the connection with the vertical frame 130 can be firmly established. And the end portions thereof may be coupled to the upper and lower ends of the vertical frame 130, respectively. Meanwhile, the upper frame 300 or the lower frame 400 can be coupled from one end and the other end of the first horizontal frame 110, and the upper frame 300 or the lower frame 300 can be coupled to the second horizontal frame 120, The frame 400 may be configured to be coupled.

The second horizontal frame 120 serves to connect between the opposite end portions of the first horizontal frame 110 and at the same time serves as a mount so that the upper frame 300 or the lower frame 400 can be mounted . For this, the second horizontal frame 120 is formed in a hollow pipe shape, and the end of the first horizontal frame 110 is welded or the like to the outer periphery of both end portions, and the lower frame 400 And can be inserted and fixed. Of course, after the lower end of the second horizontal frame 120 is further protruded to the outer side of the first horizontal frame 110 to form the lower frame fixture 121, It is needless to say that the method of inserting and fixing the peripheral portion to accommodate the peripheral portion and connecting the two pipe-shaped portions can be easily selected by those skilled in the art.

The second horizontal frame 120 is formed with an upper frame fixing hole 122 protruding upward from the outer periphery. The upper frame 300 may be inserted into the upper frame fixing hole 122 or may be fixed with a wedge screw after the upper frame 300 is inserted to receive the outer periphery of the upper frame fixing hole 122 have. At this time, one end of the upper frame 300 is inserted and fixed in the vertical frame 130, and the upper frame 300 is provided on the upper side of the main frame 100, The position where the ends of the upper frame 300 are coupled is not important.

The second horizontal frame 120 positioned in one direction of the main frame 100, that is, the bicycle direction, may be paired so as to connect the respective ends of the first horizontal frame 110 branched into the Y- A 'U' shaped main frame fixture 140 may be coupled to the second horizontal frame 120, which is paired in one direction of the frame 100, between the outer peripheries.

The vertical frame 130 extends from one end of the horizontal frame 101, that is, from the end portion of the bicycle toward the upper portion or the lower portion, and the link frame 200 coupling portion and the shaft fixing portion 131 are protruded. And preferably extends from one end of the first horizontal frame 110 so that the vertical frame 130 is composed of a pair of frames which are parallel to each other like the first horizontal frame 110.

At this time, the vertical frame 130 protrudes further upward than the position where the first horizontal frame 110 is engaged, and the upper frame 300 is inserted into the upper frame fixture 122 .

The upper frame 300 is formed by bending or curving in a 'C' shape or an arcuate shape so that both side ends face downward, and load the load on the upper end of the arcuate shape. The upper frame 300 is inserted and fixed to the horizontal frame 101 or the vertical frame 130 of the main frame 100 at both side ends thereof and is provided as a pair in parallel so that the upper plate 310 is coupled . At this time, the upper plate fixing part 311 is further provided so that the upper frame 300 can be fixed and the upper plate 310 can be fixed, so that both ends thereof are fixed to the upper surface of the upper plate 310 do. It is preferable that a plurality of the upper plate fixing parts 311 are provided and are arranged at regular intervals on the upper surface of the upper frame 300. The upper frame 300 and the upper plate 310 may be used not only for loading but also as a saddle for burning a person in the trailer of the present invention.

The upper frame 300 may further include an upper reinforcing frame, and the upper reinforcing frame may be relatively parallel to the upper surface of the upper frame 300. [ A hole 301 is formed in the upper reinforcing frame so that a lower plate 410 to be described later can be coupled. When the lower plate 410 is coupled to the upper frame 300, the lower plate 410 prevents the leg of the passenger sitting on the upper plate 310 from contacting the trailer wheel 500, have.

The lower frame 400 is formed by bending or curving in a " C " shape or an arcuate shape so that both ends thereof face in the same direction, and is formed to be parallel with the ground surface of the main frame 100 to form a flat upper surface . One end and the other end of the lower frame 400 are coupled to the other end of the horizontal frame 101 where the second horizontal frame 120 is positioned or one end of the lower frame 400 is connected to the other end of the horizontal frame 101 And may be coupled to the other end so as to be provided rearward in the longitudinal direction with respect to the horizontal frame 101. 3 and 5, when one end of the lower frame 400 is coupled to the other end of the horizontal frame 101 and is located behind the horizontal frame 101 in the longitudinal direction, the other end of the lower frame 400 The auxiliary frame 420 is separately provided for fixing the other end of the lower frame 400. [

The auxiliary frame 420 is inserted and fixed between the other ends of the pair of lower frames 400. The rear auxiliary wheel mounting portion 421 is extended from one side of the outer peripheral side of the auxiliary frame 420, do. The rear auxiliary wheel mounting portion 421 may be formed of a pair of rod-shaped frames so that the auxiliary wheel 530 can be mounted between the end portions 422 thereof so that the auxiliary frame 420 has a shape of ' . Since the auxiliary frame 420 does not need to be mounted with the auxiliary wheel 530 when the auxiliary wheel 530 is mounted on the lower frame 400, And angular adjustment of such an auxiliary frame 420 may be achieved by a wedge screw or a separate angle fixing means.

The lower frame 400 may further include a lower reinforcing frame, and the lower reinforcing frame may be relatively parallel to a side surface of the lower frame 400. A side auxiliary wheel mounting portion 401 protrudes from the lower reinforcing frame and a side auxiliary wheel mounting portion 401 protrudes from the lower frame 400 at a corresponding position so that the auxiliary wheel 530 can be mounted .

When the lower frame 400 is coupled to the rear of the main frame 100, it is not easy to load the cargo because the spaces between the lower reinforcing frames of the two lower frames 400 are empty spaces. In order to solve this problem, a lower plate 410 is coupled to an upper part of the lower frame 400 to form a bottom surface. At this time, the lower frames 400 are fixed to each other, So that both ends of the lower plate fixing portion 411 are fixed to the upper surface of the lower plate 410. It is preferable that a plurality of such lower plate fixing parts 411 are provided on the upper surface of the lower frame 400 at regular intervals.

The reason for selectively mounting the auxiliary wheel 530 on the side and rear sides is that when the auxiliary wheel 530 is coupled to the lower frame 400, its axis is coupled adjacent to the lower end of the lower frame 400, This is because the auxiliary wheel 530 protrudes to a certain portion of the upper portion of the lower frame 400. The auxiliary wheel 530 is mounted on the auxiliary frame 420 and the auxiliary wheel 530 is mounted on the lower frame 400 to load a long object, So that it is possible to easily load an object regardless of the size of the object.

The link frame 200 is coupled to one longitudinal end of the main frame 100 and binds the main frame 100 to the bicycle. For this purpose, the link frame 200 is formed in a 'V' shape and has a circular hole And the end of the V-shaped vertex is coupled to the main frame 100 and the double-ended end 210 is coupled to the rear wheel axis of the bicycle or the end of the V-shaped vertex Is coupled to the seat stay of the bicycle and the boss end (210) is coupled to the main frame (100).

The detailed description of this link frame 200 will be described in more detail in the following first and second embodiments.

The first embodiment of the present invention is a form in which the main frame 100 is swingably transversely from the bicycle as in a general trailer, and the end of the V-shaped vertex of the link frame 200, as shown in FIGS. 2 and 3, And is coupled to the main frame 100 and is configured such that the opposite end 210 is coupled to the rear wheel axis of the bicycle. At this time, a pair of cylindrical fixing holes 141 spaced apart from each other in the vertical direction are formed at one end of the main frame fixture 140 of the main frame 100 so that the end of the V-shaped vertex of the link frame 200 is fixed to the cylindrical fixing hole The fixing pin 142 is inserted and hinged to the inside of the cylindrical fixing hole 141 and the hole formed at the end of the V-shaped vertex of the link frame 200 from above.

Therefore, according to the first embodiment, the trailer wheel 500 is not provided with any additional power from the bicycle, but is relatively swingable with respect to the longitudinal direction of the bicycle, thereby enabling relatively free movement. Because of this characteristic, the first embodiment can be used for loading a light load or the like, but is not limited thereto.

4 to 9 show a second embodiment of the present invention. The second embodiment of the present invention is a structure in which the trailer wheel 500 is powered from a bicycle and includes a wheel side chain sprocket 501 coupled to the shaft of the trailer wheel 500, A gear part shaft 513 fixed to the shaft fixing part 131, a cassette sprocket 511 inserted into the gear part shaft 513, and a cassette sprocket 511, A gear portion 510 including a chain sprocket 512 on the side of a gear portion to be inserted into the gear portion shaft 513 and a trailer portion 512 mounted on the wheel side chain sprocket 501 and the gear portion side chain sprocket 512, And a gear part shaft 513 is coupled to a chain stay end of the bicycle whose rear wheel is detached, and a chain of bicycles is mounted on the cassette sprocket 511. [

More specifically, the main shaft 100 is formed with a shaft fixing part 131 protruding from one end, more specifically, from the outer circumferential side of the vertical frame 130 in the bike direction. The gear portion shaft 513 of the gear portion 510 is coupled to the shaft fixing portion 131 and the gear portion shaft 513 is coupled to the chain stay end portion of the bicycle where the rear wheel is detached, ).

The trailer wheel 500 is provided with a wheel side chain sprocket 501 on its shaft and is connected by a trailer chain 520 together with a sprocket 512 which is a gear side portion of the gear portion 510. Accordingly, the power generated from the pedal of the bicycle is transmitted to the gear portion 510 through the chain of the bicycle, and the power is transmitted through the trailer chain 520 mounted on the sprocket 512 of the gear portion side of the gear portion 510 . At this time, the wheel-side chain sprocket 501 may be further provided with a separate gear adjusting device, and the gear ratio may be adjusted in advance according to the weight of the cargo to be loaded, or the gear may be adjusted in real time through a separate wire You may.

The gear portion 510 includes a gear portion shaft 513 and a cassette sprocket 511 inserted into the gear portion shaft 513. The gear portion 510 is inserted into the gear portion shaft 513 so as to be separated from the cassette sprocket 511 And a chain sprocket 512 on the side of the gear portion.

The gear portion shaft 513 serves as a shaft on which the cassette sprocket 511 and the chain portion side chain sprocket 512 are installed and the shaft fixing portion 131 of the main frame 100 and the end portions of the bicycle chain stay To serve as a link. More specifically, the gear portion shaft 513 is spaced apart from the lower gear of the cassette sprocket 511 and spaced apart from the gear sprocket 512. The sprocket 512 and the chain sprocket 512 of the cassette sprocket 511, So that the chain stay end portion of the bicycle can be inserted into the spaced apart gap. Therefore, since no other component is located between the chain stay end of the bicycle and the cassette sprocket 511, the position of the cassette sprocket 511 relative to the gear changeable device of the bicycle is the same as that of the removed rear wheel of the bicycle There is an advantage that it can be used immediately without adjusting the gear changeable device of the bicycle.

The cassette sprocket 511 is constituted by continuously connecting chain sprockets having different outer diameters, and has a configuration similar to a gear mounted on the rear wheel of a bicycle. The cassette sprocket 511 is generally applicable to 7th to 9th gears, but is not limited thereto. 6, a chain of bicycles is attached to the cassette sprocket 511. At this time, the gear portion shaft 513 in the direction of the high gear of the cassette sprocket 511 is engaged with the shaft fixing portion 131 of the main frame 100, The chain of the bicycle may be mounted on the cassette sprocket 511. [ That is, the rear wheel and the gear mounted on the bicycle are removed, and the gear unit 510 is coupled to the rear wheel.

The chain sprocket 512 on the gear portion side is coupled to the gear portion shaft 513 and transmits power to the wheel side chain sprocket 501 through the trailer chain 520. The chain sprocket 512 is provided on the wheel side chain sprocket 501, But the present invention is not limited thereto.

The wheel-side chain sprocket 501, the trailer chain 520, and the gear unit 510 are not used in the first embodiment, but can be operated while being mounted without detaching. In this case, Is fixed to the shaft fixing part (131) of the main frame (100) and is maintained in a configuration in which power is not transmitted or transmitted.

It is possible to easily change the mode without adding any special configuration to the power transmission system through the gear unit 510 and the trailer chain 520 and from the first embodiment to the second embodiment which is a traction system, It becomes possible to cope flexibly according to the present invention.

In addition, since a separate long chain is not required to be provided from the position of the bicycle pedal to the trailer wheel 500 to provide power to the trailer wheel 500, the risk of disengagement of the chain during operation is reduced and a relatively large effort There is an advantage in that it is not necessary to apply the above.

However, at this time, when only the main frame 100 equipped with the gear part shaft 513 is coupled to the chain stay end of the bicycle, the trailer and the bicycle are engaged only by the coupling nut, There is a fear of rotating in the downward direction. Accordingly, in the second embodiment of the present invention, as shown in FIGS. 7 and 8, the coupling for strengthening the coupling between the trailer and the bicycle is performed.

7, when the main frame 100 is coupled to the chain stays of the bicycle, the main frame fixture 140 of the main frame 100 is positioned between the chain stays formed in both directions At this time, a pair of pin holders 150 having end portions curved inward and having fixing holes at one side are sandwiched in a sandwich structure in the upper and lower directions of the chain stay, The fixing pin 142 is inserted from the upper side to the lower side so that the main frame fixing hole 140 and the pin holder 150 are coupled to each other by being inserted between the cylindrical fixing holes 141 formed at the end of the frame fixing hole 140 . The upper and lower portions of the pair of pin holders 150 are then fastened with bolts and nuts so that the main frame 100 can be supported by the chain stays of the bicycle. This allows the trailer and the bicycle to maintain the angle of engagement without turning downward.

At this time, however, the force acting in the longitudinal direction still has to depend on the frictional force of the pin holder 150, and the link frame 200 is utilized to cope with the force acting in the longitudinal direction.

In the second embodiment of the present invention, the link frame 200 includes a V-shaped apex 220 and a wedge end 210 coupled to the main frame 100, The link frame fixing portion 132 is protruded from one side of the vertical frame 130 in the outer peripheral direction. The link frame fixing portion 132 is preferably positioned above the shaft fixing portion 131 and the double-link end portion 210 of the link frame 200 is engaged with the link frame fixing portion 132.

The V-shaped apex 220 of the link frame 200 is coupled to a seat stay of a bicycle. A pair of frame holders 230 having ends curved inwardly are provided for coupling the link frame 200 . A pair of frame holders 230 are coupled to sandwich the seat stay of the bicycle. A frame-shaped frame protrusion 231 protrudes from the upper surface of the upper frame holder 230. After the link frame 200 is inserted into the frame holder 230 so that the hole formed in the V-shaped apex 220 of the link frame 200 receives the frame protrusion 231 of the frame holder 230, The upper and lower portions of the holder 230 are fastened with bolts and nuts. The link frame 200 and the frame holder 230 can be more firmly fixed with a wedge screw or the like. The coupling structure of the link frame 200 allows the main frame 100 to resist a force received in the longitudinal direction.

Further, the holes formed in the V-shaped apexes 220 of the link frame 200 are preferably formed in a cylindrical shape, and such cylindrical holes may be formed sufficiently long. In this case, the T-shaped turning handle 240 can be mounted as shown in FIG. 9. The supporting table 241 of the turning handle 240 can be inserted into the cylindrical hole and fixed with a wedge screw or the like from the side. Accordingly, when the passenger is burned on the upper plate 310 of the trailer, the passenger can hold the traverse handle 240 so that the passenger can be operated safely.

Since the lower frame 400 can be coupled to the side surface or the rear surface of the main frame 100, the present invention having the above-described configuration can change the size to an appropriate size according to the amount of cargo to be loaded.

In addition, since the auxiliary wheel can be selectively mounted on the side or rear surface of the lower frame 400, the position of the auxiliary wheel can be easily changed according to the characteristics of the cargo to be loaded.

Further, the present invention has an effect that a traction type trailer can be constructed simply by fixing the link frame 200 to the rear wheel axis of the bicycle.

The present invention includes the gear portion 510 having the gear portion shaft 513 so that the gear portion 510 can be mounted at a position where the rear wheel of the bicycle is removed. 500), there is an effect that a complicated joining process is not necessary.

In addition, the present invention includes a gear portion 510 having a cassette sprocket 511, so that it is possible to easily change the gear ratio while transmitting the power of the pedal to the trailer wheel 500.

The present invention also eliminates the need to prepare a long chain to provide power to the trailer wheel 500 since the power transmitted through the original chain of luggage is provided to the trailer wheel 500 via the trailer chain 520 , The length of the chain is not lengthened, thereby reducing the risk of chain disconnection during operation.

The main frame 100 is fixed to the chain stay of the bicycle and the link frame 200 is fixed between the main frame 100 and the seat stay of the bicycle, There is an effect that the coupling with the bicycle is not deformed by the force.

100: main frame 101: horizontal frame
130: vertical frame 140: main frame fastener
200: link frame 300: upper frame
400: lower frame 500: trailer wheel
510: gear portion 520: trailer chain

Claims (11)

A horizontal frame having a first horizontal frame arranged in parallel to the first horizontal frame and a second horizontal frame connecting mutually opposed ends of the first horizontal frame and a vertical frame extending upward or downward from one end of the horizontal frame, A main frame including a main frame;
A trailer wheel provided between the first horizontal frames and coupled to the first horizontal frames so as to be rotatable;
An upper frame coupled to one side of the main frame and disposed above the main frame;
A lower frame coupled to one side of the main frame and disposed laterally of the main frame;
A link frame coupled to one longitudinal end of the main frame to bind the main frame to the bicycle;
Bicycle trailer. The method according to claim 1,
Wherein the lower frame is formed by bending or curving both ends thereof in the same direction,
Wherein one end and the other end of the lower frame are coupled to one end and the other end of the horizontal frame, respectively, or one end of the lower frame is coupled to the other end of the horizontal frame, Respectively,
When the lower frame is provided at the rear of the horizontal frame, the lower frames are provided in pairs and are coupled to the horizontal frame from both sides of the horizontal frame, and are coupled between the other ends of the lower frame, Further comprising a subframe for engaging the bicycle. 3. The method of claim 2,
Further comprising a side auxiliary wheel for supporting the lower frame from the ground,
Wherein the lower frame is formed at one side of a side auxiliary wheel mounting portion to which an axis of the side wheel is coupled. 3. The method of claim 2,
Further comprising a rear auxiliary wheel for supporting the lower frame from the ground,
Wherein the auxiliary frame is formed at one side of the rear auxiliary wheel mounting portion to which the shaft of the rear wheel is coupled. The method according to claim 3 or 4,
And a plate-shaped lower plate coupled to a side surface of the upper frame, wherein the plate-shaped lower plate is coupled to an upper end of the upper frame and is supported by the upper frame. 6. The method of claim 5,
Wherein the lower plate is coupled to an upper portion of the lower plate when the lower frame is provided behind the horizontal frame. The method according to claim 6,
Wherein the main frame further comprises a main frame fastener extending longitudinally from one end thereof,
Wherein the link frame has one end coupled to a rear wheel axis of the bicycle and the other end hinged to the fixture. The method according to claim 6,
The main frame further includes a link frame engaging portion protruding from one end,
Wherein the link frame is fixed at one end to a seat stay of the bicycle and the other end is fixed to the link frame engaging portion. 9. The method of claim 8,
A wheel side chain sprocket coupled to an axis of the trailer wheel;
A shaft fixing part protruding from one end of the main frame;
A gear portion including a gear portion shaft fixed to the shaft fixing portion, a cassette sprocket inserted and coupled to the gear portion shaft, and a sprocket extending from the gear portion side to be inserted into the gear portion shaft so as to be spaced apart from the cassette sprocket;
A trailer chain mounted on the wheel side chain sprocket and the chain sprocket on the gear side to transmit power;
, ≪ / RTI >
Wherein the gear part shaft is coupled to a chain stay end of which the rear wheel of the bicycle is detached, and the cassette sprocket is mounted on the chain of the bicycle. 10. The method of claim 9,
Wherein the main frame further comprises a main frame fastener extending longitudinally from one end thereof,
Wherein the main frame fastener is fixed to the chain stay of the bicycle. 11. The method of claim 10,
Wherein the link frame is coupled to an upper portion of a trailing handle.
KR1020150046988A 2015-04-02 2015-04-02 Bike trailer KR101807117B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020150046988A KR101807117B1 (en) 2015-04-02 2015-04-02 Bike trailer
PCT/KR2015/010903 WO2016159469A1 (en) 2015-04-02 2015-10-15 Trailer for bicycle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150046988A KR101807117B1 (en) 2015-04-02 2015-04-02 Bike trailer

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KR20160118609A true KR20160118609A (en) 2016-10-12
KR101807117B1 KR101807117B1 (en) 2017-12-08

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140131640A (en) 2013-05-06 2014-11-14 홍영훈 Bike trailer for camping

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5054800A (en) * 1990-06-11 1991-10-08 Christensen Linda B Bicycle trailer for small children
US6182990B1 (en) * 1999-03-11 2001-02-06 Richard C. Everett Folding trailer for a bicycle
US6585285B2 (en) * 2001-09-28 2003-07-01 Ken A. Adkison Modular load transporting trailer
KR200405645Y1 (en) 2005-10-10 2006-01-11 이동명 Trailer for bicycle
US7341265B1 (en) * 2006-02-27 2008-03-11 Cheh-Kang Liu Frame structure for foldable baby trailer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140131640A (en) 2013-05-06 2014-11-14 홍영훈 Bike trailer for camping

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KR101807117B1 (en) 2017-12-08

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