KR20170007916A - length adjustable bicycle frame - Google Patents

length adjustable bicycle frame Download PDF

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Publication number
KR20170007916A
KR20170007916A KR1020150098926A KR20150098926A KR20170007916A KR 20170007916 A KR20170007916 A KR 20170007916A KR 1020150098926 A KR1020150098926 A KR 1020150098926A KR 20150098926 A KR20150098926 A KR 20150098926A KR 20170007916 A KR20170007916 A KR 20170007916A
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KR
South Korea
Prior art keywords
frame
length
mounting portion
seat frame
seat
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KR1020150098926A
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Korean (ko)
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KR101759783B1 (en
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김영한
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김영한
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Priority to KR1020150098926A priority Critical patent/KR101759783B1/en
Publication of KR20170007916A publication Critical patent/KR20170007916A/en
Application granted granted Critical
Publication of KR101759783B1 publication Critical patent/KR101759783B1/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
    • B62K19/00—Cycle frames

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)

Abstract

A length adjustable bicycle frame is disclosed. In one embodiment, the length-adjustable bicycle frame includes a head frame having a handlebar connected to one end and a front wheel connected to the other end, a seat frame having a saddle connected to one end and a pedal connected to the other end, A top frame connecting the frame and the one end of the seat frame, and a down frame connecting the head frame and the other end of the seat frame. A length of the top frame positioned between the head frame and the seat frame, a length of the down frame, or a combination thereof. A mount portion on which the top frame can be mounted may be formed at the one end of the seat frame, and the down frame may be rotatably connected to the other end of the seat frame. In this case, the top frame is moved toward the mounting portion and is mounted on the mounting portion, and the down frame rotates with respect to the other end portion of the seat frame, whereby the top frame, which is positioned between the head frame and the seat frame, The lengths of the first and second elastic members can be variably adjusted.

Description

Length adjustable bicycle frame {length adjustable bicycle frame}

BACKGROUND OF THE INVENTION [0002] The present disclosure relates generally to bicycle frames, and more particularly to bicycle frames that are adjustable in length.

Generally, a bicycle is a moving means that drives a front wheel or a rear wheel by using a pressing force of a user's pedal. Recently, as interest in health and leisure has increased, the demand for bicycles as a means of recreation has been increasing with health promotion effect. In addition, as environmental problems have arisen, the use of bicycles that do not emit pollutants at all has been increasingly used instead of transportation systems using fossil fuels such as automobiles. Accordingly, Investment is also increasing.

In response to such environmental changes, bicycles of various purposes and functions have been developed and used, such as for mountain use and for mockery use. However, conventional bicycles can not be adjusted in length, so that when a bicycle having a predetermined length is purchased, it is difficult for families with different heights to use it together. Bicycles must be purchased separately by size for different families of elderly people to use bicycles. In addition, in the case of a family with a child in the growing period, there is a problem that the bicycle must be purchased in addition to the child's body shape as the child grows. This leads to an unnecessary increase in the cost of the home economy.

The length-adjustable bicycle frame disclosed in this specification can variably adjust at least one selected length from the length of the top frame located between the head frame and the seat frame, the length of the down frame, or a combination thereof. Thus, it is advantageous that a plurality of users having different heights can use one bicycle at the same time.

In one embodiment, a length adjustable bicycle frame is disclosed. The bicycle frame includes a handlebar connected to one end of the bicycle frame and a front wheel connected to the other end of the bicycle frame, a seat frame having a saddle connected to one end and a pedal connected to the other end, A top frame connecting the one end and a down frame connecting the other end of the seat frame with the head frame. A length of the top frame positioned between the head frame and the seat frame, a length of the down frame, or a combination thereof.

The bicycle frame may include a seat stay and a chain stay. One end of the seat stay may be connected to the top frame, and the other end may be connected to the rear wheel. One end of the chain stay may be connected to the down frame, and the other end may be connected to the rear wheel.

A mount portion on which the top frame can be mounted may be formed at the one end of the seat frame, and the down frame may be rotatably connected to the other end of the seat frame. In this case, the top frame is moved toward the mounting portion and is mounted on the mounting portion, and the down frame rotates with respect to the other end portion of the seat frame, whereby the top frame, which is positioned between the head frame and the seat frame, The lengths of the first and second elastic members can be variably adjusted.

The mounting portion has a contact surface having a shape corresponding to the shape of the surface of the top frame, and the top frame can be mounted on the mounting portion by sliding movement along the contact surface of the mounting portion.

And a fixing unit connected to the seat frame, the top frame, and the down frame, and configured to stably fix the length of the top frame positioned between the head frame and the seat frame while maintaining a predetermined length .

The fixing portion may include a moving portion, a first connecting portion, and a second connecting portion. The moving part moves along the top frame and can be fixed at a predetermined position. One end of the first connection part may be connected to the moving part. And the other end of the second connection part may be connected to the moving part. In this case, the other end of the first connecting part is rotatably connected to the other end of the seat frame, and one end of the second connecting part is rotatably connected to the down frame at a predetermined position, The length of the top frame positioned between the head frame and the seat frame can be stably fixed while maintaining the predetermined length even if the length of the top frame positioned between the seat frames is variably adjusted.

The down frame may include a first slide bar having a first movement passage therein and a first slide bar through which the other end can be introduced through the one end of the first cylinder and move through the first movement passage. The other end of the first cylinder and the one end of the first slide bar are connected to the other end of the seat frame and the head frame, respectively, or the other end of the first cylinder and one end of the first slide bar The down frame can be pivotally connected to the other end of the seat frame by being connected to the head frame and the other end of the seat frame. In this case, the length of the down frame located between the head frame and the seat frame can be variably adjusted by adjusting the length of the first slide bar introduced through the first movement path.

And a fixing unit connected to the seat frame, the top frame, and the down frame, and configured to stably fix the length of the top frame positioned between the head frame and the seat frame while maintaining a predetermined length .

The fixing part may include a moving part which moves along the top frame and can be fixed at a predetermined position, a first connecting part whose one end is connected to the moving part, and a second connecting part whose other end is connected to the moving part have. And the other end of the first connection portion is pivotally connected to the other end of the seat frame, and one end of the second connection portion is rotatably connected to the down frame at a predetermined position, The length of the top frame positioned between the head frame and the seat frame can be stably fixed while maintaining the predetermined length even if the length of the top frame located in the top frame is varied.

The first connecting portion may include a second cylinder having a second moving passage therein, and a second slide bar capable of moving through the one end of the second cylinder and moving through the second moving passage. The other end of the second cylinder and the one end of the second slide bar are respectively connected to the other end of the seat frame and the moving part or the other end of the second cylinder and one end of the first slide bar The one end of the first connecting portion and the other end of the first connecting portion may be connected to the moving portion and the other end of the seat frame, respectively, by being connected to the moving portion and the other end portion of the seat frame. In this case, the length of the second slide bar introduced through the second moving passage may be adjusted to stably fix the length of the top frame while maintaining a predetermined length.

The mounting portion includes a first mounting portion and a second mounting portion, and the top frame may include a first rod and a second rod which are arranged to face each other. The first mounting portion and the second mounting portion may be formed to be substantially symmetrical to the surface of the one end of the seat frame. One end of the first rod and one end of the second rod may be connected to the head frame, respectively. The other end of the first rod and the other end of the second rod may be disposed with the seat frame interposed therebetween. The other end of the first rod moves toward the first mounting portion and is mounted on the first mounting portion, and the other end of the second rod moves toward the second mounting portion, So that the length of the top frame positioned between the head frame and the seat frame can be variably adjusted.

The first mounting portion and the second mounting portion may have a first contact surface and a second contact surface, respectively, having a shape corresponding to the shape of the surface of the first rod and the shape of the surface of the second rod. The first rod and the second rod are respectively moved in a sliding manner along the first contact surface of the first mounting portion and the second contact surface of the second mounting portion to thereby mount the first mounting portion and the second mounting portion on the first mounting portion and the second mounting portion, .

And a coupling unit connecting the other end of the first rod and the other end of the second rod. The coupling portion can prevent the top frame from being separated from the seat frame.

The foregoing provides only a selective concept in a simplified form as to what is described in more detail hereinafter. The present disclosure is not intended to limit the scope of the claims or limit the scope of essential features or essential features of the claims.

1 is a view showing a general bicycle.
Figure 2 is a view of one embodiment of a length adjustable bicycle frame disclosed herein.
3 is a view for explaining the operation of one embodiment of the length-adjustable bicycle frame disclosed in this specification;
4 is a view for explaining the operation of the fixing part of the length-adjustable bicycle frame disclosed in this specification according to one embodiment.

Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the drawings. Like reference numerals in the drawings denote like elements, unless the context clearly indicates otherwise. The exemplary embodiments described above in the detailed description, the drawings, and the claims are not intended to be limiting, and other embodiments may be utilized, and other variations are possible without departing from the spirit or scope of the disclosed technology. Those skilled in the art will appreciate that the components of the present disclosure, that is, the components generally described herein and illustrated in the figures, may be arranged, arranged, combined, or arranged in a variety of different configurations, all of which are expressly contemplated, As shown in FIG. In the drawings, the width, length, thickness or shape of an element, etc. may be exaggerated in order to clearly illustrate the various layers (or films), regions and shapes.

The description of the disclosed technique is merely an example for structural or functional explanation and the scope of the disclosed technology should not be construed as being limited by the embodiments described in the text. That is, the embodiments are to be construed as being variously embodied and having various forms, so that the scope of the rights of the disclosed technology should be understood to include equivalents capable of realizing the technical ideas.

When an element is referred to as being "disposed on another element ", it includes not only the element directly disposed on the other element but also the case where an additional element is interposed therebetween.

It is to be understood that when an element is referred to as being "connected" to another element, it may be directly connected to the other element, but there may be other elements in between. On the other hand, when an element is referred to as being "directly connected" to another element, it should be understood that there are no other elements in between. On the other hand, other expressions that describe the relationship between components, such as " between " and " between "

It is to be understood that the singular " include " or " have " are to be construed as including the stated feature, number, step, operation, It is to be understood that the combination is intended to specify that it is present and not to preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

As used herein, the term " one-sided " is to be understood as a term including a portion adjacent to one end in addition to the one end commonly used.

The term other end used in this specification is to be understood as a term including a portion adjacent to the other end in addition to the other end commonly used.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the disclosed technology belongs, unless otherwise defined. Terms defined in commonly used dictionaries should be interpreted to be consistent with meaning in the context of the relevant art and can not be construed as having ideal or overly formal meaning unless expressly defined in the present application.

1 is a view showing a general bicycle. 1, a typical bicycle includes a head frame 10, a seat frame 20, a top frame 30, a down frame 40, a seat stay 70, seat stay and chain stay 80. [ A handle bar is connected to one end of the head frame 10 and a front wheel is connected to the other end. A saddle is connected to one end of the seat frame 20 and a pedal portion 50 is connected to the other end. The top frame 30 connects the head frame 10 and the one end of the seat frame 20. The down frame 40 connects the head frame 10 and the other end of the seat frame 20. The seat stay 70 has one end connected to the top frame 30 and the other end connected to the rear wheel. One end of the chain stay 80 is connected to the down frame 40, and the other end is connected to the rear wheel.

The pedal portion 50 is disposed around an axis formed at a portion where the seat frame 20 and the down frame 40 are connected. That is, the pedal portion 50 includes the crank 52 and the left and right pedals 54. [ The crank 52 is connected to the rear sprocket 58 through a chain 56. The user of the bicycle steps on the pedal 54, and the bicycle is driven by the force of stepping on the pedal 54. [ The bicycle having such a configuration can easily balance the front wheels and the rear wheels by making each of the frames form an almond shape, and can ensure stable characteristics in the course of driving.

Conventional bicycles have a double folded structure of the seat frame 20 on which the saddle is mounted, so that the height of the saddle can be adjusted. In this way, the user can steadily operate the saddle by adjusting the height of the saddle in accordance with the position where his / her feet can properly reach the pedal 54. [ That is, the conventional bicycle can adjust the height of the saddle in the upward and downward directions to adjust the distance between the feet of the user and the pedal 54. [ However, since the distance between the head frame 10 and the seat frame 20 can not be variably controlled, a separate bicycle must be purchased according to the size of the user's body.

The length adjustable bicycle frame disclosed herein has been derived in the process to solve this problem. Hereinafter, the structure, operation, and the like of the length-adjustable bicycle frame disclosed in this specification will be described with reference to FIG. 2 to FIG.

Figure 2 is a view of one embodiment of a length adjustable bicycle frame disclosed herein. 3 is a view for explaining the operation of one embodiment of the length-adjustable bicycle frame disclosed in this specification; 4 is a view for explaining the operation of the fixing part of the length-adjustable bicycle frame disclosed in this specification according to one embodiment.

Referring to the drawings, a length adjustable bicycle frame 100 includes a head frame 110, a seat frame 120, a top frame 130, and a down frame 140. In some other embodiments, the bicycle frame 100 may optionally further include a fixation portion 150. In some other embodiments, the bicycle frame 100 may optionally further include a mating portion 160.

The bicycle frame 100 may have at least one length selected from the length of the top frame 130 located between the head frame 110 and the seat frame 120, the length of the down frame 140, .

A handle bar (not shown) is connected to one end of the head frame 110, and a front wheel (not shown) is connected to the other end. In the figure, a cylindrical head frame 110 is shown as an example. The handle bar may be connected to an upper portion corresponding to the one end of the head frame 110 and the front wheel may be connected to a lower portion corresponding to the other end of the head frame 110. Further, in the drawing, a hollow cylindrical head frame 110 is shown as an example. As another example, as shown in the drawings, the head frame 110 may have a solid shape that is tight enough to connect the handlebar and the front wheel. The shape and material of the head frame 110 are not limited as long as the handlebar and the front wheel can be connected.

A saddle (not shown) is connected to one end of the seat frame 120, and a pedal portion (not shown) is connected to the other end. In the figure, a cylindrical seat frame 120 is shown as an example. The saddle may be connected to an upper portion corresponding to the one end of the seat frame 120, and the pedal portion may be connected to a lower portion corresponding to the other end of the seat frame 120. Further, in the drawing, a hollow cylindrical sheet frame 120 is shown as an example. As another example, as shown in the drawings, a seat frame 120, which can connect the saddle and the pedal portion, may have the shape of a solid solid. There is no limitation on the shape and material of the seat frame 120 as long as the saddle and the pedal portion can be connected.

The top frame 130 connects the head frame 110 and the one end of the seat frame 120. In the figure, a top frame 130 including a first rod 132 and a second rod 134 disposed opposite to each other is illustrated as an example. The first rod 132 and the second rod 134 may be formed to be substantially symmetrical to the surface of the one end of the seat frame 120. One end of the first rod 132 and one end of the second rod 134 are connected to the head frame 110 respectively and the other end of the first rod 132 and the other end of the second rod 134 are connected to the head frame 110, And can be disposed with the frame 120 therebetween. Meanwhile, the first rod 132 and the second rod 134 may be connected to each other through at least one first rod and a second rod connection 136. So that the top frame 130 can have a stable supporting structure.

In one embodiment, a mounting portion 122 to which the top frame 130 can be mounted may be formed at the one end of the seat frame 120. The mounting portion 122 may include a lower mounting portion 122a that supports the top frame 130 from below and an upper mounting portion 122b that supports the top frame 130 from above. In the figure, for example, a lower mounting portion 122a and an upper mounting portion 122b having a cylindrical shape are shown. As an example for the sake of understanding, the above example is not limited in the shape of the lower mounting portion 122a and the upper mounting portion 122b as long as the top frame 130 can be mounted. Further, in the drawing, a pair of lower mounting portions 122a and upper mounting portions 122b as the mounting portions 122 are shown as an example. As another example, unlike the drawings, the mounting portion 122 may include only the lower mounting portion 122a, as long as the top frame 130 can be mounted. The top frame 130 can be mounted through the mounting part 122 and the position of the top frame 130 can be changed to change the position of the top frame 130 The length can be adjusted. The length of the top frame 130 located between the head frame 110 and the seat frame 120 is set to a desired length by changing the position of the top frame 130, (Not shown) coupled with the first fastening portion (not shown).

The mounting portion 122 may have a contact surface (not shown) having a shape corresponding to the shape of the surface of the top frame 130. So that the top frame 130 can be mounted on the mounting part 122 by sliding movement along the contact surface of the mounting part 122.

Referring again to the drawings, a top frame 130 including a first rod 132 and a second rod 134, which are disposed facing each other as a top frame 130, is illustrated by way of example. Also, in the drawing, a pair of mounting portions 122 including a first mounting portion and a second mounting portion are shown as an example. The first mounting portion and the second mounting portion respectively have a first contact surface (not shown) having a shape corresponding to the shape of the surface of the first rod 132 and a shape of the surface of the second rod 134, (Not shown). The first rod (132) and the second rod (134) move in a sliding manner along the first contact surface of the first mount portion and the second contact surface of the second mount portion, respectively, It can be mounted on a mounting part. In this case, the other end of the first rod 132 moves toward the first mounting portion and is received in the first mounting portion, and the other end of the second rod 134 moves toward the second mounting portion, The length of the top frame 130 located between the head frame 110 and the seat frame 120 can be variably adjusted.

As another example, unlike that shown in the figure, the top frame 130 may be implemented as a single frame. In this case, the top frame 130 implemented with one frame may be mounted on the mounting portion 122 formed on the seat frame 120.

Meanwhile, a through hole (not shown) may be formed in a portion adjacent to the one end of the seat frame 120. The top frame 130 embodied as one frame may be mounted on the seat frame 120 through the through holes of the seat frame 120. In this case, the length of the top frame 130 located between the head frame 110 and the seat frame 120 can be variably adjusted in such a manner that the top frame 130 passes through the through holes.

The techniques disclosed herein will be described using a top frame 130 that includes a first rod 132 and a second rod 134 disposed opposite each other for ease of explanation. It is clear that this description is not intended to limit the scope of the invention disclosed herein.

The down frame 140 connects the head frame 110 and the other end of the seat frame 120. The down frame 140 may be pivotally connected to the other end of the seat frame 120. As a result, the top frame 130 moves toward the mounting portion 122 and is mounted on the mounting portion 122. When the down frame 140 rotates about the other end of the seat frame 120, The length of the top frame 130 positioned between the frame 110 and the seat frame 120 can be variably adjusted. In one example, the down frame 140 may be pivotally connected through axial coupling with the other end of the seat frame 120, as shown by way of example in the drawings.

In the figure, a first cylinder 142 having a first moving passage (not shown) therein and a first slide bar 142 having a first end connected to one end of the first cylinder 142 and capable of moving through the first moving passage A pair of down frames 140 including a plurality of down frames 144 are illustrated by way of example. As another example, contrary to what is shown in the figures, it will be appreciated that one or more than one pair of down frames 140 may be used.

The other end of the first cylinder 142 and one end of the first slide bar 144 are connected to the other end of the seat frame 120 and the head frame 100, (140) may be pivotally connected to the other end of the seat frame (120). The other end of the first cylinder 142 and one end of the first slide bar 144 are connected to the other end of the head frame 110 and the seat frame 120, respectively, The frame 140 may be pivotally connected to the other end of the seat frame 120.

In this case, by adjusting the length of the first slide bar 144 introduced through the first movement path, the length of the down frame 140 positioned between the head frame 110 and the seat frame 120 can be variably adjusted . In one example, the first moving passage can be formed by forming a moving passage inside the first cylinder 142 and forming a thread on the surface of the moving passage. In this case, the one end of the first slide bar 144 may be provided with a thread corresponding to the thread formed on the surface of the movement passage. The first slide bar 144 is inserted through the first movement passage through a screw connection between the thread formed on the surface of the movement passage and the thread formed at the one end of the first slide bar 144, The length can be adjusted. The length of the down frame 140 positioned between the head frame 110 and the seat frame 120 can be variably adjusted. As an example for the sake of understanding, the above example is not limited as long as the length of the first slide bar 144 flowing through the first moving passage can be adjusted.

The fixing part 150 is connected to the seat frame 120, the top frame 130 and the down frame 140 and the length of the top frame 130 located between the head frame 110 and the seat frame 120 It is possible to perform a function of stably fixing the optical fiber while maintaining a predetermined length.

The fixing part 150 moves along the top frame 130 and includes a moving part 152 that can be fixed at a predetermined position, a first connecting part 154 having one end connected to the moving part 152, And a second connection unit 156 connected to the moving unit 152. The other end of the first connection part 154 is rotatably connected to the other end of the seat frame 120. The one end of the second connection part 156 is rotatably connected to the down frame 140 at a predetermined position Even if the length of the top frame 130 positioned between the head frame 110 and the seat frame 120 is variably adjusted, the height of the top frame 130 located between the head frame 110 and the seat frame 120 The length can be stably fixed while maintaining the predetermined length. For example, the fixing portion 150 may be fixed to the seat frame 120 through the axial coupling between the other end portion of the first connection portion 154 and the other end portion of the seat frame 120, And may be rotatably connected to the other end. In one example, as shown in the figure by way of example, the fixing portion 150 may be configured such that one end of the second connecting portion 156 is axially coupled with the down frame 140 at the predetermined position of the down frame 140 And can be pivotally connected at the predetermined position of the down frame 140. [

As shown by way of example in FIG. 4, the moving part 152 may have a structure that can be laid over the top of the top frame 130. Accordingly, it is possible to prevent the moving part 152 from falling down from the top frame 130 to the down frame 140. In addition, the moving unit 152 can be easily moved along the top frame 130 during the sliding process. As an example for the sake of understanding, the above example is not limited to the structure of the moving part 152 as long as it moves along the top frame 130 and can be fixed at a predetermined position.

In one embodiment, the first connecting portion 154 has a second cylinder 154a having a second moving passage (not shown) therein, and the other end thereof is introduced through one end of the second cylinder 154a, And a second slide bar 154b movable through the movement path. The other end of the second cylinder 154a and one end of the second slide bar 154b are respectively connected to the other end of the seat frame 120 and the moving part 152 or the other end of the second cylinder 154a, One end of the second slide bar 145b is connected to the other end of the moving part 152 and the seat frame 120 so that the one end of the first connecting part 154 and the other end of the first connecting part 154 May be connected to the moving part 152 and the other end of the seat frame 120, respectively. By adjusting the length of the second slide bar 154b flowing through the second movement passage, the length of the top frame 130 can be stably fixed while maintaining the predetermined length.

In FIG. 4, the first connection part 154 and the second connection part 156 fixedly connected to the moving part 152 are shown as an example. The connection between the moving part 152 and the first connection part 154 and the second connection part 156 may be performed through a screw connection, a welding connection, or the like.

4, the first connecting portion 154 and the second connecting portion 156 may be rotatably connected to the moving portion 152 through ball joints, respectively. More specifically, a spherical head (not shown) may be formed on the one end of the first connection part 154 connected to the moving part 152 and the other end of the second connection part 156, respectively. (Not shown) having a shape corresponding to the spherical head are formed at corresponding parts of the moving part 152 connected to the one end of the first connecting part 154 and the other end of the second connecting part 156, Can be formed. The spherical head can freely rotate in the depressed portion. Through this coupling, the one connecting portion 154 and the second connecting portion 156 can be rotatably connected to the moving portion 152, respectively. The top frame 130 positioned between the head frame 110 and the seat frame 120 can be fixed to the seat frame 120 even if the length of the top frame 130 positioned between the head frame 110 and the seat frame 120 is variably adjusted. So that the length of the protrusion can be stably fixed while maintaining the predetermined length.

The engaging portion 160 may connect the other end of the first rod 132 and the other end of the second rod 134. So that the engaging portion 160 can prevent the top frame 130 from being separated from the seat frame 120.

One end of the seat stay 170 may be connected to the top frame 130 and the other end may be connected to the rear wheel. One end of the chain stay 180 may be connected to the down frame 140, and the other end may be connected to the rear wheel.

Referring again to the drawings, the length adjustable bicycle frame 100 disclosed herein may be moved to the mount 122 and mounted on the mount 122 by the top frame 130. In addition, the down frame 140 can be rotated based on the other end of the seat frame 120. The length of the top frame 130 positioned between the head frame 110 and the seat frame 120 can be variably controlled.

In addition, the length-adjustable bicycle frame 100 disclosed in this specification includes a first cylinder 142 having a first moving path therein and a second cylinder 142 having the other end thereof introduced through one end of the first cylinder 142, The length of the down frame 140 located between the head frame 110 and the seat frame 120 can be varied by using the down frame 140 including the first slide bar 144 that can move through the moving path Can be adjusted.

In addition, the length-adjustable bicycle frame 100 disclosed in this specification can stably maintain the lengths of the top frame 130 and the down frame 140 adjusted through the fixing portion 150. [

As described above, the length-adjustable bicycle frame 100 disclosed in this specification includes a length of the top frame 130 located between the head frame 110 and the seat frame 120, a length of the down frame 140 Or a combination thereof, can be variably controlled. Thus, a plurality of users having different heights can use a single bicycle at the same time. In the case of a family with a growing child, it is possible to solve the problem of purchasing an additional bicycle in accordance with the body shape of the child as the child grows, thereby preventing an unnecessary increase in cost in the home economy. Further, the length-adjustable bicycle frame 100 disclosed in this specification is easy to separate the bicycle frame. This has the advantage that the volume can be reduced when the bicycle is transported for long distance travel.

From the foregoing it will be appreciated that various embodiments of the present disclosure have been described for purposes of illustration and that there are many possible variations without departing from the scope and spirit of this disclosure. And that the various embodiments disclosed are not to be construed as limiting the scope of the disclosed subject matter, but true ideas and scope will be set forth in the following claims.

100: Bicycle frame with adjustable length
110: Head frame
120: sheet frame
122:
122a: Lower mounting portion
122b: upper mounting portion
130: Top frame
132: First load
134: second load
136: first rod and second rod connection
140: Down frame
142: first cylinder
144: first slide bar
150:
152:
154: first connection portion
154a: second cylinder
154b: second slide bar
156: second connection portion
160:
170: Seat stay
180: Chain stay

Claims (10)

A head frame having a handle bar connected to one end and a front wheel connected to the other end;
A seat frame having a saddle connected to one end and a pedal connected to the other end;
A top frame connecting the head frame and the one end of the seat frame; And
And a down frame connecting the head frame and the other end of the seat frame,
Wherein a length of at least one of a length of the top frame located between the head frame and the seat frame, a length of the down frame, or a combination thereof can be variably controlled. The method according to claim 1,
A mounting portion on which the top frame can be mounted is formed at the one end of the seat frame,
Wherein the down frame is pivotally connected to the other end of the seat frame,
The top frame is moved toward the mounting portion and is mounted on the mounting portion, and the down frame rotates with respect to the other end portion of the seat frame so that the length of the top frame positioned between the head frame and the seat frame Adjustable bike frame with adjustable length. 3. The method of claim 2,
Wherein the mounting portion has a contact surface having a shape corresponding to a shape of a surface of the top frame,
Wherein the top frame is movable in a sliding manner along the contact surface of the stationary portion, whereby the length of the stationary frame is adjustable. 3. The method of claim 2,
Further comprising a fixing part connected to the seat frame, the top frame, and the down frame, and configured to stably fix the length of the top frame positioned between the head frame and the seat frame while maintaining a predetermined length, ,
The fixed portion
A moving part that moves along the top frame and can be fixed at a predetermined position;
A first connection part having one end connected to the moving part; And
And a second connecting portion, the other end of which is connected to the moving portion,
And the other end of the first connection portion is rotatably connected to the other end of the seat frame,
The one end of the second connection portion is rotatably connected to the down frame at a predetermined position so that even if the length of the top frame positioned between the head frame and the seat frame is variably adjusted, Wherein the length of the top frame located at the bottom of the frame is stably fixed while maintaining the predetermined length. 3. The method of claim 2,
The down-
A first cylinder having a first moving passage therein; And
And a first slide bar through which the other end can flow through the one end of the first cylinder and move through the first travel passage,
The other end of the first cylinder and the one end of the first slide bar are connected to the other end of the seat frame and the head frame, respectively, or the other end of the first cylinder and one end of the first slide bar The lower frame is rotatably connected to the other end of the seat frame by being connected to the head frame and the other end of the seat frame,
Wherein a length of the downward frame located between the head frame and the seat frame is varied by adjusting a length of the first slide bar introduced through the first movement path. 6. The method of claim 5,
Further comprising a fixing part connected to the seat frame, the top frame, and the down frame, and configured to stably fix the length of the top frame positioned between the head frame and the seat frame while maintaining a predetermined length, ,
The fixed portion
A moving part that moves along the top frame and can be fixed at a predetermined position;
A first connection part having one end connected to the moving part; And
And a second connecting portion, the other end of which is connected to the moving portion,
And the other end of the first connection portion is rotatably connected to the other end of the seat frame,
The one end of the second connection portion is rotatably connected to the down frame at a predetermined position so that even if the length of the top frame positioned between the head frame and the seat frame is variably adjusted, Wherein the length of the top frame located at the bottom of the frame is stably fixed while maintaining the predetermined length. The method according to claim 4 or 6,
The first connection part
A second cylinder having a second transfer passage therein; And
And a second slide bar through which the other end can flow through the one end of the second cylinder and move through the second travel passage,
The other end of the second cylinder and the one end of the second slide bar are respectively connected to the other end of the seat frame and the moving part or the other end of the second cylinder and one end of the first slide bar The one end of the first connecting portion and the other end of the first connecting portion are respectively connected to the moving portion and the other end of the seat frame by being connected to the moving portion and the other end portion of the seat frame,
And the length of the second slide bar introduced through the second movement path is adjusted so that the length of the top frame can be stably fixed while maintaining the predetermined length. 7. The method according to any one of claims 2 to 6,
The mounting portion includes a first mounting portion and a second mounting portion,
Wherein the top frame includes a first rod and a second rod disposed opposite each other,
Wherein the first mounting portion and the second mounting portion are formed to be substantially symmetrical to the surface of the one end portion of the seat frame,
One end of the first rod and one end of the second rod are respectively connected to the head frame,
The other end of the first rod and the other end of the second rod are disposed with the seat frame therebetween,
The other end of the first rod moves toward the first mounting portion and is mounted on the first mounting portion, and the other end of the second rod moves toward the second mounting portion, And the length of the top frame positioned between the head frame and the seat frame is variably adjusted. 9. The method of claim 8,
The first mounting portion and the second mounting portion each have a first contact surface and a second contact surface having a shape corresponding to the shape of the surface of the first rod and the shape of the surface of the second rod,
The first rod and the second rod are respectively moved in a sliding manner along the first contact surface of the first mounting portion and the second contact surface of the second mounting portion to thereby mount the first mounting portion and the second mounting portion on the first mounting portion and the second mounting portion, Bike frame can be adjusted in length. 9. The method of claim 8,
Further comprising a coupling portion connecting the other end of the first rod and the other end of the second rod,
Wherein the coupling portion prevents the top frame from being separated from the seat frame.
KR1020150098926A 2015-07-13 2015-07-13 length adjustable bicycle frame KR101759783B1 (en)

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