WO2016171497A1

WO2016171497A1 - Bicycle

Info

Publication number: WO2016171497A1
Application number: PCT/KR2016/004178
Authority: WO
Inventors: 김하늘
Original assignee: 김하늘
Priority date: 2015-04-21
Filing date: 2016-04-21
Publication date: 2016-10-27
Also published as: KR200479769Y1

Abstract

A bicycle according to an embodiment of the present invention comprises: a handle unit comprising a grip; a saddle unit comprising a saddle; a wheel unit; a pedal unit; and a one-body frame, to which the handle unit, the saddle unit, the wheel unit, and the pedal unit are coupled. At least one of the grip and the saddle has an air cushion unit formed thereon, the air cushion unit containing air, so as to absorb shocks applied to the rider and to provide comfort. The integrated frame secures robustness and stability such that not only a safe bicycle for two persons can be implemented, but, by selectively mounting a carriage support, a basket, a carrier, an infant saddle, etc., a bicycle can be obtained, which can be variously modified and used according to the purpose.

Description

bicycle

The present invention relates to a bicycle, and more particularly, the present invention relates to a bicycle which is not only secured and secured by an integrated frame, but also provides shock absorption and comfort by forming an air cushion portion in the saddle and grip.

In general, when riding a bicycle for a long time, the impact amount is transmitted to the body as it is due to friction with the road surface, thereby feeling a lot of fatigue.

As described above, the bicycle according to the prior art including the following prior art document is used to be equipped with various shock absorbers for shock absorbing to prevent the amount of shock transmitted to the occupant, but the weight of the bike increases due to the shock absorber. In addition, the structure is not only complicated, but also has an aesthetic problem.

An aspect of the present invention is to provide a bicycle in which an air cushion portion is formed in the saddle and the grip to absorb shock transmitted to the occupant and provide comfort.

Another aspect of the present invention is not only can be implemented as a safe two-seater bicycle, as the rigidity and stability is secured by the integrated frame, and also variously modified according to the purpose by selectively mounting the carrier, basket, carrier and infant saddle, etc. To provide a bicycle that can be used.

Bicycle according to an embodiment of the present invention comprises a handle part including a grip, a saddle part including a saddle, a wheel part, a pedal part, and a one-body frame in which the handle part, the saddle part, the wheel part and the pedal part are combined. As a bicycle comprising, at least one of the grip and the saddle is formed with an air cushion portion that accommodates air.

Further, in the bicycle, the saddle portion includes a first saddle portion and a second saddle portion respectively coupled to the one-body frame.

In addition, in the bicycle, the first saddle and the second saddle is a saddle, the saddle holder is coupled so that the saddle is detachable, respectively, one side is coupled to the saddle holder and the other side is coupled to the one-body frame Includes saddle support

In addition, the bicycle, the lock portion further comprises a lock portion mounted to the space portion between the saddle holder and the saddle support, the lock portion is coupled to the wire portion, one side of the wire portion is removable, the other side is detachable It includes a key box portion to be coupled.

Further, in the bicycle, the key box portion is provided with a number operation portion for operating the detachable coupling of the wire, and a button portion for controlling the entry and exit of the wire.

In addition, in the bicycle, the saddle is formed with an air cushion portion, the saddle is further formed with a pressure control unit for pressurizing the air in the air cushion portion.

In the bicycle, the handle part includes a handle bar coupled to the one-body frame and a grip into which the handle bar is inserted.

In the bicycle, the grip is provided with an air cushion portion, the grip is further formed with a pressure control unit for pressurizing the air in the air cushion portion.

The bicycle further includes an electric drive unit mounted to the one-body frame and including a motor unit for providing power to the wheel unit.

In the bicycle, the motor unit may include a gear unit, and the motor unit may include an oil inlet unit and an oil outlet unit for providing and extracting oil from the gear unit.

In the bicycle, the wheel part includes a front wheel and a rear wheel, the pedal part is coupled to the front gear, the rear wheel is coupled to the rear wheel, and the front gear and the rear gear are wound with a chain. At least two or more chainrings are formed, the chain further comprises a shift guide for moving the chainring winding.

In addition, in the bicycle, the saddle portion is formed with an air pocket portion and the receiving portion, the door is formed to open and close the receiving portion.

The bicycle further includes at least one of a carrier, a basket, a carrier, and a saddle for infants coupled to the one-body frame.

In the bicycle, the saddle portion may include a first saddle portion and a second saddle portion respectively coupled to the one-body frame, and the saddle-shaped carrier or a saddle-shaped basket may be coupled to the second saddle portion.

In the bicycle, the saddle portion includes a first saddle portion and a second saddle portion respectively coupled to the one body frame, and a bag hanger portion is formed in the one body frame between the first saddle portion and the second saddle portion. The guide member is coupled to a predetermined region of the one-body frame to which the wheel unit is coupled, and the guide member is rotatably mounted to the one-body frame to be positioned between the bag and the wheel unit coupled to the bag hanger unit.

According to the present invention, as the air cushion portion is formed, absorbs the shock transmitted to the occupant, comfort is provided, and as the rigidity and stability are ensured by the integrated frame, not only can be implemented as a safe two-person bicycle, By selectively mounting a basket, a carrier, and a saddle for infants, a bicycle can be obtained by various modifications according to the purpose.

1 is a front view schematically showing a bicycle according to a first embodiment of the present invention.

Figure 2a schematically shows a saddle according to an embodiment of the bicycle shown in Figure 1, a schematic flat view.

2B schematically illustrates a saddle according to an embodiment of the bicycle illustrated in FIG. 1, and is a schematic cross-sectional view.

Figure 3a is a plan view schematically showing a grip according to an embodiment of the bicycle shown in FIG.

3B is a schematic cross-sectional view of a grip according to one embodiment of the bicycle shown in FIG. 1;

Figure 4 is a cross-sectional view schematically showing a saddle according to another embodiment of the bicycle shown in FIG.

5 is a cross-sectional view schematically showing a grip according to another embodiment of the bicycle shown in FIG.

6 is a configuration diagram schematically showing a lock unit in the bicycle shown in FIG. 1.

7 is a schematic use state diagram of the lock unit shown in FIG.

8 is a front view schematically showing a bicycle according to a second embodiment of the present invention.

9 is a front view schematically showing a gearbox in the bicycle shown in FIG.

10 is a front view schematically showing a bicycle according to a third embodiment of the present invention.

11 is a configuration diagram schematically showing a gear unit in the bicycle shown in FIG. 10.

12 is a front view schematically showing a bicycle according to a fourth embodiment of the present invention.

FIG. 13 is a schematic partial sectional view of the bicycle shown in FIG. 12; FIG.

14 is a schematic use state diagram of the bicycle shown in FIG.

15 is a front view schematically showing a bicycle according to a fifth embodiment of the present invention.

16 is a front view schematically showing a bicycle according to a fifth embodiment of the present invention.

17 is a front view schematically showing a bicycle according to a fifth embodiment of the present invention.

18 is a front view schematically showing a bicycle according to a fifth embodiment of the present invention.

19 is a front view schematically showing a bicycle according to a fifth embodiment of the present invention.

20 is a front view schematically showing a bicycle according to a fifth embodiment of the present invention.

21A and 21B are schematic use state diagrams of the guide bar in the bicycle shown in FIG. 20;

Advantages and features of the present invention, and methods for achieving them will be apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosure may be made thorough and complete, and fully conveyed to those skilled in the art. In the drawings, the thicknesses of layers and regions are exaggerated for clarity.

Terms such as first and second may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly the second component may be referred to as the first component.

The terms top, bottom, top, bottom, or top, bottom, etc. are used to distinguish relative positions in the component. For example, in the case of naming the upper part on the drawing as the upper part and the lower part on the drawing for convenience, the upper part may be called the lower part and the lower part may be named the upper part without departing from the scope of the present invention. .

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

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

1 is a front view schematically showing a bicycle according to a first embodiment of the present invention, Figure 2a schematically shows a saddle according to an embodiment of the bicycle shown in Figure 1, a schematic flat view 2B schematically illustrates a saddle according to an embodiment of the bicycle illustrated in FIG. 1, and is a schematic cross-sectional view. FIG. 3A illustrates a grip according to an embodiment of the bicycle illustrated in FIG. 1. 3B is a schematic plan view, and FIG. 3B is a schematic cross-sectional view of a grip according to one embodiment of the bicycle shown in FIG. 1.

As shown, the bicycle 100 is one-body frame 110, the handle portion 120, the first saddle 130, the second saddle 140 so as to ensure the robustness and safety even if implemented for two people , A wheel unit 150 and a pedal unit 170.

In addition, the first saddle 130 and the second saddle 140 includes

saddles

131 and 141, saddle holders 132 and 142, and saddle supports 133 and 143, respectively.

The

saddles

131 and 141 are formed with

air cushions

131a and 141a, respectively. The

air cushions

131a and 141a may be formed in predetermined areas of the saddle where the hips reach the ones to alleviate vibrations or external shocks transmitted from the road surface of the bicycle and to provide a comfortable ride.

In addition, one side of the saddle support (133,134) is coupled to the saddle holder (132,142) and the other side is coupled to the one body frame (110).

In addition, the

saddles

131 and 141 may be coupled to the saddle holders 132 and 142 to be detachable.

In addition, the one-body frame 110 is composed of a single body.

Next, the handle part 120 includes a handle bar 121 and a grip 122. The handle bar 121 is coupled to the one body frame 110, and the grip 122 is coupled to the handle bar 121.

In addition, the grip 122 may be inserted into the handle bar 121, and the air cushion portion 121a is formed. In addition, the air cushion unit 122a may be formed in a predetermined area of the grip that the palm touches to alleviate vibration or external shock transmitted from the road surface of the bicycle and to provide a comfortable ride when driving for a long time.

Next, the wheel unit 150 is rotatably coupled to the one body frame 110.

In addition, the one body frame 110 is the first saddle 130 and the second saddle 140 is coupled, the handle portion 120 is coupled, the wheel portion 150 and the pedal unit 170 Is formed into one frame so as to be combined.

4 is a cross-sectional view schematically illustrating a saddle according to another embodiment of the bicycle illustrated in FIG. 1. As illustrated, the saddles 131 ′ and 141 ′ are formed with air cushions 131 a ′ and 141 a ′, and the pressure control units 134 b ′ and 144 b ′ with the air cushions 131 a ′ and 141 a ′. Is connected. The pressure control unit (131b ', 141b') is to adjust the hardness of the air cushion portion formed in the saddle (131 ', 141') by pressing the air in the air cushion (131a ', 141a'), It can be implemented in various ways such as the operation unit and the piston unit.

5 is a cross-sectional view schematically showing a grip according to another embodiment of the bicycle shown in FIG. 1. As shown, the grip 122 'is formed with an air cushion portion 122a', and the pressure adjusting portion 122b 'is coupled to the air cushion portion 122a'. The pressure adjusting part 122b 'is to adjust the hardness of the air cushion part formed on the grip 122' by pressurizing the air in the air cushion part 122a ', and the screw manipulation part, the piston part, the air pumping part, etc. It can be implemented in various ways.

FIG. 6 is a diagram schematically illustrating a lock unit in the bicycle illustrated in FIG. 1, and FIG. 7 is a schematic view illustrating a state of use of the lock unit illustrated in FIG. 6. As shown, the lock 160 is selectively mounted on the saddle holder 132 or the saddle holder 142, and is embedded in the space between the saddle holders 132 and 142 and the saddle holders 133 and 143.

More specifically, the lock portion 160 includes a wire portion 161 and the key box portion 162. The wire part 161 includes a wire 161a and a mounting member 161b, one side of the wire 161a is coupled to the key box part 162 so as to be able to enter and exit, and the other side of the key box part ( Mounting member (161b) is coupled to the end to be detachably coupled to 162.

That is, the wire 161a is drawn out from the key box part 162 by pulling the other side in a state where one side is inserted into the key box part 162, and then passes through a fixing bar or a bicycle wheel, The mounting member 161b is coupled to the key box portion 162.

In addition, a number manipulation unit 162a may be formed in the key box unit 162, and a button unit 162b may be formed to control the drawing of the wire 161a. In addition, the button unit 162b is for limiting free drawing of the wire by pressing the drawn wire and can be easily implemented by those skilled in the art.

8 is a schematic front view of a bicycle according to a second exemplary embodiment of the present invention. As illustrated, the bicycle 200 further includes an electric drive unit as compared to the bicycle 100 according to the first embodiment shown in FIG. 1.

More specifically, the bicycle 200, the one-body frame 210, the handle portion 220, the first saddle 230, the second saddle 240, the wheel portion 250, the pedal portion 260 and The motor unit 270 and the gear box 280 is included.

In addition, as shown in FIG. 9, the gear box 280 coupled to the wheel is provided with an oil inlet 281 and an oil outlet 282 to enable oil exchange.

As described above, the bicycle 200 according to the second embodiment of the present invention can not only improve the lifespan of the electric drive unit but also stably use it without failure.

In addition, the bicycle 200 includes an automatic shift and a manual shift of the electric drive unit. In addition, the electric drive unit automatically implements the shift through output control.

And, as shown in Table 1 below, by controlling the automatic transmission to the manual transmission through the output control it is possible to implement the shift more efficiently.

자동변속Automatic transmission	수동변속Manual shift	출력제어Output control
1One	1One	150W150 W
22	22	175W175 W
33	33	200W200 W
44	44	225W225 W
55	55	250W250 W
66	66	275W275 W
77	77	300W300 W
88	88	325W325 W
99	99	350W350 W

In addition, the detailed technical configuration of the bicycle 200 is omitted as described above through the bicycle (100).

FIG. 10 is a front view schematically showing a bicycle according to a third embodiment of the present invention, and FIG. 11 is a configuration diagram schematically showing a gear unit in the bicycle shown in FIG. 10. As illustrated, the bicycle 300 is a pixie gear-type bicycle in which only the gear part is different from the bicycle 100 according to the first embodiment illustrated in FIG. 1.

The bicycle 300 includes a one body frame 310, a handle part 320, a first saddle part 330, a second saddle part 340, a wheel part 350, and a pedal part 360. In addition, the wheel unit 350 includes a front wheel 350a and a rear wheel 350b, and the front gear 351 is coupled to the pedal unit 360, and the rear gear coupled to the rear wheel 350b. 352.

In addition, the front gear 351 is formed with at least two or more chainrings, the rear gear 362 is formed with at least two or more chainrings. In addition, the pedal unit 360 includes a shift guide part 361 for moving the chain of the front gear 351. The shift guide part 361 is for moving the wound chain of the front gear to a chain ring having a different radius. To this end, the guide part 353 includes a guide plate 361a for pressing the chain and an operation plate 361b for manipulating the movement of the shift guide part 361.

In addition, the detailed technical configuration of the bicycle 300 is omitted as described above through the bicycle (100).

In this way, as the user stops and lowers the bicycle in order to shift the gear while driving the bicycle, the operation panel 361b may be operated to shift gears, thereby eliminating the need for a separate transmission, and thus may be light and simple.

12 is a front view schematically showing a bicycle according to a fourth embodiment of the present invention, FIG. 13 is a schematic partial sectional view of the bicycle shown in FIG. 12, and FIG. 14 is a schematic use of the bicycle shown in FIG. State diagram. In addition, the bicycle 400 is made of an electric bicycle.

As illustrated, the bicycle 400 includes a one body frame 410, a handle part 420, a saddle part 430, a wheel part 440, and a pedal part 450.

More specifically, the saddle 430 has an air pocket 431 is formed, an accommodating part 432 is formed therein, and a door 433 for opening and closing the accommodating part 432 is formed.

In addition, the accommodating part 432 may include a battery 434 for operating the electric driving part.

In addition, the detailed technical configuration of the bicycle 400 is omitted as described above through the bicycle (100).

As such, the battery, which is mounted on a conventional frame or the like, is stored in the saddle to prevent breakage of the battery and can be implemented more safely and conveniently.

15 is a front view schematically showing a bicycle according to a fifth embodiment of the present invention. As shown, the bicycle 500 is different from the saddle only in comparison with the bicycle 100 illustrated in FIG. 1.

As illustrated, the bicycle 500 includes a one body frame 510, a handle part 520, a saddle part 530, a wheel part 540, a pedal part 550, and a carrier part 560.

In addition, the detailed technical configuration of the bicycle 500 is omitted as described above through the bicycle (100).

In addition, the bearing unit 560 is coupled to the one-body frame 510 is maintained firm, it can efficiently load or transport the heavy load.

16 is a front view schematically showing a bicycle according to a fifth embodiment of the present invention. As shown, the bicycle 600 has a different saddle compared to the bicycle 100 illustrated in FIG. 1.

As illustrated, the bicycle 600 includes a one body frame 610, a handle part 620, a saddle part 630, a wheel part 640, a pedal part 650, and a carrier part 660.

In addition, as the carrier part 660 is coupled to the one-body frame 610, the strength and stability are maintained to load or transport the load more efficiently.

17 is a front view schematically showing a bicycle according to a fifth embodiment of the present invention. As shown, the bicycle 700 further comprises a saddle-shaped carrier compared to the bicycle 100 shown in FIG.

As shown, the bicycle 700 is a one-body frame 710, the handle portion 720, the first saddle 730, the second saddle 740, the wheel portion 750, the pedal portion 760 And a saddle carrier 770.

In addition, the saddle-shaped carrier 770 is coupled to the second saddle 740 coupled to the one-body frame 710.

In addition, the detailed technical configuration of the bicycle 700 is omitted as described above through the bicycle (100).

According to the above, it is possible to implement the two-person bicycle that maintains the robustness and stability and at the same time can be efficiently carried and transported by the saddle-shaped carrier.

18 is a front view schematically showing a bicycle according to a fifth embodiment of the present invention. As shown, the bicycle 800 further comprises a saddle basket compared with the bicycle 100 shown in FIG.

More specifically, the bicycle 800, the one-body frame 810, the handle portion 820, the first saddle 830, the second saddle 840, the wheel portion 850, the pedal portion 860 and Saddle basket 870 is included.

In addition, the saddle-shaped basket 870 is made of a basket shape coupled to the wire, is coupled to the second saddle 840 is coupled to the one-body frame 810.

In addition, the detailed technical configuration of the bicycle 800 is omitted as described above through the bicycle (100).

As described above, it is implemented as a two-seater bicycle that maintains the robustness and stability and at the same time can be efficiently carried and transported by the saddle basket.

19 is a schematic front view of a bicycle according to a fifth exemplary embodiment of the present invention. As shown, the bicycle 900 is different only in the saddle compared to the bicycle 100 shown in FIG.

As illustrated, the bicycle 900 includes a one-body frame 910, a handle part 920, a saddle part 930, a saddle part for a child 940, a wheel part 950, and a pedal part 960. .

In addition, the infant saddle 940 is coupled to the one-body frame 910.

As described above, as the infant saddle 940 is coupled to and supported by the one-body frame 910, the rigidity may be maintained to safely burn the infant.

20 is a front view schematically showing a bicycle according to a fifth embodiment of the present invention, Figure 21a, 21b is a schematic use state of the guide bar in the bicycle shown in Figure 20.

As shown, the bicycle 1000 is different from the one body frame in comparison with the bicycle 100 shown in FIG.

As illustrated, the bicycle 1000 includes a one-body frame 1010, a handle part 1020, a first saddle part 1030, a second saddle part 1040, a wheel part 1050, and a pedal part 1060. It includes.

In addition, a bag hanger 1070 is formed on the one-body frame 1010. That is, the bag hanger 1070 is formed in the one-body frame 1010 between the first saddle 1030 and the second saddle 1040.

In addition, the guide member 1071 is rotatably coupled to a predetermined region of the one-body frame 1010 to which the wheel unit 1050 is coupled. In addition, the guide member 1071 is rotatably mounted to the one-body frame so as to be located between the bag and the wheel portion coupled to the bag hanger 1070.

In addition, the guide member 1071 is coupled to the one-body frame 1010 by a hinge portion 1072, and at least one side of the guide member 1071 may include a first fixing groove 1073 and a second fixing groove. A second fixing protrusion 1012 is formed in the one body frame 1010 and corresponds to the first fixing groove 1073 and corresponds to the first fixing protrusion 1011 and the second fixing groove 1074. ) Are spaced apart from each other. That is, the first fixing protrusion 1011 is formed on the one-body frame 1010 on the second saddle portion 1040 side, and the second fixing protrusion 1012 is the circle on the first saddle portion 1030 side. It is formed in the body frame 1010.

In this way, the guide member 1071 may be fixed by coupling the first fixing groove 1073 to the first fixing protrusion 1011 when not in use, and the second fixing groove 1074 may be fixed when in use. It can be used more stably by coupling to the second fixing protrusion 1012.

As described above, the bag hanger 1070 can be used to hang the bag more easily, and the bag can be prevented from coming into contact with the wheels by the guide member 1071.

As mentioned above, although an exemplary embodiment of the present invention has been described with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may realize the present invention in another specific form without changing its technical spirit or essential features. It will be appreciated that it may be practiced. Therefore, it should be understood that one embodiment described above is illustrative in all respects and not restrictive.

Claims

A bicycle comprising a handle part including a grip, a saddle part including a saddle, a wheel part, a pedal part, and a one body frame to which the handle part, the saddle part, the wheel part, and the pedal part are coupled,

At least one of the grip and the saddle bicycle is formed with an air cushion unit that accommodates air.
The method according to claim 1,

The saddle comprises a first saddle and a second saddle respectively coupled to the one-body frame.
The method according to claim 2,

Each of the first saddle and the second saddle includes a saddle, a saddle holder to which the saddle is detachably coupled, and a saddle support having one side coupled to the saddle holder and the other side coupled to the one-body frame.
The method according to claim 3,

Further comprising a lock portion mounted to the space portion between the saddle holder and the saddle support,

The lock unit is a bicycle comprising a key box portion is coupled to the wire portion, one side of the wire portion is retractable, the other side is detachably coupled.
The method according to claim 4,

The key box unit is a bicycle having a number operation unit for operating the detachable coupling of the wire, and a button unit for controlling the entry and exit of the wire.
The method according to claim 1,

The saddle is formed in the air cushion portion, the saddle is further provided with a pressure control unit for pressing the air in the air cushion portion.
The method according to claim 1,

And the handle part includes a handle bar coupled to the one-body frame and a grip into which the handle bar is coupled.
The method according to claim 1,

The grip is formed with an air cushion, the grip is further formed with a pressure control unit for pressurizing the air in the air cushion.
The method according to claim 1,

And an electric drive unit mounted to the one-body frame and including a motor unit for providing power to the wheel unit.
The method according to claim 9,

The motor unit includes a gearbox, wherein the gearbox is provided with an oil inlet and an oil outlet for providing and extracting oil.
The method according to claim 1,

The wheel portion includes a front wheel and a rear wheel,

A front gear is coupled to the pedal unit, a rear gear is coupled to the rear wheel, and the front gear and the rear gear are formed with at least two chainrings on which the chain is wound, and the chain ring is moved. The bicycle further comprises a shift guide unit for letting.
The method according to claim 1 or 9,

The saddle portion is formed with an air pocket portion and the receiving portion, the bicycle having a door for opening and closing the receiving portion.
The method according to claim 1,

A bicycle further comprising at least one of a carrier, a basket, a carrier and a baby saddle coupled to the one-body frame.
The method according to claim 1,

The saddle portion includes a first saddle portion and a second saddle portion respectively coupled to the one-body frame, and the second saddle portion is a bicycle with a saddle-shaped carrier or a saddle-shaped basket.
The method according to claim 1,

The saddle part includes a first saddle part and a second saddle part respectively coupled to the one-body frame, and a bag hanger part is formed in the one-body frame between the first and second saddle parts, and the wheel part is coupled. A guide member is coupled to a predetermined region of the one-body frame, and the guide member is pivotally mounted to the one-body frame such that the guide member is positioned between the bag and the wheel portion coupled to the bag hanger.