JP5062515B2 - Folding bike - Google Patents

Description

The present invention relates to a folding method that allows convenient use of a folding bicycle.

Conventionally, there are various folding bicycles, and the main feature is compact storage. These can be broadly divided into those that have a function of being capable of being pulled and moved by a person using the wheels attached to the main body (wheels for traveling and wheels dedicated for towing) in the folded state.

By the way, it is a type that has a function that can be towed in one folded state, which is roughly classified, but the function is appealing as a feature point, but it has stable running characteristics and good towed movement in the folded state. There were few things that made it easy to use. This is because the main value of the foldable bicycle is compact storage and storage due to compactness when it is folded, and movement by loading on a car or train, etc. Because there is no. For example, a dedicated handle that facilitates towing is not provided, and the user has a part of the main body frame or a part of the handle as a temporary handle. In addition, the weight balance at the time of towing was not taken into consideration and the load applied to the hand was not light because the center of gravity was high. And since compactness was prioritized, the width between the wheels used for towing was narrow, and it was unstable to tow, and it was necessary to pay attention to whether both hands were always applied or toppling over. This has hindered the development of effective use of folding bicycles, which are the most convenient and convenient means of transportation and have high convenience of being towable. Accordingly, an object of the present invention is to provide a bicycle and a bicycle folding method that can solve the above-described problems and can be easily folded by a user and that can perform stable traction movement and independence in the above-described state.

According to the first aspect of the present invention, one end of the auxiliary frame that supports the handle frame so as to be vertically rotatable toward the auxiliary frame is pivotally attached to the lower portion of the handle frame that rotatably supports the handle shaft, and is attached to the upper end of the handle shaft. Is mounted with a mount that has a mating part that is paired with a detachable mechanism that connects and fixes the handle shaft provided at the front end or front part of the main body frame so as to be able to steer and rotate. It is pivotally installed so that it can be rotated and arranged so that it is grounded at the same position with an interval width that is stable when towing the rear wheel to the rear wheel side, and a stand for self-supporting is installed at the rear of the main body frame that supports the rear wheel Is provided. With the above configuration, when folding the connection release, the front wheel, the rear wheel, and the stand are supported at three points and become independent. Further, the folding bicycle is characterized in that a handle is provided at the front of the main body frame for traction movement. In claim 1, an auxiliary frame is provided between the handle frame and the main body frame, and the respective parts are connected by the above-described method. Therefore, the frame has a triangular configuration, and the frame rigidity during traveling is ensured. Then, when folded, the triangular structure is broken by releasing the connection between the upper end of the handle shaft, which is one connection part of the triangular structure frame, and the attaching / detaching mechanism part of the main body frame, and the handle frame attached with the front wheel and the handlebar is connected by the shaft connection. The attached tilted handle frame can be rotated to the rear wheel side of the main body frame by the auxiliary frame which is tilted toward the holding auxiliary frame and is pivotally attached to one end of the main body frame. As a result, the components related to traveling steering at the front part gather at the rear part of the main body frame, and the center of gravity moves downward when towing. Accordingly, the user can stably pull with one hand without receiving all of the vehicle weight and with the pulling movement handle provided at the front of the main body frame. And, the stand for self-supporting enables a small space upright self-supporting.

According to a second aspect of the present invention, when the saddle is released together with the saddle frame from the saddle frame holding portion installed in the main body frame, the saddle is inclined with respect to the main body frame between the front wheel and the rear wheel that are rotated by the auxiliary frame. It is installed in a structure that is positioned backwards. In the second aspect, the saddle and the saddle frame, as in the first aspect, in order to shift the center of gravity downward as much as possible during folding towing, in the conventional saddle rear-end bicycle, the fall that was up to the rear wheel, Next to the rear wheel, it is tilted down with respect to the main body frame. Thereby, coupled with claim 1, further stable traction and upright independence are enabled.

According to a third aspect of the present invention, when the front wheel and the rear wheel are arranged so as to be in contact with the ground at the same position at an interval width that is stabilized by the auxiliary frame, An interval maintaining auxiliary frame for connecting and fixing the handle frame is provided. In claim 3, in order to compensate for a lack of positional relationship maintenance force between the front wheel and the rear wheel which are rotationally moved to the rear wheel side when folded by only one end pivotally installed on the main body frame of the auxiliary frame in claim 1. The distance maintaining auxiliary frame is provided on the main body frame or the handle frame side, and the frame structure is maintained and strengthened by connecting and fixing each other. Thus, stable towing is possible even when the single unit or the small package is loaded.

According to a fourth aspect of the present invention, a handlebar one end portion is rotatably held and fixed to a mount fixedly installed on the upper end of the handleshaft, and a handlebar holding portion which can also be rotated and fixed to the mount is provided. . According to a fourth aspect of the present invention, the handlebar holding portion having the above-mentioned structure is provided on the left and right sides of the mount of the first aspect, and the handlebar portion is folded in two stages, thereby folding the handle frame portion to which the front wheel and the handlebar are attached. We are trying to make it more compact. At this time, the left and right brake levers and grips are located beside the front wheels, resulting in a low center of gravity during towing.

According to the fifth aspect of the present invention, when folded by the frame structure and folding method of the present invention, a virtual planar space is formed by the main body frame, the handle frame, the auxiliary frame, and the spacing maintaining auxiliary frame, The space can be loaded into the space by bundling with the component frame. In addition, dedicated carrier shelves, baskets, back cases, etc. can be installed in a simple manner as loading aids. In claim 5, by the folding method of claim 1, claim 2, claim 3 or claim 4, the projecting components such as the handle frame and saddle which are in the conventional system on the surface side in the folded state And a virtual planar space is formed by each frame. As a result, the user can load small packages using the space. In order to enable easier loading, dedicated carrier shelves and baskets can be installed in a simple manner.

According to a sixth aspect of the present invention, a companion portion that is paired with the attachment / detachment mechanism portion provided at the front portion of the main body frame of the first aspect is provided on the upper side surface of the handle frame. In claim 6, the mount fixed to the upper end of the handle shaft in claim 1 is provided with a companion part to the attachment / detachment mechanism part of the main body frame. In this claim, the companion part is provided on the upper side surface of the handle frame. This also shows that the same frame configuration and folding method as in claim 1 are possible.

According to the seventh aspect of the present invention, by providing an intermediate rotation shaft in the auxiliary frame, the front wheel and the rear wheel can face each other in parallel so as to contact the ground at the same position at a certain interval width. According to a seventh aspect of the present invention, the auxiliary frame is divided into two at the intermediate portion of the auxiliary frame of the first aspect, and a rotation shaft portion that can be rotated by shaft joining is provided so that the front and rear wheels face each other in parallel when folded. . This enables towing with less resistance.

The pulling movement handle is formed or installed at the front end of the main body frame, and the attachment / detachment mechanism between the handle shaft and the main body frame is installed behind the handle. In claim 8, the positional relationship between the attaching / detaching mechanism portion installed at the front end or front portion of the main body frame in claim 1 and the pulling handle installed at the rear portion is reversed, and the pulling handle is installed at the front end. In addition, an attaching / detaching mechanism portion is provided at the rear portion thereof. Accordingly, the pulling handle can also serve as an auxiliary handle for facilitating the operation when the user lifts the front part of the main body frame when folding according to the method of the present invention. Further, since the handle is in the foremost position during towing, there are no other protrusions that come into contact with the user's body during towing.

According to a ninth aspect of the present invention, there is provided a front end portion of the front main body frame of the main body frame divided by the main body frame folding joint portion. A handle frame angle maintaining auxiliary frame is provided for maintaining an angle between the ground and the handle set during traveling, and one end of the maintaining auxiliary frame is an upper end of the handle shaft according to claim 1 or an upper portion of the handle frame according to claim 6. It is installed on the side by a holding tool, and one end is pivotally mounted on the rear part of the front main body frame. In claim 9, in order to replace the function of the auxiliary frame of claim 1 with the front body frame divided forward and backward by the folding joint portion, the handle frame angle maintaining auxiliary frame having the folding structure is replaced with the upper end of the handle shaft and the front body frame. Between the two ends, the two ends are connected by a rotating shaft. As a result, the folding method and state as the basis of claim 1 are also effective in claim 9.

In the invention of claim 10, a saddle having a handle for pulling at the time of folding is provided on the saddle post by a pivot joint lock structure by a shaft, and the saddle post can be locked to the saddle frame in a sliding manner. The saddle frame is installed on the rear body frame by a saddle frame holding base having a pivot joint locking structure by a shaft or by itself with the pivot locking structure. At the time of folding, the saddle is forwardly fixed to the rear main body frame by the saddle frame holding base, and the saddle front is pivoted upward by a shaft joint with the saddle post and fixed by the lock structure. Thereby, the handle provided on the lower surface of the front portion of the saddle serves as a pull handle for towing. In claim 10, when the auxiliary frame function of claim 1 according to claim 9 is replaced with the front main body frame, the pulling handle installed at the front of the main body frame in claim 1 is not to be installed originally. The main body frame is rotated and arranged to the rear wheel side together with the handle frame to which the front wheel, the handlebar, and the like are attached due to the above-described folding joint. Therefore, in claim 2, the saddle and the saddle frame are tilted back between the front wheel and the rear wheel. However, in this section, a pulling handle is installed on the lower surface of the front portion of the saddle, and the saddle frame and the reverse direction are the same. The saddle frame is fixed to the main body frame by a lock structure, and the handle is pulled by rotating the saddle upward about the joint with the saddle post.

As described above, according to the present invention, the following excellent effects are brought about.
(A) Since the front and rear wheels for traveling are used for the towing wheels when folded, the tube has a large diameter and sufficient cushioning properties with a tube compared to the conventional type that uses a small auxiliary wheel exclusively for towing. It is quiet and smooth with little towing noise due to unevenness of the ground surface, and it absorbs contact shocks beyond the steps such as stairs and can be pulled comfortably in combination with a large diameter. In addition, easy and stable traction is possible due to the dedicated handle and wide wheel spacing.
(B) At the time of folding, the three-point support and the low center of gravity of the wide wheel interval width by the front and rear wheels and the low center of gravity enable stable upright independence in a small space.
(C) At the time of folding, a space that is not present in conventional folding bicycles is formed on the surface by the body frame, handle frame, auxiliary frame, etc. This makes it possible to provide more convenient and new ways of using bicycles and cycling styles.
(D) Using a simple folding method that is different from the conventional type, the component frame and components are concentrated and moved to the rear wheel side, which is the lower part when towing. Provide a light, light and stable traction without burdening the entire load.
(E) While taking a unique shape different from that of conventional folding bicycles when folded, the running frame has sufficient rigidity because it has a three-point support frame structure consisting of the main body frame, handle frame, and auxiliary frame. .

Embodiments of the present invention will be described below with reference to the drawings. The embodiment described with reference to the drawings is a preferred embodiment of the present invention, and therefore, unless there is a description that the detailed portions such as each connecting portion and rotating shaft structure are particularly limited, these embodiments are described. It is not limited to. Further, in FIG. 1, the present invention will be described by taking a chain drive type as an example, but the drive system may be a belt drive type or a shaft drive type of FIG. And since the present invention is a form and a folding method for stable traction and self-supporting by lowering the center of gravity by concentrating each component downward during folding, the component and the motor and power battery which are currently being miniaturized It can also be applied to a bicycle with an electric assist function to which is added. Moreover, it is applicable also to the bicycle which equips the holding frame of a front wheel and a rear wheel with a suspension function.

FIG. 1 shows an overall appearance configuration in a traveling state when the preferred embodiment of the present invention is carried out. The bicycle shown in FIG. 1 has left and right handlebars 9a and 9b, and grips 10a and 10b and front and rear wheel brake levers, respectively. In this figure, although it is not a transmission specification, in the case of a transmission specification, a shift switching device is provided in one of the handlebars 9a and 9b. The left and right handlebars 9a and 9b are placed on the left and right sides of the mount 6 by contrast by handlebar holding portions 5a and 5b that hold the handlebars so that they can be rotated and fixed.

The handle bar holding portions 5a and 5b installed on the left and right sides of the mount 6 are fixed to the left and right sides of the rotation shaft penetrating the mount 6 so that the handle bars 9a and 9b can be simultaneously rotated vertically while holding the handle bars 9a and 9b. It can be fixed at a fixed position when traveling and folding the handle by a handle fixing release lever 7 at one end of the shaft. On the surface of the mount 6, a detachable biconvex shaft 8 that is held and fixed when connected to the detachable mechanism 11 at the front end of the main body frame 14 is installed on the extended line of the handle shaft 30. The mount 6 is fixedly installed at the upper end of the handle shaft 30.

The detachable biconvex convex shaft portion 8 has a structure shown in the conceptual cross-sectional view of the coupling mechanism portion in FIG. 3, and the fastening piece receiver 32 freely rotates separately from the handle shaft 30 by a bearing ball 33. Therefore, even if the fastening piece 35 of the attachment / detachment mechanism 11 of the main body frame 14 is operated by the connection release lever 12 and the fastening piece receiver 32 is fixed, the rotation of the mount 6 and the handle shaft 30 is not affected and the steering of the handle is possible. It is.

The handle shaft 30 having the mount 6 fixedly installed at the upper end is rotatably supported inside the handle frame 1 and is connected and fixed to a front wheel holding frame that supports the front wheel.

At the front end of the main body frame 14, there is an attaching / detaching mechanism portion 11 for holding and fixing the attaching / detaching opposite convex shaft portion 8 which is a connecting portion with the main body frame 14 installed on the mount 6 of the handle set A and its connection release lever 12. is set up. In addition, a pull handle 13, an auxiliary frame 18, a saddle 19, pedals 29 a and 29 b, a drive chain 28, a rear wheel 26, a self-supporting stand 25, a distance maintaining auxiliary frame 24, a side stand 27 and the like are provided.

The auxiliary frame 18 is installed on the auxiliary frame fixing base 15 of the main body frame 14 so that one end of the auxiliary frame 18 moves three-dimensionally in two directions along two axes, and the other end is a handle frame as shown in FIGS. 1, the handle frame 1 is installed on the vertical rotation shaft 3 of the handle frame holding portion 2 so that the handle frame 1 can be rotated vertically to the auxiliary frame 18 side. The auxiliary frame 18 has a two-frame shape from the middle as a suitable example so that the handle frame 1 can be tilted to the same position as the auxiliary frame 18, but may be a single cantilever type as a shape not shown. . The tilted handle frame 1 is fixed at the same position by a lock structure (not shown).

The pull handle 13 is installed on the front side of the main body frame 14 and is used as in the pull image shown in FIG. As shown in FIGS. 7, 8, and 9, a movable handle is formed by a structure (not shown), but a fixed handle may be used as in FIG. 1.

The saddle 19 is composed of a saddle post 20 and a saddle frame 21, and is installed by a lower base portion of the saddle frame 21 being supported by a saddle frame holding portion 22 installed on the main body frame 14. The lower base portion held inside the saddle frame holding portion 22 of the saddle frame 21 has a structure not shown and has a retaining portion at the lower end, and is connected by a rotating shaft so as to be bent like a joint. As a result, the saddle frame fixing release lever 23 in the saddle frame holding portion 22 is loosened, and the saddle 19 is shown in FIG. 4 without being pulled out even if the saddle frame 21 is pulled upward from the saddle frame holding portion 22 and the joint portion is exposed to the surface. In this manner, the saddle post 20 and the saddle frame 21 can be tilted backward at an angle with respect to the main body frame 14 to the side of the rear wheel 26. At this time, the saddle 19 is folded forward and downward along the saddle post 20 by a fixed shaft structure with the saddle post 20.

At the rear part of the main body frame 14, a self-supporting stand 25 is provided for self-supporting in the folded state shown in FIGS. 7, 8, and 9. The stand 25 for self-supporting is supported at three points by the rear wheel 26 and the front wheel 4 that is rotated and arranged beside the rear wheel 26 so that the rear wheel 26 and the auxiliary frame 18 are grounded to the ground at the same position at a distance that is stable when towed. Enables stable independence when folded. Moreover, the stand 25 for self-supporting may be formed with the main body frame 14, and may be provided as another component.

The interval maintaining auxiliary frame 24 is installed at the rear part of the main body frame 14 so as to be rotatable about one end of the shaft, and is installed on the handle frame 1 of the handle set A brought close to the rear wheel 26 when folded, and is not shown. It is connected and fixed to the holding lock part. Thereby, the wheel space | interval of the front wheel 4 and the rear wheel 26 at the time of towing is kept constant, and enables stable towing. It also plays a role of reinforcing the rigidity of the frame structure in the folded state at the same time.

4 and 5 are conceptual diagrams of a bicycle folding procedure according to the present invention. In (1), the handle fixing release lever 7 on the handlebar holding part 5a on one side is loosened, and both handlebars 9a and 9b are rotated inward. In (2), the main body frame 14 is rotated in the vertical direction so that the grips 10a and 10b come to the side of the front wheel 4, and the handle fixing release lever 7 is tightened and fixed this time. In step (3), the front side of the saddle 19 is tilted downward along the saddle post 20. In step (4), the saddle frame fixing release lever 23 is loosened, the saddle frame 21 is pulled up from the saddle frame holding portion 24, and the above-described joint portion is exposed to the outside so that the saddle frame 21 comes to the side of the rear wheel 26. Defeat. In step (5), the release lever 12 releases the connection between the attachment / detachment opposite convex shaft portion 8 of the mount 6 of the handle set A and the attachment / detachment mechanism portion 11 of the main body frame 14 folded in the steps (1) and (2). In (6), the handle set A in which only the handle frame holding part 2 is supported only by the auxiliary frame 18 is tilted toward the auxiliary frame 18 as shown in FIG. 2, and is fixed by a lock structure (not shown). The handle set A is moved to the rear wheel 26 side by the auxiliary frame 18 as in the rotational movement path diagram shown in the plan view of FIG. Next, as shown in FIG. 9, the self-supporting stand 25 is used for self-supporting, and at (8), one end of the above-mentioned spacing maintaining auxiliary frame 24 is set to the spacing maintaining auxiliary frame holding lock portion installed on the handle frame 1 (not shown). Connect and fix to. At (9), the pulling handle 13 is rotated to the side and locked.

7 and 8 show a frame configuration when the folding state of the present invention is independent. In the front view of FIG. 7, the auxiliary frame fixing base 15 of the main body frame 14 is used as a fulcrum, and the handle set A is rotated and moved by the auxiliary frame 18 with a wheel interval that enables stable traction to the rear wheel 26 side. The main body frame 14 and the rear wheel 26 and the handle frame 1 and the front wheel 4 are framed in an A shape that face each other diagonally, and one end of the distance maintaining auxiliary frame 24 is connected and fixed to the handle frame 1 by a lock structure (not shown). It has been shown that Further, the saddle 19 tilted to the side of the rear wheel 26 and the handle bar 9a on the rotational movement side of the handle set A are accommodated between the front wheel 4 and the rear wheel 26 by the handle set A rotated by the auxiliary frame 18. It has been shown.

In the side view of FIG. 8, the frame structure and folding method of the present invention eliminates components such as a handle frame, a saddle and a saddle frame in the surface direction existing on the surface of the frame in the existing and known folding methods. It has been shown. That is, the plan view shown in FIG. 7 shows that a planar space B is formed by the frame structure between the auxiliary frame fixing base 15 of the main body frame 14 and the upper side of the front wheel 4 and the rear wheel 26. Therefore, it is shown that the formed planar space B can be loaded and moved by binding the frame and the parcel with a rope as shown in FIG. Further, hooks, baskets, racks, and the like may be installed as auxiliary components for loading (not shown).

FIG. 10 shows a state in which the dedicated back 36 is installed in the planar space B formed by the present invention by a simple attachment / detachment mechanism (not shown).

FIG. 12 does not use the mount 6 provided at the upper end of the handle shaft 30 as the connection with the main body frame 14 as in the first embodiment of the present invention, but the detachable companion portion 38 provided at the upper part of the handle frame 1. Example 1 of claim 6 which is shown to be performed is shown. This also shows that the same effect as that of claim 1 of the present invention can be obtained.

FIG. 13 shows an embodiment in which an intermediate rotation shaft 39 is provided between the attachment portion of the auxiliary frame 18 of the first embodiment of the first embodiment to the auxiliary frame fixing base 15 and the attachment portion to the handle frame holding portion 2. Example 1 is shown.

FIG. 14: has shown the folding state self-supporting front view of Example 1 of Claim 7. FIG. As shown in the figure, the intermediate rotating shaft 39 is provided on the auxiliary frame 18, so that in the embodiment shown in FIG. 7, the folded frame structure and the front wheel 4 and the rear wheel 26 face each other diagonally. It is shown that the main body frame 14 and the rear wheel 26 and the handle frame 1 and the front wheel 4 face each other in parallel with each other while forming a mold shape. Thus, in the embodiment of claim 1, because of the A shape, a slight rotational resistance of the wheel occurs during towing, but in claim 7, the wheels face each other in parallel as in an existing shopping cart or other human-powered towing product. Therefore, it is shown that smooth traction with less rotational resistance is possible.

FIG. 16 shows the first embodiment of claim 8 in which the pulling handle 13 provided at the rear portion of the attaching / detaching mechanism portion 11 is integrally formed at the front end of the main body frame 14 or installed as a separate part. Show. In the first embodiment of the present invention, as shown in FIG. 11, the attachment / detachment mechanism portion 11 is installed on the front portion of the pulling handle 13 so as to protrude together with the front portion of the main body frame 14. May touch the user's body, but in claim 8 there is an attaching / detaching mechanism 11 at the rear of the pulling handle 13, so there is no protrusion, and as shown in the drawing image of FIG. There is no worry. Further, the pulling handle 13 is formed integrally with the front end of the main body frame 14 or installed as a separate part, so that the connection between the handle set A and the main body frame 14 is released in step (4) of the folding procedure of FIG. 18 also serves as a handle for operation when the handle set A is moved to the rear wheel 26 side, and can be easily folded.

FIG. 18 shows the function of holding the handle set A of the auxiliary frame 18 according to the first embodiment of the first aspect and the function of rotational movement to the rear wheel 26 side by means of the hinged-structure body frame folding joint 42 and the rear body frame 40. The embodiment 1 of claim 9 is shown in which the folding method and the state as the basis of claim 1 of the present invention are made possible by replacing the front body frame 40 divided into the body frame 41.

In claim 9, since the function of the auxiliary frame 18 of claim 1 is replaced by the front main body frame 40, the upper end of the handle shaft is replaced with the attachment / detachment mechanism portion 11 with the handle set A in the main body frame 14 in claim 1. The intermediate folding shaft 44 described later is moved by the shaft so that the holding shaft 43 is movable at the front end of the handle frame angle maintaining auxiliary frame 45 that supports the angle of the handle set A installed on the front main body frame 40 with the ground when traveling. It is pivotally installed.

The handle shaft upper end holding portion 43 of the ninth aspect is fixed to the handle shaft upper end with a structure (not shown) that does not hinder the rotation of the handle shaft 30. For example, the configuration of the rotary shaft 31, the tightening piece receiver 32, and the bearing ball 33 in the conceptual cross-sectional view of the coupling mechanism portion of FIG. 3 of claim 1 is set at the upper end of the handle shaft, and the handle shaft upper end holding portion 43 And so on. The other end of the handle frame angle maintaining auxiliary frame 45 can be rotated vertically and tilted toward the front main body frame 40 by folding the handle set A to the front main body frame 40 and releasing the intermediate folding shaft 44 downwardly. In addition, the front body frame 40 is rotatably installed by a shaft. As a result, the handle set A can be folded down toward the front main body frame 40 as shown in FIG. 2 of the first aspect when folded, and the front side of the front frame 40 as shown in the plan view of FIG. The front wheel 4 can be rotated and arranged to the rear wheel 26 side together with the main body frame 40.

Further, in claim 9, since the function of the auxiliary frame 18 of claim 1 is the front main body frame 40, the front main body frame 40 moves to the rear wheel 26 side together with the handle set A. A saddle 46 with a pulling handle formed as the same body as the saddle or as a separate part under the saddle is tilted forward together with the saddle frame 21 from the saddle frame holding base 47 and fixed by a lock structure (not shown), and then the pulling handle The handle is pulled up and rotated at a shaft coupling joint (not shown) with the saddle post 20 of the attached saddle 46 to be in a towed state.

FIG. 19: has shown the folding state self-supporting front view of Example 1 of Claim 9. As shown in FIG. In the first embodiment of the first aspect, the saddle is disposed between the front wheel 4 and the rear wheel 26 because the saddle is tilted backward. However, in the ninth aspect, the saddle 46 with a pulling handle together with the saddle frame 21 is disposed for the above reason. Since it is moved forward, there is no saddle between the two wheels, and the saddle is positioned at the top as shown in FIG. Further, the rear body frame 41 is installed at the handle frame 1 of the handle set A of the handle set A brought close to the rear wheel 26 side by the front main body frame 40 with the interval maintaining auxiliary frame 24 installed so as to be rotatable about the shaft. It shows that the interval maintaining auxiliary frame holding lock portion is connected and fixed.

By adopting the frame configuration and folding method of the first embodiment of claim 9 as described above, the front frame shown in FIG. 19 and the traction image shown in FIG. It is shown that a planar space B is formed by the frame structure between the folding joint portion 42 and the upper side of the front wheel 4 and the rear wheel 26. Therefore, it is possible to load small packages in the formed planar space B.

In the illustrated embodiment, the frame structure for supporting the front wheels and the rear wheels is shown as a one-side support frame structure, but it is needless to say that the frame may be a both-side support frame that is adopted in many ordinary vehicle types. In addition, the handlebar part is folded at the left and right support bases, but a folding joint is provided in the middle of the handle shaft extended upward from the handle frame used in many of the same type of folding bicycles. Of course, it may be a method of defeating.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall perspective view of a traveling state showing a first embodiment of claim 1; FIG. 3 is a perspective view of the handle set portion falling into the auxiliary frame according to the first embodiment of the present invention. FIG. 3 is a cross-sectional view of the attachment / detachment mechanism concept Ca, Cb plane showing Example 1 of claim 1. It is a handle | saddle part folding procedure perspective view which shows Example 1 of Claim 1. It is a handle set part folding procedure perspective view which shows Example 1 of Claim 1. FIG. 3 is a plan view of a state in which the handle set portion is moved to the rear wheel side showing the first embodiment of claim 1. It is a folding-state self-supporting front view which shows Example 1 of Claim 1. It is a folding-state self-supporting side view which shows Example 1 of Claim 1. It is a self-supporting perspective view of the folding state which shows Example 1 of Claim 1. It is a folding installation perspective view which shows Example 1 of Claim 1. It is a folding state pulling image figure which shows Example 1 of Claim 1. It is a driving | running state whole perspective view which shows Example 1 of Claim 6. FIG. 9 is an overall perspective view of a traveling state showing a first embodiment of claim 7. It is a folding-state self-supporting front view which shows Example 1 of Claim 7. It is a self-supporting perspective view of the folding state which shows Example 1 of Claim 7. FIG. 9 is an overall perspective view of a traveling state showing a first embodiment of claim 8. It is a folding state pulling image figure which shows Example 1 of Claim 8. It is a driving | running state whole perspective view which shows Example 1 of Claim 9. It is a folding-state self-supporting front view which shows Example 1 of Claim 9. It is a folding-state self-supporting perspective view which shows Example 1 of Claim 9. It is a folding state pulling image figure which shows Example 1 of Claim 9.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Handle frame 31 ... Rotating shaft 2 ... Handle frame holding | maintenance part 32 ... Fastening piece receiver 3 ... Vertical rotating shaft 33 ... Bearing ball 4 ... Front wheel 34 ... Top surface Plates 5a, 5b ... handlebar holding part 35 ... tightening piece 6 ... mount 36 ... dedicated back 7 ... handle fixing release lever 37 ... luggage 8 ... removable convex shaft 38 ... Removable companion parts 9a, 9b ... Handle bar 39 ... Intermediate rotating shafts 10a, 10b ... Grip 40 ... Front main body frame 11 ... Removable mechanism part 41 ... Rear main body frame 12 ... Connection release lever 42 ... Body frame folding joint 13 ... Pull handle 43 ... Handle shaft upper end holding part 14 ... Body frame 44 ... Intermediate folding shaft 15・ Auxiliary frame fixed base 45 ・ ・ ・ Handle frame angle maintenance auxiliary 16 ・ ・ ・ Horizontal rotation axis Frame 17 ・ ・ ・ Vertical rotation axis 46 ・ ・ ・ Saddle with pull handle 18 ・ ・ ・ Auxiliary frame 47 ・ ・ ・ Saddle frame Holding base 19 ... Saddle 48 ... Shaft drive 20 ... Saddle post A ... Handle set 21 ... Saddle frame B ... Planar space 22 ... Saddle frame holding part Ca, Cb · .. Detachable mechanism section cut surface position 23 ... Saddle frame fixing release lever 24 ... Spacing support frame 25 ... Standing stand 26 ... Rear wheel 27 ... Side stand 28 ... Drive chain 29a 29b ... Pedal 30 ... Handle shaft

Claims (10)

One end of the auxiliary frame that pivotally supports the handle frame vertically to the auxiliary frame side is pivotally attached to the lower part of the handle frame that rotatably supports the handle shaft, and the front end or front portion of the main body frame is attached to the upper end of the handle shaft. A mount that has a companion part that is paired with an attachment / detachment mechanism part that connects and fixes the steering wheel shaft so as to be capable of steering rotation is fixedly installed, and one end of the auxiliary frame pulls the front wheel part to the rear wheel side on the main body frame It is pivotally installed so that it can be rotationally moved so that it can touch the ground at the same position with an interval width that is stable at times, and a stand for self-supporting is provided at the rear of the main body frame that supports the rear wheel , folding to release the connection Folding is characterized by the fact that the front wheel, rear wheel, and stand are sometimes supported at three points, and a handle is provided at the front of the main body frame for towing movement. Tami bicycle. Installed with the saddle frame and the saddle frame holding part installed on the main body frame so that the saddle is tilted backward with respect to the main body frame between the front and rear wheels rotated by the auxiliary frame. The folding bicycle according to claim 1. When the front wheel and the rear wheel are arranged to be grounded to the ground at the same position with a spacing width that is stabilized by the auxiliary frame when folded, the main body frame and the handle frame are connected and fixed in order to maintain the positional relationship. The folding bicycle according to claim 1, further comprising an interval maintaining auxiliary frame. The folding bicycle according to claim 1, further comprising a handlebar holding portion that can be rotatably and fixedly mounted on a mount that is fixedly installed on an upper end of the handleshaft, and a handlebar holding portion that can also be rotated and fixed to the mount. . When folded according to the frame configuration and folding method of the present invention, a virtual planar space is formed by the main body frame, the handle frame, the auxiliary frame, and the interval maintaining auxiliary frame, and the parcel is bound to the component frame by a rope or the like. The folding bicycle according to claim 1, wherein the folding bicycle can be loaded in the space . 2. The folding bicycle according to claim 1, wherein a companion portion that is paired with an attaching / detaching mechanism portion provided at a front portion of the main body frame according to claim 1 is provided on an upper side surface of the handle frame. The folding bicycle according to claim 1, wherein the auxiliary frame is provided with an intermediate rotation shaft so that the front wheel and the rear wheel can face each other in parallel so as to contact the ground at the same position at a certain interval width. 2. The folding bicycle according to claim 1, wherein a handle for pulling and moving is formed or installed at a front end of the main body frame, and an attaching / detaching mechanism between the handle shaft and the main body frame is installed behind the handle. An auxiliary frame pivoting structure for supporting the handle frame according to claim 1 so as to be vertically rotatable is provided at the front end of the front body frame of the body frame divided by the body frame folding joint, A handle frame angle maintaining auxiliary frame is provided for maintaining an angle between the steering wheel set and the handle set, and one end of the auxiliary supporting frame is installed on the upper end of the handle shaft or the upper side surface of the handle frame by a holding tool, and one end is also moved forward. A foldable bicycle that is pivotally installed at the rear of the body frame. A saddle equipped with a handle for pulling on the lower side of the front part is installed on the saddle post by a pivot joint lock structure with a shaft. Installed on the rear body frame by the saddle frame holding base with the pivot joint lock structure or by itself with the pivot lock structure, and when folded, the saddle is fixed forwardly with respect to the rear body frame by the saddle frame holding base The front part of the saddle is pivoted upward by a shaft joint with the saddle post and is fixed by a lock structure. The folding bicycle according to claim 9, wherein the folding bicycle is characterized.

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