Assembly type unicycle

Abstract

To provide an assembly type unicycle which is convenient for packaging, transportation, and storage.SOLUTION: In an assembly type unicycle, a loading space 4, a wheel 5, and a leg frame 6 are detachably provided at a body frame A. The body frame A comprises a loading space support frame 1, a wheel support frame 2, and a handle frame 3. The wheel support frame 2 is configured to be switchable between a protruding state D in which the wheel 5 may be attached thereto and a folded state F in which the wheel support frame 2 is provided along a lower part of the loading space support frame 1. The handle frame 3 is configured to be selectively switchable between a protruding state D, in which it extends rearward beyond the loading space support frame 1, and a folded state F, in which it is disposed along an upper portion of the loading space support frame 1. The body frame A in which the wheel support frame 2 and the handle frame 3 are in the folded state F is stored with the wheel 5 and the leg frame 6 into the loading space 4.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present invention relates to a collapsible unicycle that can be packed, transported, and stored in a compact form. [Background technology]

[0002] A push cart for transporting cargo used at construction sites and the like typically consists of a platform for carrying the cargo, a frame that supports the platform, a handle that protrudes rearward from the frame, wheels supported on the front lower part of the frame, and legs that protrude downward from the rear lower part of the frame.

[0003] For transportation reasons, it is desirable for this type of unicycle to be packed in a compact form when shipped from the manufacturer. Therefore, a unicycle has been proposed in which the handle is foldable relative to the frame, and the wheels are supported on the front lower part of the frame via wheel support frames that are detachably attached to the front lower part of the frame, and the unicycle can be made compact by folding the handle and removing the wheels and the wheel support frames from the frame when packed (see Patent Document 1 below). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 10-181607 Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention relates to an improvement to the compact unicycle described in Patent Document 1 above, and provides an assembly-type unicycle that can be made even more compact and is convenient for packaging, transportation, and storage. [Means for solving the problem]

[0006] The gist of the present invention will be explained with reference to the accompanying drawings.

[0007] This assembly type unicycle has wheels 5 attached to the lower front part of a main frame A having a loading platform 4 on top, a leg frame 6 attached to the lower rear part of the main frame A in a vertical position so as to be in contact with the ground together with the wheels 5, and an operating handle 7 attached to the rear of the main frame A in a manner that protrudes rearward, The platform 4, the wheels 5, and the leg frame 6 are detachably attached to the main body frame A, The main frame A is composed of a bed support frame 1 to which the bed 4 is detachably attached at the top, a wheel support frame 2 suspended from the front lower part of the bed support frame 1, and a handle frame 3 protruding rearward from the rear of the bed support frame 1 and having the operating handle portion 7 at the protruding tip. The wheel support frame 2 is composed of a wheel mounting frame portion 2A to which the wheel 5 is detachably attached, and a holding frame portion 2B which is connected to the wheel mounting frame portion 2A in a manner that allows the connection to be released, and the wheel mounting frame portion 2A and the holding frame portion 2B are rotatably provided at the bottom of the bed support frame 1, and are configured to be switchable between a protruding state D in which the wheel mounting frame portion 2A, which is rotated downward and hanging down, is connected to the holding frame portion 2B so that the wheel 5 can be mounted to the wheel mounting frame portion 2A, and a folded state F in which the wheel mounting frame portion 2A and the holding frame portion 2B are disconnected and rotated upward so that the frame is placed along the bottom of the bed support frame 1, The handle frame 3 is pivotally mounted to the rear of the bed support frame 1 and is configured to be switchable between a protruding state D in which the handle frame 3 is rotated rearward to protrude rearward from the bed support frame 1, and a folded state F in which the handle frame 3 is rotated forward to be placed along the upper or lower part of the bed support frame 1, This relates to an assembly type unicycle characterized in that the main frame A and the loading platform 4 are configured so that the main frame A, from which the loading platform 4 has been removed and the wheel support frame 2 and the handle frame 3 are in the folded state F, can be accommodated in the loading platform 4, which has been removed from the main frame A, together with the wheels 5 removed from the wheel support frame 2 and the leg frame 6 removed from the main frame A.

[0008] The present invention also relates to an assembly type unicycle as described in claim 1, characterized in that the main body frame A with the wheel support frame 2 and the handle frame 3 in the folded state F is configured to be stored in the loading platform 4 without protruding outward from the outer peripheral edge of the loading platform 4 when viewed in a plane.

[0009] The handle frame 3 is also configured to be placed along the top of the loading platform support frame 1 in the folded state F by rotating the handle frame 3 upwardly of the loading platform support frame 1 and folding it forward, which relates to the assembly type unicycle described in claim 1. [Effects of the Invention]

[0010] Since the present invention is configured as described above, the main frame can be stored in the loading platform by folding the wheel support frame and handle frame, and the wheels and leg frames removed from the main frame can also be stored in the loading platform, resulting in an extremely practical assembled unicycle that can be made compact for easy packaging and transportation and can be stored in a space-saving manner.

[0011] In addition, the invention described in claim 2 results in an assembly type unicycle with an even more practical configuration, in which the wheel support frame and handle frame are folded and the main frame is stored in the carrier, resulting in a compact configuration.

[0012] Furthermore, in the invention described in claim 3, the handle frame can be easily folded and rotated without coming into contact with the ground, making the assembly type unicycle even more practical. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 is a perspective view showing a first embodiment. [Figure 2] FIG. 1 is a front view showing a first embodiment. [Figure 3] FIG. 1 is a side view showing the first embodiment. [Figure 4] FIG. 1 is a plan view showing a first embodiment. [Figure 5] FIG. 1 is a perspective view showing the first embodiment, in which the loading platform is removed from the main body frame and the wheels are removed from the wheel support frame. [Figure 6] 6 is a perspective view showing a state in which the leg frame has been removed from the main body frame of FIG. 5. FIG. [Figure 7] FIG. 7 is a perspective view showing the main body frame with the wheel support frame and the handle frame folded, following FIG. 6. [Figure 8] 8 is a perspective view showing a state (packaged state) in which the main body frame, leg frames, and wheels in the state of FIG. 7 are housed in the loading platform. FIG. [Figure 9] FIG. 10 is a perspective view showing the second embodiment, with the loading platform omitted. DETAILED DESCRIPTION OF THE INVENTION

[0014] The best mode for carrying out the present invention will now be briefly described with reference to the accompanying drawings, illustrating the operation of the present invention.

[0015] The collapsible unicycle of the present invention can be made compact for convenient packaging.

[0016] Specifically, the loading platform 4 and leg frame 6 can be removed from the main frame A, and the wheels 5 can also be removed from the wheel support frame 2 that hangs down from the lower front part of the loading platform support frame 1 of the main frame A.

[0017] In addition, the main frame A can be folded into a folded state F in which the wheel support frame 2 and the holding frame portion 2B are rotated upward and aligned with the lower part of the bed support frame 1 by disconnecting the wheel support frame portion 2A from the wheel mounting frame portion 2A, and the handle frame 3, which is provided in a protruding state to the rear, can be rotated forward of the bed support frame 1 to be aligned with the upper or lower part of the bed support frame 1, thereby achieving a flat shape in which the wheel support frame 2 does not protrude downward and a compact shape in which the handle frame 3 does not protrude to the rear.

[0018] Then, when the main frame A folded into this compact form is stored in the loading platform 4 detached from the main frame A, and the wheels 5 detached from the wheel support frames 2 and the leg frames 6 detached from the main frame A are also stored in the loading platform 4, the whole is put together into a compact form roughly the same size as the loading platform 4, which makes it possible to pack and transport it in this compact form and also to store it in a space-saving manner.

[0019] To assemble from this compact form, remove the wheels 5, leg frame 6 and main body frame A from the loading platform 4, rotate the wheel support frame 2 (wheel mounting frame portion 2A and holding frame portion 2B) of the main body frame A, which is in the folded state F, downward and connect the holding frame portion 2B to the wheel mounting frame portion 2A to hold the wheel support frame 2 in the protruding state D (hanging protruding state), and rotate the handle frame 3, which is in the folded state F, towards the rear of the loading platform support frame 1 to place it in the protruding state D protruding behind the loading platform support frame 1. Then, attach the wheels 5 to the wheel support frame 2 (wheel mounting frame portion 2A), attach the leg frame 6 to the lower rear side of the loading platform support frame 1, and attach the loading platform 4 onto the loading platform support frame 1 (main body frame A) to complete the unicycle. [Example]

[0020] A specific embodiment 1 of the present invention will be described with reference to FIGS. 1 to 8. FIG.

[0021] As shown in Figures 1 and 3, the assembly type unicycle of this embodiment is configured such that wheels 5 are mounted on the lower front side of a main frame A having a loading platform 4 on top, a leg frame 6 that is mounted vertically on the lower rear side of the main frame A and that touches the ground together with the wheels 5, and an operating handle portion 7 is mounted on the rear of the main frame A in a manner that protrudes rearward, and the loading platform 4, wheels 5 and leg frame 6 are detachable from the main frame A.

[0022] In addition, the main frame A of this embodiment is composed of a loading platform support frame 1 to the upper part of which the loading platform 4 is detachably attached, a wheel support frame 2 that hangs down from the lower front part of the loading platform support frame 1, and a handle frame 3 that protrudes rearward from the rear of the loading platform support frame 1 and has the operating handle portion 7 at its protruding tip.

[0023] Specifically, as shown in Figures 5 and 6, the loading platform support frame 1 is composed of a frame that is roughly U-shaped in plan view, with a linear connecting frame portion 9 installed between the free ends of a U-shaped main frame portion 8, and is used with the side with the connecting frame portion 9 located at the rear and the opposite side at the front.

[0024] In addition, the loading platform support frame 1 is formed so that the front side is inclined upward to fit the bottom shape of the loading platform 4 by bending the middle portions of the left and right frame portions (of the main frame portion 8), and a reinforcing frame portion 10 is installed in an erected state between the middle portions of the left and right frame portions of the main frame portion 8.

[0025] As shown in Figures 1, 2, 3 and 5, the wheel support frame 2 is composed of a wheel mounting frame portion 2A to which the wheel 5 is detachably attached, and a holding frame portion 2B which is detachably connected to the wheel mounting frame portion 2A.

[0026] The wheel mounting frame portion 2A is configured as a substantially U-shaped frame, and both free ends thereof are attached to the reinforcing frame portion 10 of the bed support frame 1. In other words, the wheel mounting frame portion 2A is used with both free ends positioned at the rear and the opposite ends positioned at the front.

[0027] As shown in Figures 2 and 5, the wheel mounting frame portion 2A has a bearing piece portion 11 that supports the wheel 5 so that it can rotate freely, which is hung down from the middle of the left and right frame portions, and at the top of this bearing piece portion 11 is a connecting piece portion 12 that can be detachably connected to the other end (the lower end when hung down) of the holding frame portion 2B and is made up of one piece (a single plate) with this bearing piece portion 11 and is arranged in an upright state.

[0028] In addition, both free ends (rear ends) of the wheel mounting frame portion 2A are pivotally attached to the reinforcing frame portion 10 of the loading platform support frame 1 via hinges so that the wheel mounting frame portion 2A can be switched between a state in which it protrudes downward from the loading platform support frame 1 (protruding state D) by rotating the wheel mounting frame portion 2A downward relative to the loading platform support frame 1, and a state in which it is installed along the bottom of the loading platform support frame 1 by rotating the wheel mounting frame portion 2A upward (in the direction indicated by arrow Y1 in Figure 6) from this protruding downward state D (folded state F) (see Figures 6 and 7).

[0029] Furthermore, the size and front-to-rear length of the wheel mounting frame portion 2A are set and configured so that when the wheel mounting frame portion 2A is rotated upward, its front frame portion abuts against the front frame portion of the loading platform support frame 1 (main frame portion 8) and is placed alongside the lower part of the loading platform support frame 1 (the folded state F), and when the wheel mounting frame portion 2A is placed in the folded state F, the wheel mounting frame portion 2A is configured so that it does not rotate upward more than necessary and impair folding operability.

[0030] On the other hand, the holding frame portion 2B is composed of two (a pair of left and right) straight frames, and one end of each is pivotally attached to the front end of the left and right frame portions of the loading platform support frame 1 (main frame portion 8) so that it can be rotated freely.It is configured to be switchable between a state in which it protrudes downward from the loading platform support frame 1 (protruding state D) by rotating it downward relative to the loading platform support frame 1, and a state in which it is attached along the bottom of the loading platform support frame 1 (folded state F) by rotating it upward from this protruding state D (in the direction indicated by arrow Y2 in Figure 6) (see Figures 6 and 7).

[0031] Furthermore, this holding frame portion 2B is configured so that when it is rotated downward and protrudes downward, its other end (lower end) can be connected to the connecting piece portion 12 of the wheel mounting frame portion 2A, which is also rotated downward and protrudes downward.When this holding frame portion 2B is connected to the connecting piece portion 12, this holding frame portion 2B and the wheel mounting frame portion 2A are held in a state where they protrude downward (the wheel support frame 2 is held in the protruding state D in which it protrudes downward from the lower part of the bed support frame 1), and when this holding frame portion 2B is disconnected from the wheel mounting frame portion 2A (its connecting piece portion 12), both the holding frame portion 2B and the wheel mounting frame portion 2A can be rotated upward and placed along the lower part of the bed support frame 1 (the wheel support frame 2 is placed in the folded state F).

[0032] Furthermore, the connection structure of this holding frame portion 2B, which allows it to be connected and disconnected to the wheel mounting frame portion 2A (the connecting piece portion 12 thereof), is not shown in detail, but a screw hole 13 is formed at the other end of the holding frame portion 2B, and a screw for insertion into this screw hole 13 is protruding from the connecting piece portion 12, and this screw is passed through the screw hole 13 and then a wing nut 14 is screwed onto the screw and tightened, thereby connecting the other end of the holding frame portion 2B to the wheel mounting frame portion 2A, and is configured so that from this connected state, the wing nut 14 can be loosened and removed from the screw, and the screw hole 13 can be detached from the screw (connecting piece portion 12), thereby disconnecting the holding frame portion 2B (the other end) from the wheel mounting frame portion 2A (see Figures 2, 5 and 6).

[0033] Next, the structure for detachably mounting the wheel 5 to the wheel mounting frame portion 2A will be explained. The bearing piece portion 11 of the wheel mounting frame portion 2A is formed with a notched bearing portion 15 that is open on the downward side, and axle screws 16 that are inserted into these notched bearing portions 15 from the downward opening are protruding from both sides of the center of the wheel 5. When each of these axle screws 16 is inserted into the notched bearing portion 15 from below and then a mounting nut 17 is screwed and tightened onto each of the axle screws 16 that protrudes outward from the bearing piece portion 11, the wheel 5 can be mounted to the wheel mounting frame portion 2A (wheel support frame 2). When the wheel 5 is in this mounted state, the mounting nuts 17 can be loosened and removed from the axle screws 16, and the wheel 5 can be moved downward (the axle screws 16 can be removed from the notched bearing portion 15), thereby removing the wheel 5 from the wheel mounting frame portion 2A (wheel support frame 2) (see Figures 1, 2 and 5).

[0034] As shown in Figures 5 and 6, the handle frame 3 is composed of a frame that is approximately H-shaped in plan view, with a connecting frame section 19 installed between the middle sections of a pair of left and right long frame sections 18, and a handle cap 7 is fitted onto one side end of each of the left and right long frame sections 18, which handle cap 7 constitutes the operating handle section 7, and a connection section 20 is provided on the other side end of each for connecting to the loading platform support frame 1 (the connection frame section 9 thereof), and the side with the handle cap 7 is positioned at the rear and the opposite side (the side with the connection section 20) is positioned at the front.

[0035] In addition, the handle frame 3 is formed so that the left and right long frame portions 18 are bent so that the operating handle portion 7 is positioned higher than the connection portion 20 when viewed from the side (see Figure 3), and a screw rod 28 for attaching the leg frame 6 is protruded in a vertical position from the lower part of the middle part of each long frame portion 18 (see Figure 6).Furthermore, although not shown in detail, a loading platform mounting screw for attaching the loading platform 4 is protruded in an upright position from the upper part of the middle position of the connecting frame portion 19.

[0036] The connection structure of this handle frame 3 to the loading platform support frame 1 (connection frame portion 9) will be explained below. The connection portions 20 are made of pipe material that can be fitted to both ends of the connection frame portion 9 or can be plugged into both pipe-shaped ends of the connection frame portion 9. The handle frame 3 is connected to the loading platform support frame 1 by fitting or plugging these connection portions 20 into both ends of the connection frame portion 9, and the connection portions 20 are rotatably connected to both ends of the connection frame portion 9 with both ends of the connection frame portion 9 as fulcrums. This allows the handle frame 3 to be rotatable relative to the loading platform support frame 1 via these connection portions 20. The handle frame 3 is configured to be switchable between a protruding state D in which it is rotated rearward of the loading platform support frame 1 and protrudes rearward, and a folded state F in which it is rotated forward of the loading platform support frame 1 (in the direction indicated by arrow Y3 in FIG. 6) and placed alongside the loading platform support frame 1 (see FIGS. 5 to 7).

[0037] Furthermore, the drawing shows a case in which the handle frame 3 in the protruding state D is rotated upwardly of the loading platform support frame 1 and folded forward until the connecting frame portion 19 abuts or comes close to the main frame portion 8, thereby causing the handle frame 3 to assume the folded state F along the upper part of the loading platform support frame 1, and the handle frame 3 can be rotated upward without coming into contact with the ground, making it easy to perform the folding and rotating operation; however, a configuration in which the handle frame 3 in the protruding state D is rotated downwardly of the loading platform support frame 1 and folded, causing the handle frame 3 to assume the folded state F along the lower part of the loading platform support frame 1 may also be adopted.

[0038] The loading platform 4 of this embodiment is a box-shaped body that is roughly rectangular in plan view and has a length in the front-to-rear direction, and the shape of the connecting portion between the front wall and bottom wall of the bottom surface is formed in a shape that follows the curved shape of the left and right frame portions of the loading platform support frame 1 (main frame portion 8). In other words, by aligning the front-to-rear direction of the loading platform 4 with the front-to-rear direction of the loading platform support frame 1, the loading platform 4 is configured to be able to be placed on the loading platform support frame 1.

[0039] Next, the detachable mounting structure of the loading platform 4 to the main frame A will be explained. Hooks 21 are attached to the lower left and right parts near the front end of the underside of the front wall of the loading platform 4, and can be detachably hooked onto the front part of the main frame part 8 of the loading platform support frame 1. At the center of the rear end of the loading platform 4, a connecting piece 23 with a screw hole 22 is provided to be placed on the connecting frame part 19 of the handle frame 3. After the hooks 21 are hooked onto the front part of the loading platform support frame 1 (main frame part 8), loading platform mounting screws at the top of the connecting frame part 19 are inserted into the screw holes 22, and the connecting piece 23 is placed on the connecting frame part 19. The loading platform 4 is attached to the main frame A by placing the loading platform 4 on the main frame A and screwing and tightening a wing nut 24 onto the loading platform mounting screw protruding upward from the screw hole 22, and the handle frame 3 is positioned in the protruding state D. When removing the loading platform 4 from the main frame A, the wing nut 24 is loosened and removed from the loading platform mounting screw to release the connecting piece 23 from the loading platform mounting screw, and then the hook piece 21 is simply hooked and unhooked from the front part of the loading platform support frame 1 (main frame portion 8), and removal of the loading platform 4 makes it possible to rotate the handle frame 3 and set it to the folded state F. That is, the loading platform 4 of this embodiment is configured to be attached to the loading platform support frame 1 and the handle frame 3.

[0040] As shown in Figures 1 and 3, the leg frame 6 of this embodiment is composed of a pair of left and right U-shaped frames, and is attached in a vertical state to the left and right long frame portions 18 of the handle frame 3 of the main frame A with both free ends facing upward.

[0041] The leg frame 6 is detachably mounted on the main frame A (the handle frame 3 (long frame portion 18)). One end of the leg frame 6 is provided with a pipe-shaped locking portion 25 that is detachably fitted or inserted into the outer end of each of the left and right connecting portions 20 of the handle frame 3 (the leg frame 6 is made of a pipe material, and one end of the pipe is configured as the locking portion 25). The other end is provided with a fixing piece 27 with a screw hole 26 that is provided along the underside of the middle portion of each long frame portion 18. The locking portion 25 is fitted or inserted into the connecting portion 20. After the engagement, the threaded rod 28 hanging down from the bottom of the long frame portion 18 is inserted into the screw-through hole 26 while the fixing piece portion 27 is aligned with the underside of each long frame portion 18, and a wing nut 29 is screwed onto the threaded rod 28 protruding downward from the screw-through hole 26 and tightened, thereby mounting the leg frame 6 in an upright position.When removing the leg frame 6 from the main frame A, the wing nut 29 is loosened to release the fixing piece portion 27 downward from the threaded rod 28, and the engagement portion 25 is released (pulled out) from the connection portion 20, allowing it to be easily removed as shown by arrow Y4 in Figure 6.

[0042] In addition, in this embodiment configured as described above, the loading platform 4, the wheels 5, and the leg frames 6 can be removed from the main frame A (the wheels 5 are attached to the wheel support frame 2), and further, the wheel support frame 2, which is installed in an upright position, can be rotated upward to a folded state F along the bottom of the loading platform support frame 1 by disconnecting the holding frame portion 2B from the wheel mounting frame portion 2A of the main frame A, thereby rotating the wheel mounting frame portion 2A and the holding frame portion 2B upward to a folded state F along the bottom of the loading platform support frame 1, and the handle frame 3, which is installed in a rearward protruding state, can be rotated forward of the loading platform support frame 1 to be installed along the top of the loading platform support frame 1, thereby achieving a flat form in which the wheel support frame 2 does not protrude downward, and a compact form in which the handle frame 3 does not protrude rearward, and in this compact form, the dimensions of each part of the main frame A and the size of the loading platform 4 are set and configured so that the main frame A can be stored within the loading platform 4 without protruding outward in a planar view from the outer peripheral edge of the loading platform 4 that has been removed from the main frame A.

[0043] The sizes of the main body frame A, loading platform 4, wheels 5, and leg frames 6 are set and configured so that the leg frames 6 removed from the main body frame A can be placed and stored on top of the compact main body frame A housed in loading platform 4, and the wheels 5 removed from the wheel support frames 2 can be placed horizontally on the leg frames 6 or on the part of the main body frame A on which the leg frames 6 are not placed (see Figure 8).In this way, the collapsible unicycle of this embodiment can be folded into a compact form roughly the same size as the loading platform 4, making it convenient for packaging, transportation, and storage. [Example]

[0044] A specific second embodiment of the present invention will be described with reference to FIG.

[0045] This embodiment differs from the first embodiment in the mounting structure of the leg frame 6 to the main body frame A.

[0046] Specifically, a short pipe-shaped fastening portion 30 protrudes from the outer surface near the rear end of each of the left and right frame portions of the loading platform support frame 1 (the main frame portion 8), and the locking portion 25 of the leg frame 6 is fitted or inserted into this fastening portion 30, and then secured with a bolt 31 and nut 32 (the locking portion 25 can be released from the fastening portion 30 by removing the bolt 31 and nut 32).

[0047] That is, the leg frame 6 of this embodiment is attached so as to straddle the bed support frame 1 and the handle frame 3. According to this configuration, the protruding state D of the handle frame 3 is maintained by the attachment of the leg frame 6 to the main body frame A and the attachment of the bed 4 to the main body frame A, so that the load-bearing capacity is higher than the configuration of the first embodiment in which the protruding state D of the handle frame 3 is maintained only by the attachment of the bed 4 to the main body frame A.

[0048] In this embodiment, stopper pieces 33 are provided on both ends of the connecting frame portion 9 of the bed support frame 1 to prevent the handle frame 3 from rotating downward more than necessary from the protruding state D when the handle frame 3 is rotated rearward and protruded to the protruding state D. This configuration improves the operability when rotating the handle frame 3 from the folded state F to the protruding state D compared to the first embodiment.

[0049] The other configurations are the same as those in the first embodiment.

[0050] The present invention is not limited to the first and second embodiments, and the specific configuration of each component can be designed as appropriate. [Explanation of symbols]

[0051] 1 Cargo bed support frame 2 Wheel support frame 2A Wheel mounting frame 2B Holding frame part 3 Handle frame 4 Cargo bed 5 wheels 6-leg frame 7 Operating handle A Main frame D. Protruding state F Folded state

Claims

1. A collapsible unicycle has wheels attached to the front lower part of a main frame having a loading platform at the top, a leg frame that is attached to the rear lower part of the main frame in a vertical state and that contacts the ground together with the wheels, and an operating handle part that is attached to the rear of the main frame in a state that it protrudes rearward, The loading platform, the wheels, and the leg frame are detachably provided on the main body frame, The main frame is composed of a bed support frame to which the bed is detachably attached at its upper part, a wheel support frame suspended from the front lower part of the bed support frame, and a handle frame protruding rearward from the rear of the bed support frame and having the operating handle portion at its protruding tip, The wheel support frame is composed of a wheel mounting frame portion to which the wheels are detachably attached, and a holding frame portion which is connected to the wheel mounting frame portion in a manner that allows the connection to be released, and the wheel mounting frame portion and the holding frame portion are rotatably provided at the bottom of the bed support frame and are configured to be switchable between a protruding state in which the wheel mounting frame portion is rotated downward and hung down and connected to the holding frame portion so that the wheels can be mounted to the wheel mounting frame portion, and a folded state in which the wheel mounting frame portion is disconnected from the holding frame portion and rotated upward so that the frame is placed along the bottom of the bed support frame, The handle frame is pivotally attached to the rear of the bed support frame so as to be freely rotatable, and is configured to be switchable between a protruding state in which the handle frame is rotated rearward of the bed support frame to protrude rearward of the bed support frame, and a folded state in which the handle frame is rotated forward of the bed support frame to be placed along the upper or lower part of the bed support frame, This assembly type unicycle is characterized in that the main frame and the loading platform are configured so that the main frame with the loading platform removed and the wheel support frame and the handle frame in the folded state can be stored in the loading platform removed from the main frame, together with the wheels removed from the wheel support frame and the leg frames removed from the main frame.

2. The assembly type unicycle according to claim 1, characterized in that the main body frame, with the wheel support frame and the handle frame in the folded state, is configured to be stored in the loading platform without protruding outward from the outer peripheral edge of the loading platform in a plan view.

3. 2. The assembly type unicycle according to claim 1, wherein the handle frame is configured so that it can be placed along the upper part of the loading platform support frame and placed in the folded state by rotating the handle frame above the loading platform support frame and folding it forward.

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