TWI534034B - Vehicle - Google Patents

Description

vehicle

The present invention relates to a vehicle, and more particularly to a vehicle including a pallet for cargo handling.

Previously, a three-wheeled bicycle was used as a bicycle for home use or business (shipping, etc.). For example, the three-wheeled electric bicycle disclosed in Patent Document 1 includes a vehicle body, a front wheel, a pair of rear wheels, and a pedal for rotating a pair of rear wheels. Further, a shelf is provided between the pair of rear wheels. In such a three-wheeled bicycle, the cargo loaded on the shelf can be mainly supported by the two rear wheels, so that it is possible to suppress a large load on the front portion of the vehicle body. Thereby, even when the cargo is loaded on the shelf, the handle operation can be suppressed from becoming heavy, and the driving can be smoothly performed.

In the three-wheeled bicycle as described above, the cargo handling trolley may be used in order to load a large number of goods. As the cargo handling trolley for mounting on a three-wheeled bicycle, for example, a trailer disclosed in Patent Document 2 can be used. The trailer of Patent Document 2 includes a body member for loading goods, a wheel disposed at a rear portion of the body member, and a connecting member extending from a front portion of the body member toward the front portion obliquely upward. The front end of the connecting member is coupled to the bicycle via a pin extending in a substantially up-and-down direction. Specifically, the connecting member is provided to be rotatable about the pin. Thereby, the trailer is arranged to swing in the width direction of the bicycle.

However, when the cargo handling trolley is placed on a three-wheeled bicycle in such a manner that it can swing in the width direction of the three-wheeled bicycle, even if three wheels When driving, the direction of travel is changed during driving, and the trolley for cargo handling is temporarily advanced straight. In this case, the three-wheeled bicycle and the cargo transporting trolley are bent in a substantially U-shape (plan view) around the connecting portion. Therefore, the rear portion of the three-wheeled bicycle is pushed obliquely with respect to the traveling direction of the three-wheeled bicycle by the cargo transporting trolley, and the maneuverability of the three-wheeled bicycle is lowered. In the case where the three-wheeled bicycle and the cargo handling trolley are bent in a substantially U-shaped state, the three-wheeled bicycle is braked, and the rear portion of the three-wheeled bicycle is tilted toward the front, and the front wheel of the three-wheeled bicycle is rotated. After that. In this case, the three-wheeled bicycle cannot be smoothly stopped.

Therefore, the inventors of the present invention have studied the configuration for making the direction of the three-wheeled bicycle coincide with the direction of the cargo handling trolley. For example, Patent Document 3 discloses a trailer unit (trailer) that is coupled to a light-duty truck via a connecting arm that extends in the front-rear direction. The connecting arm is coupled to the light-duty truck so as to be swingable in the vertical direction so that the connecting pin swings in the vertical direction and does not swing in the width direction of the light-duty truck. Therefore, the trailer section swings in the up and down direction with respect to the light truck, but does not swing in the width direction of the light truck. Thereby, the direction of the light truck can be aligned with the direction of the trailer portion.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent No. 3042915

[Patent Document 2] Japanese Patent Laid-Open No. 61-24677

[Patent Document 3] Japanese Patent Laid-Open No. 9-175445

Further, the trailer unit of Patent Document 3 is installed in order to increase the cargo load of the light-duty truck, and is disposed behind the shelf of the light-duty truck. Therefore, for example, when the cargo handling trolley is provided in the three-wheeled electric bicycle of Patent Document 1, when the trailer portion of Patent Document 3 is used, the cargo transport trolley is disposed further behind the shelf. In this case, the total length from the front end of the three-wheeled electric bicycle to the rear end of the cargo handling trolley becomes long, and it is difficult to improve the maneuverability of the three-wheeled electric bicycle. Moreover, it is difficult to drive an electric bicycle in a narrow place such as an alley because the overall length is long.

Accordingly, it is a primary object of the present invention to provide a vehicle that is capable of preventing a long-term length including a cargo handling trolley and having excellent maneuverability.

In order to achieve the above object, a vehicle according to a first aspect of the invention includes: a frame extending in a front-rear direction; a front wheel disposed at a front portion of the frame; and a pair of rear wheels arranged side by side in a left-right direction at a rear portion of the frame a cargo transporting trolley that extends rearward of the rear wheel; and a connecting portion that can swing the vehicle frame and the cargo in such a manner that the cargo transporting trolley can swing in the up and down direction with respect to the frame and cannot swing in the left and right direction with respect to the frame. Using a trolley; and the cargo handling trolley includes: a stowage portion for stowing the cargo; and a caster supporting the stowage portion and configured to be rotatable about a rotational axis extending in the up and down direction; the front end of the stowage portion is a pair of rear wheels The rear end is located further forward and is located below the upper end of the pair of rear wheels.

Furthermore, "the front part of the frame" means not only the front end of the frame but also Includes a slightly rearer position than the front end of the frame. Further, "the rear of the frame" means not only the rear end of the frame but also a position slightly forward of the rear end of the frame.

The vehicle according to claim 2 is characterized in that the connecting portion includes a first shaft portion extending in the left-right direction, a first connecting portion that is provided on the frame and that connects the first shaft portion and the frame, And a second connection portion that is connected to the cargo transport vehicle and that connects the first shaft portion and the cargo transport vehicle; the second connection portion is provided to be swingable in the vertical direction around the first shaft portion.

The vehicle according to claim 2 is characterized in that the connecting portion includes a first connecting portion and a second connecting portion that are arranged side by side in the left-right direction, and each of the first connecting portion and the second connecting portion includes: 1 shaft portion, first connecting portion, and second connecting portion.

The vehicle according to claim 1 is characterized in that the caster includes a first caster and a second caster arranged side by side in the left-right direction, and the connecting portion is a imaginary that the cargo transport trolley can extend in the front-rear direction. The frame and the cargo handling trolley are connected by the swinging shaft.

The vehicle according to claim 4 is characterized in that the connecting portion includes a third connecting portion and a fourth connecting portion that are arranged side by side in the left-right direction, and the third connecting portion includes a second axis extending in the left-right direction. a third shaft portion that is disposed on the frame and that connects the second shaft portion and the frame, and a third shaft portion that extends in the left-right direction behind the second shaft portion, and is disposed on the cargo transport trolley and is connected to the first a third connecting portion of the three-axis portion and the cargo transporting trolley, and a fifth connecting portion that connects the second shaft portion and the third shaft portion; and the fourth connecting portion includes the second shaft portion that is arranged side by side in the left-right direction and along the left and right sides The fourth axis of the direction extension, a bearing portion that supports the fourth shaft portion, a sixth connection portion that is provided on the frame, and a seventh connection portion that is provided on the cargo transport vehicle, and the sixth connection portion and the seventh connection portion pass through the fourth shaft portion. The fourth connection portion is provided so as to be swingable in the vertical direction around the third shaft portion, and the fifth connection portion is provided so as to be swingable in the vertical direction around the second shaft portion. The third shaft portion is pivoted in the vertical direction around the center, and the bearing portion supports the fourth shaft portion such that the fourth shaft portion is swingable about the swing axis.

The vehicle according to claim 5 is characterized in that the sixth connecting portion connects the bearing portion and the frame, and the seventh connecting portion connects the fourth shaft portion and the cargo transporting trolley.

The vehicle of claim 7 is characterized in that: the connecting portion is lower than the upper ends of the pair of rear wheels, and is more forward than the rear ends of the pair of rear wheels. It is located further behind the front end of the pair of rear wheels.

The vehicle of claim 8 is the vehicle of any one of the first aspect to the seventh aspect, characterized in that the joint portion is located between the pair of rear wheels.

The vehicle of claim 9 is characterized in that the caster includes a wheel and an axle that rotatably supports the wheel, and the stowage portion includes: when the caster is at the last side The first stowage portion that is further forward of the axle of the caster and the second stowage portion that is rearward of the axle of the caster, the length of the first stowage portion in the front-rear direction is longer than the length in the front-rear direction of the second stowage portion.

The vehicle of claim 10 is the vehicle of claim 9, characterized in that The area of the first stowage portion in plan view is larger than the area of the second stowage portion in plan view.

The vehicle of claim 11 is the vehicle of any one of claims 1 to 10, wherein the diameter of the wheel of the caster is smaller than the diameter of the rear wheel.

The vehicle of claim 12 is the vehicle of any one of the first aspect to the eleventh aspect, wherein the vehicle further comprises: a crank disposed further forward of the axle of the pair of rear wheels; a pair of pedals Provided at both ends of the crank; a transmission mechanism that transmits the torque of the crank to at least one of the pair of rear wheels; the front end of the stowage portion is located further ahead of the axle of the pair of rear wheels and is more rotated than the pair of pedals rear.

The vehicle of claim 13 is characterized in that, in the vehicle of any one of the first to fourth aspects, the caster does not protrude to the left or right side of the more stowage portion when the caster rotates about the rotation axis.

A vehicle according to any one of claims 1 to 13 is characterized in that, when the caster is rotated about the rotation axis, the caster does not protrude further toward the more load-bearing portion.

The vehicle according to any one of the first aspect of the present invention, wherein the cargo transporting trolley further includes a first restricting mechanism that restricts the caster from swinging in the left-right direction.

A vehicle according to any one of claims 1 to 15, wherein the cargo transporting trolley further comprises: a swingingly disposed front side of the caster and supporting the stowage portion The foot frame member and the second limiter that can limit the swinging motion of the foot frame member And the foot frame member includes one pair of auxiliary casters arranged side by side along the left and right.

In the vehicle according to the first aspect of the invention, the cargo transporting trolley is coupled to the vehicle frame so as to be swingable in the vertical direction with respect to the frame by the connecting portion and cannot swing in the left-right direction with respect to the frame. In this case, since the cargo transporting trolley can be swung in the vertical direction with respect to the vehicle frame, even if the cargo transporting trolley moves up and down due to the unevenness of the ground or the like, the frame can be prevented from moving up and down in conjunction with the cargo transporting trolley. . Thereby, the vehicle can be driven comfortably. In addition, since the vehicle can be prevented from swinging in the left-right direction with respect to the rack-cargo transporting carriage, for example, even if the vehicle changes the traveling direction while traveling, the carriage and the cargo transporting trolley can be prevented from being substantially bent as a center around the connecting portion. Word shape. In this case, since the rear portion of the frame is pushed obliquely by the cargo transporting trolley when the traveling direction of the vehicle is prevented, the maneuverability of the vehicle can be improved. In addition, since the frame and the cargo transporting trolley can be prevented from being bent in a substantially U-shape around the connecting portion, it is possible to prevent the rear portion of the frame from being pushed obliquely when the vehicle is braked. . Thereby, it is possible to prevent the vehicle from rotating around the front wheel when the brake is applied. As a result, the vehicle can be stopped smoothly. Further, since the caster train of the cargo transporting trolley is provided so as to be rotatable about a rotational axis extending in the vertical direction, the traveling direction of the cargo transport trolley can be smoothly changed in accordance with the traveling direction of the vehicle. Further, in the vehicle, the front end of the stowage portion of the cargo transporting trolley is disposed further forward than the rear end of the pair of rear wheels. In this case, the length of the stowage portion in the front-rear direction can be sufficiently ensured, and the total length of the vehicle including the cargo transporting trolley can be prevented from becoming long. Thereby, even in a narrow place such as an alley, the vehicle can be driven with good maneuverability. Further, in the In the vehicle, the front end of the stowage portion of the cargo handling trolley is disposed below the upper ends of the pair of rear wheels. In this case, the position of the stowage portion can be prevented from becoming high, so that the stowage portion can be stably supported by the frame. Thereby, the goods can be handled smoothly.

In the vehicle of the second aspect, the first shaft portion extending in the left-right direction, the first connection portion connecting the first shaft portion and the frame, and the second connection connecting the first shaft portion and the cargo transport trolley can be used. Since the connecting portion is formed in the portion, the connecting portion can be realized with a simple configuration.

According to the vehicle of the third aspect, the frame and the cargo transporting trolley can be connected by the first connecting portion and the second connecting portion which are arranged side by side in the left-right direction, so that the frame and the cargo transport trolley can be connected more stably. .

In the vehicle of the fourth aspect, even when a large amount of cargo is loaded in the stowage portion, the stowage portion can be stably supported by the first caster and the second caster. Further, in the vehicle, the cargo transport trolley is coupled to the frame so as to be swingable about an imaginary swing axis extending in the front-rear direction. That is, in this vehicle, the cargo transport trolley can be swung around the swing axis with respect to the frame. Therefore, even when one of the first caster and the second caster is lifted by the convex portion of the floor or the like, it is possible to prevent a large torsional stress from being generated between the frame and the cargo transport trolley. As a result, the strength design of the frame can be performed relatively easily.

In the vehicle according to the fifth aspect of the invention, the frame and the cargo transporting carriage are connected by the third connecting portion and the fourth connecting portion which are arranged side by side in the horizontal direction, so that the frame and the cargo transporting trolley can be connected more stably.

Further, in the vehicle, the fourth connecting portion includes: a fourth shaft portion and a support portion a bearing portion of the four-axis portion, a sixth connecting portion provided on the frame, and a seventh connecting portion provided on the cargo transporting trolley, and the bearing portion is a swinging shaft that can extend around the front-rear direction with the fourth shaft portion The fourth shaft portion is supported by the swinging manner. With this configuration, the cargo transport trolley can be swung around the swing axis. Further, the third connecting portion includes a second shaft portion that is arranged in the left-right direction with respect to the fourth shaft portion, a third connecting portion that connects the second shaft portion and the frame, and extends in the left-right direction from the second shaft portion. The third shaft portion, the fourth connection portion that connects the third shaft portion and the cargo transport vehicle, and the fifth connection portion that connects the second shaft portion and the third shaft portion, and the fifth connection portion is provided to be capable of The two shaft portions are pivoted in the vertical direction around the center portion, and are swingable in the vertical direction around the third shaft portion. With this configuration, the fourth connection portion provided on the cargo transport vehicle is swung in the vertical direction around the second shaft portion at a position spaced apart from the second shaft portion. Therefore, when the cargo transporting trolley is rocked around the swinging shaft, the fourth connecting portion provided on the cargo transporting trolley can swing in the vertical direction around the second shaft portion. Thereby, it is possible to prevent the second shaft portion from swinging in the vertical direction when the cargo transporting trolley is rocked. As a result, it is possible to prevent the rocking motion of the cargo transporting trolley from being transmitted to the vehicle frame, so that the vehicle can be driven more comfortably.

In the vehicle of claim 6, the sixth connecting portion connects the bearing portion and the frame, and the seventh connecting portion connects the fourth shaft portion and the cargo transporting trolley. In this case, the frame and the cargo transporting carriage can be coupled to each other by the sixth connecting portion, the bearing portion, the fourth connecting portion, and the seventh connecting portion. Therefore, the fourth connecting portion can be realized with a simple configuration.

In the vehicle of claim 7, the connecting portion is at the upper end of the pair of rear wheels. Below, it is located further forward than the rear end of the pair of rear wheels and more rearward than the front ends of the pair of rear wheels. Here, in a vehicle having a pair of rear wheels, an axle support portion for supporting an axle of a pair of rear wheels is usually provided at a rear portion of the frame. Further, in a vehicle having a pair of rear wheels, in many cases, since the cargo is accumulated in the rear portion of the vehicle, the axle support portion is configured to be high in strength so as to be able to withstand a large load. In the vehicle, as described above, since the connecting portion is located below the upper ends of the pair of rear wheels, and is located further forward than the rear ends of the pair of rear wheels and later than the front ends of the pair of rear wheels, the connecting portion can be disposed Near the axle support. In this case, since the high-strength axle support portion can be used to support the cargo transport trolley, it is not necessary to provide another member on the frame to support the cargo transport trolley. Thereby, the composition of the frame can be made simpler. As a result, the frame can be configured lightly, and the maneuverability of the vehicle can be improved.

In the vehicle of claim 8, since the connecting portion is located between the pair of rear wheels, the width of the vehicle can be prevented from widening by providing the connecting portion. Thereby, the excellent maneuverability of the vehicle can be obtained even in a narrow place or the like.

In the vehicle of the ninth aspect, the stowage portion includes: a first stowage portion that is further forward than the axle of the caster when the caster is at the rearmost side, and a second stowage portion that is rearward of the axle of the caster, and the first stowage portion The length in the front and rear directions is longer than the length in the front and rear directions of the second stowage portion. In this case, it is possible to prevent the weight of the cargo loaded in the second stowage portion from being heavier than the weight of the cargo loaded in the first stowage portion. Thereby, when the vehicle is traveling, the weight of the cargo loaded by the second stowage portion can be prevented from being centered on the grounding point of the caster. It is intended to lift the force of the front part of the cargo handling trolley to the cargo handling trolley. Thereby, the vehicle can be driven more smoothly.

According to the vehicle of claim 10, since the area of the first loading portion in plan view is larger than the area of the second loading portion in plan view, the weight of the cargo loaded on the second loading portion can be sufficiently prevented from being loaded by the first loading portion. The weight of the goods.

In the vehicle of the eleventh aspect, since the diameter of the wheel of the caster is smaller than the diameter of the rear wheel, the stowage portion can be disposed further below. Thereby, the stowage portion can be more stably supported by the frame and the casters, so that the vehicle can be smoothly driven.

In the vehicle of claim 12, since the front end of the stowage portion is located further forward than the axle of the pair of rear wheels and further behind the rotating track of the pair of pedals, the foot of the occupant can be prevented from contacting the stowage portion, and the stowage can be carried out. The front end of the section is placed as far as possible in front. Thereby, the comfort of the vehicle can be maintained and the stowage portion can be sufficiently enlarged.

In the vehicle of the thirteenth aspect, since the caster does not protrude to the left or the right side of the more accumulated portion when the caster rotates around the rotating shaft, it can be prevented even when passing through a narrow roadway or the like where the road width is narrow. The casters touch the wall and the like. Thereby, the vehicle can be smoothly driven.

In the vehicle of the fourteenth aspect, since the caster does not protrude further toward the more loaded portion when the caster rotates around the rotating shaft, the caster does not become an obstacle when loading and unloading the cargo. Thereby, operability can be improved. Further, even if a baffle or a railing such as a rearward opening at the rear end of the stowage portion is opened toward the rear to prevent the falling of the cargo, the baffle plate or the like can be prevented. Touch the casters. In this case, since the shutter or the like can be fully opened, the loading and unloading of the cargo can be facilitated.

In the vehicle of the fifteenth aspect, for example, when the cargo transporting trolley is separated from the vehicle frame, the caster can be restricted from swinging in the left-right direction by the first restricting mechanism. With this, even if the delivery person pushes the cargo transporting trolley so that the traveling direction of the caster side becomes forward, the caster side of the cargo transporting trolley can be prevented from swinging sideways. As a result, the traveling direction of the cargo handling trolley is stable and it is easy to carry the goods.

In the vehicle of claim 16, for example, when the cargo handling trolley is separated from the frame, the foot restraint member can be restrained by the second restricting mechanism in order to maintain the state in which the pair of auxiliary casters contact the ground. Swing. In this case, since the stowage portion of the cargo transporting trolley is supported by the leg member (a pair of auxiliary casters) and the casters, the stowage portion can be more easily stabilized when the delivery person carries the cargo. This can reduce the burden on the delivery person.

Furthermore, the "upper end of the pair of rear wheels" refers to the upper end of the rear wheel when the upper end of one rear wheel is located above the upper end of the other rear wheel. The "rear end of the rear wheel" refers to the rear end of the rear wheel when the rear end of one rear wheel is located further rearward than the rear end of the other rear wheel. The "front end of a pair of rear wheels" refers to the front end of a rear wheel when the front end of one rear wheel is more forward than the front end of the other rear wheel.

According to the present invention, it is possible to obtain a vehicle which is excellent in overall length and which is excellent in maneuverability, including a trolley for cargo transportation.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following, a three-wheeled bicycle as an example of the vehicle of the present invention will be described. The left and right, front and rear, and up and down of the embodiment of the present invention refer to the left and right, front and rear, and up and down of the state in which the rider is seated on the seat portion 92 of the three-wheeled bicycle 10 toward the handle 82.

Referring to Fig. 1, a three-wheeled bicycle 10 includes a bicycle body 12 and a cargo transporting carriage 14 (hereinafter, abbreviated as a trolley 14). The bicycle body 12 includes a frame 16 that extends in the front-rear direction. The frame 16 includes a head tube 18, a lower tube 20, a seat tube 22, a bracket portion 24, a pair of rear lower forks 26 (only one of which is illustrated in Fig. 1), and a pair of rear upper forks 28 (only in Fig. 1) One) and the rear wheel support unit 30 (see FIG. 3 below).

The head tube 18 is disposed at the front end of the frame 16. The lower tube 20 is provided to extend from the head tube 18 toward the obliquely rear lower side. The seat tube 22 is provided to extend obliquely from the rear end portion of the lower tube 20 toward the upper rear side. The bracket portion 24 is provided to extend rearward from the rear end portion of the lower tube 20 and the lower end portion of the seat tube 22.

Referring to Fig. 2, the pair of rear lower forks 26 are provided so as to extend rearward from the rear end portion of the bracket portion 24 (see Fig. 1) and to be widened from each other at the rear side (in the left-right direction). A reinforcing tube 32 is provided in such a manner as to connect a pair of rear lower forks 26. In addition, in FIG. 2, in order to avoid complication of illustration, the trolley 14 is not shown.

Referring to Fig. 1, a pair of rear upper forks 28 are provided to extend obliquely rearward and downward from the upper end portion of the seat tube 22. a pair of rear upper forks 28 are respectively connected to the lower end Connected to a pair of rear forks 26. Further, in FIG. 2, in order to avoid complication of the illustration, the rear upper fork 28 is not shown.

2 and 3, the rear wheel support unit 30 includes support pipes 34a and 34b which are provided to extend rearward in the left-right direction from the rear lower fork 26 (refer to FIG. 2). The support tubes 34a, 34b are disposed in parallel with each other and side by side. Further, the support pipes 34a and 34b function as an axle support portion for supporting the axle 110 of the left rear wheel 108 and the axle 116 of the right rear wheel 114, and are constructed to be high-strength so as to withstand a large load. .

Figure 4 is a cross-sectional view taken along line A-A of Figure 2. Referring also to Fig. 4, a bracket 36 is provided at the left end of the support tubes 34a, 34b (see Figs. 2 and 3). The support tubes 34a, 34b and the bracket 36 are joined by, for example, welding. A bracket 38 is provided on the left side of the bracket 36 so as to face the bracket 36. Referring to Fig. 3, the bracket 36 and the bracket 38 are connected by the fender brackets 40a, 40b. The fender brackets 40a, 40b are joined to the brackets 36, 38 by, for example, welding. Referring to Figures 2 and 3, the fender bracket 40a extends obliquely from the brackets 36, 38 in a front-rear direction as viewed in a semi-elliptical shape. The fender bracket 40b extends obliquely rearward from the brackets 36, 38 in a plan view as viewed in a semi-elliptical shape. Referring to Fig. 1 and Fig. 4, a fender 42 is attached to the fender brackets 40a and 40b (see Fig. 1).

Referring to Figs. 2 to 4, brackets 44 are provided at the right end portions of the support pipes 34a and 34b (see Figs. 2 and 3). The support tubes 34a, 34b and the bracket 44 are joined by, for example, welding. A bracket 46 is provided on the right side of the bracket 44 so as to face the bracket 44. Referring to Figure 3, the bracket 44 and the bracket 46 are supported by fenders. The shelves 48a, 48b are connected. The fender brackets 48a, 48b each have the same configuration as the fender brackets 40a, 40b, and are joined to the brackets 44, 46 by, for example, welding. Referring to Fig. 4, a fender 50 is attached to the fender brackets 48a, 48b (only the fender bracket 48a is illustrated in Fig. 4).

Referring to Fig. 2 and Fig. 4, connecting units 52 and 54 are provided on the support pipes 34a and 34b. The connection units 52 and 54 are arranged side by side in the left-right direction so as to correspond to the pair of the rear lower forks 26, respectively.

5 is an enlarged view of the connecting unit 52, FIG. 5(a) is a front view of the connecting unit 52, and FIG. 5(b) is a cross-sectional view taken along line B-B of FIG. 5(a). Referring to Fig. 5, the coupling unit 52 includes plate-like grip members 56, 58 which are provided to sandwich the support tubes 34a, 34b from above and below.

Referring to Fig. 5(b), the grip member 56 includes an inclined portion 56a which extends from the bottom toward the upper side in a manner inclined rearward, and a curved portion 56b which is formed from the upper end of the inclined portion 56a along the support tube 34a. The outer peripheral surface is curved to extend rearward; the flat portion 56c extends linearly from the rear end of the curved portion 56b toward the rear; and the hook portion 56d is bent from the rear end of the flat portion 56c along the outer peripheral surface of the support tube 34b. The way it extends along the back. The grip member 58 includes an inclined portion 58a that extends from the bottom toward the top in a manner inclined rearward, and a curved portion 58b that is bent from the upper end of the inclined portion 58a and is rearward in such a manner as to contact the lower end of the support tube 34a. And a flat portion 58c that linearly extends rearward from the rear end of the curved portion 58b so as to contact the lower end of the support tube 34b. The inclined portion 56a and the inclined portion 58a are joined by, for example, welding so that the grip members 56, 58 are pressed against the support tubes 34a, 34b. Thereby, the grip members 56, 58 are fixed to the support tubes 34a, 34b.

Referring to Fig. 5(a), the plate-like support members 60, 62 are spaced apart from each other side by side so as to extend upward from the grip member 56. The upper end portion of the support member 60 is curved in such a manner as to expand in the left direction. Referring to Figures 5(a) and (b), one of the pair of rear lower forks 26 is coupled to the inclined portion 56a of the grip member 56. One of the ends of the rear lower fork 26 is held by the support members 60, 62. One of the rear lower forks 26 is joined to the grip member 56 and the support members 60, 62 by, for example, welding. Thereby, one of the rear lower forks 26 and the support pipes 34a and 34b are coupled via the joint unit 52 (grip members 56, 58).

A cylindrical collar 64 is provided to support the upper ends of the support members 60, 62. The support members 60, 62 and the collar 64 are joined by, for example, welding. A cylindrical eyelet bushing 66 is fitted into the collar 64. The eyelet bushing 66 includes a cylindrical outer tube 66a that is coaxially provided, a cylindrical elastic member 66b, and a cylindrical inner tube 66c. The elastic member 66b contains, for example, rubber. The elastic member 66b is, for example, baked (sulphurized) with respect to each of the outer cylinder 66a and the inner cylinder 66c. The collar 64 and the eyelet bushing 66 are used to connect the bicycle body 12 (Fig. 1) with the trolley 14 (Fig. 1). Details are described below.

Referring to FIG. 4, the coupling unit 54 has the same configuration as the coupling unit 52, and includes grip members 68, 70, support members 72, 74, a collar 76, and an eyelet bushing 78. The eyelet bushing 78 is the same as the eyelet bushing 66 and includes an outer cylinder, an elastic member, and an inner cylinder. The other of the pair of rear lower forks 26 is joined to the grip member 68 and the support members 72, 74 by, for example, welding. Thereby, the other rear fork 26 and the support pipes 34a and 34b are connected via the connection unit 54 (grip members 68, 70).

Referring to Figure 1, the handle post 80 is rotatably inserted into the head tube 18. A handle 82 is fixed to the upper end of the handle post 80. A brake lever (not shown) is provided on the handle 82, and the rider can brake the three-wheeled bicycle 10 by operating the brake lever. A front fork 84 is fixed to the lower end of the handle post 80. The front wheel 86 is rotatably supported at the lower end of the front fork 84 via an axle. The front wheel 86 includes a wheel 87 rotatably supported on the axle and a tire 88 mounted on the wheel 87. In the three-wheeled bicycle 10, the front wheel 86 is redirected left and right by turning the handle 82 to the left and right. Thereby, the direction of the three-wheeled bicycle 10 can be changed.

A seat post 90 is inserted into the seat tube 22. A seat portion 92 is provided at an upper end portion of the seat post 90. A drive unit 94 is provided on the bracket portion 24. The drive unit 94 includes a crank 96, a pair of pedals 98a, 98b, a drive sprocket 100, and an electric motor 102. The crank 96 includes a crank journal 96a that is rotatably disposed below the bracket portion 24 in the left-right direction, a crank arm 96b that is disposed at a left end portion of the crank journal 96a, and a crank arm 96c. It is disposed at the right end of the crank journal 96a. The pedal 98a is rotatably provided at the front end of the crank arm 96b via a spindle, and the pedal 98b is rotatably provided at the front end of the crank arm 96c via a spindle. The crank 96 is rotated by the rider pressing the pedals 98a, 98b. Further, the rotation locus X1 of the pedals 98a, 98b when the crank 96 is rotated in Fig. 1 is indicated by a one-dot chain line.

The drive sprocket 100 is attached to the crank journal 96a via a one-way clutch (not shown) so as to rotate in accordance with the one-way rotation of the crank journal 96a. The drive sprocket 100 is coupled to a driven sprocket (not shown) provided at a lower portion of the rear wheel support unit 30 via the endless chain 104. The electric motor 102 is disposed obliquely below the crank journal 96a and is generated to assist the rotation of the crank 96. Torque. A battery 106 for storing electric power for driving the electric motor 102 or the like is provided on the drive unit 94 further than the seat tube 22.

Referring to FIGS. 1 and 2, the left rear wheel 108 is rotatably supported by the bracket 36 (see FIG. 2) of the rear wheel support unit 30 and the bracket 38 via the axle 110. The left rear wheel 108 includes a wheel 111 rotatably supported on the axle 110 and a tire 112 mounted on the wheel 111. Further, in Fig. 1, in order to avoid complication of the illustration, the illustration of one of the portions of the wheel 111 (one of the plurality of spokes) is omitted.

Referring to FIG. 2, the right rear wheel 114 is rotatably supported by the bracket 44 and the bracket 46 via the axle 116. The right rear wheel 114 includes a wheel 117 rotatably supported on the axle 116 and a tire 118 mounted on the wheel 117. Further, although not shown in the drawings to avoid complication, the driven sprocket (not shown) and the left rear wheel 108 are coupled by a transmission mechanism (not shown). Referring to Fig. 1, in the bicycle body 12, the occupant steps on the pedals 98a, 98b to rotate the crank 96 in one direction, whereby the rotational force of the crank 96 passes through the drive sprocket 100, the chain 104, and the driven sprocket ( Not shown) and the transmission mechanism (not shown) is transmitted to the left rear wheel 108. Thereby, the left rear wheel 108 rotates, so that the bicycle body 12 advances.

6 is an enlarged view of the bogie 14, FIG. 6(a) is a plan view of the bogie 14, and FIG. 6(b) is a left side view of the bogie 14.

Referring to Fig. 6, the carriage 14 includes: a stowage portion 120; a railing portion 122 that is disposed to extend upward from the stowage portion 120 to prevent the cargo loaded by the stowage portion 120 from falling; the handle portion 124 is self-contained The upper portion of the railing portion 122 is disposed to extend forward; the foot frame member 126 is disposed in the product a front portion of the carrier portion 120; and a caster 128 disposed at a rear portion of the stowage portion 120. The connection units 130 and 132 are provided at the front end of the accumulation unit 120 (see FIG. 6( a )).

The stowage portion 120 includes a pair of side frames 134, 136 (refer to FIG. 6(a)) which are arranged side by side and extend in the front-rear direction; the front frame 138 is connected to the front end and the side frame of the side frame 134 136 (refer to FIG. 6 (a)) before the end portion extends in the left-right direction; the rear frame 140 is extended in the left-right direction by connecting the rear end portion of the side frame 134 and the rear end portion of the side frame 136; and the intermediate frame 142, 144 are extending between the front frame 138 and the rear frame 140 in the left-right direction by connecting the side frame 134 and the side frame 136.

Referring to Fig. 6(a), a reinforcing frame 146 extending in the front-rear direction so as to connect the central portion of the front frame 138 and the central portion of the intermediate frame 142 is provided. On the left side of the reinforced frame 146, a reinforcing frame 148 extending from the front frame 138 in the obliquely rear left direction is provided to connect the front frame 138 and the side frame 134. On the right side of the reinforced frame 146, a reinforcing frame 150 extending from the front frame 138 in the obliquely rearward right direction is provided in a manner to connect the front frame 138 and the side frame 136.

A reinforcing frame 152 extending in the front-rear direction so as to connect the central portion of the intermediate frame 142 and the central portion of the intermediate frame 144 is provided. A reinforcing frame 154 extending in the front-rear direction to connect the intermediate frame 144 and the rear frame 140 is disposed on the left side of the reinforced frame 152. A reinforcing frame 156 extending in the front-rear direction to connect the intermediate frame 144 and the rear frame 140 is disposed on the right side of the reinforcing frame 154. Between the intermediate frame 144 and the rear frame 140 A reinforcing frame 158 is provided in such a manner as to connect the reinforcing frame 154 and the reinforcing frame 156. In order to close the rectangular area formed by the intermediate frame 144, the reinforcing frame 154, the reinforcing frame 156 and the reinforcing frame 158, the bottom surface of the intermediate frame 144, the reinforcing frame 154, the reinforcing frame 156 and the reinforcing frame 158 are closed. A plate member 160 is fixed to the portion. The plate member 160 is joined to the intermediate frame 144, the reinforcing frame 154, the reinforcing frame 156, and the reinforcing frame 158 by, for example, welding. Further, the plate member 160 has a circular through hole at a central portion thereof, and an upper end portion of the bearing unit 176 described below is inserted into the through hole.

6 (a) and (b), the caster 128 includes a wheel 162, an axle 164, and a support frame 166 that rotatably supports the wheel 162 via the axle 164. Referring to FIG. 6(b), the wheel 162 includes a wheel 167 rotatably supported on the axle 164 and a tire 168 mounted on the wheel 167. Referring to Fig. 1, the diameter of the wheel 162 is smaller than the diameter of the left rear wheel 108 and the diameter of the right rear wheel 114 (refer to Fig. 2).

Referring to Fig. 6, the support frame 166 includes a wheel support portion 170 extending obliquely upward from the axle 164 and a connecting portion 172 extending upward from the wheel support portion 170 as viewed in a plan view in a semi-elliptical shape. A connecting member 174 including a shaft portion 174a extending in the vertical direction is fixed to the upper end of the connecting portion 172 (see FIG. 6(b)). The shaft portion 174a of the connecting member 174 is rotatably supported by the bearing unit 176. The bearing unit 176 is held by a circular fixing plate 178 fixed to the lower surface of the plate member 160. Thereby, the stowage portion 120 is connected to the caster 128, and the rear portion of the stowage portion 120 is supported by the caster 128.

In the carriage 14, since the shaft portion 174a of the connecting member 174 is rotatably supported by the bearing unit 176, the support frame 166 can be rotated about the shaft portion 174a. Thereby, the caster 128 can be the shaft portion 174a with respect to the stowage portion 120. Rotate at the center. Specifically, as shown in FIG. 6( a ), the caster 128 rotates around the shaft portion 174 a as in the drawing of the track X2 . At this time, the caster 128 does not protrude further rearward than the load carrying portion 120 and further in the left-right direction than the load carrying portion 120 in plan view. Further, the shaft portion 174a is located at an intermediate point between the side frame 134 and the side frame 136. That is, the shaft portion 174a is located at the center portion in the left-right direction of the stowage portion 120.

Referring to Fig. 6, in the case where the loader 120 is located at the rearmost side of the caster 128, the area of the first region 120a which is further forward than the axis of the axle 164 is larger than the second region which is further behind the axis of the axle 164. 120b is the area under the overlook. Further, the length of the first region 120a in the front-rear direction is longer than the length of the second region 120b in the front-rear direction.

Referring to FIG. 6 and FIG. 10 below, the railing portion 122 includes: a U-shaped frame 180 which is disposed to extend upward from the front end portions of the side frames 134, 136 and has an inverted U shape in front view; a frame 182 (refer to FIG. 6) which is connected to the rear end portion of the U-shaped frame 180 and the side frame 134 above the side frame 134 and has an L-shape in a side view; and an L-shaped frame 184 (refer to FIG. 6(a)) The U-shaped frame 180 and the side frame 136 (see FIG. 6(a)) are connected to the rear side of the side frame 136 and have an L-shape in a side view. Further, the railing portion 122 further includes a reinforcing frame 186 which is disposed to extend in the left-right direction at a substantially central portion of the upper direction of the U-shaped frame 180. The support frames 188 and 190 (refer to FIG. 6) are attached to each other. The U-shaped frame 180 is further extended in the up-and-down direction so as to connect the side frame 134 and the L-shaped frame 182 (refer to FIG. 6); and the support frames 192 and 194 (refer to FIG. 6(a)), which are attached to the U-shaped frame. 180 is further rearward by connecting the side frame 136 and the L-shaped frame 184 (refer to FIG. 6(a)). Extend in the downward direction.

6 and 10, the handle portion 124 includes a handle frame 196 extending forward from the U-shaped frame 180 and having an approximately U-shape in plan view, and a pair of support frames 198a, 198b (refer to FIG. 10) The handle frame 196 and the U-shaped frame 180 are coupled in a manner to support the handle frame 196.

Referring to FIG. 6(b), the leg member 126 includes a pair of leg portions 126a connected to the side frames 134, 136 (refer to FIG. 6(a)) (only the side frame 134 is illustrated in FIG. 6(b). Foot 126a). Further, in FIG. 6(a), in order to avoid complication of the drawings, the pair of leg portions 126a are not shown. Referring to FIG. 6(b), one of the pair of leg portions 126a is rotatably supported by the bracket 134a provided on the side frame 134 via the support shaft 126b, and the other of the pair of leg portions 126a (not shown) The bracket is rotatably supported by a bracket (not shown) provided on the side frame 136 (see FIG. 6( a )) via a support shaft (not shown). Referring to Figs. 6(a) and 6(b), a cross member 126c extending in the left-right direction so as to connect the pair of leg portions 126a (see Fig. 6(b)) is provided. When the trolley 14 is not coupled to the bicycle body 12, as shown in FIG. 6(b), the carriage 14 is supported by the base member 126 and the casters 128. Referring to Fig. 1, when the cart 14 is coupled to the bicycle body 12, the leg member 126 is held substantially parallel to the side frame 134 of the stowage portion 120.

Referring to Fig. 6(a), the coupling units 130, 132 are attached to the front frame 138 so as to be side by side. 7 is an enlarged view of the connecting unit 130, FIG. 7(a) is a plan view showing the connecting unit 130, FIG. 7(b) is a front view of the connecting unit 130, and FIG. 7(c) is a left side view showing the connecting unit 130. .

Referring to FIG. 7, the connecting unit 130 includes a bracket 200, a connecting member 202, and The plate 204 is fixed. The bracket 200 includes a flat plate portion 200a extending in the left-right direction and arm portions 200b and 200c extending forward from both end portions of the flat plate portion 200a (see FIGS. 7(a) and (b)). The flat plate portion 200a of the bracket 200 is joined to the front end surface 138a of the front frame 138 by, for example, welding. Referring to FIGS. 7(a) and 7(b), the arm portions 200b and 200c each have through holes 200d and 200e that penetrate in the left-right direction. A disk-shaped reinforcing member 206 is fixed to the left side surface of the arm portion 200b. The reinforcing member 206 includes a through hole 206a that communicates with the through hole 200d of the arm portion 200b. A disk-shaped reinforcing member 208 is fixed to the right side surface of the arm portion 200c. The reinforcing member 208 includes a through hole 208a that communicates with the through hole 200e of the arm portion 200c.

The coupling member 202 includes a shaft portion 202a extending in the left-right direction and an operation portion 202b extending downward from the right end portion of the shaft portion 202a. The shaft portion 202a is inserted into the through hole 208a, the through hole 200e, the through hole 200d, and the through hole 206a. An annular locking member 210 is fixed to the right end portion of the shaft portion 202a. A coil spring 212 is disposed coaxially with the shaft portion 202a between the locking member 210 and the reinforcing member 208. The coil spring 212 presses the joint member 202 in the right direction.

The fixing plate 204 includes a joint portion 204a (refer to FIGS. 7(b) and (c)) which is joined to the lower end portion of the arm portion 200c and extends downward from the arm portion 200c; the curved portion 204b is self-joining portion 204a The lower end is curvedly extended in the right direction; and the hook portion 204c extends from the rear end portion of the curved portion 204b in the right direction. The joint portion 204a is joined to the lower end portion of the arm portion 200c by, for example, welding. The hook portion 204c is formed so as to extend from the rear end portion of the curved portion 204b to the front side and the right side of the operation portion 202b to the front side of the operation portion 202b. As above Since the connecting member 202 is pressed in the right direction by the coil spring 212, the operating portion 202b of the connecting member 202 is pressed against the hook portion 204c. At this time, the swing operation of the operation portion 202b centering on the shaft portion 202a is restricted by the hook portion 204c. Thereby, the connection member 202 can be prevented from coming off the bracket 200. Further, referring to Fig. 7(a), the distance D1 between the front end 204d of the hook portion 204c and the left and right direction of the curved portion 204b is set larger than the diameter of the operation portion 202b.

Referring to Fig. 8(a), when the connecting member 202 is removed from the bracket 200, the operating portion 202b is moved to the front end 204d of the hook portion 204c by being inserted into the operating portion 202b in the left direction (arrow C1 direction). Left side. Then, referring to Fig. 8(b), the operation portion 202b is rotated in the direction of the arrow C2 around the shaft portion 202a. Finally, referring to FIG. 8(c), the shaft portion 202a is pulled out from the bracket 200 by stretching the operation portion 202b in the right direction (arrow C3 direction). Thereby, the joint member 202 can be removed from the bracket 200. Further, when the connecting member 202 is attached to the bracket 200, the operation opposite to that described above with reference to Figs. 8(a) to 8(c) may be performed.

Referring to Fig. 6(a), the coupling unit 132 has the same configuration as the coupling unit 130, and includes a bracket 214 having the same configuration as the bracket 200, the coupling member 202, and the fixing plate 204, a coupling member 216, and a fixing plate. 218. Further, the coupling member 216 includes the same shaft portion 216a as the shaft portion 202a.

Next, a method of connecting the bicycle body 12 and the bogie 14 will be described. 9 is a plan view showing the rear end portion of the bicycle body 12 and the bogie 14, and FIG. 10 is a front view showing the relationship between the rear wheel support unit 30 and the bogie 14. Furthermore, in FIG. 10, in order to avoid the complication of the illustration, Among the constituent elements of the bogie 14, the components other than the stowage portion 120, the rail portion 122, and the handle portion 124 are omitted.

Referring to FIGS. 9 and 10, when the frame 16 and the carriage 14 of the bicycle body 12 (see FIG. 1) are coupled, the connection unit 52 and the connection unit 130 are connected, and the connection unit 54 and the connection unit 132 are connected. As described above, the coupling units 52, 54 connect the pair of the rear lower fork 26 and the support tubes 34a, 34b of the rear wheel support unit 30. Further, the connecting units 130 and 132 are fixed to the front frame 138 of the bogie 14. Therefore, the rear lower fork 26 and the rear wheel support unit 30 and the bogie 14 can be coupled by connecting the coupling units 52 and 54 and the coupling units 130 and 132. That is, the frame 16 of the bicycle body 12 and the carriage 14 are coupled. Hereinafter, a method of connecting the connection units 52 and 54 and the connection units 130 and 132 will be described in detail.

11 is a view showing a relationship between the connecting unit 52 and the connecting unit 130. FIG. 11(a) is a plan view showing the connecting unit 52 and the connecting unit 130, and FIG. 11(b) is before the connecting unit 52 and the connecting unit 130. FIG. 11(c) shows a left side view of the connection unit 52 and the connection unit 130. In addition, in FIGS. 11( a ) and ( b ), in order to facilitate understanding of the connection structure between the connection unit 52 and the connection unit 130 , the support members 60 and 62 ( FIG. 11( b )) and the collar 64 are shown in cross section. The eye liner 66, the bracket 200, the reinforcing member 206, and the reinforcing member 208.

When the connection unit 52 and the connection unit 130 are connected, first, the connection member 202 is removed from the bracket 200 of the connection unit 130 by the method described in FIG. Referring to FIGS. 11(a) and 11(b), the collar 64 and the eyelet bushing 66 of the coupling unit 52 are disposed between the arm portion 200b of the bracket 200 and the arm portion 200c. The way the trolley 14 is moved. Then, the shaft portion 202a of the coupling member 202 is inserted into the through hole 208a of the reinforcing member 208, the through hole 200e of the bracket 200, the inner tube 66c of the eyelet bushing 66, the through hole 200d of the bracket 200, and the reinforcing member 206. Through hole 206a. Finally, referring to FIG. 11(b), the operation portion 202b of the coupling member 202 is hung on the hook portion 204c of the fixing plate 204 to fix the coupling member 202. Thereby, the connecting unit 52 and the connecting unit 130 are connected. The connection unit 54 (see FIG. 10) and the connection unit 132 (see FIG. 10) are connected by the same method.

In the three-wheeled bicycle 10, the connecting units 52 and 54 and the connecting units 130 and 132 function as a connecting portion, and the shaft portion 174a functions as a rotating shaft, and the front end surface 138a of the front frame 138 corresponds to the front end of the stowage portion, and the shaft portion 202a The shaft portion 216a functions as a first shaft portion, and the coupling unit 52 and the coupling unit 54 function as a first connecting portion, and the bracket 200 and the bracket 214 function as a second connecting portion, and the connecting unit 52 and the connecting portion The unit 130 functions as a first connecting portion, and the connecting unit 54 and the connecting unit 132 function as a second connecting portion. The first region 120a of the stowage portion 120 corresponds to the first stowage portion, and the second region 120b of the stowage portion 120 Corresponding to the second stowage unit, the drive sprocket 100 and the chain 104 are included in the transmission mechanism.

Next, the effect of the three-wheeled bicycle 10 will be described.

In the three-wheeled bicycle 10, the frame 16 of the bicycle body 12 and the bogie 14 are coupled via the connecting units 52 and 54 and the connecting units 130 and 132. Referring to Fig. 11, the coupling unit 52 and the coupling unit 130 are inserted into the through hole 208a of the reinforcing member 208, the through hole 200e of the bracket 200, and the inner tube 66c of the eyelet bushing 66 by inserting the shaft portion 202a of the coupling member 202. , through hole 200d of bracket 200 And the through hole 206a of the reinforcing member 206 is connected. Here, since the inner cylinder 66c of the eyelet bushing 66, the bracket 200, and the reinforcing members 206, 208 are not fixed to the shaft portion 202a, the bracket 200 can be represented by an arrow D in FIG. 11(c). The shaft portion 202a is centered and swings in the vertical direction. Referring to Fig. 9, since the connecting unit 54 and the connecting unit 132 are also connected by the same configuration, the bracket 214 of the connecting unit 132 can also swing in the vertical direction around the shaft portion 216a. Since the bracket 200 and the bracket 214 are fixed to the front frame 138 of the bogie 14, the brackets 200 and 214 can be swung in the up and down direction around the shaft portions 202a and 216a, and the bogie 14 is centered on the shaft portions 202a and 216a. Swing in the up and down direction. Thereby, the carriage 14 can swing in the up and down direction with respect to the frame 16 of the bicycle body 12. In this case, even if the carriage 14 is moved up and down due to the unevenness of the ground or the like, the frame 16 can be prevented from moving up and down in conjunction with the carriage 14. Thereby, the three-wheeled bicycle 10 can be comfortably driven.

Although the connecting members 202 and 216 of the connecting units 130 and 132 are rotatable about the shaft portions 202a and 216a, the movement of the connecting members 202 and 216 in the front-rear direction is prevented by the brackets 200 and 214. Further, the connecting units 52, 54 connecting the shaft portions 202a, 216a and the frame 16 are fixed to the frame 16 (the rear wheel supporting unit 30). Therefore, the shaft portions 202a, 216a can be prevented from moving in the front-rear direction with respect to the frame 16. In this case, since it is possible to prevent any of the connection unit 130 and the connection unit 132 from moving back and forth with respect to the other, it is possible to prevent the carriage 14 from swinging in the left-right direction with respect to the frame 16. Thereby, even if, for example, the three-wheeled bicycle 10 changes the traveling direction while traveling, the frame 16 of the bicycle body 12 and the carriage 14 can be prevented from being bent into a substantially U shape. In this case, since the direction of travel of the three-wheeled bicycle 10 can be prevented from being changed Since the rear portion of the frame 16 of the bicycle body 12 is pushed obliquely by the carriage 14, the maneuverability of the three-wheeled bicycle 10 can be improved. Further, since the frame 16 and the bogie 14 can be prevented from being bent in a substantially U shape, it is possible to prevent the rear portion of the frame 16 from being inclined obliquely by the bogie 14 when the tricycle 10 is braked. Thereby, it is possible to prevent the front wheel 86 of the three-wheeled bicycle 10 from rotating around when the brake is applied. As a result, the three-wheeled bicycle 10 can be smoothly stopped.

Further, referring to Fig. 6, since the caster 128 of the carriage 14 is provided to be rotatable about the shaft portion 174a extending in the vertical direction, the traveling direction of the carriage 14 can be smoothly changed in accordance with the traveling direction of the three-wheeled bicycle 10. Further, referring to Fig. 1, the front end of the stowage portion 120 of the carriage 14 (the front end surface 138a of the front frame 138 (see Fig. 7)) is provided further forward than the rear end of the left rear wheel 108 and the right rear wheel 114 (see Fig. 2). In this case, the length of the stowage portion 120 in the front-rear direction can be sufficiently ensured, and the overall length of the three-wheeled bicycle 10 including the bogie 14 can be prevented from becoming long. Thereby, even in a narrow place such as an alley, the three-wheeled bicycle 10 can be driven with good maneuverability. Further, the front end of the stowage portion 120 of the bogie 14 is disposed below the upper ends of the left rear wheel 108 and the right rear wheel 114 (see FIG. 2). In this case, since the position of the stowage portion 120 can be prevented from becoming high, the stowage portion 120 can be stably supported by the frame 16. Thereby, the goods can be handled smoothly.

Further, referring to Fig. 10, the connecting units 52 and 54 are fixed to the support pipes 34a and 34b. As described above, the support pipes 34a and 34b function as the axle support portions for supporting the axles 110 and 116, and are configured to be high-strength so as to withstand a large load. Therefore, the high-strength support tubes 34a, 34b can be used by fixing the joint units 52, 54 to the support tubes 34a, 34b. As a support for supporting the trolley 14. In this case, since it is not necessary to provide another member on the frame 16 to support the trolley 14, the constitution of the frame 16 can be made simple. Thereby, the frame 16 can be configured lightly, and the maneuverability of the three-wheeled bicycle 10 can be improved.

2, the connecting units 52 and 54 and the connecting units 130 and 132 are disposed between the left rear wheel 108 and the right rear wheel 114. In this case, the width of the tricycle 10 can be prevented from widening by providing the coupling units 52, 54 and the coupling units 130, 132. Thereby, the excellent maneuverability of the three-wheeled bicycle 10 can be obtained even in a narrow place or the like.

Further, referring to Fig. 6, in the stowage portion 120, the length of the first region 120a in the front-rear direction is longer than the length in the front-rear direction of the second region 120b. In this case, it is possible to prevent the weight of the cargo loaded in the second region 120b from being heavier than the weight of the cargo loaded in the first region 120a. Therefore, when the three-wheeled bicycle 10 is driven, the front portion of the trolley 14 can be prevented from being centered on the ground point P (see FIG. 6(b)) of the caster 128 by the weight of the cargo loaded in the second region 120b. The force of the upper lift acts on the trolley 14. Thereby, the three-wheeled bicycle 10 can be driven more smoothly.

Further, the area of the first region 120a in plan view is larger than the area of the second region 120b in plan view. In this case, it is possible to sufficiently prevent the weight of the cargo loaded in the second region 120b from being heavier than the weight of the cargo loaded in the first region 120a.

Further, the diameter of the wheel 162 of the caster 128 is smaller than the diameter of the left rear wheel 108 and the right rear wheel 114. In this case, since the stowage portion 120 can be disposed below, the stowage portion can be more stably supported by the frame 16 and the casters 128. 120. As a result, the three-wheeled bicycle 10 can be smoothly driven.

Referring to Fig. 9, the front end of the stowage portion 120 (the front end surface 138a of the front frame 138 (see Fig. 7)) is disposed further forward of the axle 116 of the left rear wheel 108 and the axle 116 of the right rear wheel 114. Furthermore, referring to Fig. 1, the front end of the stowage portion 120 is located further behind the rotation track X1 of the pair of pedals 98a, 98b. In this way, in the three-wheeled bicycle 10, the foot of the occupant is prevented from coming into contact with the stowage portion 120, and the front end of the stowage portion 120 is sufficiently placed in front. Thereby, the comfortable maneuverability of the three-wheeled bicycle 10 can be maintained, and the stowage portion 120 can be sufficiently enlarged.

Further, referring to Fig. 6, when the caster 128 is rotated about the shaft portion 174a, the caster 128 does not protrude to the left or right side of the stowage portion 120. Thereby, even when a road having a narrow road width such as an alley is passed, the caster 128 can be prevented from contacting the wall or the like. As a result, the three-wheeled bicycle 10 can be smoothly driven.

Further, since the caster 128 does not protrude rearward of the stowage portion 120 when the caster 128 rotates around the shaft portion 174a, the caster 128 does not become an obstacle when loading and unloading the cargo. Thereby, operability can be improved. Further, even if a baffle or a rail or the like which is opened rearward with the lower end as the center at the end portion of the stowage portion 120 is provided to prevent the cargo from falling, the baffle or the like can be prevented from contacting the caster 128. In this case, since the shutter or the like can be fully opened, the loading and unloading of the cargo is easy.

Further, in the three-wheeled bicycle 10, the shaft portion 202a of the coupling member 202 is inserted into the eyelet bushing 66 including the elastic member 66b. Similarly, the shaft portion 216a of the coupling member 216 is inserted into the eyelet bushing 78 including the elastic member. In this case, even if vibration occurs on the bogie 14, the vibration can be reduced on the eye bushings 66, 78. Thereby, because it can prevent a large vibration The moving trolley 14 is transferred to the frame 16 of the bicycle body 12, so that the three-wheeled bicycle 10 can be driven more comfortably.

Further, in the three-wheeled bicycle 10, the carriage 14 is not attached to the rear of the frame 16 . In this case, the length of the front and rear directions of the three-wheeled bicycle 10 can be surely shortened as compared with the case where the trolley is further placed behind the shelf. Moreover, since the structure for setting the shelf is not required, the configuration of the frame 16 of the bicycle body 12 can be made simple.

Further, in the above embodiment, the connection units 52 and 54 are fixed to the support tubes 34a and 34b, but the connection units 52 and 54 may be fixed to other positions of the frame 16. That is, in this case, the connection units 52 and 54 and the connection units 130 and 132 are disposed behind the left rear wheel 108 and the right rear wheel 114 by lowering the upper ends of the left rear wheel 108 and the right rear wheel 114. The end is further forward and is rearward of the front ends of the left rear wheel 108 and the right rear wheel 114, and the high-strength support pipes 34a, 34b are used as the support portions for supporting the trolley 14. In this case, since it is not necessary to provide another member on the frame 16 to support the trolley 14, the constitution of the frame 16 can be made simple. Thereby, the frame 16 can be configured lightly, thereby improving the maneuverability of the three-wheeled bicycle.

Further, in the above-described embodiment, the frame 16 and the bogie 14 are coupled by the connecting units 52 and 54 disposed on the right and left and the connecting units 130 and 132 disposed on the left and right, but only by the connecting unit 52 and The link unit 130 connects the frame 16 and the bogie 14. In this case, the connection unit 52 and the connection unit 130 are disposed in the center portion of the three-wheeled bicycle 10, for example, in the left-right direction.

Further, in the above embodiment, the case where the cart 14 having one caster 128 is coupled to the bicycle body 12 has been described. A trolley having two casters is coupled to the bicycle body 12. Fig. 12 is a plan view showing the rear portion of the three-wheeled bicycle 10a including the bogie 14a having the first caster 128a and the second caster 128b.

Referring to Fig. 12, the three-wheeled bicycle 10a differs from the above-described three-wheeled bicycle 10 in that a trolley 14a is provided instead of the trolley 14, and the connection unit 52 and the connection unit 130 are connected via the connection unit 220, and a connection unit 54a is provided instead of the connection. Aspects of unit 54 and aspects in which connection unit 222 is provided instead of connection unit 132. Therefore, the configuration of the connection structure (the configuration of the connection unit 220), the connection unit 54a, and the connection unit 222 excluding the bogie 14a, the connection unit 52, and the connection unit 130 will be omitted.

Fig. 13 is an enlarged view of the bogie 14a, Fig. 13(a) is a plan view of the bobbin 14a, and Fig. 13(b) is a left side view of the bobbin 14a. Referring to Fig. 13, the bogie 14a differs from the bogie 14 of Fig. 6 in that the stowage portion 224 is configured and the first caster 128a and the second caster 128b which are arranged in the left-right direction are provided in the stowage portion 224. Therefore, the configuration of the bogie 14a other than the stowage unit 224, the first caster 128a, and the second caster 128b will be omitted.

Referring to Fig. 13(a), the difference between the stowage portion 224 and the stowage portion 120 of Fig. 6 is that the reinforcing frame 226 and the reinforcing frame 228 are provided instead of the reinforcing frame 158, and the plate member 230 and the plate member are provided. 232 replaces aspects of the plate member 160. The reinforcing frame 226 is disposed between the intermediate frame 144 and the rear frame 140 to connect the side frame 134 with the reinforcing frame 154. The reinforcing frame 228 is disposed between the intermediate frame 144 and the rear frame 140 to connect the side frame 136 with the reinforcing frame 156. The plate member 230 is joined to the side frame 134, the intermediate frame 144, the reinforcing frame 154, and the reinforced vehicle by, for example, welding. Rack 226. The plate member 232 is joined to the side frame 136, the intermediate frame 144, the reinforcing frame 156, and the reinforcing frame 228 by, for example, welding.

Referring to FIGS. 13(a) and 13(b), the first caster 128a includes a wheel 162a, an axle 164a, and a support frame 166a similarly to the caster 128. Similarly, referring to Fig. 13 (a), the second caster 128b includes a wheel 162b, an axle 164b, and a support frame 166b. Furthermore, the diameter of the wheels 162a, 162b is smaller than the diameter of the wheel 162 (see Fig. 1).

Referring to Fig. 13 (b), the support frame 166a is attached to the plate member 230 via the connecting member 234 including the shaft portion 234a and the bearing unit 236 in the same manner as the support frame 166 (see Fig. 6). The shaft portion 234a of the connecting member 234 is rotatably supported by the bearing unit 236. Thereby, the support frame 166a can be rotated about the shaft portion 234a with respect to the stowage portion 224. Specifically, as shown in FIG. 13( a ), the first caster 128 a rotates around the center of the shaft portion 234 a as in the drawing of the track X3 . At this time, the first caster 128a does not protrude further rearward than the load carrying portion 224 and further leftward than the load carrying portion 224 in plan view.

Referring to Fig. 13 (a), the support frame 166b is attached to the plate member 232 via the connecting member 238 including the shaft portion 238a and the bearing unit 240, similarly to the support frame 166a. The shaft portion 238a of the connecting member 238 is rotatably supported on the bearing unit 240. Thereby, the support frame 166b can be rotated about the shaft portion 238a with respect to the stowage portion 224. Specifically, the second caster 128b rotates around the shaft portion 238a as in the drawing of the track X4. At this time, the second caster 128b does not protrude rearward of the load carrying portion 224 and further protrudes from the load carrying portion 224 in plan view.

Furthermore, the first region 120a and the second region of the stowage portion 120 shown in FIG. 6 Similarly to 120b, the area of the first region of the stowage portion 224 (the region further forward than the axial center of the axles 164a, 164b when the first caster 128a and the second caster 128b are located at the rearmost side) is larger than the stowage portion in plan view. The area of the second region 224 (the region further behind the axis of the axles 164a, 164b when the first caster 128a and the second caster 128b are located in the last position) is the area in plan view. Further, the length of the first region of the stowage portion 224 in the front-rear direction is longer than the length of the second region in the front-rear direction.

14 is a view showing a relationship between the connection unit 52, the connection unit 220, and the connection unit 130, and FIG. 14(a) is a plan view showing the connection unit 52, the connection unit 220, and the connection unit 130, and FIG. 14(b) is a view showing FIG. Left side view of the connection unit 52, the connection unit 220, and the connection unit 130.

Referring to Fig. 14, the coupling unit 220 includes a bracket 242, a bolt 244, a nut 246 (see Fig. 14 (a)), a swinging member 248, a collar 250, and an eyelet bushing 252 (see Fig. 14 (a)). Referring to Fig. 14 (a), the bracket 242 includes a flat plate portion 242a extending in the left-right direction and arm portions 242b and 242c extending forward from both end portions of the flat plate portion 242a. Each of the arm portions 242b and 242c includes through holes 242d and 242e that penetrate in the left-right direction. A hollow disk-shaped reinforcing member 254 is fixed to the left side surface of the arm portion 242b, and a hollow disk-shaped reinforcing member 256 is fixed to the right side surface of the arm portion 242c.

The bolt 244 includes a shaft portion 244a extending in the left-right direction and a head portion 244b provided at the left end of the shaft portion 244a. The shaft portion 244a is inserted into the reinforcing member 254, the arm portion 242b (through hole 242d), the inner tube 66c, the arm portion 242c (through hole 242e), and the reinforcing member 256. The nut 246 is attached to the right end portion of the shaft portion 244a via the spacer 258. Thereby, the bolt 244 is attached to the bracket 242. again The shaft portion 244a is rotatably provided with respect to the inner cylinder 66c. Thereby, as shown by an arrow E in FIG. 14(b), the bracket 242 is swingably provided in the vertical direction around the shaft portion 244a.

The swinging member 248 is provided in such a manner as to connect the flat plate portion 242a of the bracket 242 and the collar 250. The flat plate portion 242a and the swinging member 248 are joined by, for example, welding. Thereby, the rocking member 248 can swing in the up-and-down direction integrally with the bracket 242 centering on the shaft portion 244a.

Referring to Fig. 14 (a), the collar 250 and the swinging member 248 are joined by, for example, welding. The collar 250 has a cylindrical shape and the eyelet bushing 252 is embedded in the collar 250. The eyelet bushing 252 includes an outer cylinder 252a, an elastic member 252b, and an inner cylinder 252c which are identical to the outer cylinder 66a, the elastic member 66b, and the inner cylinder 66c.

A shaft portion 202a of the coupling unit 130 is inserted into the inner cylinder 252c of the eyelet bushing 252. Thereby, as indicated by an arrow F in FIG. 14(b), the swinging member 248 can swing in the vertical direction around the shaft portion 202a. Further, as shown by an arrow G in FIG. 14(b), the bracket 200 and the carriage 14a can swing in the vertical direction around the shaft portion 202a.

15 is a view showing a relationship between the connecting unit 54a and the connecting unit 222, wherein FIG. 15(a) is a plan view showing the connecting unit 54a and the connecting unit 222, and FIG. 15(b) is a HH line cross-section of FIG. 15(a). Figure.

The connection unit 54a differs from the connection unit 54 of FIG. 4 in that a collar 260 is provided instead of the collar 76, and a spherical bearing 262 is provided instead of the eyelet bushing 78. Therefore, the configuration of the connecting unit 54a other than the collar 260 and the spherical bearing 262 will be omitted.

Referring to Fig. 15, a cylindrical collar 260 is provided in the coupling unit 54a so as to be supported by the upper ends of the support members 72, 74 (see Fig. 4). The length of the collar 260 in the left-right direction is set to be, for example, shorter than the length of the collar 76 (see FIG. 4) in the left-right direction. The support members 72, 74 (see Fig. 4) and the collar 260 are joined by, for example, welding.

A spherical bearing 262 is disposed within the collar 260. The spherical bearing 262 includes an outer wheel 264 having a substantially cylindrical shape and an inner wheel 266 having a hollow substantially spherical shape. The outer wheel 264 is fixed to the collar 260. The outer ring 264 includes a curved surface 264a that is recessed toward the diametrical direction on the inner circumferential surface thereof. The outer peripheral surface of the inner ring 266 is slidably supported on the outer ring 264 by a curved surface 264a. Thereby, the inner ring 266 can swing in the up and down direction centering on the imaginary swing axis I extending through the center thereof in the front-rear direction.

The coupling unit 222 includes a bracket 268, a coupling member 270, a fixing plate 272, and a support member 274. Referring to Fig. 15(a), the bracket 268 includes a flat plate portion 268a extending in the left-right direction and arm portions 268b and 268c extending forward from both end portions of the flat plate portion 268a. Each of the arm portions 268b and 268c includes through holes 268d and 268e that penetrate in the left-right direction. A hollow disk-shaped reinforcing member 276 is fixed to the left side surface of the arm portion 268b, and a hollow disk-shaped spacer piece 278 is provided on the right side surface of the arm portion 268b. A hollow disk-shaped reinforcing member 280 is fixed to the right side surface of the arm portion 268c, and a hollow disk-shaped spacer piece 281 is provided on the left side surface of the arm portion 268c.

The connecting member 270 has the same configuration as the connecting member 216 (see FIG. 6( a )), and includes a shaft portion 270 a. The shaft portion 270a is inserted into the reinforcing member 276, the arm portion 268b (through hole 268d), the spacer 278, the inner wheel 266, the spacer 281, The arm portion 268c (through hole 268e) and the reinforcing member 280. Thereby, the inner wheel 266 of the coupling unit 54a and the bracket 268 of the coupling unit 222 are coupled. Thereby, the bracket 268 can swing in the up and down direction around the swing axis I. Further, as indicated by an arrow J in Fig. 15(b), the bracket 268 can swing in the vertical direction around the shaft portion 270a. Further, the shaft portion 270a and the shaft portion 244a (see FIG. 12) are arranged side by side on the same axis. Since the fixing plate 272 has substantially the same shape as the fixing plate 218 (see FIG. 6( a )), the description thereof will be omitted.

The support member 274 is disposed in such a manner as to connect the flat plate portion 268a of the bracket 268 and the front end surface 138a of the front frame 138. The flat plate portion 268a and the support member 274 are joined by, for example, welding. Further, the front end surface 138a of the front frame 138 and the support member 274 are joined by, for example, welding. Thereby, the carriage 14a can swing in the vertical direction around the swing axis I (see FIG. 15(a)), and can be moved up and down around the shaft portion 270a as indicated by an arrow J (see FIG. 15(b)). Swing in the direction.

In the three-wheeled bicycle 10a, the connection unit 52, the connection unit 54a, the connection unit 130, the connection unit 220, and the connection unit 222 function as a connection portion, and the shaft portion 234a and the shaft portion 238a function as a rotation axis, and the connection unit 52, The connection unit 130 and the connection unit 220 function as a third connection unit, the shaft unit 244a functions as a second shaft unit, the connection unit 52 functions as a third connection unit, and the shaft unit 202a functions as a third shaft unit. Function, the bracket 200 functions as a fourth connecting portion, and the bracket 242, the swinging member 248, the collar 250, and the eyelet bushing 252 function as a fifth connecting portion, and the connecting unit 54a and the connecting unit 222 serve as the fourth Played by the link Function, the shaft portion 270a functions as the fourth shaft portion, the spherical bearing 262 functions as a bearing portion, and the constituent elements other than the spherical surface bearing 262 in the connecting unit 54a function as the sixth connecting portion, and the bracket 268 and The support member 274 functions as a seventh connection portion.

Hereinafter, the effect of the three-wheeled bicycle 10a will be described.

In the three-wheeled bicycle 10a, since the bogie 14a has the first caster 128a and the second caster 128b, the stowage portion 224 can be stably supported even when a large amount of cargo is loaded on the stowage portion 224.

Further, when the first caster 128a rotates around the shaft portion 234a, the first caster 128a does not protrude to the left side of the load portion 224, and when the second caster 128b rotates around the shaft portion 238a, the second caster 128b does not protrude to It is more to the right than the stowage portion 224. Thereby, even when a road having a narrow road width such as an alley is passed, the first caster 128a and the second caster 128b can be prevented from coming into contact with a wall or the like. As a result, the three-wheeled bicycle 10a can be smoothly driven.

Further, when the first caster 128a rotates around the shaft portion 234a, the first caster 128a does not protrude rearward of the load portion 224, and when the second caster 128b rotates around the shaft portion 238a, the second caster 128b does not protrude to It is later than the stowage portion 224. Thereby, the first caster 128a and the second caster 128b do not become obstacles when loading and unloading goods. Thereby, operability can be improved. Further, even if a baffle or a rail or the like which is opened rearward around the lower end is provided at the end portion of the stowage portion 224 to prevent the cargo from falling, the baffle or the like can be prevented from contacting the first caster 128a. And the second caster 128b. In this case, since the shutter or the like can be fully opened, the loading and unloading of the cargo is easy.

Moreover, in the three-wheeled bicycle 10a, the trolley 14a is swingable around the swing axis I The moving method is coupled to the frame 16 of the bicycle body 12 by the connecting unit 52, the connecting unit 54a, the connecting unit 130, the connecting unit 220, and the connecting unit 222. More specifically, the bogie 14a is supported by the spherical bearing 262 via the coupling unit 222 so as to be swingable in the vertical direction around the swing axis I. Thereby, the carriage 14a can be rocked about the swing axis I with respect to the frame 16. Therefore, even when either of the first caster 128a and the second caster 128b is lifted by the convex portion of the ground or the like, it is possible to prevent a large torsional stress from being generated between the frame 16 and the carriage 14a. Thereby, the strength of the frame 16 is designed to be easier.

Further, the swinging member 248 is provided to be swingable in the vertical direction around the shaft portion 244a, and is swingable in the vertical direction around the shaft portion 202a. Thereby, the bracket 200 provided on the bogie 14a is swingable in the vertical direction around the shaft portion 244a at a position spaced apart from the shaft portion 244a. When the bogie 14a is swung around the swing axis I in such a configuration, the bracket 200 provided on the bogie 14a can swing in the vertical direction around the shaft portion 244a. Thereby, it is possible to prevent the shaft portion 244a from swinging in the vertical direction when the carriage 14a is rocked. As a result, since the rocking motion of the trolley 14a can be prevented from being transmitted to the frame 16 of the bicycle body 12, the three-wheeled bicycle 10a can be driven more comfortably.

Furthermore, the configuration of the trolley is not limited to the configuration of the above-described trolleys 14, 14a. Fig. 16 is a view showing another example of the bogie. Fig. 16(a) shows a front view of the bobbin 14b, and Fig. 16(b) shows a left side view of the bobbin 14b. Hereinafter, only a part of the bogie 14b having a configuration different from the bogie 14 will be described. The part of the trolley 14b that is not described below is configured as a trolley 14 identical composition. Further, in FIG. 16(a), the caster 128 is not shown in order to avoid complication.

Referring to Figure 16, the cart 14b includes a foot frame member 282. The leg member 282 includes a pair of leg portions 282a and 282b arranged side by side in the left and right, a cross member 282c extending in the left-right direction so as to connect the leg portions 282a and 282b, and a leg member 282a, 282b disposed side by side and arranged side by side. A pair of auxiliary casters 282d, 282e.

In this embodiment, the state in which the auxiliary casters 282d and 282e are in contact with the ground G is referred to as the grounding state of the leg member 282, and the state in which the auxiliary casters 282d and 282e are not in contact with the ground G is referred to as the ungrounded state of the leg member 282.

The auxiliary casters 282d are rotatably provided in the horizontal direction at the lower end portion of the leg portion 282a, and the auxiliary casters 282e are rotatably provided in the horizontal direction at the lower end portion of the leg portion 282b.

The upper end portion of the leg portion 282a is swingably supported by the bracket 286a via the support shaft 284a, and the upper end portion of the leg portion 282b is swingably supported by the bracket 286b via the support shaft 284b. The bracket 286a is fixed to the reinforcing frame 148 (see FIG. 16(b)), and the bracket 286b is fixed to the reinforcing frame 150 (see FIG. 6(a)). Thereby, the leg member 282 can be supported by the stowage portion 120 in the vertical direction about the support shafts 284a and 284b.

A locking mechanism 288 is provided to connect the leg portion 282a and the bracket 286a. The locking mechanism 288 has the same configuration as the locking mechanism used for, for example, a bicycle stand, and can limit the swinging motion of the foot member 282. Furthermore, the state in which the swinging motion of the leg member 282 is restricted is shown in FIG. 16, that is, the state of the leg member 282 is locked by the locking mechanism 288.

When the trolley 14b is separated from the bicycle body 12 (refer to FIG. 1), the state in which the auxiliary casters 282d and 282e contact the ground G (that is, the state in which the base member 282 is set to the ground state) is Locking mechanism 288 locks foot member 282. In this case, since the stowage portion 120 of the bogie 14b is supported by the leg member 282 and the caster 128, the delivery person can more easily stabilize the stowage portion 120 when carrying the cargo. This can reduce the burden on the delivery person.

On the other hand, referring to Fig. 17, when the trolley 14b is coupled to the bicycle body 12 (see Fig. 1), the locking of the frame member 282 by the locking mechanism 288 is released to assist the caster 282d and the auxiliary caster 282e. (Refer to Fig. 16 (a)) The base member 282 is rotated upward from the ground G. That is, the foot frame member 282 is set to a non-grounded state. Moreover, since the leg member 282 is stretched to the obliquely upper front by the coil spring 288a of the locking mechanism 288, the leg member 282 is pulled up to the upper state (the ungrounded state shown in FIG. 17). maintain. Thereby, it is possible to prevent the auxiliary casters 282d, 282e from contacting the ground G during the three-wheeled bicycle running.

Referring to Fig. 16 (b), a connecting member 290 is fixed to the upper end of the support frame 166 (connecting portion 172) of the caster 128. The connecting member 290 includes a cylindrical flange portion 292 fixed to the connecting portion 172 and a shaft portion 294 extending upward from a central portion of the upper surface of the flange portion 292. The shaft portion 294 is rotatably supported by the bearing unit 176. Thereby, the support frame 166 can be rotated in the horizontal direction centering on the shaft portion 294, and the caster 128 can be rotated in the horizontal direction centering on the shaft portion 294.

Figure 18 is a left side view showing the rear portion of the stowage portion 120 of the bogie 14b. 19 shows a rear view of the center portion of the frame 140 in the left-right direction after the carriage 14b. In addition, in FIGS. 18 and 19, in order to avoid complication of illustration, the railing part 122 (refer FIG. 16) is not shown.

Referring to Fig. 18, the flange portion 292 includes a substantially cylindrical cavity portion 292a that is open on the outer peripheral surface thereof. The cavity portion 292a is formed when the caster 128 is at the rearmost side (in the case of the state shown in FIGS. 16 to 18) and is formed to be open toward the rear and parallel to the front-rear direction. Further, in Fig. 18(b), the peripheral portion of the cavity portion 292a in the flange portion 292 is shown in cross section.

Referring to Fig. 16 to Fig. 19, a reinforcing frame 296 extending in the front-rear direction is provided so as to connect the center portion of the reinforcing frame 158 (see Figs. 16 to 18) in the left-right direction and the center portion of the rear frame 140 in the left-right direction. . Referring to Fig. 19, a pair of plate-like members 298a, 298b are provided so as to extend downward from the reinforcing frame 296. The plate member 298a is fixed to the left side surface of the reinforcing frame 296, and the plate member 298b is fixed to the right side surface of the reinforcing frame 296. The cylindrical holding member 300 is fixed to the lower end portions of the pair of plate-like members 298a and 298b so as to extend in the front-rear direction.

Referring to Fig. 18, an annular spring seat member 302 is provided at an end portion of the holding member 300. In addition, in FIG. 19, in order to avoid complication of illustration, the spring seat member 302, the following spring seat member 308 (refer FIG. 18), and the following coil spring 310 (refer FIG. 18) are not shown.

Referring to Figs. 18 and 19, a restriction member 304 having a substantially cylindrical shape is inserted into the holding member 300 and the spring seat member 302. Referring to Fig. 18, the diameter of the front end portion of the restricting member 304 is smaller than the diameter of the cavity portion 292a. The restricting member 304 is disposed at the same height as the cavity portion 292a. Referring to Figures 18 and 19, The rear end portion of the restricting member 304 is fixed to the rod-shaped operating member 306 so as to extend obliquely downward to the right.

Referring to FIG. 18, an annular spring seat member 308 is disposed on the restricting member 304 further forward than the operating member 306. The coil spring 310 is fitted to the restricting member 304 in such a manner as to be supported by the spring seat member 302 and the spring seat member 308. The coil spring 310 presses the restricting member 304 toward the rear via the spring seat member 308.

Referring to FIGS. 18 and 19 , a plate-shaped guiding member 312 is provided on the rear end of the stowage portion 120 on the right side of the restricting member 304 . The guiding member 312 includes a parallel portion 312a (refer to FIG. 19) extending substantially in parallel with respect to the rear frame 140, a hook portion 312b bent upward from the right end portion of the parallel portion 312a, and a left end portion from the parallel portion 312a. The inclined portion 312c extends obliquely downward. The parallel portion 312a is welded to, for example, the rear frame 140, and the hook portion 312b is welded to, for example, the reinforcing frame 156. Thereby, the guiding member 312 is fixed to the stowage portion 120.

Referring to FIG. 18, the inclined portion 312c includes a through hole 314. The through hole 314 extends in the left direction from the one end portion 314a to the right oblique front side and then toward the other end portion 314b. The other end portion 314b of the through hole 314 is located further forward than the one end portion 314a and curved toward the rear.

The operating member 306 is inserted into the through hole 314 of the guiding member 312. Since the operation member 306 is fixed to the restriction member 304, the restriction member 304 can be moved in the front-rear direction by moving the operation member 306 along the through hole 314.

As described above, the operating member 306 is directed rearward by the coil spring 310 Subject to pressure. Thereby, the operating member 306 is locked to the guiding member 312 at one end portion 314a or the other end portion 314b of the through hole 314. That is, the operation member 306 can be fixed to one end portion 314a or the other end portion 314b of the through hole 314 by the coil spring 310. As a result, the movement of the restricting member 304 in the front and rear directions can be restricted.

Referring to Fig. 18 (a), for example, when the cart 14b is separated from the bicycle body 12 (refer to Fig. 1), the front end portion of the restricting member 304 is inserted into the cavity portion 292a of the connecting member 290, and the operation is performed. The member 306 is fixed to the other end portion 314b of the through hole 314. Thereby, the rearward movement of the operating member 306 is restricted, and the front end portion of the restricting member 304 can be prevented from coming off from the cavity portion 292a. The swinging of the restricting member 304 in the left-right direction is restricted by the holding member 300. Thereby, the swing of the connecting member 290 in the left-right direction is restricted by the restricting member 304, and the swing of the caster 128 in the left-right direction is restricted. Therefore, even when the delivery person pushes the carriage 14b so that the traveling direction of the caster 128 side (the rear frame 140 side) becomes forward, the caster 128 side (the rear frame 140 side) of the carriage 14b can be prevented from swinging side by side. . As a result, the traveling direction of the bogie 14b is stabilized, so that the conveyance of the goods is easy.

On the other hand, referring to FIG. 18(b), when the bogie 14b is coupled to the bicycle body 12 (see FIG. 1), the front end portion of the restricting member 304 is withdrawn from the cavity portion 292a, and the operating member 306 is fixed. At one end 314a of the through hole 314. Thereby, the connecting member 290 can swing in the left-right direction, and the caster 128 can swing in the left-right direction. Thereby, the trolley 14b can achieve the same operational effects as the above-described trolley 14.

In the bogie 14b, the flange portion 292, the holding member 300, the regulating member 304, the operating member 306, and the guiding member 312 function as a first restricting mechanism, and the locking mechanism 288 functions as a second restricting mechanism.

As described above, in the carriage 14b, since the stowage portion 120 is supported not only by the casters 128 but also by the pair of auxiliary casters 282d and 282e, the delivery person can more easily stabilize the stowage portion 120 when transporting the cargo. Moreover, since the caster 128 can be restricted from swinging in the left-right direction by the restricting member 304, the delivery person can more easily stabilize the traveling direction of the trolley 14b. These results can substantially alleviate the burden on the delivery person.

Further, a foot frame member 282 may be provided in the trolley 14a (see FIG. 13) instead of the foot frame member 126. Further, in the bogie 14a, a constituent element similar to the restricting member 304 (see FIG. 18) or the like may be provided, and the first caster 128a and the second caster 128b may be restricted from swinging in the left-right direction.

Further, in the bogie 14 (see FIG. 6) and the bogie 14a (see FIG. 13), the lock mechanism 288 (see FIG. 16) may be provided on the leg member 126.

Fig. 20 is a left side view showing another example of the bogie, and Fig. 21 is a front view showing the bogie 14c of Fig. 20. 20 and 21, the bogie 14c in a state in which the front end portion of the stowage portion 120 is supported by the following leg member 322 is shown. In addition, in order to clarify the positional relationship between the bicycle body 12 (see FIG. 1) and the trolley 14c, the bicycle body 12 (refer to FIG. 1), the rear wheel support unit 30, the left rear wheel 108, and the second chain link are shown in FIG. The right rear wheel 114, the rear wheel support unit 30 is indicated by a two-dot chain line in Fig. 21(b). Moreover, in order to easily understand the structure of the bogie 14c, the configuration of a part of the bogie 14c is omitted in FIG. 21(b) (one part of the rotating member 322, the shaft member 320, and the fixing member described below) 334 and restriction member 346).

Referring to Figures 20 and 21, the carriage 14c differs from the carriage 14 of Figure 6 in that it includes a locking mechanism 316 disposed at a front end of the side frame 134, including a front end provided to the side frame 136 (see Figure 21). The bracket 318 (see FIG. 21) includes a shaft member 320 (refer to FIG. 20 and FIG. 21(a)) that connects the locking mechanism 316 and the bracket 318, and has a foot member 322 instead of the foot member 126. Further, the present invention includes a locking mechanism 324 (see FIGS. 20 and 21 (a)) provided between the leg member 322 and the caster 128, and a connecting portion 326, 327 (see FIG. 21) instead of the connecting unit 130. 132 (refer to Fig. 6 (a)). Therefore, the configuration of the bogie 14c other than the above-described configurations will be omitted.

In this embodiment, the state in which the following auxiliary casters 330a, 330b of the leg member 322 are in contact with the ground is referred to as the grounding state of the leg member 322, and the state in which the auxiliary casters 330a, 330b are not in contact with the ground is referred to as the leg member 322. Non-grounded state.

Referring to Fig. 20 and Fig. 21, a locking mechanism 316 is provided so as to protrude downward from the front end portion of the side frame 134, and a bracket 318 is provided so as to protrude downward from the front end portion of the side frame 136 (refer to Fig. 21). Refer to Figure 21). A cylindrical shaft member 320 extending in the left-right direction is provided below the stowage portion 120 so as to connect the lock mechanism 316 and the bracket 318. One end of the shaft member 320 (the left end portion in this embodiment) is supported by a bracket 336 of the lock mechanism 316, and the other end portion (the right end portion in this embodiment) of the shaft member 320 is supported by the bracket Rack 318. Referring to Fig. 20, the position of the upper and lower directions of the shaft member 320 is the upper and lower positions of the support tube 34b of the rear wheel support unit 30. The settings are roughly the same. A leg member 322 is provided below the stowage portion 120 so as to support the front end portion of the stowage portion 120.

Fig. 22 is an enlarged view showing the left end portion of the lock mechanism 316 and the leg member 322, (a) is a front view, and (b) is a left side view. 21 and 22, the leg member 322 includes a pair of leg portions 328a and 328b of approximately angular columnar arrangement side by side arranged side by side, and one side of the lower end portion of the support leg portions 328a and 328b and the pair of auxiliary casters 330a. 330b, the cylindrical rotating member 332 extending in the left-right direction and connected to the upper end portions of the leg portions 328a, 328b, and the central portion of the self-rotating member 332 in the left-right direction are rearward (in side view relative to the feet 328a, 328b) The triangular shape fixing member 334 is protruded from the side in which the direction is substantially perpendicular (see FIGS. 21( a ) and 22 ( b )).

The auxiliary caster 330a is rotatably attached to the lower end portion of the leg portion 328a in the horizontal direction, and the auxiliary caster 330b is rotatably attached to the lower end portion of the leg portion 328b in the horizontal direction. The shaft member 320 is inserted into the rotating member 332 in such a manner that the rotating member 332 is rotatable relative to the shaft member 320. The leg portions 328a, 328b and the fixing member 334 are fixed to the rotating member 332 by, for example, welding. Thereby, the leg portions 328a and 328b, the auxiliary casters 330a and 330b, and the fixing member 334 can integrally rotate with the rotation member 332 around the shaft member 320. In other words, the leg member 322 is supported by the stowage portion 120 in the vertical direction via the shaft member 320 and the brackets 318 and 336.

Referring to Fig. 21, the connecting portion 326 is provided such that one end portion (left end portion in the embodiment) of the self-rotating member 332 extends upward (in a direction opposite to the leg portion 328a in the diameter direction of the rotating member 332), and is connected. The portion 327 is along the other end of the self-rotating member 332 (the right end portion in this embodiment) The square (in the direction in which the diameter direction of the rotating member 332 is opposite to the leg portion 328b) is extended. Referring to Fig. 22, the joint portion 326 has a hook portion 326a at its upper end portion. As shown in FIG. 25 below, the hook portion 326a has a shape that can be locked to the support tube 34b of the rear wheel support unit 30. Similarly, referring to Fig. 21, the joint portion 327 has a hook portion 327a at its upper end portion. The hook portion 327a has the same shape as the hook portion 326a. The connecting portions 326 and 327 are fixed to the rotating member 332 by, for example, welding. Therefore, the connecting portions 326 and 327 can integrally rotate with the rotating member 332 (the leg member 322) around the shaft member 320.

Fig. 23 is a view showing constituent elements of the lock mechanism 316. 22 and 23, the locking mechanism 316 includes a bracket 336, a locking member 338, and an operating member 340.

Referring to Fig. 22 and Fig. 23(a), the bracket 336 includes a plate-like portion 336a, a substantially L-shaped locking portion 336b provided on the left side surface of the plate-like portion 336a, and a right side surface provided on the plate-shaped portion 336a. The rectangular parallelepiped locking portion 336c.

Referring to Fig. 23(a), a hole 336d penetrating in the left-right direction is formed in a substantially central portion of the plate-like portion 336a. One end of the shaft member 320 (see FIG. 22) (the left end portion in this embodiment) is supported by the plate portion 336a in the hole 336d. Further, a hole similar to the hole 336d is formed in the bracket 318 (see FIG. 21), and the other end portion (the right end portion in this embodiment) of the shaft member 320 is supported by the bracket in the hole. 318. The shaft member 320 (see FIG. 22) may be fixed to the bracket 318 and the bracket 336 (plate portion 336a) by a fastening tool (such as a bolt) (not shown), or may be welded to the bracket 318, 336.

Referring to Fig. 22 and Fig. 23(a), the front edge of the plate portion 336a is formed with a rearward direction. The concave portion 336e of the square depression. The position in the upper and lower directions of the recessed portion 336e is substantially the same as the position in the up-down direction of the through hole 336d (see FIG. 23(a)). Further, referring to Fig. 21 (a), a recess 318a similar to the recess 336e is formed in the bracket 318. Referring to Fig. 23, in the plate-like portion 336a, a hole 336f which is curved in an arc shape and penetrates in the left-right direction is formed obliquely rearward and downward of the hole 336d.

Referring to Fig. 22, the approximately L-shaped locking portion 336b is bent upward from the rear end portion of the plate-like portion 336a to the left side of the operation member 340. The position in the upper and lower directions of the locking portion 336b is substantially the same as the position in the upper and lower directions of the hole 336d (see FIG. 23(a)). The locking portion 336c is provided obliquely downward before the hole 336d (see FIG. 23(a)) so as to protrude from the plate-like portion 336a in the right direction. Referring to Fig. 22 (a), the locking portion 336c is located on a rotation rail (not shown) of the leg portion 328a centering on the shaft member 320. Therefore, the forward swing of the leg portion 328a is restricted by the locking portion 336c.

Referring to Fig. 21, the bracket 318 has the same locking portion 318b as the locking portion 336c. The locking portion 318b is located on a rotation rail (not shown) of the leg portion 328b centering on the shaft member 320. Therefore, the forward swing of the leg portion 328b is restricted by the locking portion 318b. In this manner, in the carriage 14c, the leg portions 328a and 328b are locked by the locking portion 336c of the bracket 336 and the locking portion 318b of the bracket 318, whereby the forward swing of the leg member 322 can be restricted. . Further, the bracket 318 has a bracket and a hole, and is not provided with a locking portion and a hole corresponding to the locking portion 336b (see FIG. 23(a)) and the hole 336f (see FIG. 23(a)). 336 (refer to FIG. 23(a)) is configured to be bilaterally symmetrical.

Referring to FIGS. 22 and 23(b), the locking member 338 includes an elongated deformation member 338a and a side arc-shaped locking member 338b. The deforming member 338a is for example Made of elastically deformable material. As the deforming member 338a, for example, a leaf spring can be used. The upper end portion of the deforming member 338a is fixed to the plate portion 336a by a fastening tool 342 such as a pin or a screw (see FIG. 22(b)). Thereby, the deforming member 338a is attached to the left side surface of the plate-like portion 336a. Further, in order to avoid complication of the illustration, the fastening tool 342, the fastening tool 338c described below, and the support member 344 are not shown in FIG. 22(a).

Referring to FIGS. 22(b) and 23(b), the locking member 338b is fixed to the right side surface of the deforming member 338a by a fastening tool 338c such as a pin or a screw. Referring to Fig. 22 (b) and Figs. 23 (a) and (b), the outer shape of the locking member 338b in the side view is substantially the same as the outer shape of the hole 336f and is slightly smaller. Referring to Fig. 22 (b), the locking member 338b is fitted into the hole 336f.

Referring to Fig. 22 (a), the thickness of the locking member 338b in the left-right direction is larger than the thickness of the plate-like portion 336a. Thereby, the right end portion of the locking member 338b protrudes to the right side of the right side surface of the plate-like portion 336a, and is located on a rotation rail (not shown) of the leg portion 328a centering on the shaft member 320. Referring to Fig. 22 (b), when the leg portion 328a is parallel to the vertical direction, the locking member 338b is located behind the leg portion 328a. Therefore, the rearward swing of the leg portion 328a is restricted by the locking member 338b. Thereby, the rearward swing of the foot frame member 322 is restricted. Further, as described above, the forward swing of the leg member 322 is restricted by the locking portion 336c and the locking portion 318b (see FIG. 21). Therefore, in the carriage 14c, the leg portions 328a are locked by the locking portions 336c and 338b, and the leg portions 328b (see FIG. 21) are locked by the locking portions 318b (see FIG. 21), whereby the restriction can be restricted. The swing of the foot frame member 322. That is, the foot member 322 can be locked by the locking mechanism 316.

Referring to Fig. 22 and Fig. 23(c), the operation member 340 includes an elongated main body portion 340a and a protruding portion 340b projecting from the main body portion 340a in the width direction of the main body portion 340a. A concave portion 340c is formed on a right side surface of a substantially central portion of the main body portion 340a in the longitudinal direction. Referring to Fig. 22, an operating member 340 is disposed on the left side surface of the bracket 336 by the deforming member 338a of the locking member 338 through the recess 340c. Referring to Fig. 22 (b), the lower end portion of the body portion 340a of the operating member 340 is rotatably supported by the bracket 336 via a support member 344 such as a pin. The protruding portion 340b of the operating member 340 is overlapped with the locking member 338b when the upper end portion of the main body portion 340a is locked to the locking portion 336b. In this case, since the movement of the locking portion 338b in the leftward direction is restricted by the protruding portion 340b, the state in which the right end portion of the locking member 338b protrudes from the plate portion 336a to the right side is maintained. Thereby, the state in which the swing of the leg portion 328a is restricted by the locking portion 338b is maintained. That is, the state in which the leg member 322 is locked by the locking mechanism 316 is maintained. The detailed functions of the locking mechanism 316 are described below.

Referring to Fig. 20, the lock mechanism 324 includes a rod-shaped restricting member 346, a plate-shaped holding member 348, and a plate-shaped locking member 350. Referring to FIGS. 21(a) and 22(b), one end portion (the front end portion in this embodiment) of the restricting member 346 is swingably supported by the support member 344 of the leg member 322. Referring to Fig. 20 and Fig. 21 (a), the holding member 348 is provided to extend downward from the stowage portion 120. More specifically, the upper end portion of the holding member 348 is fixed to the reinforcing frame 152 (see FIG. 6(a)) by, for example, welding. The holding member 348 includes a circular hole 348a penetrating in the front-rear direction. The other end portion (the rear end portion in this embodiment) of the restricting member 346 is inserted into the hole 348a. By this limit The rear end of the member 346 is slidably supported by the holding member 348.

Referring to Fig. 20 and Fig. 21 (b), the locking member 350 is provided to extend upward from the front end portion of the wheel support portion 170 of the caster 128. The locking member 350 is fixed to the wheel support portion 170 by, for example, welding. Referring to Fig. 21 (b), the locking member 350 has a concave portion 350a which is recessed downward at the upper end portion thereof and which is inserted into the other end portion (in the embodiment, the rear end portion) of the restricting member 346 (see Fig. 20). .

In the carriage 14c, the lock mechanism 324 functions as a first restriction mechanism, and the lock mechanism 316 functions as a second restriction mechanism.

In the bogie 14c having the above configuration, the bogie 14c and the bicycle body 12 can be coupled by hooking the hook portions 326a and 327b of the coupling portions 326 and 327 to the support tube 34b of the rear wheel support unit 30 (refer to figure 1). Therefore, in the three-wheeled bicycle including the trolley 14c, it is not necessary to provide the coupling units 52 and 54 (refer to FIG. 2). Therefore, for example, the pair of rear lower forks 26 (refer to FIG. 2) may be directly connected to the rear wheel support unit 30 by welding, or may be the same member as the grip members 56, 58 (refer to FIG. 5). A pair of rear lower forks 26 are connected to the rear wheel support unit 30. Hereinafter, a method of connecting and a separation method of the bogie 14c and the bicycle body 12 (see FIG. 1) will be described in detail using the drawings.

24 and 25 are side views showing the state of the lock mechanism 316 and the leg member 322 when the carriage 14c is coupled to the bicycle body 12 (FIG. 1). In Fig. 24, (a) is a view showing a state in which the locking of the leg member 322 by the lock mechanism 316 is released, and (b) is a view showing a state in which the locking of the leg member 322 is released. Fig. 25 is a view showing a state of the lock mechanism 316 and the leg member 322 when the carriage 14c is coupled to the bicycle body 12. Figure 26 is a diagram of Figure 24 (a) In the K-K line sectional view, (a) is a view showing a state of the lock mechanism 316 when the deforming member 338a is not deformed, and (b) is a view showing a state of the lock mechanism 316 when the deforming member 338a is deformed.

Referring to Fig. 20, when the bicycle 14c is coupled to the bicycle body 12 (Fig. 1), first, in a state where the base member 322 is set to the ground state, the support tube 34b of the rear wheel support unit 30 is fitted into the recess 336e of the bracket 336. The carriage 14c is disposed behind the bicycle body 12 so as to be recessed 318a (see FIG. 21(a)) of the bracket 318 (see FIG. 21).

22(b) and 24(a), the operating member 340 is rotated forward as indicated by an arrow L (see FIG. 22(b)). Specifically, as shown in FIG. 24( a ), the operation member 340 is rotated by moving the protruding portion 340 b in a side view so as not to overlap the position of the locking member 338 b . At this time, as shown in Fig. 26 (a), since the locking member 338b of the locking member 338 is located on the rotating track of the leg portion 328a, the rearward rotation of the leg portion 328a is restricted by the locking member 338b. . That is, the state in which the leg member 322 (refer to FIG. 24) is locked by the lock mechanism 316 is maintained.

Then, referring to Fig. 26 (b), the locking member 338b is moved in the left direction by stretching the lower end portion of the deforming member 338a of the locking member 338 in the left direction. Specifically, the deforming member 338a is stretched in the left direction so that the locking member 338b moves to a position away from the rotational trajectory of the leg portion 328a. Thereby, the leg portion 328a can be rotated rearward. That is, the locking by the foot member 322 of the locking mechanism 316 is released.

Next, referring to Fig. 24 (b) and Fig. 25, the leg member 322 is rotated to the rear as indicated by an arrow M (see Fig. 24 (b)). Specifically, referring to FIG. 25, The leg member 322 is rotated until the hook portion 326a of the coupling portion 326 and the hook portion 327a (see FIG. 21) of the coupling portion 327 (see FIG. 21) are hung at the position of the support tube 34b. Thereby, the rear wheel support unit 30 (refer FIG. 20) and the trolley 14c are connected via the connection parts 326 and 327. That is, the bicycle body 12 (see FIG. 1) is coupled to the cart 14c. Also, the foot frame member 322 is set to a non-grounded state. Further, in this embodiment, the hook portions 326a and 327a of the coupling portions 326 and 327 have a shape that can slide in the circumferential direction with respect to the outer circumferential surface of the support tube 34b. Therefore, the carriage 14c is coupled to the rear wheel support unit 30 so as to be swingable in the vertical direction with respect to the rear wheel support unit 30, similarly to the above-described carriage 14 (see FIG. 1). Moreover, in this embodiment, each of the hook portions 326a and 327a is connected to the support tube 34b so as to sandwich the support tube 34b from the front and the rear. Thereby, the connection portions 326 and 327 can be prevented from swinging in the left-right direction around the connection portion (the hook portions 326a and 327a) of the support tube 34b. Therefore, the carriage 14c is coupled to the rear wheel support unit 30 so as not to be swingable in the left-right direction with respect to the rear wheel support unit 30, similarly to the above-described carriage 14 (see FIG. 1).

Referring to Fig. 25, in a state in which the rear wheel support unit 30 and the carriage 14c are coupled (the connection portions 326 and 327 are hung in the support tube 34b), the leg portion 328a is located above the locking member 338b. In this state, as shown in Fig. 26 (a), the deforming member 338a of the lock member 338 is returned to the original state. Thereby, the locking member 338b is again positioned on the rotating track of the leg portion 328a, and the downward rotation of the leg portion 328a is restricted by the locking member 338b. That is, the foot frame member 322 is locked by the locking mechanism 316. Thereby, the auxiliary casters 330a, 330b can be kept away from the ground (ie, not grounded). Foot frame member 322.

Finally, referring to Figs. 25 and 27, as shown by an arrow N (see Fig. 25), the operation member 340 is rotated to the rear, and the upper end portion of the operation member 340 is locked to the locking portion 336b. Thereby, as shown in FIG. 27, the protruding portion 340b moves to the left side of the locking member 338b, and restricts the locking member 338b from moving to the left. That is, the lock of the lock mechanism 316 can be prevented from being released. Further, when the carriage 14c is separated from the bicycle body 12 (see FIG. 1), the movement of the base member 322 from the state shown in FIG. 27 to the state shown in FIG. 20 can be performed by performing the operation opposite to the above. .

Here, as described above, in the carriage 14c, the front end portion of the restricting member 346 is swingably supported by the fixing member 334. Therefore, as shown in FIGS. 24 and 25, when the leg member 322 is rotated, the front end portion of the restricting member 346 moves along with the fixing member 334 as a circular orbit around the shaft member 320. Thereby, the restricting member 346 moves in the front-rear direction.

In this embodiment, as shown in FIGS. 20 and 27, the lock mechanism 324 is configured such that when the leg portions 328a and 328b are parallel to the vertical direction (see FIG. 20), the rear end of the restricting member 346 can be provided. The portion is inserted into the recess 350a of the locking member 350 (see FIG. 21(b)), and when the leg portions 328a, 328b are parallel with respect to the front-rear direction (refer to FIG. 27), the rear end of the restricting member 346 is located at the holding member 348. Between the locking member 350 and the locking member 350.

Therefore, for example, when the cart 14c is separated from the bicycle body 12 (refer to FIG. 1), as shown in FIG. 20, the rear end portion of the restricting member 346 can be inserted into the recess 350a of the locking member 350 (refer to the figure). 21(b)) and the front end of the stowage portion 120 can be supported by the leg member 322. In this case, by Since the swinging of the locking member 350 in the left-right direction can be restricted by the restricting member 346, the swing of the caster 128 in the left-right direction is restricted. Thereby, even if, for example, the delivery person pushes the carriage 14c so that the traveling direction of the caster 128 side becomes forward, the side of the caster 128 of the carriage 14c can be prevented from swinging side to side. As a result, the traveling direction of the cart 14c is stabilized, so that the conveyance of the goods is easy.

On the other hand, when the bogie 14c is connected to the bicycle body 12 (see FIG. 1), as shown in FIG. 27, the rear end portion of the restricting member 346 is self-retained from the recess 350a of the locking member 350 (refer to FIG. 21 (b). )) was taken out. Thereby, the locking member 350 can swing in the left-right direction, so that the caster 128 can swing in the left-right direction. Thereby, the trolley 14c can achieve the same operational effects as the above-described trolley 14.

As described above, in the carriage 14c, the separation of the bicycle body 12 (see Fig. 1) from the carriage 14c and the fixing of the casters 128 can be simultaneously performed by rotating the base member 322. Further, the connection between the bicycle body 12 and the bogie 14c and the fixing of the casters 128 can be simultaneously performed by rotating the base member 322. These results can fully improve the efficiency of the delivery staff.

Furthermore, the same frame member as the foot frame member 322 may be provided on the above-mentioned trolley 14a instead of the foot frame member 126. In this case, a lock mechanism similar to the lock mechanism 324 is provided between the leg member and the first caster 128a and between the leg member and the second caster 128b.

Further, in the above embodiment, the case where the carriages 14, 14a, 14b, and 14c are coupled to the bicycle body 12 including the front wheels 86, the left rear wheels 108, and the right rear wheels 114 has been described, but the trolleys may be used. 14, 14a, 14b and 14c are connected to a bicycle body having wheels of four or more wheels.

Further, in the above-described embodiment, the case where the rotation of the crank 96 is assisted by the drive unit 94 has been described. However, the vehicle may be driven by the manpower input to the crank 96 without the drive unit 94.

Further, in the above embodiment, the case where the rear wheel support unit 30 is fixed to the rear lower fork 26 has been described, but the rear wheel support unit may be configured to be rockable with respect to the rear lower fork.

Further, in the above embodiment, the front end of the stowage portion 120 is located further forward than the rear end of the left rear wheel 108 and the right rear wheel 114 and further rearward than the front end, but the front end of the stowage portion may be located at the left rear wheel 108 and the rear right side. The wheel 114 is further ahead.

Figure 28 is a side elevational view of a three-wheeled bicycle 10b including a front end 374a that is swayable relative to the rear lower fork 352 and the front end 374a of the cart 14d is located forward of the front end of the left rear wheel 108 and the right rear wheel 114. .

Referring to Fig. 28, the three-wheeled bicycle 10b includes a bicycle body 12a and a cargo transporting carriage 14d (hereinafter abbreviated as a trolley 14d).

Figure 29 is a plan view showing the rear portion of the bicycle body 12a. Referring to Figs. 28 and 29, the bicycle main body 12a is different from the bicycle main body 12 in that one rear lower fork 352 is provided instead of the pair of rear lower forks 26 (see Figs. 1 and 2), and one is provided. The rear upper fork 354 replaces the pair of rear upper forks 28 (refer to FIG. 1), the rear wheel support unit 30a is provided instead of the rear wheel support unit 30 (refer to FIG. 1), and the chain 104 and the left rear wheel 108 are transmitted. The aspect in which the mechanism T (see Fig. 29) is connected. Since the configuration of the bicycle body 12a other than the above is the same as that of the above-described bicycle body 12, description thereof will be omitted. Furthermore, since the lower fork 352 and the rear upper fork 354 can be used Since the lower fork and the rear upper fork are used after the various three-wheeled bicycles are used, the detailed description of the rear lower fork 352 and the rear upper fork 354 is omitted.

Referring to Fig. 29, the transmission mechanism T includes a rotating shaft 356 and a chain 358. The chain 104 is coupled to the right end of the rotating shaft 356. The chain 358 connects the left end portion of the rotating shaft 356 and the left rear wheel 108. By rotating for this configuration, the rotation is transmitted from the chain 104 to the left rear wheel 108 via the transmission mechanism T. Further, since the transmission mechanism used in various known three-wheel bicycles can be used as the transmission mechanism T, the detailed description of the transmission mechanism T will be omitted.

The rear wheel support unit 30a includes brackets 360, 362 for rotatably supporting the left rear wheel 108 via the axle 110, brackets 364, 366 for rotatably supporting the right rear wheel 114 via the axle 116, and a link The bracket 360 and the support tube 368 of the bracket 364 and the pair of connection units 370 and 372 mounted on the support tube 368. The rear wheel support unit 30a is coupled to the lower fork 352 so as to be rockable around the lower fork 352. Further, since the rear wheel support unit 30a is configured as the rear wheel support unit 30a other than the brackets 360, 362, 364, and 366, the support tube 368, and the connection units 370 and 372, the configuration of the known swing type rear wheel support unit can be utilized, and therefore, the description is omitted. A detailed description of the wheel support unit 30a.

The connecting unit 370 includes a bracket 370a that is approximately U-shaped in plan view and a cylindrical collar 370b that extends in the left-right direction. Both end portions of the bracket 370a extend obliquely rearward so as to expand in the left-right direction. The collar 370b is supported by the bracket 370a via a bolt 370c and a nut 370d.

The connecting unit 372 has a configuration that is bilaterally symmetrical with the connecting unit 370, and includes a bracket 372a and a collar 372b that are identical to the bracket 370a and the collar 370b. axis The ring 372b is supported by the bracket 372a via a bolt 372c and a nut 372d.

30 and 31 are side views of the bogie 14d, Fig. 32 is a front view of the bobbin 14d, and Fig. 33 is a plan view showing the bogie 14d. 30 is a view showing the bogie 14d when the leg member 382 is set to the ground state, and FIGS. 31 and 32 are diagrams showing the bogie 14d when the leg member 382 is set to the ungrounded state. . In this embodiment, the grounding state of the leg member 382 refers to the state in which the following auxiliary wheels 428, 430 of the leg member 382 are in contact with the ground. The ungrounded state of the leg member 382 means that the auxiliary wheels 428, 430 are not in contact with the ground. State. In addition, in FIGS. 32 and 33, in order to avoid complication of illustration, the illustration of the following operation lever 420 is abbreviate|omitted. In addition, in FIG. 33, in order to avoid complication of illustration, the illustration of the following lock mechanism 380 and the base member 382 is abbreviate|omitted.

Referring to Figs. 30 to 32, the carriage 14d includes a stowage portion 374, a railing portion 376 which is provided to extend upward from the stowage portion 374, a pair of casters 378 which are provided in the rear portion of the stowage portion 374, and a load portion 374. The locking mechanism 380 at the center portion is substantially connected to the base member 382 of the stowage portion 374 via the locking mechanism 380.

Referring to FIGS. 30 and 32, the stowage portion 374 includes a pair of side frames 384 which are arranged side by side in the left-right direction and extend in the front-rear direction, and cross members 386, 388, and 390 which extend in the left-right direction so as to connect the pair of side frames 384, 392.

Referring to FIGS. 30, 32, and 33, between the cross member 386 and the cross member 388 (see FIGS. 30 and 33), each of the side frames 384 is provided to extend in the front-rear direction and protrudes below the load-bearing portion 374. Bracket 394. Each of the brackets 394 is welded to, for example, the side of the inner side of the side frame 384.

Referring to Figs. 30 and 33, a bracket 395 is provided to extend obliquely rearward and downward from a central portion of the cross member 388. Bracket 395 is welded to, for example, cross member 388. The bracket 395 supports the wire 470 described below.

Referring to Fig. 33, a pair of plate-like members 396 are provided to connect both end portions of the cross member 390 and both end portions of the cross member 392 (see Fig. 30). Each of the plate members 396 is welded to, for example, the side frame 384 and the cross members 390 and 392. A bearing unit 398 is attached to each of the plate members 396. Since various known bearing units can be used as the bearing unit 398, the detailed description of the bearing unit 398 is omitted. The bearing unit 398 is configured, for example, in the same manner as the bearing unit 176 (see FIG. 6).

Referring to FIG. 30, each caster 378 includes a wheel 400 and a support frame 402 that rotatably supports the wheel 400. The support frame portion 402 has a shaft portion 402a extending in the vertical direction at an upper end portion thereof. The shaft portion 402a is rotatably supported by the bearing unit 398 (refer to Fig. 33). Thereby, the caster 378 is rotatable about the shaft portion 402a with respect to the stowage portion 374.

Referring to FIGS. 30, 32, and 33, the railing portion 376 includes a pair of first handle frames 404 that are coupled to the front ends of the pair of side frames 384 (see FIGS. 30 and 32) and extend upward; the cross members 406 and 408 (see FIGS. 30 and 32), which are coupled to a pair of first handle frames 404 and a front view reverse U-shaped second handle frame 410 connected to the pair of side frames 384 (see FIGS. 30 and 32). a rear end portion and extending upward; a cross member 412 which is disposed to extend in the left-right direction from the upper portion of the second handle frame 410; and a pair of vertical frames 414 (refer to FIG. 32) which are coupled to the cross member 412 and Cross member 392 (see Fig. 30). Referring to Figures 30 and 33, the railing portion 376 further includes: a pair of side frames a frame 416 that connects the pair of first handle frame 404 and the second handle frame 410; and a plurality of (four in the embodiment, only two in FIG. 30) vertical frame 418 (see FIG. 30) It connects the pair of side frames 416 and the pair of side frames 384 (refer FIG. 30). Referring to Fig. 30, an operation lever 420 is provided at an upper end portion of the second handle frame 410.

Figure 34 is a perspective view showing the foot frame member 382.

Referring to Fig. 34, the leg member 382 includes a pair of leg portions 422, 424 arranged side by side in the left and right, a cross member 426 extending in the left-right direction in a manner of joining the leg portions 422, 424, and being rotatably supported side by side along the left and right sides. The pair of leg portions 422 and 424 are paired with the auxiliary wheels 428 and 430 and the handle portion 432 which is connected to the leg portion 422 and extends in an arm-like direction substantially parallel to the leg portions 422 and 424. Furthermore, the diameter of the auxiliary wheels 428, 430 is smaller than the diameter of the wheel 400 of the caster 378.

The leg portion 422 includes a square tubular body portion 422a, a substantially U-shaped bracket portion 422b connected to an upper end portion of the body portion 422a, a hook portion 422c protruding from the body portion 422a to the front, and a body portion 422 connected thereto. The wheel support portion 422d of the lower end portion is substantially inverted U-shaped. The hook portion 422c includes a plate-like portion 434 having an approximately L shape and a hollow cylindrical support portion 436 penetrating the plate portion 434 in the left-right direction. A locking portion 434a formed in a notch shape is provided at an upper end portion of the plate portion 434, and a locking portion 434b extending forward is provided at a lower end portion of the hook portion 422c. The leg portion 424 has the same configuration as the leg portion 422, and includes a body portion 424a, a bracket portion 424b, a hook portion 424c, and a wheel support portion 424d.

A brake slip for braking the auxiliary wheel 428 is provided on the wheel support portion 422d. At 438, a brake unit 440 for braking the auxiliary wheel 430 is provided to the wheel support portion 424d. The brake units 438 and 440 are coupled to the operating lever 420 via wires 442 and 444 (see FIG. 30). The brake units 438, 440 are actuated by operating the operating lever 420 to brake the auxiliary wheels 428, 430.

An operation lever 446 is provided at an upper end portion of the handle portion 432. The operation lever 446 will be described below.

Referring to FIGS. 30 and 32, the lock mechanism 380 includes a first unit 448, a pair of second units 450 and 452 (see FIG. 32), and a pair of pressing members 454 and 456 (see FIG. 32). The first unit 448 is provided to connect the pair of brackets 394. Referring to Fig. 30, the second unit 450 is fixed to one of the brackets 394 (left side in this embodiment) by a fastening member (such as a bolt and a nut) (not shown), and the second unit 452 is attached. It is fixed to the other bracket (the right side in this embodiment) by a fastening member (for example, a bolt and a nut) (not shown). The second unit 450 and the second unit 452 have a bilaterally symmetrical configuration. The pressing member 454 is provided to connect the first unit 448 and the second unit 450, and the pressing member 456 is provided to connect the first unit 448 and the second unit 452. In this embodiment, a coil spring is used as the pressing members 454 and 456. Hereinafter, the first unit 448 and the second unit 450 will be described in detail. Further, as described above, since the second unit 452 has a configuration that is bilaterally symmetrical with the second unit 450, the detailed description of the second unit 452 will be omitted.

35 is a left side view showing the first unit 448 and the second unit 450, and FIG. 36 is a right side sectional view showing the first unit 448 and the second unit 450. 36 is a cross-sectional view taken along line Y-Y of FIG.

Referring to FIGS. 32, 35, and 36, the first unit 448 includes a cylindrical shaft member 458 extending in the left-right direction, a locking member 460 fixed to a central portion of the shaft member 458, and both ends fixed to the shaft member 458. One of the portions is fixed to the plate-shaped locking members 462 and 464 (see FIG. 32) and the inner side of the pair of locking members 462 and 464 (on the side of the locking member 460) to the locking member 466, 468 (refer to Figure 32).

One end of the pressing member 454 is locked to the locking member 466, and one end of the pressing member 456 is locked to the locking member 468. The other end portion of the pressing member 454 is locked to the locking portion 484 described below, and the other end portion of the pressing member 456 is locked to the locking portion 486 described below (see FIG. 32). Thereby, the locking members 466 and 468 are pressed toward the upper front side by the pressing members 454 and 456.

Referring to Figs. 35 and 36, one end portion of the wire 470 is locked to the locking member 460. The other end of the wire 470 is connected to the operating lever 446 (see Fig. 34). Thereby, the first unit 448 of the lock mechanism 380 and the operation lever 446 are coupled via the wire 470.

32, 35 and 36. The upper end portion of the locking member 462 is rotatably supported by one of the (left side in this embodiment) rear end portions of the bracket 394 via the support member 472. Referring to Fig. 32, similarly, the upper end portion of the locking member 464 is rotatably supported by the other end (in the embodiment, the right side) of the rear end portion of the bracket 394 via the support member 474. In this embodiment, the support members 472, 474 include a cylindrical collar, a bolt inserted through the collar, and a nut for fixing the bolt.

Referring to Fig. 35 and Fig. 36, in this embodiment, the locking member 460 is stretched to the rear by operating the operating lever 446 (see Fig. 34). With this, the first single The element 448 is rotated toward the rear centering on the support members 472, 474. As described above, the locking members 466 and 468 of the first unit 448 are pressed toward the upper front side by the pressing members 454 and 456. Therefore, when the operation of the operation lever 446 is released, the first unit 448 is rotated forward with the support members 472 and 474 as the center. In other words, in the first embodiment, the first unit 448 swings in the front-rear direction around the support members 472 and 474 in accordance with the operation of the operation lever 446.

Referring to FIGS. 35 and 36, the locking member 462 includes a hole portion 476 that extends downward from a substantially central portion of the locking member 462 (toward a direction opposite to the support member 472). One end portion 476a (end portion on the side of the support member 472) and the other end portion 476b of the hole portion 476 are curved toward the rear. The cylindrical sliding member 478 is slidably inserted into the hole portion 476. The sliding member 478 is supported by the bracket portion 422b of the leg member 382 via the support member 480 (refer to FIG. 34). Thereby, the foot frame member 382 and the locking member 462 are coupled. In this embodiment, the support member 480 includes a bolt that is inserted into the sliding member 478 and a nut that fixes the bolt to the bracket portion 422b. Further, in order to avoid complication of the illustration, the illustration of the sliding member 478 and the supporting member 480 is omitted in FIG.

Although the detailed description is omitted, the lock member 464 (see FIG. 32) has a configuration that is bilaterally symmetrical with the lock member 462, and includes a hole portion (not shown) that is the same as the hole portion 476 (see FIG. 35). Referring to Fig. 34, bracket portion 424b of leg member 382 is coupled to locking member 464 via a sliding member (not shown) and a supporting member (not shown) similar to sliding member 478 and supporting member 480 described above (see Figure 32). Thereby, the foot frame member 382 and the locking member 464 are coupled.

37 is a front view of the second unit 450, and FIG. 38 is a bottom view of the second unit 450.

Referring to Figs. 35 to 38, the second unit 450 includes a bracket portion 482 having a front-side reverse U-shape. Referring to Fig. 37, the bracket portion 482 includes side wall portions 482a and 482b extending in the vertical direction and a ceiling portion 482c connecting the side wall portion 482a and the side wall portion 482b. In this embodiment, the ceiling portion 482c is fixed to the bracket 394 (see Fig. 35).

Referring to Fig. 35, the side wall portion 482a has a concave portion 482d recessed toward the rear side at its front edge. The front end portion (rear end portion) of the concave portion 482d is curved in a side view approximately circularly. Referring to Fig. 36, the side wall portion 482b has a concave portion 482e recessed toward the rear side at its front edge. The front end portion (rear end portion) of the concave portion 482e is curved in a side view approximately circularly. The concave portion 482d and the concave portion 482e are provided at positions corresponding to each other in the left-right direction.

Referring to Fig. 35, the side wall portion 482a has a hole portion 482f at a rear portion thereof. The hole portion 482f penetrates in the left-right direction and extends upward from the lower edge toward the oblique upper side. A plate-like portion 483 is provided so as to protrude from the side wall portion 482a to the side (in the left direction in this embodiment) and to extend in the vertical direction along the rear edge of the hole portion 482f. The position of the upper end of the plate-like portion 483 in the vertical direction is substantially the same as the position of the central portion of the hole portion 482f in the vertical direction.

Referring to Fig. 36 and Fig. 37, a substantially cylindrical locking portion 484 is provided to extend laterally from the upper portion of the side wall portion 482b (in the right direction in this embodiment). As described above, the other end portion of the pressing member 454 is locked to the locking portion 484. Although the detailed description is omitted, referring to FIG. 32, the second unit 452 also includes the same bracket portion 485 as the bracket portion 482 and the same as the locking portion 484. The locking portion 486 has the other end portion of the pressing member 456 locked to the locking portion 486.

Referring to FIGS. 35 to 38, a substantially cylindrical shaft member 488 is provided at a substantially central portion of the bracket portion 482 so as to connect the side wall portion 482a and the side wall portion 482b. A pair of plate-shaped rocking members 490 are swingably attached to both ends of the shaft member 488 inside the bracket portion 482. Referring to Fig. 35 and Fig. 36, each of the swinging members 490 has a hole portion 490a penetrating in the left-right direction at the rear end portion thereof. The hole portion 490a will be described below.

A pair of pressing members 492 are attached to the bracket portion 482 above the shaft member 488. Specifically, one end portion of the pressing member 492 is locked to each of the side wall portions 482a and 482b above the shaft member 488. The other end portion of each pressing member 492 is locked to the rear end portion of the swinging member 490. Thereby, the rear end portions of the pair of swinging members 490 are pressed obliquely forward and upward by the pair of pressing members 492. That is, referring to Fig. 35, the pair of pressing members 492 presses the pair of swinging members 490 so that the pair of swinging members 490 rotate counterclockwise about the shaft member 488 when viewed from the left side.

Referring to FIGS. 35 to 38, a swinging member 494 is swingably attached to the shaft member 488 between the pair of swinging members 490. The swinging member 494 includes a plate-shaped locking portion 498 that is swingably supported by one of the shaft members 488 and a plate-shaped arm portion 496 that extends in the left-right direction so as to connect the rear end portions of the pair of arm portions 496, and the self-locking portion. 498 protrudes to the rear rectangular parallelepiped portion 500 (see FIGS. 35, 36, and 38), and a cylindrical report portion 502 that is provided at an end portion of the end surface of the protruding portion 500 and extends in the left-right direction. Referring to Fig. 35 and Fig. 38, one end of the reporting unit 502 (in the embodiment, the left end) is passed. The hole portion 482f protrudes further to the side than the side wall portion 482a (in the embodiment, the left side).

Referring to FIGS. 35 and 36, each arm portion 496 includes a hole portion 496a that penetrates in the left-right direction. The restricting member 504 is provided so as to be inserted into the hole portion 490a of the pair of swinging members 490 and the hole portion 496a of the pair of arm portions 496 and to connect the side wall portion 482a and the side wall portion 482b. In this embodiment, the restraining member 504 includes a pin. Further, in the state shown in Figs. 35 and 36, the restricting member 504 is locked to the lower end portion of the hole portion 490a and is locked to the upper end portion of the hole portion 496a. Therefore, in the state shown in Fig. 35, in the case of viewing from the left side, the rotation of the swinging member 490 in the counterclockwise direction is restricted by the restricting member 504, and the swinging member 494 is rotated in the clockwise direction. It is limited by the restriction member 504.

Referring to FIGS. 35 and 36, the hook portion 422c of the leg member 382 is disposed between the side wall portion 482a and the side wall portion 482b. The cylindrical support member 506 is rotatably inserted into the support portion 436 of the hook portion 422c (refer to FIG. 34). In this embodiment, the support member 506 includes a collar. Referring to FIGS. 37 and 38, the support member 506 is supported by the side wall portions 482a, 482b by the fastening member 508. Thereby, the hook portion 422c is swingably supported by the bracket portion 482 (the second unit 450) via the support member 506. In this embodiment, the fastening member 508 includes bolts, nuts, and washers. Although the detailed description is omitted, the hook portion 424c is also swingably supported by the second unit 452 in the same manner as the hook portion 422c. As a result, referring to Fig. 35, the leg member 382 can be swung in the vertical direction around the virtual swing axis 510 extending in the left-right direction (the width direction of the carriage 14d) by the center of the support member 506.

In addition, in FIG. 32, although the symbol is attached to the bracket part 485 and the latching part 486, the 2nd unit 452 includes the plate-shaped part 483 and the axis of the 2nd unit 450. a member 488, a pair of swing members 490, a pair of pressing members 492, a swinging member 494, a supporting member 506, and a fastening member 508 having the same plate-like portion, a shaft member, a pair of swing members, a pair of pressing members, The swinging member, the support member, and the fastening member.

In this embodiment, the bracket portions 482 and 485 and the hook portions 422c and 424c function as a connecting portion, and the shaft portion 402a functions as a rotating shaft.

Next, a method of connecting the bogie 14d (see FIG. 28) and the bicycle main body 12a (see FIG. 28) in detail will be described with reference to the drawings.

39 to 43 are left side views showing the state of the lock mechanism 380 and the leg member 382 when the trolley 14d in the grounded state (state shown in Fig. 30) is coupled to the bicycle body 12a. Further, in the following description, the clockwise direction and the counterclockwise direction refer to the direction when viewed from the left side.

First, referring to Fig. 35, in the grounded state, the lower end of the locking portion 498 of the swinging member 494 is located below the upper end of the locking portion 434a of the hook portion 422c. Thereby, the rotation of the hook portion 422c in the clockwise direction is restricted, and the rotation of the leg member 382 in the clockwise direction is restricted. Therefore, the leg member 382 cannot be set to a non-grounded state.

Referring to Fig. 39, when the bogie 14d is coupled to the bicycle body 12a, first, the bobbin 14d is moved to the bicycle so that the collar 370b of the rear wheel support unit 30a (see Fig. 29) is fitted into the recess 482d and the recess 482e (see Fig. 36). The body 12a side. At this time, referring to FIG. 39, the front end of the swinging member 490 is supported by the shaft. Ring 370b is raised to the top.

Then, referring to Fig. 40, the front end portion of the swinging member 490 covers the collar 370b by moving the carriage 14d to the bicycle body 12a side. As described above, since the swinging member 490 is pressed in the counterclockwise direction by the pressing member 492, the collar 370b is pushed downward by the swinging member 490. Thereby, the collar 370b can be prevented from falling off from the recessed portion 482d and the recessed portion 482e (see FIG. 36). Further, the front end portion of the arm portion 496 of the swinging member 494 is urged to the rear, and the swinging member 494 is rotated in the counterclockwise direction about the shaft member 488. Thereby, the locking portion 498 of the swinging member 494 is moved to be above the locking portion 434a of the hook portion 422c. Further, at this time, since the sliding member 478 is locked to the locking member 462 by one end portion 476a of the hole portion 476, it cannot move in the hole portion 476. Therefore, the foot frame member 382 cannot swing around the swing shaft 510. That is, the state in which the swing of the leg member 382 is restricted (the locked state) is maintained, and the ground state of the leg member 382 (the state shown in Fig. 30) is maintained.

Referring to Fig. 41, the first unit 448 (locking member 462) is operated in the counterclockwise direction (rearward) centering on the support member 472 and the support member 474 (see Fig. 32) by operating the operation lever 446 (see Fig. 34). Turn. Thereby, the sliding member 478 is detached from the one end portion 476a of the hole portion 476 to the front. As a result, the sliding member 478 can move downward in the hole portion 476, and the leg member 382 can swing. That is, the locked state of the foot frame member 382 is released. Further, as described above, since the locking portion 498 of the swinging member 494 is located above the locking portion 434a of the hook portion 422c, the rotation of the hook portion 422c is not restricted by the swinging member 494.

Next, referring to Fig. 42, the base member 382 is rotated in the clockwise direction about the swing shaft 510. Thereby, the auxiliary wheels 428, 430 (see FIG. 34) of the leg member 382 are away from the ground, and the leg member 382 is in a non-grounded state. At this time, the sliding member 478 moves downward in the hole portion 476 toward the other end portion 476b side.

As described above, the first unit 448 is pressed in the clockwise direction (frontward) by the pressing member 454 and the pressing member 456 (FIG. 32). Therefore, referring to Fig. 43, the operation of the operating lever 446 (refer to Fig. 34) is released when the sliding member 478 is moved to the lower end portion of the hole portion 476, whereby the first unit 448 (locking member 462) is in the clockwise direction ( Turn forward. Thereby, the sliding member 478 is fitted to the other end portion 476b of the hole portion 476, and is locked to the locking member 462. As a result, the sliding member 478 cannot move in the hole portion 476, and the leg member 382 cannot swing around the swing shaft 510. That is, the state in which the swing of the leg member 382 is restricted (the locked state) is maintained, and the ungrounded state of the leg member 382 (the state shown in FIGS. 28 and 31) is maintained. At this time, since the locking portion 434b of the hook portion 422c is located in front of the collar 370b, the collar 370b can be prevented from coming off from the recess 482d and the recess 482e (see FIG. 36). That is, it is possible to prevent the bicycle body 12a from being separated from the carriage 14d.

Although the description is omitted, since the second unit 452 has the same configuration as the second unit 450 as described above, the second unit 452 operates in the same manner as the second unit 450. Further, the relationship between the second unit 452 and the collar 372b is the same as the above relationship between the second unit 450 and the collar 370b.

In this embodiment, in the state shown in FIG. 43, the bracket portion 482 and the hook portion 422c are connected to each other so as to sandwich the collar 370b from the front and the rear. Collar 370b. Thereby, the bracket portion 482 and the hook portion 422c can be prevented from swinging in the left-right direction around the connection portion (the recess portion 482d and the locking portion 434b) of the collar 370b. Similarly, the bracket portion 485 and the hook portion 424c are coupled to the collar 372b so as to sandwich the collar 372b from the front and the rear. Thereby, it is possible to prevent the bracket portion 485 and the hook portion 424c from swinging in the left-right direction around the connection portion with the collar 372b. Therefore, the carriage 14d is coupled to the rear wheel support unit 30a so as not to be swingable in the left-right direction with respect to the rear wheel support unit 30a, similarly to the above-described carriage 14 (see FIG. 1). Further, the bracket portion 482 and the hook portion 422c are slidably coupled to the collar 370b in the circumferential direction with respect to the outer circumferential surface of the collar 370b. Similarly, the bracket portion 485 and the hook portion 424c are slidably coupled to the collar 372b in the circumferential direction thereof with respect to the outer circumferential surface of the collar 372b. Therefore, the carriage 14d can be coupled to the rear wheel support unit 30a in the vertical direction with respect to the rear wheel support unit 30a, similarly to the above-described carriage 14.

As shown in Fig. 28, the front end portion 374a of the stowage portion 374 of the bogie 14d connected to the bicycle body 12a is located further forward than the left rear wheel 108 and the right rear wheel 114 (see Fig. 29). In this case, the cargo loaded by the trolley 14d can be held more stably.

Further, when the bicycle main body 12a is separated from the bogie 14d, the ground member 382 may be grounded as shown in Fig. 35 from the non-grounded state shown in Fig. 43 by performing the operation opposite to the above.

In the case of the three-wheeled bicycle 10b, when the trolley 14d is not connected to the bicycle body 12a, as shown in FIG. 35, the reporting portion 502 is located below the upper end of the plate-like portion 483. On the other hand, when the bogie 14d is coupled to the bicycle body 12a, as shown in FIG. 43, the reporting unit 502 is located in the plate-like portion 483. More above. Therefore, for example, when the delivery person connects the bogie 14d to the bicycle main body 12a, it is possible to recognize whether or not the connection of the bogie 14d to the bicycle main body 12a is completed by confirming the position of the reporting unit 502 from the rear of the bogie 14d.

Further, in the trolley 14d, although the brake units 438, 440 of the base member 382 are operated by one operating lever 420, the respective operating levers may be provided on the brake unit 438 and the brake unit 440. Further, the mounting position of the operating lever for operating the brake units 438, 440 is not limited to the second handle frame 410. For example, an operating lever for operating the brake units 438, 440 may be attached to the first handle frame 404.

Further, in the bogie 14d, although the auxiliary wheels 428 and 430 of the leg member 382 cannot swing in the left-right direction, the auxiliary wheels of the leg member may be configured to swing in the left-right direction. For example, a caster that can swing in the left-right direction can be attached to the lower end of the main body portion 422a instead of the wheel support portion 422d and the auxiliary wheel 428, and a caster that can swing in the left-right direction can be attached to the lower end portion of the main body portion 424a instead of the wheel support portion. 424d and auxiliary wheel 430.

Further, in the bogie 14d, a pair of casters 378 are provided in the rear portion of the stowage portion 374, but the number of the casters 378 is not limited to two. For example, one caster 378 may be provided at the rear of the stowage portion 374, and three or more casters 378 may be provided.

10‧‧‧Three-wheeled bicycle

10a‧‧‧Three-wheeled bicycle

10b‧‧‧three-wheeled bicycle

12‧‧‧Bicycle body

12a‧‧‧Bicycle body

14‧‧‧Trolley

14a‧‧‧Trolley

14b‧‧‧Trolley

14c‧‧‧Trolley

14d‧‧‧Trolley

16‧‧‧ frame

30‧‧‧ Rear wheel support unit

30a‧‧‧ Rear wheel support unit

34a‧‧‧Support tube

34b‧‧‧Support tube

52‧‧‧Link unit

54‧‧‧Linking unit

54a‧‧‧ Link unit

86‧‧‧ front wheel

96‧‧‧ crank

98a‧‧‧ pedal

98b‧‧‧ pedal

104‧‧‧Chain

108‧‧‧Right rear wheel

110‧‧‧ axle

114‧‧‧ Left rear wheel

116‧‧‧Axle

120‧‧‧Standard Department

126‧‧‧foot frame

128‧‧‧ casters

128a‧‧‧1st casters

128b‧‧‧2nd casters

130‧‧‧Link unit

132‧‧‧Link unit

202a‧‧‧Axis

216a‧‧‧Axis

220‧‧‧Link unit

222‧‧‧Link unit

224‧‧‧Standard Department

244a‧‧‧Axis

262‧‧‧ spherical bearings

270a‧‧‧Axis

282‧‧‧foot frame

282d‧‧‧Auxiliary casters

282e‧‧‧Assistor casters

304‧‧‧Locking components

322‧‧‧foot frame

326‧‧‧Connecting Department

327‧‧‧Connecting Department

330a‧‧‧Assistor casters

330b‧‧‧Auxiliary casters

374‧‧‧Standard Department

378‧‧‧ casters

382‧‧‧foot frame

Fig. 1 is a left side view showing a three-wheeled bicycle according to an embodiment of the present invention.

Figure 2 is a plan view showing the rear end portion of the frame and the rear wheel support unit.

Fig. 3 is a perspective view showing the rear wheel supporting unit.

Figure 4 is a cross-sectional view taken along line A-A of Figure 2.

Fig. 5 is an enlarged view showing a connecting unit, (a) showing a front view of the connecting unit, and (b) a cross-sectional view taken along line B-B of the line (a).

Fig. 6 is an enlarged view showing the trolley, (a) showing a plan view of the trolley, and (b) showing a left side view of the trolley.

Fig. 7 is an enlarged view showing a connecting unit, (a) showing a plan view of the connecting unit, (b) showing a front view of the connecting unit, and (c) showing a left side view of the connecting unit.

Fig. 8 is a view for explaining a method of using the connecting unit, wherein (a) shows a front view of the connecting unit, (b) shows a left side view of the connecting unit, and (c) shows a front view of the connecting unit.

Figure 9 is a plan view showing the rear end of the bicycle body and the trolley.

Fig. 10 is a front view showing the relationship between the rear wheel support unit and the trolley.

Figure 11 is a view showing the relationship between the connecting unit provided on the rear wheel supporting unit and the connecting unit provided on the trolley, wherein (a) is a plan view showing the relationship between the two connecting units, and (b) is a two-way diagram showing two The relationship between the link units is a front view solution, and (c) is a left side view showing the relationship between the two link units.

Fig. 12 is a plan view showing the rear portion of the three-wheeled bicycle according to another embodiment of the present invention.

Fig. 13 is an enlarged view showing the trolley, (a) showing a plan view of the trolley, and (b) showing a left side view of the trolley.

Figure 14 is a diagram showing the relationship between three connection units, (a) is a plan view showing the relationship between three connection units, and (b) is a diagram showing the relationship between three connection units. The left side view of the system.

Fig. 15 is a view showing the relationship between two connecting units, (a) is a plan view showing the relationship between two connecting units, and (b) is a cross-sectional view taken along line H-H of (a).

Fig. 16 is a view showing another example of the bogie, wherein (a) shows a front view of the bogie, and (b) shows a left side view of the bogie.

Fig. 17 is a left side view showing the state of the bogie when it is used in connection with the bicycle body.

18 is a left side view showing the rear portion of the stowage portion, (a) is a view showing a state in which the swing of the caster in the left-right direction is restricted, and (b) is a view showing a state in which the swing of the caster in the left-right direction is not restricted. .

Fig. 19 is a rear elevational view showing the central portion of the rear frame in the left-right direction.

Fig. 20 is a left side view showing another example of the further trolley.

Fig. 21 (a) is a front view of the trolley of Fig. 20, and (b) is a view in which a part of the structure (a part of the rotating member, the shaft member, the fixing member, and the restricting member) is omitted in the front view of (a).

Fig. 22 is an enlarged view showing the left end portion of the lock mechanism and the leg member, (a) showing a front view of the lock mechanism and the leg member, and (b) showing a left side view of the lock mechanism and the leg member.

Fig. 23 is a view showing the constituent elements of the lock mechanism, (a) showing the bracket, (b) showing the lock member, and (c) showing the operation member.

Fig. 24 is a side view showing the state of the lock mechanism and the leg member when the bogie is coupled to the bicycle body, and (a) is a view showing a state in which the lock of the leg member by the lock mechanism is released, and (b) is a view showing A diagram of the state in which the locking of the foot frame member is released.

Fig. 25 is a side view showing the state of the lock mechanism and the leg member when the trolley is coupled to the bicycle body.

Fig. 26 is a cross-sectional view taken along line K-K of Fig. 24(a), wherein (a) is a view showing a state of the lock mechanism when the deforming member is not deformed, and (b) is a view showing a state of the lock mechanism when the deforming member is deformed.

Fig. 27 is a side view showing the trolley attached to the bicycle body.

Fig. 28 is a side view showing a three-wheeled bicycle provided with a wheel support unit that can be swung with respect to the rear lower fork and the front end of the stowage portion of the trolley is located further forward than the front ends of the left rear wheel and the right rear wheel.

Figure 29 is a plan view showing the rear portion of the bicycle body.

Fig. 30 is a side view showing the trolley in which the leg member is set to the ground state.

Fig. 31 is a side view showing the trolley in which the leg member is set to be ungrounded.

Figure 32 is a front view showing the trolley.

Figure 33 is a plan view showing the trolley.

Figure 34 is a perspective view showing the foot member.

Fig. 35 is a left side view showing the first unit and the second unit.

Fig. 36 is a right side sectional view showing the first unit and the second unit.

Figure 37 is a front view showing the second unit.

Fig. 38 is a bottom view showing the second unit.

Fig. 39 is a left side view showing the state of the lock mechanism and the leg member when the collar of the bicycle body is fitted into the recess of the bracket portion of the second unit.

Fig. 40 is a left side view showing the state of the lock mechanism and the leg member when the collar of the bicycle body is fitted into the recess of the bracket portion of the second unit.

Fig. 41 is a left side view showing the state of the lock mechanism and the leg member when the lock state of the leg member is released.

Figure 42 is a left side view showing the state of the locking mechanism and the leg member when the leg member is in an ungrounded state.

Figure 43 is a left side view showing the state of the locking mechanism and the leg member when the leg member is locked in the non-grounded state.

10‧‧‧Three-wheeled bicycle

12‧‧‧Bicycle body

14‧‧‧Trolley

16‧‧‧ frame

18‧‧‧ head tube

20‧‧‧Under the tube

22‧‧‧Seat tube

24‧‧‧ bracket section

26‧‧‧ rear fork

28‧‧‧Back fork

30‧‧‧ Rear wheel support unit

38‧‧‧ bracket

40a‧‧‧Fender bracket

40b‧‧‧Fender bracket

42‧‧‧Fenders

52‧‧‧Link unit

80‧‧‧Hand column

82‧‧‧Handles

84‧‧‧ front fork

86‧‧‧ front wheel

87‧‧‧ wheels

88‧‧‧ tires

90‧‧‧ seatpost

92‧‧‧s

94‧‧‧ drive unit

96‧‧‧ crank

96a‧‧‧Crank journal

96b‧‧‧ crank arm

96c‧‧‧ crank arm

98a‧‧‧ pedal

98b‧‧‧ pedal

100‧‧‧Active sprocket

102‧‧‧Electric motor

104‧‧‧Chain

106‧‧‧Battery

108‧‧‧ Left rear wheel

110‧‧‧ axle

111‧‧‧ Wheels

112‧‧‧ tires

120‧‧‧Standard Department

126‧‧‧foot frame

128‧‧‧ casters

130‧‧‧Link unit

134‧‧‧ side frame

138‧‧‧ front frame

162‧‧‧ Wheels

Claims (16)

A vehicle includes: a frame extending in a front-rear direction; a front wheel disposed at a front portion of the frame; a pair of rear wheels disposed side by side in a left-right direction at a rear portion of the frame; and a cargo handling trolley And the connecting portion that connects the frame and the cargo moving so that the cargo transporting trolley can swing in the vertical direction with respect to the vehicle frame and can swing in the left-right direction with respect to the vehicle frame Using the trolley; and the cargo handling trolley includes: a stowage portion for stowing the cargo; and a caster supporting the stowage portion and configured to be rotatable about a rotation axis extending in the up and down direction; the front end of the stowage portion is higher than the above The rear end of the pair of rear wheels is located further forward than the upper ends of the pair of rear wheels; and the caster is in contact with the cargo transport trolley via the connecting portion, and the casters are in contact with the ground. The vehicle according to claim 1, wherein the connecting portion includes: a first shaft portion extending in the left-right direction, a first connecting portion provided on the frame, connecting the first shaft portion and the frame, and The second transport unit is connected to the second shaft connecting portion and the second connecting portion of the cargo transporting vehicle, and the second connecting portion is swingable in the vertical direction around the first shaft portion. The vehicle according to claim 2, wherein the connecting portion includes a first connecting portion and a second connecting portion that are arranged side by side in the left-right direction, and the first connecting portion and the second connecting portion each include the first shaft portion and the first portion 1 a connecting portion and the second connecting portion. The vehicle according to claim 1, wherein the caster includes a first caster and a second caster arranged side by side in the left-right direction, and the connecting portion is coupled to the imaginary swing shaft that extends in the front-rear direction by the cargo transport trolley. The above frame and the above-mentioned cargo handling trolley. The vehicle according to claim 4, wherein the connecting portion includes a third connecting portion and a fourth connecting portion that are arranged side by side in the left-right direction, and the third connecting portion includes a second shaft portion extending in the left-right direction and is provided on the frame a third shaft portion that connects the second shaft portion and the frame, and a third shaft portion that extends in the left-right direction behind the second shaft portion, is provided on the cargo transport trolley, and is connected to the third a fourth connecting portion of the shaft portion and the cargo transporting carriage, and a fifth connecting portion connecting the second shaft portion and the third shaft portion, wherein the fourth connecting portion includes the second shaft portion side by side in the left-right direction a fourth shaft portion extending in the left-right direction, a bearing portion supporting the fourth shaft portion, a sixth connection portion provided on the frame, and a seventh connection portion provided on the cargo transport vehicle, and The sixth connecting portion and the seventh connecting portion are connected via the fourth shaft portion and the bearing portion, and the fourth connecting portion is provided to be movable around the third shaft portion. The fifth connecting portion is swingable in the vertical direction around the second shaft portion, and is swingable in the vertical direction about the third shaft portion; the bearing portion is the fourth shaft The fourth shaft portion is supported by the portion so as to be swingable about the swing axis. The vehicle of claim 5, wherein the sixth connecting portion connects the bearing portion and the frame, and the seventh connecting portion connects the fourth shaft portion and the cargo transporting cart. The vehicle of any one of claims 1 to 6, wherein the connecting portion is lower than the upper ends of the pair of rear wheels, and is located further forward than the rear ends of the pair of rear wheels and is more front than the front ends of the pair of rear wheels Located at the rear. The vehicle of any one of claims 1 to 6, wherein the joint portion is located between the pair of rear wheels. The vehicle of any one of claims 1 to 6, wherein the caster includes: a wheel and an axle rotatably supporting the wheel; the stowage portion includes: an axle ahead of the caster when the caster is at a rearmost position The first stowage portion and the second stowage portion that is located further rearward than the axle of the caster; the length of the first stowage portion in the front-rear direction is longer than the length of the second stowage portion in the front-rear direction. The vehicle of claim 9, wherein an area of the first stowage portion in a plan view is larger than a plan view of the second stowage portion. The vehicle of any one of claims 1 to 6, wherein the wheel of the caster is The diameter is smaller than the diameter of the rear wheel described above. The vehicle of any one of claims 1 to 6, further comprising: a crank disposed further forward than an axle of the pair of rear wheels; a pair of pedals disposed at both ends of the crank; and a transmission mechanism The torque of the crank is transmitted to at least one of the pair of rear wheels; and the front end of the stowage portion is located further forward than the axle of the pair of rear wheels and further rearward than the rotational track of the pair of pedals. The vehicle of any one of claims 1 to 6, wherein the caster does not protrude to the left or right side of the stowage portion when the caster is rotated about the rotating shaft. The vehicle of any one of claims 1 to 6, wherein the caster does not protrude further rearward than the stowage portion when the caster is rotated about the rotating shaft. The vehicle according to any one of claims 1 to 6, wherein the cargo transporting trolley further includes a first restricting mechanism that restricts the caster from swinging in the left-right direction. The vehicle according to any one of claims 1 to 6, wherein the cargo transporting trolley further includes: a footrest member that is swingably disposed forward of the caster and that supports the stowage portion, and is constrainable A second restricting mechanism for swinging the foot frame member; wherein the leg frame member includes one pair of auxiliary casters arranged side by side along the right and left sides.