JP3075031U - Wheeled tricycle - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To stably transport a push-type carrier in an easy posture. A sub-frame (10) bent in a V-shape is fixed to a bogie frame (1), and a handle (15) is formed on the sub-frame (10) to project diagonally upward from a bucket (2) toward the rear. The sub-frame 10 has auxiliary wheels 18 on both sides.
A wheel shaft 17 provided with a support shaft 3 is supported by the shaft, thereby forming a carrier having two auxiliary wheels 18 and three support wheels 3 supported by the bogie frame 1.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a hand-held three-wheeled vehicle used for transporting production materials and other transported goods in agriculture, civil engineering work, and the like.

[0002]

[Prior art]

 Conventionally, a push-type one-wheeled transport vehicle has a tray-shaped bucket mounted on a bogie frame, and has one supporting wheel at a lower front portion of the bogie frame, and is further parallel so as to extend rearward from the bogie frame. It has a structure in which a pair of handles are formed. Such a one-wheeled vehicle is provided with a pair of left and right stand legs bent substantially in a V-shape at the lower rear portion of the bogie frame, the left and right stand legs are grounded, and the stand legs and the support wheels are used at three points. Independent. In this state, after putting earth and sand etc. into the bucket, the handle is lifted and the stand legs are lifted, and the carrier wheel is driven by the support wheels to carry the vehicle.

[0003] In such a conventional push-type single-wheeled transport vehicle, since the transport is performed only by the support wheels, the center of gravity moves left and right during transport, and the stability is poor. In particular, elderly people and weak women with weak muscles, when carrying heavy loads, carry the truck with the center of gravity of the truck shifted, which makes it inconvenient to handle. There is also a risk of spilling the transported material. In addition, in order to maintain the center of gravity of the truck stably during transportation and transport the cargo loaded in the bucket without spilling, it is preferable to make the bucket approximately horizontal. In a transport vehicle, the height of the handle is generally applied to workers of standard height, and the handle is formed integrally with the bogie frame.Therefore, workers of high height are forced to bend down and cramped, and work efficiency is also improved. descend.

The present invention has been made to solve such a problem, and an object of the present invention is to provide a hand-held three-wheeled vehicle that can be stably transported in an easy posture.

[0005]

[Means for Solving the Problems]

 A hand-held three-wheeled vehicle according to the invention of claim 1 comprises a bucket for storing goods, a bogie frame on which the bucket is mounted, a single supporting wheel pivotally supported substantially at the front center of the bogie frame, and a handle. And a wheel shaft is assembled to the bogie frame, and a pair of left and right auxiliary wheels are provided at both ends of the wheel shaft.

[0006] With the above configuration, the transport vehicle is stably supported by three wheels, that is, two auxiliary wheels that are pivotally supported on the rear sides of the bogie frame, and one bearing wheel that is pivotally supported at the front center. At the time of transport, it is possible to transport the buckets for transporting production materials and other transported goods while maintaining the horizontal state. In addition, there is no need to lift the handle during transportation, just grasp the handle and push it out.

A hand-held three-wheeled vehicle according to the invention of claim 2 includes a bucket for storing a load, a bogie frame on which the bucket is mounted, and one bearing wheel pivotally supported at substantially the center of the front side of the bogie frame. And a handle, and a sub-frame is fixed to the bogie frame, and a pair of left and right grips extending to the rear side of the bucket is formed in the sub-frame. In addition to constituting the handle, a wheel shaft is assembled to a lower end of the sub-frame, and a pair of left and right auxiliary wheels is provided at both ends of the wheel shaft.

[0008] With the above configuration, the transport vehicle is stably supported by the three wheels of the two auxiliary wheels that are pivotally supported by the sub-frame and the one support wheel that is pivotally supported at the front center of the bogie frame, and At times, it is possible to transport the buckets that transport production materials and other transported goods while maintaining the horizontal state. Moreover, it is only necessary to grasp and push out the handle formed on the subframe during transportation.

[0009] The hand-held three-wheeled vehicle according to the third aspect of the present invention is the hand-held three-wheeled carrier according to the second aspect, wherein the sub-frame is bent into a substantially V shape having a front inclined portion and a rear inclined portion. And the end of the front inclined portion is fixed to the lower portion of the bogie frame, and the rear inclined portion is extended rearward of the bucket to constitute the grip portion. The bogie frame and the sub-frame are integrated by fixing the end of the bogie frame, and the wheel shaft is erected at the lower end of the sub-frame.

[0010] With the above configuration, the bogie frame and the subframe are integrated, and the three-wheeled vehicle is composed of two auxiliary wheels that are supported by the subframe and one support wheel that is supported by the front center of the bogie frame. Is stably supported. Then, when transporting, simply grasp the handle formed on the subframe and push it out.

[0011] A hand-held three-wheeled vehicle according to the invention of claim 4 is the hand-held three-wheeled carrier according to claim 1 or 2, wherein the handle is provided with a horizontal grip at the end of a pair of left and right grips. It is formed in a U-shape.

According to the above configuration, the carrier can be pushed out while holding the grip of the handle. At this time, the position of the handle can be freely changed, and in some cases, it can be operated with one hand, so that the operability is improved.

According to a third aspect of the present invention, there is provided a hand-held three-wheeled transport vehicle according to the first aspect, wherein a first handle and a second handle are formed on the bogie frame. The first handle and the second handle are formed at an interval in the up and down direction, and when one wheel runs on the support wheel pivotally supported by the bogie frame, and when three wheels run on the support wheel and the auxiliary wheel, It is configured so that either one of the first and second handles can be selectively used.

According to the above configuration, when three wheels travel with the support wheels and the auxiliary wheels grounded, the carrier is pushed out and transported by grasping the upper handle. On the other hand, when transporting as a single-wheeled transport vehicle, lift the lower handle, lift the auxiliary wheels for the rear wheels, and transport using only the front bearing wheels. In this way, by providing the upper and lower two-stage handles, the vehicle can be used as a three-wheeled vehicle or a one-wheeled vehicle depending on the purpose.

According to a third aspect of the present invention, there is provided a hand-held three-wheeled vehicle according to the first or fifth aspect, wherein a wheel shaft on which the auxiliary wheels are assembled and a handle are integrated to form a subframe unit. The sub-frame unit is configured to be able to be assembled to a bogie frame of an existing hand-held single wheel carrier.

According to the above configuration, the sub-frame unit is formed beforehand to form the sub-frame unit, so that the sub-frame unit can be easily assembled to the bogie frame. In addition, the sub-frame unit can be easily assembled to the bogie frame of the existing one-wheeled transport vehicle. A transport vehicle that can also be used as a three-wheel can be formed.

[0017]

[Embodiment of the invention]

 Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. In FIG. 1, reference numeral 1 denotes a bogie frame formed by bending a metal pipe into a substantially U-shape. The bogie frame 1A on which a tray-shaped bucket 2 is mounted and the bearing wheel 3 are pivotally mounted. And a frame 1B. As shown in FIG. 2, the main body frame 1A has a pair of left and right side rods 4, 4 and a front rod 5 connecting the front ends of the side rods 4, 4. The rear end 4 projects rearward from the bucket 2. In addition, a reinforcing rod 6 laid between the side rods 4, 4 is integrally fixed at a substantially central portion of the main body frame 1A by welding or the like, and is bent in a U-shape to the reinforcing rod 6. The front frame 1B is integrally fixed by welding or the like.

Reference numerals 10 and 10 denote sub-frames fixed to the bogie frame 1, which are formed by bending metal pipes, similarly to the main frame 1A. The sub-frame 10 has a pair of left and right side rods 11, 11 and a front rod 12 connecting the front ends of the side rods 11, 11, and has a substantially U-shaped planar shape. The side surfaces of the side bars 11, 11 have a front inclined portion 13 and a rear inclined portion 14, and are bent substantially in a V-shape. The front end of the front inclined portion 12 is integrally fixed to the side rods 4, 4 of the main body frame 1A by welding or the like, and the rear inclined portion 14 projects obliquely upward toward the rear side of the bucket 2. Thus, a pair of left and right grips 14A, 14A are formed, and the handle 15 is constituted by the grips 14A, 14A. At the approximate center of the handle 15, the ends of the side bars 4, 4 of the main body frame 1A are integrally fixed by welding or the like, whereby the main body frame 1A and the sub-frame 10 are integrated and the sub-frame 10 is integrated. A handle 15 formed on the drum 10 extends rearward from the main body frame 1A.

Further, bearing plates 16, 16 are fixed to the lower end of the sub-frame 10, which is a boundary between the front inclined portion 13 and the rear inclined portion 14, and a bearing mechanism (not shown) is attached to the bearing plates 16, 16. A wheel shaft 17 is mounted on the shaft. Further, a pair of left and right auxiliary wheels 18 are attached to both ends of the wheel shaft 17, respectively. In the drawing, reference numeral 20 denotes a grip attached to the end of the handle 15, and reference numeral 21 denotes a flat plate-like connecting plate provided on the rear end side of the main body frame 1A. Is fixed by a fixing screw 22.

The hand-carried three-wheeled vehicle constructed as described above has a stable three-wheel structure including two auxiliary wheels 18 supported on both sides of the rear portion of the main frame 1A and one support wheel 3 supported on the front center. , And can transport the bucket 2 while transporting the production materials and other transported goods while maintaining the horizontal state. Therefore, it can be transported extremely stably. In addition, since it is not necessary to lift the handle 15 during transportation, it is sufficient to simply grasp the handle 15 and push it out, so that it can be transported with a light force, and even a weak woman or an elderly person can easily transport it. . Further, in a state in which the auxiliary wheel 18 and the bearing wheel 3 are supported by three wheels, as shown in FIG. It is formed at a position where it can be grasped in a state, and although there is a slight difference in the degree of bending of the arm according to the height and body type of the worker A, it is not necessary to carry it in a crouched posture, but it is easy to carry it. And the labor required for the work can be reduced. Also, by transporting the vehicle with three wheels, ie, the auxiliary wheel 18 and the bearing wheel 3, it is easy to change the direction of the transport vehicle. That is, in the conventional single-wheeled transport vehicle, when the transport vehicle is tilted, the direction can be changed by tilting the transport vehicle. However, when the transport vehicle such as production material is loaded on the bucket 2, the transport vehicle is tilted. The cargo is dropped from 2. For this reason, when the direction is changed while the transported goods are loaded, it is necessary for the worker A to turn around the support wheel 6 and change the direction of the bucket 2 while keeping the transport vehicle horizontal. It is difficult to handle in narrow places. However, in this embodiment, if the steering wheel 15 is pressed downward and the bearing wheel 6 of the front wheel is lightly lifted, and one of the auxiliary wheels 18 of the rear wheel is further lifted to change the direction, the worker A You can easily change the direction of the truck while staying there.

In the first embodiment, an example is shown in which the side bars 11, 11 of the sub-frame 10 are extended rearward to form a handle 15 having two bar-shaped grips 14A. However, as shown in FIG. 5, the rear ends of the left and right grips 14A, 14A may be continuously connected by a horizontal grip 24 to form a U-shaped handle 15A. As described above, by forming the horizontal grip portion 24 on the handle 15A, the transporter can be pushed out by gripping the grip portion 24, and the transport operation becomes easier. In addition, the position at which the handle 15A is gripped by the worker A can be freely changed, and in some cases, it can be operated with one hand, so that the operability is improved.

FIGS. 6 to 8 show a second embodiment of the present invention. Parts having the same functions as those of the first embodiment are denoted by the same reference numerals, and the description of overlapping parts is omitted. Will be described only. In this example, upper and lower handles 25 and 26 are provided.

That is, in the present embodiment, as shown in FIG. 6, when the vehicle is driven by the auxiliary wheel 18 of the rear wheel and the support wheel 3 of the front wheel, the vehicle is gripped by the upper handle 26. Push and run. On the other hand, as in the conventional case, when traveling as a single-wheeled transport vehicle, as shown in FIG. 8, the lower handle 25 is lifted, the auxiliary wheel 18 of the rear wheel is lifted, and the vehicle is traveled only with the front support wheel 3.

As described above, in the present embodiment, the provision of the upper and lower two-stage handles 25 and 26 enables the vehicle to be used as a three-wheeled vehicle or a one-wheeled vehicle depending on the purpose. Also improve. In terms of structure, a single-wheeled transport vehicle having a conventional structure is used, and the upper handle 26, the left and right auxiliary wheels 18, and a wheel shaft for pivotally connecting the auxiliary wheels 18 to the bogie frame 1. It is extremely easy to incorporate a 17 into a three-wheeled single-wheeled carrier. That is, in the conventional one-wheeled transport vehicle, the side bar 4 of the bogie frame 1 is extended rearward to form a parallel bar-shaped handle, and this is used as it is as the lower handle 25. A pair of left and right stand legs 28, 28 bent substantially in a V-shape are integrated with the lower rear portion of the bogie frame 1, and a wheel shaft 17 is attached to the lower end of each of the stand legs 28, 28. A pair of left and right rotatable auxiliary wheels 18 are pivotally mounted on both ends of a wheel shaft 17 by fixing bearing plates 16, 16 for supporting each other. The bar-shaped handles 26 are integrally fixed along the outer sides of the rear inclined portions 29 of the stand legs 28, 28 bent in a V-shape by welding or the like. The handle 26 is inclined obliquely upward along the inclination of the stand legs 28, 28 so as to protrude above the lower handle 25, but when the handle 26 projects from the lower handle 25. It is inclined so as to spread slightly outward, and the tip of the grip 20 is bent in the horizontal direction.

In the present embodiment configured as described above, the upper handle 26, the left and right auxiliary wheels 18, and each of the auxiliary wheels 18 are pivotally connected to the bogie frame 1 of the single-wheeled transport vehicle having the conventional structure. By simply incorporating the wheel shaft 17 for this purpose, the vehicle can be used as a conventional one-wheeled vehicle or a three-wheeled vehicle as needed, resulting in a more multifunctional vehicle. In other words, when carrying heavy luggage, the upper handle 26 can be gripped and the left and right auxiliary wheels 18 and the bearing wheel 3 can be stably transported. On the other hand, the load to be loaded is small and the weight is light. In such a case, or in an empty state where the load to be loaded is unloaded, the handling of the carrier can be easily performed by gripping the lower handle 25 and traveling one wheel.

FIGS. 9 to 12 show a third embodiment of the present invention. Parts having the same functions as those of the first and second embodiments are given the same reference numerals, and the description of the overlapping parts is omitted. Only the differences will be described. In the second embodiment, an upper handle 26, left and right auxiliary wheels 18, and a wheel shaft for pivotally connecting each of the auxiliary wheels 18 to the bogie frame 1 using a one-wheeled transport vehicle having a conventional structure. In the present embodiment, as shown in FIG. 9, a pair of left and right handles 30, 30 and left and right auxiliary wheels 18, 18 and the respective auxiliary wheels 18, 18 are pivoted. A sub-frame unit 34 is formed by previously integrating a wheel shaft 32 for wearing. The handles 30, 30 bend the pipe so as to incline slightly from the middle to the outside, and also bend the portion of the clip 20 attached to the distal end. Also, bearing pipes 33, 33 are integrated with the lower ends of the handles 30, 30, respectively, by welding or the like, and the wheel shaft 32 is pivotally connected to the bearing pipes 33, 33. Auxiliary wheels 18, 18 are attached to both ends of the wheel shaft 32 to form a unit. Then, as described above, the subframe unit 34 in which the handles 30, 30 and the auxiliary wheels 18, 18 and the wheel shaft 32 are integrated is assembled to an existing one-wheeled vehicle as shown in FIG. That is, a bearing pipe 33 for pivotally attaching the wheel shaft 32 is fixed to the lower end side of the stand leg 28 integrated with the bogie frame 1, and the left and right handles 30, 30 are attached to the rear inclined portions 29 of the stand legs 28, 28. The handles 30, 30 and the stand legs 28, 28 are integrally fixed by welding or the like along the inside, so that the handles 30, 30 project above the handles 26, 26 of the transport vehicle, and the handlebars 30, 30 are vertically arranged. 30,26 are formed. As a result, similarly to the second embodiment, the vehicle can be used as a one-wheeled vehicle or a three-wheeled vehicle, and in the present embodiment, a pair of left and right handles 30, 30 and left and right auxiliary wheels Since the sub-frame unit 34 is formed by previously integrating the wheel shafts 32 for pivotally connecting the auxiliary wheels 18, 18, the auxiliary wheels 18, 18 can be easily mounted on the bogie frame 1 of the one-wheeled transport vehicle. . Also, by assembling the sub-frame unit 34 to the bogie frame 1 on an existing one-wheeled carrier, a carrier that can be used as a three-wheeled vehicle can be easily formed.

Although the embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various modified embodiments are possible within the scope of the present invention. For example, in the third embodiment, an example is shown in which the sub-frame unit 34 is formed by assembling the left and right handles 30, 30 each formed in a bar shape. However, the present invention is not limited to this, and as shown in FIG. A sub-frame unit 40 is constructed by assembling a handle 36 having a horizontal grip 35 and formed in a U-shape as a whole, and as shown in FIG. It may be assembled.

Further, the shape of the steering wheel is not limited to the above embodiments, and the basic configuration such as a steering wheel, an auxiliary wheel, or a bearing structure of a wheel shaft may be appropriately selected. The basic structure is not limited to the above embodiment, and may be appropriately selected.

[0029]

[Effect of the invention]

 According to the hand-held three-wheeled transport vehicle of the present invention, a bucket for storing a load, a bogie frame on which the bucket is mounted, a single support wheel pivotally supported at substantially the center of the front side of the bogie frame, and a handle And a pair of auxiliary wheels provided on both ends of the wheel shaft, so that two auxiliary wheels and one bearing wheel are provided. By stably supporting the transport vehicle with the three wheels, it is possible to transport the bucket while transporting the load while maintaining the horizontal state, and it is only necessary to grasp and push the handle during transport. For this reason, carrying work is also easy.

According to the hand-held three-wheeled transport vehicle of the invention of claim 2, a bucket for storing the transported object, a bogie frame on which the bucket is mounted, and one supporting wheel pivotally supported at substantially the center of the front side of the bogie frame. And a handle, comprising: a subframe fixed to the bogie frame; and a pair of left and right grips extending rearward of the bucket formed in the subframe. Since the handle is configured, a wheel shaft is attached to the lower end of the sub-frame, and a pair of left and right auxiliary wheels are provided at both ends of the wheel shaft. Thus, two auxiliary wheels are supported by the sub-frame. The carrier can be stably supported by three wheels, one of which is pivotally supported at the front center of the bogie frame. All you have to do is grab the handle and push it out. For this reason, transportation work is also easy.

According to the hand-held three-wheeled vehicle according to the third aspect of the present invention, in the hand-held three-wheeled vehicle according to the second aspect, the sub-frame is bent into a substantially V shape having a front inclined portion and a rear inclined portion. An end of the front inclined portion is fixed to a lower portion of the bogie frame, and the rear inclined portion extends rearward of the bucket to constitute the grip portion. Since the end of the bogie frame is fixed to integrate the bogie frame and the subframe, and the wheel shaft is provided at the lower end of the subframe, the bogie frame and the subframe are integrated. It is possible to form a truck with a robust structure.

According to the hand-held three-wheeled vehicle according to the invention of the fourth aspect, in the hand-held three-wheeled vehicle according to the first or second aspect, the handle connects a horizontal grip portion to an end of a pair of left and right grips. Since it is installed and formed in a U-shape, the position where the handle is gripped can be freely changed.

According to the hand-held three-wheeled vehicle according to the fifth aspect of the present invention, in the hand-held three-wheeled vehicle according to the first aspect, a first handle and a second handle are formed on the bogie frame. The first handle and the second handle are formed at an interval in the up and down direction, and when one wheel runs on the support wheel pivotally supported on the bogie frame, and when three wheels run on the support wheel and the auxiliary wheel. In this configuration, either one of the first and second handles can be selectively used. Therefore, by providing the upper and lower two-stage handles, a three-wheeled vehicle can be provided according to the purpose. It can be used as a one-wheeled vehicle.

According to the hand-held three-wheeled vehicle according to the invention of the sixth aspect, in the hand-held three-wheeled vehicle according to the first or fifth aspect, the wheel shaft and the handle on which the auxiliary wheels are assembled are integrated into a subframe. The unit is formed so that this sub-frame unit can be assembled to the bogie frame of an existing hand-held single-wheeled transport vehicle, so that the assembling work can be simplified and the existing one-wheeled transport By assembling the subframe unit to the bogie frame of the car, a carrier that can also be used as a three-wheel can be easily formed.

[Brief description of the drawings]

FIG. 1 is a perspective view of a truck showing a first embodiment of the present invention.

FIG. 2 is a front view of the same transport vehicle.

FIG. 3 is a plan view of the same transport vehicle.

FIG. 4 is a bottom view of the transport vehicle.

FIG. 5 is a perspective view of a transport vehicle showing a modified example of a steering wheel.

FIG. 6 is a front view showing a second embodiment of the present invention.

FIG. 7 is a perspective view of the same transport vehicle.

FIG. 8 is a front view of the same transport vehicle.

FIG. 9 is a perspective view of a sub-frame unit showing a third embodiment of the present invention.

FIG. 10 is a perspective view of a transport vehicle incorporating the subframe unit.

FIG. 11 is a perspective view of a sub-frame unit showing a modification of the handle.

FIG. 12 is a perspective view of a transport vehicle in which the subframe unit is incorporated.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bogie frame 2 Bucket 3 Bearing wheel 10 Sub-frame 13 Front inclined part 14 Rear inclined part 14A Gripping part 15,15A, 25,26,30,36 Handle 17,32 Wheel shaft 18 Auxiliary wheel 24,35 Gripping part 34, 40 subframe unit

Claims (6)

[Utility model registration claims] 1. A hand-held transport vehicle including a bucket for storing a transported object, a bogie frame on which the bucket is mounted, a single support wheel pivotally supported substantially at the front center of the bogie frame, and a handle. A hand-carried three-wheeled vehicle, wherein a wheel shaft is assembled to the bogie frame, and a pair of left and right auxiliary wheels are provided at both ends of the wheel shaft. 2. A hand-held transport vehicle comprising: a bucket for storing a transported object; a bogie frame on which the bucket is mounted; A sub-frame is fixed to the bogie frame, a pair of left and right grips extending rearward of the bucket are formed on the sub-frame, and the grips constitute the handle, and a wheel is provided at a lower end of the sub-frame. A hand-carried three-wheeled carrier, wherein a shaft is assembled and a pair of left and right auxiliary wheels are provided at both ends of the wheel shaft. 3. The sub frame is formed by bending into a substantially V shape having a front inclined portion and a rear inclined portion, and an end of the front inclined portion is fixed to a lower portion of the bogie frame, and The grip portion is formed by extending the inclined portion to the rear side of the bucket, the end portion of the bogie frame is fixed to the grip portion, the bogie frame and the subframe are integrated, and The hand-held three-wheeled vehicle according to claim 2, wherein the wheel shaft is provided at a lower end portion. 4. The hand-held three-wheeled transport according to claim 1, wherein the handle is formed in a U-shape by connecting a horizontal grip portion to end portions of a pair of left and right grip portions. car. 5. A first handle and a second handle are formed on the bogie frame, and the first handle and the second handle are formed.
The first and second steering wheels are formed at upper and lower intervals, and when the vehicle travels one wheel with the support wheels pivotally supported by the bogie frame, and when the vehicle travels three wheels with the support wheels and the auxiliary wheels. The hand-held three-wheeled vehicle according to claim 1, wherein one of the handles is selectively used. 6. A sub-frame unit is formed by integrating a wheel shaft with the auxiliary wheels assembled thereto and a handle, and the sub-frame unit is configured to be able to be assembled to a bogie frame of an existing hand-held single wheel carrier. The hand-held three-wheeled transport vehicle according to claim 1 or 5, wherein: