JP2007001556A - Hand-cart - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hand-cart capable of safely and efficiently performing carrying work, while securing a small turning radius, for a wider range of users on the basis of merits and demerits of a wheelbarrow, a two-wheeler, a three-wheeler and a four-wheeler cart to be used for manual transportation. <P>SOLUTION: A front wheel 7 and rear wheels 8, which are arranged with a small width between them, a gear position adjusting device 13 and a wheel side rotary bearing 10 are fitted to a wheel frame 4. A bucket 2, a stand 17, a gear section 16, a deck side rotary bearing 15 and an operation lever device 20 are fitted to a deck frame 3 unified with a handle 18. After arranging the deck frame 3 on the wheel frame 4, they are joined by a rotary shaft 4. Finally, a cable is connected, With this car body makeup, the problem can be solved. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention is used when carrying a load, and relates to a hand cart having a structure in which a loading frame is disposed on a wheel frame with wheels and joined together by a rotating shaft.

Conventionally, unicycles that are easy to use and have a small turn are most often used to transport earth and sand and materials. FIG. 21 is an example of a unicycle, and shows a state during transportation in a side view in (a) and in a front view in (b). This unicycle has a loading platform at the top and a wheel at the front below it, and lifts and transports a pair of rear handles using the lever principle. In addition, as a hand cart, a two-wheeled vehicle of FIG. 22 in which two tires are attached to a unicycle, and a three-wheeled vehicle of FIG. 23 or a four-wheeled vehicle of FIG. (The examples of FIGS. 22, 23, and 24 are illustrated in the same manner as the unicycle of FIG. 21)

Conventional unicycles are most popular because they are small and easy to use, but have the following drawbacks.

When lifting the handle of a unicycle with a load on it, if the load is heavy, there may be a case where the arm or waist is hurt to try to lift it forcibly, or the vehicle body is knocked down. There is a similar danger when pre-casting earth and sand.

It is difficult to continue the work because the burden of the weight of the load is also imposed on the carrier.

When an unfamiliar person handles or transports a place with poor scaffolding, the steering wheel operation tends to become unstable, and there is a risk of causing a rollover or an accident.

If you are not good at passing through the steps, and you try to get over it forcibly, you may spill luggage or knock down the car body due to impact or reaction.

It is difficult to balance with just one wheel, so it is difficult to use for those who are weak or unfamiliar. In order to carry it, it is necessary to continue to carry a handle that places a heavy burden on the load, so there are many people who have difficulty in using the legs and the elderly who cannot use it even if necessary.

There are two-wheeled vehicles that reduce the labor and stabilize the running compared to unicycles, but the weight of the load is somewhat greater, and the turn is not as efficient as a unicycle. In addition, it is not good at stepping over steps and has a drawback of being weak in lateral inclination.

Three-wheel and four-wheel vehicles are easy to carry because there is no burden on the load, and moreover they are more stable than unicycles and motorcycles. However, on the other hand, it is not possible to pass through a narrow place, weak to lateral inclination, the position of the loading platform can not be adjusted, and unless it is parked on a flat place, unless it has a parking braking device such as a parking brake, the transport vehicle will move freely. There is.

As described above, the two-wheeled vehicle and the three- to four-wheeled vehicle are very effective when used in a place where the respective features can be utilized, but each has a drawback that the small turn is not effective. This is the main reason why unicycles are widely supported despite a number of issues. Especially in construction sites and farms where demand is high, it is important to be able to make a small turn because it is often used under adverse conditions such as narrow places and narrow passages.

The present invention is based on the features and drawbacks of unicycles, motorcycles, and 3- to 4-wheel vehicles, and by pursuing better methods, it is safe and reliable while ensuring the ability to make small turns. The present invention is intended to provide a handcart that can efficiently transport and widen the user's width.

Means for solving the problems will be described with reference to the drawings. Each mechanism and configuration has an intention, and explanation is necessary, so that point is also supplemented.

A front wheel (7), a rear wheel (8), and a gear position adjusting device (13) are attached to the wheel frame (4). And the wheel side rotating bearing (10) is installed in the upper part of a wheel frame (4), after setting the load balance of a front wheel (7) and a rear wheel (8) arbitrarily.

The gear position adjusting device (13) is configured such that a cylindrical metal rod (13d) attached thereto can be moved back and forth in the metal rod moving hole (13b) by the operation lever device (20) and the cable system. The metal frame (13d) and the gear (16b) of the gear portion (16) mesh with each other, whereby the cargo bed frame (3) can be fixed at an arbitrary position (see FIGS. 7, 8, and 18). In a state where the lever of the operating lever device (20) is released from the hand, the metal rod (13d) is moved forward by the pressing spring (13f) and meshes with the gear (16b) or the upper portion of the gear (16b). Or place it in the space part. On the other hand, when the lever is pulled, the metal rod (13d) moves rearward and is disengaged from the gear (16b), so that the gear (16b) and the cargo bed frame (3) are freely moved. By such an operation, the cargo bed frame (3) can be fixed or arranged at an arbitrary position. The gear position adjusting device (13) includes a front horizontal pipe (4c) and a rear horizontal pipe (which are installed at the rear part of the wheel frame (4) so that the above function can be performed with the rotating gear part (16). It is attached to the upper side of 4d).

The lateral width between the rear wheels (8) can be set narrow so that the vehicle can travel even in a narrow place. If it is normal, the operation of the car body may become unstable. However, according to the configuration of the present invention, the wide stand (17) plays a role when the vehicle body is fixed and maintained. On the other hand, when carrying the vehicle, if the handle (18) is held with both hands, the vehicle body is safe. And since it can be operated easily, it is possible to compensate for the drawbacks caused by narrowing the lateral width between the rear wheels (8).

A bucket (2), a stand (17), and a gear part (16) are attached to a cargo bed frame (3) with a handle (18). Then, the platform-side rotary bearing (15) is installed at a lower portion of the platform frame (3) at a portion corresponding to the vicinity of the center of gravity of the bucket (2) main body when the bucket (2) is horizontal (state shown in FIG. 18). If the platform-side rotary bearing (15) is in that position, when the platform frame (3) is in a freely moving state, the stand (17), the gear portion (16), and the frame and handle (18) extending long in the rear, etc. Since the load carrier frame (3) tilts backward due to the weight of the vehicle body, the stand (17) is grounded and the vehicle body can be fixed and maintained regardless of whether or not there is a load. Moreover, as the bucket (2) and the center of gravity of the load move backward as the vehicle leans backward, it is convenient for fixing the vehicle body.

The left and right handles (18) are formed in a horizontal U shape. In this way, the degree of freedom of operation of the handle (18) is increased, and it is convenient for lifting, pushing down, pushing forward, and pulling backward. Alternatively, it can be changed to one of the lower handles (18).

The gear portion (16) is a combination of the gear holding plate (16a) and the gear (16b) fixedly attached to each other, on the lower side of the rear cargo bed lateral plate (3b) installed at the rear portion of the cargo bed frame (3). Install. The gear holding plate (16a) and the gear (16b) are molded into a shape along the circumference of the rotating shaft (14), and the teeth of the gear (16b) are evenly fitted so as to be surely engaged with the metal rod (13d). Line up (see FIG. 18). The lowermost tooth of the gear (16b) serves as a stop device when it rotates forward in the range in which the loading frame (3) can rotate, and the metal bar (13d) is the metal bar. The dimension is set to be long so that it always comes in contact with the rearmost position of the moving hole (13b) (see FIG. 19). In addition, a space is provided in the upper portion of the gear (16b) so that the metal rod (13d) does not mesh with each other even if the metal rod (13d) moves to the forefront of the metal rod moving hole (13b). The gear holding plate (16a) and the gear (16b) are configured so that the metal rod (13d) is disposed in the space above the gear (16b) just before the stand (17) is grounded. As a result, when the metal rod (13d) is arranged in the space above the gear (16b), the loading frame (3) is in a state of free movement. Then, the carrier frame (3) is tilted rearward and the stand (17) is grounded, so that the vehicle body can be fixed (see FIG. 20).

Place the carrier frame (3) on the wheel frame (4), align the shaft holes of the carrier-side rotary bearing (15) and the wheel-side rotary bearing (10), and then insert the rotary shaft (14). Join. By doing so, the cargo bed frame (3) can freely rotate around the rotation shaft (14). Since it rotates near the center of gravity of the bucket (2), the cargo bed frame (3) can be easily rotated up and down with the handle (18) in the position extending rearward as the operating point.

Finally, a cable system for moving the metal rod (13d) is connected from the operation lever device (20) to the gear position adjusting device (13).

The present invention is a hand cart (1) configured as described above.

First, the point that the present invention solved the problems of the conventional unicycle and led to the effect will be described.

Since the present invention is a mechanism for rotating the loading platform frame (3) up and down using the handle (18) located at a position extending long backward with the rotating shaft (14) near the center of gravity of the bucket (2) as a fulcrum, The handle (18) can be easily raised and lowered even in the state where the is placed, so that the lifting work can be made much easier as compared with the conventional unicycle. Further, if the handle (18) is raised while the lever is pulled, the center of gravity moves forward, which is convenient because the weight burden on the load is reduced. This is also effective in the case of pre-projection work such as earth and sand. If the handle frame (3) is lifted and the loading frame (3) is tilted forward, the center of gravity will also move forward. As a result, it becomes possible to work safely (see FIG. 19).

In addition, since the front wheel (7) and the rear wheel (8) are in contact with the ground, the vehicle body is stable, and the upper handle (18) moves in the vertical direction, so that the balance is not easily lost.

From the above, according to the present invention, it is possible to lift a unicycle safely and easily without a heavy burden on arms and waists, even by a weak user or an elderly person as well as general users. Can solve the problem.

In starting the transportation, the three-wheel or four-wheel transportation vehicle has no lifting work, but is in the present invention. However, as long as it is transported by human power, grasping the approximate weight of the luggage and checking whether the user can safely operate the vehicle body is an important safety confirmation before work. Carrying carefully or choosing a stable place depending on the condition of the baggage can raise safety awareness. As described above, according to the present invention, the handle (18) can be lifted without placing a burden on the arms and legs, while sufficient attention is paid to safety. Therefore, an appropriate action can be taken when starting transportation.

In the present invention, since all of the weight of the luggage and the vehicle body is applied to the front wheel (7) and the rear wheel (8), the loader is not burdened with weight. Since the carrier is mainly pushing and moving, the carrying work becomes much easier as in the case of a three-wheeled or four-wheeled vehicle, and the continuity of the work is greatly improved as compared with a unicycle.

In the present invention, since there is no burden on the load, the steering wheel (18) can be concentrated, and the front wheel (7) and the rear wheel (8) stabilize the vehicle body. Even if used under bad conditions, it is easy to balance and can be transported more safely than a unicycle. When the direction is changed, the front wheel (7) can be easily floated from the ground if the handle (18) is pushed down with the rear wheel (8) as a fulcrum while the loading frame (3) is fixed. If the handle (18) is directed in any direction as it is, the direction can be easily changed without breaking the balance.

Furthermore, the present invention is superior to a unicycle in use in a flat place, and the front wheel (7) and the rear wheel (8) support the vehicle body, so it has excellent straight running stability, no worries about spilling luggage, and heavier luggage. Can carry.

In the present invention, when passing through the step, the front wheel (7) can be easily lifted by pushing down the handle (18) with the rear wheel (8) as a fulcrum, as in the case of changing the direction. Then, if the vehicle moves forward with the height of the front wheel (7) slightly above the level difference, the level difference can be overcome. Subsequently, immediately after the front wheel (7) passes through the step, if the handle (18) is lifted with the front wheel (7) as a fulcrum, the rear wheel (8) can pass through the step. According to the present invention, in addition to the structure that is easy to operate, the handle (18) that is the point of action is in the rearward extended position, so that a series of operations can be performed easily and safely, and the problem of exceeding the step difference of the unicycle can be solved. can be solved.

Since various materials and pipes are often scattered at the construction site, the efficiency of transportation work will decline if they are cleaned up or detoured one by one. Also, when transporting ordinary roads with sidewalk steps and blocks, it is very inconvenient because it is difficult to cross the road without the ability to cross the steps. For these reasons, if you have the ability to easily get over the steps, you can use it to improve your work efficiency in various situations.

As described above, the present invention makes it easy to lift by the unique body configuration, exempts the burden of the load, and makes it easy to balance the grounding of the front wheel (7) and the rear wheel (8). Since each operation is easy to do, it is easy to handle even for those who are weak or unfamiliar.

As the population ages rapidly, many senior citizens are active in all industries. For example, in rural areas, many young people work on weekdays, so most of the farming work is left to the elderly. For elderly people with weak legs, it is very difficult just to carry farm tools and harvests. Even if you want to use a transport vehicle that does not bear the burden of transported goods, there are many opportunities to pass through narrow narrow roads and fences, so in the end, it seems that there are quite a lot of elderly people who have to rely on unicycles with small turns .

On the other hand, in order to use a unicycle, you must always hold the handle while carrying the weight of the object to be transported and balance it, so there are many potential elderly people who are in trouble because they cannot use it. It seems to have done.

However, according to the present invention, the vehicle body is configured so that the load of the load is not applied, and the vehicle can be run on narrow roads and saddles like a unicycle, and both hands are attached to the handle (18) like a silver cart. It can be easily transported by pushing and moving so that more elderly people can use it. As the population ages more and more in the future, there is an increasing need for handcarts that can be used with peace of mind by senior citizens not only in agriculture but also in various situations.

By the above thing, since not only a healthy person but many people can use this invention simply and safely, the subject which limits the difficulty of handling a unicycle and a user can be solved.

Next, the points that the present invention has solved the problems of the two-wheeled vehicle and the three- to four-wheeled vehicle and solved the problems will be described.

The front wheels (7) and rear wheels (8) attached to the wheel frame (4) of the present invention support the weight of the luggage and the vehicle body. is doing.

The present invention has a unique structure in which the wheel frame (4) and the cargo bed frame (3) are joined by the rotating shaft (14), and the wide stand (17) plays the role when the vehicle body is fixed and maintained. If the handle (18) is held with both hands during transportation, the vehicle body can be operated safely, so the lateral width between the rear wheels (8) can be reduced. Therefore, it is possible to solve the problem that a small turn of a two-wheeled vehicle or a three to four-wheel transport vehicle does not work. For example, it can be set to a lateral width of about 20 cm as shown in FIG. 2 so that it can pass on a scaffolding plate having a width of 25 cm, which is commonly used in construction sites. With this width, you can use it in almost any place, so you can focus on transport work without worrying about the width of the passage.

By the way, unicycles seem to have the smallest turn when viewed from the vehicle body, but in any case, since they are transported by human walking, the lateral width required for walking must also be considered. In addition, since the unicycle is transported in a balanced manner, it cannot be said that it can be safely transported without a width of 20 cm or more. In the above situation, even if the lateral width between the rear wheels (8) of the present invention is 20 cm, it can be said that the small turn is effective like the unicycle, and the traveling operation is stable even in a narrow place. Is more advantageous.

In the present invention, the lateral width between the rear wheels (8) can be set narrow, thereby producing other effects. It means that it is easy to stabilize the car body even on side slopes. FIG. 25 shows (a) the hand cart (1), (b) unicycle, (c) two-wheel vehicle, (d) three-wheel vehicle, and (e) four-wheel vehicle. The state which is driving | running | working on the horizontal slope of this is shown from the front. Since the front wheel (7) and the rear wheel (8) are concentrated near the center of the vehicle body as viewed from the front, the handcart (1) can easily bring the bucket (2) to the horizontal position, and the upper front wheel ( 7) One of the rear wheels (8) and the rear wheel (8) are always in contact with the road surface, so that stable running is possible, and the track can be easily corrected, so that it is easy to handle even on a sloping ground.

On the other hand, two-wheeled vehicles and three-wheeled and four-wheeled vehicles are difficult to keep the loading platform level, and they are affected by the side slopes, so there is a risk of spilling luggage and defeating the car body. . Although unicycles can keep the loading platform horizontal, they are not easy to walk and are only carried on the ground of a single wheel, so it is easy to lose balance.

As described above, when the present invention is transported on a laterally inclined land, the present invention makes it easier to stabilize the vehicle body than other transport vehicles, and further facilitates the operation, so that the luggage can be transported more safely.

Moreover, since it is such a structure, it can be said that it is easy to recover from rolling. Even if the vehicle body is tilted in a poor place, it is easy to return the bucket (2) to the horizontal position with the wide handle (18).

In the present invention, the position of the platform-side rotary bearing (15) is set so that the back of the platform frame (3) becomes somewhat heavier as the platform frame (3) rotates about the rotation shaft (14). Therefore, if the loading frame (3) is in a freely moving state, the stand (17) can be grounded and fixed so that the vehicle body does not move. The vehicle body can be fixed and maintained even though it is a transport vehicle having front wheels (7) and rear wheels (8).

In the present invention, the rotating carrier frame (3) can be fixed at an arbitrary position by the gear position adjusting device (13), so that the handle (18) can be placed at an appropriate position according to the physique of the carrier and the loading situation of the load. Can be set to It is also convenient because the handle can be adjusted to a position where it can be easily operated according to the slope of the slope.

As mentioned above, since the present invention can take over the advantages of two-wheeled vehicles and three- to four-wheeled vehicles, but can compensate for the drawbacks of these vehicles and provide functions necessary for transportation by using a unique body structure. It can solve the problems that three- and four-wheeled vehicles have.

I would like to supplement the effects of the present invention other than solving the problems of the conventional transport vehicles described so far.

By making the handle (18) of the present invention into a horizontal U shape, the handle (18) can be easily operated, and can be quickly changed to either the upper or lower handle (18) as required. it can. Normally, the height is set so as to carry with the handle upper part (18a), but if the rear wheel (8) is lifted by lifting the handle lower part (18b) with the front wheel (7) as a fulcrum, it can be used as a unicycle. Available. Further, by using the lower part (18b) of the handle, the work can be smoothly performed even when stepping over a step or performing a front throwing work.

Further, if the front frame (7) is lifted by pushing down the handle (18) while the cargo bed frame (3) is tilted forward, the carrying work can be performed only by the rear wheel (8). This is convenient in situations where the direction is frequently changed (see FIG. 26).

Therefore, the present invention other than Example 3 is usually transported by three wheels, but in some cases, it can be used as a unicycle or a two-wheeled vehicle using two rear wheels (8). It is very convenient because it can be used as a motorcycle with one wheel of the rear wheel (8), depending on the situation.

The present invention has many functions necessary for hand-carried transportation while having the ability to make a small turn, and can handle the car body at will with a simple structure and simple operation. Compared with the efficiency and efficiency of transportation work, it will be much more usable. In addition, since it is possible to work on the transport work with a margin, it becomes possible to pay attention to the surroundings and contribute to safety. For the reasons described above, the present invention can achieve the object.

Hereinafter, embodiments of the present invention will be described by dividing them into Examples 1 to 5.

Example 1 will be described with reference to the drawings.

First, the vehicle body configuration of the hand cart (1) of the first embodiment will be roughly described. FIG. 1 is a right side view of the hand cart (1). When the vehicle body is roughly divided into two, the lower side is the wheel frame (4), and the upper side is the cargo bed frame (3). The wheel frame (4) is provided with a front wheel (7), a pair of rear wheels (8), a gear position adjusting device (13), and a pair of wheel side rotating bearings (10). The carrier frame (3) integrated with the pair of handles (18) includes a bucket (2), a pair of stands (17), a pair of gear portions (16), a pair of carrier-side rotary bearings (15), A control lever device (20) and a cable are attached. By joining these with the rotating shaft (14), the cargo bed frame (3) can be rotated. The gear position adjusting device (13) and the gear portion (16) have a function of fixing and setting the position of the cargo bed frame (3) using a series of operations of the operation lever device (20) and the cable.

FIG. 2 is a front view of the hand cart (1). In the first embodiment, a three-wheel cart having two rear wheels (8) is illustrated. The lateral width between the rear wheels (8) is set to be about 20 cm so that the vehicle can run on a widely used scaffolding plate having a width of 25 cm. FIG. 3 is a rear view of the hand cart (1), and the attachment position of the pair of gear portions (16) and the gear position adjusting device (13) can be understood. The above is the outline of the hand cart (1) of the first embodiment.

Below, it divides into a wheel frame (4) and a loading platform frame (3), and each mechanism and the components attached are demonstrated in detail.

The structure of the wheel frame (4) will be described. The main body of the wheel frame (4) is configured by fitting the front pipe frame (4b) that is slightly thicker into the main pipe frame (4a) and fixing it by welding or the like. This assembly provides a solid framework for supporting the carrier frame (3) and holding the wheels. As a material for the front pipe frame (4b) and the main pipe frame (4a), a metal pipe such as iron, which is generally used, is used. However, if aluminum is used, the weight can be reduced.

The front pipe frame (4b) is thicker because it protects the front wheel (7) from obstacles and when it is turned upside down by the front throwing work, because much of the weight of the car body is concentrated there. This is to be able to withstand it.

FIG. 4 is a side view of the wheel frame (4). When viewed from the side, the wheel frame (4) has a shape of a horizontal straight line. Since it has a linear shape, it is possible to stably support the carrier frame (3) even when the load is heavy.

FIG. 5 is a plan view of the wheel frame (4). From this, the shape of the wheel frame (4) and the positions of the front wheels (7) and the rear wheels (8) can be clearly understood. The main pipe frame (4a) of the wheel frame (4) is formed as shown in FIG. 5 by bending one pipe. Specifically, the front part of the main pipe frame (4a) is narrowed so as to sandwich the front wheel (7) and the center part is narrowed by the wheel side rotary bearing (10) to stabilize the loading frame (3). And the rear part is narrowed in accordance with the installation of the rear wheel (8). On the other hand, the front pipe frame (4b) minimizes the impact when it collides with an obstacle, and can be tilted in either direction when the front pipe frame (4b) is pre-loaded on the fulcrum. , Processed into a U-shape. Therefore, when the main pipe frame (4a) and the front pipe frame (4b) are combined, the shape of the rhombus is elongated horizontally.

The attachment of the front wheel (7) will be described. Two metal front wheel bearings (5) made of metal are welded and fixed in parallel to the lower side of the front part of the main pipe frame (4a), and the front wheel (7) is placed between them before the front wheel axle (6). It is fixed so that the front wheel (7) can rotate freely. The front wheels (7) are premised on the use of tires with a wheel for unicycles that are generally popular (outer diameter of about 33 cm, tire width of about 6.5 cm), so even if the tires are damaged, get them Is simple and inexpensive. However, as long as there is no significant difference depending on the size, tires of other sizes can be substituted, which is flexible.

Since a large front wheel (7) is attached at that position, when it hits a low obstacle, the front wheel (7) jumps up and relaxes the impact.

The attachment of the rear wheel (8) will be described. As shown in FIG. 5, a metal front horizontal pipe (4c) and a rear horizontal pipe (4d) are fitted to the rear part of the main pipe frame (4a) and fixed by welding or the like. A metal main axle tube support pipe (11) is vertically arranged on the lower side of the front horizontal pipe (4c) so as to be slightly inward from both ends of the metal rear wheel axle tube (23). The rear wheel axle tube (23) at the lower end is connected as it is, and the respective contacting parts are fixed by welding.

In the lower part of the rear horizontal pipe (4d), metal sub-axle pipe support pipes (12) are respectively arranged at positions slightly inward from both ends of the rear wheel axle pipe (23), The rear wheel axle tube (23) is connected obliquely, and the contact portions thereof are fixed by welding. FIG. 6 is a bottom view of the wheel frame (4), and the arrangement of the sub-axle tube support pipes (12) can be seen from this.

In this way, by supporting the rear axle tube (23) with the main axle tube support pipe (11) and the sub axle tube support pipe (12), the rear wheel (8) alone can withstand the weight of the load or the entire vehicle body. It has been made.

After the two rear tires (8a) with the rear wheel (8b) are arranged at both ends of the rear wheel axle tube (23), they are fixed by the rear wheel axle (9). It is designed to be rotatable. In Example 1, the length of the rear wheel axle tube (23) is adjusted so that the lateral width between the rear wheels (8) is about 20 cm so that it can be transported even on a scaffolding plate having a width of 25 cm. . However, the width is not limited to this, and the rear wheel (8) and the rear wheel axle tube (23) may be configured at the manufacturing stage in accordance with the use situation.

In Example 1, the rear wheel tire (8a) having an outer diameter of about 20 cm and a width of about 5 cm is adopted, but the present invention is not limited to this size, and a similar product can be replaced with a commercially available product.

When viewed from the side, the metal wheel-side rotary bearing (10) has a “kamaboko” shape as shown in FIG. 4, and a wheel for passing the rotary shaft (14) slightly above the middle. A side rotation shaft hole (10a) is opened. Two wheel side rotary bearings (10) are respectively arranged at positions slightly located on the rear wheel (8) side from the center between the axles of the front wheel (7) and the rear wheel (8), and are fixed by welding. . If it exists in that position, the weight of the whole carrier frame (3) will come to apply more to a rear wheel (8) than a front wheel (7). As a result, when the steering wheel (18) is pushed down with the rear wheel (8) as a fulcrum when stepping over or changing the direction, the front wheel (7) can be easily lifted, and the operation becomes easy.

When the wheel frame (4) is viewed from above with reference to FIG. 5, the two wheel-side rotating bearings (10) are mounted in parallel on the upper part of the main pipe frame (4a). I understand that there is. The most widened portion of the main pipe frame (4a) corresponds to a position slightly on the rear wheel (8) side from the center between the axles of the front wheel (7) and the rear wheel (8). Since the wheel side rotary bearing (10) is a part that is considerably loaded, it is made thick enough to withstand. In order to increase the rigidity of the wheel-side rotary bearing (10) and the wheel frame (4), two metal rotary bearing fixing rods (10b) are arranged between the two wheel-side rotary bearings (10). It is fixed by welding. If the rotation bearing fixing rod (10b) is fixed to the portion where the rotation bearing fixing rod (10b) is fixed without any gap, the rigidity is further improved.

4 and 5, the gear position adjusting device (13) is arranged over the front horizontal pipe (4c) and the rear horizontal pipe (4d), and the contacting portion is fixed by welding. It is.

By the way, the front horizontal pipe (4c) and the rear horizontal pipe (4d) support the rear wheel axle pipe (23) as described above, in addition to the role of the installation position of the gear position adjusting device (13) just described. Further, it is useful for increasing the rigidity of the wheel frame (4). By devising the installation location, it can play a number of roles.

The operation of the gear position adjusting device (13) will be described. The gear position adjusting device (13) has a function of fixing the loading platform frame (3) at an arbitrary position by being engaged with or separated from the gear (16b) attached to the loading platform frame (3). . The reason is that the lever of the operating lever device (20) attached to the handle (18) is operated. When the lever is pulled, the inner wire (22) passing through the flexible pipe called the outer (21). The metal rod (13d) is pulled back while the push spring (13f) is contracted in conjunction with it. Then, since the metal bar (13d) is separated from the gear (16b), the loading frame (3) can be moved freely. On the other hand, when the hand is released from the lever, the metal rod (13d) is pushed forward by the extension characteristic of the push spring (13f), meshes with the gear (16b), and fixes the loading frame (3). . By such an operation, the cargo bed frame (3) can be fixed or arranged at an appropriate position. Since the cable system using the outer (21) and the inner wire (22) and the operating lever device (20) described here are conventional techniques, detailed description thereof is omitted.

The configuration of the gear position adjusting device (13) will be described with reference to the plan view of the gear position adjusting device (13) of FIG. The gear position adjusting device (13) is made of a metal material. After arranging two long plates (13a) of the same shape in parallel, the inner portion of each rear end is longer than the long plate (13a). A short plate (13c) having a short length is arranged and fixed by welding to form a U-shape. In the two long plates (13a), metal rod moving holes (13b) are formed in the same place in a rectangular shape (see FIG. 8). The height is adjusted to the thickness of the metal rod (13d), and has a margin enough to move sideways smoothly. The lateral length is adjusted to the extent that the metal bar (13d) can be engaged with and separated from the gear (16b), and even if the metal bar (13d) is located at the rearmost part, Designed to hit the bottom tooth. In addition to this configuration, as another method, it is also possible to use a single long plate and bend it into a U shape to finish it in the same shape.

The metal rod (13d) that moves back and forth in the metal rod movement hole (13b) has a cylindrical shape, and a hole is formed at a position located in the vertical center, and the inner wire (22) is the hole. You can pass through the inside. After placing the metal rod (13d), a metal rod stopper (13e) in the form of a short cylinder is fixed to each end of the metal rod by welding or an adhesive, and the metal rod (13d) is detached from the metal rod movement hole (13b). There is no way. As another example of attachment, the metal rod (13d) may be processed into a bolt and the metal rod stopper (13e) may be processed into a shape like a nut and tightened and fixed.

The inner wire (22) extending from the lever enters from the hole formed in the middle portion of the short plate (13c), penetrates between the push springs (13f), and further passes through the hole of the metal rod (13d). Immediately after passing, it is attached with a nipple (22a) which is the end. The outer (21) covering the inner wire (22) extends to an outer stopper (21a) provided in front of the hole of the short plate (13c).

When the spring of the push spring (13f) is released from the lever, the metal rod (13d) is pushed and extended so as to move to the front of the metal rod moving hole (13b), while the lever is pulled. Has a characteristic that the metal rod (13d) can be shrunk until it is located at the rearmost part of the metal rod moving hole (13b).

FIG. 8 is a side view of the gear position adjusting device (13). FIG. 9 is a rear view of the gear position adjusting device (13) as viewed from the rear of the hand cart (1). FIG. 10 is a front view of the gear position adjusting device (13). In addition to the plan view of the gear position adjusting device (13) of FIG. 7, the configuration of the gear position adjusting device (13) can be understood by referring to these drawings.

The structure of the carrier frame (3) will be described with reference to the right side view of the carrier frame (3) portion of FIG. In FIG. 11, FIG. 12, and FIG. 13, the bucket (2) is removed for easy understanding of the configuration of the loading frame (3). The loading frame (3) is formed as shown in FIG. 11 when viewed from the side by bending a single metal pipe. The front side of the carrier frame (3) is suitable for holding the bucket (2), while the rear side of the carrier frame (3) is easy for the carrier to operate the handle (18) and The length of the pipe frame, the inclination, and the position of the handle (18) are adjusted and bent so that an appropriate posture can be maintained by the operation.

The shape of the handle (18) is a horizontal U shape. With such a shape, when the handle (18) is lifted, pushed down, pushed forward, or pulled backward, the position where the handle (18) is gripped can be changed smoothly according to each operation. Moreover, it can be quickly transferred to either the upper or lower handle (18) as required. Normally, the height is set so as to carry with the handle upper part (18a), but it can be used as a unicycle by lifting the handle lower part (18b) with the front wheel as a fulcrum and floating the rear wheel (8). If the lower handle (18b) is used, it is convenient for lifting the rear wheel (8) over the step or for tilting the vehicle body forward in the front throwing operation. In addition, it is set so that the handle lower part (18b) may be located in a part lowered by 10 cm to 15 cm from the handle upper part (18a). By making the handle (18) in a horizontal U shape in this way, it is easy to perform each operation, and it is possible to add a convenient function such as use as a unicycle.

The operating lever device (20) in which the outer (21) and the inner wire (22) are connected is attached near the tip of the upper left handle (18a) in the first embodiment, but instead the upper right handle (18a). ) There is no problem even if it is installed near the tip.

A metal front loading platform horizontal plate (3a) in which the metallic loading platform side rotating bearing (15) is installed so as to correspond to the vicinity of the center of gravity of the bucket (2) when it is horizontal (state in FIG. 18). On the lower side, two pieces are arranged in parallel in accordance with the width contacting the outside of the wheel side rotating bearing (10), and the upper part is fixed by welding. The installation at this position has two major functions. One is that since the platform-side rotary bearing (15) is in the vicinity of the center of gravity of the bucket (2), the platform frame (3) can be easily rotated up and down by the handle (18) extending backward. . The other is that the stand (17), the gear part (16), the handle (18), the rear pipe frame, etc. are weighted in the state where the gear (16b) attached to the loading frame (3) is not locked. (17) is grounded and the hand cart (1) can be fixed and maintained.

The platform-side rotary bearing (15) is shaped like the “kamaboko-shaped” of the wheel-side rotary bearing (10), and the platform-side rotation for passing the rotary shaft (14) slightly below the middle. A shaft hole (15a) is opened.

The gear holding plate (16a) and the gear (16b) constituting the pair of metal gear portions (16) are respectively formed in a shape along the circumference of the rotating shaft (14). In this form, as shown in FIGS. 18 to 20, even if the gear (16b) rotates up and down, the positional relationship with the gear position adjusting device (13) does not change. it can. As a result, a series of operations for biting and separating can be stably performed. The gear portion (16) passes between the gear position adjusting devices (13), and is arranged at a position where the metal rod (13d) can bite and release the gear (16b). And, it is fixed to the rear rear carrier plate (3b) made of metal on the gear portion (16) by welding.

A pair of metal-made square pipe stands (17) are arranged in parallel under the cargo bed frame (3) and fixed by welding. By installing at an angle, the bottom surface of the stand (17) is further away from the ground during transportation. As a result, the stand (17) is less likely to come into contact with the ground even when traveling on an uneven surface. In addition, a stand reinforcing pipe (17a) made of a metal round pipe is disposed between the pair of stands (17) and fixed by welding.

FIG. 12 is a plan view of the cargo bed frame (3). From this figure, it can be understood that the framework that forms the basis of the cargo bed frame (3) is processed by bending one pipe frame. The lateral width of the front portion of the cargo bed frame (3) is adjusted to the width of the end of the bottom surface on the rear side of the bucket (2). Then, the pipe frame is bent so as to spread laterally from the rear part of the cargo bed frame (3) to the base of the handle (18).

Inside the platform frame (3), a front platform horizontal plate (3a) to which a platform-side rotary bearing (15) is attached, a rear platform horizontal plate (3b) to which a gear portion (16) is attached, and metal No. 2 horizontal pipes (3c) are arranged and fixed by welding. The above-mentioned front carrier horizontal plate (3a), rear cargo carrier horizontal plate (3b), cargo carrier horizontal pipe (3c), and stand reinforcement pipe (17a) increase the rigidity of the carrier frame (3) and are strong against torsion. It is useful to raise.

A rubber or plastic cap (19) is fitted at the tip of both handle upper parts (18a) to improve the appearance and prevent foreign matter from entering the hollow of the pipe.

FIG. 13 is a bottom view of the cargo bed frame (3). If this figure is seen, the installation place of a loading platform side rotation bearing (15), a gear part (16), and a stand (17) can be understood.

The gear section (16) will be supplementarily described below. FIG. 14 is a right side view of the gear portion (16). To ensure that the metal rod (13d) and the gear (16b) can be engaged with each other, the teeth of the gear (16b) are evenly arranged in parallel while ensuring a distance corresponding to the size of the metal rod (13d). ing. Then, the number and size of the teeth of the gear (16b) are set so that the loading frame (3) can be fixed at an appropriate position and the stand (17) can be securely grounded. In Example 1, when the bucket (2) is horizontal as shown in FIG. 18, the metal rod (13d) is disposed between the teeth of the third and fourth gears (16b) from the top. For example, if this is used as a reference point, the bucket (2) can be tilted forward in the remaining four stages, and conversely, the bucket (2) is tilted backward from the reference point and positioned in the second stage. be able to.

The lowermost tooth of the gear (16b) serves as a stop device when it rotates forward in the range in which the loading frame (3) can rotate, and the metal bar (13d) is the metal bar. The dimension is set to be long so that it always comes in contact with the rearmost position of the moving hole (13b) (see FIGS. 14 and 19).

In the upper part of the gear (16b), even if the metal rod (13d) is in front of the metal rod moving hole (13b), there is provided a space where nothing is in contact. The gear portion (16) and the gear (16b) are designed so that the space moves to the position of the metal rod (13d) just before the stand (17) contacts the ground. When the metal rod (13d) is disposed in the space, the loading frame (3) is in a freely moving state, and as a result, the loading frame (3) is tilted rearward and the stand (17) is grounded to fix the vehicle body. Can be maintained (see FIGS. 14 and 20).

FIG. 15 is a rear view of the pair of gear portions (16). The gear holding plate (16a) and the gear (16b) are fixed by welding or the like to form one combination, and the same combination is arranged in parallel and fixed by welding with the gear fixing part (16c). ).

FIG. 16 is a plan view of the hand cart (1). The bucket (2) has a boat-like shape used in conventional unicycles and has an open upper surface. The material used heretofore may be iron, aluminum, polypropylene resin, or the like. The bucket (2) and the carrier frame (3) can be attached by screwing or welding, but any attachment method is possible. Since these are conventional techniques, description thereof is omitted.

FIG. 17 is a bottom view of the hand cart (1). From this figure, the positional relationship between the carrier frame (3) and the wheel frame (4) can be understood.

The attachment of the wheel frame (4) and the carrier frame (3) will be described. The carrier frame (3) is disposed on the wheel frame (4), and after the shaft holes of the pair of carrier-side rotary bearings (15) and the pair of wheel-side rotary bearings (10) are aligned, two rotations are performed. Each shaft (14) is inserted and joined. By doing so, the cargo bed frame (3) can freely rotate around the rotation shaft (14). Then, a cable system for moving the metal rod (13d) is connected from the operation lever device (20) to the gear position adjusting device (13). This completes the hand cart (1) of the present invention, and can have many functions necessary for hand transport as described above.

In addition, about the attachment of a rotating shaft (14), a front-wheel axle (6), a rear-wheel axle (9), and mounting | wearing of a bearing, since a conventional technique is utilized, detailed description is abbreviate | omitted.

Since the hand cart (1) of the present invention can easily lift the handle (18) and there is no burden of the weight of the load during transportation, the box (24) for storing small items is placed in the bucket (2). It can be attached to the rear cargo bed frame (3).

FIG. 27 is a right side view of the handcart (1) to which the box (24) is attached. FIG. 28 is a plan view of the hand cart (1) to which the box (24) is attached, and FIG. 29 is a rear view of the hand cart (1) to which the box (24) is attached.

In FIG. 28, the upper surface of the box (24) is open, but a lid or a cover may be attached. There are many mounting methods, such as screw tightening, but since it is a conventional technique, a detailed description is omitted.

For example, when harvesting vegetables or cutting weeds in farm work, horticultural knives and sickles are loaded on a unicycle, but on the way home there is no space to place sickle etc. There is a case to drop it. In particular, the sickle has an exposed blade, which can cause accidental injury.

The box (24) is very convenient because it can safely carry props necessary for farming work, and can carry things necessary for the carrier such as union and drink separately from luggage. Although the rear part of the carrier frame (3) is somewhat heavy, the cargo to be loaded into the bucket (2) is slightly shifted to the front side of the bucket (2), or the carrier frame (3) is tilted forward, so that the carrier frame (3) If the center of gravity is moved forward, it can be safely transported as usual without significantly reducing operability. With the unique structure of the present invention, even if the box (24) is attached, the burden on the transporter can be minimized and the convenience of the transporter can be enhanced.

The present invention is a hand cart (1) configured as described above. When using this, when holding the pair of handles (18) with both hands and pulling the lever of the operating lever device (20) attached to one handle (18), the metal rod ( 13d) is released. If the handle (18) is lifted while pulling the lever, the stand (17) is separated from the ground, and the hand cart (1) is ready to move. Then, if the position of the handle (18) is determined and the lever is released, the metal bar (13d) and the gear (16b) mesh with each other to fix the load frame (3), so after that, the handle (18) is pushed to start transporting. Can do. The direction change, step difference and front throwing work are performed by raising and lowering the handle (18) with either the front wheel (7) or the rear wheel (8) as a fulcrum while the loading frame (3) is fixed. When the vehicle body is fixed and maintained, the carrier frame (3) is tilted backward until the stand (17) is in contact with the ground while the lever is pulled, and the metal rod (13d) is placed in the space above the gear (16b). If the lever is released after it is determined that is placed, the stand (17) can be grounded as it is, and the vehicle body can be fixed and maintained.

In addition, since Example 2, Example 3, Example 4, and Example 5 demonstrated from now on are the same usage methods, description is abbreviate | omitted.

As a second embodiment, a hand cart (1A) that can arbitrarily tilt the pair of rear wheels (8) according to the situation will be described. Since the configuration other than the rotating device of the rear wheel (8) is the same as that of the hand cart (1) of the first embodiment, the description thereof is omitted.

FIG. 30 is an enlarged right side view of the rear wheel (8) portion of the hand cart (1A) of the second embodiment. In this figure, the rear wheel (8) in front is removed for easy understanding of the device.

A front axle tube support pipe (25) having a U-shaped metal shape is vertically arranged at the lower part of the front horizontal pipe (4c) and fixed by welding. And the metal front axle pipe bearing (28) is welded and attached to the lower end.

On the other hand, a rear axle pipe support pipe (26) having a U-shape made of metal is obliquely arranged at the lower part of the rear horizontal pipe (4d) and fixed by welding. And the metal rear axle pipe bearing (29) is welded and attached to the lower end.

A metal rear wheel rotary axle tube bearing (32) is disposed between the front axle tube bearing (28) and the rear axle tube bearing (29), so that the metal rear wheel rotation shaft (30) can be rotated. It is fixed with. A metal rear wheel rotating axle tube (31) is attached to the rear wheel rotating axle tube bearing (32) in advance by welding. With this configuration, the rear wheel axle tube (31) can rotate.

A pair of rear wheels (8) are arranged at both ends of the rear wheel rotating axle tube (31), and are fixed by a rotating rear wheel axle (36) so as to be rotatable. The mounting of the rotating rear wheel axle (36) and the rear wheel rotating shaft (30) will not be described in detail because the conventional technology is used.

Between the front axle tube support pipe (25) and the rear axle tube support pipe (26), two metal support pipe transverse pipes (27) are arranged at the same position on both the left and right sides and fixed by welding. .

Two metal upper spring hook rings (34) are arranged at the same position on the left and right sides of the two supporting pipe horizontal pipes (27), and are fixed by welding. On the other hand, two metal lower spring hook rings (35) are arranged on the upper part of the rear wheel rotating axle tube (31) in accordance with the vertical position of the upper spring hook ring (34) and fixed by welding. .

Between the upper spring hook ring (34) and the lower spring hook ring (35), left and right metal tension springs (33) are arranged, and hooks at both ends thereof are hooked on the ring and fixed. Due to the characteristics of the two tension springs (33), the pair of rear wheels (8) tends to maintain a horizontal posture, so that the vehicle body tends to be stable.

FIG. 31 is an enlarged rear view of the rear wheel (8) portion of the hand cart (1A). From this figure, the shape of the rear axle tube support pipe (26) can be understood. The front axle tube support pipe (25) has a similar shape, both of which are designed so that the gear portion (16) can pass through.

FIG. 32 is a rear view of the state where the hand cart (1A) is traveling on a laterally inclined land. Since the device capable of rotating the rear wheel (8) can easily bring the bucket (2) to a horizontal position even on a laterally inclined land, the baggage can be transported more safely.

As a third embodiment, a hand cart (1B) with one rear wheel (8B) will be described. Although it does not reach Example 2 with two rear wheels, the tire of the rear wheel (8B) is thickened to increase the flatness, so that stable running is possible. Since the configuration other than the attachment of the single rear wheel (8B) is the same as that of the hand cart (1) of the first embodiment, the description thereof is omitted.

FIG. 33 is a right side view of the hand cart (1B) according to the third embodiment. The metal rear wheel support pipes (37) are arranged on the outside of the rear wheels (8B) one by one on the left and right sides, and fixed to the front horizontal pipe (4c) and the rear horizontal pipe (4d) located above by welding. ing.

A metal rear wheel bearing (38) is fixed to the lower part of both rear wheel support pipes (37) by welding, and a rear wheel (8B) is disposed between them, so that the rear wheel axle (9B) can be rotated. ).

The pair of gear portions (16) are designed to move between the pair of rear wheels (8) in the hand cart (1) of the first embodiment, but the hand cart (1B) of the third embodiment. Then, both sides of the rear wheel (8B) are moved.

FIG. 34 is an enlarged plan view of the rear wheel (8B) portion. As the distance between the pair of gear portions (16) increases, the rear portions of the gear position adjusting device (13) and the main pipe frame (4a) also increase in width.

The left and right gear portions move between the rear wheel (8B) and the long plate (13a) of the gear position adjusting device (13).

FIG. 35 is a rear view of the hand cart (1B) of the third embodiment. If this figure is seen, the positional relationship of a gear part (16) and a gear position adjustment apparatus (13) can be understood.

This hand cart (1B) is slightly inferior in running stability to the hand cart (1) of the first embodiment, but it is agile and the bucket (2) can be placed in a horizontal position even on uneven road surfaces and side slopes. There is an advantage that it is easy to maintain.

As a fourth embodiment, a hand cart (1C) including a deep bucket (2C) will be described. This handcart (1C) is suitable for carrying heavy objects such as ready-mixed concrete, cement, or earth and sand, and features a deep bucket (2C) and a loading platform frame (3C) different from the first embodiment. To do. Since the configuration of the wheel frame (4) is the same as that of the hand cart (1) of the first embodiment, description thereof is omitted. Also, description of components and configurations similar to those of the first embodiment is omitted.

FIG. 36 is a right side view of the hand cart (1C) according to the fourth embodiment. A pair of metal stand frame pipes (39) are arranged at the same position on the left and right sides of a carrier frame (3C) integrated with a pair of metal handles, and are fixed by welding. In the middle of the stand frame pipe (39), a pair of metal stand frame horizontal pipes (40) are arranged at the same position on the left and right sides in accordance with the position of the bottom of the bucket (2C), and both ends of the stand frame pipe (40 39) and fixed by welding. Although it seems that the stand frame horizontal pipe (40) and the bucket (2C) are in contact with each other in the figure, this is not the case and, as will be described later, a bearing plate attached to the stand frame horizontal pipe (40). (41) is arranged at the bottom of the bucket (2C) to support the bucket (2C).

The metal bucket (2C) has a probe shape with a bottom having an arcuate curved surface, and the upper part is processed into a frame shape. The bucket (2C) is disposed so as to fit into the loading platform frame (3C), and the frame portion of the bucket (2C) and the loading platform frame (3C) are fixed by welding or screwing.

A metal bearing plate (41) and a metal gear plate (42) are attached to the stand frame horizontal pipe (40). A pair of metal carrier-side rotary bearings (15) are welded to the lower part of the bearing plate (41), while a pair of metal gear parts (16) are welded to the lower part of the gear part plate (42). It is fixed.

FIG. 37 is a plan view of the hand cart (1C). From this figure, the shapes of the carrier frame (3C) and the bucket (2C) can be understood.

FIG. 38 is a bottom view of the hand cart (1C). From this figure, the installation location of the bearing plate (41) and the gear portion plate (42) can be seen. A metal bucket support pipe (43) for supporting the bucket (2C) and increasing the rigidity of the load frame (3C) is fixed to the rear part of the load frame (3C) by welding.

FIG. 39 is a front view of the hand cart (1C). From this figure, it can be seen that the bearing plate (41) supports the bucket (2C). The position of the stand frame horizontal pipe (40) is also shown.

FIG. 40 is a rear view of the hand cart (1C). In this figure, the gear plate (42) also appears to be in contact with the bucket (2C), but as can be seen from FIG. 36, the gear plate (42) is arranged on the upper portion of the gear portion (16). Is not in contact with the bucket (2C). As described above, the basic configuration is almost the same as that of the first embodiment, but it can be seen that the configuration of the loading frame (3C) is changed in accordance with the shape of the bucket (2C).

As Example 5, a hand cart (1D) having a flat carrier will be described. This hand cart (1D) is capable of carrying various types of luggage because the loading platform is flat, and is particularly suitable for carrying boxes and container boxes. Since the configuration of the wheel frame (4) is the same as that of the hand cart (1) of the first embodiment, description thereof is omitted. Also, description of components and configurations similar to those of the first embodiment is omitted.

FIG. 41 is a right side view of the hand cart (1D) of the fifth embodiment, and shows a state in which three container boxes are mounted.

The cargo bed portion corresponding to the cargo bed frame (3) is constituted by a metal front cargo bed frame (45) and a metal rear cargo bed frame (46). The front carrier frame (45) is a flat carrier frame, while the pair of rear carrier frames (46) includes a handle (18) and a stand (17D), respectively. The part where the front cargo bed frame (45) and the pair of rear cargo bed frames (46) are in contact is fixed by welding and integrated as a cargo bed part. If the front cargo frame (45) and the rear cargo frame (46) are also made of an aluminum frame together with the wheel frame (4), the weight can be reduced and the usability is improved.

Since the carrier frame is flat and is higher than the front wheel (7), a metal bearing support pipe (44) is provided and the gear holding plate (16a) of the gear portion (16) is elongated.

FIG. 42 is a plan view of the hand cart (1D), and FIG. 43 is a bottom view of the hand cart (1D). From these figures, the structure of the loading frame can be understood. Metal side plates (45c) are arranged on the inner sides of both ends of the front plate (45a) and the rear plate (45b) having the same length and are fixed by welding.

A pair of metal rotating shaft plates (45d) are provided with a bearing support pipe (44) and a loading platform side rotating bearing (15), and are arranged in accordance with positions outside the wheel side rotating bearing (10). Yes. And the part which contact | connects a front part plate (45a) and a rear part plate (45b) is fixed by welding.

The metal gear plate (45e) is disposed at the center of the cargo bed frame, and the portions in contact with the front plate (45a) and the rear plate (45b) are fixed by welding. And the gear part (16) is attached by welding according to the position of the gear position adjusting device (13).

44 is a front view of the hand cart (1D), and FIG. 55 is a rear view of the hand cart (1D). This type of transport vehicle does not need to tilt the loading platform so much forward, but if the height of the bearing support pipe (44) is increased or the diameter of the front wheel (7) is decreased, the forward tilting capability is enhanced.

There are many unicycles with flat cargo beds for transporting two or three 20kg containers on the market, but the maneuverability may become unstable due to the longer cargo platform. Carrying three containers with crops is quite hard work. However, if it is a hand cart (1D) like Example 5, it can be said that it is more convenient than the conventional one because it can travel stably and can carry easily.

The above is the description of the handcart from Example 1 to Example 5.

Recently, electrically assisted unicycles and powered unicycles have been released. This is because, in addition to the social background of aging, recent improvements in technology have made the power part more compact and can be installed even on unicycles. However, even though the power part has become compact, the weight of the unicycle body can be as high as 30 kg to 40 kg. As a result, the weight of the carrier himself / herself increases and operation becomes difficult on rough terrain.

According to the present invention, it can be said that the vehicle body is suitable for a powered transport vehicle because it has a small turn like a unicycle, but does not bear weight and is easy to operate. Further, if the hand cart (1) of the first embodiment is taken as an example, a space in which the power unit can be attached is provided in the middle of the lower part of the main pipe frame (4a). Therefore, the present invention has a capacity and a vehicle body that can be applied to a powered transport vehicle that will be increasingly needed in the future.

Finally, I would like to describe the use of the present invention in disaster areas. For example, in a disaster area, it is necessary to transport earth and sand, sandbags, or relief supplies as soon as possible, but it is very difficult to carry heavy objects with conventional unicycle while the feet are bad, and it is also difficult to continue work . However, if it is a hand cart of the present invention, there is no weight burden, it is easy to cross the step, it is easy to turn in a narrow place, and the wheel can be freely used according to the situation, so even in an emergency Very useful.

As another example, in a situation where an injured person has to be transported in an emergency, it can be transported alone by using the hand cart (1D) of the fifth embodiment as long as the path is secured. Up to now, in order to carry an injured person, a stretcher or the like was used to support two people. However, ordinary households have few stretchers, and there are cases where a person who carries a person cannot be secured. If it is this hand cart (1D), the above-mentioned correspondence can be performed and its utility value is high.

It is a right view of the handcart of Example 1. It is a front view of the handcart of Example 1. It is a rear view of the hand cart of Example 1. It is a right view of the wheel frame part of the hand cart of Example 1. It is a top view of the wheel frame part of the hand cart of Example 1. It is a bottom view of the wheel frame of the hand cart of Example 1. It is a top view of the gear position adjustment apparatus of the hand cart of Example 1. It is a right view of the gear position adjustment apparatus of the hand cart of Example 1. It is a rear view of the gear position adjustment apparatus of the hand cart of Example 1. It is a front view of the gear position adjustment apparatus of the hand cart of Example 1. It is a right view of the carrier frame part except the bucket of the hand cart of Example 1. It is a top view of the loading platform frame part except the bucket of the hand cart of Example 1. It is a bottom view of the loading platform frame part except the bucket of the hand cart of Example 1. It is a right view of the gear part of the hand cart of Example 1. It is a rear view of the gear part of the hand cart of Example 1. It is a top view of the handcart of Example 1. It is a bottom view of the hand cart of Example 1. It is the (a) position of the gear when the bucket of the hand cart of Example 1 is horizontal, and (b) is a right side view of the vehicle body. (A) The position of a gear when the handcart of Example 1 inclines forward to the maximum, (b) It is a right view of a vehicle body. (A) The position of a gear when the handcart of Example 1 is fixing and maintaining, (b) It is a right view of a vehicle body. It is the (a) right view of the unicycle at the time of conveyance, (b) It is a front view. It is the (a) right view and (b) front view of the two-wheeled vehicle at the time of conveyance. It is (a) right view of a three-wheeled transport vehicle, (b) It is a front view. It is (a) right view of a four-wheel transport vehicle, (b) It is a front view. (A) Each of the hand carts of the first embodiment, (b) the unicycle, (c) the two-wheeled vehicle, (d) the three-wheeled vehicle, and (e) the four-wheeled vehicle travels on the laterally inclined ground having the same inclination. FIG. It is a right view when the hand cart of Example 1 is traveling only with the rear wheel. It is a right view of the state where the hand cart of Example 1 was equipped with a box. It is a top view in the state where the hand cart of Example 1 was equipped with a box. It is a rear view of the state where the hand cart of Example 1 was equipped with a box. It is a right view of the rear-wheel part of the handcart of Example 2. In order to make the device easier to understand, the rear wheel in front is removed. It is a rear view of the rear-wheel part of the handcart of Example 2. It is a rear view at the time of the hand cart of Example 2 driving | running | working a horizontal sloping ground. It is a right view when the handcart of Example 3 is fixed and maintained. It is a top view of the rear-wheel part of the handcart of Example 3. It is a rear view of the handcart of Example 3. It is a right view of the handcart of Example 4. It is a top view of the handcart of Example 4. It is a bottom view of the handcart of Example 4. It is a front view of the handcart of Example 4. It is a rear view of the handcart of Example 4. It is a right view of the state with which the hand cart of Example 5 has mounted three containers. It is a top view of the handcart of Example 5. It is a bottom view of the hand cart of Example 5. It is a front view of the handcart of Example 5. It is a rear view of the hand cart of Example 5.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Handcart 2 Bucket 3 Loading platform frame 3a Front loading platform horizontal plate 3b Rear loading platform horizontal plate 3c Loading platform horizontal pipe 4 Wheel frame 4a Main pipe frame 4b Front pipe frame 4c Front horizontal pipe 4d Rear horizontal pipe 5 Front wheel bearing 6 Front wheel axle 7 Front wheel 7a Front wheel tire 7b Front wheel 8 Rear wheel 8a Rear wheel tire 8b Rear wheel 9 Rear wheel axle 10 Wheel side rotation bearing 10a Wheel side rotation shaft hole 10b Rotation bearing fixing rod 11 Main axle tube support pipe 12 Sub axle Pipe support pipe 13 Gear position adjusting device 13a Long plate 13b Metal rod moving hole 13c Short plate 13d Metal rod 13e Metal rod stopper 13f Push spring 14 Rotating shaft 15 Loading platform side rotating bearing 15a Loading platform side rotating shaft hole 16 Gear portion 16a Gear holding plate 16b Gear 16c Gear fixed Parts 17 Stand 17a Stand reinforcement pipe 18 Handle 18a Handle upper portion 18b Handle lower portion 19 Cap 20 Operation lever device 21 Outer 21a Outer stopper 22 Inner wire 22a Nipple 23 Rear wheel axle tube 24 Box 25 Front axle tube support pipe 26 Rear axle tube support Pipe 27 Support pipe Horizontal pipe 28 Front axle tube bearing 29 Rear axle tube bearing 30 Rear wheel rotation shaft 31 Rear wheel rotation axle tube 32 Rear wheel rotation axle tube bearing 33 Pull spring 34 Upper spring hook ring 35 Lower spring hook ring 36 Rotating rear wheel axle 37 Rear wheel support pipe 38 Rear wheel bearing 39 Stand frame pipe 40 Stand frame lateral pipe 41 Bearing plate 42 Gear plate 43 Bucket support pipe 44 Bearing support pipe 45 Front Base frame 45a Front plate 45b Rear plate 45c Side plate 45d Rotating shaft plate 45e Gear plate 46 Rear cargo frame 1A Hand truck 1B Hand truck 8B Rear wheel 9B Rear wheel axle 1C Hand truck 2C Bucket 3C Car bed frame 1D Hand transport Car 17D stand

A bucket (2), a stand (17), a gear part (16), and an operating lever device (20) are attached to a cargo bed frame (3) with a handle (18). Then, the front with a loading platform side rotational bearing (15), the bottom of the bucket (2) a portion corresponding to the vicinity of the center of gravity of the body of the bucket when (2) is horizontal (the state of FIG. 18) of the bed frame (3) Install on the side plate (3a) . If the platform-side rotary bearing (15) is in that position, when the platform frame (3) is in a freely moving state, the stand (17), the gear portion (16), and the frame and handle (18) extending long in the rear, etc. Since the load carrier frame (3) tilts backward due to the weight of the vehicle body, the stand (17) is grounded and the vehicle body can be fixed and maintained regardless of whether or not there is a load. Moreover, as the bucket (2) and the center of gravity of the load move backward as the vehicle leans backward, it is convenient for fixing the vehicle body.

In the upper part of the gear (16b), even if the metal rod (13d) is in front of the metal rod moving hole (13b), there is provided a space where nothing is in contact. The gear holding plate (16a) and the gear (16b) are designed so that the space moves to the position of the metal rod (13d) just before the stand (17) contacts the ground. When the metal rod (13d) is disposed in the space, the loading frame (3) is in a freely moving state, and as a result, the loading frame (3) is tilted rearward and the stand (17) is grounded to fix the vehicle body. Can be maintained (see FIGS. 14 and 20).

As a third embodiment, a hand cart (1B) with one rear wheel (8B) will be described. Although the rear wheel (8) does not reach the two in the first embodiment, since the tire of the rear wheel (8B) is thickened , stable running is possible. Since the configuration other than the attachment of the single rear wheel (8B) is the same as that of the hand cart (1) of the first embodiment, the description thereof is omitted.

The left and right gear portions (16) move between the rear wheel (8B) and the long plate (13a) of the gear position adjusting device (13).

FIG. 36 is a right side view of the hand cart (1C) according to the fourth embodiment. A pair of metal stand frame pipes (39) are arranged at the same position on the left and right on a carrier frame (3C) integrated with a pair of metal handles (18), and are fixed by welding. In the middle of the stand frame pipe (39), a pair of metal stand frame horizontal pipes (40) are arranged at the same position on the left and right sides in accordance with the position of the bottom of the bucket (2C), and both ends of the stand frame pipe (40 39) and fixed by welding. Although it seems that the stand frame horizontal pipe (40) and the bucket (2C) are in contact with each other in the figure, this is not the case and, as will be described later, a bearing plate attached to the stand frame horizontal pipe (40). (41) is arranged at the bottom of the bucket (2C) to support the bucket (2C).

44 is a front view of the hand cart (1D), and FIG . 45 is a rear view of the hand cart (1D). This type of transport vehicle does not need to tilt the loading platform so much forward, but if the height of the bearing support pipe (44) is increased or the diameter of the front wheel (7) is decreased, the forward tilting capability is enhanced.

The gear position adjusting device (13) is configured such that a cylindrical metal rod (13d) attached thereto can be moved back and forth in the metal rod moving hole (13b) by the operation lever device (20) and the cable system. The metal frame (13d) and the gear (16b) of the gear portion (16) mesh with each other, whereby the cargo bed frame (3) can be fixed at an arbitrary position (see FIGS. 7, 8, and 18). In a state where the lever of the operating lever device (20) is released from the hand, the metal rod (13d) is moved forward by the pressing spring (13f) and meshes with the gear (16b) or the upper portion of the gear (16b). Or place it in the space part. On the other hand, when the lever is pulled, the metal rod (13d) moves rearward and is disengaged from the gear (16b), so that the gear (16b) and the cargo bed frame (3) are freely moved. By such an operation, the cargo bed frame (3) can be fixed or arranged at an arbitrary position. The gear position adjusting device (13) includes a front horizontal pipe (4c) and a rear horizontal pipe (which are installed at the rear part of the wheel frame (4) so that the above function can be performed with the rotating gear part (16). It is attached to the upper side of 4d). As means for fixing and releasing the rotating carrier frame (3) in this way, in the embodiment of the present invention, “operation lever device (20) and cable system” and “gear (16b) and gear position adjustment device (13)”. However, the present invention is not limited to these configurations, and can provide the same function as the embodiment as long as it is equipped with a “coupling device equipped with a lock device and a device for operating it”. Therefore, the present invention can be configured.

A bucket (2), a stand (17), a gear part (16), and an operating lever device (20) are attached to a cargo bed frame (3) with a handle (18). Then, the front-side rotary bearing (15) is located at the lower part of the load-carrying frame (3) at the portion corresponding to the vicinity of the center of gravity of the bucket (2) main body when the bucket (2) is horizontal (state in FIG. 18). Install on the side plate (3a). If the platform-side rotary bearing (15) is in that position, when the platform frame (3) is in a freely moving state, the stand (17), the gear portion (16), and the frame and handle (18) extending long in the rear, etc. Since the load carrier frame (3) tilts backward due to the weight of the vehicle body, the stand (17) is grounded and the vehicle body can be fixed and maintained regardless of whether or not there is a load. Moreover, as the bucket (2) and the center of gravity of the load move backward as the vehicle leans backward, it is convenient for fixing the vehicle body.
Although the embodiments of the present invention are set the mounting position of the loading platform side rotational bearing (15) Thus, in a state where cargo bed frame that rotates to move freely, the side more so that a load is applied are Installing stand taken If a rotary bearing on the loading platform side is installed in the vehicle, the same function as in the embodiment can be achieved, and the present invention for solving the problems can be configured.

Claims (2)

(A) A front wheel (7), a rear wheel (8), a gear position adjusting device (13), and a wheel side rotary bearing (10) are attached to the wheel frame (4).
(B) A handle (18), a bucket (2), a stand (17), a gear part (16), and an operation lever device (20) are attached to the loading frame (3). And the loading platform side rotation bearing (15) is installed in the lower part of the loading platform frame (3) in the portion corresponding to the vicinity of the center of gravity of the bucket (2) main body when the bucket (2) is horizontal.
(C) The loading platform frame (3) is disposed on the wheel frame (4), and after the shaft holes of the wheel-side rotating bearing (10) and the loading platform-side rotating bearing (15) are aligned, the rotating shaft (14) Join with.
(D) The cable system is connected from the operation lever device (20) to the gear position adjusting device (13).
(E) The metal rod (13d) of the gear position adjusting device (13) can be moved back and forth in the metal rod moving hole (13b) by the operation of the operation lever device (20).
(F) The gear (16b) of the gear part (16) is molded so as to mesh with each other when the metal rod (13d) moves to the front. However, immediately before the stand (17) is grounded, a space is provided above the gear (16b) so that the metal rod (13d) does not mesh with each other even if the metal rod (13d) moves to the forefront.
A hand cart constructed as described above. A hand cart having a structure similar to that of the hand cart of claim 1 and having a flat carrier frame instead of the bucket (2).

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