JP2008062884A - Handcart - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a handcart enabling the effective reduction in the noise generated during the traveling and extremely simplified in the structure and the manufacturing step. <P>SOLUTION: This handcart comprises a synthetic resin base plate, wheels attached to the lower surface of the base plate, and a hand-push handle vertically installed on the upper surface of the base plate. The wheels are attached to an axle support part formed integrally with the base plate. The handcart adopts the synthetic resin base plate to suppress the vibration noise generated by the vibration of the base plate during the traveling. Since the wheels are attached directly to the axle support part, the noise resulting from the casters can be eliminated. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a hand cart used for carrying and carrying a load. More specifically, the present invention relates to a hand cart that can be suitably used by reducing noise generated during transportation.

  Currently used handcarts have wheels attached to the lower surface of a metal or resin base plate (loading platform) with a structure called a caster, and a hand handle for pushing the cart on the upper surface of the base plate for running. What you have is common.

  Metal base plates include steel plates, stainless steel plates, and aluminum plates. Resin base plates include those molded from hard synthetic resins such as polypropylene, ABS resin, and polyester resin. . In general, a metal base plate is superior in durability, and a resin base plate is excellent in lightness, but a resin base plate is superior in terms of quietness during running of a handcart. . This is because, depending on the road surface on which the hand cart travels, the metal base plate generates an unpleasant vibration sound peculiar to the metal member from the base plate when the entire hand cart is vibrated by the unevenness of the road surface.

  Conventionally, there are two types of casters for attaching the wheels to the base plate, so-called “universal casters” and “fixed casters”. The universal caster can freely change the rolling direction of the wheel with respect to the carriage. The caster base is fixed to the base plate, the frame is rotatably supported by the caster base, and the shaft is supported by the frame. It consists of wheels to be supported. Multiple swivel casters arranged on the base plate can rotate freely with respect to the base plate, so that the direction of each wheel can be easily changed to the direction of travel by simply pushing the handcart in the desired direction. And excellent turning performance can be obtained. On the other hand, the fixed caster is such that the rolling direction of the wheel relative to the base plate is fixed in one direction, and the caster base fixed to the base plate functions as a frame that directly supports the wheel. Since the fixed caster does not have the pivotability like the above-mentioned free caster, the pivotability is slightly inferior, but the straight traveling performance is improved. In addition, the fixed caster has a simple structure and superior strength compared to the free caster, and is therefore suitable for a hand cart that carries heavy loads.

  When wheels are attached to the base plate using these casters, each member such as between the base plate and the caster base, between the caster base and the frame, and between the frame and the wheel due to impact / vibration on the road surface unevenness when the handcart is running. An abnormal noise was generated from the connecting part. In addition, casters are often made of metal members so that sufficient strength against load is exerted. When the casters are made of metal in this way, there is no harshness peculiar to metal members. Vibration sound was generated.

  Furthermore, in particular, in the handcart equipped with the above-mentioned universal casters, the metal caster base and the frame are in direct contact with each other. Therefore, when the frame is rotated to change the direction of the wheels, the frame and the caster base are rubbed. As a result, unpleasant sliding sound is generated due to sliding between the metallic members.

  These annoying noises such as abnormal noises, vibration noises, and sliding noises that occur when running a handcart are especially problematic when using a handcart in an environment where quietness is required such as in offices, hospitals, and densely populated houses. Conventionally, attempts have been made to reduce these noises by improving the configuration of casters.

Specifically, Patent Document 1 discloses a coated cushion type caster in which a coated cushion is provided on an upper part of a caster and absorbs shocks, vibrations, abnormal sounds, and the like with respect to road surface unevenness. Further, Patent Document 2 discloses a universal caster that can be suitably used by coating a resin on the caster body and the frame without generating a metallic sound due to sliding between metal members.
JP-A-11-59110. JP 2001-294007 A.

  The covering cushion type caster and the universal caster according to Patent Documents 1 and 2 effectively reduce noise generated from a hand cart, particularly noise caused by a metal member constituting the caster. However, in the coated cushion caster according to Patent Document 1, many parts are required to incorporate and mount the cushion inside the caster, and with the free caster according to Patent Document 2, the resin powder is kept in a fluid state. In addition, a resin coating process is required in which a caster body or a frame, which is a preheated article, is immersed in the fluidized bed.

  Therefore, the main object of the present invention is to provide a hand cart that can effectively reduce annoying noise generated during traveling and that has an extremely simple structure and manufacturing process.

  In order to solve the above problems, the present invention comprises a base plate made of synthetic resin, a plurality of wheels attached to the lower surface of the base plate, and a hand handle erected on the upper surface of the base plate, A hand cart is provided in which the wheel is pivotally attached to a wheel bearing unit formed integrally with the base plate.

  First, by employing a base plate made of synthetic resin, it is possible to eliminate the generation of vibration noise peculiar to metal members that occurs when a metal base plate is used. Next, since the base plate is made of synthetic resin, the wheel bearing portion for attaching the wheel to the base plate can be formed integrally with the base plate, and the wheel is directly attached to the wheel bearing portion. Thus, the caster that has been conventionally used for attaching the wheel to the base plate is made unnecessary. Thus, it became possible to eliminate the noise resulting from the member which comprises a caster by setting it as the structure which abbreviate | omitted the caster itself.

  Then, a front wheel consisting of a set of wheels is provided at the front end of the carriage in the direction of travel of the hand cart, and a rear wheel consisting of a set of wheels is provided at a predetermined position near the front wheel from the rear end of the direction of travel of the hand cart on the base plate. Therefore, it was decided to improve the turning operability of the hand cart. That is, by arranging the rear wheel close to the front wheel, it is possible to reduce the turning radius when turning and to impart excellent turning operability to the hand cart.

  The handwheel handle erected on the upper surface of the base plate of the handcart is rotated backward with respect to the direction of travel of the handcart with the pivotal joint with the base plate as a fulcrum, and is inverted from the upper surface side to the lower surface side of the base plate It is good also as a structure which can fall down to the lower surface of a baseplate. Alternatively, the hand handle can be configured to be able to fall to the upper surface of the base plate by rotating the hand handle forward in the direction of travel of the hand cart with the pivotal portion of the base plate as a fulcrum.

  Since the hand handle is configured to be able to fall to the lower surface or the upper surface of the base plate, when the hand cart is not used, the hand handle can be stored in a tilted state. Space saving is achieved.

  In particular, when the hand handle is laid down on the bottom surface of the base plate, another hand cart can be stacked and stored on the top surface of the base plate, and further space saving can be achieved. Further, if a load is loaded on the upper surface of the base plate with the hand handle lying on the lower surface of the base plate, it can be used as a flat cart without the hand handle.

  The base plate may be provided with a storage portion for storing and fixing the fallen hand push handle.

  By providing a storage part on the base plate and allowing the fallen hand handle to be stored and fixed in the lower or upper side storage part of the base plate, the fallen hand handle will not protrude on the lower or upper surface of the base plate. Further space saving during storage and storage can be achieved.

  Furthermore, when the hand handle is overlaid on the lower surface of the base plate and is housed and fixed in the housing portion, as described above, the traveling performance when used as a flat carriage with the hand handle in the overlaid state can be improved. it can. In other words, when it is lying down with the handwheel protruding on the bottom surface of the base plate, when using it as a flat carriage, there is a risk that the handwheel handle protruding on the road convexity or obstacle will be caught. Since the handwheel handle is housed and fixed in the housing portion, the fallen handwheel handle does not protrude from the lower surface of the base plate, so that the traveling of the carriage is not hindered by the road surface protrusions and obstacles. In addition, even when the hand handle is overlaid on the top surface of the base plate and stored and fixed in the storage section, the hand handle that has been laid down will no longer get in the way. It can be used as a car.

  By using the hand cart according to the present invention, noise generated during traveling can be reduced. In addition, the hand cart according to the present invention has a very simple configuration, so that the manufacturing cost can be reduced.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments for carrying out the invention will be described with reference to the drawings. In addition, embodiment described below shows an example of typical embodiment of this invention, and, thereby, the range of this invention is not interpreted narrowly.

  FIG. 1 is a view showing a first embodiment of the hand cart according to the present invention, in which (A) is a side view and (B) is a rear view.

  In FIG. 1, a hand cart indicated by a symbol A is erected on a base plate 1, front wheels 21 and 21, rear wheels 22 and 22 disposed on the lower surface of the base plate 1, and an upper surface of the base plate 1. And a hand handle 3. The front wheels 21, 21 and the rear wheels 22, 22 are respectively attached to axle bearing portions 11, 11, 12, 12 integrally formed on the lower surface of the base plate 1, and the hand handle 3 is a hand cart of the base plate 1. It is pivotally attached to a pivot part 4 formed integrally with the rear end of the traveling direction Y. The hand push handle 3 is provided with handle side holes 31 for inserting a pin 42 described later.

  The base plate 1 is formed of a synthetic resin, and can be used without limitation as long as it is a synthetic resin having sufficient durability and light weight as a base plate, such as polypropylene, ABS resin, and polyester resin. is there. By adopting a synthetic resin base plate instead of a metal base plate, the metal base plate is devised so as not to generate a vibration sound peculiar to metal members generated by vibration during traveling.

  The hand handle 3 may be made of metal or resin, and is preferably made of resin in order to reduce noise during traveling, but may be made of metal when the strength is insufficient. In the case of resin, polypropylene, ABS resin, polyester resin, and the like are conceivable as in the case of the base plate 1, and in the case of metal, steel, stainless steel, aluminum, and the like are conceivable.

  Next, an operation when the hand handle 3 is laid down on the base plate 1 will be described with reference to FIGS. 1, 2, and 3.

In the hand cart A, as described above, the hand handle 3 is pivotally attached to the pivot portion 4 formed integrally with the rear end of the hand cart direction Y (see FIG. 1) of the base plate 1 (see FIG. 1). ), Which is pivotable in the direction of arrow S ₁ (see FIG. 1) with the pivoting portion 4 as a fulcrum, and can be reversed from the upper surface side to the lower surface side of the base plate 1. Hand handle 3 which is inverted on the lower surface side of the base plate 1 can be further rotated in the arrow S ₂ direction to lodging on the lower surface of the base plate 1.

  FIG. 2 is a bottom view (A) and a side view (B) showing the hand cart A with the hand handle 3 lying on the bottom surface of the base plate 1.

  At the site where the handwheel handle 3 that has been laid down contacts the lower surface of the base plate 1, a receiving portion 5 for receiving the hand handle 3 is provided by recessing the surface of the base plate 1. The depth of the depression on the surface of the base plate 1 can be appropriately designed according to the thickness of the hand handle 3 so that the entire hand handle 3 is accommodated in the accommodating portion 5.

  By adopting a configuration in which the handwheel 3 that has been laid down in this way is housed in the housing portion 5, the space for storing and storing the handcart A can be reduced, and the handcart A can be stacked and stored. (See the dotted line in FIG. 2B). Further, if a load is loaded on the upper surface of the base plate 1 in a state where the hand handle 3 is housed in the housing part 5, the hand cart A can be used as a flat car without a hand handle.

  FIG. 3 is an enlarged view of the pivoting portion 4 of the hand cart A, in which (A) is a bottom view, (B) is a rear view, and (C) is a side view.

The hand push handle 3 is pivotally attached to the pivot portion 4 by a pivot fitting 41 (see FIG. 3A), and is configured to be rotatable about the pivot fitting 41. When the hand cart A is used, the hand handle 3 can be locked by the pin 42 so as not to rotate (see FIG. 3B). When the hand handle 3 is laid down, the pin 42 is removed to release the lock, and the hand handle 3 is rotated in the direction of the arrow S ₁ with the pivot fitting 41 as an axis, and reversed from the upper surface side to the lower surface side of the base plate 1. after, further rotated in the arrow S ₂ direction, for accommodating the accommodating section 5 (FIG. 3 (C) and FIG. 1, see FIG. 2).

  FIG. 4 is an enlarged view (bottom perspective view) of the handle fixing portion 51 for fixing the hand pushing handle 3 accommodated in the accommodating portion 5.

  When the hand handle 3 is housed in the housing portion 5, as described above, the pin 42 of the pivoting portion 4 is first removed to unlock the hand handle 3 (see FIG. 3B). At this time, it is possible to fix the hand handle 3 accommodated in the accommodating portion 5 to the handle fixing portion 51 (see FIGS. 4 and 2A) by using the pin 42 removed.

  The handle fixing portion 51 includes concave portions 511 and 511 formed by partially denting the lower surface of the base plate 1, and fixing walls 512 and 512 provided between the concave portions 511 and 511 and the accommodating portion 5. The fixed walls 512 and 512 are provided with fixed wall side holes 513 and 513 through which the pin 42 can be inserted.

  Here, handle side holes 31 and 31 for inserting the pin 42 are provided on the hand handle 3 side (see FIG. 1), and when the hand handle 3 is accommodated in the accommodating portion 5, the handle side hole 31 is provided. , 31 and fixed wall side holes 513, 513 are arranged in a straight line. Therefore, after the hand handle 3 is accommodated in the accommodating portion 5, the pin 42 is inserted from one of the recesses 511, 511 through the fixed wall side hole 513, the handle side hole 31, and the fixed wall side hole 513 in this order. (See the arrow in FIG. 4), the hand handle 3 can be fixed to the accommodating portion 5.

  Next, a method for attaching the front wheels 21 and 21 and the rear wheels 22 and 22 will be described with reference to FIG. FIG. 5 shows a part of the cut surface obtained by cutting the hand cart A in section X in FIG.

  The front wheels 21 and 21 are attached to an axle bearing portion 11 (see also FIG. 1) formed integrally with the base plate 1 by an axle 211 (see FIG. 2A). The rear wheels 22 and 22 have the same configuration although illustration and description are omitted.

  By directly attaching the front wheels 21 and 21 to the wheel bearing portions 11 and 11, the casters conventionally used for attaching the wheels to the base plate are made unnecessary. In this way, by adopting a configuration in which the casters are omitted, it is possible to eliminate the generation of abnormal noise generated from the connecting portions of each member such as between the base plate and the caster base, between the caster base and the frame, and between the frame and the wheel during traveling. It becomes. Further, it is possible to eliminate vibration noise peculiar to metallic members caused by casters and sliding noise generated by sliding between metallic members.

  The axle 211 may be made of metal or resin, and is preferably made of resin in order to reduce noise during traveling, but may be made of metal when the strength is insufficient. Further, as described above, the axle bearing portion 11 is integrally formed with the base plate 1 and is made of the same synthetic resin as that of the base plate 1. A reinforcing member 111 made of steel may be attached to the axle bearing portion 11 (see FIG. 2B). The metal axle 211 and the reinforcing member 111 may be made of steel, stainless steel, aluminum, or the like, but in this case, noise unique to the metal member is generated due to the axle 211 and the reinforcing member 111. Be careful about what you get.

  As with the base plate 1, the front wheels 21 and 21 can be formed of polypropylene, ABS resin, polyester resin, or the like, and are limited to these as long as they are synthetic resins having sufficient durability and light weight. It is possible to adopt. It is desirable to avoid a metal wheel in order to reduce noise caused by the metal member. In addition, the tire portions of the wheels 21 and 21 can be molded from natural rubber, butadiene rubber, urethane rubber, etc., and have moderate cushioning and durability to absorb impacts, vibrations, abnormal sounds, etc. on road surface irregularities. As long as the resin has both, it is possible to adopt without being limited thereto. Of these, urethane wheels that are excellent in noise reduction are particularly preferred. The wheel and the tire can be integrally formed using the same material.

  As described above, the front wheels 21 and 21 and the rear wheels 22 and 22 are directly attached to the axle bearings 11 and 11 or 12 and 12, and the rotation direction is fixed. Even without moving the direction of travel, it exhibits excellent straightness. Further, unlike a hand cart equipped with a conventional free caster, the wheel does not accidentally fall into a groove on the road surface or a clearance of an elevator during traveling. However, on the other hand, since the front wheels 21 and 21 and the rear wheels 22 and 22 do not have a turnability with respect to the base plate 1, the turning operability may be insufficient. In order to solve this, in the hand cart A, as shown in FIG. 1, the rear wheels 22, 22 are provided near the front wheels 21, 21, so that the turning radius of the hand cart A is reduced and the turning performance is ensured. It has been devised.

More specifically, in the hand cart A, the rear wheels 22 and 22 have a length L of 100 in the traveling direction Y of the hand cart A of the base plate 1 (see the arrow in FIG. 1). The distance L ₁ from the front end in the traveling direction Y and the distance L ₂ to the rear end are arranged at 60:40. Thereby, compared with the case where the rear wheels 22 and 22 are disposed at the rear end of the traveling direction Y of the base plate 1 (when the distance between the rear wheels 22 and 22 and the front wheels 21 and 21 is the maximum (L)), The turning radius of the handcart A can be reduced to 60%. Therefore, the handcart A can be turned around and exhibits excellent turning operability.

Here, the position to dispose the rear wheels 22, 22 is not limited to the position shown in FIG. 1, it can be designed by changing the appropriate distance L ₁ and L _2. In this case, as the distance L ₁ is decreased and the distance L ₂ is increased (the distance between the rear wheels 22 and 22 and the front wheels 21 and 21 is reduced), the radius of rotation of the handcart A is decreased and the turning operability is improved. be able to. However, at the same time, the front wheels 21 and 21 and the rear wheels 22 and 22 cannot sufficiently support the load applied to the base plate 1, so that the base plate 1 becomes unstable and the handcart A is moved backward Z in the direction of travel (arrow in FIG. 1). (See)). Conversely, if the distance L ₁ is increased and the distance L ₂ is decreased (the distance between the rear wheels 22 and 22 and the front wheels 21 and 21 is too large), the stability of the base plate 1 with respect to the load increases. The turning operability becomes insufficient. Therefore, when designing the distances L ₁ and L ₂ , it is necessary to pay attention to the balance between the stability of the handcart A with respect to the load and the turning operability. As described above, the distance L ₁ and the distance L ₂ are set as follows. In the case of 60:40, it is possible to maximize the turning operability while maintaining stability.

  Conventionally, when a handcart is turned in a narrow space, an operation is performed in which the front plate is lifted with the rear wheel as a fulcrum and the base plate is tilted, and the handcart is turned while only the rear wheel is in contact with the road surface. It is. If the front wheel of the handcart is lifted and the handcart is turned with only the rear wheels touching the road surface, the radius of rotation of the handcart will be smaller than if the front wheel and the rear wheels are both grounded, This is because it is possible to swivel in a narrow space.

  In the handcart A, the rear wheels 22, 22 are provided closer to the front wheels 21, 21, so that the base plate 1 is inclined backward Z in the traveling direction (see the arrow in FIG. 1) with the rear wheels 22, 22 as fulcrums. Thus, the operation of lifting the front wheels 21 and 21 can be performed more easily.

More specifically, when lifting the front wheels 21, 21, a force in the direction of arrow S ₁ (see FIG. 1) is applied to the hand handle 3 so that the base plate 1 is attached to the rear wheel 22, A force that inclines in the Z direction with 22 as a fulcrum is applied. At this time, the larger the ratio (L ₂ / L ₁ ) of the distance L _{2 to} the distance L ₁ (the rear wheels 22, 22 are the front wheels 21, The closer to 21), the smaller the force applied to the pivot part 4 is. In the hand cart A, the rear wheels 22 and 22 are provided closer to the front wheels 21 and 21, and the ratio of the distance L ₂ to the distance L ₁ (L ₂ / L ₁ ) is designed to be large. _The front wheels 21 and 21 can be lifted by applying a little force in _one direction, and the operation of turning only the rear wheels 22 and 22 in contact with the road surface can be performed more easily and quickly. is there. In the hand truck A, it has pivoted the hand wheel 3 in the traveling direction rearmost end of the base plate 1 is also the ratio with respect to the distance L ₁ of the distance _{L 2 (L 2 / L 1} ) a was increased, the turning operation Has the effect of facilitating.

  FIG. 6 is a bottom view of the second embodiment of the hand cart according to the present invention.

In the hand cart shown in FIG. 6, the distance W _B between the rear wheels 22 and 22 is smaller than the distance W _A between the rear wheels 22 and 22 of the hand cart A (see FIG. 2A). Thus, it is designed to be small (the distance between the rear wheels 22, 22 is close).

By thus having a reduced distance W _B between the rear wheels 22 and 22, lift the front wheels 21, 21, when only the rear wheels 22, 22 to try to pivot in a state of being contact with the road surface, the rotation radius Can be made smaller. Therefore, the hand cart B is capable of further turning compared to the hand cart A, and has excellent turning operability.

In this case, the distance W and too much smaller (near the distance between the rear wheels 22, 22) _B, the load applied to the base plate 1 the front wheels 21, 21, can be the rear wheels 22, 22 are sufficiently supported since the base plate 1 becomes unstable without, in the design of the distance W _B, it is necessary to pay attention to the balance between the stability and the turning operation with respect to load of the hand truck B.

  FIG. 7 is a top perspective view of a third embodiment of the hand cart according to the present invention.

  In FIG. 7, the hand cart represented by the symbol C is configured such that the hand handle 3 is laid on the upper surface instead of the lower surface of the base plate 1. That is, in the hand cart C, the hand handle 3 is laid down in the direction of arrow S in the figure and is housed in the housing portion 5 provided on the upper surface of the base plate 1.

  The hand cart C is the same as the hand cart A in the effect of saving space during storage and enabling the use as a flat cart with the hand handle 3 lying down. It is superior to the handcart A in that the operation of falling on the base plate 1 is easier. That is, in the hand cart A, when the hand handle 3 is inverted to the lower surface of the base plate 1 and falls, it is necessary to reverse the hand handle 3 in a state where the base plate 1 is temporarily lifted and held (FIG. 1). (Refer to FIG. 2) Since the hand cart C is configured such that the hand handle 3 is laid down on the upper surface of the base plate 1, it is not necessary to lift and hold the base plate 1.

  FIG. 8 is an enlarged view of the pivoting portion 4 of the hand cart C, where (A) is a top view, (B) is a rear view, and (C) is a side view.

    The hand push handle 3 is pivotally attached to the pivot portion 4 by a pivot fitting 41 (see FIG. 8A), and is configured to be rotatable about the pivot fitting 41. When the hand cart A is used, the hand handle 3 can be locked by the pin 42 so as not to rotate (see FIG. 8B). When the hand handle 3 is tilted, the pin 42 is removed to release the lock, and the hand handle 3 is pivoted in the direction of arrow S about the pivot fitting 41 to tilt the hand handle 3 to the upper surface of the base plate 1. (See FIGS. 8C and 7). It should be noted that, in this drawing, the positional relationship between the pivot fitting 41 and the pin 42 is reversed upside down as compared with the pivot portion 4 of the hand cart A shown in FIG.

  FIGS. 9A and 9B are views showing a concept of a method for accommodating the hand handle 3 in the accommodating portion 5, wherein FIG. 9A is a side view and FIG. 9B is a bottom view. In this figure, although the accommodating part 5 is provided in the lower surface of the baseplate 1, even if it is a case where it provides in the upper surface, it is possible to employ | adopt the method demonstrated below similarly.

In the hand cart shown in FIG. 9, when the hand handle 3 is housed in the housing portion 5, the hand handle 3 is first rotated in the direction of arrow S ₁ to a position parallel to the base plate 1. (See FIG. 9A). The storage part 5 of the hand cart D is not in the shape of a “U” like the hand cart A (see FIG. 2A), but is provided in two opposing straight lines (FIG. 9B). (See FIG. 9 (A) and FIG. 9 (B)). The push handle 3 rotated to a position parallel to the base plate 1 can be accommodated by sliding in the arrow T direction. ).

  Here, in the hand cart A (see FIG. 1), when the load is loaded on the base plate 1, the base plate 1 cannot be lifted and held, so the hand handle 3 is placed on the lower surface of the base plate 1. I can't surrender. Further, also in the hand cart C (see FIG. 7), when a load is loaded on the base plate 1, the hand handle 3 cannot fall on the upper surface of the base plate 1 because the load becomes an obstacle. However, in the hand cart D, as described above, the hand handle 3 is rotated to a position parallel to the base plate 1 and then slid into the housing portion 5 to be housed. Even if the load is still loaded, the hand handle 3 can be accommodated in the accommodating portion 5.

  FIG. 10 is a bottom perspective view showing a fifth embodiment of the hand cart according to the present invention.

  In the hand cart represented by E in FIG. 10, the lower surface side of the base plate 1 is formed in a lattice shape, and the synthetic resin used for the base plate 1 is within a range where the strength of the base plate 1 is sufficiently maintained. The device has been devised to reduce the amount of light and reduce the weight.

  In addition, a part of the surface of the base plate 1 having a lattice shape is cut out at a portion where the fallen hand push handle 3 abuts to form a handle fixing portion 51. The handle fixing portion 51 is formed with a width slightly narrower than the thickness of the hand handle 3 and is formed by notching the surface of the base plate 1, so that the fallen hand handle 3 can be formed on the basis of the elasticity of the synthetic resin. It is the structure which can be made to fit and hold | maintain. Therefore, in the hand cart E, it is possible to fix the fallen hand handle 3 more easily than the hand cart A (see FIG. 4).

  The handcart according to the present invention is used for transporting various loads, such as on-site use in factories, etc., and on-vehicle use used for loading and unloading by loading on trucks and the like. Can do. In particular, it is suitable for use in environments where quietness is required such as offices, hospitals, and densely populated houses due to reduced noise generation during travel.

It is a figure which shows 1st embodiment (handcart A) of the handcart which concerns on this invention, (A) is a side view, (B) is a rear view. It is a figure which shows the handcart A of the state which laid down the handwheel handle 3, (A) is a bottom view, (B) is a side view. It is an enlarged view of the pivot part 4 of the handcart A, (A) is a bottom view, (B) is a rear view, and (C) is a side view. It is an enlarged view (bottom perspective view) of the handle fixing part 51 of the handcart A. It is sectional drawing which shows the attachment method of a wheel. It is a bottom view of a second embodiment (handcart B) of the hand truck according to the present invention. It is a top perspective view showing a third embodiment (handcart C) of the handcart according to the present invention. It is an enlarged view of the pivot part 4 of the handcart C, (A) is a bottom view, (B) is a rear view, and (C) is a side view. It is a figure which shows one concept of the method of accommodating the handwheel 3 in the accommodating part 5, (A) is a side view, (B) is a bottom view. It is a bottom perspective view showing a fifth embodiment (handcart E) of the hand cart according to the present invention.

Explanation of symbols

A handcart according to the first embodiment of the present invention
B Handcart according to the second embodiment of the present invention
C handcart according to the third embodiment of the present invention
D Wheelbarrow according to the fourth embodiment of the present invention
E Handwheel 1 according to the fifth embodiment of the present invention 1 Base plate 11, 12 Axle bearing portion 21 Front wheel 22 Rear wheel 3 Hand push handle 4 Pivoting portion 41 Pivoting bracket 42 Pin 5 Housing portion 51 Handle fixing portion

Claims (5)

A base plate made of synthetic resin, a plurality of wheels attached to the lower surface of the base plate, and a hand handle erected on the upper surface of the base plate,
A hand cart in which the wheel is pivotally attached to a wheel bearing portion formed integrally with the base plate. A front wheel consisting of a set of the wheels is provided at the front end of the carriage in the direction of travel of the hand cart,
2. The hand cart according to claim 1, wherein a rear wheel comprising a set of the wheels is provided at a predetermined position closer to the front wheel than the rear end in the direction of the base plate to improve turning operability. The hand handle is rotated rearward in the direction of travel of the hand cart with the pivoting portion of the hand handle and the base plate as a fulcrum, and is inverted from the upper surface side to the lower surface side of the base plate. The handcart according to claim 1 or 2, wherein the handcart is attached to the lower surface so as to be able to fall down. 2. The hand handle is attached to the upper surface of the base plate so as to be able to fall down by rotating the hand handle forward in the direction of travel of the hand cart with the pivoting portion of the hand handle and the base plate as a fulcrum. A hand cart as described in 2. 5. The hand cart according to claim 3, wherein the base plate is provided with a housing portion for housing and fixing the handwheel handle that is lying down.

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