JP2019073118A - Handcart - Google Patents

Abstract

To provide a handcart that can easily move forward by using foot force at a step.SOLUTION: An attachment portion 6 is set at a lower portion of a vehicle body 2 provided with a front wheel 3 and a rear wheel 4. A jack lever 10 is attached to the attachment portion 6 to be rotatable in a vertical surface. A grounding portion 11 is set at an intermediate portion of the jack lever 10. A grounding wheel 14 is attached to the grounding portion 11. A biasing device 20 configured to apply turning force around the attachment portion 6 to the jack lever 10 is set at the lower portion of the vehicle body 2. An operation portion 15 is set at a rear end of the jack lever 10. When the operation portion 15 is further pressed downward by foot force in a state where the grounding wheel 14 is grounded, the vehicle body 2 is lifted up to float the front wheel 3 and the rear wheel 4. The grounding portion 11 is set such that a front end 14f of the grounding wheel 14 is located rearward of a lowermost end 4b of the rear wheel 4 in a state where the front wheel 3 and the rear wheel 4 are lifted up by the jack lever 10.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a handcart having front and rear wheels.

  Conventionally, various handcarts capable of riding over a step have been proposed. For example, in the handcart described in Patent Document 1, a jack lever is provided on the lower surface of the vehicle body supported by the front and rear wheels. The jack lever has a side surface shape in which an intermediate portion in the front and rear direction is bent, and is rotatably mounted in a vertical plane to a mounting portion set on the lower surface of the vehicle body. The jack lever extends rearward from the mounting portion, and an intermediate bending portion thereof is set as a grounding portion. An operation unit (pedal) is set at the tip of the jack lever. A grounding wheel is attached to the grounding portion. The length from the mounting portion to the ground portion is set longer than the height from the road surface to the mounting portion.

  The user of the handcart described in Patent Document 1 grips the handle portion provided at the rear of the upper surface of the vehicle body, and moves the handcart so as to move, for example, from the lower surface forming the step to the upper surface. Here, in the step, the surface connecting the lower surface and the upper surface is called a step surface. In this case, the user steps on the operation part of the jack lever when the front wheel hits the step surface and the handcart stops. As a result, the jack lever rotates at the mounting portion, and the ground contact wheel contacts the lower surface. Furthermore, the user puts weight on the operation unit. As a result, the ground contact wheel rolls on the lower surface, the ground contact portion advances below the attachment portion, and the jack lever is pushed to the rear of the vehicle body. At this time, the front of the vehicle body is lifted with the forward movement of the ground contact wheel and the ground contact portion, and the front wheel rises from the lower surface. In this state, the user can make the raised front wheel ride on the upper stage by pushing the handcart forward.

JP, 2016-22836, A

  However, in the handcart described in Patent Document 1, the rear wheel can not be lifted from the lower surface even if the jack lever is operated while the front wheel is on the upper surface of the step. Therefore, the user needs to lift the rear wheel on the upper stage surface by lifting the steering wheel by hand when the rear wheel hits the step surface after having the front wheel ride on the upper stage surface. Therefore, depending on the strength of the user, it is difficult to move the handcart so as to get on the upper level surface from the lower level surface with an upward level difference.

  An object of the present invention is to provide a handcart that can be advanced more easily by utilizing foot force at a step.

  (1) The handcart according to the present invention has a vehicle body provided with front wheels and rear wheels, and a bent side shape, and is rotatably mounted in a vertical plane to a mounting portion set in the vehicle body, from the mounting portion There is a grounding portion at the jack lever extending backward, a grounding portion set at the middle of the jack lever, a grounding wheel disposed at the grounding portion, an operation portion set at the rear end of the jack lever, and the jack lever The jack lever is rotated against the rotational force given by the biasing device when the operating portion is depressed, and the operating lever is further moved in a state where the ground wheel is in contact with the ground. Is pushed down to lift up the vehicle body to raise the front and rear wheels, and with the front and rear wheels raised, the grounding portion is set so that the front end of the grounding wheel is positioned behind the lowermost end of the rear wheels .

  According to this handcart, the user can ground the grounding wheel by depressing the operation portion of the jack lever when the front wheel abuts on or approaches the stepped surface. When the user further depresses the operation portion by the force of the foot, the contact portion acts as a fulcrum, and the attachment portion acts as a point of action, whereby the vehicle body is lifted and the front and rear wheels rise.

  According to the above configuration, the front end of the ground contact wheel is positioned rearward of the lowermost end of the rear wheel while the front and rear wheels are raised, so that the ground contact wheel is stepped when the user pushes the handcart forward. The lower end of the rear wheel is positioned on the upper stage at the time of contact with the surface. Thereafter, the ground wheel can be lifted from the lower surface by releasing the depression of the operation unit by the user. Thereby, the pushcart can be advanced without being hampered by the ground wheels. As a result, the user can lift the wheelbarrow with steps by utilizing the power of the foot that can exert a large force. Thereafter, the user can push the wheelbarrow with normal hand power when advancing the wheelbarrow. Therefore, the handcart can easily ride over the step without requiring a particularly large force on the user's hand.

  (2) The first and second ground contact wheels are disposed as the ground contact wheels, and the first and second ground contact wheels are attached to the ground contact portion so that the front wheels and the rear wheels rise up in the front-rear direction. It may be done.

  In this case, the vehicle body can be stably supported by the first and second ground contact wheels aligned in the front-rear direction with the front wheels and the rear wheels rising.

  (3) The rotating member is rotatably attached to the grounding portion in the vertical plane, and the first, second and third grounding wheels are attached at rotationally symmetrical positions with respect to the rotation center of the rotating member as the grounding wheels. Two of the first, second, and third ground contact wheels may be in contact with each other in the front-rear direction with the front wheels and the rear wheels rising.

  According to this configuration, when the operation portion of the jack lever is pushed down, any two of the first, second and third ground contact wheels can smoothly contact the lower surface. Therefore, the vehicle body can be supported smoothly and stably by any two ground contact wheels aligned in the front-rear direction.

  According to the present invention, by using the force of the foot at the step, it is possible to easily advance the wheelbarrow without requiring a large force on the hand.

It is a typical side view and a typical top view of a wheelchair concerning one form of the present invention. It is a typical perspective view of a part of wheelchair of FIG. It is a schematic side view of the wheelchair which shows the state by which the vehicle body was lifted from the floor surface. It is a schematic side view for demonstrating the operation | movement when the wheelchair of FIG. 1 passes a level | step difference of going up. It is a schematic side view for demonstrating the operation | movement when the wheelchair of FIG. 1 passes a level | step difference of going up. It is a typical side view of the wheelchair concerning a 1st modification. It is a typical side view of the wheelchair concerning the 2nd modification. It is a typical side view of the wheelchair concerning the 3rd modification. It is a typical side view of the wheelchair concerning a 4th modification. It is a typical side view of the wheelchair concerning a 5th modification. It is a typical side view of the wheelchair concerning a 6th modification. It is a typical side view of the wheelchair concerning a 7th modification.

  Hereinafter, a handcart according to an embodiment of the present invention will be described with reference to the drawings. In the following description, a wheelchair will be described as an example of a handcart.

(1) Wheelchair according to the embodiment Figs. 1 (a) and 1 (b) are a schematic side view and a schematic plan view of a wheelchair according to one embodiment of the present invention. 2 (a) and 2 (b) are schematic perspective views of a part of the wheelchair of FIG. FIG. 3 is a schematic side view of the wheelchair showing a state where the vehicle body is lifted from the floor surface.

  In FIGS. 1A and 1B, a pair of left and right front wheels 3 is provided at a lower front end of a vehicle body 2 of the wheelchair 1 and a pair of left and right rear wheels 4 are provided at a lower rear end of the vehicle body 2. In the present embodiment, the front wheel 3 is a caster. A pair of left and right handlebars 5 is provided at an upper rear end of the vehicle body 2. The user can hold the handle portion 5 to push or steer the vehicle body 2.

  A mounting portion 6 is set at the lower part of the vehicle body 2. The mounting portion 6 is constituted by a pair of left and right shafts extending in the horizontal direction. A jack lever 10 is rotatably mounted on the mounting portion 6 in a vertical plane. The jack lever 10 has a bent side shape and extends rearward from the mounting portion 6. In addition, although the jack lever 10 of this example is bent so that it may bend linearly, the jack lever 10 may have a side surface shape curved curvilinearly. The jack lever 10 is constituted by a pair of lever members 10a and 10b shown in FIG. 1 (b). The pair of lever members 10a and 10b are connected to each other by a connecting shaft 8 in the horizontal direction.

  As shown in FIG. 1A, a grounding portion 11 is set at an intermediate portion of the jack lever 10. In the present embodiment, the ground contact portion 11 is set at an intermediate bending portion of the jack lever 10. A pair of left and right ground wheels 14 is attached to the ground contact portion 11 of the jack lever 10. The left and right ground contact wheels 14 are symmetrically provided so as to sandwich the ground contact portion 11 of the jack lever 10.

  At the lower part of the vehicle body 2, an urging device 20 is provided which gives the jack lever 10 a rotational force about the mounting portion 6. The biasing device 20 is configured by, for example, a tension coil spring. The connecting shaft 7 is disposed forward of the mounting portion 6, and the connecting shaft 8 is disposed between the mounting portion 6 of the jack lever 10 and the ground portion 11. One end of the biasing device 20 is connected to the connecting shaft 7 attached to the lower part of the vehicle body 2, and the other end of the biasing device 20 is connected to the connecting shaft 8 attached to the jack lever 10. A tensile force is generated between itself and the connecting shaft 8. The biasing device 20 is disposed between the lever members 10 a and 10 b so as not to interfere with the jack lever 10.

  As shown by thick double-dotted lines in FIGS. 2A and 2B, the operation portion 15 is set at the rear end of the jack lever 10. As shown in FIG. The operation unit 15 is configured as a pedal and has a width greater than the width of an adult male's shoe.

  When the ground contact portion 11 is at a position higher than the attachment portion 6, as shown by an arrow a in FIG. 2A, a rotational force for causing the ground portion 11 to float on the jack lever 10 by the tensile force of the biasing device 20. Is given. Thereby, the ground contact wheel 14 and the operation unit 15 are accommodated in the space behind the vehicle body 2.

  The user can depress the operation unit 15 as shown by the white arrow c in FIG. 2 (a). When the grounding portion 11 is at a lower position than the mounting portion 6, as shown by an arrow b in FIG. 2B, a downward rotational force is applied to the jack lever 10 by the tensile force of the biasing device 20. .

  The length from the mounting portion 6 of the jack lever 10 to the ground contact portion 11 is set larger than the height from the floor surface to the mounting portion 6. Thus, when the operation unit 15 is depressed, the ground wheel 14 is grounded. In this state, as shown in FIG. 2B, the user can step on the operation unit 15 by putting one foot LE on the operation unit 15 located behind the ground contact wheel 14. In this case, the ground contact portion 11 of the jack lever 10 is supported on the floor surface by the ground contact wheel 14 and acts as a fulcrum. In addition, the mounting portion 6 acts as a point of action. As a result, as shown in FIG. 3, the vehicle body 2 is lifted from the floor surface, and the front wheels 3 and the rear wheels 4 rise. At this time, in FIG. 3, the length L2 in the front-rear direction from the ground portion 11 to the rear end of the operation portion 15 is the length L1 in the front-rear direction from the mounting portion 6 to the ground portion 11 of the jack lever 10 If it is large, the force to step on the operation unit 15 with the foot to lift the vehicle body 2 is reduced by the principle of leverage.

  Further, since the biasing device 20 applies a downward rotational force to the jack lever 10, the load that the user should apply to the operation portion 15 to lift the vehicle body 2 is reduced. Therefore, the user can lift the vehicle body 2 from the floor surface by slightly depressing the operation unit 15.

  As shown in FIG. 3, in the wheelchair 1 according to the present embodiment, the front end 14 f of the ground contact wheel 14 is positioned rearward of the lowermost end 4 b of the rear wheel 4 in a state where the vehicle body 2 is lifted by the jack lever 10. The grounding unit 11 is set as follows.

  FIG. 4 and FIG. 5 are schematic side views for explaining the operation when the wheelchair 1 of FIG. 1 passes the upward level difference.

  As shown in FIG. 4A, in the initial state, the wheelchair 1 is on the lower surface S1, and the front wheel 3 and the rear wheel 4 are in contact with the lower surface S1. In addition, the operation unit 15 of the jack lever 10 is located at the rear of the vehicle body 2. Therefore, the ground contact wheel 14 is supported by the vehicle body 2 in a floating state.

  The user holds the handle portion 5 and pushes the wheelchair 1 to advance the wheelchair 1. Thereafter, as shown in FIG. 4B, the front wheel 3 abuts on the step surface S3 of the step. In this case, if the step is large, the front wheel 3 can not be moved from the lower surface S1 to the upper surface S2 even if the user presses the wheelchair 1.

  Then, the user pushes down the operation portion 15 of the jack lever 10 as shown by the arrow b in FIG. 4 (b). When the ground contact portion 11 is lowered below the attachment portion 6, the ground wheel 14 is grounded to the lower surface S1 by the downward rotational force of the biasing device 20. When the user steps on the operation unit 15, as shown by arrow d in FIG. 4C, the vehicle body 2 is lifted from the lower surface S1 and the front wheels 3 and the rear wheels 4 float from the lower surface S1.

  In this state, the user presses the wheelchair 1 while depressing the operation unit 15. As a result, the wheelchair 1 advances with the ground wheel 14 supported on the lower surface S1 and the front wheel 3 passes above the step surface S3 as shown in FIG. 4 (d). Therefore, the user can easily get the front wheel 3 on the upper surface S2 without requiring a special large hand power.

  At this time, the front end 14 f of the ground contact wheel 14 is located rearward of the lowermost end 4 b of the rear wheel 4. Therefore, when the user advances the wheelchair 1 until the front end 14f of the ground contact wheel 14 abuts on the step surface S3, as shown in FIG. 5A, the lowermost end 4b of the rear wheel 4 is above the step surface S3. Pass through.

  With the front end 14f of the ground contact wheel 14 in contact with the step surface S3, the user removes his / her foot from the operation unit 15 to release the depression of the operation unit 15. As a result, as shown in FIG. 5B, the front wheel 3 and the rear wheel 4 come in contact with the upper stage surface S2, and the ground wheel 14 floats up from the lower stage surface S1.

  The user can advance the wheelchair 1 on the upper stage surface S2, as shown in FIG. 5 (c). When the wheelchair 1 moves forward, the ground contact wheel 14 that has floated up from the lower surface S1 can get over the step surface S3. Further, the user can store the ground contact wheel 14 and the operation unit 15 in the space behind the vehicle body 2 by lifting the operation unit 15.

  According to the wheelchair 1 in accordance with the present embodiment, the front end 14f of the ground contact wheel 14 is the lowermost end of the rear wheel 4 in a state where the front wheel 3 and the rear wheel 4 are lifted by the user depressing the operation portion 15 of the jack lever 10. Being positioned more rearward than 4b, the wheelchair 1 can be advanced easily without the need for extra large hand power, without being hampered by the ground wheels 14.

  Furthermore, when the ground contact wheel 14 is not used, the ground contact wheel 14 and the operation unit 15 are held in the space behind the vehicle body 2 by the biasing device 20. It is possible to prevent the operation of the wheelchair 1 from being hindered and to make the wheelchair 1 compact.

  The user may operate the jack lever 10 when the wheelchair 1 retreats and gets off the step. For example, as shown in FIG. 5C, the user retracts the wheelchair 1 in a state where the entire wheelchair 1 is on the upper surface S2. Thereafter, in a state where the lowermost end 4b of the rear wheel 4 is positioned in the vicinity of the step surface S3, the user depresses the operation portion 15 to ground the grounding wheel 14 as shown in FIG. 5 (b). When the user further depresses the operation unit 15, as shown in FIG. 5A, the vehicle body 2 is lifted from the upper stage surface S2, and the front wheel 3 and the rear wheel 4 rise above the upper stage surface S2.

  In this state, the user retracts the wheelchair 1 to move the front wheel 3 and the rear wheel 4 onto the lower surface S1, and gently releases the depression of the operation unit 15. In this way, it is possible to prevent the impact on the wheelchair 1 when the wheelchair 1 recedes and gets off the step.

(2) Modifications FIGS. 6 to 12 are schematic side views of the wheelchair 1 according to the first to seventh modifications. In the wheelchair 1 according to the first modification of FIG. 6, the mounting portion 6 is set to the axle of the rear wheel 4. According to this configuration, the mounting portion 6 can be shared with the axle. Thereby, the increase in the number of parts is suppressed.

  In the wheelchair 1 according to the second modification of FIG. 7, the rotating member 16 is rotatably attached to the ground contact portion 11 of the jack lever 10 in the vertical plane, and two pairs of ground wheels 14 can be rotated on the rotating member 16 Is attached to When the operation portion 15 of the jack lever 10 is pushed down, the rotating member 16 rotates with respect to the grounding portion 11, whereby the two pairs of ground wheels 14 are grounded in the front-rear direction. Thus, the vehicle body 2 is stably supported by the plurality of ground wheels 14.

  In this example, the front end 14f of the ground contact wheel 14 positioned forward of the two ground wheels 14 aligned in the front-rear direction with the front wheel 3 and the rear wheel 4 rising is positioned rearward of the lowermost end 4b of the rear wheel 4 The grounding unit 11 is set as follows. Thus, the user can easily advance the wheelchair 1 at the step without the need for extra hand power.

  In the wheelchair 1 according to the third modification of FIG. 8, the rotating member 17 is rotatably attached to the ground contact portion 11 of the jack lever 10 in the vertical plane, and three pairs of ground wheels 14 are rotatable on the rotating member 17 Is attached to The three pairs of ground wheels 14 are disposed in rotational symmetry with respect to the rotation center of the rotation member 17. When the operation portion 15 of the jack lever 10 is pushed down, the rotation member 17 rotates with respect to the ground contact portion 11, whereby any two pairs of ground wheels 14 are grounded in the front-rear direction. Thus, the vehicle body 2 is supported smoothly and stably by the plurality of ground wheels 14.

  In this example, the front end 14 f of the ground contact wheel 14 positioned forward of the two ground wheels 14 aligned in the front-rear direction with the front wheels 3 and the rear wheels 4 rising is further rearward than the lowermost end 4 b of the rear wheels 4. The grounding portion 11 is set to be positioned. Therefore, the user can advance the wheelchair 1 easily and smoothly without the need for extra large hand power at the step.

  In the wheelchair 1 according to the fourth modified example of FIG. 9, a pair of left and right support members 19 are attached to the ground contact portion 11 of the jack lever 10 in a symmetrical manner. As shown in FIG. 9A, each support member 19 is fixed to the ground contact portion 11 so as to extend rearward when the operation portion 15 of the jack lever 10 is positioned behind the vehicle body 2. The ground contact wheels 14 on the left and right are rotatably attached to the front ends of the left and right support members 19 respectively.

  As shown in FIG. 9B, when the vehicle body 2 is lifted by the depression of the operation portion 15, the support member 19 faces in the vertical direction. In this state, the vehicle body 2 is supported by the ground contact wheel 14 via the support member 19. Therefore, the user can lift the vehicle body 2 higher.

  The wheelchair 1 which concerns on the 5th modification of FIG. 10 has the same structure as the wheelchair 1 which concerns on the 4th modification of FIG. 9 except the point by which the jack lever 10 is comprised so that folding is possible. As shown in FIG. 10 (a), the jack lever 10 is composed of a lever front portion 12 from the intermediate bending portion to the front end portion and a lever rear portion 13 from the intermediate bending portion to the rear end portion. The lever front portion 12 and the lever rear portion 13 are connected via a hinge h. Thereby, the lever rear portion 13 is bendable with respect to the lever front portion 12. Also, a regulating member 21 is attached along the rear end of the lever front portion 12 and the front end of the lever rear portion 13. The restriction member 21 is bent at a predetermined angle. Thereby, the bending angle of the lever rear portion 13 with respect to the lever front portion 12 is restricted.

  The support member 19 is fixed to the restriction member 21, and the ground wheel 14 is attached to the support member 19. A biasing device 22 is connected between a portion of the lever front portion 12 and a portion of the lever rear portion 13. The biasing device 22 is configured, for example, by a tension coil spring. The biasing device 22 generates a tensile force between the lever front portion 12 and the lever rear portion 13. With the operation unit 15 not operated by the user, the jack lever 10 is folded about the hinge h by the biasing device 22 as shown by the dotted arrow e in FIG. 10 (b). As a result, the operation unit 15 is stored in the space behind the vehicle body 2 along the back of the vehicle body 2.

  In the wheelchair 1 according to the sixth modification of FIG. 11, the lever front portion 12 and the lever rear portion 13 of the jack lever 10 are connected via a hinge h which is an intermediate bending portion. Thereby, the bending angle between the lever front portion 12 and the lever rear portion 13 can be changed according to the operation of the jack lever 10 by the user. Further, the grounding portion 11 is set to the lever rear portion 13 at the rear of the intermediate bending portion. Similar to the second modification of FIG. 7, the rotary member 16 is rotatably mounted in the vertical plane to the ground contact portion 11, and two pairs of ground wheels 14 are rotatably mounted to the rotary member 16. There is.

  A connecting shaft 7 a is attached to the rear of the vehicle body 2, and a connecting shaft 8 a is attached to the lever rear portion 13 of the jack lever 10. One end of the biasing device 20 is connected to the connecting shaft 7a, and the other end is connected to the connecting shaft 8a. As shown in FIG. 11A, when the jack lever 10 is not operated, the biasing device 20 causes the lever rear portion 13 of the jack lever 10 to be folded relative to the lever front portion 12. As a result, the operation unit 15 is stored in the space behind the vehicle body 2. As shown in FIG. 11 (b), when the user depresses the operation unit 15, the two ground wheels 14 attached to the ground unit 11 are grounded.

  The wheelchair 1 according to the seventh modification of FIG. 12 has the same configuration as the wheelchair 1 according to the third modification of FIG. 8 except that the diameter of the front wheel 3X is larger than the diameter of the rear wheel 4X. In the present embodiment, the ground contact portion 11 is set such that the front end 14f of the ground contact wheel 14 located forward with the front wheels 3X and the rear wheels 4X rising is positioned behind the lowermost end 4b of the rear wheels 4X. . Therefore, the user can advance the wheelchair 1 more easily and smoothly without the need for extra large hand power at the step.

  In the wheelchair 1 shown in FIGS. 1, 6, 7, 9, 10 and 11, the diameter of the front wheel 3 is greater than the diameter of the rear wheel 4 as in the example of the wheelchair 1 of FIG. It may also be large.

  Further, the number of front wheels 3, 3X, rear wheels 4, 4X and ground wheels 14 is not limited to the above embodiment, and any number of front wheels 3, 3X, rear wheels 4, 4X and ground wheels 14 can be used. May be provided. For example, in the wheelchair 1 according to the third modified example of FIG. 8, four pairs or five or more pairs of ground wheels 14 may be rotatably attached to the rotation member 17.

  Although the said embodiment is an example which applied this invention to the wheelchair 1, this invention is applicable not only to the wheelchair 1 but to other handcarts, such as a stroller or a trolley | bogie, similarly.

  DESCRIPTION OF SYMBOLS 1 ... Wheelchair, 2 ... Vehicle body, 3, 3X ... Front wheel, 4, 4X ... Rear wheel, 4b ... Bottom end, 5 ... Handle part, 6 ... Mounting part, 7, 7a, 8, 8a ... Connecting shaft, 10 ... Jack Lever, 10a, 10b: lever member, 11: grounding portion, 12: lever front portion, 13: lever rear portion, 14: grounding wheel, 14f: front end, 15: operating portion, 16, 17: rotating member, 19: support Member, 20, 22 ... biasing device, 21 ... regulating member, h ... hinge, LE ... one foot, S1 ... lower surface, S2 ... upper surface, S3 ... step surface

Claims (3)

A body with front and rear wheels,
A jack lever having a bent side shape, rotatably mounted in a vertical plane to a mounting portion set to the vehicle body, and extending rearward from the mounting portion;
A grounding portion set at an intermediate portion of the jack lever;
A ground wheel disposed on the ground portion;
An operation unit set at a rear end of the jack lever;
The jack lever includes an urging device for applying a rotational force in a direction in which the ground contact portion rises.
The jack lever rotates against the rotational force given by the biasing device when the operation unit is pushed down, and the operation unit is further pushed down in a state where the ground contact wheel is in contact with the ground to lift the vehicle body. Float the front wheel and the rear wheel,
A handcart having the contact portion set such that a front end of the ground contact wheel is positioned rearward of a lowermost end of the rear wheel when the front wheel and the rear wheel rise. First and second ground wheels are disposed as the ground wheels,
The handcart according to claim 1, wherein the first and second ground contact wheels are attached to the ground contact portion such that the front wheels and the rear wheels are in contact with each other in the front-rear direction and grounded. A rotary member is attached to the ground contact portion rotatably in a vertical plane;
As the ground contact wheels, first, second and third ground contact wheels are mounted at rotationally symmetrical positions with respect to the rotation center of the rotating member,
The handcart according to claim 1, wherein two of the first, second and third ground contact wheels are grounded in line in the front-rear direction with the front wheel and the rear wheel rising.

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