JP6155294B2 - Wheelbarrow - Google Patents

Description

  The present invention relates to a wheelbarrow such as a silver car or a shopping car.

  Conventionally, this type of wheelbarrow has a pair of left and right front wheel legs that have a handle attached to the upper end and rotatably supports the front wheel at the lower end, and the upper end can be folded in the front-rear direction with respect to each front wheel leg cage. A pair of left and right rear wheel leg cages that are pivotally supported by the rear wheels and rotatably support the rear wheels at the lower ends, and upper ends at the upper ends of the front wheel leg cages so that each front wheel leg cage can be folded in the left-right direction. A front X-link that pivotally supports two link members that are pivotally supported and slidably supported along the lower ends of the front wheel legs, respectively, and one end of each front wheel leg A pair of left and right side arms that are supported slidably along the other end and pivotally supported by the respective rear wheel leg rods so as to be swingable in the vertical direction, and each rear wheel leg rod can be folded in the left and right directions. To each front wheel leg heel, and pivotally supported in the center in the longitudinal direction. A rear X-link that is rotatably supported by two link members, each having one end pivotally supported by a middle broken link and the other end slidably supported by each rear wheel leg rod. What is provided is known (see Patent Document 1).

  In such a wheelbarrow, when the front wheel leg cage and the rear wheel leg cage are folded from the deployed state, the upper end of each rear wheel leg cage rotates around the pivot part with respect to each front wheel leg cage, One end of each side arm pivotally supported at the other end of the rear wheel leg rod slides along each front wheel leg rod, and each front wheel leg rod and each rear wheel leg rod is folded in the front-rear direction. Further, when each link member of the front X link rotates around the shaft support portion and is folded, the middle link is bent at the center, and accordingly, each link member of the rear X link rotates around the shaft support portion to each front wheel. The leg rod and each rear wheel leg rod are folded in the left-right direction.

JP 2000-300629 A

By the way, when folding each front wheel leg rod and each rear wheel leg rod in the front-rear direction and the left-right direction, it is necessary to synchronize the movements of the link members of the front X link and the rear X link.
In that case, if one end of each end of each link member of the front X link and the rear X link is pivotally supported by a separate member and positioned, each link member of the front X link and the rear X link It becomes very difficult to synchronize each movement.
Therefore, in order to synchronize the movements of the link members of the front X link and the rear X link, positioning of separate members that pivotally support one end of both ends of the link members of the front X link and the rear X link. It is necessary to carry out each with high accuracy, and it is impossible to easily manufacture a wheelbarrow that can fold each front wheel leg rod and each rear wheel leg rod in the front-rear direction and the left-right direction with high accuracy.

  The present invention has been made in view of such points, and the object of the present invention is to accurately support one end of each link member of the front X link and the rear X link with respect to a single member. By positioning, it is possible to easily manufacture a wheelbarrow that can fold each front wheel leg rod and each rear wheel leg rod in the front-rear direction and the left-right direction with high accuracy.

In order to achieve the above object, according to the present invention, as a handcart, a pair of left and right front wheel leg rods having a handle attached to the upper end and rotatably supporting the front wheel at the lower end, and the upper ends of the front wheel leg rods are front and rear. A pair of left and right rear wheel legs that are pivotally supported to be foldable in the direction and rotatably support the rear wheel at the lower end, and upper ends of the front wheel legs so that the front wheel legs can be folded in the left and right directions. Two link members, each having an upper end pivotally supported by each part and a lower end each supported so as to be slidable along the lower end part of each front wheel rod, are pivotally supported at the center in the longitudinal direction of each other. A front X-link, a pair of left and right side arms, one end of which is pivotally supported by each of the front wheel leg rods so as to be swingable in the vertical direction, and the other end is slidably supported along each of the rear wheel leg rods; Each of the rear wheel leg folds can be folded left and right. The two link members to one another in the longitudinal direction in which the upper end to the upper end is respectively pivoted to the rear nearer the longitudinal center portion of the pivoted and lower end each of the respective side arms of the front wheels Ashi杆as And a rear X link that is rotatably supported at the center. And the upper end of each said rear wheel leg rod and the upper end of each link member of the said front side X link and the said rear side X link are each pivotally supported by the fixed bracket fixedly provided by the upper end part of each said front wheel leg rod. It is characterized by that.

  In addition, a pair of left and right sides of which one of the front X link and the rear X link has an outer end portion pivotally supported by each link member and the inner end portions are supported so as to be foldable around a shaft support portion. A holding link is provided. Further, when the front wheel leg rods and the rear wheel leg rods are deployed on the holding links, the front wheel leg rods and the rear wheel leg rods are folded in the front-rear direction and the left-right direction. A conversion member that converts each holding link into a permissible position that allows the front link leg rod and a rear wheel leg rod to be folded in the front-rear direction and the left-right direction. The conversion member extends in the vertical direction, one end in the vertical direction is connected to the shaft support portion of each holding link, and any of the front X link and the rear X link with respect to the midway portion in the vertical direction The shaft support portion of one of the link members is slidably supported in the vertical direction, and each holding link is converted into an allowable position and a restricted position by an operation in the vertical direction by the other end in the vertical direction. Also good.

  In addition, when the conversion member is unfolded when the front wheel leg rods and the rear wheel leg rods are deployed, the shaft support portion of each holding link is positioned more than the front X link and the left and right end portions of each holding link. The permissible position where either one of the link members of the rear side X link is brought close to the shaft support portion, and the shaft support portion of each holding link are located at the front X link and the rear side X rather than the left and right end portions of each holding link. You may make it convert into the control position separated from the axial support part of any one link member of a link.

  Also, a pair of left and right arms whose outer ends are pivotally supported by the upper ends of the other link member of the front side X link and the rear side X link, and the inner ends are supported so as to be foldable around the shaft support portion. A member is provided. Each of the arm members includes an extended piece extending from one of them to the other side beyond the shaft support portion, and the front wheel is linked to the upward movement of the extended piece. A grip portion may be provided that is gripped when the leg rod and each of the rear wheel leg rods are folded in the front-rear direction and the left-right direction.

  Further, the front wheel may be supported so as to be able to turn with respect to a lower end of each front wheel leg rod via a caster.

  In short, in short, the upper end of each link member of the front X link and the rear X link is pivotally supported by the fixed bracket fixed to the upper end portion of each front wheel leg rod so that the front X link and the rear X link The upper end of each link member can be individually accurately positioned on a single fixed bracket, and a wheelbarrow that can fold each front wheel leg cage and each rear wheel leg cage accurately in the front-rear and left-right directions is easily manufactured. be able to.

One end in the up / down direction extending in the up / down direction is connected to the shaft support portion of each holding link, and the middle portion in the up / down direction slides in the up / down direction with respect to the shaft support portion of one of the front X link and the rear X link. A conversion member for converting each holding link by converting each holding link into an allowable position and a restriction position by an operation in the vertical direction by the other vertical end of the conversion member supported freely. The movement in the vertical direction is completely different from the movement of each link member of the front X link and the rear X link. Therefore, each holding link is converted into a permissible position and a restriction position by operating the conversion member in the vertical direction, and the front wheel of each front wheel leg heel is not required to maintain the posture of the wheelbarrow when operating the conversion member. The conversion member is operated in a state in which the rear wheels of the rear wheel leg rods are stretched. As a result, the balance between the operator and the wheelbarrow itself is maintained without tilting when the conversion member is operated, and the conversion member becomes very easy to operate.Even if the wheelbarrow is applied to an elderly car, etc. The link can be smoothly converted into the allowable position and the restriction position.
In addition, since each holding link is converted into an allowable position and a restriction position by an operation in the vertical direction of the conversion member that is completely different from the movement of each link member of the front X link and the rear X link, the operator misunderstands. Thus, it is possible to prevent forgetting to operate the conversion member or to make an erroneous operation, and it is possible to surely prevent an accidental folding operation of each front wheel leg rod and each rear wheel leg rod in the front-rear direction and the left-right direction during deployment.

  Further, when each front wheel leg rod and each rear wheel leg rod is deployed, the shaft support portion of each holding link is converted by the conversion member so that the shaft of one of the link members of either the front X link or the rear X link from the left and right ends. By converting the support portion into the allowed position close to and the separated restricted position, the allowed position and restricted position of each holding link by the conversion member can be easily determined silently.

  Also, an extension piece that extends from one of the arm members that can be folded around the shaft support portion between the upper ends of the other link member of either the front X link or the rear X link to the other beyond the shaft support portion. In addition, in conjunction with the upward lifting operation of the extension piece, each front wheel leg cage is provided with a gripping part that is gripped when folding each front wheel leg cage and each rear wheel leg cage in the front-rear direction and the left-right direction. And the rear wheel leg rods can be easily folded in the front-rear direction and the left-right direction by lifting the grips upward.

  Furthermore, by supporting the front wheels so as to be able to turn with respect to the lower ends of the front wheel legs キ ャ via the casters, the front wheels can be stably stabilized indirectly without steering the front wheels directly via the front wheel legs 杆 with the handle. Can be steered.

It is the perspective view seen from diagonally forward in the state which developed the silver car concerning an embodiment of the invention. It is a front view of the silver car of FIG. It is a side view of the silver car of FIG. It is a rear view in the state where each rear side maintenance link of the silver car of Drawing 1 was changed into a permissible position. It is a rear view in the state where each rear side holding link of the silver car of Drawing 4 was changed into a regulation position. It is the perspective view seen from diagonally forward in the state which folded the silver car of FIG. It is a front view of the silver car of FIG. It is a side view of the silver car of FIG. FIG. 4 is a side view of the silver car of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view of a silver car according to an embodiment of the present invention when viewed from an oblique front, FIG. 2 is a front view of the silver car, and FIG. 3 is a side view of the silver car.

  1 to 3, reference numeral 1 denotes a silver car as a handcart. The silver car 1 includes a pair of left and right front wheel rods 12 and 12 that rotatably support a front wheel 11 at a lower end, and a rear wheel 13. A pair of left and right rear wheel leg rods 14 and 14 are rotatably provided at the lower end. Each front wheel leg rod 12 is formed in a cylindrical shape, and inside each front wheel leg rod 12, a handle column (not shown) having a handle 15 provided at the upper end is inserted and attached from above. Each handle column is provided with through holes at equal intervals in the longitudinal direction (vertical direction), and an arbitrary through hole is formed in the screw member 10 to be fitted and screwed in the radial direction of each front wheel leg rod 12. By inserting, the height of the handle 15 can be adjusted in accordance with the protrusion amount of each handle column with respect to each front wheel leg 12. Each front wheel 11 is supported by the lower ends of the front wheel leg rods 12 and 12 via the casters 5 so as to be turnable.

  In addition, a fixing bracket 16 is fixed to the upper end portion of each front wheel leg rod 12, and the upper end of each rear wheel leg rod 14 is pivotally supported by each fixing bracket 16 so that it can be folded in the front-rear direction. Between each front wheel leg rod 12, a front X link 21 connected so as to be able to fold each front wheel leg rod 12 in the left-right direction is provided. The front X link 21 includes two link members 22 and 22 that are rotatably supported by a shaft support portion 20 at a central portion in the longitudinal direction. The upper end of each link member 22 is pivotally supported by the fixed bracket 16. On the other hand, the lower end of each link member 22 is pivotally supported by a slide bracket 23 slidably supported along each front wheel leg rod 12 at the lower part of each front wheel leg rod 12.

  A brake 17 that brakes the rear wheel 13 is rotatably supported at the lower end of each rear wheel leg rod 14. Each handle 15 is provided with a brake lever 18, and the brake 17 is rotated via a pair of left and right brake operation wires 19, 19 operated by the brake levers 18, 18 so that each rear wheel 13 is rotated. It is designed to brake.

  A pair of left and right side arms 24 and 24 are connected between each front wheel leg rod 12 and each rear wheel leg rod 14. The front end of each side arm 24 is pivotally supported by a bracket 25 fixed in the vicinity of the middle part of each front wheel leg 12 so as to be swingable in the vertical direction. The rear ends of the side arms 24 are pivotally supported by slide brackets 26 slidably supported along the rear wheel leg rods 14 on the lower side of the rear wheel leg rods 14.

  Between each of the rear wheel leg rods 14, there is provided a rear X link 31 connected so that each of the rear wheel leg rods 14 can be folded in the left-right direction. The rear X link 31 includes two link members 32 and 32 that are rotatably supported by a shaft support portion 30 at a central portion in the longitudinal direction. The upper ends of the link members 32 are pivotally supported together with the upper ends of the rear wheel leg rods 14 by the fixed bracket 16. On the other hand, the lower end of each link member 32 is pivotally supported by a bracket 33 that is rotatably supported closer to the rear than the center of each side arm 24.

  The front X link 21 has a pair of left and right front holding links whose outer end portions are pivotally supported below the shaft support portion 20 of each link member 22 and whose inner end portions can be folded around the shaft support portion 34. 35, 35 are provided. Further, the rear X link 31 has a pair of left and right sides whose outer end portions are pivotally supported below the shaft support portion 30 of each link member 32 and whose inner end portions can be folded around the shaft support portion 36. Rear holding links 37 and 37 (holding links) are provided.

  FIG. 4 is a rear view of the silver car 1 with the rear holding links 37 converted into the allowable positions, and FIG. 5 is a rear view of the silver car 1 with the rear holding links 37 converted into the restriction positions. Each is shown.

  As shown in FIGS. 4 and 5, the left and right rear holding links 37, 37 have the front wheel leg rods 12 and the rear wheels when the front wheel leg rods 12 and the rear wheel leg rods 14 are deployed. A permissible position that allows the front and rear folding operations in the front-rear direction and the left-right direction of the leg rod 14, and a restriction position that regulates the front-and-rear and left-right folding operations of the rear wheel leg cages 14 and A conversion member 41 for converting each rear holding link 37 is provided.

  The conversion member 41 is formed in a stay shape extending in the vertical direction, and the lower end thereof is connected to the shaft support portion 36 of each rear holding link 37. A long hole 42 that is long in the vertical direction is provided in the middle part of the conversion member 41 in the vertical direction. Further, the shaft support portion 30 of each link member 32 of the rear side X link 31 protrudes forward, and the protruding end is inserted into the long hole 42 of the conversion member 41 and supported so as to be slidable in the vertical direction. At this time, the shaft support portions 30 (projecting ends) of the link members 32 of the rear X link 31 are located in the long holes 42 of the conversion member 41 when the front wheel leg rods 12 and the rear wheel leg rods 14 are deployed. It is located near the center of the vertical direction. For this reason, the shaft support portion 36 of each rear holding link 37 is closer to the shaft support portion 30 between the link members 32 and 32 of the rear X link 31 than both the left and right outer end portions, that is, from both the left and right outer end portions. Is also converted into an allowable position (position shown in FIG. 4) positioned upward.

  The conversion member 41 converts each rear holding link 37 into a restriction position (position shown in FIG. 5) in order to restrict the accidental folding operation of each front wheel leg rod 12 and each rear wheel leg rod 14 during deployment. Like to do. Specifically, the shaft support portion 36 of each rear holding link 37 is farther from the shaft support portion 30 between the link members 32 and 32 of the rear X link 31 than both left and right outer end portions, that is, both left and right outer ends. It is converted into a restriction position positioned below the part. At this time, the shaft support portion 30 of each link member 32 of the rear X link 31 performs an operation of pushing down the upper end of the conversion member 41 downward, so that the upper end from approximately the center in the vertical direction in the long hole 42 of the conversion member 41 is increased. The rear holding links 37 are converted into the restricting positions.

  FIG. 6 is a perspective view of the silver car 1 viewed from an oblique front in a folded state, FIG. 7 is a front view of the silver car 1, and FIG. 8 is a side view of the silver car 1. As shown also in FIGS. 6 to 8, the respective fixings are made between the upper ends of the link members 22, 22 of the front X link 21, that is, between the fixing brackets 16, 16 at the upper end of each front wheel leg rod 12. A pair of left and right arm members 46, 46 whose outer ends are pivotally supported on the bracket 16 are provided. Each of the arm members 46 is supported so that its inner ends can rotate about the shaft support portion 45 and can be folded. One of the arm members 46 includes an extending piece 47 that extends beyond the shaft support 45 to the other. The extended pieces 47 are gripped when the extended pieces 47 are lifted upward, and each front wheel leg rod 12 and each rear wheel leg rod 14 are interlocked with the upward movement of the extended piece 47. A grip portion 48 is provided to fold them in the front-rear direction and the left-right direction.

  FIG. 9 shows a side view of the silver car 1 with a bag attached to the front and rear. As shown in FIG. 9, a front bag 61 and a rear bag 62 are attached to each front wheel leg rod 12 and each rear wheel leg rod 14. The front bag 61 includes a hook-shaped upper holder 63 attached to the fixed bracket 16 at the upper end of each front wheel leg rod 12 and a lower holder attached to the bracket 25 near the middle portion of each front wheel leg rod 12. 65. The rear bag 62 is accommodated between the rear wheel leg rods 14 that are attached to the vicinity of the middle part of the rear wheel leg rods 14 and have a lower end held by a rear holding tool 64 that extends forward and does not interfere with walking. ing.

  Therefore, in the present embodiment, the upper ends of the rear wheel leg rods 14, the upper ends of the link members 22 and 32 of the front X link 21 and the rear X link 31 are fixed to the upper end portions of the front wheel leg rods 12. Since it is pivotally supported by the fixed bracket 16, the upper end of each rear wheel leg 14, the upper ends of the link members 22, 32 of the front X link 21 and the rear X link 31 are individually attached to a single fixed bracket 16. It is possible to easily manufacture the silver car 1 in which each front wheel leg rod 12 and each rear wheel leg rod 14 can be folded in the front-rear direction and the left-right direction with high accuracy.

  Further, the lower end of the conversion member 41 extending in the vertical direction is connected to the shaft support portion 36 of each rear holding link 37, and the link members 32, 32 of the rear X link 31 in the long hole 42 in the middle in the vertical direction. The shaft support portions 30 are supported so as to be slidable in the vertical direction, and each rear holding link 37 is converted into an allowable position and a restricting position by an operation in the vertical direction by the upper end. The movement of the conversion member 41 in the vertical direction when the link 37 is converted is completely different from the movement of the link members 22 and 32 of the front X link 21 and the rear X link 31. For this reason, each rear holding link 37 is converted into an allowable position and a restricted position by an operation of the conversion member 41 in the vertical direction, and it is not necessary to put a hand in maintaining the posture of the silver car 1 when the conversion member 41 is operated. The conversion member 41 is operated in a state where the front wheel 11 of each front wheel leg rod 12 and the rear wheel 13 of each rear wheel leg rod 14 are strung. As a result, when the conversion member 41 is operated, the operator and the silver car 1 itself are kept in a balanced state without being inclined, and the conversion member 41 becomes very easy to operate. However, each rear holding link 37 can be smoothly converted into the allowable position and the restriction position.

  Moreover, each rear holding link 37 is converted into an allowable position and a restricted position by an operation in the vertical direction of the conversion member 41 that is completely different from the movement of the link members 22 and 32 of the front X link 21 and the rear X link 31. Therefore, the operator does not forget to operate the conversion member 41 due to misunderstanding or erroneous operation, and the front wheel leg rod 12 and the rear wheel leg rod 14 are unintentionally moved in the front-rear direction and the left-right direction at the time of deployment. The folding operation can be surely prevented.

  Further, when the front wheel leg rods 12 and the rear wheel leg rods 14 are deployed, the shaft support portions 36 of the rear holding links 37 are linked by the conversion member 41 to the link members 32, 32 of the rear X link 31 rather than the left and right ends. Since it is converted into an allowed position close to the shaft support portions 30 and a regulated position separated from each other, the allowed position and the regulated position of each rear holding link 37 by the conversion member 41 can be easily determined silently. can do.

  Further, the extending piece 47 of one arm member 46 of the arm members 46 between the fixing brackets 16 and 16 at the upper end of each front wheel leg rod 12 is lifted upward. Since the front wheel leg rods 12 and the rear wheel leg rods 14 are folded in the front-rear direction and the left-right direction, a grip portion 48 is provided. The folding operation in the front-rear direction and the left-right direction with the heel 14 can be easily performed by the upward lifting operation of the grip portion 48.

  Further, since the front wheels 11 are pivotably supported via the casters 5 with respect to the lower ends of the front wheel leg rods 12, the front wheels 11 are indirectly guided by the handle 15 via the front wheel leg rods 12 without direct steering. The front wheel 11 can be steered stably.

  The present invention is not limited to the above-described embodiments, and includes various other modifications. For example, in the above-described embodiment, each rear holding link 37 is converted into the allowable position and the restriction position by operating the conversion member 41. However, the lower end of the conversion member is connected to the shaft support portion of each front holding link, and the front side By inserting the projecting ends of the X-link link members protruding forward into the elongated holes of the conversion member and slidably supporting them in the vertical direction, the front holding links can be operated by operating the conversion members. You may make it convert into a permissible position and a control position. At this time, by the vertical operation of the conversion member, the shaft support portion of each front holding link is closer to the shaft support portion between the link members of the front X link than the left and right outer end portions, that is, than the left and right outer end portions. On the other hand, the shaft support portion of each front holding link is separated from the shaft support portion of the link members of the front X link than the left and right outer end portions, that is, more than the left and right outer end portions. It is converted into a restriction position positioned below.

  In the present embodiment, the lower end of the conversion member 41 is connected to the shaft support portion 36 of each rear holding link 37, but the upper end of the conversion member is connected to the shaft support portion of each rear holding link or each front holding link. The rear holding link or the front holding link may be converted into the allowable position and the restriction position by an operation in the vertical direction of the lower end of the conversion member.

  Moreover, in the said embodiment, although the silver car 1 was used as a handcart, handcarts, such as a shopping car, may be sufficient.

1 Silver car (wheelbarrow)
11 Front wheel 12 Front wheel leg rod 13 Rear wheel 14 Rear wheel leg rod 15 Handle 16 Fixing bracket 20 Axial support portion 21 Front X link 22 Link member 24 Side arm 30 Axis support portion 31 Rear X link 32 Link member 36 Axis support portion 37 Rear side Retention link (retention link)
41 Conversion member 45 Shaft support 46 Arm member 47 Extension piece 48 Gripping part 5 Caster

Claims (5)

A pair of left and right front wheel legs that have a handle attached to the upper end and rotatably support the front wheel at the lower end;
A pair of left and right rear wheel legs that are pivotally supported so that the upper ends of the front wheel legs can be folded in the front-rear direction, and that support the rear wheels rotatably at the lower ends;
An upper end is pivotally supported at the upper end of each front wheel leg so that each front wheel leg can be folded left and right, and a lower end is supported slidably along the lower end of each front wheel leg. A front X link formed by rotatably supporting two link members in the longitudinal center of each other,
A pair of left and right side arms, one end of which is pivotally supported by each front wheel leg rod so as to be swingable in the vertical direction, and the other end is slidably supported along each rear wheel leg rod;
The upper ends of the front wheel leg rods are pivotally supported at the upper ends of the front wheel leg cages so that the rear wheel leg cages can be folded in the left-right direction, and the lower ends are closer to the rear than the longitudinal center of the side arms. A rear X-link that pivotally supports two pivotally supported link members at the center in the longitudinal direction of each other;
With
The upper ends of the rear wheel leg rods and the upper ends of the link members of the front X link and the rear X link are pivotally supported by fixed brackets fixed to the upper end portions of the front wheel rod rods, respectively. A wheelbarrow characterized by that. Either one of the front X link and the rear X link has a pair of left and right ends that are supported by the respective link members so that the outer end portions are pivotally supported and the inner end portions are foldable around the shaft support portion. A retention link is provided,
Each holding link is provided with a front-and-rear and left-right folding operation of each front wheel leg rod and each rear wheel leg rod when the front wheel leg rod and each rear wheel leg rod are deployed. A conversion member that converts each holding link to an allowable position and a restriction position that restricts a folding operation in the front-rear direction and the left-right direction of each front wheel leg rod and each rear wheel leg rod;
The conversion member extends in the vertical direction, and one end in the vertical direction is connected to the shaft support portion of each holding link, and one of the front X link and the rear X link with respect to the midway portion in the vertical direction. The shaft support portions of the link members are slidably supported in the vertical direction, and each holding link is converted into an allowable position and a restricted position by an operation in the vertical direction by the other end in the vertical direction. The wheelbarrow described in 1.   The conversion member is configured such that when the front wheel leg rods and the rear wheel leg rods are deployed, the shaft support portions of the holding links are positioned at the front X link and the rear side rather than the left and right end portions of the holding links. The permissible position in which the link member of any one of the X links is brought close to the shaft support part, and the shaft support part of each holding link is located closer to the front X link and the rear X link than the left and right ends of each holding link. The handcart according to claim 2, wherein the wheelbarrow is converted into a restriction position separated from a shaft support portion of any one of the link members.   A pair of left and right arm members whose outer ends are pivotally supported by the upper ends of the other link member of the front side X link and the rear side X link, and the inner ends are supported so as to be foldable around a shaft support portion. Each of the arm members includes an extending piece extending from one of them to the other over the shaft support portion, and the extending piece is connected to each of the extending members in conjunction with the upward movement of the extending piece. The handcart of Claim 2 or Claim 3 provided with the holding part hold | gripped when folding a front wheel leg rod and each said rear wheel leg rod in the front-back direction and the left-right direction.   The wheelbarrow according to any one of claims 1 to 4, wherein the front wheel is rotatably supported via a caster with respect to a lower end of each front wheel leg rod.

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