JP4215474B2 - Carrying cart - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a folding portable cart used for carrying baggage and the like.
[0002]
[Prior art]
This type of carrying cart is generally a pair of left and right columns that are parallel to each other, a pair of left and right wheels that are supported by the lower ends of the pair of columns, and a cantilever supported near the lower ends of the pair of columns. It is configured with a free loading section. The pair of left and right struts are connected to each other at the upper part, and the connecting part serves as a handle for gripping by hand when the carrying cart is moved. Further, each of the pair of struts is constituted by connecting a plurality of pipes, for example, three pipes, the intermediate pipe is slidably inserted into the lower pipe, and the upper pipe is slidably inserted into the intermediate pipe, It has a flexible structure. And when the upper pipe is pulled up with respect to the intermediate pipe, the intermediate pipe is pulled up with respect to the lower pipe, and when the column is extended, the upper pipe is fixed with respect to the intermediate pipe, the intermediate pipe is fixed with respect to the lower pipe, In order to keep the struts in the stretched state, a lock mechanism is provided for each, and in order to allow the struts to be contracted from the stretched state, there are lock release mechanisms for releasing the fixed state of the pipes. Is provided.
[0003]
When carrying a load with the carrying cart having such a configuration, the load placing portion is tilted forward with respect to the support column and opened so that the load placement portion is substantially perpendicular to the support column, and the support post is extended to be loaded. Put your luggage on the club. On the other hand, when carrying without a carrying cart, the intermediate pipe is pushed into the lower pipe, the upper pipe is pushed into the intermediate pipe, the struts are contracted, and the loading section is moved toward the struts. Then, the loading unit is folded so as to be superimposed on the column (see, for example, Patent Document 1).
[0004]
[Patent Document 1]
Japanese Utility Model Publication No. 5-20970
[0005]
[Problems to be solved by the invention]
In the conventional carrying cart, the strut is composed of three pipes as described above, and the strut is stretched when carrying the luggage, and the strut is shrunk when not carrying it. The lock / unlock mechanism that fixes the pipe and releases the fixed state of the pipes when the support column contracts has a complicated structure. In particular, in consideration of operability, the lower pipe and the intermediate pipe can be released from the fixed state by pressing the upper pipe down. It has a complicated structure. Thus, if the structure of the unlocking mechanism becomes complicated, it is difficult to manufacture, and there is a possibility that a failure occurs or the reliability of the operation is lowered.
[0006]
The present invention has been made in view of the circumstances as described above, and has a simpler structure than the conventional one, is relatively easy to manufacture, has a low possibility of causing failure, and has certainty of operation. The purpose is to provide a high carrying cart.
[0007]
[Means for Solving the Problems]
The invention according to claim 1 is a pair of left and right lower pipes parallel to each other, a pair of left and right wheels supported by the lower ends of the pair of lower pipes, and when being transported forward with respect to the pair of lower pipes A load-carrying portion supported in a cantilevered manner near the lower ends of the pair of lower pipes and a sleeve on each of the left and right sides so as to rotate between the position and the carrying position that is caused to overlap the lower pipe Are integrally formed, and each sleeve is fitted and fixed to the upper end of each lower pipe, and a pair of left and right intermediate pipes connected to the upper ends of the pair of lower pipes. Sleeves are integrally formed on both sides, and each sleeve is fitted and fixed to the upper end of each intermediate pipe, and the handle is slidably fitted to the upper ends of the pair of intermediate pipes. Insertion And a pair of left and right upper pipes having upper parts connected to each other and having a carrying grip part so as not to be pulled out from the intermediate pipe. A portion that keeps the upper pipe from being pushed down with respect to the intermediate pipe when the upper pipe is pulled up with respect to the intermediate pipe, and releases the state as appropriate so that the upper pipe can be pushed down with respect to the intermediate pipe. The connecting member is formed by a lower member and an upper member connected to each other by a hinge, and each sleeve integrally formed on each of the left and right sides of the lower member is an upper end portion of each lower pipe. The sleeves integrally formed on the left and right sides of the upper member are respectively attached to the lower end portions of the intermediate pipes. The intermediate pipe is rotated with respect to the lower pipe between a standing position where the lower pipe and the intermediate pipe are aligned and a folding position where the lower pipe and the intermediate pipe overlap, The pipe and the intermediate pipe are provided with an engaging means that keeps the lower pipe and the intermediate pipe standing in a straight line and releases the state as appropriate to enable the rotation of the intermediate pipe relative to the lower pipe. The engaging means is slidably fitted into the upper end of the lower pipe so that the upper part protrudes from the upper end of the lower pipe, and a retaining portion is provided so as not to be removed from the lower pipe. A connecting member, a resilient means for urging the connecting member upward and projecting an upper portion thereof from the upper end opening of the lower pipe; and depressing the connecting member against the resilient force of the resilient means to An upper portion of the lower pipe, and an abutting pressing portion that forms a lower end portion of the upper pipe; and an upper portion of the connecting member is protruded from an upper end opening of the lower pipe. By fitting in the lower end, the lower pipe and the intermediate pipe are kept in an upright state in a straight line, and the upper pipe is pushed downward with respect to the intermediate pipe to form a lower end portion of the upper pipe. Said By immersion of the upper from the upper end opening of the lower pipe by pushing down the connecting member against the resilient force of the calling means, to permit rotation of the intermediate pipe to the lower pipe It is characterized by that.
[0009]
Claim 2 The invention according to A pair of left and right lower pipes parallel to each other, a pair of left and right wheels supported by the lower ends of the pair of lower pipes, and a transport position that is tilted forward with respect to the pair of lower pipes and the lower pipe so as to overlap. The load carrying part supported in a cantilevered manner near the lower ends of the pair of lower pipes and the sleeves are formed integrally on the left and right sides, respectively, A connecting member in which a sleeve is fitted and fixed to an upper end portion of each lower pipe, a pair of left and right intermediate pipes connected to the upper end portions of the pair of lower pipes, and a sleeve are integrally formed on both left and right sides. Each of the sleeves is fitted and fixed to the upper end of each of the intermediate pipes, and the operation gripping part is slidably inserted into the upper ends of the pair of intermediate pipes. And a pair of left and right upper pipes having upper parts connected to each other and having a carrying grip part, the carrying grip part, and the intermediate pipe. On the other hand, when the upper pipe is pulled up, a locking means is provided to keep the upper pipe from being pushed down with respect to the intermediate pipe and to release the state appropriately so that the upper pipe can be pushed down with respect to the intermediate pipe. A member is formed of a lower member and an upper member that are connected to each other by a hinge. Each sleeve integrally formed on each of the left and right sides of the lower member is fitted and fixed to the upper end of each lower pipe. The sleeves integrally formed on the left and right sides of the upper member are respectively fitted and fixed to the lower ends of the intermediate pipes, The intermediate pipe is rotated between a standing position where the lower pipe and the intermediate pipe are aligned in a straight line and a folding position where the lower pipe and the intermediate pipe are overlapped with each other. The lower pipe and the intermediate pipe are kept upright in a straight line, and the engagement means is provided to allow the intermediate pipe to rotate with respect to the lower pipe by appropriately releasing the state. Carrying cart Because Said locking means The A small hole drilled on the side of the upper end of the intermediate pipe facing the other intermediate pipe, and a side of the upper pipe near the lower end of the upper pipe facing the other upper pipe. The engagement hole, the small hole of the intermediate pipe, and the engagement hole of the upper pipe can be moved in a direction perpendicular to the intermediate pipe and the upper pipe through the engagement hole and the distal end. A locking rod that engages and disengages, a guide portion that guides the locking rod in a direction orthogonal to the intermediate pipe and the upper pipe, and slidably supports the locking rod, and is coupled to the locking rod. An operating member for moving the stop rod in a direction in which the tip end portion is removed from the engaging hole of the upper pipe, and the operating member is supported so as to be movable in a direction orthogonal to the intermediate pipe and the upper pipe. Supporting means and said operation Constituting wood and the locking rod, the second resilient means for biasing the direction of engaging hole and the engaging its tip through the engaging hole of the upper pipe, Shi When the upper pipe is pulled up with respect to the intermediate pipe, the tip of the locking rod is passed through the small hole of the intermediate pipe and the engagement hole of the upper pipe to engage with the engagement hole. Thus, the upper pipe is kept from being pushed down with respect to the intermediate pipe, the operation member is operated against the elastic force of the second elastic means, and the tip of the locking rod is engaged with the upper pipe. The upper pipe can be pushed down with respect to the intermediate pipe by being removed from the hole.
[0010]
Claim 1 And claim 2 Pertaining to each In the carrying cart of the invention, when carrying a load on the load placement portion, the load placement portion is tilted forward with respect to the lower pipe and opened so that the load placement portion is substantially perpendicular to the lower pipe. The intermediate pipe is rotated from the folding position where the pipe and the intermediate pipe are overlapped, and the intermediate pipe is erected so that the lower pipe and the intermediate pipe are connected in a straight line, and then the upper pipe is pulled up with respect to the intermediate pipe. At this time, the lower pipe and the intermediate pipe are fixed in an upright state in which the lower pipe and the intermediate pipe are connected in a straight line by the engaging means, and the intermediate pipe and the upper pipe are fixed to the intermediate pipe by the locking means. The upper pipe is fixed so that it cannot be pushed down. On the other hand, when carrying without using the cart for carrying, after releasing the fixed state of the intermediate pipe and the upper pipe by the locking means, and pushing down the upper pipe with respect to the intermediate pipe, The fixed state with the intermediate pipe is released, the connecting member is bent at the hinge part, the intermediate pipe is rotated with respect to the lower pipe, the intermediate pipe is superimposed on the lower pipe, and the loading section is moved toward the lower pipe. Fold up so that the loading platform overlaps with the column.
[0011]
And claim 1 In the carrying cart according to the invention, when carrying the load, the intermediate pipe is rotated from the folding position with respect to the lower pipe, and the intermediate pipe is erected so that the lower pipe and the intermediate pipe are connected in a straight line. The upper part of the connecting member that is urged upward by the elastic means and protrudes from the upper end port of the lower pipe is fitted into the lower end part of the intermediate pipe. As a result, the lower pipe and the intermediate pipe are connected via the connecting member, and the lower pipe and the intermediate pipe are fixed in the standing state. On the other hand, when the carrying cart is not used, the upper pipe is pushed downward with respect to the intermediate pipe, and the connecting member is pressed against the elastic force of the elastic means at the abutting pressing portion forming the lower end portion of the upper pipe. When pushed down, the upper part of the connecting member is immersed from the upper end of the lower pipe, and the connection state between the lower pipe and the intermediate pipe by the connecting member is released. Accordingly, the intermediate pipe can be rotated with respect to the lower pipe, and the intermediate pipe can be superimposed on the lower pipe.
[0012]
Claim 2 In the carrying cart according to the invention, when carrying the load, when the upper pipe is pulled up with respect to the intermediate pipe, the distal end portion of the locking rod urged through the operation member by the second elastic means is The small hole of the intermediate pipe and the engagement hole of the upper pipe are passed through and engaged with the engagement hole. As a result, the upper pipe is fixed to the intermediate pipe so as not to be pushed down. On the other hand, when the operation member is operated against the elastic force of the second elastic means when the carrying cart is not used, the distal end portion of the locking rod is removed from the engagement hole of the upper pipe. Thereby, the upper pipe can be pushed down with respect to the intermediate pipe.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
[0014]
1 to 3 show an example of an embodiment of the present invention. FIG. 1 is a front view of a carrying cart, FIG. 2 is a side view thereof, and FIG. 3 is a folding view of a carrying cart. It is a side view which shows the state in the middle of going out. The carrying cart includes a pair of left and right support columns 10 and 10 that are connected to each other at the top, and a pair of left and right support members rotatably supported by an axle 12 that is fixed to the lower ends of the pair of support columns 10 and 10. In the vicinity of the lower ends of the wheels 14 and 14 and the pair of support columns 10 and 10, a load placing portion 16 that is supported in a cantilever manner and is foldable is provided.
[0015]
Each column 10 is configured by connecting three pipes, that is, a lower pipe 18, an intermediate pipe 20, and an upper pipe 22. The lower pipe 18 and the intermediate pipe 20 are connected to each other via a strip-shaped connecting member 24 in which sleeves are integrally formed on both the left and right sides. The connecting member 24 has a structure in which a lower member 24a and an upper member 24b are connected to each other by a hinge 24c, and the upper member 24b is rotatable with respect to the lower member 24a in an angle range of 180 °. . As shown in FIG. 4 which is a sectional view of a part of the support column 10 as viewed from the side (see also FIGS. 6 to 10), the sleeves 26a integrally formed on the left and right sides of the lower member 24a are respectively provided. The sleeves 26b, which are integrally formed on the left and right sides of the upper member 24b, are fitted and fixed to the lower ends of the intermediate pipes 20, respectively. . With such a structure, the intermediate pipe 20 with respect to the lower pipe 18, a standing position where both the pipes 18, 20 are connected in a straight line (position shown in FIG. 4), and a folding position where the both pipes 18, 20 overlap ( It can be rotated between (d) of FIG. 7 and (a) of FIG. 8).
[0016]
A short tubular connecting member 28 is slidably inserted into the upper end portion of the lower pipe 18 so that the upper portion protrudes from the upper end opening of the lower pipe. The upper end portion of the connecting member 28 is formed into a curved surface. Further, the lower end portion of the connecting member 28 is slightly expanded, while the vicinity of the upper end of the lower pipe 18 is processed so that the tube diameter is slightly smaller than the portion below it. The widened portion 30 at the lower end of the connecting member 28 is engaged with the stepped portion 32 of the lower pipe 18, so that the connecting member 28 is not pulled out from the lower pipe 18. A compression coil spring 34 is housed in the lower pipe 18 below the connecting member 28. The lower end portion of the compression coil spring 34 abuts on and engages with the end portion of the fixed rod 36 that is horizontally mounted and fixed between the pair of lower pipes 18 and 18 so as to penetrate the wall surfaces of the lower pipes 18 respectively. ing. The connecting member 28 is biased upward by the compression coil spring 34 so that the upper part of the connecting member 28 protrudes from the upper end opening of the lower pipe 18.
[0017]
The upper pipe 22 is slidably inserted into the upper end side of the intermediate pipe 20. The pair of left and right upper pipes 22 and 22 are connected to each other at the upper part, and the connecting part is covered with a sponge tube, and when the carrying cart is moved, the carrying grip part 38 for holding by hand. It has become. In addition, as shown in FIG. 5, which is a cross-sectional view of a part of the column 10 as seen from the front, an annular protrusion 40 is formed on a part of the outer peripheral surface near the lower end of the upper pipe 22, The upper end port of the intermediate pipe 20 is processed so as to be bent and bent inward. Then, the annular protrusion 40 of the upper pipe 22 engages with the bent portion 42 at the upper end of the intermediate pipe 20, so that the upper pipe 22 is not pulled out from the intermediate pipe 20.
[0018]
Further, the lower end portion of the upper pipe 22 is processed and formed into a curved surface to form a contact pressing portion 44. When the upper pipe 22 is pushed downward with respect to the intermediate pipe 20, as shown in FIG. 4, the abutting pressing portion 44, which forms the lower end of the upper pipe 22, is inserted into the upper end of the lower pipe 18. The contact member 28 is brought into contact with the upper end surface of the connection member 28, and the contact member 28 is pushed down against the elastic force of the compression coil spring 34 by the contact pressing portion 44, so that the upper part thereof is immersed from the upper end opening of the lower pipe 18. It is formed to such a length that can be
[0019]
At the upper ends of the pair of left and right intermediate pipes 20, 20, strip-like operation grips 46 are integrally formed with sleeves 48, 48 formed integrally on the left and right sides. 48 are respectively fitted and fixed to the upper end portions of the intermediate pipes 20. The operation gripping portion 46 is formed by bonding two plastic molding plates, and a laterally long through hole 50 formed on both sides in an arc shape is formed in the center of the operation gripping portion 46. ing. In addition, a guide groove 52 parallel to the upper side is formed in the vicinity of the upper side inside the operation gripping part 46, and the gap portion 54 is formed so as to face the arcuate edge on one side of the through hole 50. It is formed.
[0020]
Further, a small hole 56 is formed at a position corresponding to one end of the guide groove 52 on the side of the upper end portion of the intermediate pipe 20 facing the other intermediate pipe 20. Further, an engagement hole 58 is formed in the vicinity of one lower end of the upper pipe 22 on the side facing the other upper pipe 22 at a position where it overlaps with the small hole 56 of the intermediate pipe 20 as appropriate. In the guide groove 52, a locking rod 60 that is guided and slid by the guide groove 52 is accommodated. When the locking rod 60 overlaps the small hole 56 of the intermediate pipe 20 and the engagement hole 58 of the upper pipe 22, the distal end of the locking rod 60 forms the small hole 56 of the intermediate pipe 20 and the engagement hole 58 of the upper pipe 22. It can be penetrated and moved in a direction perpendicular to the pipes 20, 22, and the distal end portion of the locking rod 60 is appropriately engaged with and removed from the engagement hole 58.
[0021]
A part of the gap 54 of the operation grip 46 is exposed in the through hole 50, and an operation member 62 that is operated by placing a finger on the exposed portion is disposed. A flat arm fitting 66 is swingably connected to the operating member 62 via a crankshaft 64 fixed thereto. A long hole 68 is formed in the arm metal fitting 66, and the long hole 68 is loosely fitted to a support shaft 70 formed integrally with the operation gripping portion 46, so that the arm metal fitting 66 is supported so as to be swingable. Yes. Further, a guide support surface 72 is formed on the operation gripping portion 46 so as to be continuous with the lower side of the through hole 50. The operation member 62 is supported by the operation gripping portion 46 via the arm bracket 66 and the support shaft 70, and the lower end surface of the operation member 62 moves in a direction perpendicular to the pipes 20 and 22 while being in sliding contact with the guide support surface 72. Supported as possible. In FIG. 4, the operation member 62, the arm bracket 66, and the like are drawn with a two-dot chain line.
[0022]
Further, a compression coil spring 74 is disposed between the lower part on the rear end side of the operation member 62 and one sleeve 48, and the operation member 62 is attached forward (rightward in FIG. 5) by the compression coil spring 74. It is energized. Further, a connecting hole 76 is formed in the upper part on the front end side of the operating member 62, while the rear end portion of the locking rod 60 is bent in a hook shape, and the bent portion is a connecting hole of the operating member 62. The operating member 62 and the locking rod 60 are connected by being fitted to 76. Accordingly, the locking rod 60 is biased in a direction in which a tip end portion thereof penetrates the engagement hole 58 of the upper pipe 22 and engages with the engagement hole 58.
[0023]
When carrying a load using the carrying cart having the above-described configuration, the loading unit 16 is folded to the lower pipe 18 side, the upper pipe 22 is pushed deeply into the intermediate pipe 20, and the intermediate pipe From the state in which 20 is folded to the lower pipe 18 side (see FIG. 3), the load placing portion 16 is tilted forward with respect to the lower pipe 18 and the load placing portion 16 is opened so as to be substantially perpendicular to the lower pipe 18. Next, as shown in FIG. 6A, a cross-sectional view of a part of the column 10 viewed from the side, the intermediate pipe 20 is rotated from the folding position where the lower pipe 18 and the intermediate pipe 20 are overlapped. As shown in FIG. 7B, the upper part of the connecting member 28 that is urged upward by the compression coil spring 34 and protrudes from the upper end opening of the lower pipe 18 corresponds to the lower end of the intermediate pipe 20. Fit into the part. Then, as shown in FIG. 7C, when the intermediate pipe 20 is raised to a position where the lower pipe 18 and the intermediate pipe 20 are connected in a straight line, the upper part of the connecting member 28 is completely at the lower end of the intermediate pipe 20. Fit into. Thereby, the lower pipe 18 and the intermediate pipe 20 are connected via the connecting member 28, and the lower pipe 18 and the intermediate pipe 20 are fixed in the standing state.
[0024]
When the lower pipe 18 and the intermediate pipe 20 are fixed in an upright state, the transport grip 38 is gripped by one hand, the operation grip 46 is gripped by the other hand, and the upper pipe 22 is gripped by the intermediate pipe 20. Pull up. When the small hole 56 of the intermediate pipe 20 and the engagement hole 58 of the upper pipe 22 overlap with each other, the distal end portion of the locking rod 60 urged by the compression coil spring 74 through the operation member 62 is accompanied. However, it penetrates through the small hole 56 of the intermediate pipe 20 and the engagement hole 58 of the upper pipe 22 and engages with the engagement hole 58. Thereby, the upper pipe 22 is fixed to the intermediate pipe 20 so as not to be pushed down. Then, after the load is placed on the load placing portion 16, the load is transported by walking while holding the pulling gripping portion 38 with one hand and pulling it.
[0025]
On the other hand, when the carrying cart is not used, the operation member 62 is operated against the elastic force of the compression coil spring 74 from the state shown in FIGS. After pulling out from the engagement hole 58 of the pipe 22 and releasing the fixed state between the intermediate pipe 20 and the upper pipe 22, the carrying grip 38 is held with one hand and the upper pipe 22 is pushed down with respect to the intermediate pipe 20. Next, the thumb of one hand is hung on the carrying grip portion 38 and the middle finger, the ring finger and the little finger are hung on the upper edge portion of the through hole 50 of the manipulation gripping portion 46, and the gripping force is applied, whereby the carrying grip portion 38 is operated. Pull toward the grip 46 side. By this operation, the upper pipe 22 is pushed deeply downward into the intermediate pipe 20 as shown in FIG. The connecting member 28 is pushed down against the elastic force of the compression coil spring 34 by the abutting pressing portion 44 that forms the following. Then, as shown in FIG. 8B, the upper pipe 22 is pushed down to a position where the upper part of the connecting member 28 is recessed from the upper end of the lower pipe 18, and the lower pipe 18 and the intermediate pipe 20 are connected by the connecting member 28. Release the linked state. Subsequently, as shown in FIG. 9C, the connecting member 24 is bent at the hinge 24c and the intermediate pipe 20 is rotated with respect to the lower pipe 18, and as shown in FIG. The intermediate pipe 20 is superimposed on the pipe 18 and completely folded. Finally, the load placing part 16 is raised toward the lower pipe 18 and folded so that the load placing part 16 overlaps the lower pipe 18. Then, the carrying cart 38 is carried with the axle 12 with one hand, and the carrying cart is carried.
[0027]
【The invention's effect】
Claim 1 And claim 2 Since the carrying cart of each invention according to the present invention has a simple configuration, it is relatively easy to manufacture, there is little possibility of causing a failure, and operation reliability is high.
[Brief description of the drawings]
FIG. 1 is a front view of a carrying cart showing an example of an embodiment of the present invention.
FIG. 2 is a side view of the carrying cart shown in FIG.
3 is a side view showing a state in the middle of folding the carrying cart shown in FIG. 1. FIG.
4 is a cross-sectional view of a part of the column of the carrying cart shown in FIG. 1 as viewed from the side.
FIG. 5 is a cross-sectional view of a part of the column of the carrying cart shown in FIG. 1 as viewed from the front.
6 is a view for explaining a part of the operation when assembling the carrying cart shown in FIG. 1 from a folded state to a form for carrying a baggage, and showing a side of a part of the column of the carrying cart. It is sectional drawing seen from.
FIG. 7 is a cross-sectional view of a part of the carrying cart, as viewed from the side.
FIG. 8 is a view for explaining a part of the operation when the carrying cart shown in FIG. 1 is folded from the form at the time of carrying the baggage, and is a cross-sectional view of a part of the column of the carrying cart as viewed from the side; FIG.
FIG. 9 is a cross-sectional view of a part of a carrying cart column as seen from the side.
FIG. 10 is a cross-sectional view of a part of a carrying cart column as seen from the side.
[Explanation of symbols]
10 props
12 axles
14 wheels
16 Loading section
18 Lower pipe
20 Intermediate pipe
22 Upper pipe
24 connecting members
24a Lower member
24b Upper member
24c hinge
26a, 26b Connecting member sleeve
28 Connecting members
30 Expanding part of connecting member
32 Stepped part of the lower pipe
34, 74 Compression coil spring
36 fixed rod
38 Carrying grip
40 Annular projection
42 Bend at the upper end of the intermediate pipe
44 Contact pressing part
46 Grip for operation
48 Sleeve for operation grip
50 through holes
52 Guide groove
54 Cavity
56 Small hole
58 engagement hole
60 Locking rod
62 Operation members
66 Arm Bracket
72 Guide support surface
76 Connecting hole

Claims (2)

A pair of left and right lower pipes parallel to each other;
A pair of left and right wheels supported by the lower ends of the pair of lower pipes;
Cantilevered near the lower end of the pair of lower pipes so as to rotate between the transported position tilted forward with respect to the pair of lower pipes and the portable position caused to overlap with the lower pipe A loading section supported by
A connecting member in which sleeves are integrally formed on both the left and right sides, and each sleeve is fitted and fixed to the upper end of each lower pipe, and
A pair of left and right intermediate pipes connected to the upper ends of the pair of lower pipes;
Sleeves are integrally formed on each of the left and right sides, and each sleeve is fitted and secured to the upper end of each intermediate pipe,
A pair of left and right upper pipes slidably fitted on the upper ends of the pair of intermediate pipes, provided with retaining portions so as not to be detached from the intermediate pipes, and having upper parts connected to each other and having conveyance gripping parts; ,
A carrying cart equipped with
When the upper pipe is pulled up with respect to the intermediate pipe, the operation pipe is kept in a state where the upper pipe is not pushed down with respect to the intermediate pipe, and the state is appropriately released to push down the upper pipe with respect to the intermediate pipe. Provided with locking means to enable,
The connecting member is formed of a lower member and an upper member which are connected to each other by a hinge, and respective sleeves integrally formed on the left and right sides of the lower member are respectively fitted on the upper end portions of the lower pipes. The sleeves integrally formed on the left and right sides of the upper member are respectively fitted and fixed to the lower ends of the intermediate pipes, and the intermediate pipe is connected to the lower pipe and the lower pipe and the intermediate pipe. Rotate between a standing position that is continuous with the straight line and a folding position where the lower pipe and the intermediate pipe overlap,
A connecting member that is slidably fitted into the upper end of the lower pipe so that the upper part protrudes from the upper end of the lower pipe, and a retaining member is provided so as not to be removed from the lower pipe, and the connecting member A resilient means for urging the top upward from the upper end of the lower pipe, and pushing down the connecting member against the resilient force of the resilient means so that the upper part is above the lower pipe. An abutting and pressing portion that forms a lower end portion of the upper pipe, and is inserted into the lower end portion of the intermediate pipe by projecting the upper portion of the connecting member from the upper end opening of the lower pipe. , Chi holding the upright state and the lower pipe and the intermediate pipe is connected to a straight line, pushing down the upper pipe relative to the intermediate pipe, the bullet of the resilient means abutting a pressing portion which forms the lower end of the upper pipe Force By immersion of the upper from the upper end opening of the lower pipe depress the anti to the coupling member, the lower pipe and the intermediate engagement means allowing rotation of the intermediate pipe to the lower pipe by releasing the upright appropriately Carrying cart characterized by being installed on a pipe . A pair of left and right lower pipes parallel to each other;
A pair of left and right wheels supported by the lower ends of the pair of lower pipes;
Cantilevered near the lower end of the pair of lower pipes so as to rotate between the transported position tilted forward with respect to the pair of lower pipes and the portable position caused to overlap with the lower pipe A loading section supported by
A connecting member in which sleeves are integrally formed on both the left and right sides, and each sleeve is fitted and fixed to the upper end of each lower pipe, and
A pair of left and right intermediate pipes connected to the upper ends of the pair of lower pipes;
Sleeves are integrally formed on each of the left and right sides, and each sleeve is fitted and secured to the upper end of each intermediate pipe,
A pair of left and right upper pipes slidably fitted on the upper ends of the pair of intermediate pipes, provided with retaining portions so as not to be detached from the intermediate pipes, and having upper parts connected to each other and having conveyance gripping parts; ,
A carrying cart equipped with
A small hole drilled on the side facing the other intermediate pipe of one upper end of the intermediate pipe, and a side facing the other upper pipe near the lower end of one of the upper pipes An engaging hole, a small hole of the intermediate pipe, and an engaging hole of the upper pipe can be moved in a direction perpendicular to the intermediate pipe and the upper pipe through the engaging hole. A locking rod that is joined and removed, a guide portion that guides the locking rod in a direction orthogonal to the intermediate pipe and the upper pipe, and slidably supports the locking rod, and is connected to the locking rod and locked. An operation member for moving the rod in a direction in which the tip end portion is removed from the engagement hole of the upper pipe, and a support for supporting the operation member so as to be movable in a direction orthogonal to the intermediate pipe and the upper pipe Means and the operation unit And a second resilient means for urging the locking rod in a direction in which a tip end portion thereof penetrates the engagement hole of the upper pipe and engages with the engagement hole. On the other hand, when the upper pipe is pulled up, the tip of the locking rod is passed through the small hole of the intermediate pipe and the engagement hole of the upper pipe to engage with the engagement hole. On the other hand, the upper pipe is kept in a state where it is not pushed down, and the operation member is operated against the elastic force of the second elastic means to remove the tip of the locking rod from the engagement hole of the upper pipe. Accordingly, the operation gripping portion is provided with a locking means that allows the upper pipe to be pushed down with respect to the intermediate pipe by appropriately releasing the state .
The connecting member is formed of a lower member and an upper member which are connected to each other by a hinge, and respective sleeves integrally formed on the left and right sides of the lower member are respectively fitted on the upper end portions of the lower pipes. The sleeves integrally formed on the left and right sides of the upper member are respectively fitted and fixed to the lower ends of the intermediate pipes, and the intermediate pipe is connected to the lower pipe and the lower pipe and the intermediate pipe. Rotate between a standing position that is continuous with the straight line and a folding position where the lower pipe and the intermediate pipe overlap,
The lower pipe and the intermediate pipe are provided with an engaging means that keeps the lower pipe and the intermediate pipe standing in a straight line and releases the state as appropriate to enable the rotation of the intermediate pipe relative to the lower pipe. Carrying cart characterized by that .

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