JP6646127B1 - Collapsible wheelbarrow frame - Google Patents

Abstract

An object of the present invention is to provide a foldable wheelbarrow frame. A foldable wheelbarrow frame includes a pair of main frames, a push rod, a pair of first transmission mechanisms, a pair of rear frames, and a pair of second frames. , A chair frame 60, a fixing device 70, a corresponding device 70 ', a first movable rod group 80, and a second movable rod group 80'. The pair of main frames 10 are provided at symmetrical positions and have a first end 11 and a second end 12, respectively. Between the first end 11 and the second end 12, a first connection portion 13 and a second connection portion 15 are included in this order. The push rods 20 are respectively connected to the first ends 11 of the pair of main frames 10. The pair of first transmission mechanisms 30 are respectively connected to the second ends 12 of the pair of main frames 10. The pair of rear frames 40 are pivotally connected to the first connection portions 13 of the pair of main frames 10 so as to be pivotable. [Selection diagram] Fig. 1

Description

  The present invention relates to a wheelbarrow frame, and more particularly to a collapsible wheelbarrow frame.

  A wheelbarrow is used to assist a sick person, the aged, an infant, and the like with disabilities to move. However, since the wheelbarrow needs a space for a person with a physical disability as described above, the whole volume becomes large and occupies a large space even when no one is sitting.

  Therefore, the conventional wheelbarrow frame is generally designed to have a foldable structure so that the space occupied by the wheelbarrow when no one is sitting can be reduced.

  In general, a collapsible frame cannot be fixed when using a wheelbarrow (ie, when it is in an open state) and can be moved when using a chair ( That is, since the user is in a raised state (a state in which the user is not placed flat) even when the user is sitting down, there is a possibility that the user may be injured when sitting down.

  The problem of the present invention is that when a wheelbarrow is used conventionally (that is, when it is in an open state), the chair cannot be fixed and can be moved, so that the user is injured when sitting down. It is an object of the present invention to provide a foldable wheelbarrow frame, which prevents the wobble from occurring.

  According to a first aspect of the present invention, a pair of main frames, a push rod, a pair of first transmission mechanisms, a pair of rear frames, and a pair of main frames are provided. A collapsible wheelbarrow frame including a second transmission mechanism, a chair frame, a fixing device, a corresponding device, a first movable rod group, and a second movable rod group, wherein The pair of main frames are provided at symmetrical positions, have a first end and a second end, respectively, and a first end and a second end are provided between the first end and the second end. One connection part and a second connection part are included in this order, the push rods are respectively connected to the first ends of the pair of main frames, and the pair of first transmission mechanisms are: Each of the pair of main frames is connected to the second end of the pair of main frames, and the pair of rear frames is The pair of main frames are pivotally connected to the first connection portions, the pair of second transmission mechanisms are respectively connected to the pair of rear frames, and the chair frame is connected to the pair of main frames. Pivotally connected to the first connection portion of the main frame of the main frame, the fixing device comprises: the chair frame and one of the main frames when the collapsible wheelbarrow frame is in an open state. And the corresponding device is positioned between the chair frame and the other main frame when the collapsible wheelbarrow frame is in an open state. The first movable rod group and the second movable rod group are connected to the pair of main frames and the pair of rear frames, respectively. To provide a wheelbarrow frame.

  The fixing device preferably includes a rotating shaft, a pressing member connected to the rotating shaft and having a pressing end and a fixed end at both ends, and a pin attached to the fixed end.

  The fixing device is fixed to the chair frame, and a fixing hole is formed between the first end and the second end of one of the pair of main frames, It is preferable that the pin is movably inserted into the fixing hole.

  The fixing device has a first projection and a second projection corresponding to each other, and the first projection and the second projection are provided near the pressing end, and the first projection and the second projection are arranged near the pressing end. Preferably, an elastic member is connected to the second protrusion.

  The first movable rod group includes a first movable rod, a second movable rod, and a third movable rod, and the first movable rod, the second movable rod, and the third movable rod are provided. Has one end pivotally connected to the other end, the other end of the second connection part of one of the pair of main frames, one of the pair of rear frames, and the fixing device. Respectively, and the second movable rod group has a fourth movable rod, a fifth movable rod, and a sixth movable rod, and the fourth movable rod, the fifth movable rod, and the The sixth movable rod has one end pivotally connected to the other end and the other end connected to the other second connection portion of one of the pair of main frames and the other of the pair of rear frames. It is preferable to be connected to the other and the corresponding device, respectively.

The collapsible wheelbarrow frame of the present invention includes a fixing device, and when the wheelbarrow frame is in an open state, the chair frame can be fixed, and the chair is fixed and does not move. Can prevent injuries when sitting.

It is a perspective view showing the state where the foldable wheelbarrow frame concerning one embodiment of the present invention was opened. It is a side view showing the state where the foldable wheelbarrow frame concerning one embodiment of the present invention was closed. FIG. 3 is a cross-sectional view illustrating the main frame and the fixing device when the foldable wheelbarrow frame according to the embodiment of the present invention is open. It is sectional drawing which shows the main frame of the foldable wheelbarrow frame which concerns on one Embodiment of this invention, and the fixing device pressed.

  Hereinafter, specific embodiments will be described in detail with reference to the drawings in order to make the objects, features, and effects of the present invention easier to understand.

Please refer to FIG. FIG. 1 is a perspective view showing a state in which a foldable wheelbarrow frame according to an embodiment of the present invention is opened (that is, a state where a user can sit down). As shown in FIG. 1, the collapsible wheelbarrow frame 100 includes at least one pair of a main frame 10, a push rod 20, a pair of first transmission mechanisms 30, a pair of rear frames 40, a second transmission mechanism 50 pairs, the chair frame 60, a fixing device 70 of the pair, a first movable rod group 80, a second movable rod group 80 ', formed by composed.

In the present embodiment, the pair of main frames 10 are provided at symmetric positions. Each main frame 10 has a first end 11 and a second end 12. Between the first end 11 and the second end 12, a first connection portion 13 and a second connection portion 15 are included in this order. The push rod 20 is connected to the first ends 11 of the pair of main frames 10 to form a space where a person pushing the wheelbarrow exerts a force. The pair of first transmission mechanisms 30 are connected to the second ends 12 of the pair of main frames 10. The pair of first transmission mechanisms 30 is a wheel or a group of wheels shown in FIG. The pair of rear frames 40 may be rotatably connected to the first connection portions 13 of the pair of main frames 10. The pair of second transmission mechanisms 50 are connected to the pair of rear frames 40. The second transmission mechanism 50 may be the wheels shown in FIG. 1, and the first transmission mechanism 30 may be a wheel group.

Further, the chair frame 60 may be pivotally connected to the first connection portions 13 of the pair of main frames 10 so as to be pivotable. For example, the seat may be fixed to the chair frame 60 to form a space where the user can sit. The pair of fixing devices 70 are provided at symmetric positions. A pair of fixing device 70, when in the state in which the push chair frame 100 foldable opened (shown in Figure 1), and a chair frame 60, respectively positioned between the main frame 10, a chair frame 60 Is fixed. Hereinafter, the embodiment will be described in detail .

The first movable rod group 80 and the second movable rod group 80 'are connected to a pair of main frames 10 and a pair of rear frames 40, respectively. As shown in FIG. 1, the first movable rod group 80 of the present embodiment includes a first movable rod 81, a second movable rod 82, and a third movable rod 83. One end of each of the first movable rod 81, the second movable rod 82, and the third movable rod 83 is pivotally connected to be rotatable, and the other end is a second connection of one of the pair of main frames 10. Part 15, one of the pair of rear frames 40 and one of the fixing devices 7
The collapsible wheelbarrow frame 100, each connected to a zero, can be folded to reduce the space it occupies when no one is sitting. Further, as shown in FIG. 1, the second movable rod group 80 'of the present embodiment includes a fourth movable rod 81', a fifth movable rod 82 ', and a sixth movable rod 83'. One end of the fourth movable rod 81 ′, the fifth movable rod 82 ′, and the sixth movable rod 83 ′ is rotatably connected to one end, and the other end is the other of one of the pair of main frames 10. Of the pair of rear frames 40, and the other fixing device 70 , respectively.

In the present embodiment, the pair of fixing devices 70 can fix the chair frame 60 when the foldable wheelbarrow frame 100 is in an open state (shown in FIG. 1), and the chair is fixed. Since the user does not move, it is possible to prevent the user from being injured when sitting.

  Please refer to FIG. FIG. 2 is a side view showing a state in which the foldable trolley frame according to the embodiment of the present invention is closed. FIG. 3 is a sectional view showing the main frame and the fixing device when the foldable trolley frame according to the embodiment of the present invention is opened. FIG. 4 is a cross-sectional view showing a main frame of a foldable wheelbarrow frame and a pressed fixing device according to an embodiment of the present invention.

As shown in FIGS. 3 and 4, the fixing device 70 for a foldable wheelbarrow frame according to an embodiment of the present invention includes a rotating shaft 71, a pressing member 73 , a guide cover 76, and a pin 75. The pressing member 73 is connected to the rotating shaft 71 and has a pressing end 731 and a fixed end 733 at both ends. The pin 75 is attached to the fixed end 733. The guide cover 76 extends from the pressing member 73 and has an opening facing the main frame 10.

Please refer to FIG. As shown in FIGS. 1 to 4, the fixing device 70 of the present embodiment is fixed to the chair frame 60, and has a first end 11 and a second end 12 of one of the main frames 10. A fixing hole 17 is formed between them, and a pin 75 of a fixing device 70 is movably inserted into the fixing hole 17 of the main frame 10. When using the foldable wheelbarrow frame 100 (ie, when the foldable wheelbarrow frame 100 is open), the pins 75 of the fixing device 70 are inserted into the fixing holes 17 of one of the main frames 10. Once installed, the chair is locked to the chair frame 60, so that the chair is fixed and does not move.

  When the foldable wheelbarrow frame 100 is not used (that is, when the foldable wheelbarrow frame 100 is folded), when the pressing end 731 of the pressing member 73 of the fixing device 70 is pressed, as shown in FIG. Is disengaged from one of the fixing holes 17 of the main frame 10 and the foldable wheelbarrow frame 100 is folded, as shown in FIG.

  The fixing device 70 of the present embodiment further includes a first projection 77, a second projection 78, and an elastic member 79 corresponding to each other. The first projection 77 and the second projection 78 are provided near the pressing end 731. An elastic member 79 is connected to the first projection 77 and the second projection 78. For example, the elastic member 79 is a spring. When the pressing member 73 of the fixing device 70 is not pressed, the fixing device 70 automatically recovers from the state shown in FIG. 4 to the state shown in FIG. 3 by the elasticity of the spring.

  Here, the position and the structure of the fixing device 70 of the present invention are not limited to only the embodiment shown in FIGS. 1 to 4, and in other embodiments, the fixing device 70 is also chair frame by another method. The chair frame 60 may be fixed with the foldable wheelbarrow frame 100 open (shown in FIG. 1), thereby preventing the user from being injured when sitting down. Can be.

  As can be seen from the foregoing, the collapsible trolley frame 100 of the present invention includes a securing device 70. The fixing device 70 can fix the chair frame 60 when the foldable wheelbarrow frame 100 is in an open state, and the chair is fixed and does not move, so that when the user sits down. Injury can be prevented.

  While preferred embodiments of the present invention have been disclosed above, as by those skilled in the art, they are not intended to limit the invention in any way. Various changes and modifications can be made without departing from the spirit and scope of the present invention. Therefore, the scope of the appended claims should be construed broadly including such changes and modifications.

Reference Signs List 10 Main frame 11 First end 12 Second end 13 First connection 15 Second connection 17 Fixing hole 20 Push rod 30 First transmission mechanism 40 Rear frame 50 Second transmission mechanism 60 Chair Frame 70 fixing device
7 1 Rotating shaft 73 Pressing member 75 Pin
76 guide covering portion 77 first protrusion 78 second protrusion 79 elastic member 80 first movable rod group 80 'second movable rod group 81 first movable rod 81' fourth movable rod 82 second movable Rod 82 ′ Fifth movable rod 83 Third movable rod 83 ′ Sixth movable rod 100 Foldable handcart frame 731 Pressing end 733 Fixed end

Claims (2)

A pair of main frame, a push rod, a first transmission mechanism of a pair, and the frame after the pair, and a second transmission mechanism of a pair, and a chair frame, a pair of fixing devices, the A collapsible wheelbarrow frame comprising one movable rod group and a second movable rod group,
The pair of main frames are provided at symmetrical positions, have a first end and a second end, respectively, and are provided between the first end and the second end. , A first connection and a second connection are included in this order,
The push rods are respectively connected to the first ends of the pair of main frames,
The pair of first transmission mechanisms are respectively connected to the second ends of the pair of mainframes,
The pair of rear frames are pivotally connected to the first connection portions of the pair of main frames, and
The pair of second transmission mechanisms are respectively connected to the pair of subsequent frames;
The chair frame is pivotably connected to the first connection portion of the pair of main frames;
The pair of fixing devices are provided at symmetrical positions, the pair of fixing devices are fixed to the chair frame, and the pair of fixing devices are arranged such that the collapsible wheelbarrow frame is opened. on one occasion, with the chair frame, respectively located between the front Symbol pair of main frame fixed to the chair frame,
The first movable rod group includes a first movable rod, a second movable rod, and a third movable rod, and the first movable rod, the second movable rod, and the third movable rod are provided. Has one end pivotally connected and the other end connected to the second connection part of one of the pair of main frames, one of the pair of rear frames, and the pair of main frames. Respectively connected to one of the fixing devices,
The second movable rod group includes a fourth movable rod, a fifth movable rod, and a sixth movable rod, and the fourth movable rod, the fifth movable rod, and the sixth movable rod are provided. Is
One end is pivotally connected to each other, and the other end is the second connection part of the other of the pair of main frames, the other of the pair of rear frames, and the one pair of the main frames. Respectively connected to the other of the fixing devices of
At least one of the fixing devices is connected to the rotating shaft, a pressing member connected to the rotating shaft and having a pressing end and a fixed end at both ends, a pin attached to the fixed end, and extending from the pressing member, And a guide covering portion having an opening facing the frame,
A fixing hole corresponding to the position of the pin is formed between the first end and the second end of the pair of main frames, and the pin is movable in the fixing hole. A foldable wheelbarrow frame, which is inserted into the trolley . The fixing device has a first projection and a second projection corresponding to each other,
The first protrusion and the second protrusion are provided near the pressing end,
The foldable wheelbarrow frame according to claim 1 , wherein an elastic member is connected to the first protrusion and the second protrusion.

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