JP3750104B2 - Shopping wheelbarrow with seat - Google Patents

Description

[0001]
[Technical Field]
The present invention relates to a shopping cart, and more particularly to a shopping cart that can be folded down to the size of a shopping bag.
[0002]
[Prior art]
Recent young people prefer smarter wheelbarrows for shopping rather than silver cars, and this is gaining popularity. There are two or three small wheelbarrows for shopping, but the four-wheeled wheelbarrow is superior in terms of stability.
[0003]
However, the biggest drawback of conventional four-wheel shopping carts is that they do not become smaller when folded. Of course, there are also conventional ones that can be folded by bringing the front and rear wheels closer together or by narrowing the front and rear wheels. However, these conventional ones cannot reduce the height when folded to the size of the bag. In this regard, the shopping cart disclosed in Japanese Utility Model Publication No. 4-38879 can be folded to the size of a carry light, but the distance between the axles is narrow and cannot be pushed only by pulling. Have the disadvantage of falling. On the other hand, the handcart disclosed in JP-A-64-36565 can be pushed, but cannot be folded with a large amount of luggage.
[0004]
As prior arts in which the wheels are raised to the position of the bag in order to reduce the height when folded, those disclosed in Japanese Patent Laid-Open Nos. 3-16875 and 4-252770 are disclosed. is there. However, what is disclosed in Japanese Patent Laid-Open No. 3-16875 relates to a luggage carrier when a base extended with two wheels is folded. Therefore, it cannot be applied to a shopping cart with a bag as in the present invention. Japanese Patent Application Laid-Open No. 4-252770 discloses a baby carriage and a folding mechanism used therein. However, since it is a mechanism that folds the front and rear wheels together, it cannot be applied to the shopping cart of the present invention. Absent.
[0005]
That is, although the shopping cart is configured so that the bag can be attached and detached, there are many people who actually take care of the removal. Therefore, when a handcart is brought into a train or the like with a bag filled with a large amount of luggage after shopping, the main body of the wheelbarrow can be folded to the same size as the bag. In spite of the demand for a thing that does not tip over before being pushed, a shopping cart with a bag that fulfills such a purpose has not been proposed.
[0006]
[Problems to be solved by the invention]
In view of the above circumstances, the present invention allows a bag to be folded to a size almost the same as a bag while a large amount of luggage is put in the bag, and enables traveling by wheels in that state. An object of the present invention is to provide a shopping cart with a bag having a seat that can be stably pushed by increasing the interval of the bag.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a front leg rod having a U-shaped overall shape, a U-shaped handle rod attached to the front leg pivotally by a pivot pin 3c, and the front leg collar. And supporting members attached to both sides of the
A rear leg rod is pivotally attached to the support member, and a rear wheel support portion is attached to a lower end portion of the rear leg rod so as to be slidable and rotatable in an axial direction, and a rear wheel is attached to the rear wheel support portion. And
A front wheel support portion is attached to the lower end portion of the front leg rod so as to slide and rotate in the axial direction, and the front wheel is attached to the front wheel support portion,
An intermediate rod is pivotally attached to the lower end of the handle rod by a shaft, a long hole is formed in the lower end of the intermediate rod, and a pin provided on the rear rod is movable in the vertical direction in the long hole. Engaged, a roller is attached to the rear rod, and the roller is formed in the rear wheel support portion and is inserted into a rear wheel turning groove configured to turn 90 ° between the upper end and the lower end,
The front rod is pivotally attached to the front end of the rear rod by a pin, and a roller is attached to the front rod. The front wheel is formed on the front wheel support portion and rotates 90 ° while reaching the lower end from the upper end. Inserted in the turning groove,
A pair of actuating rods are pivotally supported on the lower end of the handle bar, and the actuating rods are pivotally attached to the front wheel support member and the rear wheel support member and pivotally support the handle bar. The front wheel and the rear wheel are configured to rotate 90 ° inward due to a relative position variation between the roller and the turning groove when folded around the pin.
A shopping cart having a seat, wherein a brake rod is provided along the inside of the handle rod and is rotated in a direction approaching the handle rod via a Bowden wire to brake the wheel. The vehicle is configured as a means for solving problems.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the shopping cart of the present invention will be described in detail with reference to the drawings. 1 is a perspective view showing a use state of a shopping cart according to an embodiment of the present invention, FIG. 2 is a perspective view showing a use state in which the seat is folded, FIG. 3 is an enlarged view of the handle portion, and FIG. Is an enlarged perspective view of the front wheel portion, FIG. 5 is a side view of the main wheel portion, FIG. 6 is a perspective view of the front wheel support member, FIG. 7 is a perspective view of the lock lever 2B of the brake rod 1, and FIG. FIG. 9 and FIG. 10 are side views showing the operation of the lock lever of the handle rod, and FIG. 11 is a perspective view showing the folding procedure.
[0009]
As shown in FIG. 1, the shopping cart of this embodiment is provided with a handle bar 2 at the top thereof. The handle bar 2 is formed in a U-shape as a whole by a horizontal handle base portion 2a and portions 2b that are smoothly bent vertically downward from both ends thereof. A part of the horizontal handle base part 2a and the vertically bent part 2b (the main part of the handle bar) serving as a handle are made of a hard synthetic resin, and the end part of the vertically bent part 2b. 2c is formed of a metal pipe, and the main body is movable in the vertical direction with respect to the end 2c. As shown in FIG. 3, three holes 2d are provided in a portion 2b bent vertically with a hard synthetic resin, while a button that can be fitted into the hole 2d is provided on an end 2c made of a metal pipe. It is provided in a state of being biased outward by a spring (not shown), and by moving the main body up and down while pushing the button and fitting the button into the hole 2d of a desired height, 2 can be set to a desired height position.
[0010]
The lower end 2c of the vertical part 2b of the handle bar 2 has a horizontal part 3a and a part 3b smoothly bent downward from both ends of the front part to form a U-shaped overall shape. 3 is rotatably attached to the upper end portion of the vertical portion by a pivot pin 3c. An elastic grip 3d is attached to the center of the horizontal portion 3a. A support member 4 made of synthetic resin is attached to a substantially central portion of the vertical portion 3b of the front leg rod 3. A seat support frame 5 having a U-shape in plan view is rotatably supported by a pin 5a at the front portion of the support member 4. U-shaped supports 6 are attached to both sides of the front end portion of the seat support frame 5 so as to be pivotable downward by pins 6c. The lower horizontal portion 6a of the U-shaped support 6 acts so as to contact the floor surface or the like and support the load on the seat when the seat shown in FIG. 1 is used. Reference numeral 6b denotes an anti-slip member attached to the lower horizontal portion 6a. A seat 40 is mounted on the seat support frame 5 (see FIG. 5).
[0011]
A front wheel support member 7 is attached to each lower end portion of the vertical portion 3b on both sides of the front leg rod 3 so as to be slidable and rotatable in the axial direction, and each front wheel support member 7 has a pair of front wheels. Eight support arms 8a are attached. Furthermore, a pair of left and right rear leg rods 10 are attached to the rear portions of the support members 4 so that the upper portions thereof can be rotated by pivot pins 10c. A rear wheel support member 11 is attached to the lower end portion of each rear leg rod 10 so as to be able to slide and rotate in the axial direction, and a support arm 12a of the rear wheel 12 is attached to each rear wheel support member 11. ing. The front wheel 8 and the rear wheel 12 have caster structures attached to the front wheel support member 7 and the rear wheel support member 11 via the support arm 8a and the support arm 12a, respectively, and can be returned straight by 45 °.
[0012]
A substantially identical brake rod 1 is provided along the inside of the U-shaped portion of the handle rod 2. The brake rod 1 has both vertical portions 1b attached to a bracket 2A protruding from both vertical portions 2a of the handle rod 2 by pins 1c. Further, a lock lever-2B (see FIG. 7) for engaging the horizontal portion 1a of the brake rod 1 and maintaining the brake rod 1 in a brake state in the horizontal portion 2a of the handle rod 2 is rotatable. Is provided.
[0013]
At both vertical portions 1b of the brake rod 1, upper ends of Bowden wires 1A for operating brake devices 21 (see FIG. 4) provided on the front wheels 8 and the rear wheels 12 are attached. Therefore, when the brake rod 1 is rotated in the direction approaching the handle rod 2, the brakes are applied to the wheels 8, 12. When the lock lever 2B is rotated in this state to lock the brake rod 1, the brake state is maintained, that is, the parking brake function is exhibited.
[0014]
The upper end portion of the intermediate rod 13 is attached to the lower end portion of the handle rod 2 so as to be rotatable by a shaft 2e. A long hole 13a is formed at the lower end portion of the intermediate rod 13, and a pin 14a provided at the front end of the rear rod 14 is engaged with the long hole 13a so as to be movable in the vertical direction. A roller 22 is attached to the rear end portion of the rear rod 14, and this roller 22 is fitted in a groove 11 a for turning the rear wheel formed on the inner surface of the rear wheel support portion 11. The left and right rollers 22 are connected by a rear wheel support rod 17 so that the left and right rollers 22 can move simultaneously. A part of the bag 30 is wound around the rear wheel support rod 17 (this will be described later). The groove 11a is formed in a shape that turns 90 ° between the upper end and the lower end. Therefore, when the rear rod 14 is moved from the upper end portion to the lower end portion of the groove 11 a, the rear wheel support portion 11 rotates 90 ° with respect to the rear leg rod 10 together with the rear wheel 12.
[0015]
The rear end of the front rod 15 is pivotally attached to the front end of the rear rod 14 by a pin 15a, and a roller 27 (similar to the roller 22 described above) is attached to the front end of the front rod 15. Reference numeral 27 denotes a front wheel turning groove 7 a formed on the inner surface of the front wheel support portion 7. The left and right rollers are connected by a front wheel support rod 16 so that the left and right rollers can move simultaneously.
[0016]
Further, the rear end portion of the support rod 18 is pivotally attached to the front end portion of the front rod 15 coaxially with the roller 27, and the front end portion of the support rod 18 is pivotally attached to the support body 6.
A pair of operating rods 28 and 29 are pivotally supported by the shaft 2e at the lower end of the handle bar 2. As shown in FIG. 6, the lower end portion of the actuating rod 28 is configured so that a large-diameter portion 28 a formed at the lower end portion is embedded in the front wheel support member 7 so as to be rotatable (front wheel support member 7). ing. The lower end portion of the operating rod 29 is also rotatably attached to the rear wheel support member 11 with the same configuration.
[0017]
Needless to say, a pair of the link mechanisms including the intermediate rod 13, the rear rod 14, the front rod 15, the support rod 18, and the pair of operating rods 28 and 29 are provided on the left and right of the shopping cart. It is also clear that the left and right link mechanisms are formed to be movable in the vertical direction at the same time.
[0018]
The link mechanism operates as follows. That is, in order to change the handle 杆 2 from the use state shown in FIG. 1 (the handle 杆 2 is in an upright state) to the folded state shown in FIG. When rotating in the direction (indicated by an arrow X in FIG. 5), the intermediate rod 13 is pulled up, and in conjunction with this, the rear rod 14 is pulled up on its inner end side, and the rear wheel support member 11 is centered on the pin 10c. Rotate clockwise. At the same time, the operating rod 29 is also lifted upward, so that the rear wheel support member 11 is moved upward by this movement of the operating rod 29.
[0019]
When the rear wheel support member 11 performs such movement (clockwise rotation by the rear rod 14 and upward movement by the operation rod 29), the positional relationship between the roller 22 and the groove 11a also changes relatively. The relative change is substantially a mode in which the roller 22 moves relatively downward along the groove 11a, whereby the rear wheel 12 finally rotates 90 °. At the same time, the actuating rod 28 is also lifted upward and acts in the same manner, so that the roller 27 moves downward along the groove 7a, whereby the front wheel 8 finally turns 90 °.
[0020]
In order to maintain the handle bar 2 in the use state shown in FIG. 1, that is, the handle bar 2 in an upright state, a lock lever 23 is attached to the upper end of the rear leg bar 3, and the lock lever 23 is attached to the handle bar 2. A lock pin 24 that can be engaged with the lock pin 24 is provided. The lock lever 23 and the lock pin 24 are provided on both sides of the shopping cart, and the lock levers 23 on both sides are connected by a lock shaft 25 so as to rotate in conjunction with each other.
[0021]
The bag 30 includes a cloth storage portion 31 and a lid cloth 32. The storage portion 31 has an upper end portion removably supported by the lock shaft 25 and a lower end portion removably supported by the rear wheel support rod 17. The lid cloth 32 is detachably attached at its base end to the rear edge of the upper edge of the storage part 31 and passes through the gap between the horizontal part 3 a of the rear leg 3 and the upper edge of the storage part 31. It hangs down in the front-down direction while covering the upper opening (see FIG. 2). In the seat use state, the hanging portion 32a of the lid cloth 32 covers the upper surface of the seat 40 as shown in FIG.
[0022]
Next, the folding procedure of the shopping cart of this embodiment will be described.
From the state of use shown in FIG. 1, first, the front surface of the seat 40 is rotated upward and rearward, and the seat 40 is folded to a contact position on the front surface of the storage portion of the bag 30. At the same time, the support 6 is also folded along the support frame 5.
[0023]
Next, the lock lever 23 is rotated to unlock the handle bar 2. After unlocking the handle rod 2, the huddle rod 2 is rotated forward (counterclockwise in FIG. 1) until the handle rod 2 reaches the lowest position shown in FIG. FIG. 11 shows a method for operating the handle bar 2, and an arrow B in FIG. 11 shows the rotation direction of the handle bar 2. At this time, it is desirable to perform the above operation with the grip 3d of the front leg 3 with one hand. As a result of this operation, as described above, the front leg rod 3 and the rear leg rod 10 enter the wheel support portions 7 and 11, respectively, their substantial lengths are reduced, and the front wheel 8 and the rear wheel 11 are each rotated by 90 °. Then, the state shown in FIG. 8, that is, the wheels arranged in the front-rear direction rotate in a state of facing each other, and all the wheels do not protrude from the lateral width of the shopping cart wheel 30. As a result, in the folded state, the height and width of the shopping cart can be reduced, that is, the whole can be made compact and easy to carry. Further, since the wheels do not protrude from the lateral width of the shopping cart wheel 30, there is no risk of clothes being worn by the wheels when held, and this does not hinder the carrying of the train into a vehicle. In this state, the shopping cart can also be moved in the horizontal direction using all the wheels.
[0024]
As shown in FIG. 8, in this folded state, the grip 3d of the front leg 3 is positioned at the top, and the front wheel 8 and the rear wheel 11 face in a direction suitable for moving the shopping cart. Therefore, the shopping cart can be moved in the horizontal direction with the grip 3d. It is also possible to carry a shopping cart by holding the grip 3d. At this time, there is no problem even if an article is stored in the bag 30. In this folded state, the handle bar 2 is rotated approximately 180 ° downward about the pivot pin 3c and the substantial lengths of the front leg bar 3 and the rear leg bar 10 are reduced. The height is extremely low, and the shape and dimensions are convenient for transportation.
[0025]
To open from the folded state shown in FIG. 8 to the used state, the handle bar 2 is rotated in the direction of arrow A in FIG. At this time, it is desirable to perform the above operation with the grip 3d of the front leg 3 with one hand. After the handle bar 2 is rotated to the upright state (the state shown in FIG. 2), the lock lever 23 is rotated to lock the handle bar 2.
[0026]
The bag 30 attached to the shopping cart is provided with a plunging tongue (not shown) so that the upper end can be attached to the shopping cart lock shaft 25 and the lower end can be attached to the rear wheel support rod 17. It is attached. When the bag 30 is folded, it is preferable to apply a hard member to the bottom surface or the like so as not to lose its shape. The bag 30 has a removable lid cloth 31 that can be attached and detached on the front upper portion, so that the user can shop with the bag 30 attached to the shopping cart.
[0027]
【The invention's effect】
The shopping cart of the present invention can be folded into a compact size convenient for carrying by a simple operation of rotating the steering wheel １８０ approximately 180 °, and the shopping cart shown in FIG. Since it can be returned to the use state only by rotating about 180 °, it is excellent in practicality.
[0028]
When the shopping handcart of the present invention is folded, the front leg hook and the rear leg hook 10 enter the wheel support portions, respectively, their substantial lengths are reduced, and the front wheel and the rear wheel 11 are rotated by 90 °, respectively. Then, the state shown in FIG. 8, that is, the wheels arranged in the front-rear direction rotate in a state of facing each other, and all the wheels do not protrude from the lateral width of the shopping cart wheel 30. . As a result, in this folded state, the height and width of the shopping cart can be reduced, and the entire shopping cart can be made compact and easy to carry. In addition, since the wheels do not protrude from the width of the shopping cart wheel 30, there is no risk of clothes being contaminated by the wheels when they are held, and transportation is easy without causing troubles in bringing them into the train or other vehicles. It becomes. In this state, the shopping cart can also be moved in the horizontal direction using all the wheels.
[0029]
In the folded state of the shopping cart with a bag according to the present invention, the grip of the front leg cage is located at the top in the folded state, and the front wheels and the rear wheels are oriented in a direction suitable for moving the shopping cart. Therefore, the shopping cart can be moved in the horizontal direction with the grip 3d. It is also possible to carry a shopping cart by holding the grip 3d. You can fold a bag that has been swelled by shopping without removing it from the shopping wheelbarrow.
[0030]
The shopping cart of the present invention can fold a bag that has been inflated in a large amount without being removed from the shopping cart.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a usage state of a shopping cart according to an embodiment of the present invention.
FIG. 2 is a perspective view showing a use state in which the seat is folded.
FIG. 3 is an enlarged view of the handle portion.
FIG. 4 is an enlarged perspective view of the front wheel portion.
FIG. 5 is a side view of the main part.
FIG. 6 is a perspective view of the front wheel support member.
FIG. 7 is a perspective view of a lock lever 2B of the brake rod 1;
FIG. 8 is a perspective view showing the folded state.
FIG. 9 is a side view showing the operation of the lock lever of the handle rod.
FIG. 10 is a side view showing the operation of the lock lever of the handle rod.
FIG. 11 is a perspective view showing the folding procedure.
[Explanation of symbols]
1 Brake rod 1A Bowden wire 2 (for brake device operation) Handle rod 2A Bracket 2B (for brake rod support) Lock lever 2a (For parking brake) Horizontal handle base portion 3 U-shaped front leg rod 3c Pivot support Pin 3d Grip 4 Support member 5 Seat support frame body 6 Support body 7 Front wheel support portion 7a 90 ° turning groove 8 Front wheel 8a Front wheel arm 10 Rear leg rod 11 Rear wheel support portion 11a 90 ° turning groove 12 Rear wheel 13 Intermediate rod 14 Rear Rod 15 Front rod 16 Front wheel support rod 17 Rear wheel support rod 18 Support rod 19 Rear leg support rod 21 Brake device 22, 27 Roller 23 Lock lever 24 Lock pin 25 Lock shaft 28, 29 Actuation rod 30 Bag 31 Bag storage part 32 Bag lid cloth 40 seats

Claims (2)

A front leg 3 having a U-shaped overall shape, a U-shaped handle 2 that is rotatably attached to the front leg 3 by a pivot pin 3c, and a support attached to both sides of the front leg 3 A member 4;
A rear leg rod 10 is pivotally attached to the support member 4, and a rear wheel support member 11 is attached to a lower end portion of the rear leg rod 10 so as to be slidable and rotatable in the axial direction. The rear wheel 12 is attached to
A front wheel support member 7 is attached to the lower end of the front leg rod 3 so as to be slidable and rotatable in the axial direction, and a front wheel 8 is attached to the front wheel support member 7.
An intermediate rod 13 is rotatably attached to the lower end portion of the handle rod 2 by a shaft, a long hole 13a is formed in the lower end portion of the intermediate rod 13, and a pin provided on the rear rod 14 is formed in the long hole 13a. A rear wheel is engaged so as to be movable in the vertical direction, and a roller 22 is attached to the rear rod 14, and the roller 22 is formed on the rear wheel support member 11 and turns 90 ° while reaching the lower end from the upper end. It is inserted into the turning groove 11a,
A front rod 15 is pivotally attached to a front end portion of the rear rod 14 by a pin, and a roller 27 is attached to the front rod 15. The roller 27 is formed on the front wheel support member 7, and is moved 90 from the upper end to the lower end. ° It is inserted in the groove 7a for turning the front wheel,
A pair of actuating rods 28 and 29 are pivotally supported on the lower end of the handle bar 2, and the actuating rods 28 and 29 are rotatably attached to the front wheel support member 7 and the rear wheel support member 11. In addition, when the handle bar 2 is folded around the pivot pin, the front wheel 8 and the rear wheel 12 are moved to the inner side due to the relative position variation between the rollers 22 and 27 and the turning grooves 7a and 11a. Configured to rotate 90 ° toward
A seat having a brake rod 1 provided along an inner side of the handle rod 2 and configured to rotate in a direction approaching the handle rod 2 via a Bowden wire 1A to brake the wheel. Have a shopping wheelbarrow. A U-shaped seat support frame 5 in plan view is rotatably supported by a pin at the front portion of the support member, and a U-shaped support 6 is attached to the seat support frame 5 so as to be rotatable downward by a pin. The seat 40 is mounted on the seat support frame 5, the support rod 18 is pivotally mounted on the front rod 15 coaxially with the roller 27, and the front end of the support rod 18 is attached to the support 6. 2. A shopping cart having a seat according to claim 1, wherein the shopping cart is pivotally attached.

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