JPH08156797A - Folding cart - Google Patents

Abstract

PURPOSE: To provide a shopping cart which is light weight and foldable in a small size. CONSTITUTION: A supporting rod 2 is expandable by an outer cylinder 3, an inner cylinder 4 and a handle rod 5 which are provided separately. A hook 13 for hanging a bag for goods is provided at an upper portion of the supporting rod 2. Leg rods 18 and supporting arms 19 are pivotally mounted on pins 17, respectively. Each leg rod 18 is connected to a guide ring 20 through a respective connecting rod 21. A slide member 24 pivotally supported on the connecting rod 21 engages with the supporting arm 19 in a slidable connection. The guide ring 20 is fixed on a position (as shown) of the supporting rod 2 by a stopper 25 for developing the supporting arms 19. When the guide ring 20 is released, the leg rods 18 are moved along an arrow A, the guide ring 20 is moved along an arrow B and wheel axles are turned along the opposite direction, the rods/ arms 18, 19, 21 are folded and contact with the side surface of the outer cylinder 4. Rings 41 are provided for engaging the bag with cords.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a supermarket,
The present invention relates to a cart used for lightly carrying a plastic bag-made product bag called a shopping bag for carrying one or more products together when shopping at a food store or the like.

[0002]

2. Description of the Related Art Conventional carts of this type generally have two or more wheels on a vehicle body and a basket for loading products, and a grip portion for pushing or pulling by hand is provided on the upper end of the vehicle body. There are some that can be folded and downsized for the convenience of transportation on the outward route, but there is a limit to downsizing because the basket cannot be folded.

[0003]

SUMMARY OF THE INVENTION According to the present invention, the above-mentioned cart can be folded to a size about the same as when folding a folding umbrella that folds a bone in two, and is lightweight and easy to handle. The task is to

[0004]

[Means for Solving the Problems] One of the means for solving the above problems is, as described in claim 1, that a wheel (31) is connected to a lower portion of a column (2) whose length can be expanded and contracted. , The column (2)
It is characterized in that a hook (13) for hanging a product bag and a grip portion (15) are provided on the upper part of the.

Further, as described in claim 2, the other means is a support column in which the inner cylinder and the core rod are accommodated in the outer cylinder so as to extend upward and be fixed, and pivotally attached to the lower end of the outer cylinder. A pair of left and right leg rods and support arms, a guide ring that is loosely fitted to the outer cylinder and has a locking position at the lower part of the outer cylinder, and a guide ring that can move upward from the locking position, and an intermediate position between the guide ring and the leg rod Connecting rod having a slide member that slides along the support arm in the middle, a wheel attached to the tip of the leg rod via an axle, a hook and a grip provided on the upper part of the column, It is characterized by including.

[0006] Still another means is, in claim 2, the means for compacting the wheel portion when the cart is folded is such that one end of the axle can be pivoted to the tip of the rod about 180 ° over the inside and outside of the tip. Characterized by being pivotally attached.

[0007] And, still another means is claim 2 or 3.
In order to make the cart self-supporting when the cart is used, a support rod having a rear inclined front surface at the upper end front surface and a slot extending in the longitudinal direction near the upper end is laterally attached to the rear portion of the guide ring. It is characterized in that the elongated hole is fitted into the support pin and rotatably attached.

[0008]

According to the means of claim 1, when the prop is expanded and contracted to hang the product bag on the hook, and the cart is held and pushed by the hook,
Most of the weight of the product bag is supported by the cart, and the user can pull the product while supporting the cart, so that the product can be transported with a slight force.

According to the second aspect of the present invention, the leg rod and the support arm are brought into a state along the outer cylinder with the guide ring being pulled up, and when the inner cylinder and the core rod are pushed into the outer cylinder, the support rod of the strut is moved. The length is about one-third. When the guide ring is lowered to the locking position from this state, the leg rod expands downward and the support arm expands upward. If you extend the stanchion, hang the upper end of the product bag on the hook, receive the lower part of the service bag on the support arm and tie it with an appropriate string, you can pull the grip on the upper end of the core rod and roll the wheel to carry it.

According to the third aspect of the present invention, when the leg rod is folded, the wheel shaft is turned outward so as not to interfere with the wheel and the support arm, the connecting rod, the outer cylinder, etc. To enable.

According to the means of claim 4, when the supporting rod is hung on the supporting pin, the supporting leg becomes rotatable, and when the end portion is rotated upward, the supporting leg is in a folded state. When the support pin is brought into contact with the lower portion of the elongated hole when the guide ring is lowered and expanded, the receiving surface of the support rod contacts the guide ring and the support rod is inclined rearward to support the column.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is a cart, and 2 is a support thereof. The support 2 has an outer cylinder 3 into which an inner cylinder 4 and a core rod 5 are sequentially inserted so that they can be telescopically expanded and contracted. A stopper 6 shown in FIG. 2 is provided on the rear surface to lock the lower part of the inner cylinder 4, and the core rod 5 is frictionally coupled when the lower end reaches the upper part of the inner cylinder 4. ing.

FIG. 2 shows the stopper 6, and 7 is the outer cylinder 3.
An ear piece 8 protruding from the ear piece 7 is a locking lever pivotally attached to the ear piece 7 with a pin 8 ₁ , and has a tip 8 ₂ and a pressurizing portion 8 ₃ , and the pin 8 ₁
The tip 8 ₂ is adapted to be repulsed by a V-shaped spring 9 attached to the outer cylinder 3 and pass through the hole 10 of the outer cylinder 3 to enter the hole 11 of the inner cylinder 4. The inner cylinder 4 can be pushed down in the outer cylinder ₃ by pushing the pressurizing portion 8 ₃ and retracting the tip 8 ₂ from the hole 11.
In order to prevent the inner cylinder 4 from slipping upward from the outer cylinder 3, a proper engaging protrusion may be provided between the inner surface of the outer cylinder 3 and the outer surface of the inner cylinder 4.

A collar 12 having a pair of hooks 13 is fixed to the upper end of the inner cylinder 4, and the hooks 13 are used for hanging a product bag when the support column 2 is in an extended state.

A lateral pipe 14 is welded to the upper end of the core rod 5, and a rectangularly curved holding portion 15 is rotatably connected to the lateral pipe 14.

At the lower end of the outer cylinder 3, a connecting fitting 16
Is welded, and a pair of leg rods 18 and 18 and support arms 19 and 19 are pivotally attached to a pair of pins 17 and 17 provided thereon. A guide ring 20 is slidably fitted onto the outer surface of the outer cylinder 3 so that the guide ring 20 and the leg rod 1
8 is connected to the middle part by a connecting rod 21, pins 22 and 23,
Further, a slide member 24 through which the supporting arm 19 can penetrate and slide is attached to the connecting rod 21 by a pin 24 ₁ so as to be rotatable.

Accordingly, when the leg rod 18 is rotated about the pin 17 in the direction of the arrow A, which is the folding direction, the connecting rod 2
1 is moved upward together with the guide ring 20 in the direction of arrow B, and the slide member 24 is also moved upward.
The support arm 19 is also pushed by the slide member 24, and the arrow A
It rotates in the same direction and is folded as shown in FIG.

As shown in FIGS. 6 and 7, the guide ring 2
A stopper 25 is provided on the side surface of 0. The stopper 2
Reference numeral 5 is similar to the stopper 6, and is attached to the ear piece 26 extending obliquely rearward from the guide ring 20.
A locking lever 27 is pivotally attached to the ear piece 26 by a pin 27 ₁ , and a tip 27 ₂ of the locking lever 27 is attached to the guide ring 20.
The spring 30 so that it can enter the hole 28 of the
When the pressing portion 27 ₃ is pressed, the tip end 27 ₂ retracts from the hole 29.

The hole 29 is provided in the lower portion of the outer cylinder 3, and when the guide ring 20 is fixed to the outer cylinder 3 by the stopper 25 as shown in FIG. 7, the leg rod 18 and the holding arm 1 are provided.
9 and the like are moved in the direction opposite to the arrow A to be in the deployed state as shown in FIG. 1, and when the tip 27 ₂ is withdrawn from the hole 29 and the guide ring 20 is raised in the arrow B direction, the leg rod 1
8. The holding arm 19 moves in the direction of arrow A to be in a folded state.

As shown in FIG. 5, the axle 31 _{1 of the} wheel 31 is pivotally attached to the lower end of the leg rod 18 by a pin 32. When the leg rod 18 and the like are deployed, the axle 31 is at the lower end of the leg rod 18. The boss 31 ₂ comes into contact with the outer side surface 33 to maintain an upright posture. Then, at the time of folding, the wheel 31 is turned about the pin 32 by about 180 ° as shown by an imaginary line so as to come to the outside of the leg rod 18 which is directed upward.
It does not prevent 8 from approaching the outer cylinder 3.

As shown in FIG. 6, a supporting rod 35 is attached to the rear surface of the guide ring 20 to support the support column 2 from the rear side to maintain the standing state and to fold it when not in use. The support rod 35 has an elongated hole 3 near the top as shown in FIG.
Yusuke and 6, the edge portion 36 ₁ that surrounds it, the receiving surface 36 ₂ inclined and formed on one side of said edge portion 36 _1.

On the rear surface of the guide ring 20, an ear piece 37 facing rearward is projected, and the ear piece 37 is the ear piece 2.
6, the height and the direction are different from each other, and the support pin 38 passing through the elongated hole 36 is fixed to the ear piece 37. The support pin 38 is separated from the outer tube 3 by a distance L ₁ as shown in FIG. 9, and the width W of the edge portion 36 ₁ of the support rod 35 is narrower than the distance L ₁ . Further, the length of the long hole 36 is set so that the length L ₂ from the upper surface of the pin 38 to the upper end of the receiving surface 36 ₂ is longer than L ₁ as shown in FIG.

Due to the above-mentioned shape of the support rod 35, when the support pin 38 is received by the lower end 36 ₃ of the elongated hole 36 and the guide ring 20 is received by the receiving surface 36 ₂ as shown in FIG.
The support rod 35 opens the legs with respect to the guide ring 20 and the outer cylinder 3, but cannot rotate more than the illustrated angle, thereby preventing the outer cylinder 3 from falling backward. When it is desired to turn the support rod 35 upward, as shown in FIG. 10, the support rod 35 is inverted so that the lower end 36 ₃ of the long hole 36 is fixed to the support pin 3.
When brought into contact with the upper surface of 8, the reverse rotation is blocked because L ₂ > L ₁ and the upward state is maintained.

A hole 40 is bored at the end of the support arm 19 and a metal wire ring 41 is continuously provided. The ring 41 is for hanging the cord 42 shown in FIG. 6, and the handle at the upper end of the product bag 43 is hooked on the hook 13, and the product storage portion at the lower part of the product bag 43 is fastened with the cord 42 from the front side. On the front of the supporting arm 19, the outer cylinder 3, and the connecting rod 21.
The lower part of 3 is tied up to prevent the product bag 43 from swinging.

When there is no possibility of swinging the bag 43, the bag 43 may be supported from behind by the support arm 19 or the like, and the string 42 may be directly attached to the hole 40 without providing the ring 41. .

With the above-described structure, as shown in FIG. 1, the leg rod 18, the support arm 19 and the like are opened, the support column 2 is extended, the bag 43 is hung on the hook 13, and the grip portion 15 is gripped by the hand. When the vehicle 1 is pulled forward or backward, the cart 1 moves lightly due to the rolling of the wheels 31, so that the burden on the user is reduced.

The support rod 35 may be in an upwardly flipped-up state or may be in a downwardly hung state during use.

Further, the cart 1 is made with the supporting rod 35 facing downward.
May be moved. In this case, when the cart 1 is upright or close to this, the support rod 35 hangs vertically from the pin 38, and the lower end is away from the ground, which does not hinder the movement. If the cart 1 is tilted rearward in this state, the lower end of the support rod 35 will come into contact with the ground, and if the cart 1 is further advanced a little, the support rod 35 will tilt forward and the support rod 2 will be in the state shown in FIG.
The cart 1 becomes independent.

Next, when folding the cart 1, press the pressing portion 27 ₃ of the locking lever 27 in the stopper 25 of the guide ring 20, the leg causes dismiss the tip 27 ₂ from the hole 29 of the outer cylinder 3 When the rods 18, 18 are rotated in the direction of arrow A in FIG. 1, the connecting rod 21 rises and is pushed by the slide member 24 attached to the connecting rod 21 so that the support arm 19 also rotates in the A direction. If the wheels 31 are swung inward as shown by the phantom lines in FIG. 5, the leg rods 18 will not move at the folding position of the leg rods 18.
Located outside. As a result, the leg rods 18 and 18 are parallel to the side surface of the outer cylinder 3 in close proximity to each other, and the connecting rod 21 and the support arm 19 are also close to the side face of the outer cylinder 3 in a state of overlapping the leg rod 18 in the front-rear direction.

Next, the inner cylinder 4 can be housed in the outer cylinder 3 by pressing the pressing portion 8 ₃ of the stopper 6 to unlock the inner cylinder 4, and the gripping rod 5 is attached to the inner cylinder 4. The gripping rod 5 can be accommodated in the inner cylinder 4 by pushing and releasing the frictional engagement, and the folding is completed when the gripping portion 15 is swung downward to lower the height.

FIG. 11 shows an example of the suspended state of the bag and the dimensions of each part. The height when unfolded is 870 mm and the width is 32.
It is 0 mm, but when it is folded, it will be 260 as shown in Fig. 4.
mm and 96 mm.

In the above embodiment, the support arm 1
In the interlocking portion of 9 and the connecting rod 21, instead of the structure using the slide member 24, a slit is provided in the supporting arm 19 in the longitudinal direction, and a pin that slides in the slit is planted in the connecting rod 21. The hook 13 may be provided on the upper portion of the gripping rod 5 so that a large product bag can be hung.

Further, the wheel shaft 31 ₁ is fixed to Ashi杆18 may be one that can not pivot to a virtual line state of FIG. In this case, since the wheel 31 comes into contact with the outer cylinder 3 or the ear piece on the side portion of the guide ring 20 at the time of folding and the leg rod 18 cannot come into close contact with the outer cylinder 3, the degree of decrease in the lateral width is small. Also,
The lateral tube 14 may be used as the gripping portion without providing the quadrangular gripping portion 15.

Further, a wheel 31 is provided at the lower end of one column 2 which can be expanded and contracted without providing the leg rod 18, the support arm 19, the connecting pipe 21 and the like in the above embodiment, and the hook 13 is provided on the upper portion of the column 2. Only the grip portion 15 may be provided, and even in this case, the weight of the product bag is supported by the columns 2 and the wheels 31, and the user only needs to apply a force for preventing the cart from collapsing and pulling the cart. Can be used in.

Also, wheels may be attached to the lower ends of the two columns that can be expanded and contracted, and the lower parts of the two columns, or the lower parts and the upper parts may be connected by a center-folding link, and hooks and grips may be provided on the upper part. Good. The center-folded link has a structure in which two links are connected by a pivot and both ends are pivotally attached to both columns, so that the link can be expanded from a folded state to a state in which it is slightly beyond a straight line. If this center-folding link is expanded, the space between both columns will be expanded, and if it is formed into a center-folding shape, both columns will be closer. Therefore, compactness can be achieved by the approach of the columns and the shortening of each column.

In each of the above-mentioned embodiments, the structure for expanding and contracting the support column is not limited to the telescopic type structure shown and described.
It may be a plug-in type joint rod type, or may be a bent type with a hinge structure.

[0037]

According to the first aspect of the present invention, since the product is hung on the hook of the extended support and the weight of the product bag is supported by the wheels, the product bag can be carried lightly. It is very convenient to carry because it becomes compact when shortened.

Further, according to the means of claim 2, since the product bag is hung on the hook provided on the upper part of the cart and the lower part is received by the support arm, compared to the product bag placed on the basket. There is an advantage that the basket is unnecessary and can be folded into a small size.

Since the four members of the leg rod, the outer cylinder, the inner cylinder, and the gripping rod that determine the height of the cart are folded so as to have one height, the height is reduced to approximately one third or less. Most of the width is about 40mm due to the inner pipe and the leg rods on both sides of the inner pipe, which is about the size of a folding umbrella. Therefore, it is extremely convenient because it can be stored in a special case at all times and carried in a handbag or the like, and when shopping, it can be unfolded and used for carrying a product bag.

According to the third aspect of the invention, by turning the wheel shaft, the wheel, the support arm, the connecting rod, the outer cylinder and the like can be folded in a small width without interference, which is extremely portable. It has the advantage of being convenient.

According to the fourth aspect of the invention, if the lower part of the elongated hole of the supporting rod is brought into contact with the supporting pin, the supporting ring together with the guide ring can be supported from the rear side by the receiving surface to make the cart self-supporting. When the support rod is rotated upward, the support rod is folded upward by the elongated hole and the support pin, which has an advantage that it does not hinder the pulling of the cart.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention when it is developed.

FIG. 2 is a vertical sectional view of a stopper.

FIG. 3 is a vertical sectional view of an interlocking portion.

[Fig. 4] Front view when folded

[Fig. 5] Front view of wheels

[Fig. 6] Side view of the lower part when unfolded

FIG. 7 is a vertical sectional view of a stopper of a guide ring.

FIG. 8 is a side view of the supporting rod.

FIG. 9 is an explanatory view of the action of the supporting rod.

FIG. 10 is an explanatory view of a state where the support rod is flipped up.

FIG. 11 is an explanatory view of a usage state

[Explanation of symbols]

1 Cart 2 Support 3 Outer Cylinder 4 Inner Cylinder 5 Grip Rod 6,25 Stopper 8,27 Locking Lever 13 Hook 16 Coupling Metal 18 Leg Rod 19 Support Arm 20 Guide Ring 21 Link Rod 24 Sliding Member 31 Wheel 35 Support Rod 36 Length Hole 36 ₂ Support surface 38 Support pin

Claims (4)

[Claims] 1. A wheel at the bottom of a column (2) whose length can be expanded and contracted.
A foldable cart characterized in that a hook (13) for suspending a product bag and a gripping portion (15) are provided on an upper portion of the column (2) in a continuous manner. 2. An outer cylinder (3), an inner cylinder (4), a support rod (2) in which a core rod (5) is extended upward and fixedly accommodated, and a lower end of the outer cylinder (3). A pair of left and right pivotal rods (18) and support arms (19) pivotally attached, and an outer cylinder (3) are loosely fitted and have a locking position at the lower part of the outer cylinder (3). A guide ring (20) which can be moved upward, and a slide member (24) which is connected to an intermediate portion of the guide ring (20) and the lever rod (18) and slides along the support arm (19) at the intermediate portion. With a rod (21), a wheel (31) attached to the tip of the leg rod (18) via an axle (31 ₁ ), a hook (13) and a grip (15) provided on the upper part of the column (1). ), And a foldable cart. 3. The wheel assembly according to claim 2, wherein one end of the axle (31 ₁ ) is attached to the tip of the leg rod (18) substantially over the inside and outside of the tip.
A foldable cart characterized by being pivotally attached so that it can be turned by 80 °. 4. The method of claim 2 or 3, receiving surface of the inclined after upper front and (36 _2), a support rod (35) having an elongated hole (36) extending in the longitudinal direction near the top, the guide ring ( 20) A foldable cart characterized in that the oblong hole (36) is fitted into a supporting pin (38) laterally attached to a rear portion of the rear portion, and rotatably attached.