JP2023059738A - cart - Google Patents

Abstract

To provide a cart which is easily pushed by a user through a handle and has a good turning property.SOLUTION: A cart 100 is constituted of a frame 102, a pair of front wheel 110 and a rear wheel 112 attached to a lower end of the frame 102, a handle 106 provided at an upper end of the frame 102, and a load-carrying platform 104 arranged between the handle 106 and the front and rear wheels 110 and 112 in a vertical direction. A link member 120 having a link shaft 133 is provided on the frame 102 for folding the front wheel 110 and the rear wheel 112 while closing distance therebetween. The handle 106 and the link shaft 113 are arranged at a position projected into a base surface A surrounded by a turning shaft 111 of the front wheel 110 and a rotation center of the rear wheel 112. A center position B of length in a horizontal front-back direction on the load-carrying platform 104 is set to a rear side of a center position C including the center position C of length in a horizontal front-back direction on the base surface A.SELECTED DRAWING: Figure 5

Description

The present invention relates to a cart that is pushed by a user for shopping or the like.

Many carts that are pushed by users for shopping have been developed (for example, Patent Document 1). Each cart has a pair of front wheels, a pair of rear wheels, a handle to be gripped by the user when pushing, and a loading platform, and is used by pushing the handle with a shopping basket or the like placed on the loading platform. It's like

Japanese Unexamined Patent Application Publication No. 2015-107700

However, with conventional carts, for example, the weight of items (such as shopping baskets) to be placed on the carrier becomes large, and even if the user tries to push the handle strongly, it is difficult to push the cart due to the balance of the entire cart. There was a problem that even if you tried to bend it, the turning performance was poor.

SUMMARY OF THE INVENTION The present invention has been made in view of such problems, and an object of the present invention is to provide a cart that can be easily pushed by a user via a handle and that has good turnability.

According to one aspect of the invention,
a frame, a pair of front and rear wheels attached to the lower end of the frame, a handle provided to the upper end of the frame, and the frame vertically between the handle and the front and rear wheels. It is equipped with a cargo bed arranged in the
The frame includes a link member having a link shaft for folding the front wheel and the rear wheel closer to each other,
The front wheel is a slewing wheel having a slewing shaft,
The rear wheel is a fixed wheel,
the handlebar and the link shaft are arranged at a position projected onto a base plane surrounded by the turning shaft of the front wheel and the center of rotation of the rear wheel;
A cart is provided in which a center position in the horizontal front-rear direction of the loading platform includes a center position in the horizontal front-rear direction of the base surface and is located rearward of the center position.

Preferably,
The handle is
a pair of handle frames assembled to the upper end of the frame and facing obliquely upward to the rear;
a pair of handle side portions facing obliquely forward and upward from the upper end portion of each of the handle frames;
a pair of handle bending portions that bend from the upper end of each handle side portion toward the central portion;
and a lateral handle portion having one end connected to the tip of one of the handle bending portions and the other end connected to the tip of the other handle bending portion and extending in the left-right direction.

According to the present invention, the handlebar and the link shaft are arranged at positions projected onto the base plane surrounded by the turning axis of the front wheel and the center of rotation of the rear wheel, and the horizontal length of the cargo bed in the front-rear direction is The center position of is on the posterior side of the center position including the center position of the length in the horizontal front-rear direction on the base plane.

As a result, even if the user applies a downward load to the handle, the cart is less likely to overturn, and the weight of the shopping basket or the like placed on the platform is applied more to the rear wheels than to the front wheels, so that the user can easily It was possible to provide a cart that is easy to push through the handle and has good turnability.

1 is a perspective view showing an example of a cart 100 to which the present invention is applied; FIG. 1 is a perspective view showing an example of a cart 100 to which the present invention is applied; FIG. 1 is a front view showing an example of a cart 100 to which the present invention is applied; FIG. 1 is a rear view showing an example of a cart 100 to which the present invention is applied; FIG. 1 is a right side view showing an example of a cart 100 to which the present invention is applied; FIG. 1 is a plan view showing an example of a cart 100 to which the present invention is applied; FIG. 4 is a diagram for explaining a base plane A; FIG. 3 is an exploded front view of the handle 106 and the handle height adjustment mechanism 108; FIG. FIG. 3 is a partially see-through right side view of the handle 106 and the handle height adjustment mechanism 108; FIG. 10 is an enlarged view of the X portion in FIG. 9; FIG. 11 is a diagram showing a state in which an operation wire 178 is pulled up from FIG. 10; 3 is a perspective view showing an example of a shopping basket 300; FIG. 3 is a perspective view showing an example of a shopping basket frame 302 of the shopping basket 300. FIG. FIG. 12 is a perspective view showing the shopping basket 300 with the plate member 308 flipped up; FIG. 3 is a perspective view showing a state in which the cart 100 is folded; FIG. 3 is a perspective view showing a state in which the cart 100 is folded; 2 is a perspective view showing the cart 100 with a shopping basket 300 placed thereon; FIG.

(Regarding the configuration of the cart 100)
One embodiment of a cart 100 to which the present invention is applied will be described with reference to FIGS. 1 to 6. FIG.

Cart 100 generally includes frame 102 , bed 104 , handle 106 and handle height adjustment mechanism 108 .

The frame 102 includes a pair of front wheels 110, a pair of rear wheels 112, a pair of front frames 114, a pair of rear frames 116, a front construction frame 118, a connecting member 119, a pair of link members 120, A rear erection frame 122 and a folding operation member 124 are provided.

The front wheel 110 is a swivel wheel attached to the end of the cart 100 in the forward/advancing direction (the direction in which the user walks using the cart 100; the same shall apply hereinafter). It is rotatable 360 degrees. The type of wheel used for front wheel 110 is not particularly limited. In this embodiment, a pair of left and right front wheels 110 are used.

The rear wheel 112 is a fixed wheel attached to the end of the cart 100 in the backward/backward direction (the direction opposite to the direction in which the user walks using the cart 100; the same shall apply hereinafter). In other words, unlike the front wheel 110, the rear wheel 112 is not rotatable 360 degrees around the vertically extending turning shaft. The type of wheel used for rear wheel 112 is not particularly limited. In this embodiment, a pair of left and right rear wheels 112 are used.

Further, each rear wheel 112 is provided with a known brake mechanism 113 .

The front frame 114 is a rod-shaped member extending obliquely upward from the front to the rear of the cart 100. The cart 100 according to the present embodiment uses a pair of left and right front frames 114. As shown in FIG.

Further, at least the upper end portion of the front frame 114 is formed in a substantially tubular shape, and the tip portion of a handle frame 160 (described later) that constitutes the handle 106 is fitted thereon. Further, on the inner surface of the upper end of the front frame 114, a height adjustment hole 206 into which a pin portion 194 (described later) of a positioning pin member 182 (described later) of the handle height adjustment mechanism 108 is inserted is inserted. are provided at predetermined intervals along the longitudinal direction.

Furthermore, a connecting member 119 is arranged and fixed at a substantially intermediate position of the front frame 114 .

The rear frame 116 is an arch-shaped member extending forward and obliquely upward, and a pair of left and right rear frames 116 are used in the cart 100 according to the present embodiment. Each rear frame 116 has a rear wheel 112 rotatably attached to its lower end. Also, the upper end of each rear frame 116 is rotatably connected to a connecting member 119 .

The front erection frame 118 is a member having one end connected to the lower end of one front frame 114 and the other end connected to the lower end of the other front frame 114. In the present embodiment, the front construction frame 118 is substantially U-shaped when viewed from the front. A letter-shaped front erection frame 118 is used.

Also, the pair of front wheels 110 are attached to a bent portion between the vertical portion and the horizontal portion of the front erection frame 118 . Of course, the mounting position of the front wheels 110 may be any aspect as long as they are directly or indirectly mounted on the lower ends of the front frames 114 or the front erection frame 118 .

The connecting member 119 has a first mounting portion 126 and a second mounting portion 128 , and is a member that allows the second mounting portion 128 to rotate relative to the first mounting portion 126 . In this embodiment, the first mounting portion 126 is formed in a substantially tubular shape, and the front frame 114 is inserted and fixed into the first mounting portion 126 .

The rear frame 116 is attached to the second attachment portion 128 so that the rear frame 116 rotates on a plane including the direction in which the front frame 114 inserted into the first attachment portion 126 extends. ing. This allows the rear frame 116 to rotate relative to the front frame 114 .

The link member 120 is generally composed of a strip-shaped first member 130 and a strip-shaped second member 132 . In this embodiment, a pair of left and right link members 120 are used.

The first member 130 has one end rotatably attached to the inner surface of the front frame 114 closer to the front wheel 110 than the connecting member 119 , and the other end rotatably attached to the inner surface of the rear frame 116 . ing.

To further explain how the first member 130 is attached to the front frame 114 , a slider 134 is rotatably attached to one end of the first member 130 , and the slider 134 slides inside the tubular front frame 114 . housed movably.

Furthermore, the inner surface of the front frame 114 is formed with a slit 138 through which an interlocking member 136 connecting one end of the first member 130 and the slider 134 communicates. As a result, one end of the front frame 114 can reciprocate with the slider 134 within the range in which the slit 138 is formed.

One end of the second member 132 is rotatably attached between one end and the other end of the first member 130 (slightly toward the rear), and the other end is attached to the outer surface of the loading platform frame 150 (described later) of the loading platform 104 . It is attached so as to be rotatable toward the rear side of the loading platform rotation bracket 156 (described later).

Here, the joint point between the second member 132 and the first member 130 (hereinafter referred to as "link shaft 133") will be described in detail. As shown in FIG. 111 and the center of rotation 115 of the rear wheel 112.

Throughout the present specification, the base plane A refers to an area surrounded by the turning shafts 111 of the pair of front wheels 110 and the rotation centers 115 of the pair of rear wheels 112 in plan view.

Returning to FIG. 1 to FIG. 6, the rear construction frame 122 is a member having an arch-like appearance made by slightly bending a round pipe material, and both ends thereof are connected to the lower ends of the rear frame 116, respectively. Also, the arch-shaped rear construction frame 122 is arranged so as to be convex in the traveling direction (front side) of the cart 100 .

Since the rear installation frame 122 is installed between the pair of rear frames 116 in this way, it is possible to prevent the gap between the pair of rear frames 116 from undesirably widening or narrowing.

The folding operation member 124 is composed of an operation body 140 and a biasing member 142 . The operating body 140 has one end rotatably attached to the inner surface of the loading platform frame 150 (described later) of the loading platform 104 relative to a loading platform rotation bracket 156 (described later), and the other end is a member extending forward. be.

An engaging portion 146 that can be engaged and disengaged from an engaged member 144 provided on the front frame 114 is formed on one end side of the operating body 140 . Further, the other end side of the operation main body 140 is formed in a round bar shape that is easy for the user to operate.

The biasing member 142 is a member that always biases the operating body 140 in a direction (counterclockwise in FIG. 5) in which the engaging portion 146 engages with the engaged member 144. In this embodiment, the biasing member 142 A coiled spring is used. Of course, the biasing member 142 is not limited to a spiral spring.

The loading platform 104 is a member on which a shopping basket or the like is placed, and generally includes a loading platform frame 150 , a loading platform horizontal frame 152 , a receiving plate 154 , and a loading platform rotation bracket 156 .

The loading platform frame 150 is a pair of round bar members extending substantially linearly in the front-rear direction and parallel to each other. The load-bed horizontal frames 152 are a pair of round bars extending substantially linearly in the left-right direction and parallel to each other. is configured.

A bent frame 158 is provided between the end of the loading platform frame 150 and the end of the horizontal loading platform frame 152, and the corners of the substantially rectangular loading platform 104 are formed in an arc shape.

Further, in a side view (FIG. 5), these bent frames 158 are bent so as to rise toward the outside of the loading platform 104 (front-rear direction of the cart 100). Accordingly, when the cart 100 is unfolded (when the cargo bed 104 is horizontal), the cargo bed lateral frame 152 is higher than the cargo bed frame 150 .

The receiving plate 154 is a rectangular plate member installed between the pair of carrier frames 150. In this embodiment, two receiving plates 154 are arranged in the front-rear direction with a slight gap therebetween. Of course, the number of receiving plates 154 is not limited to this, and may be one or three or more.

The load-bed rotating bracket 156 is a plate member protruding downward from the lower surface of the pair of load-bed frames 150 at approximately the center in the longitudinal direction. The carrier frame 150 is rotatably attached to the rear frame 116 (and the connecting member 119) via the carrier pivot bracket 156. As shown in FIG.

Further, as shown in FIG. 5, the center position B in the horizontal front-rear direction of the loading platform 104 includes the center position C in the horizontal front-rear direction on the base plane A and is located rearward of the center position C. .

1 to 6, the handle 106 is generally integrally formed by a pair of handle frames 160, a pair of handle side portions 162, a pair of handle bending portions 164, and a handle lateral portion 166. .

The handle frame 160 is a straight rod-like member assembled to the upper end of the frame 102 and directed obliquely upward to the rear.

The handle side portion 162 is a round bar-shaped member that faces obliquely forward and upward from the upper end portion of each handle frame 160 .

The handle bending portion 164 is a round bar-shaped member that bends from the upper end of each handle side portion 162 toward the central portion.

The handle lateral portion 166 is a round bar-shaped member having one end connected to the tip of one handle bending portion 164 and the other end connected to the tip of the other handle bending portion 164 and extending in the left-right direction.

Also, as shown in FIG. 5, the handle 106 is arranged at a position projected onto the base plane A surrounded by the pivot 111 of the front wheel 110 and the center of rotation 115 of the rear wheel 112 .

As described above, the handle frame 160 of the handle 106 has its distal end fitted into the front frame 114, and the handle height adjustment mechanism 108 is operated to adjust the length of the handle frame 160 fitted into the front frame 114. By adjusting the height, the height of the handle 106 from the ground can be adjusted.

As shown in FIGS. 8 to 10, the handle height adjustment mechanism 108 generally includes an operating section upper cover 170, an operating section lower cover 172, an operating button 174, an operating button biasing member 176, and an operating wire 178. , a wire guide 180 , a positioning pin member 182 , a positioning pin biasing member 184 , a wire interlocking member 186 and a holder 188 .

The operation unit upper cover 170 is a member installed between the pair of handle frames 160, and has a shape in which the lower half is missing, like a cylinder split in half.

The operating section lower cover 172 is a member formed in a shape capable of covering the lower half (missing portion) of the operating section upper cover 170 described above. In addition, an operation button retraction hole 190 through which the operation button 174 retracts is formed in the longitudinal central portion of the operation section lower cover 172 .

The operation button 174 is a member mounted in an operation button retraction hole 190 formed in the operation section lower cover 172 . The height can be adjusted. Note that in a natural state (a state in which the user does not touch the operation button 174 ), the tip of the operation button 174 protrudes from the operation button retraction hole 190 .

The operation button biasing member 176 is a member that presses and biases the operation button 174 in a direction in which the tip of the operation button 174 protrudes from the operation button retraction hole 190. In this embodiment, a helical spring is used. there is Of course, as long as the operation button 174 can be pressed and energized, it is not limited to the helical spring.

The operation wire 178 is a member that transmits the operation of the operation button 174 by the user to the wire interlocking member 186 housed inside the tip portion of the handle frame 160 . In this embodiment, two operation wires 178 are used, and one end of each is arranged so as to contact the operation button 174 at the center of the operation section upper cover 170 in the longitudinal direction. 170 and the operating portion lower cover 172 and the inner side of the handle frame 160, and the other end is arranged at a position where it engages with the wire interlocking member 186 housed in the tip portion of the handle frame 160. .

The wire guide 180 is a member for converting the movement of the operation wire 178 from the direction in which the operation button 174 is operated by the user (that is, the vertical direction) to the horizontal direction, and in this embodiment, a substantially disk-shaped member is used. It is

The disk-shaped wire guide 180 is rotatably held by the operation unit upper cover 170, and the operation wire 178 is arranged along a part of the disk-shaped peripheral surface.

Accordingly, when the user presses the operation button 174, one end of the operation wire 178 also moves upward. Then, the wire guide 180 converts the vertical movement of the operation wire 178 into horizontal movement.

The positioning pin member 182 is a member arranged in the tip portion of the handle frame 160, and a pin portion 194 protruding from a pin protrusion/retraction hole 192 formed on the side surface of the tip portion of the handle frame 160 and a wire interlocking member 186 are inserted. It has a sliding interlocking member insertion hole 196 and a biased portion 198 that is pressed and biased by a positioning pin biasing member 184 .

The holder 188 is formed with a pin member sliding groove 201 in which the positioning pin member 182 slides. It slides in a direction perpendicular to the longitudinal direction of the frame 160 .

Of the inner surface of the interlocking member insertion hole 196 , the surface that slides in contact with the outer surface of the wire interlocking member 186 is an inclined surface 200 that is not perpendicular to the moving direction of the positioning pin member 182 . For example, in the present embodiment shown in FIG. 10, an inclined surface 200 is formed which has a cross section that goes inside the cart 100 as it goes downward.

In addition, in this embodiment, the biased portion 198 of the positioning pin member 182 can receive the biasing force from the positioning pin biasing member 184 in the moving direction of the positioning pin member 182 (horizontal direction in the figure). It is a plane perpendicular to the moving direction.

The positioning pin biasing member 184 has one end in contact with the biased portion 198 of the positioning pin member 182 and the other end in contact with the surface (surface inside the holder 188) facing the biased portion 198. , so that the pressing force for moving the positioning pin member 182 rightward in the drawing is constantly applied. In this embodiment, a helical spring is used as the positioning pin biasing member 184 . Of course, the spring is not limited to the helical spring as long as it can press and energize the positioning pin member 182 .

The wire interlocking member 186 is a member that engages with the other end of the operation wire 178 and is inserted into the interlocking member insertion hole 196 of the positioning pin member 182 . Further, the holder 188 is formed with an interlocking member sliding groove 202 in which the wire interlocking member 186 slides, and the wire interlocking member 186 moves through the handle frame 160 along the interlocking member sliding groove 202 . It slides parallel to the longitudinal direction of the handle frame 160 .

Further, an interlocking member inclined surface 204 of the wire interlocking member 186 that contacts the inclined surface 200 of the positioning pin member 182 is also a surface that is not perpendicular to the moving direction of the positioning pin member 182, like the inclined surface 200. . For example, in the present embodiment shown in FIG. 10, the interlocking member inclined surface 204 is formed so that the cross section goes inside the cart 100 as it goes downward.

The holder 188 is a member fixed inside the tip of the handle frame 160 and has the pin member sliding groove 201 and the interlocking member sliding groove 202 as described above.

With the handle height adjustment mechanism 108 as described above, when the user pushes the operation button 174 upward, the operation wire 178 passing between the operation section upper cover 170 and the operation section lower cover 172 is moved to the wire guide 180. pulled laterally by 11, at the lower end of the handle frame 160, the wire interlocking member 186 is pulled up by the operation wire 178, and the interlocking member inclined surface 204 of the wire interlocking member 186 is aligned with the inclined surface of the positioning pin member 182. 200 is pressed to the left in the figure. As a result, the positioning pin member 182 moves to the left in the drawing against the biasing force of the biasing member 142 , and the pin portion 194 becomes the pin retraction hole 192 and the height adjustment hole in the pin portion 194 and the front frame 114 . 206 is released and the height of the handle 106 can be raised or lowered.

When the handle 106 reaches the desired height, the operator releases the operation button 174 . Then, the operation button 174 is moved downward by the biasing force of the operation button biasing member 176 , and accordingly the wire interlocking member 186 is pulled downward by the operation wire 178 . When the wire interlocking member 186 is pulled down. Since the wire interlocking member 186 no longer presses against the positioning pin member 182 , the positioning pin member 182 is moved rightward in the drawing by the biasing force from the positioning pin biasing member 184 , and the pin portion 194 is moved out of the pin hole 192 . protrude again. In this manner, the height of handle 106 can be adjusted.

Next, an example of the shopping basket 300 placed on the cart 100 will be described with reference to FIGS. 12 to 14. FIG. Shopping basket 300 generally includes a shopping basket frame 302 and a body 304 .

The shopping basket frame 302 is composed of a frame body 310 and a pair of handle members 312 .

The frame main body 310 is a ring-shaped frame member having a substantially rectangular periphery in plan view, and has a circular cross section. In addition, the central portion of the pair of longitudinal members of the frame body 310 has an upwardly convex arched portion 306, and the user can grip the arched portion 306 when carrying the shopping basket 300. It's like

The handle member 312 is a member having a U-shaped appearance, and is bridged between a pair of longitudinal members of the frame body 310 and near the ends of the arch-shaped portion 306 . In addition, since the handle member 312 is rotatably attached to the frame body 310, the handle member 312 can be rotated with respect to the frame body 310 and lifted for use. The height of the shopping basket 300 as a whole can also be reduced by placing the handle member 312 along the top of the frame body 310 .

The main body 304 is an open box-like member made of highly flexible fabric or the like, and the frame main body 310 can be attached to and detached from the upper opening end of the main body 304 .

A pair of plate members 308 having higher hardness than the cloth or the like that mainly constitutes the main body 304 is arranged on a pair of inner wall surfaces of the main body 304 perpendicular to the longitudinal direction. Since these plate members 308 are attached to the main body 304 only at their upper edges, when using the shopping basket 300, the plate members 308 are arranged along the inner wall surface of the main body 304 as shown in FIG. When putting away, the main body 304 can be easily folded by pulling up the lower edge of the plate member 308 as shown in FIG.

(Characteristics of Cart 100)
According to the cart 100 according to this embodiment, the handle 106 and the link shaft 133 are arranged at positions projected within the base plane A surrounded by the turning shaft 111 of the front wheel 110 and the rotation center 115 of the rear wheel 112. Further, the center position B in the horizontal front-rear direction of the loading platform 104 includes the center position C in the horizontal front-rear direction of the base plane A and is located on the rear side of the center position C.

As a result, even if the user applies a downward load to the handle 106, the cart 100 is less likely to overturn, and the weight of the shopping basket 300 or the like placed on the platform 104 is placed on the rear wheels 112 rather than the front wheels 110. Therefore, it is possible to provide the cart 100 that is easy for the user to push via the handle 106 and that has good turnability.

The handle 106 is assembled to the upper end of the frame 102, a pair of handle frames 160 facing obliquely upward to the rear, a pair of handle side portions 162 facing obliquely upward to the front from the upper end of each handle frame 160, and each handle. A pair of handle bending portions 164 that bend from the upper ends of the side portions 162 toward the central portion, one end is connected to the tip of one of the handle bending portions 164, and the other end is connected to the tip of the other handle bending portion 164. Since the position of the handle 106 is positioned further forward by providing the handle lateral portion 166 extending in the left-right direction, the cart 100 can be easily pushed via the handle 106 and has good turnability. can do.

Further, regarding the handle height adjustment mechanism 108, the operating portion upper cover 170 is installed between the pair of handle frames 160, and the operating portion upper cover 170 is provided with an operating button 174 in the central portion thereof, thereby pushing the cart 100. The handle 106, which is used when adjusting the height, and the operation button 174, which is operated when adjusting the height, are separated from each other, so that the height can be adjusted smoothly.

When the cart 100 is unfolded and the user lifts the other end of the operating body 140 against the biasing member 142 of the folding operating member 124, the engaged member 144 of the front frame 114 and the operating body 140 is disengaged from the engaging portion 146.

When the front end side of the loading platform 104 is lifted, the rear end side of the loading platform 104 is pushed down, or the front wheels 110 and the rear wheels 112 are relatively brought closer to each other in the disengaged state, the link member 120 The slider 134 and the interlocking member 136 attached to one end of the first member 130 move downward along the slit 138 of the front frame 114. As a result, the front frame 114 and the rear frame 116 approach relatively, The loading platform 104 stands up with its front end facing up (see FIGS. 15 and 16). Thus, the cart 100 according to this embodiment can be folded with a simple operation.

Further, in the loading platform 104 according to the present embodiment, the loading platform lateral frame 152 is set higher than the loading platform frame 150 . As a result, as shown in FIG. 17, when the shopping basket 300 or the like is placed on the receiving plate 154 of the cargo bed 104, the lateral frame 152 of the cargo bed serves as a stopper in the longitudinal direction of the cart 100. does not undesirably slip off the loading platform 104. Further, the loading platform lateral frame 152 positioned higher than the receiving plate 154 also serves as a handle when the user lifts the cart 100 as a whole.

In addition, since the arch-shaped rear construction frame 122 is arranged so as to protrude in the traveling direction (front side) of the cart 100, the foot of the user pushing the handle 106 to advance the cart 100 forward is is less likely to hit the rear erection frame 122 .

It should be considered that the embodiments disclosed this time are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the scope of the claims rather than the above description, and is intended to include all modifications within the scope and meaning equivalent to the scope of the claims.

DESCRIPTION OF SYMBOLS 100... Cart, 102... Frame, 104... Loading platform, 106... Handle, 108... Handle height adjustment mechanism 110... Front wheel, 111... Pivoting shaft (of front wheel 110), 112... Rear wheel, 113... Brake mechanism, 114... Front side Frame 115 Rotation center (of rear wheel 112) 116 Rear frame 118 Front installation frame 119 Connecting member 120 Link member 122 Rear installation frame 124 Folding operation unit 126 First mounting portion (of connecting member 119) 128 Second mounting portion (of connecting member 119) 130 First member 132 Second member 133 Link shaft 134 Slider 136 Interlocking member DESCRIPTION OF SYMBOLS 138... Slit, 140... Operation main body, 142... Biasing member, 144... Engaged member, 146... Engaging part 150... Cargo-bed frame, 152... Cargo-bed horizontal frame, 154... Receiving plate, 156... Cargo-bed rotation bracket, Reference numerals 158: bent frame 160: handle frame 162: side portion of handle 164: bent portion of handle 166: lateral portion of handle 170: operation portion upper cover 172: operation portion lower cover 174: operation button 176: operation button biasing Member 178 Operation wire 180 Wire guide 182 Positioning pin member 184 Positioning pin biasing member 186 Wire interlocking member 188 Holder 190 Operation button hole 192 Pin hole 194 Pin portion 196 Interlocking member insertion hole 198 Biased portion 200 Inclined surface 201 Pin member sliding groove 202 Interlocking member sliding groove 204 Interlocking member inclined surface 206 Height Length adjustment hole 300 Shopping basket 302 Shopping basket frame 304 Body 306 Arch-shaped part 308 Plate 310 Frame body 312 Handle member A Base surface

Claims (2)

a frame, a pair of front and rear wheels attached to the lower end of the frame, a handle provided to the upper end of the frame, and the frame vertically between the handle and the front and rear wheels. It is equipped with a cargo bed arranged in the
The frame includes a link member having a link shaft for folding the front wheel and the rear wheel closer to each other,
The front wheel is a slewing wheel having a slewing shaft,
The rear wheel is a fixed wheel,
the handlebar and the link shaft are arranged at a position projected onto a base plane surrounded by the turning shaft of the front wheel and the center of rotation of the rear wheel;
The center position of the horizontal lengthwise direction of the cargo bed includes the center position of the horizontal lengthwise lengthwise direction of the base surface, and is located rearward of the center position. The handle is
a pair of handle frames assembled to the upper end of the frame and facing obliquely upward to the rear;
a pair of handle side portions facing obliquely forward and upward from the upper end portion of each of the handle frames;
a pair of handle bending portions that bend from the upper end of each handle side portion toward the central portion;
2. The handle lateral portion having one end connected to the tip of one of the handle bending portions and the other end connected to the tip of the other handle bending portion and extending in the left-right direction. cart.

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