cart

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

[Technical field]

[0001] The present invention relates to a cart that is pushed by a user for shopping or the like. [Background technology]

[0002] Many carts have been developed that users can push for shopping, etc. (for example, Patent Document 1). Each cart has a pair of front wheels, a pair of rear wheels, a handle that the user holds when pushing the cart, and a carrier, and is used by pushing the handle with a shopping basket or the like placed on the carrier. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2015-107700 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, with previous carts, there were problems such as when the weight of luggage (such as a shopping basket) placed on the loading platform became heavy, the overall balance of the cart made it difficult to push even when the user tried to push the handle hard, and the cart had poor turning ability when trying to turn left or right while pushing it.

[0005] The present invention has been made in consideration of such problems, and an object of the present invention is to provide a cart that is easy for a user to push via the handle and has good maneuverability. [Means for solving the problem]

[0006] According to one aspect of the present invention, The vehicle comprises a frame, a pair of front and rear wheels attached to a lower end of the frame, a handle provided at an upper end of the frame, and a loading platform disposed on the frame between the handle and the front and rear wheels in the vertical direction, The frame is a pair of front frames to which the front wheels are attached, a pair of rear frames to which the rear wheels are attached, and a connecting member connected to upper ends of the rear frames; a link member having a link shaft for folding the vehicle by shortening the relative distance between the front wheel and the rear wheel; and Equipped with The front wheel is a swivel wheel having a swivel shaft, The rear wheel is a fixed wheel, The handle has a handle side portion extending in the left-right direction, In plan view, The front wheel In The pivot shaft , a pair of The rotation center of the rear wheel and the intersection of the rear wheels The handle is projected onto a base plane surrounded by Side and the link shaft is disposed, The center position of the length of the platform in the horizontal front-rear direction is the center position of the length of the platform in the horizontal front-rear direction. or the length of the base surface in the horizontal front-back direction Behind the center position can be, The position in the horizontal fore-aft direction at which the connecting member is connected to the front frame is forward of the center position of the length of the loading platform in the horizontal fore-aft direction. Carts are provided.

[0007] Preferably, The handle is A pair of handle frames are attached to the upper end of the frame and face obliquely upward and rearward; A pair of handle side portions extending obliquely upward and forward from the upper end of each of the handle frames; A pair of handle bends each of the handle sides bent from an upper end toward a center; One end is connected to the tip of one of the handle bent portions, and the other end is connected to the tip of the other handle bent portion, and the handle extends in the left-right direction. The above and a handle side portion. Effect of the Invention

[0008] According to the present invention, the handle and link shaft are positioned at a position projected within a base plane surrounded by the pivot axis of the front wheels and the center of rotation of the rear wheels, and the center position of the horizontal fore-aft length of the cargo bed includes the center position of the horizontal fore-aft length of the base plane and is located rearward of that center position.

[0009] This reduces the risk of the cart tipping over even if the user applies a downward load to the handle, and the weight of a shopping basket or the like placed on the platform is placed on the rear wheels rather than the front wheels, making it possible to provide a cart that is easy for the user to push via the handle and has good turning ability. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view showing an example of a cart 100 to which the present invention is applied. [Diagram 2] FIG. 1 is a perspective view showing an example of a cart 100 to which the present invention is applied. [Diagram 3] FIG. 1 is a front view showing an example of a cart 100 to which the present invention is applied. [Figure 4] FIG. 2 is a rear view showing an example of a cart 100 to which the present invention is applied. [Diagram 5] FIG. 1 is a right side view showing an example of a cart 100 to which the present invention is applied. [Figure 6] FIG. 1 is a plan view showing an example of a cart 100 to which the present invention is applied. [Figure 7] FIG. 2 is a diagram illustrating the base surface A. [Figure 8] 1 is an exploded front view of a handle 106 and a handle height adjustment mechanism 108. FIG. [Figure 9] 1 is a partially see-through right side view of a handle 106 and a handle height adjustment mechanism 108. FIG. [Figure 10] FIG. 10 is an enlarged view of a portion X in FIG. [Figure 11] 11 is a diagram showing a state in which the operation wire 178 has been pulled up from the state shown in FIG. [Figure 12] FIG. 2 is a perspective view showing an example of a shopping basket 300. [Figure 13] 2 is a perspective view showing an example of a shopping basket frame 302 of a shopping basket 300. FIG. [Figure 14] 11 is a perspective view showing the shopping basket 300 with the plate member 308 raised. FIG. [Figure 15] FIG. 2 is a perspective view showing the cart 100 in a folded state. [Figure 16] FIG. 2 is a perspective view showing the cart 100 in a folded state. [Figure 17] FIG. 2 is a perspective view showing the cart 100 with a shopping basket 300 placed thereon. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] (About the composition of Cart 100) An embodiment of a cart 100 to which the present invention is applied will be described with reference to FIGS.

[0012] The cart 100 generally comprises a frame 102, a carrier 104, a handle 106, and a handle height adjustment mechanism 108.

[0013] 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 mounting frame 118, a connecting member 119, a pair of link members 120, a rear mounting frame 122, and a folding operation member 124.

[0014] The front wheels 110 are swivel wheels attached to the end of the cart 100 in the forward / traveling direction (the direction in which the user walks using the cart 100; the same applies below) and are rotatable 360° around a vertically extending swivel shaft 111. There are no particular limitations on the type of wheel used for the front wheels 110. In this embodiment, a pair of left and right front wheels 110 are used.

[0015] The rear wheels 112 are fixed wheels attached to the end of the cart 100 in the rearward / reverse direction (the direction opposite to the direction in which the user walks using the cart 100; the same applies below). In other words, the rear wheels 112 are not rotatable 360° around a vertically extending pivot axis like the front wheels 110. There are no particular limitations on the type of wheel used for the rear wheels 112. In this embodiment, a pair of left and right rear wheels 112 are used.

[0016] Further, each rear wheel 112 is provided with a known brake mechanism 113.

[0017] The front frames 114 are generally straight, rod-shaped members that extend obliquely upward from the front to the rear of the cart 100, and a pair of left and right front frames 114 are used in the cart 100 according to this embodiment.

[0018] At least the upper end of the front frame 114 is formed into a substantially cylindrical shape, into which the tip of a handle frame 160 (described later) constituting the handle 106 is fitted. A plurality of height adjustment holes 206, into which pin portions 194 (described later) of positioning pin members 182 (described later) of the handle height adjustment mechanism 108 are fitted, are provided on the inner surface of the upper end of the front frame 114 at predetermined intervals along the longitudinal direction of the front frame 114.

[0019] Furthermore, a connecting member 119 is disposed and fixed to the front frame 114 at approximately the center position.

[0020] The rear frames 116 are arch-shaped members that extend obliquely upward and forward, and a pair of left and right rear frames 116 are used in the cart 100 according to this embodiment. The rear wheels 112 are rotatably attached to the lower end of each rear frame 116. The upper end of each rear frame 116 is rotatably connected to a connecting member 119.

[0021] The front mounting 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, and in this embodiment, a front mounting frame 118 that is approximately U-shaped when viewed from the front is used.

[0022] The pair of front wheels 110 are attached to a curved portion between the vertical and horizontal portions of the front installation frame 118. Of course, the front wheels 110 may be attached in any manner as long as they are attached directly or indirectly to the lower end of each front frame 114 or to the front installation frame 118.

[0023] 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 relatively with respect to the first mounting portion 126. In this embodiment, the first mounting portion 126 is formed in a substantially cylindrical shape, and the front frame 114 is inserted and fixed into this first mounting portion 126.

[0024] Further, the rear frame 116 is attached to the second attachment portion 128 so that the rear frame 116 can rotate on a plane including the direction in which the front frame 114 inserted into the first attachment portion 126 extends. This allows the rear frame 116 to rotate relatively with respect to the front frame 114.

[0025] The link member 120 is generally made up of a rectangular first member 130 and a similarly rectangular second member 132. In this embodiment, a pair of left and right link members 120 are used.

[0026] One end of the first member 130 is rotatably attached to the inner surface of the front frame 114 closer to the front wheel 110 than the connecting member 119 is, and the other end is rotatably attached to the inner surface of the rear frame 116.

[0027] To further explain the mounting state of the first member 130 to the front frame 114, a slider 134 is rotatably mounted to one end of the first member 130, and this slider 134 is slidably housed inside the cylindrical front frame 114.

[0028] Furthermore, a slit 138 is formed on the inner surface of the front frame 114, through which an interlocking member 136 that connects one end of the first member 130 and the slider 134 communicates. This allows one end of the front frame 114 to move back and forth together with the slider 134 within the range in which the slit 138 is formed.

[0029] 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 rotatably attached toward the rear of a loading platform rotation bracket 156 (described below) on the outer surface of the loading platform frame 150 (described below) of the loading platform 104.

[0030] Here, to explain in detail the junction point between the second member 132 and the first member 130 (hereinafter referred to as the "link shaft 133"), this link shaft 133 is located at a position projected within the base plane A surrounded by the pivot shaft 111 of the front wheel 110 and the center of rotation 115 of the rear wheel 112, as shown in Figure 7.

[0031] Throughout this specification, the base surface A refers to an area surrounded by the pivots 111 of the pair of front wheels 110 and the rotation centers 115 of the pair of rear wheels 112 in a plan view.

[0032] 1 to 6, the rear installation frame 122 is a member having an arch-like appearance made by gently bending a round pipe material, and both ends of the frame are connected to the lower ends of the rear frame 116. The arch-like rear installation frame 122 is disposed so as to be convex toward the traveling direction (front side) of the cart 100.

[0033] By bridging the rear installation frame 122 between the pair of rear frames 116 in this manner, it is possible to prevent the gap between the pair of rear frames 116 from undesirably widening or narrowing.

[0034] The folding operation member 124 is composed of an operation body 140 and a biasing member 142. The operation body 140 is a member having one end rotatably attached closer to the front than a carrier rotation bracket 156 (described later) on the inner surface of a carrier frame 150 (described later) of the carrier 104, and the other end extending forward.

[0035] One end of the operation body 140 is formed with an engagement portion 146 that can be engaged with and disengaged from an engaged member 144 provided on the front frame 114. The other end of the operation body 140 is formed in a round bar shape that is easy for the user to operate.

[0036] The biasing member 142 is a member that constantly biases the operation body 140 in the direction in which the engaging portion 146 engages with the engaged member 144 (counterclockwise in FIG. 5), and in this embodiment, a coil spring is used. Of course, the biasing member 142 is not limited to a coil spring.

[0037] The carrier 104 is a member on which a shopping basket or the like is placed, and roughly comprises a carrier frame 150, a carrier horizontal frame 152, a receiving plate 154, and a carrier rotation bracket 156.

[0038] The bed frame 150 is a pair of round bars extending parallel to each other in a generally straight line in the front-rear direction. The bed horizontal frames 152 are a pair of round bars extending parallel to each other in a generally straight line in the left-right direction. The pair of bed frames 150 and the pair of bed horizontal frames 152 form the bed 104, which is generally rectangular in plan view.

[0039] In addition, a curved frame 158 is disposed between the end of the loading platform frame 150 and the end of the loading platform horizontal frame 152, and the corners of the approximately rectangular loading platform 104 are formed into arc shapes.

[0040] Furthermore, in a side view (FIG. 5), these curved frames 158 are bent so as to rise toward the outside of the loading platform 104 (the front-rear direction of the cart 100). As a result, when the cart 100 is unfolded (when the loading platform 104 is horizontal), the height of the loading platform horizontal frame 152 is higher than the height of the loading platform frame 150.

[0041] The receiving plate 154 is a rectangular plate material installed between a pair of bed frames 150, and in this embodiment, two receiving plates 154 are arranged in the front-rear direction with a small gap between them. Of course, the number of receiving plates 154 is not limited to this, and may be one or three or more.

[0042] The bed rotation bracket 156 is a plate member protruding downward from the underside of the bed frame 150 at approximately the center in the longitudinal direction of the pair of bed frames 150. The bed frame 150 is rotatably attached to the rear frame 116 (and the connecting member 119) via the bed rotation bracket 156.

[0043] As shown in FIG. 5, the center position B of the horizontal front-rear length of the loading platform 104 includes the center position C of the horizontal front-rear length of the base surface A and is located rearward of the center position C.

[0044] Returning to FIG. 1 to FIG. 6, the handle 106 is generally integrally formed with a pair of handle frames 160, a pair of handle side portions 162, a pair of handle curved portions 164, and a handle horizontal portion 166.

[0045] The handle frame 160 is attached to the upper end of the frame 102 and is a straight round bar member that faces obliquely upward and rearward.

[0046] The handle side portions 162 are round bar-shaped members that extend obliquely upward and forward from the upper ends of the handle frames 160 .

[0047] The handle bent portion 164 is a round bar-shaped member that bends from the upper end of each handle side portion 162 toward the center.

[0048] The handle horizontal portion 166 is a round bar-shaped member extending in the left-right direction, with one end connected to the tip of one handle bent portion 164 and the other end connected to the tip of the other handle bent portion 164.

[0049] As shown in FIG. 5, the handle 106 is disposed at a position projected within a base plane A surrounded by a pivot 111 of the front wheel 110 and a rotation center 115 of the rear wheel 112.

[0050] As described above, the tip of the handle frame 160 of the handle 106 is fitted into the front frame 114, and the height of the handle 106 from the ground can be adjusted by operating the handle height adjustment mechanism 108 to adjust the length of the handle frame 160 fitted into the front frame 114.

[0051] As shown in Figures 8 to 10, the handle height adjustment mechanism 108 is roughly composed of an operation unit upper cover 170, an operation unit lower cover 172, an operation button 174, an operation button biasing member 176, an operation 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.

[0052] The operation unit upper cover 170 is a member that is installed between the pair of handle frames 160, and has a shape like a cylinder cut in half, with the lower half missing.

[0053] The operation unit lower cover 172 is a member formed in a shape capable of covering the lower half (the missing portion) of the above-mentioned operation unit upper cover 170. In addition, an operation button hole 190 through which the operation button 174 appears and disappears is formed in the longitudinal center of the operation unit lower cover 172.

[0054] The operation button 174 is a member attached in an operation button hole 190 formed in the operation unit lower cover 172, and the user can adjust the height of the handle 106 by pressing the operation button 174 (into the operation button hole 190). Note that in a natural state (a state in which the user is not touching the operation button 174), the tip of the operation button 174 protrudes from the operation button hole 190.

[0055] The operation button biasing member 176 is a member that biases the operation button 174 in a direction in which the tip of the operation button 174 protrudes from the operation button hole 190, and in this embodiment, a helical spring is used. Of course, the member is not limited to a helical spring as long as it can bias the operation button 174.

[0056] The operation wire 178 is a member that transmits the operation of the operation button 174 by the user to a wire interlocking member 186 housed in the tip of the handle frame 160. In this embodiment, two operation wires 178 are used, and one end of each is arranged so as to abut against the operation button 174 at the center in the longitudinal direction of the operation unit upper cover 170, passes through the internal space formed by the operation unit upper cover 170 and the operation unit lower cover 172 and the inside of the handle frame 160, and is arranged at a position where the other end engages with the wire interlocking member 186 housed in the tip of the handle frame 160.

[0057] The wire guide 180 is a member for converting the movement of the operation wire 178 from the operation direction of the operation button 174 by the user (i.e., the up-down direction) to the left-right direction, and in this embodiment, a substantially circular plate-shaped member is used.

[0058] This disk-shaped wire guide 180 is rotatably held by the operation unit upper cover 170, and the operation wire 178 is disposed so as to run along a part of the peripheral surface of the disk-shaped wire guide 180.

[0059] As a result, 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 lateral movement.

[0060] The positioning pin member 182 is a member arranged within the tip of the handle frame 160, and has a pin portion 194 that protrudes from a pin hole 192 formed in the side of the tip of the handle frame 160, an interlocking member insertion hole 196 into which the wire interlocking member 186 is inserted and slid, and a biased portion 198 that is pressed and biased by the positioning pin biasing member 184.

[0061] A pin member sliding groove 201 along which the positioning pin member 182 slides is formed in the holder 188, and the positioning pin member 182 slides within the handle frame 160 in a direction perpendicular to the longitudinal direction of the handle frame 160 along this pin member sliding groove 201.

[0062] Of the inner surfaces of the interlocking member insertion hole 196, the surface that comes into contact with and slides against 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 with a cross section that goes inward toward the cart 100 as it goes downward.

[0063] In this embodiment, the biased portion 198 has a surface perpendicular to the movement direction of the positioning pin member 182 so that the biasing force from the positioning pin biasing member 184 can be received in the movement direction of the positioning pin member 182 (left and right direction in the figure).

[0064] Positioning pin biasing member 184 is a member having one end abutting against biased portion 198 of positioning pin member 182 and the other end abutting against a surface facing biased portion 198 (a surface within holder 188), and is configured to constantly apply a pressing force to move positioning pin member 182 to the right in the figure. In this embodiment, a helical spring is used as positioning pin biasing member 184. Of course, the member is not limited to a helical spring as long as it can bias positioning pin member 182 with a pressing force.

[0065] The wire interlocking member 186 is a member that engages with the other end of the operating wire 178, and is inserted into an interlocking member insertion hole 196 in the positioning pin member 182. Also, an interlocking member sliding groove 202 along which the wire interlocking member 186 slides is formed in the holder 188, and the wire interlocking member 186 slides within the handle frame 160 along the interlocking member sliding groove 202 in parallel to the longitudinal direction of the handle frame 160.

[0066] Similarly to the inclined surface 200, the interlocking member inclined surface 204 of the wire interlocking member 186, which is in contact with the inclined surface 200 of the positioning pin member 182, is a surface that is not perpendicular to the moving direction of the positioning pin member 182. For example, in the present embodiment shown in Fig. 10, the interlocking member inclined surface 204 is formed so that its cross section extends inwardly toward the inside of the cart 100 as it extends downward.

[0067] The holder 188 is a member that is fixed inside the tip portion of the handle frame 160, and has the pin member sliding groove 201 and the interlocking member sliding groove 202 as described above.

[0068] With the handle height adjustment mechanism 108, when the user presses the operation button 174 upward, the operation wire 178 passing between the operation unit upper cover 170 and the operation unit lower cover 172 is pulled laterally by the wire guide 180. Then, as shown in FIG. 11, at the lower end of the handle frame 160, the wire interlocking member 186 is pulled upward by the operation wire 178, and the interlocking member inclined surface 204 of the wire interlocking member 186 presses the inclined surface 200 of the positioning pin member 182 to the left side in the figure. As a result, the positioning pin member 182 moves to the left side in the figure against the biasing force of the biasing member 142, and the pin portion 194 enters the pin in / out hole 192, and the engagement between the pin portion 194 and the height adjustment hole 206 in the front frame 114 is released, so that the height of the handle 106 can be adjusted up or down.

[0069] When the handle 106 reaches the desired height, the hand is released from the operation button 174. Then, the operation button 174 moves downward due to the biasing force of the operation button biasing member 176, and in conjunction with this, the wire interlocking member 186 is pulled downward by the operation wire 178. When the wire interlocking member 186 is pulled down, the pressing force of the wire interlocking member 186 against the positioning pin member 182 is eliminated, so that the biasing force from the positioning pin biasing member 184 moves the positioning pin member 182 to the right in the figure, and the pin portion 194 protrudes from the pin hole 192 again. In this way, the height of the handle 106 can be adjusted.

[0070] Next, an example of a shopping basket 300 placed on the cart 100 will be described with reference to Figures 12 to 14. The shopping basket 300 generally comprises a shopping basket frame 302 and a main body 304.

[0071] The shopping basket frame 302 is composed of a frame body 310 and a pair of handle members 312.

[0072] Frame body 310 is a ring-shaped frame member with a substantially rectangular periphery in a plan view and a circular cross section. In addition, the center of a pair of longitudinal members in frame body 310 has an upwardly protruding arch-shaped portion 306, which allows a user to grip when carrying shopping basket 300.

[0073] Handle member 312 is a member having a U-shaped appearance, and is disposed between a pair of longitudinal members of frame body 310, each of which is disposed near the end of arch-shaped portion 306. Also, handle member 312 is rotatably attached to frame body 310, so that handle member 312 can be rotated relative to frame body 310 to be lifted for use, and handle member 312 can be aligned along the top of frame body 310 as shown in the figure to lower the overall height of shopping basket 300.

[0074] The main body 304 is a lidless box-shaped member made of a highly strong and flexible fabric or the like, and the frame main body 310 can be detachably attached to the upper open end thereof.

[0075] Further, a pair of plate materials 308 having a harderness than the fabric or the like that mainly constitutes the main body 304 are disposed on a pair of inner wall surfaces of the main body 304 that are perpendicular to the longitudinal direction. Only the upper end edge of each of these plate materials 308 is attached to the main body 304, so that when the shopping basket 300 is used, the plate materials 308 are aligned along the inner wall surfaces of the main body 304 as shown in Fig. 12, and when the shopping basket 300 is stored, the lower end edge of the plate materials 308 is pulled up as shown in Fig. 14, making it easy to fold the main body 304.

[0076] (Features of Cart 100) In the cart 100 of this embodiment, the handle 106 and the link shaft 133 are positioned at a position projected within the base surface A surrounded by the pivot axis 111 of the front wheel 110 and the center of rotation 115 of the rear wheel 112, and the center position B of the horizontal fore-aft length of the loading platform 104 includes the center position C of the horizontal fore-aft length of the base surface A and is located rearward of the center position C.

[0077] This reduces the risk of the cart 100 tipping over even if the user applies a downward load to the handle 106, and the weight of a shopping basket 300 or the like placed on the loading platform 104 is borne by the rear wheels 112 rather than the front wheels 110, making it possible to provide a cart 100 that is easy for the user to push via the handle 106 and has good maneuverability.

[0078] In addition, the handle 106 is attached to the upper end of the frame 102 and comprises a pair of handle frames 160 facing diagonally upward and rearward, a pair of handle side portions 162 facing diagonally upward and forward from the upper end of each handle frame 160, a pair of handle bent portions 164 that bend from the upper end of each handle side portion 162 toward the center, and a handle horizontal portion 166 having one end connected to the tip of one of the handle bent portions 164 and the other end connected to the tip of the other handle bent portion 164 and extending in the left-right direction.As a result, the position of the handle 106 is positioned further forward, making it possible to provide a cart 100 that is easier to push via the handle 106 and has good maneuverability.

[0079] Furthermore, with regard to the handle height adjustment mechanism 108, an operation unit upper cover 170 is installed between a pair of handle frames 160, and an operation button 174 is provided in the center of the operation unit upper cover 170. This separates the handle 106 used when pushing the cart 100 and the operation button 174 operated when adjusting the height, allowing the height adjustment to be performed smoothly.

[0080] In addition, when the cart 100 is in the unfolded state, when the user lifts the other end side of the operating body 140 upward against the biasing member 142 of the folding operating member 124, the engagement between the engaged member 144 of the front frame 114 and the engagement portion 146 of the operating body 140 is released.

[0081] In the disengaged state, 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 moved relatively closer to each other, the slider 134 and the interlocking member 136 attached to one end of the first member 130 of the link member 120 move downward along the slit 138 of the front frame 114, and accordingly the front frame 114 and the rear frame 116 move relatively closer to each other, and the loading platform 104 stands up with the front end side facing up (see Figs. 15 and 16). In this way, the cart 100 according to this embodiment can be folded with a simple operation.

[0082] In addition, in the loading platform 104 according to this embodiment, the height of the loading platform side frame 152 is set higher than the height of the loading platform frame 150. As a result, as shown in Fig. 17, when a shopping basket 300 or the like is placed on the receiving plate 154 of the loading platform 104, the loading platform side frame 152 acts as a stopper in the front-rear direction of the cart 100, so that the shopping basket 300 or the like does not undesirably slide off the loading platform 104. In addition, the loading platform side frame 152, which is located higher than the receiving plate 154, also serves as a handle when the user lifts the entire cart 100.

[0083] In addition, the arch-shaped rear mounting frame 122 is arranged so as to be convex toward the direction of travel (front) of the cart 100, so that the feet of a user pushing the handle 106 to move the cart 100 forward are less likely to hit the rear mounting frame 122.

[0084] The embodiments disclosed herein should be considered to be illustrative and not restrictive in all respects. The scope of the present invention is defined by the claims, not the above description, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0085] 100: cart, 102: frame, 104: loading platform, 106: handle, 108: handle height adjustment mechanism 110...front wheel, 111...swivel shaft (of front wheel 110), 112...rear wheel, 113...brake mechanism, 114...front frame, 115...center of rotation (of rear wheel 112), 116...rear frame, 118...front installation frame, 119...connecting member, 120...link member, 122...rear installation frame, 124...folding operation section, 126...first mounting section (of connecting member 119), 128...second mounting section (of connecting member 119), 130...first member, 132...second member, 133...link shaft, 134...slider, 136...interlocking member, 138...slit, 140...operation body, 142...urging member, 144...engaged member, 146...engagement section 150: Cargo bed frame, 152: Cargo bed horizontal frame, 154: Support plate, 156: Cargo bed pivot bracket, 158: Bent frame 160: Handle frame; 162: Handle side; 164: Handle bend; 166: Handle lateral portion 170...operation unit upper cover, 172...operation unit 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 outlet hole, 192...pin outlet 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 adjustment hole 300: shopping basket; 302: shopping basket frame; 304: main body; 306: arch-shaped portion; 308: plate material; 310: frame main body; 312: handle member A...basal surface

Claims

1. The vehicle comprises a frame, a pair of front and rear wheels attached to a lower end of the frame, a handle provided at an upper end of the frame, and a loading platform disposed on the frame between the handle and the front and rear wheels in the vertical direction, the frame includes a pair of front frames to which the front wheels are attached and a pair of rear frames to which the rear wheels are attached, a connecting member connected to upper ends of the rear frames, and a link member having a link shaft for folding the bicycle by shortening the relative distance between the front wheels and the rear wheels, The front wheel is a swivel wheel having a swivel shaft, The rear wheel is a fixed wheel, The handle has a handle side portion extending in the left-right direction, the handlebar side portion and the link shaft are disposed at positions projected within a base plane surrounded by the pivot axis of the front wheel, the rotation centers of the pair of rear wheels, and the intersection points of the rear wheels in a plan view, a center position of the horizontal front-rear direction length of the loading platform is the center position of the horizontal front-rear direction length of the base surface, or is located rearward of the center position of the horizontal front-rear direction length of the base surface, The position in the horizontal fore-aft direction at which the connecting member is connected to the front frame is forward of the center position of the length of the loading platform in the horizontal fore-aft direction. cart.

2. The handle is A pair of handle frames are attached to the upper end of the frame and face obliquely upward and rearward; A pair of handle side portions extending obliquely upward and forward from the upper end of each of the handle frames; A pair of handle bends each of the handle sides bent from an upper end toward a center; The handle horizontal portion has one end connected to a tip of one of the handle curved portions and the other end connected to a tip of the other handle curved portion, and extends in the left-right direction. The cart of claim 1.

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