JPH0630594Y2 - Shopping car - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a shopping car.

“Prior Art” There is a device (actual development Sho 59-64364) in which the distance between the front wheels and the rear wheels can be changed in order to facilitate the use of stairs for luggage and the like on stairs. In addition, most of the wheels have front and rear protruding chassis.

[Problems to be solved by the invention] The invention according to Japanese Utility Model Laid-Open No. 59-64364 discloses a pair of front legs and a pair of fixed wheels rotatably supported on a right-angled frame fixed to the lower ends of the front legs. And a frame in which the upper end is rotatably supported on the front leg, the movable wheel is rotatably supported on the lower end of the rear leg that can be opened and closed, the rear leg is closed, and the axle of the movable wheel is rotatably supported by the fixed wheel. When fixed to, the moving wheels are located behind the two fixed wheels, and the rotation axes of the fixed and moving wheels are inclined in a straight line toward the upper rear, and further the wheels are sequentially rearward. The diameter is made smaller toward, and the moving wheels and the two fixed wheels are sequentially grounded on the tread of the stairs so that the stairs can be moved up and down.

When pushing up and down the stairs by propelling the SHYOTSU pink car whose front and rear wheels are protruding to the outside of the chassis, the width of the treads of the stairs is very narrow compared to the wheelbase, and the front and rear wheels are separated by the treads adjacent to the top and bottom. It is very difficult to push the stairs to climb because it rides, and it is rather difficult to climb with a shopping cart and it is a pain for women etc.When descending the stairs, the front and rear wheels alternate on the stepped tread. In addition, because it pushes while dropping suddenly, there is a risk of damage to the loaded luggage due to a large impulse applied to the chassis and the chassis itself, and the accelerating force acts on the shopping car and it is mistakenly released. It is dangerous and dangerous.

"Means for solving problems" 1. A front wheel suspension member is erected on the upper surface of the front wheel cover to which the front wheel is attached, and the upper end of the front wheel suspension member is pivotably attached to the front side of the lower surface of the cargo bed.

2. The front lateral rod is connected between the front wheel suspension members, and the front end of the front connecting rod, whose rear half is formed in a bifurcated shape, is connected to the center of the front lateral rod in a T-shape.

3. A gate-shaped handle rod is erected at the rear of the loading platform, the elevating member is laid horizontally in an H shape between the open legs near the lower part, and the tow rod is fixed downward to the elevating member, and the tow rod is raised and lowered at hand. Let

4. A rear wheel suspension member is erected on the upper surface of the rear wheel cover to which the rear wheel is attached, and the upper end of the rear wheel suspension member is pivotably pivoted to the rear of the lower surface of the luggage carrier.

5. Connect both ends of the rear horizontal rod across the rear wheel suspension members and connect the upper end of the front end of the rear connecting rod with the front end bent downward to form a hook to the forked part of the front connecting rod. The ends are connected to the rear transverse rod in a T-shape.

6. A front side wall of the channel material is extended upward to form a hook, and a supporting rod that is detachably engaged with the hook of the rear connecting rod is laid across the front side wall to form an operating member, and A tension spring is suspended and supported as needed over appropriate places on the lower surface of the operating member and the bed, and urged upward, and the rear end of the operating member is connected to the lower end of the tow rod.

With the above structure, it is easy for a woman to push, and it is easy to climb stairs.Tip the steering wheel toward you to lift the front wheel and roll the rear wheel to pull the shopping car. With the goal.

"Action" When the front and rear wheels are pulled out to the front and rear of the chassis, and the operation of pulling up the tow rod with the handle rod is carried out, the rear end of the operating member connected to the lower end of the tow rod is pulled up. Since the hook supporting the rear connecting rod moves down, the hook part of the rear connecting rod also moves down, and the rear horizontal rod connected to the rear end of the rear connecting rod moves forward and the hook provided on the operating member. Abuts on the bent portion of and is locked. At this time, the rear connecting rod is supported by the supporting rod provided on the front part of the operating member, and the rear wheel hanging member swings toward the center of the luggage bed by the movement of the rear horizontal rod, and the rear wheel cover also Both swing to the center of the platform.
When the hook of the rear connecting rod moves down, the connecting part of the front connecting rod, which is integrally connected to the hook, moves down, and the front horizontal rod connected to the front connecting rod in a T-shape moves to the center side of the loading platform. The front wheel cover connecting the front side rails also swings toward the center of the loading platform, so that the front wheels and the rear wheels move toward each other and the height of the shopping car increases.

[Embodiment] An embodiment of the present invention will be described with reference to the drawings. A front wheel suspension member (3) is erected near the rear part of the upper surface of the front wheel cover (2) to which the front wheel (1) is attached to suspend the front wheel. Attach the top of the member (3) to the bed (4)
It is pivotally attached to the front of the lower end of.

The front lateral rod (5) is connected between the front wheel suspension members (3) and (3), and the rear half is formed into a forked portion (6a).
The tip of (8) is connected to the central part of the front horizontal rod (5) in a T shape, and the front connecting rod (6) is a pair of guide plates hung from the lower surface of the loading platform (4).
(4a) Moves back and forth linearly due to (4a). The gate-shaped handle rod (7) is erected on the rear of the loading platform (4) and the open legs near the bottom of it.
(7a) The elevating member (8) is laid horizontally in the shape of (7a), and the tow rod (9) is fixed to the elevating member (8) downward so that the tow rod (9) can be moved up and down by hand. A lever (not shown) on the upper part of the handle rod (7). Rear wheel cover with rear wheel (10) attached
Stand the rear wheel suspension member (12) near the front of the upper surface of (11),
The upper end of the rear wheel suspension member (12) is pivotally attached to the rear of the lower surface of the loading platform (4) in a swingable manner. The rear lateral rod (13) is connected across the rear wheel suspension members (12) (12), and the front end upper part of the rear connecting rod (14) is formed by bending the front end downward and forming the hook (14a). It is connected to the forked portion (6a) of the connecting rod (6) and the rear end is connected to the rear lateral rod (13) in a T-shape. A front side wall of the channel material is extended upward to form a hook (15a) and a support rod (15) that is detachably engaged with the hook (14a) of the rear connecting rod (14).
b) is laid across the front side walls to form the operating member (15), and the operating member (15) and the lower surface of the loading platform (4) are hung and supported by tension springs (16). At the same time, it urges upward, and further connects the rear end of the operating member (15) to the lower end of the tow rod (9). Bend both ends in the same direction to form an L shape
a) is projected and the tip of the arm (17a) is axially guided from both ends of the brake rod (17) pivotally attached to the opposite side walls of the rear wheel cover (11) with pins (18) and (18), respectively. Pin (17b)
(17b) is projected integrally. Arc-shaped guide holes (11a) (11a) are respectively provided on the opposite side walls of the rear wheel cover (11), and the guide pins (17b) of the brake rod (17) are gently fitted and inserted into the guide holes (11a), In addition, the brake rod (17) and the rear wheel cover (1
It is constructed by hanging a tension spring (19) over 1).

"Effect of device" Since the device of this invention is constructed in this way,
Pull up the tow rod (9) with your hand and move the front part of the operating member (15) downward against the tensile force of the tension spring (16) to move the support rod.
(15b) and the hook (14a) of the rear connecting rod (14) are disengaged and the supporting rod (15b) moves along the lower edge of the rear connecting rod (14), so that the rear connecting rod (14) The front part moves downward, and the front part connecting rod connected to the rear part connecting rod (14) along with the movement.
(6) The rear part also moves downward, and accordingly, the rear lateral rod (13) connected to the rear connecting rod (14) in a T shape moves forward and is connected to both ends of the rear lateral rod (13). Rear wheel suspension member (12)
Swing toward the center of the bottom surface of (4). Along with this swing, the guide pin (17b) of the brake rod (17) is moved downward by being guided by the guide hole (11a) of the rear wheel cover (11), and the brake rod (17) is moved to the loading platform (4). Of the rear wheel (10) because the guide pin (17b) is locked to the end of the guide hole (11a) and fixed by the tensile force of the tension spring (19).
Move to the center of (4). Further, since the rear part of the front connecting rod (6) moves downward and the front part moves toward the lower center of the loading platform (4), the front wheel suspension member (3) and the front wheel (1) also move in the same direction. However, the front wheel (1) and the rear wheel (10) are closer to each other and are located closer to their original position, that is, the position where the tow rod (9) is not pulled up, than the load platform (4)
Since it projects downward, the vehicle height of the shopping car becomes high, and the distance between the axles of the front wheels (1) and the rear wheels (10), that is, the wheelbase becomes short. Therefore, the front wheels over the adjacent treads of the stairs
The (1) and the rear wheel (10) are surely landed, and in that state they can be pushed forward to safely and easily ascend and descend the stairs. Further, since the vehicle can be lifted and lowered without giving a strong shock to the vehicle, there is no risk of damaging the vehicle or dropping the loaded article. Alternatively, the steering wheel rod (7) can be tilted while the front wheel (1) and the rear wheel (10) are being brought close to each other to float the front wheel (1) in the air and tow a shopping car. At this time, the axle of the rear wheel (10) is
Since it is located closer to the center of the loading platform (4) than the mounting position of (7), the front wheel (1) can be floated with a small force using the landing point of the rear wheel (10) as a fulcrum.

As described above, the present invention is a useful structure suitable for the elderly, because the structure is robust, highly durable, easy to manufacture.

[Brief description of drawings]

FIG. 1 is a partially sectional front view showing an embodiment of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a rear view thereof. (1) …… Front wheel, (2) …… Front wheel cover, (3) …… Front wheel suspension member, (4) …… Luggage bed, (5) …… Front side bar, (6) …… Front station Rod, (6a) ...... bifurcated part, (7) ...... handle rod, (7a) ...... open leg, (8) ...... lift member, (9) ...... tow rod, (10) ...... rear wheel , (11) …… Rear wheel cover, (11a) …… Guide hole, (12)…
… Rear wheel suspension member, (13) …… Rear side rod, (14) …… Rear link rod, (14a) …… Hook, (15) …… Motion member, (15a) …… Hook, (15b) …… Support rod

Claims (1)

[Scope of utility model registration request] 1. A front wheel suspension member is erected on an upper surface of a front wheel cover to which front wheels are attached, and an upper end of the front wheel suspension member is pivotably pivoted forward of a lower surface of a luggage carrier, and a front portion extends between lower portions of the front wheel suspension member. While connecting both ends of the horizontal rod, the front end of the front connecting rod, which is formed in a bifurcated shape at the rear half, is pivotally attached to the center of the front horizontal rod in a T-shape, and a gate-shaped handle rod is set up at the rear of the platform. The upper and lower parts of the rear wheel cover are attached to the lower part of the rear wheel cover. A rear wheel suspension member is erected on the upper end of the rear platform, and the upper end of the rear wheel suspension member is pivotally attached to the rear of the lower surface of the luggage platform so as to swing freely. The front end upper portion of the rear connecting rod, which is bent to form a hook, is pivotally attached to the forked portion of the front connecting rod, and A rear end of which a rear end is pivotally attached to the center of the rear lateral rod in a T-shape, and a front side wall of the channel member is extended upward to form a hook, and which is detachably engaged with the hook of the rear connecting rod. Of the channel member is horizontally slid across the front end of the channel member to form an operating member, and the rear end of the operating member is pivotally attached to the lower end of the tow rod.