초록 ▼

A shopping cart comprises a support seat provided therein with tracks, and a support frame supporting the support seat. The support frame comprises a first support frame and a second support frame disposed across each other and rotatably connected. Bottoms of the first and second support frames are

A shopping cart comprises a support seat provided therein with tracks, and a support frame supporting the support seat. The support frame comprises a first support frame and a second support frame disposed across each other and rotatably connected. Bottoms of the first and second support frames are installed with wheels; and tops thereof are installed in and movable along the tracks. When in use, by moving the tops of the first support frame and the second support frame respectively to two ends of the tracks to press against them and placing goods on the support seat, the goods can be carried freely without handbags, greatly saving physical strength and being convenient and efficient; and when not in use, the shopping cart can be folded and placed in a trunk of a vehicle for later use, thus occupying small room due to the small size and being convenient to carry.

대표청구항 ▼

1. A shopping cart, comprising: a support seat and a support frame supporting the support seat, wherein:the support seat is provided therein with tracks;the support frame comprises a first support frame and a second support frame;the first support frame and the second support frame are disposed acro

1. A shopping cart, comprising: a support seat and a support frame supporting the support seat, wherein:the support seat is provided therein with tracks;the support frame comprises a first support frame and a second support frame;the first support frame and the second support frame are disposed across from each other and rotatably connected;both bottoms of the first support frame and both bottoms of the second support frame are installed with wheels;a top of the first support frame and a top of the second support frame are both installed in the tracks, and both the top of the first support frame and the top of the second support frame are movable along the tracks;the support seat is formed by a U-shaped circular tube and two angle irons;the U-shaped circular tube comprises two vertical tube portions and a horizontal tube portion, the vertical tube portions are bent in parallel to each other where joined to the horizontal tube portion;the angle irons are mounted on the U-shaped circular tube and parallel to the vertical tube portions;a handle frame is mounted at an open end of the U-shaped circular tube;the first support frame comprises a first cross bar and two first support rods located at both ends of the first cross bar, one end of each of the two first support rods is fixedly connected with the first cross bar, and the other end of each of the two first support rods is installed with one of the wheels;the second support frame comprises a second cross bar and two second support rods located at both ends of the second cross bar, one end of each of the two second support rods is fixedly connected with the second cross bar, and the other end of each of the two second support rods is installed with one of the wheels;both the first cross bar and the second cross bar are installed in the tracks and slidable within the tracks;the second support rod is an oval tube, and comprises a first connecting rod and a second connecting rod rotatably connected with the first connecting rod and having an arc-shape cut at an upper end;the second cross bar and the first connecting rods are circular tube-shaped and formed integrally, and form an angle with each other; andby inserting the first connecting rods into the arc-shape cut at the upper ends of the second connecting rods and horizontally fixing by rivets, the second cross bar is rotatably connected with the second connecting rods. 2. The shopping cart according to claim 1, wherein the support seat is installed with the handle frame; the shopping cart further comprising pressing units pressing the support frame, and the pressing units are close to the handle frame and located at one end portion of each of the tracks. 3. The shopping cart according to claim 2, wherein the pressing unit comprises a pressing member and first springs, the pressing member is movable perpendicularly to a direction of the track, the first springs are arranged between the pressing member and the support seat, and the track, corresponding to the position of the pressing member is provided with at least one clamping groove engaging the support frame. 4. The shopping cart according to claim 3, wherein the at least one clamping groove comprises more than one clamping grooves serially arranged on an upper side of the track, a lower side of the track corresponding to the positions of the clamping grooves is provided with a recess, the recess has a first flange, the pressing member is embodied as a cover body, a rabbet of the cover body has a second flange, a bottom of the cover body is located outside the recess, the second flanges are located in the recess, and the first springs are located between the bottom of the cover body and the recess. 5. The shopping cart according to claim 3, wherein the first support frame comprises a first cross bar and two first support rods located at both ends of the first cross bar, one end of each of the two first support rods is fixedly connected with the first cross bar, and the other end of each of the two first support rods is installed with the wheels; the second support frame comprises a second cross bar and two second support rods located at both ends of the second cross bar, one end of each of the two second support rods is fixedly connected with the second cross bar, and the other end of each of the two second support rods is installed with the one of the wheels; and both the first cross bar and the second cross bar are installed in the tracks, the first support rod and the second support rod are rotatably connected with each other, and the first cross bar, compared to the second cross bar, is closer to the clamping grooves. 6. The shopping cart according to claim 5, wherein the second support rod comprises a first connecting rod, a second connecting rod rotatably connected with the first connecting rod, and a rotation limiting structure, and the first connecting rod and the second connecting rod are connected through the rotation limiting structure. 7. The shopping cart according to claim 5, wherein each of the second support rods comprises the first connecting rod, the second connecting rod, a fastening rod, a second spring, an unlocking rod and a third spring; both the first connecting rod and the second connecting rod are provided with through holes allowing the fastening rod to pass through, the fastening rod is located within the through holes and movable along the through holes, both ends of the fastening rod have a protrusion pressing against the through hole, the third spring is sleeved on the fastening rod and located between the protrusion and the first connecting rod or the second connecting rod, the first connecting rod has a locking element, and the second connecting rod has a locking hole matching the locking element; andthe unlocking rod has a diameter variation section, and the variation section is provided between the first connecting rod and the second connecting rod, and presses against the first connecting rod and the second connecting rod; and the unlocking rod has an end cover at an end, and the second spring is sleeved outside the unlocking rod, and located between the end cover and the first connecting rod or the second connecting rod. 8. The shopping cart according to claim 5, wherein a leaf spring is arranged between the first connecting rod and the second connecting rod, the leaf spring and the locking element are rotatably connected with each other, and the diameter variation section is located between the locking element and the second connecting rod. 9. The shopping cart according to claim 5, wherein a third cross bar is connected between the two first support rods or between the two second support rods. 10. The shopping cart according to claim 1, wherein the support seat is detachably installed thereon with a shopping basket. 11. The shopping cart according to claim 1, wherein the first support rods and the second support rods are horizontally fixed by rivets and rotatably connected together, and a third cross bar is connected between the two first support rods. 12. The shopping cart according to claim 1, wherein the second cross bar is provided with a left circular position-limiting sliding block and a right circular position-limiting sliding block, respectively, at outer edges of the angle irons at a left side and a right side, and the left circular position-limiting sliding block and the right circular position-limiting sliding block are fixedly connected with the second cross bar through welding. 13. The shopping cart according to claim 1, wherein the shopping cart further comprises a height regulating device, the height regulating device comprises an upright base, a retractable arm, a screw rod, a swing arm base and a swing arm, wherein the upright base is fixedly connected onto the angle irons of the support seat; the retractable arm is composed of a tetragonal nut, a circular tube and an arc-shaped pushing arm which are fixedly connected; a radius of a tail end of the screw rod is smaller than that of a main body of the screw rod; the swing arm base is fixedly connected with the screw rod passing through the upright base and is rotatable relative to the upright base; and the swing arm and the swing arm base are rotatably connected. 14. The shopping cart according to claim 1, wherein a lock hook is provided at the middle of the first cross bar, and the lock hook the arc-shaped pushing arm of the height regulating device. 15. The shopping cart according to claim 14, wherein a protruding pin is provided on a handle of the swing arm, and a bottom plate of the upright base is provided with two pin holes receiving the protruding pin. 16. The shopping cart according to claim 1, wherein a foldable shopping basket is detachably installed on the support seat, and the handle frame is retractable. 17. The shopping cart according to claim 16, wherein the handle frame is made of a bent circular tube with a radius smaller than those of the vertical tube portions of the support seat, the handle frame is fixed on the support seat through fixing seats and fastening nuts, and an anti-loosening stopper is provided between the handle frame and the support seat. 18. The shopping cart according to claim 17, wherein both the handle frame and the horizontal tube portion of the U-shaped circular tube of the support seat are wrapped with foam sponge.