Novel stroller frame

Abstract

The invention relates to a novel stroller frame, and belongs to the technical field of production of baby products. The stroller folding joint assemblies are connected with a seat connecting piece of the seat basket assembly through rivets, the bottom end of the rear foot assembly is provided with the rear wheel assembly through the rear wheel seat assembly, the bottom end of the front foot assembly is provided with the front wheel assembly, and the front foot assembly comprises a front foot fixing pipe and is connected with the corresponding stroller folding joint assembly through the front foot pipe. The lower push rod assembly comprises two parallel lower push rods, the tops of the two front wheel seats are connected with the lower push rods through reversing seats correspondingly, and the two ends of the two lower push rods are connected with the two ends of the upper push rod assembly in an inserted mode correspondingly. The two folding joint assemblies are provided with front foot joints connected with the front foot pipes and reversing locking mechanisms detachably connected with the lower push rods. The push rod assembly has the beneficial effects that the upper push rod assembly can be turned forwards or backwards in cooperation with the lower push rod assembly, switching between the pushing position and the dragging position is achieved, and dragging or pushing is more stable.

Description

Technical Field

[0001] The invention relates to a novel child stroller frame, belonging to the technical field of production of infant and child products. Background Art

[0002] Strollers provide great convenience for adults to carry small children for outdoor activities, so they have gradually become a necessity for adults to carry children for outdoor activities. To facilitate the carrying and storage of strollers, the stroller frames that make up strollers are generally foldable. There are many types of strollers available, and the number of stroller frame rods is different, and the connection positions between the rods are different, so the folding principles, folding methods and folded effects are different.

[0003] For example, the invention with patent number 202010771183.2 discloses a stroller frame, a front wheel assembly arranged at the bottom front part of the stroller frame, a rear wheel assembly arranged at the bottom rear part of the stroller frame, and a seat bag assembly arranged on the stroller frame, wherein the stroller frame includes a push rod and a sliding member slidably arranged on the push rod along the length extension direction of the push rod, and the seat bag assembly is arranged on the sliding member. When the child stroller is converted from the unfolded state to the folded state, the push rod flips backward and downward, and the sliding member slides along the length extension direction of the push rod, driving the seat bag assembly to synchronously slide relative to the push rod with the sliding member and approach the push rod. The seat bag assembly of the child stroller can be folded synchronously with the stroller frame, so that the folding operation of the child stroller is convenient. Moreover, the child stroller has a compact structure and a small size after being folded, which is easy to carry and store.

[0004] The current technology is not comprehensive and has the following disadvantages: 1. It is impossible to switch the stroller between the pushing position and the towing position, which makes the stroller inconvenient to use. 2. The steps of disassembling and installing the dining tray assembly are cumbersome.

[0005] In order to solve one of the above problems, a new type of child stroller frame is urgently needed. Summary of the invention

[0006] In view of the above deficiencies in the prior art, the technical problem to be solved by the present invention is: how to achieve switching between a pushing position and a towing position so that towing or pushing is more stable, and a new type of child stroller frame is provided for this purpose.

[0007] The new child stroller frame described in the present invention comprises an upper push rod assembly, a lower push rod assembly connected with the upper push rod assembly, and a seat basket assembly with a surrounding frame, characterized in that it also includes a vehicle collection joint assembly connected with the rear foot assembly and the front foot assembly, the vehicle collection joint assembly is connected to the seat connecting piece of the seat basket assembly through rivets, the bottom end of the rear foot assembly is equipped with a rear wheel assembly through a rear wheel seat assembly, and the bottom end of the front foot assembly is equipped with a front wheel assembly, the front foot assembly comprises a front foot fixing tube, and a group of front wheel seats are respectively installed at both ends of the front foot fixing tube, and the bottoms of the two groups of the front wheel seats are both equipped with front wheel assemblies and are connected to the corresponding vehicle collection joint assembly through the front foot tubes, the lower push rod assembly comprises two groups of parallel lower push rods, the tops of the two groups of the front wheel seats are respectively connected with a group of lower push rods through a reversing seat, the two ends of the two groups of lower push rods are respectively plug-connected with the two ends of the upper push rod assembly, and the two groups of the vehicle collection joint assemblies are provided with a front foot joint connected with the front foot tube and a reversing locking mechanism detachably connected to the lower push rod.

[0008] Preferably, the reversing locking mechanism includes a reversing wrench seat fixed on the lower push rod, a reversing wrench is hinged on the reversing wrench seat through a reversing wrench fixing screw, and a nut is connected to the end of the reversing wrench fixing screw to limit the reversing wrench to rotate only around the center line of the reversing wrench fixing screw, the front end of the reversing wrench is provided with a buckle, and the outer wall of the forefoot joint is provided with a slot matching the buckle, and a spring is provided between the tail end of the reversing wrench and the reversing wrench seat, one end of the spring is against the positioning hole at the tail end of the reversing wrench, and the other end is against the compression spring support on the reversing wrench seat; the reversing wrench and the forefoot joint are locked by the buckle and the slot to achieve positive locking of the lower push rod, and when the two sets of reversing wrenches are pulled outward at the same time, the buckle on the reversing wrench is disengaged from the slot on the forefoot joint, thereby unlocking the lower push rod, and the lower push rod can be reversed by rotating the reversing seat.

[0009] Preferably, the reversing seat is rotatably connected to the front wheel seat via a reversing seat screw; and a vehicle hook fixing seat is installed on the front leg tube.

[0010] Preferably, the seat basket assembly includes a surrounding frame, which includes a rear seat frame tube and a front seat frame tube connected together by two sets of seat connectors, the seat connector is connected to the vehicle retracting joint assembly by rivets, and a linkage assembly is installed between the rear seat frame tube and the front foot joint.

[0011] Preferably, the linkage assembly is provided with two groups, each including a seat connecting plate hinged to the corresponding rear seat frame tube, the other end of the seat connecting plate is hinged to a rear foot connecting plate, the other end of the rear foot connecting plate is hinged to a front foot connecting plate, and the other end of the front foot connecting plate is hinged to the front foot joint.

[0012] Preferably, the vehicle folding joint assembly includes a front foot joint connected to the front foot tube and a rear foot joint connected to the rear foot tube. The rear foot tube and the front foot tube are interconnected through the rear foot joint and the front foot joint to form a rotatable folding structure. A joint gear and a joint spring are provided between the rear foot joint and the front foot joint. One end of the joint spring presses the joint gear and the other end presses the inner wall of the front foot joint. The joint spring presses the joint gear so that the joint gear, the rear foot joint and the front foot joint are all engaged with each other to form a fixed structure. The joint gear is connected to a joint cover. By pressing the joint cover, the joint cover presses the joint gear inward, so that the joint gear and the rear foot joint are disengaged from the lock to form a rotatable vehicle folding structure.

[0013] Preferably, a rear leg fixing tube is connected between the two groups of rear leg tubes, and a vehicle collecting hook is installed on the rear leg tubes.

[0014] Preferably, a storage rack assembly is detachably mounted on one end of the surrounding frame, and the storage rack assembly includes a storage tube, a storage tube upper cover, a storage tube lower cover, and a detachable storage rack seat. The storage tube upper cover and the storage tube lower cover form a circular ring shape and are sleeved on the storage tube. The detachable storage rack seat is connected to the storage tube upper cover by a screw, and a detachable storage rack fixing seat that is clamped with the detachable storage rack seat is respectively provided at both ends of the surrounding frame.

[0015] Preferably, a dining tray assembly is detachably mounted between the two groups of seat connectors, a dining tray fixing seat for mounting the dining tray assembly is mounted on the seat connector, the dining tray assembly comprises a dining tray quick-release member, an unlocking spring, a dining tray, a locking spring and a locking block, the dining tray fixing seat has a locking hole that cooperates with the locking block, the dining tray quick-release member is mounted in a vertical groove at the end of the dining tray and can slide in the vertical groove, the upper end of the unlocking spring abuts against the dining tray quick-release member, and the other end abuts against the inner side plane of the end of the dining tray, the locking block is mounted in a transverse groove at the end of the dining tray and can slide in the transverse groove, and one end of the locking spring abuts against the positioning hole on the locking block The other end is against the inner plane of the end of the dinner plate, and the bottom of the dinner plate quick release piece and the locking block are driven by the inclined surface; by pressing down the dinner plate quick release piece, the dinner plate quick release piece slides downward along the vertical groove, and under the drive of the matching inclined surface, the locking block can move along the horizontal groove toward the inner hole of the end of the dinner plate, so that the locking block is separated from the slot on the dinner plate fixing seat, so that the dinner plate assembly and the seat basket assembly are unlocked. When the hand is released, the dinner plate quick release piece is reset under the drive of the unlocking spring, and the locking block is reset under the drive of the locking spring. When both sides of the dinner plate are simultaneously inserted into the slots of the dinner plate fixing seat, the locking block enters the corresponding lock hole on the dinner plate fixing seat, so that the dinner plate assembly is locked.

[0016] Preferably, a group of canopy components are respectively arranged on the rear seat frame tube and the front seat frame tube, the canopy component installed on the front seat frame tube includes a canopy rod, and a canopy fixing seat with a canopy plug is respectively arranged at both ends of the canopy rod, and a canopy socket that is plugged and matched with the corresponding canopy plug is arranged on the front seat frame tube. The upper cover of the canopy component is provided with a connecting cloth cover, which is respectively a rear canopy and a front canopy according to the installation position, and the rear canopy and the front canopy are connected by a middle canopy by a zipper; when the zipper connecting the middle canopy with the rear canopy or the front canopy is opened, the rear canopy and the front canopy can be respectively unfolded or folded.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The new child stroller frame described in the present invention has a group of lower push rods connected to the tops of the two groups of front wheel seats through a reversing seat, and the two ends of the two groups of lower push rods are respectively plug-connected with the two ends of the upper push rod assembly. The upper push rod assembly cooperates with the lower push rod assembly to flip forward or backward to switch directions, thereby realizing switching between a pushing position or a towing position, making towing or pushing more stable.

[0018] The novel stroller frame of the present invention can press down the meal tray quick-release piece, so that the meal tray quick-release piece slides downward along the vertical groove. Driven by the matching inclined surface, the locking block can move along the horizontal groove toward the inner hole at the end of the meal tray, so that the locking block is separated from the slot on the meal tray fixing seat, so that the meal tray assembly and the seat basket assembly are unlocked. When the hand is released, the meal tray quick-release piece is reset under the drive of the unlocking spring, and the locking block is reset under the drive of the locking spring. When both sides of the meal tray are simultaneously inserted into the slots of the meal tray fixing seat, the locking block enters the corresponding locking holes on the meal tray fixing seat, so that the meal tray assembly is locked, and the operation is more convenient.

[0019] The novel child stroller frame of the present invention, after the frame is folded, the retracting hook is buckled with the retracting hook fixing seat, the frame cannot be unfolded, the front leg assembly flips forward 180 degrees, and the platform can be dragged by pulling the upper push rod, thereby saving physical strength in moving the platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0021] Figure 1 The structure of the present invention Figure 1 ; Figure 2 It is a partial exploded view of the reversing locking mechanism; Figure 3 is a commutation diagram of the present invention; Figure 4This is the installation diagram of the shelf assembly and the dining tray assembly; Figure 5 The structure of the present invention Figure 2 ; Figure 6 A folding diagram of the present invention; Figure 7 It is a usage state diagram of the present invention; Figure 8 This is an assembly diagram of the dinner plate assembly; Fig. 9 An exploded view of the dinner plate assembly; Fig.10 for Figure 5 Cross-sectional view of AA.

[0022] In the figure: 1, upper push rod assembly 2, lower push rod assembly 3, storage rack assembly 4, seat basket assembly 5, linkage assembly 6, car collection joint assembly 7, rear foot assembly 8, rear wheel assembly 9, rear wheel seat assembly 10, front foot assembly 11, front wheel assembly 12, plate assembly 13, canopy assembly 14, reversing wrench fixing screw 15, reversing wrench seat 16, reversing wrench 17, spring 18, nut 19, lower push rod 20, reversing seat 21, reversing seat screw 22, rear foot joint 23, joint cover 24, rear seat frame tube 25, seat connecting piece 26, rear foot connecting piece 27, rear foot tube 28, front foot connecting piece 29, car collection hook 30, rear foot fixed Fixed tube 31, front foot joint 32, car hook fixing seat 33, front foot tube 34, front wheel seat 35, front foot fixing tube 36, seat connector 37, front seat frame tube 38, detachable storage rack fixing seat 39, storage tube upper cover 40, screw 41, storage tube 42, storage tube lower cover 43, detachable storage rack seat 44, joint gear 45, joint spring 46, rivet 47, rear canopy 48, middle canopy 49, front canopy 50, dinner plate quick release part 51, unlocking spring 52, dinner plate 53, locking spring 54, locking block 55, dinner plate fixing seat 56, canopy plug 57, canopy socket 58, canopy fixing seat 59, canopy rod 60, lock hole. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings: The present invention is further illustrated below through specific embodiments, but the present invention is not limited thereto. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0024] Embodiment 1, as Figure 1-3As shown, the novel child stroller frame comprises an upper push rod assembly 1, a lower push rod assembly 2 connected to the upper push rod assembly 1, and a seat basket assembly 4 with a surrounding frame, and also comprises a folding joint assembly 6 connected to a rear foot assembly 7 and a front foot assembly 10, wherein the folding joint assembly 6 is connected to a seat connector 36 of the seat basket assembly 4 via a rivet 46, a rear wheel assembly 8 is mounted on the bottom end of the rear foot assembly 7 via a rear wheel seat assembly 9, a front wheel assembly 11 is mounted on the bottom end of the front foot assembly 10, and the front foot assembly 10 comprises a front foot fixing tube 35, both ends of the front foot fixing tube 35 are A group of front wheel seats 34 are respectively installed, and the bottoms of the two groups of front wheel seats 34 are installed with front wheel assemblies 11, and are connected to the corresponding vehicle retracting joint assemblies 6 through front leg tubes 33. The lower push rod assembly 2 includes two groups of parallel lower push rods 19, and the tops of the two groups of front wheel seats 34 are respectively connected with a group of lower push rods 19 through reversing seats 20, and the two ends of the two groups of lower push rods 19 are respectively plug-connected with the two ends of the upper push rod assembly 1, and the two groups of vehicle retracting joint assemblies 6 are provided with front foot joints 31 connected to the front leg tubes 33 and a reversing locking mechanism detachably connected to the lower push rods 19.

[0025] Reference Figure 6 and Figure 7 The lower end of the upper push rod assembly 1 is installed in the upper push rod assembly 2 and can slide up and down along the inner side; the lower push rod assembly 2 is connected to the front foot assembly 10 through the reversing seat 20, and can be turned forward or backward to change direction; the front foot assembly 10 is connected to the rear foot assembly 7 through the car folding joint assembly 6; the seat assembly 4 is connected to the car folding joint assembly 6 through the rivet 46, and the seat assembly 4 is folded together with the car body through the linkage assembly 5; the storage rack assembly 3 is detachable and fixed to the front and / or rear of the seat assembly 4 by a buckle; the dining tray assembly 12 is separated and fixed from the seat assembly 4 by a locking mechanism; the canopy assembly 13 is separated or fixed from the canopy fixing seat 57 by the canopy plug 56; the upper push rod assembly 1 and the lower push rod assembly 2 are in a straight line; the front wheel assembly 11 is connected to the front foot assembly 10 through an insertion rod and can be removed and installed; the rear wheel assembly 8 is connected to the rear foot assembly 7 through an insertion rod and can be removed and installed.

[0026] Embodiment 2, as Figure 1-4As shown, the novel child stroller frame comprises an upper push rod assembly 1, a lower push rod assembly 2 connected to the upper push rod assembly 1, and a seat basket assembly 4 with a surrounding frame, and also comprises a folding joint assembly 6 connected to a rear foot assembly 7 and a front foot assembly 10, wherein the folding joint assembly 6 is connected to a seat connector 36 of the seat basket assembly 4 via a rivet 46, a rear wheel assembly 8 is mounted on the bottom end of the rear foot assembly 7 via a rear wheel seat assembly 9, a front wheel assembly 11 is mounted on the bottom end of the front foot assembly 10, and the front foot assembly 10 comprises a front foot fixing tube 35, both ends of the front foot fixing tube 35 are A group of front wheel seats 34 are respectively installed, and the bottoms of the two groups of front wheel seats 34 are installed with front wheel assemblies 11, and are connected to the corresponding vehicle retracting joint assemblies 6 through front leg tubes 33. The lower push rod assembly 2 includes two groups of parallel lower push rods 19, and the tops of the two groups of front wheel seats 34 are respectively connected with a group of lower push rods 19 through reversing seats 20, and the two ends of the two groups of lower push rods 19 are respectively plug-connected with the two ends of the upper push rod assembly 1, and the two groups of vehicle retracting joint assemblies 6 are provided with front foot joints 31 connected to the front leg tubes 33 and a reversing locking mechanism detachably connected to the lower push rods 19.

[0027] Further, refer to Figure 5 and Fig.10 The reversing locking mechanism includes a reversing wrench seat 15 fixed on the lower push rod 19, a reversing wrench 16 is hinged on the reversing wrench seat 15 through a reversing wrench fixing screw 14, and a nut 18 is connected to the end of the reversing wrench fixing screw 14 to limit the reversing wrench 16 to rotate only around the center line of the reversing wrench fixing screw 14, the front end of the reversing wrench 16 has a buckle, and the outer wall of the forefoot joint 31 has a slot that matches the buckle, and there is a locking mechanism between the tail end of the reversing wrench 16 and the reversing wrench seat 15. There is a spring 17, one end of which is against the positioning hole at the rear end of the reversing wrench 16, and the other end is against the compression spring support on the reversing wrench seat 15; the reversing wrench 16 and the front foot joint 31 are locked by a buckle and a slot to achieve positive locking of the lower push rod 19. When the two sets of reversing wrenches 16 are pulled outward at the same time, the buckle on the reversing wrench 16 is disengaged from the slot on the front foot joint 31 to unlock the lower push rod 19. The lower push rod 19 can be rotated through the reversing seat 20 to achieve reversal of the lower push rod 19.

[0028] Furthermore, the reversing seat 20 is rotatably connected to the front wheel seat 34 via the reversing seat screw 21 ; and a hook fixing seat 32 is installed on the front leg tube 33 .

[0029] Furthermore, the seat basket assembly 4 includes a surrounding frame, which includes a rear seat frame tube 24 and a front seat frame tube 37 connected together by two sets of seat connectors 36, the seat connector 36 is connected to the vehicle retracting joint assembly 6 by rivets 46, and a linkage assembly 5 is installed between the rear seat frame tube 24 and the front foot joint 31.

[0030] Furthermore, the linkage assembly 5 is provided with two groups, each including a seat connecting plate 25 hinged to the corresponding rear seat frame tube 24, the other end of the seat connecting plate 25 is hinged to a rear foot connecting plate 26, the other end of the rear foot connecting plate 26 is hinged to a front foot connecting plate 28, and the other end of the front foot connecting plate 28 is hinged to the front foot joint 31.

[0031] Furthermore, the vehicle folding joint assembly 6 includes a front foot joint 31 connected to the front foot tube 33 and a rear foot joint 22 connected to the rear foot tube 27. The rear foot tube 27 and the front foot tube 33 are interconnected through the rear foot joint 22 and the front foot joint 31 to form a rotatable folding structure. A joint gear 44 and a joint spring 45 are provided between the rear foot joint 22 and the front foot joint 31. One end of the joint spring 45 presses against the joint gear 44 and the other end presses against the inner wall of the front foot joint 31. The joint spring 45 presses the joint gear 44 so that the joint gear 44 and the rear foot joint 22 and the front foot joint 31 are all engaged with each other to form a fixed structure. The joint gear 44 is connected to the joint cover 23. By pressing the joint cover 23, the joint cover 23 presses the joint gear 44 inward, so that the joint gear 44 and the rear foot joint 22 are disengaged from the lock to form a rotatable vehicle folding structure.

[0032] Furthermore, a rear leg fixing tube 30 is connected between the two groups of rear leg tubes 27 , and a vehicle retracting hook 29 is installed on the rear leg tubes 27 .

[0033] Furthermore, a storage rack assembly 3 is detachably mounted at one end of the surrounding frame, and the storage rack assembly 3 includes a storage tube 41, a storage tube upper cover 39, a storage tube lower cover 42, and a detachable storage rack seat 43. The storage tube upper cover 39 and the storage tube lower cover 42 form a circular ring shape and are sleeved on the storage tube 41. The detachable storage rack seat 43 is connected to the storage tube upper cover 39 by a screw 40, and a detachable storage rack fixing seat 38 that is clamped with the detachable storage rack seat 43 is respectively provided at both ends of the surrounding frame.

[0034] Further, refer to Figure 8 and Fig. 9A dining tray assembly 12 is detachably mounted between the two groups of seat connectors 36, and a dining tray fixing seat 55 for mounting the dining tray assembly 12 is mounted on the seat connector 36. The dining tray assembly 12 includes a dining tray quick release member 50, an unlocking spring 51, a dining tray 52, a locking spring 53 and a locking block 54. The dining tray fixing seat 55 has a locking hole that cooperates with the locking block 54. The dining tray quick release member 50 is mounted in a vertical groove at the end of the dining tray 52 and can slide in the vertical groove. The upper end of the unlocking spring 51 abuts against the dining tray quick release member 50, and the other end abuts against the inner side plane of the end of the dining tray 52. ​​The locking block 54 is mounted in a transverse groove at the end of the dining tray 52 and can slide in the transverse groove. One end of the locking spring 53 abuts against the positioning hole on the locking block 54 The other end is against the inner plane of the end of the dining plate 52, and the bottom of the dining plate quick release part 50 and the locking block 54 are driven by the inclined surface; by pressing down the dining plate quick release part 50, the dining plate quick release part 50 slides downward along the vertical groove, and under the driving of the matching inclined surface, the locking block 54 can move along the horizontal groove toward the inner hole of the end of the dining plate 52, so that the locking block 54 is separated from the card slot on the dining plate fixing seat 55, so that the dining plate assembly 12 and the seat basket assembly 4 are unlocked. When the hand is released, the dining plate quick release part 50 is reset under the drive of the unlocking spring 51, and the locking block 54 is reset under the drive of the locking spring 53. When both sides of the dining plate 52 are simultaneously inserted into the slots of the dining plate fixing seat 55, the locking block 54 enters the corresponding locking hole 60 on the dining plate fixing seat 55, so that the dining plate assembly 12 is locked.

[0035] Furthermore, a group of canopy components 13 are respectively arranged on the rear seat frame tube 24 and the front seat frame tube 37. The canopy component 13 installed on the front seat frame tube 37 includes a canopy rod 59, and a canopy fixing seat 58 with a canopy plug 56 is respectively arranged at both ends of the canopy rod 59. The front seat frame tube 37 is provided with a canopy socket 57 that is plugged and matched with the corresponding canopy plug 56. The upper cover of the canopy component 13 is provided with a connecting cloth cover, which is respectively a rear canopy 47 and a front canopy 49 according to the installation position. The rear canopy 47 and the front canopy 49 are connected by the middle canopy 48 through a zipper; by unzipping the zipper connecting the middle canopy 48 with the rear canopy 47 or the front canopy 49, the rear canopy 47 and the front canopy 49 can be respectively unfolded or folded.

[0036] How to collect the car. Figure 3 , Figure 6The joint gear 44 is located between the front foot joint 31 and the rear foot joint 22, one end of the joint spring 45 presses against the joint gear 44, and the other end presses against the inner wall of the front foot joint 31; the seat connecting piece 36 is connected to the car folding joint assembly 6 by a rivet 46; the front foot connecting piece 28 is riveted to the front foot joint 31, the rear foot connecting piece 26 is riveted to the rear foot tube 27, the seat connecting piece 25 is riveted to the rear seat frame tube 24, the seat connecting piece 25 is riveted to the rear foot connecting piece 26, and the rear foot connecting piece 26 is riveted to the front foot connecting piece 28. The rear foot joint 22 is used as a frame, and the front foot joint 31, the front foot connecting piece 28, the rear foot connecting piece 26, the seat connecting piece 25, the rear seat frame tube 24, etc. form a connecting rod mechanism, wherein the rear foot joint 22, the front foot joint 31, the front foot connecting piece 28, and the rear foot connecting piece 26 form a four-link mechanism, and the rear foot joint 22, the rear foot connecting piece 26, the seat connecting piece 25, and the rear seat frame tube form a four-link mechanism. Press the joint cover 23 by hand at the same time, the joint cover 23 presses the joint gear 44 inward, so that the joint gear 44 is unlocked from the rear foot joint 22, and the front foot assembly 10 is pulled backward, and the front foot tube 33 drives the rear foot connecting piece 26 to move, and the rear foot connecting piece 26 then drives the seat connecting piece 25, and the seat connecting piece drives the rear seat frame tube 24 to flip upward, achieving Figure 6 Folding state of the frame. After the frame is folded, the retracting hook 29 is engaged with the retracting hook fixing seat 32, the frame cannot be unfolded, and the front foot assembly 11 is turned forward 180 degrees. The platform can be dragged by pulling the upper push rod, thereby saving physical strength in moving the platform.

[0037] See Figure 2 , 3. The lower push rod 19 is fixed to the reversing seat 20 by rivets, the reversing seat 20 is connected to the front wheel seat 34 by the reversing seat screw 21, and the reversing seat 20 can be flipped forward and backward around the screw 21; the reversing wrench seat 15, the reversing wrench 16, the spring 17, the reversing wrench fixing screw 14, the nut 18 and the front foot joint 31 constitute a reversing locking mechanism. The reversing wrench seat 15 is fixed on the lower push rod 19, and the reversing wrench 16 is positioned by the reversing wrench fixing screw 14 and the nut 18, and can only rotate around the wrench fixing screw 14; one end of the spring 17 is against the hole of the reversing wrench 16, and the other end is against the reversing wrench seat 15; the reversing wrench 16 and the forefoot joint 31 are locked by the buckle and the slot. When both hands simultaneously pull the reversing wrench 16 outward to disengage the buckle of the reversing wrench 16 from the slot of the forefoot joint 31, reversing can be achieved; conversely, release your hands, the buckle of the reversing wrench 16 will engage with the slot of the forefoot joint, and positive locking can be achieved.

[0038] See Figure 3 , Figure 4The storage tube upper cover 39, the storage tube lower cover 42 and the storage tube 41 are fixed together by rivets, the storage tube upper cover 39 and the detachable storage rack seat 43 are connected by screws 40, and the detachable storage rack tube 43 can rotate around the screw 40 to realize the flipping of the storage tube 41, and a detachable storage rack fixing seat 38 is fixed on each of the front seat frame tube 37 and the rear seat frame tube 24, and the buckle of the detachable storage rack seat 43 cooperates with the slot of the detachable storage fixing seat 38, so as to realize the buckling and separation of the detachable storage rack assembly 3 and the seat assembly 3 at the front and rear positions.

[0039] The new child stroller frame described in the present invention has a group of lower push rods connected to the tops of the two groups of front wheel seats through a reversing seat, and the two ends of the two groups of lower push rods are respectively plug-connected with the two ends of the upper push rod assembly. The upper push rod assembly cooperates with the lower push rod assembly to flip forward or backward to switch directions, thereby realizing switching between a pushing position or a towing position, making towing or pushing more stable.

[0040] The novel stroller frame of the present invention can press down the meal tray quick-release piece, so that the meal tray quick-release piece slides downward along the vertical groove. Driven by the matching inclined surface, the locking block can move along the horizontal groove toward the inner hole at the end of the meal tray, so that the locking block is separated from the slot on the meal tray fixing seat, so that the meal tray assembly and the seat basket assembly are unlocked. When the hand is released, the meal tray quick-release piece is reset under the drive of the unlocking spring, and the locking block is reset under the drive of the locking spring. When both sides of the meal tray are simultaneously inserted into the slots of the meal tray fixing seat, the locking block enters the corresponding locking holes on the meal tray fixing seat, so that the meal tray assembly is locked, and the operation is more convenient.

[0041] The novel child stroller frame of the present invention, after the frame is folded, the retracting hook is buckled with the retracting hook fixing seat, the frame cannot be unfolded, the front leg assembly flips forward 180 degrees, and the platform can be dragged by pulling the upper push rod, thereby saving physical strength in moving the platform.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

[0043] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. A novel child stroller frame, comprising an upper push rod assembly (1), a lower push rod assembly (2) connected to the upper push rod assembly (1), and a seat basket assembly (4) having a surrounding frame, characterized in that: The vehicle further comprises a vehicle folding joint assembly (6) connected to the rear foot assembly (7) and the front foot assembly (10); the vehicle folding joint assembly (6) is connected to the seat connecting member (36) of the seat basket assembly (4) via a rivet (46); a rear wheel assembly (8) is mounted on the bottom end of the rear foot assembly (7) via a rear wheel seat assembly (9); a front wheel assembly (11) is mounted on the bottom end of the front foot assembly (10); the front foot assembly (10) comprises a front foot fixing tube (35); a group of front wheel seats (34) are mounted at both ends of the front foot fixing tube (35); the bottom ends of the two groups of front wheel seats (34) are connected to the front wheel seats (34) of the vehicle. The two front wheel seats (34) are both provided with front wheel assemblies (11) and are connected to the corresponding vehicle retracting joint assemblies (6) via front leg tubes (33); the lower push rod assembly (2) comprises two sets of parallel lower push rods (19); the tops of the two sets of front wheel seats (34) are respectively connected to a set of lower push rods (19) via reversing seats (20); the two ends of the two sets of lower push rods (19) are respectively plug-connected to the two ends of the upper push rod assembly (1); the two sets of vehicle retracting joint assemblies (6) are provided with front leg joints (31) connected to the front leg tubes (33) and reversing locking mechanisms detachably connected to the lower push rods (19).

2. According to the novel stroller frame of claim 1, the reversing locking mechanism comprises a reversing wrench seat (15) fixed on the lower push rod (19), a reversing wrench (16) is hingedly connected to the reversing wrench seat (15) through a reversing wrench fixing screw (14), and a nut (18) is connected to the end of the reversing wrench fixing screw (14), so that the reversing wrench (16) can only rotate around the center line of the reversing wrench fixing screw (14), the front end of the reversing wrench (16) has a buckle, the outer wall of the forefoot joint (31) has a slot that matches the buckle, and the tail end of the reversing wrench (16) is connected to the reversing wrench. A spring (17) is provided between the hand seat (15), one end of the spring (17) being pressed against a positioning hole at the rear end of the reversing wrench (16), and the other end being pressed against a compression spring support on the reversing wrench seat (15); the reversing wrench (16) and the front foot joint (31) are locked by means of a buckle and a slot, thereby achieving positive locking of the lower push rod (19); when the two sets of reversing wrenches (16) are simultaneously pulled outward, the buckles on the reversing wrenches (16) are disengaged from the slots on the front foot joint (31), thereby achieving unlocking of the lower push rod (19); the lower push rod (19) is rotated through the reversing seat (20), thereby achieving reversal of the lower push rod (19).

3. The novel child stroller frame according to claim 2 is characterized in that: The reversing seat (20) is rotatably connected to the front wheel seat (34) via a reversing seat screw rod (21); and a hook fixing seat (32) is installed on the front leg tube (33).

4. The novel child stroller frame according to claim 3 is characterized in that: The seat basket assembly (4) comprises a surrounding frame, the surrounding frame comprising a rear seat frame tube (24) and a front seat frame tube (37) connected together by two sets of seat connecting members (36), the seat connecting member (36) is connected to the vehicle retracting joint assembly (6) by rivets (46), and a linkage assembly (5) is installed between the rear seat frame tube (24) and the front foot joint (31).

5. The novel child stroller frame according to claim 4 is characterized in that: The linkage assembly (5) is provided with two groups in total, each comprising a seat connecting piece (25) hinged to a corresponding rear seat frame tube (24), the other end of the seat connecting piece (25) being hinged to a rear foot connecting piece (26), the other end of the rear foot connecting piece (26) being hinged to a front foot connecting piece (28), and the other end of the front foot connecting piece (28) being hinged to a front foot joint (31).

6. The novel child stroller frame according to claim 5, characterized in that: The vehicle folding joint assembly (6) comprises a front foot joint (31) connected to a front foot tube (33) and a rear foot joint (22) connected to a rear foot tube (27); the rear foot tube (27) and the front foot tube (33) are connected to each other via the rear foot joint (22) and the front foot joint (31) to form a rotatable foldable structure; a joint gear (44) and a joint spring (45) are provided between the rear foot joint (22) and the front foot joint (31); one end of the joint spring (45) is against the joint gear. The wheel (44) has its other end pressed against the inner wall of the front foot joint (31); the joint spring (45) presses the joint gear (44) so ​​that the joint gear (44) and the rear foot joint (22) and the front foot joint (31) are mutually engaged to form a fixed structure; the joint gear (44) is connected to a joint cover (23); by pressing the joint cover (23), the joint cover (23) presses the joint gear (44) inwardly, so that the joint gear (44) and the rear foot joint (22) are disengaged from the lock to form a rotatable wheel storage structure.

7. The novel child stroller frame according to claim 6, characterized in that: A rear foot fixing tube (30) is connected between the two groups of rear foot tubes (27), and a vehicle collecting hook (29) is installed on the rear foot tube (27).

8. The novel child stroller frame according to claim 7, characterized in that: A storage rack assembly (3) is detachably mounted on one end of the surrounding frame. The storage rack assembly (3) comprises a storage tube (41), a storage tube upper cover (39), a storage tube lower cover (42), and a detachable storage rack seat (43). The storage tube upper cover (39) and the storage tube lower cover (42) are arranged in a circular ring shape and are sleeved on the storage tube (41). The detachable storage rack seat (43) is connected to the storage tube upper cover (39) via a screw (40). A detachable storage rack fixing seat (38) that is clamped to the detachable storage rack seat (43) is respectively provided at both ends of the surrounding frame.

9. The novel child stroller frame according to claim 8, characterized in that: A dining tray assembly (12) is detachably mounted between the two groups of seat connectors (36); a dining tray fixing seat (55) for mounting the dining tray assembly (12) is mounted on the seat connector (36); the dining tray assembly (12) comprises a dining tray quick release member (50), an unlocking spring (51), a dining tray (52), a locking spring (53) and a locking block (54); the dining tray fixing seat (55) has a locking hole that cooperates with the locking block (54); the dining tray quick release member (50) is mounted in a vertical groove at the end of the dining tray (52) and can slide in the vertical groove; the upper end of the unlocking spring (51) abuts against the dining tray quick release member (50) and the other end abuts against the inner side plane of the end of the dining tray 52; the locking block (54) is mounted in a horizontal groove at the end of the dining tray (52) and can slide in the horizontal groove; one end of the locking spring (53) abuts against the positioning hole on the locking block (54) The other end of the plate is against the inner plane of the end of the plate (52), and the bottom of the plate quick release member (50) and the locking block (54) are driven by the inclined surface. By pressing down the plate quick release member (50), the plate quick release member (50) slides downward along the vertical groove. Under the driving of the matching inclined surface, the locking block (54) can move along the horizontal groove toward the inner hole of the end of the plate (52), so that the locking block (54) is separated from the slot on the plate fixing seat 55, so that the plate assembly (12) and the seat basket assembly (4) are unlocked. When the hand is released, the plate quick release member (50) is reset under the driving of the unlocking spring (51), and the locking block (54) is reset under the driving of the locking spring (53). When both sides of the plate (52) are simultaneously locked in the slots of the plate fixing seat (55), the locking block (54) enters the corresponding locking hole (60) on the plate fixing seat (55), so that the plate assembly (12) is locked.

10. The novel child stroller frame according to claim 9, characterized in that: A group of canopy components (13) are respectively arranged on the rear seat frame tube (24) and the front seat frame tube (37). The canopy component (13) installed on the front seat frame tube (37) includes a canopy rod (59). Both ends of the canopy rod (59) are respectively provided with a canopy fixing seat (58) having a canopy plug (56). The front seat frame tube (37) is provided with a canopy socket (57) plugged with the corresponding canopy plug (56). The canopy component (13) is provided with a connecting cloth cover on the upper cover. The canopy component (13) is respectively provided with a rear canopy (47) and a front canopy (49) according to the installation position. The rear canopy (47) and the front canopy (49) are connected by a middle canopy (48) by a zipper. When the zipper connecting the middle canopy (48) and the rear canopy (47) or the front canopy (49) is opened, the rear canopy (47) and the front canopy (49) can be respectively unfolded or folded.

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