A parking structure with load-bearing integrated rear wheels and a child stroller

Abstract

A kind of parking structure with load-bearing integral rear wheel and child stroller, including rear wheel, rotating shaft, limiting structure, the center of rear wheel is equipped with rotating shaft mounting hole, two rear wheels are oppositely arranged on the two sides of rotating shaft, and limiting structure is used to limit rotating shaft;Wherein, define the side of rear wheel close to the center of length direction of rotating shaft as A face, and the side opposite to A face is B face;Rotating shaft mounting hole penetrates A face and B face, rotating shaft is connected in rotating shaft mounting hole and extends out B face, and limiting structure is connected in B face to limit rotating shaft.This utility model reaches the effect of enhancing the support stability of parking structure, the carrying capacity of rear wheel and the stability of rotating shaft in running process, improving the convenience of later maintenance and prolonging the service life of rotating shaft by adopting the structure design of rotating shaft penetration.

Description

Technical Field

[0001] This utility model relates to the field of children's stroller technology, specifically to a parking structure with a load-bearing integrated rear wheel, and a children's stroller using this parking structure. Background Technology

[0002] The current market offers a variety of stroller styles, which can be broadly categorized by opening mechanism into top-hook, front-folding, and side-opening types. To balance load-bearing strength and lightweight design, foldable strollers generally utilize aluminum alloy tubular frames, with the chassis and uprights forming the basic load-bearing channels.

[0003] The existing parking structures on the chassis are mostly non-through connections between the wheels and the rotating shaft. When the parking structure bears a large load, it is prone to outward swinging, which leads to severe wear and instability of the rear wheels, and thus reduces the service life of the stroller. Therefore, this utility model proposes a new solution to the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this utility model is to provide a parking structure and stroller with a load-bearing integrated rear wheel. The structure adopts a through-type rotating shaft design, which enhances the support stability of the parking structure, the load-bearing capacity of the rear wheel and the stability of the rotating shaft during operation, improves the convenience of later maintenance and extends the service life of the rotating shaft.

[0005] The technical solution is as follows: A parking structure with a load-bearing integrated rear wheel includes: The rear wheel has a rotating shaft mounting hole at its center; A rotating shaft, with the two rear wheels arranged opposite each other on both sides of the rotating shaft; A limiting structure, wherein the limiting structure is used to limit the rotating shaft; Here, the side of the rear wheel closest to the center of the rotation shaft along its length is defined as surface A, and the side opposite to surface A is defined as surface B; the rotation shaft mounting hole passes through surface A and surface B, the rotation shaft is connected to the rotation shaft mounting hole and extends beyond surface B, and the limiting structure is connected to surface B to limit the rotation shaft.

[0006] As described above, a parking structure with a load-bearing integrated rear wheel includes a limiting structure comprising a first rotating shaft limiting member, a second rotating shaft limiting member for limiting the first rotating shaft limiting member, and a third rotating shaft limiting member for assisting the second rotating shaft limiting member in limiting its position. The first rotating shaft limiting member is connected to the side of the second rotating shaft limiting member near the B-side and is rotatably connected to the exposed portion of the rotating shaft. The second rotating shaft limiting member is connected to the B-side, and the third rotating shaft limiting member is connected to the other side of the second rotating shaft limiting member relative to the first rotating shaft limiting member.

[0007] As described above, a parking structure with a load-bearing integrated rear wheel is provided with a first rotation limiting through hole and a second rotation limiting through hole. The diameter of the first rotation limiting through hole is larger than that of the second rotation limiting through hole, and the first rotation limiting through hole and the second rotation limiting through hole are connected. The rotating shaft is provided with a first limiting groove near its end, which is recessed towards the central axis of the rotating shaft. The end of the rotating shaft is engaged with the first rotating limiting through hole, and is also engaged with the second rotating limiting through hole through the first limiting groove for limiting.

[0008] As described above, in a parking structure with a load-bearing integrated rear wheel, the second rotating shaft limiting member has a first mounting position for limiting the first rotating shaft limiting member on one side near the B-side, and a first fastening mounting position on the other side opposite the first mounting position. The first rotating shaft limiting member is connected within the first mounting position. The B-side has a limiting member mating position for connecting a first fastener. The first fastener fastens the second rotating shaft limiting member by connecting the first fastening mounting position and the limiting member mating position.

[0009] As described above, in a parking structure with a load-bearing integrated rear wheel, facing the installation direction of side B, the third rotating shaft limiting member is provided with a limiting fastening part for limiting the third rotating shaft limiting member, and the second rotating shaft limiting member is provided with a limiting mounting groove that passes through both sides, the limiting mounting groove being used for the limiting fastening part to engage for limiting.

[0010] As described above, in a parking structure with a load-bearing integrated rear wheel, the third rotating shaft limiting member is further provided with a first limiting protrusion for limiting the first rotating shaft limiting member and a second limiting protrusion for limiting the third rotating shaft limiting member. The first limiting protrusion and the second limiting protrusion are disposed opposite to each other on the surface facing the B surface. The first rotating shaft limiting member has a first limiting slot in the direction away from the rotating shaft; the first limiting protrusion passes through the second rotating shaft limiting member and is engaged in the first limiting slot for limiting, and the second limiting protrusion abuts against the second rotating shaft limiting member for limiting.

[0011] As described above, a parking structure with a load-bearing integrated rear wheel further includes a parking structure for limiting the rolling of the rear wheel. The two parking structures are disposed opposite each other on both sides of the rotating shaft, and each parking structure includes a parking support, a first parking gear, a second parking gear, and a brake. The first parking gear is fixedly connected to the rotating shaft; the second parking gear is rotatably connected to the parking support and meshes with the first parking gear to rotate. On the side facing A, the parking support is provided with a brake component connection hole, the second parking gear is provided with a brake adjustment part, the A side is provided with a brake hole, one end of the brake component is connected to the brake component connection hole, the other end abuts against the brake adjustment part, and is engaged into the brake hole as the second parking gear rotates to perform braking.

[0012] As described above, a parking structure with a load-bearing integrated rear wheel includes a first rotating shaft, a second rotating shaft, and a third rotating shaft. The first limiting slot is provided on the first rotating shaft. The second rotating shaft and the third rotating shaft are both hollow structures. The two first rotating shafts are connected relative to each other in the second rotating shaft. The second rotating shaft is rotatably connected in the third rotating shaft, and the first parking gear is fixedly connected to the third rotating shaft.

[0013] As described above, a parking structure with a load-bearing integrated rear wheel is provided. The parking structure further includes a parking foot pad, which is connected to the third pivot. The parking foot pad includes a first parking part and a second parking part. The third rotating shaft is provided with a parking groove through the hollow part, and the first parking part is sleeved on the third rotating shaft; the second parking part is connected to the first parking part and is inserted into the parking groove to cooperate with the first parking part for braking.

[0014] The present invention provides a children's stroller, comprising a parking structure with a load-bearing integrated rear wheel, a chassis, and a front wheel structure as described above, wherein the parking structure and the front wheel structure are disposed opposite to each other at both ends of the chassis.

[0015] This utility model employs a through-type rotating shaft structure design. Firstly, the rotating shaft mounting hole extends through both sides of the rear wheel, and the rotating shaft extends beyond surface B through the mounting hole, concentrating the force point of the entire rear wheel at its center. This prevents the rear wheel from shifting or turning outwards during use, thus improving the support stability of the parking structure. Secondly, a limiting structure is set on surface B on the outer side of the rear wheel, directly limiting the exposed portion of the rotating shaft extending beyond this surface. This limiting structure prevents the rotating shaft from slipping during use, thereby enhancing the rear wheel's stability. The load-bearing capacity and stability of the rotating shaft during operation are enhanced; thirdly, the external limiting structure simplifies assembly and maintenance, allowing operation without removing the rear wheels, and also serves as a dust barrier, which improves the convenience of later maintenance and extends the service life of the rotating shaft; at the same time, the external limiting structure design releases the inner space of the rear wheels, facilitating the arrangement of the frame and additional devices, and has strong compatibility, thereby enhancing the support stability of the parking structure, the load-bearing capacity of the rear wheels and the stability of the rotating shaft during operation, improving the convenience of later maintenance, and extending the service life of the rotating shaft. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a portion of the parking structure connected to the chassis according to an embodiment of this utility model; Figure 2 It corresponds Figure 1 A structural diagram from another direction; Figure 3 This is an exploded view of the parking structure connected to the chassis in an embodiment of this utility model. Figure 4 It corresponds Figure 3 Enlarged view of the A-section structure; Figure 5 It corresponds Figure 3 Enlarged view of the structure of section B; Figure 6 It corresponds Figure 3 Enlarged view of the C-section structure; Figure 7 It corresponds Figure 3 A structural diagram from another direction; Figure 8 It corresponds Figure 7 Enlarged view of the structure of part D; Figure 9 It corresponds Figure 7 Enlarged view of the E-section structure; Figure 10 It corresponds Figure 7 A structural diagram from another direction; Figure 11 It corresponds Figure 10 Enlarged view of the F-section structure; Figure 12 It corresponds Figure 10 Enlarged view of the G-section structure; Figure 13 This is a schematic diagram of the structure of the second rotating shaft limiting member according to an embodiment of this utility model; Figure 14 This is an exploded view of another part of the parking structure connected to the chassis in this embodiment of the utility model; Figure 15 It corresponds Figure 14 Enlarged view of the H-section structure; Figure 16 This is a schematic diagram of the parking structure and front wheel structure mounted on the chassis according to an embodiment of the present invention.

[0018] Figure label: 1. Parking structure; 11. Rear wheel; 111. Rotary shaft mounting hole; 112. Limiting component mating position; 113. Brake hole; 12. Rotary shaft; 121. First rotating shaft; 1211. First limiting slot; 1212. Second rotating shaft fixing hole; 122. Second rotating shaft; 1221. Reinforcing rib; 1222. First rotating shaft fixing hole; 123. Third rotating shaft; 1231. Parking groove; 1232. Gear engagement part; 13. Limiting structure; 131. First rotating shaft limiting component; 1311. First rotating limiting through hole; 1312. Second rotating limiting through hole; 1313. First limiting slot; 1314. Disassembly slot; 132. Second rotating shaft limiting component; 1321. First mounting position ; 1322, First fastening mounting position; 1323, Limiting mounting groove; 1324, Third through hole; 1325, First limiting groove; 133, Third rotating shaft limiting component; 1331, Limiting fastening part; 1332, First limiting protrusion; 1333, Second limiting protrusion; 14, Parking structure; 141, Parking support seat; 1411, Brake component connecting hole; 142, First parking gear; 1421, Rotating shaft slot; 143, Second parking gear; 1431, Brake adjustment part; 144, Brake component; 1441, Brake pin; 1442, Pin mounting component; 1443, Brake spring; 145, Parking foot pad; 1451, First parking part; 1452, Second parking part; 2. Chassis; 3. Front wheel structure. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings.

[0020] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive element, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. In existing technologies, since the connection between the wheels and the rotating shaft is mostly non-through, when the parking structure bears a large load, it is easy to cause the wheels to sag outwards, resulting in severe wear and instability of the rear wheels, which in turn reduces the service life of the stroller.

[0022] To address these issues, researchers discovered that designing the connection between the rear wheel and the rotating axle as a through-type design not only enhances the support stability of the parking structure but also improves the convenience of rear wheel installation and maintenance, and extends the service life of the rear wheels.

[0023] Therefore, refer to Figures 1-16 The present invention provides a parking structure with a load-bearing integrated rear wheel, comprising: The rear wheel 11, the rotating shaft 12, and the limiting structure 13 are provided. The center of the rear wheel 11 is provided with a rotating shaft mounting hole 111. The two rear wheels 11 are arranged opposite to each other on both sides of the rotating shaft 12. The limiting structure 13 is used to limit the rotating shaft 12. The side of the rear wheel 11 closest to the center of the rotating shaft 12 in the length direction is defined as surface A, and the side opposite to surface A is defined as surface B. The rotating shaft mounting hole 111 passes through surface A and surface B. The rotating shaft 12 is connected to the rotating shaft mounting hole 111 and extends out of surface B. The limiting structure 13 is connected to surface B to limit the rotating shaft 12.

[0024] In this embodiment of the present invention, surface A is the inner surface of the rear wheel 11, and surface B is the outer surface of the rear wheel 11. By providing a through-hole 111 between surface A and surface B, the rotating shaft 12 extends out of surface B through the rotating shaft mounting hole 111, concentrating the force point of the entire rear wheel 11 at the center of the rear wheel 11. This prevents the rear wheel 11 from shifting or turning outwards during use, thereby improving the support stability of the parking structure.

[0025] In this embodiment of the utility model, the limiting structure 13 is disposed on the B-side outside the rear wheel 11 and directly limits the exposed portion of the rotating shaft 12 extending beyond this surface. This prevents the rotating shaft 12 from slipping during use, thereby improving the load-bearing capacity of the rear wheel 11 and the stability of the rotating shaft 12 during operation. Thirdly, the external placement of the limiting structure 13 simplifies assembly and maintenance, allowing operation without disassembling the rear wheel 11. It also serves as a dust barrier, improving the convenience of later maintenance and extending the service life of the rotating shaft 12. Simultaneously, the external design of the limiting structure 13 frees up the inner space of the rear wheel 11, facilitating the arrangement of the frame and additional devices, enhancing compatibility. Furthermore, the rear wheel 11 can be quickly disassembled simply by removing the limiting structure 13, thus enhancing the support stability of the parking structure, the load-bearing capacity of the rear wheel and the stability of the rotating shaft 12 during operation, improving the convenience of later maintenance, and extending the service life of the rotating shaft 12.

[0026] In this embodiment of the present invention, the exposed portion of the rotating shaft 12 extending beyond surface B is the rotational connection point between the rotating shaft 12 and the limiting structure 13.

[0027] Specifically, the limiting structure 13 includes a first rotating shaft limiting member 131, a second rotating shaft limiting member 132 for limiting the first rotating shaft limiting member 131, and a third rotating shaft limiting member 133 for assisting the second rotating shaft limiting member 132 in limiting; the first rotating shaft limiting member 131 is connected to the side of the second rotating shaft limiting member 132 near the B surface and is rotatably connected to the exposed portion of the rotating shaft 12; the second rotating shaft limiting member 132 is connected to the B surface; and the third rotating shaft limiting member 133 is connected to the other side of the second rotating shaft limiting member 132 relative to the first rotating shaft limiting member 131.

[0028] In this embodiment of the present invention, the third rotating shaft limiting member 133, the second rotating shaft limiting member 132, and the first rotating shaft limiting member 131 are disposed on one side of surface B and are sequentially installed and abut against each other along the center of the length direction of the rotating shaft 12, forming a modular structure for quick disassembly, which is beneficial to improving the convenience of disassembling and installing the rear wheel 11. At the same time, the second rotating shaft limiting member 132 is connected to surface B, so that one side of the first rotating shaft limiting member 131 abuts against surface B and the other side abuts against the contact surface of the second rotating shaft limiting member 132, making the contact surface of the first rotating shaft limiting member 131 parallel to surface B, which is beneficial to ensuring the installation sag of the rear wheel 11 and the rotating shaft 12, thereby improving the support stability of the rear wheel 11. Meanwhile, the third rotating shaft limiting member 133 is disposed on the outside, which enhances the sealing performance of the limiting structure 13 on the rotating shaft 12, which is beneficial to extending the service life of the parking structure.

[0029] Furthermore, the first rotating shaft limiting member 131 is provided with a first rotating limiting through hole 1311 and a second rotating limiting through hole 1312. The diameter of the first rotating limiting through hole 1311 is larger than that of the second rotating limiting through hole 1312, and the first rotating limiting through hole 1311 and the second rotating limiting through hole 1312 are connected. The rotating shaft 12 is provided with a first limiting groove 1211 that is recessed towards the central axis of the rotating shaft 12 near its end. The end of the rotating shaft 12 is engaged in the first rotation limiting through hole 1311 and is limited by the first limiting groove 1211 engaging in the second rotation limiting through hole 1312.

[0030] In this embodiment of the present invention, the diameter of the first rotation limiting through hole 1311 is greater than or equal to the diameter of the connecting end of the rotating shaft 12, and the diameter of the second rotation limiting through hole 1312 is smaller than the diameter of the connecting end of the rotating shaft 12, so as to limit the axial movement of the rotating shaft 12 through the second rotation limiting through hole 1312; the first rotating shaft limiting member 131 is also provided with a disassembly slot 1314 on the side of the first rotation limiting through hole 1311, and the first rotating shaft limiting member 131 can be switched from the first rotation limiting through hole 1311 to the first rotating shaft limiting through hole 1311 through the disassembly slot 1314. The second rotation limiting through hole 1312 prevents the rotating shaft 12 from moving along its length, and allows the rotating shaft 12 to be fastened through the second rotation limiting through hole 1312 to improve the stability of the rear wheel 11 installation; or the first rotating shaft limiting member 131 can be switched from the second rotation limiting through hole 1312 to the first rotation limiting through hole 1311 through the disassembly slot 1314, so that the first rotating shaft limiting member 131 can be disengaged from the rotating shaft 12 through the first rotation limiting through hole 1311, thereby improving the convenience of installation and disassembly.

[0031] Preferably, the first limiting groove 1211 is an annular groove design, and the diameter of the recessed shaft in the first limiting groove 1211 is less than or equal to the width of the connection between the first rotation limiting through hole 1311 and the second rotation limiting through hole 1312, so as to ensure the smooth switching between the first rotation limiting through hole 1311 and the second rotation limiting through hole 1312.

[0032] Furthermore, the second rotating shaft limiting member 132 has a first mounting position 1321 for limiting the first rotating shaft limiting member 131 on one side near the B surface, and a first fastening mounting position 1322 on the other side opposite to the first mounting position 1321. The first rotating shaft limiting member 131 is connected in the first mounting position 1321. The B surface has a limiting member mating position 112 for connecting the first fastener. The first fastener fastens the second rotating shaft limiting member 132 by connecting the first fastening mounting position 1322 and the limiting member mating position 112.

[0033] In this embodiment of the present invention, the first mounting position 1321 is designed with a groove structure to restrict the first rotating shaft limiting member 131 within the groove; and the first mounting position 1321 is provided with a third through hole 1324 for the end of the rotating shaft 12 to extend out, so as to prevent the rotating shaft 12 from rubbing against the second rotating shaft limiting member 132, and at the same time ensure that the limiting structure 13 remains stationary during the rotation of the rotating shaft 12, thereby extending the service life of the limiting structure 13.

[0034] In this embodiment of the present invention, the first fastener is a threaded fastener. The first fastener is connected to the first fastening mounting position 1322 and the limiting member mating position 112, so that the second rotating shaft limiting member 132 is detachably connected to the rear wheel 11, and at the same time, the first rotating shaft limiting member 131 is fastened.

[0035] Furthermore, in the mounting direction facing the B side, the third rotating shaft limiting member 133 is provided with a limiting fastening part 1331 for limiting the third rotating shaft limiting member 133, and the second rotating shaft limiting member 132 is provided with a limiting mounting groove 1323 that passes through both sides, and the limiting mounting groove 1323 is used for the limiting fastening part 1331 to be engaged for limiting.

[0036] In this embodiment of the utility model, the limiting fastening part 1331 is designed with a snap-fit ​​structure so that it can be snapped into the limiting mounting groove 1323, thereby improving the convenience of connecting the third rotating shaft limiting member 133 to the second rotating shaft limiting member 132.

[0037] Furthermore, the third rotating shaft limiting member 133 is also provided with a first limiting protrusion 1332 for limiting the first rotating shaft limiting member 131 and a second limiting protrusion 1333 for limiting the third rotating shaft limiting member 133, the first limiting protrusion 1332 and the second limiting protrusion 1333 being disposed opposite to each other on the surface facing the B surface; The first rotating shaft limiting member 131 is provided with a first limiting slot 1313 in the direction away from the rotating shaft 12; the first limiting protrusion 1332 passes through the second rotating shaft limiting member 132 and is engaged in the first limiting slot 1313 for limiting; the second limiting protrusion 1333 abuts against the second rotating shaft limiting member 132 for limiting.

[0038] In this embodiment of the present invention, the first mounting position 1321 is further provided with a first limiting groove 1325, the first limiting protrusion 1332 passes through the first limiting groove 1325 for the first limiting slot 1313 to be engaged, and the first limiting slot 1313 can slide relative to the first limiting protrusion 1332 to improve the smoothness of switching between the first rotating limiting through hole 1311 and the second rotating limiting through hole 1312.

[0039] In this embodiment of the present invention, the second limiting protrusion 1333 abuts against the second rotating shaft limiting member 132 to reduce the connection gap between the third rotating shaft limiting member 133 and the second rotating shaft limiting member 132, thereby enhancing the fastness of the buckle connection to the second rotating shaft limiting member 132.

[0040] This utility model provides a parking structure with a load-bearing integrated rear wheel, and further includes a parking structure 14 for restricting the rolling of the rear wheel 11. Two parking structures 14 are disposed opposite each other on both sides of the rotating shaft 12, and each parking structure 14 includes a parking support 141, a first parking gear 142, a second parking gear 143, and a brake 144. The first parking gear 142 is fixedly connected to the rotating shaft 12; the second parking gear 143 is rotatably connected to the parking support 141 and meshes with the first parking gear 142 to rotate. On the side facing A, the parking support 141 is provided with a brake component connection hole 1411, the second parking gear 143 is provided with a brake adjustment part 1431, the A side is provided with a brake hole 113, one end of the brake component 144 is connected to the brake component connection hole 1411, the other end abuts against the brake adjustment part 1431, and is engaged in the brake hole 113 as the second parking gear 143 rotates to perform braking.

[0041] In this embodiment of the present invention, the brake adjustment part 1431 is provided on the side of the second parking gear 143 facing the A surface, and the brake adjustment part 1431 is designed with an arc surface structure to ensure that the brake member 144 can extend out of the brake member connecting hole 1411 or retract into the brake member connecting hole 1411 along the trajectory of the arc surface, thereby stopping the rear wheel 11 from rotating by the brake member 144 engaging in the brake hole 113; or allowing the rear wheel 11 to continue rotating by the brake member 144 disengaging from the brake hole 113, thereby enhancing the convenience and stability of the parking structure braking.

[0042] The brake adjustment section 1431 has an adjustment end near the A-side and an adjustment initial end away from the A-side. The brake element 144 includes a brake pin 1441, a pin mounting member 1442, and a brake spring 1443. The pin mounting member 1442 abuts against the brake adjustment section 1431. The brake pin 1441 is slidably connected within a through hole inside the pin mounting member 1442. The brake spring 1443 is connected to one end of the brake pin 1441 near the brake adjustment section 1431, so that the brake pin 1441... During the process of the pin mounting member 1442 moving from the initial adjustment end to the final adjustment end, the brake pin 1441 extends out of the brake component connection hole 1411 by squeezing the brake spring 1443, and is engaged in the brake hole 113 for braking. At the same time, when the pin mounting member 1442 returns to the initial adjustment end, the brake pin 1441 retracts into the brake component connection hole 1411, allowing the rear wheel 11 to continue rotating, thereby improving the stability of the parking structure braking.

[0043] In this embodiment of the present invention, the first parking gear 142 is provided with a rotating shaft slot 1421 on the side away from the A surface, so as to ensure that after the rotating shaft 12 is engaged in the rotating shaft slot 1421, the first parking gear 142 and the rotating shaft 12 can rotate synchronously, thereby improving the stability of the parking structure braking.

[0044] Furthermore, the rotating shaft 12 includes a first rotating shaft 121, a second rotating shaft 122, and a third rotating shaft 123. The first limiting groove 1211 is provided on the first rotating shaft 121. The second rotating shaft 122 and the third rotating shaft 123 are both hollow structures. The two first rotating shafts 121 are connected relative to each other in the second rotating shaft 122. The second rotating shaft 122 is rotatably connected in the third rotating shaft 123, and the first parking gear 142 is fixedly connected to the third rotating shaft 123.

[0045] In this embodiment of the present invention, two first rotating shafts 121 are fixedly connected to the second rotating shaft 122 so that the first rotating shaft 121 and the second rotating shaft 122 can rotate synchronously, while improving the ease of installation of the first rotating shaft 121, the second rotating shaft 122 and the third rotating shaft 123; The third rotating shaft 123 has a gear engaging portion 1232 at its end that engages with the rotating shaft slot 1421. After the gear engaging portion 1232 engages with the rotating shaft slot 1421, the first parking gear 142 can rotate synchronously with the third rotating shaft 123. The second rotating shaft 122 is rotatably connected to the third rotating shaft 123 to ensure that the rear wheel 11 can rotate normally in the non-braking state, thereby improving the smoothness of the parking structure operation.

[0046] The second rotating shaft 122 has multiple reinforcing ribs 1221 evenly spaced along its outer circumference. By setting the reinforcing ribs 1221, the support stability of the second rotating shaft 122 is effectively enhanced. The second rotating shaft 122 is also provided with a first rotating shaft fixing hole 1222, which is located opposite to each other on both sides of the second rotating shaft 122. The first rotating shaft 121 is provided with a second rotating shaft fixing hole 1212, which is located opposite to the first limiting groove 1211 at the other end of the first rotating shaft 121. During assembly, a fixing pin is used to connect the first rotating shaft fixing hole 1222 and the second rotating shaft fixing hole 1212 to fasten the first rotating shaft 121 to the second rotating shaft 122, thereby improving the convenience of assembling and disassembling the rotating shaft 12.

[0047] In this embodiment of the invention, the first rotating shaft 121 and the second rotating shaft 122 adopt a split structure design. By replacing the first rotating shaft 121 with a smaller or larger one for the rear wheels of small or large strollers, the applicability and support stability of the rotating shaft 12 for different vehicle models are enhanced. At the same time, by adopting a split structure design, the entire shaft is produced separately, allowing the first rotating shaft 121 and the second rotating shaft 122 to be produced simultaneously, reducing production difficulty, facilitating the use of more economical processing technology, and thus reducing the production cost of the shaft.

[0048] Furthermore, the parking structure 14 also includes a parking foot pad 145, which is connected to the third pivot 123, and the parking foot pad 145 includes a first parking part 1451 and a second parking part 1452. The third rotating shaft 123 is provided with a parking groove 1231 through the hollow part, and the first parking part 1451 is sleeved on the third rotating shaft 123; the second parking part 1452 is connected to the first parking part 1451 and is inserted into the parking groove 1231 to cooperate with the first parking part 1451 for braking.

[0049] In this embodiment of the present invention, the first parking part 1451 is movably connected to the third rotating shaft 123, and the first parking part 1451 can rotate relative to the third rotating shaft 123; the second parking part 1452 is connected to the first parking part 1451 and can rotate synchronously with the first parking part 1451 relative to the third rotating shaft 123; the second parking part 1452 is provided with a braking part, which is inserted into the parking groove 1231 and can drive the third rotating shaft 123 to rotate with the rotation of the second parking part 1452, thereby braking by stepping on the first parking part 1451, thereby improving the convenience of braking of the parking structure.

[0050] This utility model provides a child stroller, including a parking structure 1 with a load-bearing integrated rear wheel, a chassis 2, and a front wheel structure 3 as described above. The parking structure 1 and the front wheel structure 3 are disposed opposite to each other at both ends of the chassis 2 to enhance the stability of the child stroller during operation. In this utility model embodiment, the parking structure 1 is connected to the chassis 2 through a parking support seat to improve the ease of installation of the parking structure 1. Furthermore, since the child stroller has the aforementioned parking structure 1, it also possesses the beneficial effects of the parking structure 1.

[0051] In this embodiment of the present invention, a bearing can be installed in the rotating shaft mounting hole 111 before being connected to the first rotating shaft 121, so as to reduce the frictional damage to the first rotating shaft 121 by the rear wheel 11 during rotation and extend the service life of the first rotating shaft 121.

[0052] The above is only used to illustrate the technical solution of this utility model and not to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A parking structure with a load-bearing integrated rear wheel, characterized in that, include: The rear wheel (11) has a rotating shaft mounting hole (111) at its center. A rotating shaft (12) is provided, and the two rear wheels (11) are arranged opposite to each other on both sides of the rotating shaft (12); A limiting structure (13) is used to limit the rotation shaft (12). Herein, the side of the rear wheel (11) near the center of the rotation shaft (12) along its length is defined as surface A, and the side opposite to surface A is defined as surface B; the rotation shaft mounting hole (111) passes through surface A and surface B, the rotation shaft (12) is connected to the rotation shaft mounting hole (111) and extends out of surface B, and the limiting structure (13) is connected to surface B to limit the rotation shaft (12).

2. The parking structure with a load-bearing integrated rear wheel according to claim 1, characterized in that, The limiting structure (13) includes a first rotating shaft limiting member (131), a second rotating shaft limiting member (132) for limiting the first rotating shaft limiting member (131), and a third rotating shaft limiting member (133) for assisting the second rotating shaft limiting member (132) in limiting; the first rotating shaft limiting member (131) is connected to the side of the second rotating shaft limiting member (132) near the B surface and is rotatably connected to the exposed part of the rotating shaft (12); the second rotating shaft limiting member (132) is connected to the B surface; and the third rotating shaft limiting member (133) is connected to the other side of the second rotating shaft limiting member (132) relative to the first rotating shaft limiting member (131).

3. A parking structure with a load-bearing integrated rear wheel according to claim 2, characterized in that, The first rotating shaft limiting member (131) is provided with a first rotating limiting through hole (1311) and a second rotating limiting through hole (1312). The diameter of the first rotating limiting through hole (1311) is larger than that of the second rotating limiting through hole (1312), and the first rotating limiting through hole (1311) and the second rotating limiting through hole (1312) are connected. The rotating shaft (12) is provided with a first limiting groove (1211) near its end, which is recessed towards the central axis of the rotating shaft (12). The end of the rotating shaft (12) is inserted into the first rotating limiting through hole (1311) and is limited by the first limiting groove (1211) being inserted into the second rotating limiting through hole (1312).

4. A parking structure with a load-bearing integrated rear wheel according to claim 2, characterized in that, The second rotating shaft limiting member (132) has a first mounting position (1321) for limiting the first rotating shaft limiting member (131) on one side near the B surface, and a first fastening mounting position (1322) on the other side opposite to the first mounting position (1321). The first rotating shaft limiting member (131) is connected in the first mounting position (1321). The B surface has a limiting member mating position (112) for connecting the first fastener. The first fastener fastens the second rotating shaft limiting member (132) by connecting the first fastening mounting position (1322) and the limiting member mating position (112).

5. A parking structure with a load-bearing integrated rear wheel according to claim 3, characterized in that, Facing the installation direction of the B side, the third rotating shaft limiting member (133) is provided with a limiting fastening part (1331) for limiting the third rotating shaft limiting member (133), and the second rotating shaft limiting member (132) is provided with a limiting mounting groove (1323) that passes through both sides. The limiting mounting groove (1323) is used for the limiting fastening part (1331) to be inserted for limiting.

6. A parking structure with a load-bearing integrated rear wheel according to claim 5, characterized in that, The third rotating shaft limiting member (133) is further provided with a first limiting protrusion (1332) for limiting the first rotating shaft limiting member (131) and a second limiting protrusion (1333) for limiting the third rotating shaft limiting member (133). The first limiting protrusion (1332) and the second limiting protrusion (1333) are disposed opposite to each other on the surface facing the B surface. The first rotating shaft limiting member (131) is provided with a first limiting slot (1313) in the direction away from the rotating shaft (12); the first limiting protrusion (1332) passes through the second rotating shaft limiting member (132) and is engaged in the first limiting slot (1313) for limiting, and the second limiting protrusion (1333) abuts against the second rotating shaft limiting member (132) for limiting.

7. A parking structure with a load-bearing integrated rear wheel according to claim 5, characterized in that, It also includes a parking structure (14) for limiting the rolling of the rear wheel (11). Two parking structures (14) are disposed opposite each other on both sides of the rotating shaft (12). Each parking structure (14) includes a parking support (141), a first parking gear (142), a second parking gear (143), and a brake (144). The first parking gear (142) is fixedly connected to the rotating shaft (12). The second parking gear (143) is rotatably connected to the parking support (141) and meshes with the first parking gear (142) to rotate. Facing the A-side, the parking support (141) is provided with a brake component connection hole (1411), the second parking gear (143) is provided with a brake adjustment part (1431), the A-side is provided with a brake hole (113), one end of the brake component (144) is connected to the brake component connection hole (1411), the other end abuts against the brake adjustment part (1431), and is engaged in the brake hole (113) as the second parking gear (143) rotates to perform braking.

8. A parking structure with a load-bearing integrated rear wheel according to claim 7, characterized in that, The rotating shaft (12) includes a first rotating shaft (121), a second rotating shaft (122), and a third rotating shaft (123). The first limiting slot (1211) is provided on the first rotating shaft (121). The second rotating shaft (122) and the third rotating shaft (123) are both hollow structures. The two first rotating shafts (121) are connected relative to each other in the second rotating shaft (122). The second rotating shaft (122) is rotatably connected in the third rotating shaft (123), and the first parking gear (142) is fixedly connected to the third rotating shaft (123).

9. A parking structure with a load-bearing integrated rear wheel according to claim 8, characterized in that, The parking structure (14) also includes a parking foot pad (145), which is connected to the third pivot (123), and the parking foot pad (145) includes a first parking part (1451) and a second parking part (1452). The third rotating shaft (123) is provided with a parking groove (1231) through the hollow part, and the first parking part (1451) is sleeved on the third rotating shaft (123); the second parking part (1452) is connected to the first parking part (1451) and is inserted into the parking groove (1231) to cooperate with the first parking part (1451) for braking.

10. A stroller comprising a parking structure (1) with a load-bearing integrated rear wheel as described in any one of claims 1-9, a chassis (2), and a front wheel structure (3), wherein the parking structure (1) and the front wheel structure (3) are disposed opposite to each other at both ends of the chassis (2).

Images