Side-opening children's vehicle chassis and side-opening children's vehicle

Abstract

A side-opening children's stroller chassis and a side-opening children's stroller, which relate to the technical field of children's strollers. The side-opening children's stroller chassis comprises: a main load-bearing chassis; a vehicle body connection assembly; a stabilizing bracket; a reinforcement locking device; and an unlocking device. The main load-bearing chassis comprises: an intermediate protective bottom plate, and a front chassis and a rear chassis rotatably mounted on the front and rear sides of the intermediate protective bottom plate, respectively. There are two groups of stabilizing brackets, one group is mounted on the lower left side of the main load-bearing chassis, and the other group is mounted on the lower right side of the main load-bearing chassis; each group of stabilizing brackets is V-shaped in the unfolded state, and the tip faces the inside. The side-opening children's stroller comprises: a side-opening children's stroller chassis; a chassis crossbar; a pull rod; a vertical rod; a fabric layer and wheels. The above technical solution has the advantages that the chassis can be folded, and the chassis has sufficient strength after unfolding, and has outstanding load-bearing capacity and stability, flexible control, strong expandability, and is convenient for children to get on and off the vehicle from both sides.

Description

Technical Field

[0001] The present invention relates to the technical field of children's vehicles, and in particular to a side-opening children's vehicle chassis and a side-opening children's vehicle. Background Art

[0002] Multifunctional strollers, also known as parent-child leisure strollers, twin strollers, multi-baby strollers, nursery strollers, etc., are all designed to be foldable in order to save storage space and facilitate storage and transportation.

[0003] However, the existing child stroller structure, such as the following published Chinese patent applications, the Chinese invention patent application with publication number CN113511251A, the Chinese invention patent application with publication number CN113548105A, and the Chinese invention patent application with publication number CN113879385A, both sides of the chassis are components of the main load-bearing and folding structure, and cannot be used in an unfolded state, and cannot meet the needs of children getting on and off the stroller from both sides by themselves. Adults need to carry children in and out from the upper side of the stroller, which will be a very tiring physical test for mothers, teachers or elderly people who may need to take care of more than two children at the same time; in addition, the strength of the chassis of the existing child stroller is not enough when it is unfolded and used, and it is not suitable for the needs of accompanying multiple children at the same time, and it is urgently needed to be improved. Summary of the invention

[0004] The purpose of the present invention is to provide a child trailer chassis and a child trailer in view of the defects and shortcomings of the prior art, wherein the chassis can be folded and has sufficient strength, load-bearing capacity, and outstanding stability after the chassis is unfolded, so as to fully meet the needs of children to get on and off the vehicle independently from both sides.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a child trailer chassis, comprising: a main load-bearing chassis; the main load-bearing chassis comprises: an intermediate protective bottom plate, and a front chassis and a rear chassis rotatably mounted on the front and rear sides of the intermediate protective bottom plate respectively; the front chassis and the rear chassis can both be vertically flipped around the intermediate protective bottom plate, and are located in the same plane as the intermediate protective bottom plate after unfolding;

[0006] Vehicle body connection components; there are four vehicle body connection components, two of which are rotatably connected to the left and right ends of the front side of the front chassis, and the other two are rotatably connected to the left and right ends of the rear side of the rear chassis, and the front chassis and the rear chassis can both be vertically flipped around the corresponding vehicle body connection components;

[0007] Stabilizing brackets; the stabilizing brackets have two groups, one group is mounted on the lower left side of the main load-bearing chassis, and the other group is mounted on the lower right side of the main load-bearing chassis; each group of the stabilizing brackets is V-shaped in the unfolded state, and the tip faces inward; each group of the stabilizing brackets includes: two mutually hinged reinforcing rods, the other end of one of the reinforcing rods is rotatably connected to the vehicle body connecting assembly on the front side, and the other end of the other reinforcing rod is rotatably connected to the vehicle body connecting assembly on the rear side, and both reinforcing rods can rotate horizontally around the corresponding vehicle body connecting assembly;

[0008] A reinforcement locking device; the reinforcement locking device is arranged between the intermediate protective bottom plate and the reinforcement rod hinge, and is used to lock the reinforcement rod at the lower side of the intermediate protective bottom plate; and,

[0009] Unlocking device; the unlocking device is used to control the locking or unlocking of the reinforcement locking device.

[0010] The present invention further provides that the two groups of the stabilizing brackets have a height difference to avoid interference between the two groups of the stabilizing brackets when the chassis of the side-opening children's stroller is folded.

[0011] The present invention is further provided with limit blocks covering the rotation points of the front chassis and the rear chassis on the left and right sides of the middle protective bottom plate, the limit blocks are sealed on the upper side and open on the lower side, and are used to prevent the front chassis and the rear chassis from rotating upward relative to the middle protective bottom plate.

[0012] The present invention is further provided that a hinge piece is fixedly provided at the hinge of the reinforcing rod, and the two reinforcing rods in each group of the stabilizing brackets are hinged through the hinge piece; a lock hole is provided on the hinge piece;

[0013] The reinforcement member locking device comprises:

[0014] Two sets of locking pins, which are mounted on the lower side of the middle protective bottom plate and pass through the locking holes of the stabilizing bracket, and are used to prevent the stabilizing bracket from folding inwards when the chassis of the side-opening baby stroller is in an unfolded state; and,

[0015] A chassis lock, which is mounted on the lower side of the intermediate protective bottom plate, and has a chassis lock sleeve at one end for sleeve-covering the hinged plate; the chassis lock is used to lock the stabilizing bracket to the lower side of the intermediate protective bottom plate, preventing the intermediate protective bottom plate from lifting upward relative to the stabilizing bracket;

[0016] One end of the unlocking device is connected to the chassis lock, and the other end is operated by the user, and is used to drive the chassis lock to cover the hinge piece to complete locking, or drive the chassis lock to leave the hinge piece to complete unlocking.

[0017] The present invention is further configured that a first positioning piece and a second positioning piece are fixedly mounted on the lower side of the hinge of the front chassis and the rear chassis close to the chassis lock; a first positioning hole is formed on the first positioning piece, and a second positioning hole is formed on the second positioning piece;

[0018] The chassis lock passes through the first positioning hole and can move left and right along the first positioning piece. A rotating rod is arranged at the other end of the chassis lock, and a plurality of first oblique rotating blocks are arranged at intervals around the rotating rod.

[0019] The unlocking device comprises: a knob located outside the second positioning piece;

[0020] A rotating sleeve rod having one end fixedly connected to the knob, the other end passing through the second positioning hole, rotatably sleeved on the rotating rod, and rotatable in the second positioning hole;

[0021] A plurality of second oblique rotating blocks are arranged at intervals on the circumference of the rotating sleeve rod, and abut against the first oblique rotating block in a locked state and are offset from the first oblique rotating block in an unlocked state;

[0022] a spring stopper provided on the first oblique rotating block; and

[0023] a chassis lock spring located between the spring stopper and the first positioning piece;

[0024] By rotating the knob, the second oblique rotating block is misaligned with the first oblique rotating block, and the chassis lock moves outward under the action of the rebound force of the chassis lock spring, so that the chassis lock leaves the hinge plate.

[0025] The present invention is further provided that cutting surfaces are provided on the chassis lock sleeve and the first positioning hole.

[0026] The present invention further provides that the area of ​​the knob is larger than the area of ​​the second positioning hole; and a limiting ring is provided on the rotating sleeve rod at the inner side of the second positioning piece to prevent the knob from sliding off the second positioning piece.

[0027] After adopting the above technical scheme, the beneficial effects of the present invention are as follows: in the present invention, by arranging two groups of stabilizing brackets on the lower side of the lower part of the main load-bearing chassis, the chassis has sufficient strength after being unfolded, and has outstanding load-bearing capacity and stability, and can fully meet the needs of children to get on and off the car independently from both sides; in addition, by arranging a reinforcement locking device and an unlocking device, when the chassis is stored, the stabilizing bracket can be unlocked and then stored, and after the chassis is unfolded, the stabilizing bracket can be locked, and the stability is more outstanding.

[0028] Another technical solution adopted by the present invention is: a side-opening baby stroller, comprising:

[0029] A side-opening child stroller chassis, a side-opening child stroller chassis as described above;

[0030] A chassis crossbar, which is transversely mounted between the left and right vehicle body connection components of the front chassis of the side-opening child vehicle chassis;

[0031] A pull rod rotatably mounted on the chassis crossbar;

[0032] Four vertical rods, which are vertically mounted on the upper side of the vehicle body connection assembly;

[0033] a fabric layer, which is enclosed between the four vertical rods and laid on the upper side of the chassis of the side-opening baby stroller; and

[0034] Four wheels are arranged on the lower side of the vehicle body connection assembly.

[0035] The present invention is further arranged that the side-opening baby stroller further comprises:

[0036] A folding chair, which is located inside the accommodating cavity enclosed by the fabric layer and is detachably mounted on the upper side of the main load-bearing chassis;

[0037] The folding chair locking mechanism is arranged between the folding chair and the main load-bearing chassis and is used to lock the folding chair on the main load-bearing chassis and can unlock it.

[0038] The present invention further provides that the wheel has an axle through-hole opened along the axis;

[0039] The side-opening baby stroller also includes:

[0040] A front frame, which is vertically mounted on the upper sides of the two front adapter blocks;

[0041] A rear frame, which is vertically mounted on the upper sides of the two adapter blocks at the rear side;

[0042] A hollow axle, which is rotatably assembled with the two wheels away from the pull rod through a bearing, and the hollow axle is provided with a first through groove;

[0043] A telescopic assembly, which is movably mounted on the hollow axle corresponding to the first through slot;

[0044] A rotating assembly installed in the hollow axle and used for rotating around the axis of the hollow axle to push the telescopic assembly and the elastic deceleration kit to extend toward the inner wall of the axle through-hole;

[0045] An elastic deceleration kit, which is sleeved outside the telescopic assembly and is used to contact or squeeze the inner wall of the shaft through hole under the push of the telescopic assembly to achieve a deceleration effect;

[0046] A rope body, one end of which is fixed and wound around the rotating assembly, and the other end of which is connected to the pull rope assembly;

[0047] a pull rope assembly, which is installed on the rear frame and is used to pull the rope body to unwind the rope body to drive the rotating assembly to rotate; and

[0048] A rope body reset spring is installed in the hollow axle and assembled on the rotating assembly, and is used for resetting the rotating assembly and the rope body.

[0049] After adopting the above technical solution, the beneficial effects of the present invention are:

[0050] In the present invention, a child stroller having the above-mentioned side-opening child stroller chassis is used, so that the child stroller has sufficient strength, load-bearing capacity, and outstanding stability after being unfolded, and can fully meet the needs of children to get on and off the stroller independently from both sides. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0052] Figure 1 It is a structural schematic diagram of the chassis of the children's vehicle in an unfolded state;

[0053] Figure 2 It is a structural schematic diagram of a children's vehicle chassis in a folded state;

[0054] Figure 3 It is a structural schematic diagram of the chassis of the baby stroller in the unfolded state from another perspective;

[0055] Figure 4 yes Figure 3 The enlarged view of point A in the middle;

[0056] Figure 5 is a schematic diagram of the structure of the reinforcement locking device and the unlocking device;

[0057] Figure 6 It is a schematic diagram of the structure of the chassis lock and unlock device;

[0058] Figure 7 It is a schematic diagram of the structure of the baby stroller in the unfolded state;

[0059] Figure 8 This is a schematic diagram of the structure of the baby stroller in the unfolded state, omitting the fabric layer and the roof;

[0060] Fig. 9It is a structural diagram of a baby stroller in a folded state;

[0061] Fig.10 It is a schematic diagram of the structure in which a folding chair is assembled on a child's car;

[0062] Fig.11 It is a schematic diagram of the structure of the folding chair assembly and the baby carriage;

[0063] Fig.12 It is a structural diagram of another perspective when the baby stroller is unfolded;

[0064] Fig.13 It is a schematic diagram of the structure of the lock tongue and the plug;

[0065] Fig.14 This is a schematic diagram of the brake cable routing;

[0066] Fig.15 It is a schematic diagram of the structure of the folding chair in the unfolded state;

[0067] Fig.16 yes Fig.15 The enlarged view of point B in the middle;

[0068] Fig.17 It is a schematic diagram of the structure of the folding chair in the folded state;

[0069] Fig.18 yes Fig.17 Enlarged view of point C in the middle;

[0070] Fig.19 It is a top view of the folding chair;

[0071] Fig. 20 yes Fig.19 In the figure, the cross-sectional view at AA;

[0072] Fig.21 is a schematic diagram of the structure of the seat, the seat cross tube and the first rotating fixing member;

[0073] Fig. 22 is a schematic diagram of the structure of a first crossbeam, a first leg and a second leg;

[0074] Fig.23 It is a schematic diagram of the structure of the reduction gear and the rear wheel;

[0075] Fig.24 yes Fig.23 The enlarged view of point D in the middle;

[0076] Fig.25 It is a schematic diagram of the structure of the rope body return spring, the rope winding column and the blocking column;

[0077] Fig.26 It is a schematic diagram of the structure of the tailstock, handle and rope assembly;

[0078] Fig. 27 It is a schematic diagram of the structure of the handle and pull rope assembly.

[0079] Description of reference numerals:

[0080] 1. Side-opening children's car chassis; 11. Main load-bearing chassis; 111. Intermediate protective bottom plate; 112. Front chassis; 113. Rear chassis; 13. Vehicle body connection assembly; 14. Stabilizing bracket; 141. Reinforcement rod; 142. Hinge plate; 15. Reinforcement locking device; 151. Lock pin; 152. Chassis lock; 1521. Chassis lock sleeve; 1522. Rotating rod; 1523. First oblique rotating block; 1524. Cutting surface; 153. First positioning plate; 154. Second positioning plate; 16. Unlocking device; 161. Knob; 162. Rotating sleeve rod; 163. Second oblique rotating block; 164. Spring stopper; 17. Stopper; 19. Chassis crossbar;

[0081] 21. Pull rod; 22. Vertical rod; 23. Front frame; 24. Rear frame; 241. Handle; 242. Tail frame; 25. Hollow axle; 26. Bearing;

[0082] 3. Fabric layer;

[0083] 4. wheel; 41. rear wheel; 411. dust cover; 412. raised part;

[0084] 5. Ceiling;

[0085] 6. Folding chair; 601. Backrest; 602a. First bracket; 602b. Second bracket; 603a. First connecting rod; 603b. Second connecting rod; 604a. First rotating fixture; 604b. Third rotating fixture; 6041. First long tube; 6042. First mounting strip; 605a. Second rotating fixture; 605b. Fourth rotating fixture; 606. Seat; 607a. First leg rotating fixture; 607b. Third leg rotating fixture; 608a. Second leg rotating fixture; 608b. Fourth leg rotating fixture; 609a. First leg; 609b. Third leg; 610a. Second leg; 610b. Fourth leg; 611a. First crossbeam; 611b. Second crossbeam; 6111. First sleeve; 712a. First spring; 613. Seat cross tube; 614. Plug;

[0086] 7. Folding chair locking mechanism; 71. Seat lock mounting box; 72. Lock tongue; 73. Unlock button mounting box; 74. Unlock button; 75. Brake cable;

[0087] 8. deceleration device; 81. telescopic assembly; 811. first arc-shaped push plate; 812. second arc-shaped push plate; 813. convex block; 814. first guide rail; 815. second guide rail; 82. rotating assembly; 821. rope winding column; 8211. recessed portion; 8212. convex point; 8213. boss; 822. push rod; 83. elastic deceleration kit; 84. rope body reset spring; 85. pull rope assembly; 851. slide bar; 852. inner rotating sleeve; 853. outer rotating sleeve; 8531. clamping block; 8532. convex ring; 854. limit sleeve; 855. limit ring; 86. limit member; 87. blocking column;

[0088] a, lock hole; b, accommodating cavity; c, first plug hole; d, through hole; e, pressing structure; f, shaft through hole; g, first through slot; h, second through slot; i, strip through slot; j, groove; k, inclined slot; m, card slot; n, installation slot; o, arc angle limit slot; p, second plug hole; q, slide slot. DETAILED DESCRIPTION

[0089] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0090] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. After reading this specification, those skilled in the art can make non-creative modifications to this embodiment as needed, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

[0091] Embodiment 1: This embodiment relates to a side-opening children's vehicle chassis 1, such as Figure 1-Figure 3 As shown, it includes: a main load-bearing chassis 11, a vehicle body connection assembly 13, a stabilizing bracket 14, a reinforcement locking device 15 and an unlocking device 16.

[0092] The main load-bearing chassis 11 includes: an intermediate protective bottom plate 111, and a front chassis 112 and a rear chassis 113 respectively rotatably mounted on the front and rear sides of the intermediate protective bottom plate 111. Both the front chassis 112 and the rear chassis 113 can be vertically flipped around the intermediate protective bottom plate 111, and are located in the same plane as the intermediate protective bottom plate 111 after unfolding.

[0093] There are four vehicle body connection components 13, two of which are rotatably connected to the left and right ends of the front side of the front chassis 112, and the other two are rotatably connected to the left and right ends of the rear side of the rear chassis 113. Both the front chassis 112 and the rear chassis 113 can be vertically flipped around the corresponding vehicle body connection components 13;.

[0094] like Figure 3As shown, there are two groups of stabilizing brackets 14, one group is mounted on the lower left side of the main load-bearing chassis 11, and the other group is mounted on the lower right side of the main load-bearing chassis 11. Each group of stabilizing brackets 14 is V-shaped in the unfolded state, and the tip faces the inside. Each group of stabilizing brackets 14 includes: two mutually hinged reinforcing rods 141, wherein the other end of one reinforcing rod 141 is rotatably connected to the vehicle body connection component 13 on the front side, and the other end of the other reinforcing rod 141 is rotatably connected to the vehicle body connection component 13 on the rear side, and both reinforcing rods 141 can rotate horizontally around the corresponding vehicle body connection component 13.

[0095] like Figure 3 and Figure 4 As shown, the reinforcement member locking device 15 is disposed between the hinged joint of the intermediate protection bottom plate 111 and the reinforcement rod 141, and is used to lock the reinforcement rod 141 to the lower side of the intermediate protection bottom plate 111. The unlocking device 16 is used to control the reinforcement member locking device 15 to be locked or unlocked.

[0096] By arranging two groups of stabilizing brackets 14 on the lower side of the main load-bearing chassis 11, the side-opening children's stroller chassis 1 has sufficient strength after being unfolded, and has outstanding load-bearing capacity and stability, and can fully meet the needs of children to get on and off the car independently from both sides; in addition, by arranging a reinforcement locking device 15 and an unlocking device 16, when the side-opening children's stroller chassis 1 is stored, the stabilizing bracket 14 can be unlocked and then stored, and after the side-opening children's stroller chassis 1 is unfolded, the stabilizing bracket 14 can be locked, and the stability is more excellent.

[0097] A V-shaped stabilizing bracket 14 is adopted with the tip facing inwards, so no extra space is occupied whether the side-opening child stroller chassis 1 is stored or unfolded, and the line connecting the V-shaped stabilizing bracket 14 and the main load-bearing chassis 11 is a triangle, so the structure is very stable.

[0098] As a preferred solution, Figure 2 As shown, the two groups of stabilizing brackets 14 have a height difference to avoid interference between the two groups of stabilizing brackets 14 when the side-opening baby stroller chassis 1 is folded.

[0099] As a preferred solution, Figure 1 As shown, the left and right sides of the middle protective bottom plate 111 are respectively provided with limit blocks 17 covering the rotation position of the front chassis 112 and the rear chassis 113. The limit blocks 17 are sealed on the upper side and open on the lower side, and are used to prevent the front chassis 112 and the rear chassis 113 from rotating upward relative to the middle cross plate 11. By providing the limit blocks 17, the front chassis 112 and the rear chassis 113 can only rotate downward relative to the middle cross plate 11, thereby improving the convenience and safety of storing the side-opening child stroller chassis 1.

[0100] In this embodiment, if Figure 3-Figure 5As shown, a hinge piece 142 is fixedly provided at the hinge of the reinforcing rod 141, and the two reinforcing rods 141 in each group of stabilizing brackets 14 are hingedly connected through the hinge piece 142. A lock hole a is provided on the hinge piece 142. More specifically, in this embodiment, the hinge pieces 142 on the two reinforcing rods 141 in the same group of stabilizing brackets 14 are hingedly connected through an axis so that the reinforcing rods 141 are hingedly assembled. The reinforcing member locking device 15 includes: two groups of locking pins 151 and a chassis lock 152. Specifically, as shown in FIG. Figure 4 and Figure 5 As shown, the lock pin 151 is mounted on the lower side of the middle protective bottom plate 111 and passes through the lock hole a of the stabilizing bracket 14, and is used to prevent the stabilizing bracket 14 from folding inward when the side-opening child stroller chassis 1 is in the unfolded state. The chassis lock 152 is mounted on the lower side of the middle protective bottom plate 111, and one end is provided with a chassis lock sleeve 1521 for sleeve-covering the hinged piece 142. The chassis lock 152 is used to lock the stabilizing bracket 14 on the lower side of the middle cross plate 11, and prevent the middle protective bottom plate 111 from lifting upward relative to the stabilizing bracket 14. One end of the unlocking device 16 is connected to the chassis lock 152, and the other end is for user operation, and is used to drive the chassis lock 152 to sleeve the hinged piece 142 to complete locking, or drive the chassis lock 152 to leave the hinged piece 142 to complete unlocking.

[0101] When storing, after the unlocking device 16 drives the chassis lock 152 to leave the hinged piece 142, the hinged piece 142 is no longer restricted by the chassis lock 152, that is, the intermediate protective bottom plate 111 can be lifted upward relative to the stable bracket 14. After the intermediate protective bottom plate 111 is lifted upward, the lock pin 151 leaves the lock hole a driven by the intermediate protective bottom plate 111, so that the stable bracket 14 is unlocked. After unlocking, the intermediate protective bottom plate 111 is further lifted upward, and the front chassis 112 and the rear chassis 113 on both sides are rotated and folded downward. As the distance between the front chassis 112 and the rear chassis 113 becomes shorter, the V-shaped stable bracket 14 folds inward, the angle becomes smaller, and the storage is completed.

[0102] When unfolding, the front chassis 112 and the rear chassis 113 are unfolded to both sides. As the distance between the front chassis 112 and the rear chassis 113 becomes longer, the V-shaped stabilizing bracket 14 is unfolded outward. After being fully unfolded, the locking pin 151 falls through the locking hole a of the stabilizing bracket 14 to prevent the stabilizing bracket 14 from folding inward, and then the chassis lock 152 is driven by the unlocking device 16 to cover the hinge piece 142 to complete the locking.

[0103] On this basis, if Figure 4-Figure 6As shown, the first positioning piece 153 and the second positioning piece 154 are fixedly mounted on the lower side of the hinge of the connecting rod 12 near the chassis lock 152 of the front chassis 112 and the rear chassis 113. A first positioning hole (not shown) is provided on the first positioning piece 153, and a second positioning hole (not shown) is provided on the second positioning piece 154. The chassis lock 152 passes through the first positioning hole and can move left and right along the first positioning piece 153. A rotating rod 1522 is provided at the other end of the chassis lock 152, and a plurality of first oblique rotating blocks 1523 are provided at intervals around the rotating rod 1522. As shown in the figure, the unlocking device 16 includes: a knob 161, a rotating sleeve rod 162, a plurality of second oblique rotating blocks 163, a spring stopper 164 and a chassis lock spring (not shown). Among them, the knob 161 is located outside the second positioning piece 154. One end of the rotating sleeve rod 162 is fixedly connected to the knob 161, and the other end passes through the second positioning hole, is rotatably sleeved on the rotating rod 1522, and can rotate in the second positioning hole. The second oblique rotating block 163 is arranged at intervals on the circumference of the rotating sleeve rod 162, and abuts against the first oblique rotating block 1523 in the locked state, and is misaligned with the first oblique rotating block 1523 in the unlocked state. The spring stopper 164 is arranged on the first oblique rotating block 1523. The chassis lock spring is located between the spring stopper 164 and the first positioning piece 153. When in the locked state, the chassis lock spring is in a compressed state.

[0104] When unlocking, the knob 161 is rotated, the second oblique rotating block 163 is misaligned with the first oblique rotating block 1523, and the chassis lock 152 moves outward under the action of the chassis lock spring rebound force, so that the chassis lock 152 leaves the hinge piece 142, and the unlocking is completed. When locking, the knob 161 is rotated in the opposite direction, and the second oblique rotating block 163 rotates to drive the first oblique rotating block 1523 to move inward, thereby pushing the chassis lock 152 to cover the hinge piece 142, and the locking is completed. At this time, the chassis lock spring is in a compressed state again.

[0105] Further, such as Figure 6 As shown, the chassis lock sleeve 1521 and the first positioning hole are both provided with a cutting surface 1524. Such a setting makes it impossible for the chassis lock sleeve 1521 to rotate in the first positioning hole, which is more conducive to unlocking and locking the chassis lock 152.

[0106] Furthermore, the area of ​​the knob 161 is larger than the area of ​​the second positioning hole. A limiting ring (not shown) is provided on the rotating sleeve 162 inside the second positioning piece 154 to prevent the knob 161 from sliding off the second positioning piece 154 .

[0107] Embodiment 2: This embodiment relates to a side-opening baby stroller, such as Figure 7-Figure 9 As shown, the side-opening baby stroller comprises: a chassis 1, a chassis crossbar 19, a pull rod 21, four vertical rods 22, a fabric layer 3, four wheels 4 and a roof 5.

[0108] The side-opening stroller chassis 1 is the side-opening stroller chassis 1 described in the first embodiment. The chassis crossbar 19 is transversely mounted between the left and right vehicle body connection components 13 of the front chassis 112 of the side-opening stroller chassis 1. The pull rod 21 is rotatably mounted on the chassis crossbar 19. Four vertical rods 22 are vertically mounted on the upper side of the vehicle body connection component 13. The fabric layer 3 is enclosed between the four vertical rods 22 and laid on the upper side of the side-opening stroller chassis 1. Four wheels 4 are arranged on the lower side of the adapter block 13. The roof 5 is detachably mounted on the upper side of the four vertical rods 22.

[0109] When folding and storing, the ceiling 5 is first taken out, and since the fabric layer 3 is a flexible material, it can be folded and stored without taking it out. In this embodiment, the pull rod 21 is a folding pull rod 21.

[0110] Embodiment 3: This embodiment relates to a side-opening baby stroller. Based on the embodiment 2, Figure 7-10 As shown, the side-opening baby stroller further includes: a folding chair 6 and a folding chair locking mechanism 7. The folding chair 6 is located inside the accommodating cavity b enclosed by the fabric layer 3 and is detachably mounted on the upper side of the main load-bearing chassis 11. The folding chair locking mechanism 7 is disposed between the folding chair 6 and the main load-bearing chassis 11 and is used to lock the folding chair 6 on the main load-bearing chassis 11 and can unlock it.

[0111] A folding chair 6 is used. After the folding chair 6 is folded, it occupies less space in the accommodating cavity b, so that there is more space that can be freely arranged in the accommodating cavity b. In addition, after the folding chair 6 is folded, it does not affect the folding of the side-opening children's car chassis 1; and by providing a folding chair locking mechanism 7 between the folding chair 6 and the main load-bearing chassis 11, the folding chair 6 can be fixed on the main load-bearing chassis 11, and the assembly is stable and safe; and because the folding chair 6 is detachably assembled on the main load-bearing chassis 11, the folding chair locking mechanism 7 can unlock the folding chair 6. After the folding chair 6 is disassembled, the space in the accommodating cavity b is larger, and it can be used as a shopping cart, a camping car, etc., and the accommodating cavity b can also be expanded into a parent-child game platform; in addition, the folding chair 6 is detachable, and it is also more convenient to clean.

[0112] In this embodiment, if Figure 10-12 As shown, the main load-bearing chassis 11 is provided with a first socket c, and the lower side of the folding chair 6 is provided with a plug 614 adapted to the first socket c and detachably plugged into the first socket c. In other embodiments, the folding chair 6 can also adopt other structures so as to be detachably assembled on the main load-bearing chassis 11.

[0113] As a preferred solution, the folding chair 6 is provided with a cavity on the upper side of the plug 614. The plug 614 can be retracted into the cavity to make the lower side of the folding chair 6 flush. After the folding chair 6 is removed from the main load-bearing chassis 11, the plug 614 can be retracted into the cavity, which does not affect the independent use of the folding chair 6.

[0114] like Fig.10 , Fig.12 , Fig.13 and Fig.14 As shown, in this embodiment, the folding chair locking mechanism 7 includes: a through hole d opened in the horizontal direction of the plug 614, a seat lock mounting box 71 mounted on the lower side of the main load-bearing chassis 11, a lock tongue 72 slidably mounted in the seat lock mounting box 71 and used to pass through or exit the through hole d; an unlocking button mounting box 73 mounted on the lower side of the main load-bearing chassis 11; an unlocking button 74 with one end mounted in the unlocking button mounting box 73 and the other end extending out of the unlocking button mounting box 73 for the user to press; and a brake cable 75 with one end passing through the seat lock mounting box 71 and connected to the lock tongue 72 and the other end passing through the unlocking button mounting box 73 and connected to the unlocking button 74. The user presses the unlocking button 74, the brake cable 75, and the brake cable 605 drive the lock tongue 72 to exit the through hole d, so that the folding chair 6 can be taken out.

[0115] The above is only a specific embodiment of the folding chair locking mechanism 7. In other embodiments, the folding chair locking mechanism 7 may also adopt other structures, as long as the folding chair 6 can be locked on the main load-bearing chassis 11 and can be unlocked.

[0116] In this embodiment, the folding chair 6 is a linkage folding chair 6, which makes folding easier and more convenient.

[0117] In this embodiment, if Figure 15-Figure 20 As shown, the linked folding chair 6 includes: a backrest 601, a first bracket 602a, a second bracket 602b, a first connecting rod 603a, a second connecting rod 603b, a first rotating fixing member 604a, a second rotating fixing member 605a, a third rotating fixing member 604b, a fourth rotating fixing member 605b, a seat 606, a first leg rotating member 607a, a second leg rotating member 608a, a third leg rotating member 607b, a fourth leg rotating member 608b, a first leg 609a, a second leg 610a, a third leg 609b, a fourth leg 610b, a first cross beam 611a, a second cross beam 611b, a first spring 712a and a second spring (not shown).

[0118] Specifically, Fig.15 and Fig.17As shown, the first bracket 602a is fixedly assembled at one end of the lower side of the backrest 601 and extends to the front side of the backrest 601; the second bracket 602b is fixedly assembled at the other end of the lower side of the backrest 601 and extends to the front side of the backrest 601. One end of the first connecting rod 603a is rotatably assembled at the extended end of the first bracket 602a through a first rotating shaft (not shown); one end of the second connecting rod 603b is rotatably assembled at the extended end of the second bracket 602b through a second rotating shaft (not shown). The first rotating fixing member 604a is fixedly sleeved on the first connecting rod 603a; the third rotating fixing member 604b is fixedly sleeved on the second connecting rod 603b. The seat 606 is fixedly assembled between the first rotating fixing member 604a and the third rotating fixing member 604b and can rotate around the backrest 601. The second rotating fixed sleeve is connected to the end of the first connecting rod 603a away from the backrest 601; the fourth rotating fixed member 605b is fixedly connected to the end of the second connecting rod 603b away from the backrest 601. The first leg rotating member 607a is rotatably connected to the first connecting rod 603a and is located between the first rotating fixed member 604a and the first bracket 602a; the third leg rotating member 607b is rotatably connected to the second connecting rod 603b and is located between the third rotating fixed member 604b and the second bracket 602b. The second leg rotating member 608a is rotatably connected to the first connecting rod 603a and is located between the first rotating fixed member 604a and the second rotating fixed member 605a; the fourth leg rotating member 608b is rotatably connected to the second connecting rod 603b and is located between the third rotating fixed member 604b and the fourth rotating fixed member 605b. The first leg 609a is disposed on the lower side of the first leg rotating member 607a; the second leg 610a is disposed on the lower side of the second leg rotating member 608a; the third leg 609b is disposed on the lower side of the third leg rotating member 607b; and the fourth leg 610b is disposed on the lower side of the fourth leg rotating member 608b. The first crossbeam 611a is fixedly connected between the first leg 609a and the second leg 610a; the second crossbeam 611b is fixedly connected between the third leg 609b and the fourth leg 610b. Fig. 20 As shown, the first spring 712a is sleeved on the first connecting rod 603a, and one end abuts against the second leg rotating member 608a, and the other end abuts against the second rotating fixed member 605a; the second spring (not shown) is sleeved on the second connecting rod 603b, one end abuts against the third leg rotating member 607b, and the other end abuts against the fourth rotating fixed member 605b.

[0119] More specifically, if Fig.18 As shown, there is a push structure e between the second leg rotating member 608a and the second rotating fixed member 605a, and between the fourth leg rotating member 608b and the fourth rotating fixed member 605b (the push structure e can refer to the structure of a ballpoint pen). Figure 8Similarly, the distance between the second rotating shaft and the front end of the second bracket 602b is greater than the distance between the second rotating shaft and the upper end of the second bracket 602b.

[0120] When the linkage folding chair 6 is in the unfolded state, Fig.15 and Fig. 20 As shown, one end of the first leg rotating member 607a abuts against the first bracket 602a, and the other end abuts against the first rotating fixed member 604a, one end of the second leg rotating member 608a abuts against the second rotating fixed member 605a, and the other end leaves a travel space with the first rotating fixed member 604a, and the first spring 712a is in a compressed state; at the same time, one end of the third leg rotating member 607b abuts against the second bracket 602b, and the other end abuts against the third rotating fixed member 604b, one end of the third leg rotating member 607b abuts against the fourth rotating fixed member 605b, and the other end leaves a travel space with the third rotating fixed member 604b, and the second spring is in a compressed state.

[0121] like Fig.17 As shown, the seat 606 is rotated upward. Since the distance between the first rotating shaft and the front end of the first bracket 602a is greater than the distance between the first rotating shaft and the upper end of the first bracket 602a, there is a travel space between the first leg rotating member 607a and the first bracket 602a. The second leg rotating member 608a moves toward the second rotating fixed member 605a under the action of the rebound force of the first spring 712a. Under the action of the pressing structure e, the second leg 610a and the first leg 609a are rotated and folded toward the middle of the lower side of the seat 606; similarly, there is a travel space between the third leg rotating member 607b and the second bracket 602b. The fourth leg rotating member 608b moves toward the fourth rotating fixed member 605b under the action of the rebound force of the second spring. Under the action of the pressing structure e, the fourth leg 610b and the third leg 609b are rotated and folded toward the middle of the lower side of the seat 606.

[0122] When the linkage folding chair 6 of this embodiment is used, it is only necessary to rotate the seat of the folding chair 6 toward the backrest 601 to drive the four legs to be retracted and finally folded and stored under the seat 606, which is very convenient.

[0123] Furthermore, if Fig. 22As shown, first sleeves 6111 are provided at both ends of the first crossbeam 611a, and the first crossbeam 611a is sleeved on the lower side of the first leg 609a and the second leg 610a through two first sleeves 6111; second sleeves (not shown) are provided at both ends of the second crossbeam 611b, and the second crossbeam 611b is sleeved on the lower side of the third leg 609b and the fourth leg 610b through two second sleeves. Such a setting is equivalent to combining the first leg 609a and the second leg 610a into one leg, and combining the third leg 609b and the fourth leg 610b into another leg, which is supported by the first crossbeam 611a and the second crossbeam 611b.

[0124] Furthermore, if Fig.17 As shown, the length of the legs is less than or equal to half the length of the seat 606. Thereby, after the linkage folding chair 6 is folded, there will be no interference between the legs.

[0125] like Fig.15 As shown, in this embodiment, there are two plugs 614, one is arranged at the lower side of the first crossbeam 611a, and the other is arranged at the lower side of the second crossbeam 611b. In order to make the legs as long as possible without interfering with each other when folded, as shown in FIG. Fig.17 As shown, the two plugs 614 are staggered.

[0126] In this embodiment, except for the plug 614 structure, the entire linkage folding chair 6 is arranged in bilateral symmetry.

[0127] The first bracket 602a and the second bracket 602b are both L-shaped, and the included angles are both 90°-110°, so the included angle between the seat 606 and the backrest 601 is also 90°-110°. In this embodiment, the included angle between the seat 606 and the backrest 601 is 95°.

[0128] In this embodiment, if Fig.21 As shown, the first rotating fixed member 604a includes: a first long tube 6041 fixedly sleeved on the first connecting rod 603a, and a first mounting strip 6042 provided on the upper side of the first long tube 6041 for mounting the seat 606. The third rotating fixed member 604b includes: a second long tube (not shown) fixedly sleeved on the first connecting rod 603a, and a second mounting strip (not shown) provided on the upper side of the second long tube for mounting the seat 606. Fig.15 and Fig.21 As shown, the linkage folding chair 6 further includes: a seat cross tube 613 , one end of which is mounted on the first mounting strip 6042 , the other end of which is mounted on the second mounting strip, and which is located on the side of the seat 606 close to the backrest 601 .

[0129] As a preferred solution, there are two rows of folding chairs 6, which are arranged opposite to each other, and there is space for children to place their legs between the two rows of folding chairs 6. In this embodiment, as shown in the figure, each row has a folding chair 6. When more seats are needed, in addition to widening the side-opening child stroller chassis 1, the length of the seat 606 can also be increased, or more folding chairs 6 can be arranged.

[0130] The working principle of this embodiment is roughly as follows: a folding chair 6 is used. After the folding chair 6 is folded, it occupies less space in the accommodating cavity b, so that there is more space that can be freely arranged in the accommodating cavity b. In addition, after the folding chair 6 is folded, it does not affect the folding of the side-opening children's car chassis 1; and by providing a folding chair locking mechanism 7 between the folding chair 6 and the main load-bearing chassis 11, the folding chair 6 can be fixed on the main load-bearing chassis 11, and the assembly is stable and safe; and because the folding chair 6 is detachably assembled on the main load-bearing chassis 11, the folding chair locking mechanism 7 can unlock the folding chair 6. After the folding chair 6 is disassembled, the space in the accommodating cavity b is larger, and it can be used as a shopping cart, camping car, etc., and the accommodating cavity b can also be expanded into a parent-child game platform; in addition, the folding chair 6 is detachable, and it is also more convenient to clean.

[0131] Embodiment 4: This embodiment relates to a side-opening baby stroller. Based on the embodiment 2, Figure 7 , Fig.23 and Fig.24 As shown, the side-opening baby stroller also includes: a front frame 23, a rear frame 24, a hollow axle 25, a telescopic assembly 81, a rotating assembly 82, an elastic deceleration kit 83, a rope body (not shown), a pull rope assembly 85 and a rope body return spring 84.

[0132] Among them, the front frame 23 is vertically assembled on the upper side of the two front body connection components 13; the rear frame 24 is vertically assembled on the upper side of the two rear body connection components 13. The wheel 4 has an axial through hole f coaxially arranged with the axis. Specifically, the axial through hole f runs through both sides of the wheel 4, and the outer side of the wheel 4 is clamped with a dust cover 411 for closing one end of the axial through hole f. The hollow axle 25 is fixedly assembled on the lower side of the two rear body connection components 13, and is rotatably assembled with the wheel 4 through the bearing 26. The bearing 26 plays the role of bearing the shaft and provides radial activity space for the telescopic component 81 and the elastic deceleration kit 83 in the axial through hole f. And the end of the hollow axle 25 inserted into the axial through hole f is provided with a first through groove g.

[0133] The telescopic component 81, the rotating component 82, the elastic deceleration kit 83, the rope body, the pull rope assembly 85 and the rope body reset spring 84 constitute the deceleration device 8. The telescopic component 81 is movably installed on the hollow axle 25 corresponding to the first through groove g, and the rotating component 82 is installed in the hollow axle 25, and is used to rotate around the axis of the hollow axle 25 to push the telescopic component 81 and the elastic deceleration kit 83 to extend toward the inner wall of the shaft through hole f. The elastic deceleration kit 83 is sleeved on the outside of the telescopic component 81, and is used to contact or squeeze the inner wall of the shaft through hole f under the push of the telescopic component 81 to achieve a deceleration effect. One end of the rope body is fixed and wound around the rotating component 82, and the other end is connected to the pull rope assembly 85.

[0134] The pull rope assembly 85 is installed on the rear frame 24, specifically on the handle 241 of the rear frame 24, and is used to pull the rope to unwind the rope to drive the rotating assembly 82 to rotate. The rope body reset spring 84 is installed in the hollow axle 25 and assembled on the rotating assembly 82, and is used to reset the rotating assembly 82 and the rope.

[0135] When decelerating, the rope body is pulled up by operating the pull rope assembly 85 so that the other end of the rope body is gradually unwound from the rotating assembly 82, thereby driving the rotating assembly 82 to rotate. The end of the rotating assembly 82 close to the telescopic assembly 81 pushes the telescopic assembly 81 to extend toward the inner wall of the shaft perforation f, thereby causing the elastic deceleration kit 83 to expand and deform and squeeze against the inner wall of the shaft perforation f. The elastic deceleration kit 83 and the inner wall of the shaft perforation f generate a large friction force opposite to the forward direction of the child trailer, thereby achieving the effect of deceleration. The greater the degree of squeezing between the elastic deceleration kit 83 and the inner wall of the shaft perforation f, the greater the deceleration effect, which can even have a braking effect.

[0136] By adding the deceleration device 8, the difficulty of decelerating the side-opening baby stroller can be effectively reduced, achieving a labor-saving effect, and the elderly can also operate it easily, and the safety of use is greatly improved.

[0137] Furthermore, if Fig.24 As shown, the rotating assembly 82 includes a rope winding column 821 and a push rod 822 .

[0138] The rope column 821 has a recessed portion 8211 for the rope body to be wound. Specifically, one end of the rope body is fixed to the recessed portion 8211 by glue, and then several turns are arranged on the recessed portion 8211. The diameter of the rope column 821 can be achieved so that it can rotate in close contact with the inner wall of the hollow axle 25 when rotating. The push rod 822 is fixedly assembled on one end of the rope column 821 close to the telescopic component 81, and is used to rotate around its axis to change the contact position with the telescopic component 81, so that the distance between its axis and the contact position is continuously increased to push the telescopic component 81 to extend. Preferably, the cross section of the push rod 822 is a rounded rectangle or an ellipse. In this embodiment, the cross section of the push rod 822 is a rounded rectangle. A mounting hole matching the shape of the push rod 822 is provided at one end of the rope winding column 821 close to the push rod 822. The push rod 822 is inserted into the mounting hole. A strip through groove i is radially opened from the hole end of the mounting hole on the rope winding column 821. The strip through groove i facilitates the installation of the push rod 822 in the mounting hole.

[0139] The first through groove g passes through two opposite arc surfaces on the hollow axle 25, and the telescopic component 81 includes: a first arc-shaped push plate 811 and a second arc-shaped push plate 812 symmetrically arranged, and the cross-sections of both are arc-shaped concentric with the hollow axle 25, and the concave surfaces thereof are extended with protrusions 813, and the protrusions 813 are inserted into the hollow axle 25 through the first through groove g. Preferably, the protrusions 813 are square in shape, and their corners are rounded.

[0140] Furthermore, in order to facilitate the user to accurately operate the pull rope assembly 85 to avoid excessive pulling of the rope body causing brake failure.

[0141] like Fig.24 and Fig.25 As shown, a blocking column 87 is fixedly provided at one end of the hollow axle 25 near the rope column 821 by screws, and one of the blocking column 87 and the rope column 821 is provided with an arc angle limiting groove o, which is 1 / 4-1 / 6 of an arc, and the other is provided with a convex point 8212, which can slide in the arc angle limiting groove o and limit the rotation angle of the rope column 821. The rope body reset spring 84 is a torsion spring, one end of which is clamped on the blocking column 87 and the other end is clamped on the rope column 821.

[0142] In this embodiment, a second plug hole p is provided at one end of the blocking column 87, and an arc angle limiting groove o is provided at the second plug hole p away from the hole mouth. A boss 8213 is provided at one end of the rope winding column 821, which is plugged with the second plug hole p and can rotate relatively, and a convex point 8212 is provided on the boss 8213. The arc angle limiting groove o is a 1 / 4 arc, which limits the rotation angle of the push rod 822 to 90 degrees. In the initial state, the push rod 822 is parallel to the convex block 813 and does not contact it. As the push rod 822 gradually rotates, the rounded corner of the push rod 822 contacts the convex block 813 and rotates in accordance with the convex block 813 to gradually push out the first arc push plate 811 and the second arc push plate 812 together with the elastic deceleration kit 83 until they rotate to degrees, reaching the maximum limit of pushing out, that is, the maximum limit of deceleration.

[0143] In order to make the telescopic movement of the first arc-shaped push plate 811 and the second arc-shaped push plate 812 more stable and reliable, a first guide rail 814 and a second guide rail 815 slidably assembled with the first guide rail 814 are respectively provided on the concave surfaces of the first arc-shaped push plate 811 and the second arc-shaped push plate 812.

[0144] Furthermore, if Fig.24 As shown, in order to enhance the deceleration effect, a plurality of grooves j are provided on one side of the outer periphery of the elastic deceleration kit 83 and the inner wall of the shaft through hole f of the wheel 4, and a protrusion 412 is provided on the other side, which corresponds to and matches the grooves j one by one. In this embodiment, the grooves j are provided on the elastic deceleration kit 83 and are evenly distributed along the outer periphery of the elastic deceleration kit 83. The protrusion 412 is provided on the inner wall of the shaft through hole f.

[0145] Furthermore, if Fig.23 As shown, the bearings 26 include at least two, which are respectively arranged at both ends of the elastic reduction kit 83, and the outer rings thereof are higher than the outer rings of the elastic reduction kit 83. A limit member 86 is fixedly installed at the end of the hollow axle 25 near the bearing 26, and the limit member 86 is used to limit the displacement of the bearing 26 and the reduction device 8.

[0146] Furthermore, if Fig.26 and Fig. 27 As shown, two mutually symmetrical sliding grooves q are provided on the handle 241 along the axial direction, and the pull rope assembly 85 includes: a sliding rod 851, an inner rotating sleeve 852, an outer rotating sleeve 853 and a limiting sleeve 854.

[0147] The slide bar 851 is slidably mounted on the two slide grooves q, and one end of the rope body away from the rotating assembly 82 is tied to the slide bar 851. Under the action of the rope body reset spring 84, the rope body is in a tensioned state. The two ends of the slide bar 851 are fixed with limit rings 855 outside the handle 241, and the limit rings 855 are used to prevent the slide bar 851 from sliding axially. The inner rotating sleeve 852 is rotatably mounted on the handle 241, and it has an inclined groove k arranged in a one-to-one correspondence with the slide groove q. The inclined groove k forms an angle with the slide groove q. The slide bar 851 passes through the slide groove q and is placed in the inclined groove k. The inner rotating sleeve 852 is used to rotate relative to the handle 241 to make the slide bar 851 slide along the inclined groove k and the slide groove q, thereby pulling the rope body to unwind it from the rotating assembly 82. The outer rotating sleeve 853 is transmission-connected to the outside of the inner rotating sleeve 852, and its end is rotatably assembled on the limit sleeve 854. The limit sleeve 854 is sleeved on the handle 241 and fixed to the handle 241 by screws. The outer rotating sleeve 853 is used for the user to rotate to drive the inner rotating sleeve 852 to rotate.

[0148] Specifically, the inner rotating sleeve 852 is provided with a plurality of slots m, and the outer rotating sleeve 853 is provided with a plurality of snap-in blocks 8531 snap-in with the slots m corresponding to the slots m, and the snap-in blocks 8531 snap-in with the slots m to realize the transmission assembly of the inner rotating sleeve 852 and the outer rotating sleeve 853. In addition, a convex ring 8532 is provided at one end of the outer rotating sleeve 853 close to the limiting sleeve 854, and an installation groove n adapted to the convex ring 8532 is provided on the inner wall of the limiting sleeve 854, and the convex ring 8532 can be rotatably inserted into the installation groove n to realize the assembly between the limiting sleeve 854 and the outer rotating sleeve 853.

[0149] Furthermore, the rear frame 24 includes a tail frame 242, and the handle 241 is installed on the upper end of the tail frame 242, and the tail frame 242 and the handle 241 are both hollow structures. The hollow axle 25 is radially provided with a second through groove h leading to the rotating assembly 82 for the rope to pass through.

[0150] It should be noted that the two ends of the hollow axle 25 are rotatably assembled on the two rear wheels 41 through bearings 26 respectively, and the reduction device 8 includes two groups symmetrically installed on the two rear wheels 41. The outer rotating sleeves 853 of the pull rope assemblies 85 of the two groups of reduction devices 8 are clamped at opposite ends to achieve synchronous rotation.

[0151] The working principle of this embodiment is as follows: when the reduction gear 8 is used, the operator applies an external force to rotate the outer rotating sleeve 853, and the outer rotating sleeve 853 drives the inner rotating sleeve 852 to rotate relative to the handle 241, so that the slide bar 851 slides along the slide groove q under the action of the inclined groove k, thereby pulling the rope body to gradually unwind it from the rope winding column 821, and the rope winding column 821 rotates in contact with the hollow axle 25, and drives the push rod 822 to rotate. As the push rod 822 gradually rotates, the rounded corner of the push rod 822 contacts the protrusion 813 and rotates in contact with the protrusion 813 to push the first arc-shaped push plate 81 1 and the second arc-shaped push plate 812 are gradually pushed outward together with the elastic deceleration kit 83 until the elastic deceleration kit 83 contacts and squeezes the inner wall of the shaft through hole f to achieve a deceleration effect. The limit of deceleration depends on the stroke of the first arc-shaped push plate 811 and the second arc-shaped push plate 812, that is, until the push rod 822 rotates to 90 degrees, the convex point 8212 of the rope winding column 821 is limited by the arc-shaped angle limiting groove o on the blocking column 87, the push rod 822 stops, and the first arc-shaped push plate 811 and the second arc-shaped push plate 812 reach the maximum limit of pushing out, that is, the maximum limit of deceleration.

[0152] The operator cancels the force applied to the outer rotating sleeve 853. Under the action of the spring, the rope column 821 and the push rod 822 rotate and reset, the rope body resumes the number of turns wound with the rope column 821, and pulls the slide bar 851 to slide along the slide groove q, and the slide bar 851 pushes the inner rotating sleeve 852 and the outer rotating sleeve 853 to reset. In addition, the elastic deceleration kit 83 resets under the action of its own restoring force and drives the first arc-shaped push plate 811 and the second arc-shaped push plate 811 to shrink and reset.

[0153] Embodiment 5: This embodiment relates to a side-opening baby stroller. The difference between this embodiment and embodiment 4 is that the rotating assembly 82 includes: a rope column 821, a fixed shaft and a push rod 822. The rope column 821 has a recessed portion 8211 for the rope body to be wound. Specifically, one end of the rope body is fixed to the recessed portion 8211 by glue, and then several turns are wound on the recessed portion 8211. The diameter of the rope column 821 can be achieved to rotate in close contact with the inner wall of the hollow axle 25 during rotation. One end of the fixed shaft is fixedly connected to one end of the rope column 821 close to the telescopic assembly 81, and the push rod 822 is fixedly assembled to the other end of the fixed shaft and is perpendicular to the fixed shaft to form a T-shaped structure. Preferably, the two ends of the push rod 822 are hemispherical.

[0154] The first through slot g passes through two opposite arc surfaces on the hollow axle 25, and the telescopic assembly 81 includes: a first arc-shaped push plate 811 and a second arc-shaped push plate 812, both of which are symmetrically arranged, and the cross-sections of the two are arc-shaped concentric with the hollow axle 25, and the concave surfaces are provided with a slope protrusion 412, which is extended incrementally along the direction of movement of the push rod 822. The two slope protrusions 412 are placed in the hollow axle 25 through the first through slot g.

[0155] Two mutually symmetrical sliding grooves q are provided on the handle 241 along the axial direction, and the pull rope assembly 85 includes: a sliding rod 851 and a push handle. The sliding rod 851 is slidably mounted on the two sliding grooves q, and one end of the rope body away from the rotating assembly 82 is tied to the sliding rod 851, and the rope body is in a tensioned state under the action of the rope body reset spring 84. The push handle is fixedly installed at both ends of the sliding rod 851, and is used to prevent the push rod 822 from moving along the axial direction, and is used for the operator to push, so that the sliding rod 851 slides along the sliding groove q, thereby pulling the rope body.

[0156] The above is only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A side-opening children's car chassis, characterized in that: include: Main load-bearing chassis (11); The main load-bearing chassis (11) comprises: an intermediate protective bottom plate (111), and a front chassis (112) and a rear chassis (113) which are rotatably mounted on the front and rear sides of the intermediate protective bottom plate (111), respectively; the front chassis (112) and the rear chassis (113) can both be vertically flipped around the intermediate protective bottom plate (111), and are located in the same plane as the intermediate protective bottom plate (111) after being unfolded; A vehicle body connection assembly (13); there are four vehicle body connection assemblies (13), two of which are rotatably connected to the left and right ends of the front side of the front chassis (112), and the other two are rotatably connected to the left and right ends of the rear side of the rear chassis (113); the front chassis (112) and the rear chassis (113) can both be vertically flipped around the corresponding vehicle body connection assembly (13); A stabilizing bracket (14); the stabilizing bracket (14) has two groups, one group is mounted on the lower left side of the main load-bearing chassis (11), and the other group is mounted on the lower right side of the main load-bearing chassis (11); each group of the stabilizing brackets (14) is V-shaped in the unfolded state, and the tip is facing inward; each group of the stabilizing brackets (14) comprises: two mutually hinged reinforcing rods (141), wherein the other end of one of the reinforcing rods (141) is rotatably connected to the vehicle body connecting component (13) on the front side, and the other end of the other reinforcing rod (141) is rotatably connected to the vehicle body connecting component (13) on the rear side, and both of the two reinforcing rods (141) can rotate horizontally around the corresponding vehicle body connecting component (13); a reinforcement member locking device (15); the reinforcement member locking device (15) is arranged between the hinged joint of the intermediate protective bottom plate (111) and the reinforcement rod (141), and is used to lock the reinforcement rod (141) to the lower side of the intermediate protective bottom plate (111); and, An unlocking device (16); the unlocking device (16) is used to control the locking or unlocking of the reinforcement locking device (15).

2. The side-opening children's vehicle chassis according to claim 1, characterized in that: The two groups of stabilizing brackets (14) have a height difference, so as to avoid interference between the two groups of stabilizing brackets (14) when the side-opening baby carriage chassis (1) is folded.

3. The side-opening children's vehicle chassis according to claim 1, characterized in that: A limit block (17) is provided on each of the left and right sides of the intermediate protective bottom plate (111) to cover the rotation point of the front chassis (112) and the rear chassis (113); the limit block (17) is sealed on the upper side and open on the lower side, and is used to prevent the front chassis (112) and the rear chassis (113) from rotating upward relative to the intermediate protective bottom plate (111).

4. The side-opening children's vehicle chassis according to claim 1, characterized in that: A hinge plate (142) is fixedly provided at the hinge of the reinforcing rod (141), and the two reinforcing rods (141) in each group of the stabilizing bracket (14) are hingedly connected via the hinge plate (142); a locking hole (a) is provided on the hinge plate (142); The reinforcement member locking device (15) comprises: Two sets of locking pins (151), which are mounted on the lower side of the intermediate protective bottom plate (111) and pass through the locking holes (a) of the stabilizing bracket (14), and are used to prevent the stabilizing bracket (14) from folding inwards when the side-opening child stroller chassis (1) is in an unfolded state; and a chassis lock (152) mounted on the lower side of the intermediate protective bottom plate (111), and having one end provided with a chassis lock sleeve (1521) for sleeve-engaging the hinged plate (142); the chassis lock (152) is used to lock the stabilizing bracket (14) on the lower side of the intermediate protective bottom plate (111) to prevent the intermediate protective bottom plate (111) from being lifted upward relative to the stabilizing bracket (14); One end of the unlocking device (16) is connected to the chassis lock (152), and the other end is operated by a user, and is used to drive the chassis lock (152) to cover the hinge plate (142) to complete locking, or drive the chassis lock (152) to leave the hinge plate (142) to complete unlocking.

5. The side-opening children's vehicle chassis according to claim 4, characterized in that: A first positioning piece (153) and a second positioning piece (154) are fixedly mounted on the lower side of the hinge of the front chassis (112) and the rear chassis (113) close to the chassis lock (152); a first positioning hole is formed on the first positioning piece (153), and a second positioning hole is formed on the second positioning piece (154); The chassis lock (152) passes through the first positioning hole and can move left and right along the first positioning piece (153); a rotating rod (1522) is arranged at the other end of the chassis lock (152); and a plurality of first oblique rotating blocks (1523) are arranged at intervals around the rotating rod (1522); The unlocking device (16) comprises: a knob (161) located outside the second positioning piece (154); A rotating sleeve rod (162) having one end fixedly connected to the knob (161), the other end passing through the second positioning hole, rotatably sleeved on the rotating rod (1522), and rotatable in the second positioning hole; A plurality of second oblique rotating blocks (163) arranged at intervals around the rotating sleeve rod (162), abutting against the first oblique rotating block (1523) in a locked state, and being offset from the first oblique rotating block (1523) in an unlocked state; a spring stopper (164) disposed on the first oblique rotating block (1523); and a chassis lock spring located between the spring stopper (164) and the first positioning piece (153); By rotating the knob (161), the second oblique rotating block (163) is misaligned with the first oblique rotating block (1523), and the chassis lock (152) moves outward under the action of the chassis lock spring rebound force, so that the chassis lock (152) leaves the hinge plate (142).

6. The side-opening children's vehicle chassis according to claim 5, characterized in that: The chassis lock sleeve (1521) and the first positioning hole are both provided with cutting surfaces (1524).

7. The side-opening children's vehicle chassis according to claim 5, characterized in that: The area of ​​the knob (161) is larger than the area of ​​the second positioning hole; a limiting ring is provided on the rotating sleeve (162) inside the second positioning piece (154) to prevent the knob (161) from sliding off the second positioning piece (154).

8. A side-opening baby stroller, characterized in that: include: A side-opening children's vehicle chassis (1), which is the side-opening children's vehicle chassis (1) according to any one of claims 1 to 7; A chassis crossbar (19) which is transversely mounted between the left and right vehicle body connection components (13) of the front chassis (112) of the side-opening child vehicle chassis (1); A pull rod (21) rotatably mounted on the chassis cross bar (19); Four vertical rods (22) vertically mounted on the upper side of the vehicle body connection assembly (13); a fabric layer (3) enclosed between the four vertical rods (22) and laid on the upper side of the chassis (1) of the side-opening baby stroller; and Four wheels (4) are arranged on the lower side of the vehicle body connection assembly (13).

9. The side-opening baby stroller according to claim 8, characterized in that: The side-opening baby stroller also includes: A folding chair (6), which is located inside the accommodating cavity (b) enclosed by the fabric layer (3) and is detachably mounted on the upper side of the main load-bearing chassis (11); A folding chair locking mechanism (7) is arranged between the folding chair (6) and the main load-bearing chassis (11) and is used to lock the folding chair (6) on the main load-bearing chassis (11) and is capable of unlocking the folding chair (6).

10. The side-opening baby stroller according to claim 8, characterized in that: The wheel (4) has an axle through hole (f) opened along the axis; The side-opening baby stroller also includes: A front frame (23) vertically mounted on the upper sides of the two front body connection assemblies (13); A rear frame (24) vertically mounted on the upper sides of the two rear body connection assemblies (13); A hollow axle (25) is rotatably assembled with the two wheels (4) away from the pull rod (21) via a bearing (26), and a first through groove (g) is provided on the hollow axle (25); A telescopic assembly (81) movably mounted on the hollow axle (25) corresponding to the first through slot (g); A rotating assembly (82) is installed in the hollow axle (25) and is used to rotate around the axis of the hollow axle (25) to push the telescopic assembly (81) and the elastic deceleration assembly (83) to extend toward the inner wall of the shaft through hole (f); An elastic deceleration kit (83) is sleeved outside the telescopic assembly (81) and is used to contact or press against the inner wall of the shaft through hole (f) under the push of the telescopic assembly (81) to achieve a deceleration effect; A rope body, one end of which is fixed and wound around the rotating assembly (82), and the other end of which is connected to the pull rope assembly (85); a pull rope assembly (85), which is mounted on the rear frame (24) and is used to pull the rope body to unwind the rope body to drive the rotating assembly (82) to rotate; and A rope body reset spring (84) is installed in the hollow axle (25) and assembled on the rotating assembly (82) for resetting the rotating assembly (82) and the rope body.

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