Baby stroller

Abstract

The utility model discloses a child stroller which comprises an upper support, a rear support, a front support, a first linkage piece, a second linkage piece and a third linkage piece, the rear side of the front support, the front side of the rear support and the lower side of the upper support are coaxially pivoted or two of the front support, the front side of the rear support and the lower side of the upper support are pivoted, and the third support is pivoted with any one of the two of the front support and the rear support. The front side of the first linkage piece is pivoted with the front bracket, the rear side of the second linkage piece is pivoted with the rear bracket, the upper side of the third linkage piece is pivoted with the upper bracket, and the lower side of the third linkage piece is coaxially pivoted with the front sides of the first linkage piece and the second linkage piece. When the upper support is rotated backwards and downwards, the third linkage part can rotate relative to the upper support and also rotate and move backwards and downwards along with the upper support, so that the lower side of the third linkage part can push the rear side of the first linkage part and the front side of the second linkage part to move and rotate downwards, and the front support and the rear support are pulled to relatively rotate and approach to each other until the front support and the rear support are completely folded. Therefore, linkage of all the assemblies is very smooth, and folding operation is very simple and convenient.

Description

Technical Field

[0001] The utility model relates to the field of infant products, in particular to a child stroller. Background Art

[0002] A stroller can be used to carry infants and young children. The infants and young children sit on the seats of the stroller, and the parents push the stroller forward, thereby reducing the hardship of the parents in holding the children. Therefore, strollers are widely used in families with children.

[0003] In order to make it more convenient to use, strollers are generally designed to be foldable, so that they can be folded when not in use or when they need to be carried, because the folded volume is smaller than the unfolded state. For general operators, the easier it is to fold a stroller, the better. A stroller is generally made up of multiple components. The smoother the linkage of the components during the folding process, the easier the folding operation. On the contrary, if the linkage of the components is not smooth, multiple folding operations are required, making the folding operation very cumbersome. Utility Model Content

[0004] The utility model aims to provide a child stroller, wherein the components of the child stroller can be smoothly linked when folded, thereby making the folding operation simple and convenient.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] Because the utility model adopts the above technical solution, it has the following beneficial effects:

[0007] A child stroller, which can be converted between an expanded state and a folded state, comprises an upper frame, a rear frame, a front frame, a first linkage, a second linkage, and a third linkage; the rear side of the front frame, the front side of the rear frame and the lower side of the upper frame are coaxially pivoted, or two of them are pivoted, and the third is pivoted to any one of the two; the front side of the first linkage is pivoted to the front frame, the rear side of the second linkage is pivoted to the rear frame, the upper side of the third linkage is pivoted to the upper frame, and the lower side is coaxially pivoted to the first linkage and the front side of the second linkage, or two of them are pivoted, and the third is pivoted to any one of the two.

[0008] The stroller also includes a seat backrest, the lower side of which is pivotally connected to the rear bracket, and a backrest locking mechanism is provided between the backrest and the rear bracket to limit the relative rotation of the two. The stroller also includes a backrest unlocking device movably connected to the rear bracket, the upper side of the backrest unlocking device is cooperated with the upper bracket, and the lower side is cooperated with the backrest locking mechanism. When the stroller is folded, the upper bracket rotating backward and downward can drive the backrest unlocking device to move relative to the rear bracket to unlock the backrest locking mechanism in a linked manner.

[0009] 1. All components work smoothly when folding, making the folding operation easy;

[0010] 2. When the child stroller is folded, the upper bracket rotating backward and downward can drive the backrest unlocking device to move relative to the rear bracket and unlock the backrest locking mechanism in a linked manner, so that the seat backrest can be rotated relative to the rear bracket and folded, that is, when the child stroller is folded, the seat backrest can also be unlocked and folded in a linked manner, without the need for additional separate operations to unlock the backrest locking mechanism, thereby making the overall folding operation of the child stroller of the utility model simpler. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a plan view of the first embodiment of the utility model of the child stroller in the unfolded state when the rider is in the rearward position;

[0012] Figure 2 It is a three-dimensional schematic diagram of the first embodiment of the utility model of the child stroller in the unfolded state when the rider is in the rearward position;

[0013] Figure 3 This is a plan view of the first embodiment of the utility model of the child stroller in the process of folding;

[0014] Figure 4 This is a three-dimensional schematic diagram of the first embodiment of the utility model of the child stroller in the process of folding;

[0015] Figure 5 This is a plan view of the first embodiment of the utility model of the child stroller in a folded state;

[0016] Figure 6 It is a plan view of the first embodiment of the utility model of the child stroller in the unfolded state when the rider is in the forward position;

[0017] Figure 7 Based on Figure 2 A magnified diagram of the explosion of part A;

[0018] Figure 8 Based on Figure 2 A magnified diagram of the explosion of part B;

[0019] Figure 9 It is an enlarged schematic diagram of the second driving member of the child stroller according to the first embodiment of the utility model;

[0020] Figure 10 Based on Figure 2 Another exploded and enlarged diagram of part B in the middle;

[0021] Figure 11 It is an exploded and enlarged schematic diagram of the connecting pipe, the first locking mechanism, the first unlocking device, and the rider of the child stroller of the first embodiment of the utility model;

[0022] Figure 12 Exploded enlarged view of the first unlocking device and the third driving member of the stroller according to the first embodiment of the present utility model;

[0023] Figure 13 Stereo schematic diagram of the stroller according to the second embodiment of the present utility model Figure One ;

[0024] Figure 14 Stereo schematic diagram of the stroller according to the second embodiment of the present utility model Figure Two ;

[0025] Figure 15 Schematic diagram of the stroller according to the second embodiment of the present utility model after folding;

[0026] Figure 16 According to Figure 14 Enlarged view of part C;

[0027] Figure 17 According to Figure 16 Exploded enlarged view;

[0028] Figure 18 According to Figure 16 Further exploded enlarged view;

[0029] Figure 19 Enlarged view of the third adapter of the stroller according to the present utility model;

[0030] Figure 20 According to Figure 16 Further exploded enlarged view from another angle;

[0031] Figure 21 Enlarged view of the combination of the connecting member and the first unlocking member of the stroller according to the present utility model;

[0032] Figure 22 Enlarged view of the combination of the connecting member and the first unlocking member of the stroller according to the present utility model from another angle;

[0033] Figure 23 According to Figure 16 Enlarged sectional view in the direction of D-D;

[0034] Figure 24 Enlarged view of the driving member of the stroller according to the present utility model;

[0035] Figure 25 Exploded enlarged view of the lower side of the backrest, the locking member and the connecting member in another embodiment;

[0036] Figure 26 According toFigure 25 An enlarged schematic view from another angle;

[0037] Figure 27 According to Figure 25 An enlarged schematic view of another angle of the locking member in

[0038] Figure 28 An enlarged schematic view of one embodiment of the locking member of the present utility model. Detailed implementation manners

[0039] Figures 1 to 5 As shown, the present utility model discloses a baby stroller which can be switched between an unfolded state and a folded state. The baby stroller includes an upper bracket, a rear bracket 1, a front bracket 3, a first linkage 41, a second linkage 42, and a third linkage 5. The rear side of the front bracket 3, the front side of the rear bracket 1, and the lower side of the upper bracket are coaxially pivotally connected, or two of them are pivotally connected, and the third one is pivotally connected to any one of the two. The front side of the first linkage 41 is pivotally connected to the front bracket 3, the rear side of the second linkage 42 is pivotally connected to the rear bracket 1, the upper side of the third linkage 5 is pivotally connected to the upper bracket, and the lower side is coaxially pivotally connected to the front sides of the first linkage 41 and the second linkage 42, or two of them are pivotally connected, and the third one is pivotally connected to any one of the two.

[0040] When the baby stroller of the present utility model is in the unfolded state, the pivotal connection position of the upper side of the third linkage 5 with the upper bracket is located above the pivotal connection position of the upper bracket with the rear bracket 1 or / and the front bracket 3; the pivotal connection position of the front side of the first linkage 41 with the front bracket 3 is located below the pivotal connection position of the front bracket 3 with the rear bracket 1 or / and the upper bracket; the pivotal connection position of the rear side of the second linkage 42 with the rear bracket 1 is located below the pivotal connection position of the rear bracket 1 with the upper bracket or / and the front bracket 3.

[0041] In this embodiment, the first linkage 41 is arranged as the front seating part of a seat, and the second linkage 42 is the rear seating part of the seat, that is, both the first linkage 41 and the second linkage 42 are part of the seating part of a seat for supporting a child to sit.

[0042] When the baby stroller is arranged as above, when folding the baby stroller, rotate the upper bracket backward and downward, so that while the third linkage 5 rotates relative to the upper bracket, it also rotates and moves backward and downward along with the upper bracket. Thus, the lower side of the third linkage 5 will push the rear side of the first linkage 41 and the front side of the second linkage 42 to move and rotate downward, so that the front side of the first linkage 41 and the rear side of the second linkage 42 can respectively pull the front bracket 3 and the rear bracket 1 to rotate and approach relatively. If the rear bracket 1 is used as the support point and remains stationary, then the front bracket 3 rotates backward. If the front bracket 3 is used as the support point and remains stationary, then the rear bracket 1 rotates forward. In short, the front bracket 3 and the rear bracket 1 approach relatively, and the angle between them becomes smaller (such asFigure 3 , 4 as shown); until the above components can no longer rotate relative to each other. At this time, the stroller is in a folded state (as Figure 5 described). In this way, the above components of the stroller of the present utility model are linked smoothly. As long as the handle 2 is rotated backward and downward, other components can be linked to rotate and move together to the folded state. Therefore, the folding operation of the stroller of the present utility model is very simple. Moreover, after folding, the rear bracket 1, the upper bracket, the front bracket 3, the first linkage 41, the second linkage 42, and the third linkage 5 are relatively close to each other, and the whole is relatively flat and small in volume, so it is convenient to carry and store.

[0043] In this embodiment, the upper bracket includes a handle 23 and a connecting pipe 24. The lower sides of the handle 2 and the connecting pipe 45 are pivotally connected to the rear bracket 1 or / and the front bracket 3. The upper side of the third linkage 5 is pivotally connected to the connecting pipe 24. The connecting pipe 24 is arranged to be connected to the front peripheral side of the seat cloth (not shown in the figure).

[0044] Preferably, the handle 23 can rotate and switch between a forward position (such as the position shown in Figure 1 ) and a backward position (such as the position shown in Figure 13 ). The handle 2 and the connecting pipe 45 are cooperatively arranged, and the cooperation is such that when the handle 23 is in the backward position, the stroller can be folded, and when the stroller is folded, the handle 23 can rotate backward and downward together with the connecting pipe 24.

[0045] Further, the lower side of the connecting pipe 45 is pivotally connected to the front bracket 3 or / and the rear bracket 1 by rotating around a first rotation axis, and the lower side of the handle 2 is pivotally connected to the front bracket 3 or / and the rear bracket 1 by rotating around a second rotation axis. The first rotation axis and the second rotation axis are arranged in parallel, or the first rotation axis and the second rotation axis are on the same straight line, or the first rotation axis and the second rotation axis are the same rotation axis, that is, the lower sides of the connecting pipe 45 and the handle 2 are coaxially pivotally connected to the front bracket 3 or / and the rear bracket 1. In this way, during the folding process of the stroller of the present utility model, the handle 2 and the connecting pipe 45 can rotate at the same angle, so that the folding linkage operation is smoother.

[0046] In this embodiment, the lower sides of the handle 2 and the connecting pipe 45 are coaxially connected to the opposite side of the rear bracket 1, so that the assembly is more convenient, and the handle 2 and the connecting pipe 45 can more ensure the same-angle rotation during folding, which also makes the folding operation of the stroller of the present utility model simpler.

[0047] As shown in the figure, a first locking mechanism for limiting the relative rotation between the lower side of the connecting tube 45 and the rear bracket 1 or the front bracket 3 is provided, and a first unlocking device is provided on the handle 2, and the first unlocking device is cooperated with the first locking mechanism; when the handle 2 is in the rear position, the first unlocking device can be driven to unlock the first locking mechanism, and after the first locking mechanism is unlocked, rotating the handle 2 can drive the connecting tube 45 to rotate in the same direction, thereby driving the child stroller to be folded.

[0048] The first locking mechanism includes a first locking piece 61 connected to the connecting tube 45 so as to be relatively movable up and down, a first elastic piece 62 disposed between the first locking piece 61 and the connecting tube 45, and a first locking groove 11 disposed on the rear bracket 1 or the front bracket 3 and opening upward; when the child stroller is in the unfolded state, under the action of the first elastic piece 62, the first locking piece 61 moves downward and the lower side extends into the first locking groove 11, the first locking mechanism is in the locked state, the connecting tube 45 cannot rotate relative to the rear bracket 1 and / or the front bracket 3, and the child stroller of the utility model cannot be folded.

[0049] The first unlocking device includes a first driving member 63 connected to the rider 2 and movable up and down relatively, a first adapter member 64 connected to the first driving member 63 on one side and movable up and down together with the first driving member 63, and the other side of the first adapter member 64 is connected to the first locking member 61. When the first driving member 63 moves upward, it drives the first adapter member 64 to move upward to unlock the first locking mechanism. In this embodiment, the connecting pipe 45 and the rear bracket 1 can rotate relatively.

[0050] The connecting tube 45 is connected to a second adapter 45 that can cooperate with the first adapter 64. The second adapter 45 can be connected to the rider 2 so as to be relatively movable up and down, and the second adapter 45 is connected to a first locking mechanism. When the first adapter 64 is connected to the second adapter, the first adapter 64 moves upward to drive the second adapter 65 to move upward to unlock the first locking mechanism. The rider 2 can rotate backward and downward to drive the connecting tube 45 to rotate backward and downward through the connection between the first adapter 64 and the second adapter 45, thereby folding the child stroller of the utility model.

[0051] The second adapter 65 is connected to the first locking member 65 and the two can move up and down together relative to the connecting tube 45; therefore, when the first adapter 64 moves upward, it can drive the second adapter 65 to move upward, thereby driving the first locking member 61 to move upward and disengage from the first locking groove 11, the first locking mechanism is unlocked, and the connecting tube 45 can rotate relative to the rear bracket 1 or the front bracket 3.

[0052] A third elastic member 66 for driving the first driving member 63 to move downward is provided between the first driving member 63 and the rider 2, so as to facilitate the automatic reset of the first driving member 63, the first adapter 64, the second adapter 65, and the first locking member 61.

[0053] The upper side of the first locking member 61 is disposed in the connecting pipe 45 so as to be relatively movable up and down. At least a part of the second adapter 65 is located outside the connecting pipe 45. A long hole 451 extending vertically is provided on the side wall of the connecting pipe 45 facing the rear of the vehicle 2 for the connecting portion of the second adapter 65 and the first locking member 61 to move up and down. Similarly, a long hole 21 extending vertically is provided on the side wall of the rider 2 facing the connecting pipe 45 for the other side of the first adapter 64 to extend out and move up and down.

[0054] Correspondingly, the first adapter 64 and the second adapter 65 are detachably connected. When the rider 2 is in the rearward position, the first adapter 64 is connected to the second adapter 65. When the rider 2 is in the forward position, the first adapter 64 is disengaged from the second adapter 65. With such a setting, when the baby stroller of the present utility model is in the unfolded state, the rider 2 can be rotated forward and backward. When the rider 2 is in the rearward position, since the first adapter 64 is connected to the second adapter 65, the rider 2 is positioned at this rearward position, and when the first adapter 64 moves upward, it can drive the second adapter 65 to move upward together, thereby unlocking the first locking mechanism. When folding, when the rider 2 rotates backward, the first adapter 64 can push the connecting pipe 45 to move downward and backward together through the second adapter 65. When the rider 2 is in the forward position, since the first adapter 64 is disengaged from the second adapter 65, the upward movement of the first adapter 64 cannot drive the upward movement of the second adapter 65, so the first locking mechanism cannot be unlocked, and the baby stroller of the present utility model cannot be folded.

[0055] In this embodiment, the part of the second adapter 65 located outside the connecting tube 45 is provided with a contact groove 651 opening forward, and when the rider 2 is in the rearward position, the other side of the first adapter 64 is placed in the contact groove 651. With such a configuration, when the child stroller is in the unfolded state, the rear side of the first adapter 64 is blocked by the rear wall of the contact groove 651, so that the rider 2 is positioned in the rearward position and cannot continue to rotate downward and backward; when the stroller is folded, the first adapter 64 moves upward and presses against the top wall of the contact groove 651, thereby driving the second adapter 65 to move upward, and when the rider 2 rotates backward, it can push the rear wall of the contact groove 651, thereby driving the connecting tube 45 to rotate backward together. However, when the stroller of the present invention is in the unfolded state, when the rider 2 rotates forward from the rearward position, the first adapter 64 can be separated from the second adapter 65 from the opening, so that the forward rotation of the rider 2 will not be blocked. That is, as long as the second locking mechanism is unlocked, the rider 2 can be directly adjusted to the forward position by rotating the rider 2 forward.

[0056] Preferably, the connecting tube 45 is further provided with a contact member 46 extending toward the side of the rider 2, and the unlocking member 76 is further provided with a contact portion 761, and when the rider 2 is in the rearward position, the rear side of the contact portion 761 contacts the contact member 46. With such a configuration, when the child stroller is unfolded, the rider 2 is more stable when in the rearward position.

[0057] In this embodiment, the first driving member 63 is arranged in the handle 2, a mounting member 67 is fixedly connected in the handle 2, and the mounting member 67 is provided with a receiving groove 671 opening toward the connecting tube 45, the first driving member 63 is relatively movably placed in the receiving groove 671, and the third elastic member 66 is arranged between the top of the first driving member 63 and the top wall of the receiving groove 671. Preferably, when the child stroller is in the unfolded state, under the action of the third elastic member 66, the lower end of the first driving member 63 contacts the bottom wall of the receiving groove 671, and such arrangement makes the structure more stable, that is, the child stroller of the utility model is more stable when in the unfolded state, and thus safer to use.

[0058] The driver 2 is provided with a first driving device that can drive the first unlocking device to unlock the first locking mechanism. In this embodiment, the first driving device includes a first driving group movably arranged on the driver 2, and a first connecting member 69 connected to the first driving group on the upper side, and the first connecting member 69 is connected to the first driving member 63 on the lower side. By operating the first driving group, the first driving member 63 can be pulled upward by the first connecting member 69.

[0059] Preferably, a first avoidance hole 672 is provided on the top wall of the mounting member 67 , and the lower end of the first connecting member 69 passes downward through the first avoidance hole 672 and is connected to the first driving member 63 .

[0060] In this embodiment, the baby stroller includes a push handle 68 pivotally connected to the upper side of the stroller body 2 at the lower side. The push handle 68 is set as the first driving group, and the push handle is arranged such that when the push handle 68 is rotated downward, the first connecting member 69 can be pulled upward, thereby pulling the first driving member 63 upward. With such a setting, when the baby stroller is folded, the push handle 68 is also folded at the same time, thereby reducing the overall height of the folded baby stroller of the present utility model, and further reducing the overall volume of the folded baby stroller.

[0061] The specific structure and its operating principle of the rotation of the push handle 68 driving the first connecting member 69 upward can adopt any known and feasible technology. Since it is not the focus of the present utility model, it will not be elaborated here.

[0062] In other embodiments, the first driving group can also be arranged on any other known and feasible structure on the stroller body, as long as the first unlocking device can be driven by operating the first driving group to unlock the first locking mechanism. For example, the first driving group can also be set as a component that is connected to the stroller body 2 and can move up and down relatively. When this component is moved upward, the first connecting member can be pulled upward, thereby pulling the first driving member upward to unlock the first locking mechanism. Also, for example, the first driving group can be set as a component that is rotatably connected to the stroller body 2 relatively. When this component is rotated relative to the stroller body, the first connecting member can be pulled upward, thereby pulling the first driving member upward to unlock the first locking mechanism. Still, for example, the first driving group can be set as a button that is connected to the stroller body 2 and can move relatively. When this component is pressed, the first connecting member can be pulled upward, thereby pulling the first driving member upward to unlock the first locking mechanism. Here, they are not listed one by one.

[0063] In another embodiment, the first driving device may not be provided, and the first driving member 63 is arranged such that a part thereof extends out of the stroller body (not shown in the figure). By directly moving upward the part of the first driving member 63 that extends out of the stroller body, the first driving member 63 can be moved upward, thereby unlocking the first locking mechanism.

[0064] Regardless of which of the above methods is used, since the first driving member is arranged on the stroller body, the first locking mechanism can be unlocked by directly moving the first driving member upward. After unlocking, the stroller body can be rotated backward and downward along the trend to fold the baby stroller of the present utility model. In addition, the first driving device that can drive the first unlocking device to unlock the first locking mechanism is also arranged on the stroller body. After unlocking, the stroller body can still be rotated backward and downward along the trend to fold the baby stroller of the present utility model, thereby making the folding operation of the baby stroller of the present utility model more convenient.

[0065] A second locking mechanism for limiting the relative rotation between the lower side of the handlebar 2 and the rear support 1 or the front support 3 is provided. With such a configuration, when the stroller is in the unfolded state, the first locking device and the second locking mechanism are provided so that both the connecting tube 45 and the handlebar are locked. To fold the stroller of the utility model, both the first locking device and the second locking mechanism must be unlocked, and the handlebar 2 and the connecting tube 45 can be rotated backward and downward, that is, the stroller of the utility model can be folded, thereby making the stroller of the utility model more stable in the unfolded state.

[0066] A second unlocking device for unlocking the second locking mechanism is provided between the rider 2 and the second locking mechanism. In this embodiment, preferably, the second unlocking device is connected to the first unlocking device, and the two are configured so that when the first unlocking device is driven to unlock the first locking mechanism, the second unlocking device can be linked to unlock the second locking mechanism; when the second unlocking device is driven to unlock the second locking mechanism, the first unlocking device is not linked to unlock the first locking mechanism. Thus, when the stroller is in the unfolded state, after the second unlocking device is driven to unlock the second locking mechanism, the rider can rotate and switch between the forward position and the rearward position; when the rider is in the rearward position, the second locking mechanism can be linked to unlock when the first locking mechanism is unlocked, thereby making the folding operation of the stroller of the utility model easier.

[0067] The second unlocking device includes a third driving member 74 that can be relatively moved up and down on the driver 2, a second connecting member 75 connected to the third driving member 74 at the upper end, and a second driving member 73 connected to the lower end of the second connecting member 75; the second driving member 73 is arranged in cooperation with the second locking mechanism; moving the third driving member 74 upward can link the second connecting member 75 to drive the second driving member 73 to drive the second locking mechanism to unlock.

[0068] The connecting tube 45 and the lower side of the rider 2 are both pivotally connected to the rear bracket 1, and the first locking mechanism is arranged between the connecting tube 45 and the rear bracket 1, that is, the first locking groove 11 is arranged on the rear bracket; the second locking mechanism is arranged between the rider 2 and the opposite side of the rear bracket 1, and the lower side of the connecting tube 45 is pivotally connected to the side of the rear bracket 1 away from the rider. In this embodiment, the second locking mechanism includes a first tooth groove 22 and a second tooth groove 12 respectively arranged on the opposite side of the rider 2 and the rear bracket 1, a first gear 71 arranged in the first tooth groove 22 and the second tooth groove 12 so as to be relatively movable left and right, and a second elastic member arranged between the bottom wall of the second tooth groove 12 and the first gear 71; under the action of the second elastic member, the first gear 71 is meshed with the first tooth groove 22 and the second tooth groove 12 at the same time, and the second locking mechanism is in a locked state, and the rider 2 cannot rotate relative to the rear bracket 1.

[0069] The second driving member 73 is rotatable relative to and movable left and right relative to the bottom wall of the first tooth groove 22 and is disposed between the first gear 71; a mating driving part and driven part are respectively disposed on the opposite sides of the bottom wall of the first tooth groove 22 and the second driving member 73; when the third driving member 74 is moved upward, the second driving member 73 can be pulled to rotate through the second connecting member 75. When the second driving member 73 rotates, through the cooperation of the driving part and the driven part, the second driving member 73 moves in the direction of the first gear 71 while rotating, thereby pushing the first gear 71 in the direction of the second tooth groove 12. When the first gear 71 disengages from the first tooth groove 22 and only meshes with the second tooth groove 12, the second locking mechanism is unlocked, and the rider 2 can rotate relative to the rear bracket 1. When the rider rotates to the forward position or the backward position, the operation on the second unlocking device is released, the third driving member 74 resets, and the first gear returns to the state of meshing with both the first tooth groove and the second tooth groove at the same time, and the second locking mechanism locks, thereby locking the rider 2 in the forward position or the backward position after the reversal.

[0070] In this embodiment, the driving part and the driven part are respectively a boss 221 and a groove 731 disposed on the opposite sides of the bottom wall of the first tooth groove 22 and the second driving member 73, and a mating driving inclined surface 2211 and a driven inclined surface 7311 are respectively disposed on the boss 221 and in the groove 731. Thus, when the second driving member 73 rotates, through the cooperation of the driving inclined surface 2211 and the driven inclined surface 7311, the second driving member 73 moves in the direction of the first gear 71 while rotating and pushes the first gear. When the third driving member 74 is released, under the action of the second elastic member, the first gear 71 and the second driving member 73 move in the direction of the first tooth groove 22. Through the cooperation of the driving inclined surface 2211 and the driven inclined surface 7311, the second driving member 73 rotates in the reverse direction, thereby pulling the third driving member 74 downward through the third connecting member 77. The second driving member 73 and the third driving member 74 reset, and the first gear meshes with both the first tooth groove and the second tooth groove again at the same time, thereby locking the rider at this angular position.

[0071] A second driving device for driving the second unlocking device to unlock the second locking mechanism is further disposed on the rider 2. In this embodiment, the second driving device includes a second driving group 76 movably connected to the rider 2 and a third connecting member 77 having an upper end connected to the second driving group 76. The lower end of the third connecting member 77 is connected to the third driving member 74; driving the second driving group 76 to move can pull the third driving member 74 upward through the third connecting member 77, thereby unlocking the second locking mechanism.

[0072] In this embodiment, the second driving group 76 is configured as an unlocking member connected to the driver 2 so as to be relatively movable upward and downward. By moving the unlocking member 76 upward, the third driving member 74 can be pulled upward through the third connecting member 77. In other embodiments, the second driving group 76 can also be any other known and feasible technology, which is not the focus of the present invention and will not be described in detail here.

[0073] In this embodiment, the third driving member 74 is disposed inside the rider's hand 2. In other embodiments, the third driving member 74 may be partially disposed inside the rider's hand and partially extended outside the rider's hand 2, so that the portion of the second driving member 74 exposed outside the rider's hand can be directly moved upward to move the entire third driving member 74 upward, thereby unlocking the second locking mechanism.

[0074] In this embodiment, the third driving member 74 is connected to the first driving member 63 so as to be movable up and down relatively, and the two are configured so that the third driving member 74 can move upward to drive the first driving member 63 to move upward together; when the third driving member 74 moves upward, the first driving member 63 is not driven to move upward.

[0075] In this embodiment, the third driving member 74 is provided with a long hole 741 extending up and down, and part of the first driving member 63 or / and the first adapter 64 can relatively move up and down through the long hole 741. When the second locking mechanism is in the locked state, under the action of the second elastic member, part of the first driving member 63 or / and the first adapter 64 contacts the top wall of the long hole 741 of the third driving member 74. In this way, no matter whether the rider 2 is in the rearward position or the forward position, when the third driving member 74 moves upward, the first driving member 63 and the first adapter 64 will not be driven to move upward, that is, when the second unlocking device is driven to unlock the second locking mechanism, the first unlocking device will not be linked to unlock the first locking device; but when the first driving member 63 moves upward, the third driving member 74 will be driven to move upward together, that is, when the first unlocking device is driven to unlock the first locking device, it can be linked to the second unlocking device to unlock the second locking mechanism. With such arrangement, when the stroller is in the unfolded state, the second locking mechanism can be unlocked separately without affecting the first unlocking device, and then the rider 2 can be rotated forward and backward to realize the forward and backward direction reversing function of the rider 2, thereby avoiding the accidental folding of the stroller of the utility model due to the rider's direction reversing operation, that is, ensuring the safety of the stroller of the utility model when in use; and when the rider 2 is in the rearward position, the second locking mechanism can be unlocked by unlocking the first locking mechanism, that is, the first locking device and the second locking mechanism can be unlocked at one time, without performing different operations to unlock, thereby making the unlocking operation of the stroller of the utility model simpler.

[0076] On the side of the first driving member 63 facing the connecting pipe 45, there is a protruding mounting boss 634. The mounting boss 634 is provided with a hole 6341. One side of the first adapter 64 is inserted into the hole 6341 of the mounting boss 634, thereby realizing the connection between the first adapter 64 and the first driving member 63. The mounting boss 634 passes through the long hole 741 and contacts the top wall of the long hole 741 of the third driving member 74. In this way, the structure is more stable. In other embodiments, it may also be that the vertical portion 631 is provided with a concave hole, and one end of the first adapter 64 extends into the concave hole. Correspondingly, the first adapter 64 contacts the top wall of the long hole 741 of the third driving member 74.

[0077] In this embodiment, the first driving member 63 includes a vertical portion 631, an upper wall portion 632 and a lower wall portion 633 respectively connected to the upper and lower ends of the vertical portion 631. The third driving member 74 is disposed between the upper wall portion 632 and the lower wall portion 633 so as to be movable relatively up and down. The mounting boss 634 is disposed on the vertical portion 631. Under the action of the second elastic member, the lower end of the third driving member 74 contacts the lower wall portion 633. With such a setting, the connection between the third driving member 74 and the first driving member 63 and the mounting member 67 is more stable, so that the baby stroller is more stable in the unfolded state and safer to use. The top wall of the mounting member 67 is also provided with a second avoidance hole 674, and the first avoidance hole 672 and the second avoidance hole 674 are spaced apart. The upper wall portion 632 of the first driving member 63 is also provided with a corresponding third avoidance hole 630. The lower end of the third connecting member 77 passes downward through the first avoidance hole 672 and the third avoidance hole 630 and then is connected to the third driving member 74. With such a setting, the first connecting member 69 and the third connecting member 77 can be made not to interfere with each other, thereby further ensuring that when the second driving device is operated, the first unlocking device will not be driven to act.

[0078] When folding the baby stroller of the present invention with the rider 2 in the rearward position, specifically, drive the first driving group, pull the first driving member 63 upward by the first connecting member 69, and then pull the third driving member 74 and the first adapter 64 upward together, thereby driving the first locking member 61 upward, so that the lower side of the first locking member 61 is disengaged from the engagement with the first locking groove 11, and the first locking mechanism is unlocked. As described above, the upward movement of the third driving member 74 can cause the second driving member 73 to move toward the first gear 71 to unlock the second locking mechanism. At this time, rotate the rider 2 backward and downward, and drive the connecting pipe 45 to rotate backward and downward together by the pushing of the first adapter against the wall of the contact groove 651 of the second adapter, thereby folding the baby stroller of the present invention.

[0079] The first connecting member 69, the second connecting member 75, the third connecting member 77, the fourth connecting member 36, and the fifth connecting member 18 can all be set as steel wires or similar structures.

[0080] In other embodiments, the rider 2 may not be configured to rotate and reverse between the forward position and the backward position, but may be fixedly connected to the connecting pipe 45 relatively, so that the rider 2 and the connecting pipe 45 can rotate in the same direction together; or, the upper bracket may not include the connecting pipe, only the rider is provided, the upper side of the third linkage 5 is pivotally connected to the rider, and the rider is not configured to be able to rotate and reverse between the forward position and the backward position.

[0081] A front wheel 32 is provided at the lower front part of the front bracket 3, and a rear wheel 13 is provided at the lower rear part of the rear bracket.

[0082] The baby stroller of the present utility model further includes an armrest 9, and the rear side of the armrest 9 is connected to the upper side of the rear bracket 1. And the armrest 9 can be configured to be detachably connected or relatively rotatably connected to the rear bracket 1. When it is a detachable connection, the armrest can be removed after the baby stroller is folded; when it is a relatively rotatable connection, when the baby stroller is folded, the armrest can be rotated to be close to the front bracket 3 or the rear bracket 1. With the above settings, the overall height of the baby stroller of the present utility model after folding can be reduced, that is, the overall volume can be reduced. The rear side of the armrest 9 can also be configured to be fixedly connected to the rear bracket 1.

[0083] Such as Figures 13 to 15 This is the second embodiment of the baby stroller of the present utility model. In this embodiment, the first linkage 41-1 is configured to be the seating part of the seat, that is, the first linkage 41 is the seating part of the seat. Whether the first linkage 41-1 can be configured to be the seating part of a seat, or the first linkage 41 and the second linkage 42 together form the seating part of a seat, when the baby stroller of the present utility model is folded, they can all be folded together in linkage, that is, the seating part of the seat can be folded together in linkage, so that the overall folding operation of the baby stroller of the present utility model is simpler and more convenient.

[0084] The baby stroller further includes a seat backrest 91, the lower side of the backrest 91 is pivotally connected to the rear bracket 1, and a backrest locking mechanism for restricting relative rotation between the backrest 91 and the rear bracket 1 is provided therebetween; the baby stroller further includes a backrest unlocking device movably connected to the rear bracket 1, the upper side of the backrest unlocking device is cooperatively arranged with the upper bracket, and the lower side is cooperatively arranged with the backrest locking mechanism; when the baby stroller is folded, the upper bracket rotating backward and downward can drive the backrest unlocking device to move relative to the rear bracket 1 to unlock the backrest locking mechanism in linkage. In this way, the seat backrest 91 can rotate relative to the rear bracket to be folded, that is, the seat backrest 91 can also be unlocked and folded in linkage when the baby stroller is folded, without the need for an additional separate operation to unlock the backrest locking mechanism, thereby making the overall folding operation of the baby stroller of the present utility model more convenient.

[0085] In this embodiment, the upper side of the backrest unlocking device is cooperatively arranged with the upper support connecting pipe 45.

[0086] In this embodiment, preferably, the rear side of the first linkage 41-1 is coaxially pivotally connected to the lower side of the backrest 91 at the rear support 1. Such an arrangement makes the overall assembly simpler.

[0087] The seat fabric is also connected to the seating part, and the rear side of the fabric is connected to the backrest 91. The connection manners of the fabric with the connecting pipe, the seating part, and the backrest 91 of the seat can be any well-known and feasible structures. Since it is not the inventive point of the present utility model, it will not be elaborated herein.

[0088] In this embodiment, the backrest unlocking device includes a first unlocking member 14 that is connected to the rear support 1 so as to be relatively movable up and down. The upper side of the first unlocking member 14 is cooperatively arranged with the upper support, and the lower side is cooperatively arranged with the backrest locking mechanism. When the upper support rotates backward and downward, it can drive the first unlocking member 14 to move downward to unlock the backrest locking mechanism.

[0089] A driving groove 452 is arranged on one side of the upper support facing the first unlocking member 14. The upper side of the first unlocking member 14 extends into the driving groove 452. At least one of the upper end surface of the first unlocking member 14 and the groove wall of the driving groove 452 facing the first unlocking member 14 is provided with an inclined surface. In this embodiment, preferably, the upper end surface of the first unlocking member 14 is provided with a first inclined surface 141. Correspondingly, the groove wall of the driving groove 452 facing the first inclined surface 141 is set as a second inclined surface 453 that cooperates with the first inclined surface. When the baby stroller of the present utility model is in the unfolded state, under the action of the first elastic member 140, the upper side of the first unlocking member 14 extends into the driving groove 452, and the first inclined surface 141 on the upper side of the first unlocking member 14 contacts the second inclined surface 453 of the driving groove 452. When the upper support rotates backward and downward, through the cooperation of the first inclined surface 141 and the second inclined surface 453, the first unlocking member 14 can be driven to move downward relative to the rear support 1. When only one of them is provided with an inclined surface, that is, only the first inclined surface or the second inclined surface is provided, when the upper support rotates backward and downward, the first unlocking member 14 can also be driven to move downward relative to the rear support 1.

[0090] A first elastic member 140 for driving the first unlocking member to move upward is arranged between the first unlocking member 14 and the rear support 1 (such as Figure 23As shown). Thus, when the driving groove 452 is aligned with the upper side of the first unlocking member 14 moving member, under the action of the first elastic member 140, the first unlocking member 14 moving member can move relatively upward and the upper side extends into the driving groove 452. With such a setting, when converting the child stroller in the folded state to the unfolded state, under the action of the first elastic member 140, the first unlocking member 14 moving member can automatically reset, thus facilitating the subsequent folding operation.

[0091] In this embodiment, the first elastic member 140 is also set as a compression spring. A first long hole 142 extending vertically is provided in the first unlocking member 14. The rear bracket 1 is convexly provided with a abutting member 100. The abutting member 100 extends into the first long hole 142. The upper side of the first elastic member 140 is connected to the top wall of the first long hole 142, and the lower side is connected to the abutting member 100. To prevent the first elastic member 140 from being displaced easily, corresponding spring seats 1421 and 111 are respectively provided on the top wall of the first long hole 142 and the abutting member 100. The upper side of the first elastic member 140 is sleeved outside the spring seat 1421 on the top wall of the first long hole, and the lower side is sleeved outside the spring seat 111 of the abutting member 100. When folding, the downward movement of the first unlocking member 14 moving member will compress the first elastic member 140.

[0092] In other embodiments, the first elastic member 140 can also be set as other known and feasible elastic members. When set as other elastic members, the relevant settings will also change correspondingly.

[0093] A first connecting seat 16 is provided on the rear bracket 1. A second connecting seat 911 is provided at the lower end of the backrest 91. The first connecting seat 16 and the second connecting seat 911 are pivotally connected, thus achieving the purpose of pivotally connecting the backrest 91 and the rear bracket 1.

[0094] A first receiving groove 161 is provided on one side of the first connecting seat 16 facing the second connecting seat 911. The lower side of the first unlocking member 14 extends into the first receiving groove 161 and is cooperatively provided with the backrest locking mechanism.

[0095] In this embodiment, preferably, a second long hole 144 is provided on the lower side of the first unlocking member 14. A connecting shaft (not shown in the figure) passes through the first connecting seat 16, the second long hole 144, and the second connecting seat 911 to connect the three. Further, a third long hole 145 is also provided on the upper side of the first unlocking member 14. Another connecting shaft passes through the third long hole 145 and the rear bracket 1 to connect the first unlocking member 14 and the rear bracket 1. In this way, through the connection provided in two places, it can be ensured that the first unlocking member 14 moves smoothly up and down and is not easily displaced. In other embodiments, the first unlocking member 14 can also be connected to the rear bracket through a connecting shaft at any other suitable position to be relatively movable up and down.

[0096] A connecting member 160 is fixedly connected to the rear bracket 1. The first connecting seat 16 is provided on the lower side of the connecting member 160. A receiving cavity is provided between the connecting member 160 and the rear bracket 1. The moving member of the first unlocking member 14 can move up and down in the receiving cavity, and the upper side of the moving member of the first unlocking member 14 extends out of the upper side of the connecting member 160 to cooperate with the upper bracket. With the connecting member 160 arranged as above, the first unlocking member 14 can be covered to prevent it from being affected by external objects and affecting the linkage unlocking of the backrest locking mechanism. During connection, in addition to connecting the first unlocking member 14 and the rear bracket 1, the connecting shaft also connects the connecting member 160.

[0097] The abutting member 100 may also extend from the inner wall of the connecting member 160 toward the side of the rear bracket 1.

[0098] In this embodiment, the backrest locking mechanism includes a locking member 17 that is connected to the second connecting seat 911 so as to be movable relatively left and right on one side. A first locking portion 162 and a second locking portion 171 that cooperate with each other are provided between the first connecting seat 16 and the other side of the locking member 17. When the first locking portion 162 and the second locking portion 171 cooperate with each other, the locking member 17 and the first connecting seat 16 cannot rotate relative to each other, the backrest 91 cannot rotate relative to the rear bracket 1, and the backrest locking mechanism is in a locked state. The cooperation between the locking member 17 and the first unlocking member 14 is set such that when the first unlocking member 14 moves downward, it can drive the locking member 17 to move in a direction away from the rear bracket 1, so that the first locking portion 162 and the second locking portion 171 are disengaged from each other, and the backrest locking mechanism is unlocked, and the backrest 91 can rotate relative to the rear bracket 1.

[0099] The backrest locking mechanism further includes a second elastic member 910 (as shown) provided between the locking member 17 and the second connecting seat 911 and capable of driving the locking member 17 to move toward the rear bracket, so that under the action of the second elastic member 910, the locking member 17 can automatically move toward the rear bracket to make the first locking portion 162 and the second locking portion 171 cooperate with each other. Figure 23 shown) so that under the action of the second elastic member 910, the locking member 17 can automatically move toward the rear bracket to make the first locking portion 162 and the second locking portion 171 cooperate with each other.

[0100] Preferably, a second receiving groove 912 is provided on the side of the second connecting seat 911 facing the first connecting seat 16. One side of the locking member 17 is placed in the second receiving groove 912 so as to be movable relatively left and right.

[0101] The second elastic member 910 may also be set as a compression spring. It is located in the second receiving groove 912, and one side abuts against the wall of the second receiving groove 912, and the other side abuts against the first unlocking member 14. Under the action of the second elastic member 910, the locking member 17 moves in a direction toward the rear bracket 1.

[0102] In this embodiment, the first unlocking member 14 is arranged in cooperation with the back-rest locking mechanism through the third adapter 15, and the third adapter 15 can be connected to the rear bracket 1 so as to be relatively movable left and right; and the third adapter 15 is arranged in cooperation with the lower side of the first unlocking member 14 on one side facing the rear bracket, and is arranged in cooperation with the locking member 17 on the other side; the first unlocking member 14 moving downward can drive the third adapter 15 to move in the direction toward the back-rest, and when the third adapter 15 moves in the direction toward the back-rest, it can push the locking member 17 to move away from one side of the rear bracket 1, thereby unlocking the back-rest locking mechanism.

[0103] The third adapter 15 is provided with a third inclined surface 151 on the side facing the rear bracket 1, and the first unlocking member 14 is provided with a matching fourth inclined surface 143 on the side facing the third inclined surface 151. When the first unlocking member 14 moves downward relative to the rear bracket 1, the third adapter 15 is driven to move in the direction of the backrest (i.e., in the direction of the backrest 91) through the cooperation between the third inclined surface 151 and the fourth inclined surface 143.

[0104] The third adapter 15 is at least partially disposed in the first receiving groove 161 so as to be relatively movable leftward and rightward, and the side of the third adapter 15 facing away from the rear bracket 1 is matched with the locking member. When the third adapter 15 moves toward the backrest, it can push the locking member 17 to move away from the side of the rear bracket 1. In other words, it can push the locking member 17 to move into the second receiving groove 912, thereby unlocking the backrest locking mechanism. In this embodiment, the side of the third adapter 15 facing away from the rear bracket 1 is connected to the locking member.

[0105] In this embodiment, the locking member 17 is provided with a third receiving groove 173 on the side facing the rear bracket 1, and the side of the third adapter 15 facing away from the rear bracket 1 extends into the third receiving groove 173 and abuts against the side opposite to the third receiving groove 173. Therefore, as long as the third adapter 15 moves toward the side where the back-to-back 91 is located, the locking member 17 can be pushed to move toward the second receiving groove 912, so that the back-to-back locking mechanism is unlocked faster. That is, the end face of the locking member 17 facing the rear bracket 1 is provided with a circle of second end face ratchet teeth 511, and the third receiving groove is provided in the middle.

[0106] In other embodiments, the third adapter 15 may be completely located in the first receiving groove, and an extension portion (not shown) may be extended from the middle of the unlocking member 51 toward the rear bracket, and the extension portion may extend into the first receiving groove and be connected to the third adapter 15, and the connection may be abutting connection, fixed connection, etc. In the above, the third adapter and the locking member 17 are provided as two separate components.

[0107] In this embodiment, the first locking portion 162 and the second locking portion 171 are the first end face ratchet teeth 162 and the second end face ratchet teeth 511 that can mesh with each other and are respectively arranged on the opposite sides of the first connecting seat 16 and the locking member 17, that is, the second end face ratchet teeth 511 are arranged on the side of the locking member 17 facing the rear bracket 1, and the first end face ratchet teeth 162 are arranged on the side of the first connecting seat 16 facing the second connecting seat 911, and the first end face ratchet teeth mesh with the second end face ratchet teeth. Under the action of the second elastic member 910, the first end face ratchet teeth 162 of the first connecting seat 16 mesh with the second end face ratchet teeth 511 of the locking member 17, the backrest 91 cannot rotate relative to the rear bracket 1, and the backrest locking mechanism is in a locked state.

[0108] When the stroller of the utility model is folded, the upper bracket is rotated backward and downward, and the second inclined surface 453 of the driving groove 452 pushes the first inclined surface 141, thereby driving the first unlocking member 14 to move downward relative to the rear bracket 1, so that the fourth inclined surface 143 on the lower side of the first unlocking member 14 pushes the third inclined surface 151 of the third adapter 15, and then pushes the third adapter 15 to move toward the side of the backrest 91, and the third adapter 15 moved in this way pushes the locking member 17 to move into the second receiving groove 912, so that the second end face ratchet teeth 513 of the locking member 17 are disengaged from the second end face ratchet teeth 162 of the first connecting seat 16, that is, the first locking portion 162 is disengaged from the second locking portion 171, and the backrest locking mechanism is unlocked, and the backrest 91 can rotate relative to the rear bracket 1. Under the action of gravity, the backrest 91 will directly rotate downward until it can no longer rotate, and at this time the backrest 91 has also rotated to the folded state. When the upper bracket cannot rotate further downward, it means that the upper bracket has also rotated to the folded state (such as Figure 15 That is, when the child stroller is folded, the backrest locking mechanism of the seat backrest 91 can be unlocked in conjunction with each other, and there is no need to unlock the backrest locking mechanism separately to fold the backrest 91, so that the folding operation of the child stroller of the utility model is very simple.

[0109] In this embodiment, the third adapter 15 is further configured to be rotatable relative to the first connector 16, and a first mating portion and a second mating portion are respectively disposed on opposite sides of the third adapter 15 and the locking member 17. By rotating the third adapter 15, under the cooperation of the first mating portion and the second mating portion, the locking member 17 is driven to move towards the backrest, that is, to move into the second receiving groove 912, so that the first end face ratchet teeth are disengaged from the second end face ratchet teeth, that is, the first locking portion 162 is disengaged from the second locking portion 171, and the backrest locking mechanism is unlocked, and the backrest 91 can rotate relative to the rear bracket 1. Specifically, the first mating portion and the second mating portion are respectively disposed on opposite sides of the third adapter 15 and the third receiving groove 173. A driving groove 150 is formed on a side of the third adapter 15 facing the bottom wall of the third receiving groove 173, and a fifth inclined surface 1501 is formed on a side wall of the driving groove 150; a driving block 170 extends from the bottom wall of the third receiving groove 173 towards the third adapter 15, and the driving block 170 extends into the driving groove 150, and a corresponding sixth inclined surface (not shown in the figure) is formed on a side surface of the driving block 170 facing the fifth inclined surface 1501; the driving groove 150 and the driving block 170 are respectively configured as the first mating portion and the second mating portion.

[0110] In other embodiments, it may also be that the third receiving groove is not provided on a side of the locking member 17 facing the rear bracket 1, but the first mating portion and the second mating portion are respectively provided on opposite end faces of the locking member 17 and the third adapter.

[0111] A third unlocking device for unlocking the backrest locking mechanism is further provided on the backrest 91. The third unlocking device includes an operating member 32 movably connected to the backrest 91 and a linkage structure (not shown in the figure) connected to the upper side of the operating member 32. The lower side of the linkage structure is connected to the third adapter 15. By driving the operating member 32 to move relative to the backrest 91, the third adapter 15 can be rotated by pulling with a steel wire. The linkage structure can be a steel wire.

[0112] Specifically, in this embodiment, the lower side of the steel wire penetrates into the second receiving groove 912 and then into the third receiving groove 173 to be connected to the third adapter 15. A through hole 174 is formed in the locking member 17 for the lower side of the steel wire to pass through. The operating member 32 is rotatably connected to the backrest 91, and the operating member 32 can also be movably connected to the backrest 91 in other forms, as long as it can rotate the third adapter 15 by pulling with a steel wire when it moves relative to the backrest 91.

[0113] When the stroller is in the unfolded state and the backrest 91 needs to be adjusted in angle, rotate the operating member 32, thereby pulling the upper side of the steel wire upward. In this way, the lower side of the steel wire pulls the third adapter 15 to rotate. The fifth inclined surface 1501 on the third adapter 15 interacts with the sixth inclined surface on the mating member of the locking member 17, and can also drive the locking member 17 to move into the second receiving groove 912, so that the second end surface ratchet teeth of the locking member 17 are disengaged from the first end surface ratchet teeth of the connecting member 160, thereby unlocking the backrest locking mechanism, and the backrest 91 can rotate relative to the rear bracket 1. At this time, the backrest 91 can be rotated forward and backward. When it is rotated to the desired angle, release the operating member 32. Under the action of the first elastic member 140, the locking member 17 moves in the direction towards the rear bracket 1, and the second end surface ratchet teeth of the locking member 17 are engaged with the first end surface ratchet teeth of the connecting member 160 again, thereby locking the backrest 91 at this angular position. And this operation of adjusting the backrest angle alone will not affect the first unlocking member 14.

[0114] Preferably, when the first locking portion and the second locking portion are respectively provided as the first end surface ratchet teeth 162 and the second end surface ratchet teeth 511, the first end surface ratchet teeth 162 and the second end surface ratchet teeth 511 are arranged such that when they are engaged, the backrest 91 can be rotated forward without driving the third unlocking device to unlock the backrest locking mechanism, while when the backrest is rotated backward, it is necessary to first drive the third unlocking device to unlock the backrest locking mechanism. In this way, the present utility model makes full use of the characteristics of the end surface ratchet teeth, making the operation of adjusting the backrest angle more convenient.

[0115] Preferably, a complete circle of inclined surface is provided on the outer circle of the side of the third adapter 15 facing the rear bracket 1, and this complete circle of inclined surface is set as the third inclined surface 151. Thus, no matter what angular position the backrest 91 is adjusted to, the surface in contact with the third inclined surface 151 on the lower side of the first unlocking member 14 is an inclined surface, that is, no matter what angular position the backrest 91 is rotated to, when the stroller is folded, the third unlocking device can be linked to unlock the backrest locking mechanism.

[0116] In other embodiments, it may also be that the third adapter can only move relative to the rear bracket, that is, there is no need to provide the driving groove 150 and the driving block 170. When the operating member 32 is driven to move relative to the backrest 91, the third adapter 15 can be pulled by the steel wire to move in the direction away from the rear bracket, thereby driving the locking member to move together to unlock the backrest locking mechanism. The steel wire is also directly connected to the locking member, and the steel wire directly pulls the locking member to move in the direction towards the backrest to unlock the backrest locking mechanism.

[0117] Regardless of whether the above is to drive the third adapter to rotate by a steel wire or directly drive the third adapter / locking member to move, the specific structure of the operating member 32, its connection modes with the backrest 91 and the steel wire, and the connection between the lower side of the steel wire and the third adapter 15 / locking member can all be any publicly known and feasible structures, and are not the inventive points of the present utility model, so they will not be elaborated herein.

[0118] Preferably, a first limiting member 14 protrudes upward from the rear bracket 1, and a second limiting member 913 protrudes outward from the outer side of the second connecting seat 911 toward the rear bracket 1. When the backrest 91 rotates forward to a set angle, the first limiting member 14 abuts against the second limiting member 913, so that the backrest 91 cannot rotate forward any further. With such a setting, the backrest 91 of the seat will not rotate forward beyond the set angle position, thus avoiding the accidental operation when adjusting the angle of the backrest 91 and pressing down the child sitting on the seat, and further ensuring the safety of the child. The set angle can be set according to relevant safety regulations in combination with special requirements.

[0119] Preferably, a gear tooth 175 is provided on the outer ring of the locking member 17. Correspondingly, the second receiving groove 912 is provided as a tooth groove meshing with the gear tooth. With such a setting, when the third adapter 15 is driven to rotate, the locking member 17 can only move but not rotate, thereby ensuring that the locking member 17 can move to disengage the first end face ratchet teeth from the second end face ratchet teeth, that is, ensuring that the backrest locking mechanism can be unlocked, and when the backrest rotates, the locking member can rotate together.

[0120] In this embodiment, the gear tooth 175 is provided on the outer ring of the locking member 17, and the second locking portion 171, that is, the second end face ratchet teeth, is provided at the end of the locking member 17 on the side facing the rear bracket 1 (as Figure 7 shown).

[0121] At least one limiting groove 153 is provided on the outer ring of the side of the third adapter 15 facing the backrest 91 (as Figure 19 shown). Correspondingly, a third limiting member 176 is provided in the third receiving groove 173 (as Figure 20 shown), and the third limiting member 176 extends into the limiting groove 153 and can rotate relative to the limiting groove 153. The limiting groove 153 and the third limiting member 176 are arranged such that during the rotation of the third adapter 15, the fifth inclined surface 1501 and the sixth inclined surface always maintain at least partial contact with each other. With such a setting, it can be avoided that the third adapter 15 rotates without limit and causes the driving block 170 to completely disengage from the driving groove 150, that is, it can be ensured that the fifth inclined surface 1501 and the sixth inclined surface will not completely disengage from contact. Thus, after the operating member 32 is released, under the action of the second elastic member 910, the third adapter 15 can also be reset.

[0122] Another implementation manner based on the above embodiments (not shown in the figure) may also be that the third adapter is set not to be movable relative to the first connector and the second connector, but rotatable relative to the first connector, that is, the third adapter is rotatably connected to the first connector. And the cooperation between the third adapter and the first unlocking member is set such that when the first unlocking member moves downward, the third adapter can be driven to rotate. Through the cooperation between the first engaging portion and the second engaging portion respectively provided on the opposite sides of the third adapter and the locking member, the locking member is driven to move in the direction facing away from the backrest, so that the first locking portion and the second locking portion are disengaged from each other, thereby unlocking the backrest locking mechanism.

[0123] In this implementation manner, the setting principles of the first locking portion, the second locking portion, the first engaging portion, and the second engaging portion are the same as those in the foregoing embodiments, so they will not be elaborated here. The connection manner between the first unlocking member and the third adapter can be any well-known and feasible manner, and it is not the inventive point of the present invention, so it will not be elaborated here.

[0124] Preferably, in this implementation manner, a torsion spring may be provided between the third adapter and the first connector, so as to facilitate the reset of the third adapter.

[0125] The lower side of the steel wire is still connected to the third adapter, and the third adapter can be pulled to rotate to drive the locking member to move and unlock the backrest locking mechanism.

[0126] As Figures 25 to 27 shown, in another embodiment, the third adapter 15' and the locking member 17' are integrally formed. Specifically, the third adapter 15' is integrally formed on the side of the locking member 17' facing the rear bracket 1; the whole formed by the locking member 17' and the third adapter 15' can only move relatively left and right relative to the first connector 16 and the second connector 911 and cannot rotate. When the first unlocking member moves downward, the third adapter can be driven to move in the direction facing away from the backrest, so as to drive the locking member to move together and unlock the backrest locking mechanism. Because the two are integrally formed, the above-mentioned third receiving groove and the first engaging portion and the second engaging portion do not need to be provided.

[0127] In this embodiment, the second locking portion 171' is arranged on the outer ring of the locking member 17'. Gear teeth 175' are also arranged on the outer ring of the locking member 17' facing away from the rear bracket 1, and correspondingly, the second accommodating groove 912 is arranged as a tooth groove meshing with the gear teeth. Alternatively, the gear teeth 175' are arranged as end face ratchet teeth on the side facing the rear bracket. Alternatively, the dimension of the end of the third adapter facing the locking member is smaller than the diameter of the end face of the gear (locking member), so that the second end face ratchet teeth can be arranged on the end face of the gear. That is to say, in combination with the aforementioned embodiment, it is acceptable to arrange the second locking member on the end face or the outer ring of the locking member.

[0128] In the above-mentioned embodiments, the first locking portion 162 and the second locking portion 171' can also be respectively set as the first end face tooth and the second end face tooth; or, the locking member can also be directly set as a gear, and the part of the teeth on the gear facing the rear bracket is set as the second locking portion, and the first receiving groove is set as a tooth groove, and the tooth groove is set as the first locking portion. Under the action of the second elastic member, the gear is engaged with the second receiving groove and the first receiving groove which are set as tooth grooves at the same time. After driving the locking member to move and disengage from the first receiving groove 161, the locking member can rotate together with the backrest relative to the rear bracket 1.

[0129] In this embodiment, because the locking member and the third adapter are integrally formed, the lower end of the steel wire is directly connected to the locking member and the third adapter to form an integral body, that is, the lower end of the steel wire is inserted into the second accommodating groove and then connected to the integral body. The connection between the steel wire and the integral body can be any known and feasible method. When the child stroller is in the unfolded state, when the backrest inclination angle is to be adjusted, the operating member 32 is driven to move relative to the backrest 91, and the integral body can be pulled into the second accommodating groove 912 by the steel wire, so that the second end face ratchet teeth 511' on the locking member 17' are disengaged from the meshing with the first end face ratchet teeth 162, and the backrest locking mechanism is unlocked, and the integral body and the backrest 91 can be rotated relative to the rear bracket 1 together. At this time, the backrest can be rotated forward / backward to achieve the adjustment of the backrest inclination angle. When it is rotated to the required angle position, the operating member 32 can be released. Under the action of the second elastic member, the backrest locking mechanism is in a locked state again.

[0130] When the stroller of the utility model is folded, the upper bracket is rotated backward and downward to drive the first unlocking member 14 to move downward. Through the cooperation of the fourth inclined surface and the third inclined surface 511', the whole is driven to move in the direction of the backrest, that is, to move into the second accommodating groove. When the locking member 17' moves to the point where the second end face ratchet teeth 175' are disengaged from the first end face ratchet teeth 162', the backrest locking mechanism is unlocked, and the backrest 91 can rotate relative to the rear bracket 1.

[0131] In the above embodiments, the driving locking member moves away from the rear bracket to unlock the backrest locking mechanism. In another embodiment, the backrest locking mechanism includes a locking member 17-1 (such as Figure 28 as shown) that is connected to the first connecting seat 16 in a relatively left-right movable manner on one side (i.e., connected to the first receiving groove on one side), and a first locking portion and a second locking portion that cooperate with each other are provided between the second connecting seat and the other side of the locking member 17-1; when the first locking portion and the second locking portion cooperate with each other, the locking member and the first connecting seat cannot rotate relative to each other, the backrest cannot rotate relative to the rear bracket, and the backrest locking mechanism is in a locked state; the cooperation between the locking member 17-1 and the first unlocking member is set such that when the first unlocking member 14 moves downward, the locking member 17-1 can be driven to move toward the rear bracket, so that the first locking portion and the second locking portion are disengaged from each other, and the backrest locking mechanism is unlocked, and the backrest 91 can rotate relative to the rear bracket 1.

[0132] The backrest locking mechanism further includes a second elastic member disposed between the locking member 17-1 and the first connecting seat 16 that can drive the locking member 17 to move toward the backrest, so that under the action of the second elastic member, the locking member can automatically move toward the backrest to make the first locking portion and the second locking portion cooperate with each other.

[0133] The setting principle of the first locking portion and the second locking portion is the same as that of the foregoing embodiments, so it will not be elaborated here.

[0134] To achieve the purpose that the downward movement of the first unlocking member can drive the locking member to move toward the rear bracket, a third adapter 15-1 can be fixedly connected or integrally formed on the side of the locking member 17-1 facing the rear bracket, and a mating groove 152-1 with an upward opening is provided on the side of the third adapter 15-1 facing the rear bracket (such as Figure 28 as shown), one side wall of the mating groove 152-1 is set as a third inclined surface (not shown in the figure), and a mating fourth inclined surface is provided on the side of the lower side of the first unlocking member facing the third inclined surface; when the first unlocking member moves downward, it can extend into the mating groove 152-1, and through the cooperation of the third inclined surface and the fourth inclined surface, the locking member 17-1 is driven to move toward the rear bracket, so that the first locking portion and the second locking portion are disengaged from each other, and further the backrest locking mechanism is unlocked.

[0135] When the first unlocking member and the locking member / third adapter / third adapter are in the above different mating manners, the connection manner between its lower side and the rear bracket can be adaptively structurally changed, and this structural change can be any well-known and feasible manner, so it will not be elaborated here.

[0136] When the locking member is arranged in such a manner, a rotatable third adapter member can be arranged in the second receiving groove. The third adapter member is arranged between the bottom wall of the second receiving groove and the unlocking member, and a first engaging portion and a second engaging portion which can cooperate with each other are respectively arranged on the opposite sides of the third adapter member and the unlocking member; the lower end of the steel wire is connected to the third adapter member. When the steel wire pulls the third adapter member to rotate, the locking member is driven to move in the direction facing away from each other under the cooperation of the first engaging portion and the second engaging portion.

[0137] A driving member 450 is arranged on the lower side of the upper bracket, and the driving groove 452 is arranged on the driving member 450.

[0138] Those skilled in the art should understand that the above-mentioned orientation or positional relationship indicated by front, back, left, right, up, and down is based on the orientation or positional relationship shown in the drawings. In the above description, the front wheel is regarded as the front, the rear wheel is regarded as the rear, the rider is regarded as the upper, the front wheel and the rear wheel are regarded as the lower, and the rider and the connecting pipe are respectively located on the left and right sides of the rear bracket. The above description is only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. When the observation visual angle changes, the above-mentioned orientation or positional relationship will also change accordingly. Therefore, it should not be construed as a limitation to the present invention.

Claims

1. A baby stroller, which can be switched between an unfolded state and a folded state, characterized in that: The child stroller includes an upper bracket, a rear bracket, a front bracket, a first linkage, a second linkage, and a third linkage. The rear side of the front bracket, the front side of the rear bracket and the lower side of the upper bracket are coaxially pivoted, or two of them are pivoted, and the third is pivoted to any one of the two. The front side of the first linkage is pivoted to the front bracket, the rear side of the second linkage is pivoted to the rear bracket, the upper side of the third linkage is pivoted to the upper bracket, and the lower side is coaxially pivoted to the first linkage and the front side of the second linkage, or two of them are pivoted, and the third is pivoted to any one of the two.

2. The baby stroller according to claim 1, characterized in that: When the child stroller is in the unfolded state, the pivot position between the upper side of the third linkage member and the upper bracket is located above the pivot position between the upper bracket and the rear bracket or / and the front bracket; the pivot position between the front side of the first linkage member and the front bracket is located below the pivot position between the front bracket and the rear bracket or / and the upper bracket; the pivot position between the rear side of the second linkage member and the rear bracket is located below the pivot position between the rear bracket and the upper bracket or / and the front bracket.

3. The baby stroller according to claim 1, characterized in that: The upper bracket includes a rider, and the upper side of the third linkage member is pivotally connected to the rider; or, the upper bracket includes a rider and a connecting tube, the lower sides of the rider and the connecting tube are pivotally connected to the rear bracket and / or the front bracket, and the upper side of the third linkage member is pivotally connected to the connecting tube.

4. The stroller according to claim 2, characterized in that: The upper bracket includes a rider, and the upper side of the third linkage member is pivotally connected to the rider; or, the upper bracket includes a rider and a connecting tube, the lower sides of the rider and the connecting tube are pivotally connected to the rear bracket and / or the front bracket, and the upper side of the third linkage member is pivotally connected to the connecting tube.

5. The baby stroller according to claim 3, characterized in that: The handlebar is arranged to be relatively fixedly connected to the connecting tube; or, the handlebar is arranged to be rotatable and convertible between a forward position and a rearward position, and the handlebar is cooperatively arranged with the connecting tube, and the cooperation of the two is arranged so that when the handlebar is in the rearward position, the child stroller can be folded, and when the child stroller is folded, the handlebar can be rotated backward and downward together with the connecting tube.

6. The baby stroller according to claim 4, characterized in that: The handlebar is arranged to be relatively fixedly connected to the connecting tube; or, the handlebar is arranged to be rotatable and convertible between a forward position and a rearward position, and the handlebar is cooperatively arranged with the connecting tube, and the cooperation of the two is arranged so that when the handlebar is in the rearward position, the child stroller can be folded, and when the child stroller is folded, the handlebar can be rotated backward and downward together with the connecting tube.

7. The stroller according to any one of claims 3 to 6, characterized in that: The connection pipe is provided to be connected to the front periphery of the seat cloth.

8. The baby stroller according to any one of claims 1 to 6, characterized in that: The first linkage member is configured as a front seating portion of a seat, and the second linkage member is configured as a rear seating portion of the seat; or, the first linkage member is configured as a seating portion of the seat.

9. The baby stroller according to claim 7, characterized in that: The first linkage member is configured as a front seating portion of a seat, and the second linkage member is configured as a rear seating portion of the seat; or, the first linkage member is configured as a seating portion of the seat.

10. The baby stroller according to any one of claims 1 to 6, characterized in that: The stroller also includes a seat backrest, the lower side of which is pivotally connected to the rear bracket, and a backrest locking mechanism is provided between the backrest and the rear bracket to limit the relative rotation of the two. The stroller also includes a backrest unlocking device movably connected to the rear bracket, the upper side of the backrest unlocking device is cooperated with the upper bracket, and the lower side is cooperated with the backrest locking mechanism. When the stroller is folded, the upper bracket rotating backward and downward can drive the backrest unlocking device to move relative to the rear bracket to unlock the backrest locking mechanism in a linked manner.

11. The baby stroller according to claim 10, characterized in that: The upper side of the backrest unlocking device is arranged in cooperation with the connecting pipe.

12. The stroller according to claim 11, characterized in that: The rear side of the first linkage member is coaxially pivoted to the rear bracket with the lower side of the backrest.

13. The stroller according to claim 8, characterized in that: The stroller also includes a seat backrest, the lower side of which is pivotally connected to the rear bracket, and a backrest locking mechanism is provided between the backrest and the rear bracket to limit the relative rotation of the two. The stroller also includes a backrest unlocking device movably connected to the rear bracket, the upper side of the backrest unlocking device is cooperated with the upper bracket, and the lower side is cooperated with the backrest locking mechanism. When the stroller is folded, the upper bracket rotating backward and downward can drive the backrest unlocking device to move relative to the rear bracket to unlock the backrest locking mechanism in a linked manner.

14. The stroller according to claim 13, characterized in that: The upper side of the backrest unlocking device is arranged in cooperation with the connecting pipe.

15. The stroller according to claim 14, characterized in that: The rear side of the first linkage member is coaxially pivoted to the rear bracket with the lower side of the backrest.

16. The stroller according to claim 9, characterized in that: The stroller also includes a seat backrest, the lower side of which is pivotally connected to the rear bracket, and a backrest locking mechanism is provided between the backrest and the rear bracket to limit the relative rotation of the two. The stroller also includes a backrest unlocking device movably connected to the rear bracket, the upper side of the backrest unlocking device is cooperated with the upper bracket, and the lower side is cooperated with the backrest locking mechanism. When the stroller is folded, the upper bracket rotating backward and downward can drive the backrest unlocking device to move relative to the rear bracket to unlock the backrest locking mechanism in a linked manner.

17. The stroller according to claim 16, characterized in that: The upper side of the backrest unlocking device is arranged in cooperation with the connecting pipe.

18. The stroller according to claim 17, characterized in that: The rear side of the first linkage member is coaxially pivoted to the rear bracket with the lower side of the backrest.

19. The baby stroller according to claim 16, 17 or 18, characterized in that: The seat fabric is also connected to the seating portion.

20. The stroller according to claim 19, characterized in that: The rear side of the seat cloth is connected to the backrest.

21. The child stroller according to any one of claims 1 to 6, 9, 11 to 18, and 20, characterized in that: A front wheel is arranged at a front lower portion of the front bracket, and a rear wheel is arranged at a rear lower portion of the rear bracket.

Images