Stroller

Abstract

The utility model discloses a baby stroller. The front wheel set and the rear wheel set can be horizontally and rotatably connected to the front side and the rear side of the lower bracket; the acting piece can be relatively and rotatably connected to the lower bracket; the torsional spring is arranged between the acting piece and the lower bracket; the upper sides of the first connecting piece and the second connecting piece are connected to the acting piece; a front wheel orientation mechanism and a rear wheel orientation mechanism are arranged between the corresponding sides of the lower support and the front wheel set and between the corresponding sides of the lower support and the rear wheel set respectively. The lower sides of the first connecting piece and the second connecting piece are connected with the front wheel orientation mechanism and the rear wheel orientation mechanism respectively. The lower side of the handlebar is connected with a driving piece, under the cooperation of the acting piece, the torsional spring and the driving piece, when the handlebar is switched between the forward position and the backward position, the acting piece can rotate together, and then the first connecting piece and the second connecting piece are pulled to move upwards or release upward pulling of the first connecting piece and the second connecting piece; and the front wheel orientation mechanism and the rear wheel orientation mechanism are switched between an unlocking state and a locking state.

Description

Technical Field

[0001] This utility model relates to the field of infant and toddler products, and in particular to children's strollers. Background Technology

[0002] Strollers are used to carry infants and toddlers. The infants and toddlers sit in the stroller seat, and the parents push the stroller forward, thus reducing the burden on the parents of carrying the child. Therefore, strollers are widely used in families with children.

[0003] Some strollers have a handlebar that can rotate between forward and backward positions. When the handlebar is in the forward position, the child inside the stroller faces the parent; when the handlebar is in the backward position, the child and parent both face forward. This design makes it easier for parents to look after their children.

[0004] However, some traditional strollers only have front wheels that can rotate horizontally, that is, rotate 360 ​​degrees around the vertical axis, while the rear wheels cannot rotate horizontally. As a result, when the rider rotates to the forward position, the front wheel (formerly the rear wheel) in the direction of travel cannot rotate horizontally. Therefore, if there is a small obstacle on the road, the front wheel in the direction of travel cannot rotate well to turn and avoid it, which makes the stroller move forward less smoothly and safely.

[0005] While some models feature horizontally rotating front and rear wheels, they utilize vertically movable guide components on the corresponding wheel mounts. These are complemented by downward-opening guide slots on the front and rear wheels. To prevent horizontal rotation of the front and rear wheels, the guide components must be moved upwards before or after a turn to engage with the corresponding slots on the front and rear wheels; conversely, they must be moved downwards to disengage from the slots. This design makes the operation of aligning and unlocking the front and rear wheels rather cumbersome. Utility Model Content

[0006] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a stroller in which both the front and rear wheels are designed to rotate horizontally. When the rider rotates to the forward position, the front wheel assembly can be switched to a state where it cannot rotate relatively horizontally, and the rear wheel assembly can be switched to a state where it can rotate relatively horizontally. When the rider rotates to the rear position, the front wheel assembly can be switched to a state where it can rotate relatively horizontally, and the rear wheel assembly can be switched to a state where it cannot rotate relatively horizontally.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A stroller includes a lower support, a handlebar pivotally connected to the lower support, and the handlebar is configured to rotate between a rearward position and a forward position.

[0009] The stroller also includes a front wheel assembly and a rear wheel assembly that are rotatably connected to the lower front side and the lower rear side of the lower support respectively. The corresponding sides of the lower support are respectively provided with a front wheel orientation mechanism and a rear wheel orientation mechanism that can restrict the relative horizontal rotation of the corresponding two.

[0010] The stroller also includes a component that is rotatably connected to the lower support, a torsion spring connected between the component and the lower support, a first connector and a second connector connected to the component on the upper side, the lower side of the first connector being connected to the front wheel directional mechanism, and the lower side of the second connector being connected to the rear wheel directional mechanism.

[0011] Furthermore, with the cooperation of the rider, drive component, torsion spring, and actuator, when the rider rotates between the forward and backward positions, the actuator also rotates, and the rotation of the actuator will link the first and second connecting components. When the rider rotates from the backward position to the forward position, the second connecting component is in a state of being pulled upward by the actuator, and the actuator releases the upward pull on the first connecting component, thereby allowing the front wheel steering mechanism to be in a locked state and the rear wheel steering mechanism to be in an unlocked state. When the rider rotates from the forward position to the backward position, the first connecting component is in a state of being pulled upward by the actuator, and the actuator releases the upward pull on the second connecting component, thereby allowing the rear wheel steering mechanism to be in a locked state and the front wheel steering mechanism to be in an unlocked state.

[0012] The actuating member, the first connecting member, and the second connecting member are further configured such that, when the stroller is in the unfolded state and the rider rotates to the middle position between the forward and backward positions, both the first connecting member and the second connecting member are pulled upward by the actuating member, thereby unlocking both the front wheel directional mechanism and the rear wheel directional mechanism.

[0013] The coordination of the rider, drive unit, torsion spring, and actuator is further configured such that when the stroller is folded up and the rider is rotated downwards, the actuator does not rotate, thereby keeping the first and second connecting members in the state before the stroller is folded up, and the front wheel directional mechanism and the rear wheel directional mechanism also in the state before the stroller is folded up.

[0014] The drive component is configured to rotate in the same direction as the rider. The actuating component is provided with a first stroke groove, and the drive component is provided with a drive part that can be rotatably extended into the first stroke groove. Preferably, the drive component includes a main body and the drive part protruding from the main body towards the actuating component. The main body is located on the side of the actuating component away from the lower support.

[0015] The engagement between the drive unit and the first travel groove is configured such that when the rider is in either a forward or backward position, the drive unit abuts against the corresponding side wall of the first travel groove. When the rider rotates to the other position, the drive unit can drive the actuator to rotate by pushing the corresponding side wall of the first travel groove, and the torsion spring twists due to the rotation of the actuator. When the rider rotates from the other position to one of the other positions, the drive unit disengages from pushing the corresponding side wall of the first travel groove, and the actuator rotates in the opposite direction under the torque of the torsion spring. Preferably, when the stroller is folded up and the rider rotates downward, the drive unit rotates and moves within the first travel groove and disengages from pushing either side wall of the first travel groove.

[0016] When the rider is in the rearward position, the drive unit abuts against the rear end wall of the first stroke groove. When the rider rotates to the forward position, the drive unit drives the actuator to rotate by pushing the rear end wall. Preferably, the stroller is configured such that when the rider is in the rearward position, the stroller can be folded up and the rider rotates backward and downward.

[0017] The lower support is recessed with an arc-shaped limiting groove that is not connected end to end. The actuating member is at least partially rotatably placed within the arc-shaped limiting groove. Preferably, when the rider is in either a forward or backward position, under the action of the torsion spring, the portion of the actuating member located within the arc-shaped limiting groove abuts against the groove wall on one side of the arc-shaped limiting groove. Preferably, when the rider rotates to the other position, the actuating member rotates until the portion of the actuating member located within the arc-shaped limiting groove abuts against the groove wall on the other side of the arc-shaped limiting groove. Preferably, when the rider is in a backward position, under the action of the torsion spring, the portion of the actuating member located within the arc-shaped limiting groove abuts against the groove wall on one side of the arc-shaped limiting groove. When the rider rotates to a forward position, the portion of the actuating member located within the arc-shaped limiting groove abuts against the groove wall on the other side of the arc-shaped limiting groove.

[0018] The actuating component includes a body and an actuating part disposed on one side of the body. The actuating part is rotatably placed within the arc-shaped limiting groove. The first stroke groove is disposed on the side of the body opposite to the actuating part. Preferably, the first connecting member and the second connecting member are both connected to the actuating part. Correspondingly, the lower bracket has a first channel and a second channel that communicate with the arc-shaped limiting groove recessed on the side where the arc-shaped limiting groove is disposed. The first channel and the second channel are respectively for the first connecting member and the second connecting member to carry wires.

[0019] The lower support is also recessed with a receiving groove, the torsion spring is placed in the receiving groove, and one end of the torsion spring is connected to the side wall or bottom wall of the receiving groove, and the other end is connected to the actuating member; preferably, the arc-shaped limiting groove is recessed on the outer edge of the receiving groove facing the actuating member, and the arc-shaped groove communicates with the receiving groove; preferably, the receiving groove and the arc-shaped limiting groove are coaxially arranged.

[0020] The driving component includes a main body and a driving part protruding from the main body towards the actuating component. The main body is located on the side of the actuating component away from the lower support. Preferably, the rider and the actuating component are pivotally connected to opposite sides of the lower support. The lower support is provided with through holes penetrating the bottom wall of the receiving groove from left to right. The actuating component is also provided with connecting holes penetrating from left to right, and the through holes and connecting holes are coaxially arranged.

[0021] The lower support includes a front foot and a rear foot, with the rear side of the front foot pivotally connected to the front side of the rear foot; the front wheel assembly is rotatably connected to the lower front side of the front foot, and the front wheel directional device is located between the lower side of the front foot and the front wheel assembly; the rear wheel assembly is rotatably connected to the lower front side of the rear foot, and the rear wheel directional device is located between the lower side of the rear foot and the rear wheel assembly.

[0022] The rear wheel steering mechanism includes a rear wheel steering member movably connected to the lower side of the rear foot, a second mating part disposed on the rear wheel assembly that can cooperate with the rear wheel steering member, and a rear elastic member disposed between the rear wheel steering member and the rear foot; the lower side of the second connecting member is connected to the rear wheel steering member. Preferably, the rear wheel steering member is configured to be movably connected to the lower side of the rear foot, and the second mating part is configured as an upward-opening steering hole. Preferably, the front wheel steering mechanism includes a front wheel steering member movably connected to the lower side of the front foot, a first mating part disposed on the front wheel assembly that can cooperate with the front wheel steering member, and a front elastic member disposed between the front wheel steering member and the lower front side of the lower bracket; the lower side of the first connecting member is connected to the front wheel steering member. Preferably, the front wheel steering member is configured to be movably connected to the lower side of the front foot, and the first mating part is configured as an upward-opening steering hole.

[0023] The rider's lower side is pivotally connected to the front foot and / or rear foot, and correspondingly, the actuating element is rotatably connected to the upper side of the front foot and / or rear foot.

[0024] Because this utility model adopts the above-mentioned technical solution, it has the following beneficial effects:

[0025] 1. When the rider rotates to the forward position, the front wheel assembly can be switched to a state where it cannot rotate relatively horizontally, and the rear wheel assembly can be switched to a state where it can rotate relatively horizontally. When the rider rotates to the rear position, the front wheel assembly can be switched to a state where it can rotate relatively horizontally, and the rear wheel assembly can be switched to a state where it cannot rotate relatively horizontally. In this way, the orientation of the front and rear wheel assemblies can be automatically switched with the rider's rotation without any additional operation, making the operation of the orientation of the front and rear wheel assemblies very simple.

[0026] 2. Regardless of whether the rider is in a forward or backward position, when the parents push the stroller forward, the front wheels can rotate horizontally, while the rear wheels can only go straight. Therefore, if there is a slight obstruction on the road, the front wheels can rotate horizontally to avoid it, while the rear wheels maintain their original direction of travel, making the stroller move more smoothly and safely.

[0027] 3. Because when the stroller is in the unfolded state, and the rider rotates to the middle position between the forward and backward positions, both the first and second connecting members are pulled upwards by the acting members. As a result, both the front wheel orientation mechanism and the rear wheel orientation mechanism are unlocked, and both the front wheel assembly and the rear wheel assembly are in a horizontally rotatable state. At this time, the entire stroller can also be rotated 180 degrees, so that the original action of rotating the rider forward becomes rotating the rider in the direction of the rider, so that the child in the stroller is facing the rider. This setting also avoids the trouble of the child caregiver having to run to change position as the rider changes direction, thus making the operation more convenient. Attached Figure Description

[0028] Figure 1 This is a three-dimensional schematic diagram of the child stroller of this utility model in the unfolded state when the rider is in a rearward position;

[0029] Figure 2 This is a plan view of the child stroller of this utility model in the unfolded state when the rider is in the forward position;

[0030] Figure 3 This is an exploded enlarged schematic diagram of the rear wheel assembly and the lower part of the rear foot of the stroller of this utility model;

[0031] Figure 4 According to Figure 2 Enlarged cross-sectional view along the BB direction;

[0032] Figure 5 According to Figure 1 An enlarged schematic diagram of part A in the middle;

[0033] Figure 6 According to Figure 1A magnified diagram of the explosion in section A;

[0034] Figure 7 According to Figure 5 Enlarged cross-sectional view along the CC direction;

[0035] Figure 8 This is an enlarged schematic diagram of the functional components of the children's stroller of this utility model;

[0036] Figure 9 This is an enlarged schematic diagram of the combination of the functional component of the stroller of this utility model with the first connecting component and the second connecting component from another angle;

[0037] Figure 10 This is an enlarged schematic diagram of the drive component of the children's stroller of this utility model;

[0038] Figure 11 According to Figure 5 A magnified diagram of the explosion;

[0039] Figure 12 According to Figure 5 Another magnified view of the explosion;

[0040] Figure 13 This is an enlarged cross-sectional view of the combination of the rider, front foot, rear foot, actuating component, and driving component when the rider is in the rearward position according to this utility model.

[0041] Figure 14 This is an enlarged cross-sectional view of the combination of the rider, front foot, rear foot, actuating component, and driving component when the rider is in the forward position.

[0042] Figure 15 This is a schematic diagram illustrating the folding process of the stroller of this utility model;

[0043] Figure 16 This is an enlarged cross-sectional view of the combination of the hand, front feet, rear feet, actuating components, and driving components during the folding process of the children's stroller of this utility model. Detailed Implementation

[0044] like Figures 1 to 16As shown, this utility model discloses a stroller that can switch between an unfolded state and a folded state. The stroller includes a lower support 1 and a handlebar 2 pivotally connected to the lower support 1 on its lower side. The handlebar 2 is configured to rotate between a rearward position and a forward position. The stroller also includes a front wheel assembly 3 and a rear wheel assembly 4 that are rotatably connected to the lower front side and the lower rear side of the lower support 1, respectively. Corresponding sides of the lower support 1 are provided with front wheel orientation mechanisms and rear wheel orientation mechanisms that restrict the relative horizontal rotation of the corresponding two wheels. That is, the stroller also includes a front wheel assembly 3 that is rotatably connected to the lower front side of the lower support 1 and a rear wheel assembly 4 that is rotatably connected to the lower rear side of the lower support 1. A front wheel orientation mechanism that restricts the relative horizontal rotation of the two wheels is provided between the lower front side of the lower support 1 and the front wheel assembly 3, and a rear wheel orientation mechanism that restricts the relative horizontal rotation of the two wheels is provided between the lower rear side of the lower support 1 and the rear wheel assembly 4.

[0045] The stroller also includes an actuating member 5 connected to the lower support 1, a torsion spring 50 connecting the actuating member 5 and the lower support 1, a first connecting member 51 and a second connecting member 52 connected to the actuating member 5 on the upper side. The lower side of the first connecting member 51 is connected to the front wheel directional mechanism, and the lower side of the second connecting member 52 is connected to the rear wheel directional mechanism. The lower side of the rider 2 is connected to a driving member 6 that can rotate in the same direction as the rider 2. The driving member 6 is configured to cooperate with the actuating member 5. With the cooperation of the actuating member 5, the torsion spring 50 and the driving member 6, when the rider 2 rotates between the forward and backward positions, the actuating member 5 also rotates, and the rotation of the actuating member 5 will link the first connecting member and the second connecting member.

[0046] When the rider 2 rotates from the rearward position to the forward position, the second connecting member 52 is in a state of being pulled upward by the actuated member, and the actuating member 5 releases the upward pull on the first connecting member 51. This allows the front wheel directional mechanism to be locked, the rear wheel directional mechanism to be unlocked, and the rear wheel assembly to rotate horizontally relative to the lower front side of the lower support, while the front wheel assembly remains oriented and cannot rotate horizontally relative to the lower front side of the lower support. When the rider 2 rotates from the forward position to the rearward position, the first connecting member 51 is in a state of being pulled upward by the actuated member, and the actuating member 5 releases the upward pull on the second connecting member 52. This allows the rear wheel directional mechanism to be locked, and the front wheel directional mechanism to be unlocked. This allows the rear wheel assembly to remain oriented and cannot rotate horizontally relative to the lower front side of the lower support, while the front wheel assembly can rotate horizontally relative to the lower front side of the lower support.

[0047] Preferably, the actuating member 5, the first connecting member 51, and the second connecting member 52 are further configured such that, when the stroller is in the unfolded state and the rider 2 rotates to the middle position between the forward and backward positions, both the first connecting member 51 and the second connecting member 52 are pulled upward by the actuating member, thereby the front wheel orientation mechanism and the rear wheel orientation mechanism are both in the unlocked state, and thus the front wheel assembly and the rear wheel assembly are both in a state that can be horizontal relative to the lower front side and the lower rear side of the lower support, respectively.

[0048] Furthermore, the cooperation between the rider 2, the drive component 6, the torsion spring 50 and the actuating component 5 is also configured such that when the stroller is folded up and the rider 2 is rotated downwards, the actuating component 5 does not rotate, so that the first connecting component 51 and the second connecting component 52 remain in the state before the stroller is folded up, and the front wheel directional mechanism and the rear wheel directional mechanism also remain in the state before the stroller is folded up.

[0049] Combination Figure 3 , 4 As shown, the rear wheel orientation mechanism includes a rear wheel orientation member 11 movably connected to the lower rear side of the lower bracket 1, and a second mating part 43 disposed on the rear wheel assembly 4 that can cooperate with the rear wheel orientation member 11. A rear elastic member 44 is disposed between the rear wheel orientation member 11 and the lower rear side of the lower bracket 1. The lower side of the second connecting member 52 is connected to the rear wheel orientation member 11. When the actuating member 5 releases the upward pull on the second connecting member 52, under the action of the rear elastic member 44, the rear wheel orientation member 11 moves relative to the lower rear side of the lower bracket 1 and cooperates with the second mating part 43. The rear wheel orientation mechanism is in a locked state, and the rear wheel assembly 4 is in an orientation state and cannot rotate horizontally relative to the lower rear side of the lower bracket 1. When the second connecting member 5 is pulled upward by the actuating member 5, the rear wheel orientation member 11 is pulled by the second connecting member 52 to move relative to the lower rear side of the lower bracket 1 and disengage from the second mating part 43. The rear wheel orientation mechanism is unlocked, and the rear wheel assembly 4 can rotate horizontally relative to the lower rear side of the lower bracket 1.

[0050] In this embodiment, the rear wheel guide member 11 is configured to be movably connected to the lower rear side of the lower bracket 1, and the second mating part 43 is configured as an upwardly opening guide hole 43. The rear wheel assembly 4 includes a rear wheel seat 41 that is rotatably connected to the lower rear side of the lower bracket 1 and a rear wheel 42 connected to the rear wheel seat 41; the guide hole 43 is disposed on the rear wheel seat 41.

[0051] Similarly, the front wheel directional mechanism includes a front wheel directional member that is movably connected to the lower front side of the lower bracket 1, and a first mating part (not shown) disposed on the front wheel assembly 3 that can cooperate with the front wheel directional member. A front elastic member is disposed between the front wheel directional member and the lower front side of the lower bracket 1, and the lower side of the first connecting member 51 is connected to the front wheel directional member. When the actuating member 5 releases the upward pull on the first connecting member 51, under the action of the front elastic member, the front wheel directional member moves relative to the lower front side of the lower bracket 1 and cooperates with the first mating part. The front wheel directional mechanism is in a locked state, and the front wheel assembly 3 is in a directional state and cannot rotate horizontally relative to the lower front side of the lower bracket 1. When the first connecting member 51 moves upward and pulls the front wheel directional member to move relative to the lower front side of the lower bracket 1 and disengage from the first mating part, the front wheel directional mechanism is unlocked, and the front wheel assembly 3 can rotate horizontally relative to the lower front side of the lower bracket 1.

[0052] The front wheel directional component is configured to be movable vertically to the lower front side of the lower bracket 1, and the first mating part is configured as an upward-opening directional hole (not shown). The front wheel assembly 3 includes a front wheel seat 31 that is rotatably connected to the lower front side of the lower bracket 1 and a front wheel 32 connected to the front wheel seat 31; the directional hole is provided on the front wheel seat 31.

[0053] The lower bracket 1 has a downward-opening receiving hole 10 on its lower rear side. The upper side of the rear wheel guide member 11 is movably positioned within the receiving hole 10, allowing the lower side of the rear wheel guide member 11 to extend downward beyond the lower side of the receiving hole and into the second guide hole 43. The rear elastic member 44 is positioned between the top wall of the receiving hole and the rear wheel guide member 11. Similarly, the lower front side of the lower bracket 1, the front wheel guide member, and the front elastic member can also be configured in this way.

[0054] Preferably, the actuating element 5 is coaxially pivotally connected to the lower support 1 with the rider 2. In other embodiments, the rider 2 may be rotatably connected to the lower support 1 about a first pivot axis, and the rider 2 may be rotatably connected to the lower support 1 about a second pivot axis, with the two pivot axes being on the same straight line or parallel.

[0055] In this embodiment, the drive member 6 is configured to rotate in the same direction as the rider 2. The actuating member 5 is provided with a first stroke groove 53, and the drive member 6 is provided with a drive part 61, which can rotatably extend into the first stroke groove 53. Preferably, the engagement between the drive part 61 and the first stroke groove 53 is configured such that when the rider 2 is in either a forward or backward position, the drive part 61 abuts against the corresponding side wall of the first stroke groove 53; when the rider 2 rotates to the other position, the drive part 61 can drive the actuating member 5 to rotate by pushing the corresponding side wall of the first stroke groove 53, and the torsion spring 50 twists due to the rotation of the actuating member 5. This configuration ensures that when rider 2 rotates from one direction to another, the drive unit 61 rotates away from the end wall, meaning that the drive unit 61 disengages from pushing the end wall corresponding to the first stroke groove and no longer exerts a thrust on that end wall. At this time, under the restoring force of the torsion spring 50, the actuating member 5 will automatically rotate in the opposite direction, so that the drive unit 61 will still contact the end wall.

[0056] Furthermore, when the stroller is folded up and the handlebars 2 are rotated downwards, the drive unit 61 rotates and moves within the first travel groove 53, and disengages from the pushing action of 53 on either side of the end wall of the first travel groove.

[0057] In this embodiment, the engagement between the drive unit 61 and the first stroke groove 53 is configured such that when the rider 2 is in the rearward position, the drive unit 61 abuts against the rear end wall 530 of the first stroke groove 53 (e.g., Figure 13 As shown in the diagram, as soon as the rider 2 rotates forward, the drive unit 61 can immediately drive the actuator 5 to rotate by pushing the rear end wall, thus resulting in a faster response. In other embodiments, when the rider 2 is in the rearward position, the drive unit 61 may not abut against the rear end wall of the first stroke groove 53, but rather there may be a certain distance between them. This way, the drive unit 61 will only contact the rear end wall after the rider 2 has rotated forward for a period of time, and the drive unit 61 will only push the actuator 5 to rotate when the rider 2 continues to rotate. This method is essentially the same as the technical solution where the drive unit 61 abuts against the rear end wall of the first stroke groove 53.

[0058] Preferably, the lower support 1 has a recessed arc-shaped limiting groove 12 on one side, with the ends not connected. The actuating member 5 is at least partially rotatably positioned within the arc-shaped limiting groove 12. When the rider 2 is in either a forward or backward position, under the action of the torsion spring 50, the portion of the actuating member 5 located within the arc-shaped limiting groove 12 abuts against the groove wall on one side of the arc-shaped limiting groove 12. When the rider 2 rotates to the other position, the actuating member 5 rotates until its portion within the arc-shaped limiting groove 12 abuts against the groove wall on the other side of the arc-shaped limiting groove 12. This makes the rider's forward and backward reversing operations more intuitive and also allows for smoother rotation of the actuating member.

[0059] In this embodiment, when the rider 2 is in the rearward position, under the action of the torsion spring 50, the part of the actuating member 5 located in the arc-shaped limiting groove 12 abuts against the groove wall 121 on one side of the arc-shaped limiting groove 12; when the rider 2 rotates to the forward position, the part of the actuating member 5 located in the arc-shaped limiting groove abuts against the groove wall 122 on the other side of the arc-shaped limiting groove 12.

[0060] The arc-shaped groove at one end of the receiving groove 11 communicates with the receiving groove 11.

[0061] The lower bracket 1 also has a recessed receiving groove 11 on one side. The torsion spring 50 is placed in the receiving groove 11, with one end of the torsion spring 50 connected to the side wall or bottom wall of the receiving groove 11, and the other end 501 connected to the actuating member 5. In this way, the actuating member 5 effectively holds the torsion spring 50 in the receiving groove 11, which not only facilitates installation but also prevents the torsion spring 50 from falling off, thus better ensuring the function of the torsion spring 50, namely, ensuring the actuating member can rotate as needed, and thus ensuring the unlocking and locking of the front wheel steering mechanism and the rear wheel steering mechanism.

[0062] In this embodiment, the arc-shaped limiting groove 12 is recessed on the outer edge of the receiving groove 11 facing the actuating member 5, and the arc-shaped groove 12 communicates with the receiving groove 11, so that part of the actuating member 5 is not blocked by the bottom wall of the arc-shaped groove 12 and is exposed in front of the receiving groove 11, thereby facilitating the connection of the other end 501 of the torsion spring.

[0063] Preferably, the arc-shaped limiting groove 12 and the receiving groove 11 are coaxially arranged so that the rotation of the actuating member 5 and the torque of the torsion spring 50 are not misaligned.

[0064] In this embodiment, the actuating member 5 includes a body 54 and an actuating part 55 disposed on one side of the body 54. The actuating part 55 is rotatably placed within the arc-shaped limiting groove 12. The first stroke groove 53 is disposed on the side of the body 54 opposite to the actuating part 55. Preferably, the first connecting member 51 and the second connecting member 52 are both connected to the actuating part 55. Correspondingly, the lower bracket 1 has a first channel 13 and a second channel 14 that communicate with the arc-shaped limiting groove 12 recessed on the side where the arc-shaped limiting groove 12 is disposed. The first channel 13 and the second channel 14 are respectively for the first connecting member 51 and the second connecting member 52 to run, so that the first connecting member 51 and the second connecting member 52 connected to the actuating member 5 can be connected to the corresponding front wheel orientation mechanism (front wheel orientation member) and rear wheel orientation mechanism (rear wheel orientation member 11) through the first channel 13 and the second channel 14, respectively. With this configuration, the portions of the first connector 51 and the second connector 52 extending outside the front and rear channels will only move within the arc-shaped limiting groove 12, the first channel 13, and the second channel 14. Thus, when the actuator 5 rotates, it will not interfere with the first connector 51 and the second connector 52, thereby affecting the upward movement and release of the first connector 51 and the second connector 52.

[0065] The drive member 6 includes a main body 62 and a drive portion 61 protruding from the main body 62 toward the actuating member. The main body 62 is located on the side of the actuating member 5 away from the lower support 1.

[0066] The lower support 1 is provided with a receiving cavity 15 (e.g., Figure 7 As shown), the arc-shaped limiting groove 12 and the receiving groove 11, the first channel 13 and the second channel 14 are all recessed from the bottom wall of the receiving cavity 15. The main body 62 and the driving part 61 of the driving member 6 and the body 54 of the actuating member are all located in the receiving cavity 15. In this way, there is installation space, which makes it easier to assemble the various components.

[0067] In this embodiment, the rider 2 and the actuating member 5 are respectively connected to opposite sides of the lower support 1. The main body 62 and the driving part 61 of the driving member 6, as well as the actuating member 5, are located on the same side of the lower support 1. The lower support 1 is provided with a through hole 110 penetrating the bottom wall of the receiving groove 11 from left to right. The actuating member 5 is also provided with a connecting hole 55 penetrating from left to right. The through hole 110 and the connecting hole 55 are coaxially arranged. A connecting member 25 connects the rider 2, passes through the through hole 110 and the connecting hole 55, and then connects to the driving member 6.

[0068] Furthermore, the driving component 6 also includes a mating platform 63 extending from the main body 62 toward the rider side. An assembly part 22 is provided on the side of the rider 2 facing the actuator 5. Of the assembly part 22 and the mating platform 63, one has a recessed mating square hole 221 on its side facing the other, while the other is square and extends into the mating square hole 221 after passing through the through hole 110 and the connecting hole 55. Preferably, a limiting groove 222 is provided on the inner wall of the mating square hole 221, and a corresponding limiting protrusion 64 protrudes from the outer wall of the other, extending into the limiting groove 222. This arrangement not only allows the rider 2 to rotate more synchronously with the actuator 5, but also facilitates the assembly and positioning of the rider 2 and the actuator 5.

[0069] The drive component 6 is provided with a through hole 65 extending from left to right, which passes through the main body 62 and the mating platform 63. The connecting component 25 passes through the driver 2, through the mating square hole 221, and then through the hole 65. A screw 26 is then screwed into the connecting component 25 from the other side of the hole 65, thereby connecting the driver 2, the lower support 1, the actuating component 5, and the drive component 6. In other embodiments, the connection between the driver 2 and the drive component 6 can also adopt other known and feasible structures, as long as they can rotate together in the same direction without interfering with other parts.

[0070] The drive unit 61 is located outside the mating platform 63, so that no interference will occur.

[0071] In other embodiments, the rider 2, drive component 6, and actuating component 5 may all be connected to the same side of the lower support 1, with the connection method modified accordingly. In this configuration, the drive component can also be integrally formed on the lower side of the rider 2.

[0072] In this embodiment, the lower support 1 includes a front leg 16 and a rear leg 17. The rear side of the front leg 16 is pivotally connected to the front side of the rear leg 17. The front wheel assembly 3 is rotatably connected to the lower front side of the front leg 16. The front wheel directional device is disposed between the lower side of the front leg and the front wheel assembly 3. The rear wheel assembly 4 is rotatably connected to the lower front side of the rear leg 17. The rear wheel directional device is disposed between the lower side of the rear leg and the rear wheel assembly 4. The front wheel directional component is movably (movably vertically) connected to the lower side of the front leg 16, and the rear wheel directional component 11 is movably (movably vertically) connected to the lower side of the rear leg 17.

[0073] The lower side of the rider 2 is pivotally connected to the front foot 16 and / or the rear foot 17, and the actuating member 5 is rotatably connected to the upper side of the front foot 16 and / or the rear foot 17. In this embodiment, the lower side of the rider 2 is pivotally connected to the rear foot 17, and the actuating member 5 is also rotatably connected to the rear foot 17. The receiving groove 11, the arc-shaped limiting groove 12, the first channel 13, and the second channel 14 are disposed on the rear foot. Similarly, the same applies to the front foot. Correspondingly, the locking mechanism is disposed between the rider 2 and the front foot 16 or the rear foot 17.

[0074] Combination Figure 6 , 8 As shown in Figure 13, when the stroller is in the unfolded state and the rider 2 is in the rearward position, the driving part 61 of the drive member 6 abuts against the rear end wall of the first stroke groove 53 of the actuating member 5, and one end of the actuating part 55 abuts against the groove wall 121 on one side of the arc-shaped limiting groove 12. The first connecting member 51 is in the pulled-up state, and the second connecting member 52 is in the released state. Thus, the first connecting member 51 pulls the front wheel guide member upward, causing it to disengage from the first guide hole on the front wheel seat. The front wheel guide mechanism is in the unlocked state, and the front wheel assembly 3 can rotate horizontally relative to the front foot, that is, the front wheel 32 can rotate horizontally relative to the front foot, and the front elastic member is in the compressed state. Because the second connecting member 52 is in the released state, under the action of the rear elastic member 44, when the rear wheel guide member 11 is aligned with the second guide hole 43 on the rear wheel seat 41, the rear wheel guide member moves downward and its lower side extends into the second guide hole 43 on the rear wheel seat 41 (e.g., Figure 4 As shown), the rear wheel steering mechanism is locked, and the rear wheel assembly 4 cannot rotate horizontally relative to the rear foot; that is, the rear wheel 42 cannot rotate horizontally relative to the rear foot. Thus, when the rider 2 is in a rearward position, the rear wheel 42 can only move straight, while the front wheel 32 can rotate horizontally. Therefore, when pushing the stroller forward by the rider 2, if there are any minor obstacles in the road, the front wheel 32 can rotate horizontally to avoid them, while the rear wheel maintains its original direction of travel, making the stroller's movement smoother and safer.

[0075] Assuming the caregiver is standing behind the stroller, when changing the direction of the handlebar 2, rotating the handlebar 2 forward causes the drive member 6 to rotate in the same direction. This drives the drive unit 61 to rotate the actuating member 5 by pushing the rear end wall 530 of the first stroke groove 53. As the actuating member 5 rotates, the torsion spring 50 is twisted, and the actuating part 55 of the actuating member 5 rotates within the arc-shaped limiting groove 12. Furthermore, as the actuating member 5 rotates, the first connecting member 51 is gradually released, and the second connecting member 52 is gradually pulled upwards. This pulls the rear wheel directional member 11 upwards, while under the action of the front elastic member, the front wheel directional member maintains a downward trend.

[0076] When the rider 2 rotates to the midpoint between the rear and forward positions, the second connecting member is in a state of being pulled upwards by the action, while the first connecting member, although being released, is not completely released, so it is still in a state of being pulled upwards. Thus, both the front and rear wheel directional mechanisms are unlocked, allowing both the front and rear wheel sets to rotate horizontally 360 degrees. At this point, the entire stroller can be rotated 180 degrees. After rotation, the original action of rotating the rider 2 forward becomes rotating the rider 2 towards the caregiver, so that the child in the stroller is facing the caregiver. This design avoids the inconvenience of the caregiver having to run to change position as the rider 2 changes direction, making operation simpler.

[0077] When rider 2 rotates to the forward position, the rear wheel directional member 11 moves upward until its lower side is completely disengaged from the directional hole 43 of the rear wheel seat 41, thereby unlocking the rear wheel directional mechanism and allowing the rear wheel 42 to rotate horizontally relative to the rear foot 17. When the front wheel seat 31 rotates until its directional hole 1 aligns with the front wheel directional member, the front wheel directional member moves downward and its lower side extends into the directional hole 1 of the front wheel seat 31, and the front wheel directional mechanism is in the unlocked state, that is, the front wheel 3 is in the directional state and cannot rotate horizontally relative to the front foot 16.

[0078] Thus, when the rider 2 is in the forward position, when the parents push the stroller forward by pushing the rider 2, it is equivalent to the rear wheel 42 being in front, which can rotate horizontally relative to the lower rear side of the lower support 1, while the front wheel 32 is in the back and can only go straight. If there is a slight obstruction on the road, the rear wheel 42 in front can rotate horizontally to avoid it, while the front wheel 32 in the back maintains its original direction of travel, which makes the stroller move more smoothly and safely.

[0079] Furthermore, during the process of driver 3 rotating from the rearward position to the forward position, drive unit 61 is always in contact with the rear end wall 530 of the first stroke groove 53.

[0080] When rider 2, currently in a forward position, is rotated to a rearward position, rider 2 is rotated in the direction of the rear wheel 40 (which, from the perspective of the caregiver pushing rider 2, is still forward). This causes the drive unit 61 of the drive component 6 to rotate in the same direction. Consequently, the drive unit 61 no longer exerts a pushing force on the rear wall 530 of the first stroke groove 53 of the actuator 5. Thus, under the restoring force of the torsion spring 50, the actuator 5 is driven to rotate in the opposite direction. Because of this rotation of the actuator 5, the first connecting member 51 is pulled upward, and the second connecting member 52 is gradually released, thereby causing the front wheel guide member to move upward, while the rear wheel guide member 11 maintains a downward trend. Until rider 2 is rotated to the rearward position, the rear wheel guide mechanism is locked again, and the front wheel guide mechanism is unlocked again.

[0081] Similarly, when rider 2 rotates from the forward position to the middle position between the backward and forward positions, both the first and second connecting parts are pulled upward by the acting part 5, thus unlocking both the front and rear wheel orientation mechanisms. Consequently, both the front and rear wheel sets are in a horizontally rotatable state. At this time, the entire stroller can also be rotated 180 degrees, so that the original action of rotating rider 2 forward becomes rotating rider 2 in the direction of the rider, making the child in the stroller face the rider. This setting also avoids the trouble of the child caregiver having to run to change position as rider 2 changes direction, thus making operation more convenient.

[0082] As described above, when rider 2 is in the rearward position, the front wheel orientation mechanism is unlocked and the rear wheel orientation mechanism is locked, thus the rear wheel 42 cannot rotate horizontally, while the front wheel 32 can rotate horizontally. When rider 2 is in the forward position, the front wheel orientation mechanism is locked and the rear wheel orientation mechanism is unlocked, thus the original front wheel 32 cannot rotate horizontally, and the original rear wheel 42 can only move straight. That is to say, regardless of the rider 2's position, when a parent pushes the stroller forward using rider 2, the front wheels in the direction of travel can rotate horizontally, while the rear wheels cannot. With this design, if there are minor obstacles on the road, such as small stones, the front wheels can rotate horizontally to avoid them, while the rear wheels maintain their original direction of travel, making the stroller move more smoothly and safely. Moreover, to achieve the above functions, no additional operation is required. With the cooperation of the rider, drive component, actuator, and torsion spring 50, simply rotating the rider 2 will automatically activate the relevant components, making the operation very simple. Furthermore, when the rider 2 rotates to the middle position between the forward and backward positions, both the first connecting member 51 and the second connecting member 52 are in a state of being pulled upward by the actuator, so the child caregiver can complete the reversal of the rider 2 without running to change direction, making the operation even more convenient.

[0083] This utility model of a children's stroller is also configured such that when the rider 2 is in the rearward position, the stroller can be folded up, and when folding up, the rider 2 rotates backward and downward. Furthermore, because the driving part of the drive member 6 and the first stroke groove 53 of the actuating member are configured as described above, when the rider 2 rotates backward and downward during the folding process (e.g....), Figure 15 As shown), the driving member 6 rotates in the same direction, and the driving part 61 of the driving member 6 rotates along the first stroke groove 53 of the actuating member 5 (as shown). Figure 16 As shown in the figure, because one end of the action part 55 of the action member abuts against the groove wall on the corresponding side of the arc-shaped limiting groove, the action member 5 remains stationary. That is to say, only the rider 2 and the drive member 6 rotate until the rider 2 can rotate no more, and the stroller is completely folded (not shown in the figure).

[0084] The setting that allows the stroller to be folded when the rider 2 is in the rearward position can be implemented using any known and feasible structure.

[0085] To unfold the folded stroller, rotate the handlebar 2 forward and upward, causing the drive component 6 to rotate as well. The drive component 6 rotates within the first stroke groove 53. When the handlebar 2 rotates to the rearward position, the drive component 6 abuts against the rear end wall of the first stroke groove 53. During this process, the actuator 5 still does not rotate.

[0086] The first connector and the second connector may be made of steel wire or similar structure.

[0087] In the above configuration, the stroller of this utility model is configured such that when the rider is in the rearward position, the drive unit abuts against the rear end wall of the first stroke groove; when the rider is in the rearward position, under the action of the torsion spring, the portion of the actuating member located within the arc-shaped limiting groove abuts against the groove wall on one side of the arc-shaped limiting groove; when the rider 2 is in the rearward position, the stroller can be folded, and when folding, the rider 2 rotates backward and downward, while the actuating member does not rotate during this folding process. In other embodiments, the configuration can be reversed, i.e., when the rider is in the forward position, the drive unit abuts against the front end wall of the first stroke groove; when the rider is in the forward position, under the action of the torsion spring, the portion of the actuating member located within the arc-shaped limiting groove abuts against the groove wall on one side of the arc-shaped limiting groove; when the rider 2 is in the forward position, the stroller can be folded, and when folding, the rider 2 rotates forward and downward, while the actuating member does not rotate during this folding process. Other related structures can be modified accordingly; these are essentially the same technical solutions.

[0088] The specific structures of the front wheel steering mechanism and the rear wheel steering mechanism can also be other known and feasible structures, as long as in the above states, when the first connecting member and the second connecting member can be pulled upward to unlock, or when the first connecting member and the second connecting member are released, they can be locked under the action of the front elastic member / rear elastic member, that is, as long as the aforementioned functions are satisfied.

[0089] The stroller also includes a linkage device disposed between the front legs 16, the rear legs 17, and the handlebars 2. This linkage device is configured such that when the handlebars 2 rotate downwards and backwards from a rearward position, the linkage device drives the front legs 16 and rear legs 17 to rotate relative to each other and move closer together; when the stroller is rotated upwards to fold, the linkage device drives the front legs 16 and rear legs 17 to rotate relative to each other and unfold. In other words, when the handlebars 2 fold and unfold, the linkage device enables the front legs 16 and rear legs 17 to fold and unfold simultaneously.

[0090] The linkage closing device can be any known and feasible structure, and is not a point of utility model of this utility model, so it will not be described in detail here.

[0091] In this embodiment, a rider locking mechanism is provided between the lower side of the rider 2 and the lower support 1. After unlocking the rider locking mechanism, the rider 2 can rotate relative to the lower support 1. Figure 7 , 11 As shown in Figure 12, the rider locking mechanism includes a first toothed groove 21 and a second toothed groove 15 respectively disposed on the lower side of the rider 2 and the opposite side of the lower support 1, a gear 71 disposed in the first toothed groove 21 and the second toothed groove 15 that can move relatively left and right, and a return spring 72 disposed between the bottom wall of the second toothed groove 15 and the gear 71. Under the action of the return spring 72, the gear 71 simultaneously meshes with the first toothed groove 21 and the second toothed groove 15, and the rider locking mechanism is in a locked state, and the rider 2 and the lower support 1 cannot rotate relative to each other.

[0092] A driven member 73, rotatable and movable, is disposed within the first tooth groove 21 between its bottom wall and the gear 71. An operating member 24, movable relative to the driven member 73, is provided on the rider 2. An unlocking steel line is connected at its lower end to the driven member 73 and at its upper end to the operating member 24. A mating member 211 protrudes from the bottom wall 21 of the first tooth groove, one side of which is a slope 212. Correspondingly, a mating groove 731 is recessed on the side of the driven member 73 facing the bottom wall of the first tooth groove, the bottom wall of which is also a slope 732. Under the action of the return spring 72, the mating member 211 extends into the mating groove 731, and the slope 212 of the mating member 211 engages with the slope 732 of the mating groove 731. When the rider locking mechanism is to be unlocked, the operating component 24 is driven to pull the unlocking steel cable upward, thereby pulling the driven component 73 to rotate. With the cooperation of the inclined surface 212 of the mating component 211 and the inclined surface 732 of the mating groove 731, the driven component 73 moves towards the gear 71 while rotating, thereby pushing the gear 71 to move into the second tooth groove 15. When the gear 71 moves to the point of disengaging from the first tooth groove 21, the rider locking mechanism is unlocked, and the rider 2 can rotate relative to the lower support 1.

[0093] The specific structure of the operating component 23, its connection to the rider 2, and its connection to the unlocking steel wire can all be any known and feasible technology, and are not the utility model point of this utility model, so they will not be described in detail here. In other embodiments, the specific structure and unlocking method of the rider locking mechanism can be any other known and feasible structure, as long as it does not affect the unlocking and locking of the aforementioned front wheel directional mechanism and rear wheel directional mechanism. Since they are not the utility model point of this utility model, they will not be described in detail here.

[0094] In this embodiment, the stroller also includes a connecting pipe 27 on the lower side and the lower support 1. The connecting pipe 27 can be used to connect to the outer periphery of the front side of a seat fabric, and the seat fabric is also connected to the seating part of the seat (not shown).

[0095] The lower side of the connecting tube 27 is pivotally connected to the lower support 1 and is located on the side of the drive member 6 opposite to the rider 2. Preferably, the lower side of the connecting tube 27 is also provided with a connecting hole. The connecting member 25 passes through the rider 2, through the mating square hole and hole 65, and then through the connecting hole on the connecting tube. Then, a screw 26 is screwed into the connecting member 25 from the other side of the connecting hole, thereby connecting the rider, the lower support and the action member, and the drive member and the connecting tube. That is, the rider, the lower support 1, the action member, the drive member and the connecting tube 27 are coaxially pivotally connected. In this way, it is equivalent to the connecting tube 27 being connected to the outside of the receiving cavity 15 of the lower support 1, thereby covering the drive member 6 and the action member 5 and preventing them from being exposed.

[0096] The connecting pipe 27 is configured to cooperate with the rider 2, and is designed such that when the stroller is folded, rotating the rider 2 from the rearward position will drive the connecting pipe 27 to rotate and fold downward as well. When the rider rotates from the rearward position to the forward position, the connecting pipe 27 will not be activated, meaning the connecting pipe 27 will remain in its original position. This function can be achieved using any known and feasible structure, but since it is not a feature of this invention, it will not be described in detail here.

[0097] The connection method between the connecting pipe 27 and the lower support 1, the connection method between the connecting pipe 27 and the seat cloth, and the cooperation method with the rider 2 can be any known and feasible structure. Since they are not the utility model points of this utility model, they will not be described in detail here.

[0098] In other embodiments, the connecting tube 27 can be omitted, and instead a cover (not shown) can be directly provided. The cover is located on the side of the drive member away from the rider, and has a connecting hole. The connector 25 passes through the rider 2, through the mating square hole and hole 65, and then through the connecting hole on the cover. Then, a screw 26 is used to lock the connector 25 into the other side of the connecting hole, thereby connecting the rider, the lower support and the action member, and the drive member and the connecting tube. In this way, the cover is equivalent to being connected to the outside of the receiving cavity 15 of the lower support 1, thereby covering the drive member and the action member and not exposing them. Correspondingly, with this configuration, when the rider 2 is in the rearward position, the rider 2 can be directly rotated backward and downward by unlocking the rider locking mechanism to fold the stroller.

[0099] This utility model of a children's stroller also includes an armrest 8, the rear side of which is connected to the upper side of the lower support 1. The armrest 8 can be configured to be detachably connected to the lower support 1, or to be rotatably connected to it, or to be fixedly connected. This is not a feature of this utility model, and therefore will not be described in detail here.

[0100] Those skilled in the art should understand that the terms "upper," "lower," "left," "right," "front," "rear," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. For example, in the above description, the location of the front wheel 32 is considered front, the location of the rear wheel 42 is considered rear, the location of the driver 2 is considered upper, and the locations of the front wheel 32 and the rear wheel 42 are considered lower. The above description is only for the convenience of describing the embodiments of this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. When the visual observation changes, the above orientation or positional relationship will also change accordingly, and therefore should not be construed as a limitation of this utility model.

Claims

1. A stroller that can switch between an unfolded state and a folded state, the stroller comprising a lower support, a handlebar pivotally connected to the lower support, and the handlebar being configured to rotate between a rearward position and a forward position; characterized in that: The stroller also includes a front wheel assembly and a rear wheel assembly that are rotatably connected to the lower front side and the lower rear side of the lower support respectively. The corresponding sides of the lower support are respectively provided with a front wheel orientation mechanism and a rear wheel orientation mechanism that can restrict the relative horizontal rotation of the corresponding two. The stroller also includes a component that is rotatably connected to the lower support, a torsion spring connected between the component and the lower support, a first connector and a second connector connected to the component on the upper side, the lower side of the first connector being connected to the front wheel directional mechanism, and the lower side of the second connector being connected to the rear wheel directional mechanism. A drive component is connected to the lower side of the rider. The drive component and the actuating component are configured to cooperate. With the cooperation of the rider, the drive component, the torsion spring, and the actuating component, when the rider rotates between the forward and backward positions, the actuating component also rotates. The rotation of the actuating component will link the first connecting component and the second connecting component. When the rider rotates from the backward position to the forward position, the second connecting component is in a state of being pulled upward by the actuating component, and the actuating component releases the upward pull on the first connecting component, thereby allowing the front wheel steering mechanism to be in a locked state and the rear wheel steering mechanism to be in an unlocked state. When the rider rotates from the forward position to the rearward position, the first connecting member is in a state where it is pulled upward by the actuated member, and the actuated member releases the upward pull on the second connecting member, thereby allowing the rear wheel orientation mechanism to be in a locked state and the front wheel orientation mechanism to be in an unlocked state.

2. The stroller according to claim 1, characterized in that: The actuating member, the first connecting member, and the second connecting member are further configured such that, when the stroller is in the unfolded state and the rider rotates to the middle position between the forward and backward positions, both the first connecting member and the second connecting member are pulled upward by the actuating member, thereby the front wheel orientation mechanism and the rear wheel orientation mechanism are both unlocked, and both the front wheel assembly and the rear wheel assembly can rotate horizontally.

3. The stroller according to claim 2, characterized in that: The coordination of the rider, drive unit, torsion spring, and actuator is further configured such that when the stroller is folded up and the rider is rotated downwards, the actuator does not rotate, thereby keeping the first and second connecting members in the state before the stroller is folded up, and the front wheel directional mechanism and the rear wheel directional mechanism also in the state before the stroller is folded up.

4. The stroller according to claim 2, characterized in that: The coordination of the rider, drive unit, torsion spring, and actuator is further configured such that when the stroller is folded up and the rider is rotated downwards, the actuator does not rotate, thereby keeping the first and second connecting members in the state before the stroller is folded up, and the front wheel directional mechanism and the rear wheel directional mechanism also in the state before the stroller is folded up.

5. The stroller according to any one of claims 1 to 4, characterized in that: The drive unit is configured to rotate in the same direction as the rider.

6. The stroller according to claim 5, characterized in that: The actuating member is provided with a first stroke groove, and the driving member is provided with a driving part, which can be rotatably extended into the first stroke groove.

7. The stroller according to claim 6, characterized in that: The engagement between the drive unit and the first stroke groove is configured such that when the rider is in either the forward or backward position, the drive unit abuts against the corresponding side wall of the first stroke groove; when the rider rotates to the other position, the drive unit can drive the actuator to rotate by pushing the corresponding side wall of the first stroke groove, and the torsion spring is twisted due to the rotation of the actuator.

8. The stroller according to claim 7, characterized in that: When the rider rotates from the other direction position to one of the directions, the drive unit disengages from the push on the side wall corresponding to the first stroke groove, and the actuating element rotates in the opposite direction under the action of the torsion spring torque.

9. The stroller according to claim 6, characterized in that: When the stroller is folded up and the rider rotates downwards, the drive unit rotates and moves within the first travel groove, disengaging from pushing against either end wall of the first travel groove.

10. The stroller according to any one of claims 6 to 9, characterized in that: When the rider is in the rearward position, the drive unit abuts against the rear end wall of the first stroke groove. When the rider rotates to the forward position, the drive unit drives the actuator to rotate by pushing the rear end wall.

11. The stroller according to claim 10, characterized in that: The stroller is configured such that when the rider is in a rearward position, the stroller can be folded up and the rider rotates backward and downward.

12. The stroller according to any one of claims 1 to 4, characterized in that: The lower support has an arc-shaped limiting groove on one side that is not connected end to end, and the actuating element can be rotatably placed in the arc-shaped limiting groove.

13. The stroller according to claim 12, characterized in that: When the rider is in either the forward or backward position, under the action of the torsion spring, the portion of the actuating element located within the arc-shaped limiting groove abuts against the groove wall on one side of the arc-shaped limiting groove.

14. The stroller according to claim 13, characterized in that: When the rider rotates to another orientation position, the actuating element rotates until the portion of it located within the arc-shaped limiting groove abuts against the groove wall on the other side of the arc-shaped limiting groove.

15. The stroller according to claim 14, characterized in that: When the rider is in the rearward position, under the action of the torsion spring, the part of the actuating element located in the arc-shaped limiting groove abuts against the groove wall on one side of the arc-shaped limiting groove. When the rider rotates to the forward position, the portion of the actuating element located within the arc-shaped limiting groove abuts against the groove wall on the other side of the arc-shaped limiting groove.

16. The stroller according to any one of claims 6 to 9, 11, characterized in that: The lower support has an arc-shaped limiting groove on one side that is not connected end to end, and the actuating element can be rotatably placed in the arc-shaped limiting groove.

17. The stroller according to claim 16, characterized in that: When the rider is in either the forward or backward position, under the action of the torsion spring, the portion of the actuating element located within the arc-shaped limiting groove abuts against the groove wall on one side of the arc-shaped limiting groove.

18. The stroller according to claim 17, characterized in that: When the rider rotates to another orientation position, the actuating element rotates until the portion of it located within the arc-shaped limiting groove abuts against the groove wall on the other side of the arc-shaped limiting groove.

19. The stroller according to claim 18, characterized in that: When the rider is in the rearward position, under the action of the torsion spring, the part of the actuating element located in the arc-shaped limiting groove abuts against the groove wall on one side of the arc-shaped limiting groove. When the rider rotates to the forward position, the portion of the actuating element located within the arc-shaped limiting groove abuts against the groove wall on the other side of the arc-shaped limiting groove.

20. The stroller according to any one of claims 17 to 19, characterized in that: The actuating element includes a body and an actuating part disposed on one side of the body. The actuating part is rotatably placed in the arc-shaped limiting groove, and the first stroke groove is disposed on the side of the body opposite to the actuating part.

21. The stroller according to claim 20, characterized in that: The first connector and the second connector are both connected to the functional part. Correspondingly, the lower bracket has a first channel and a second channel that communicate with the arc-shaped limiting groove on one side. The first channel and the second channel are respectively for the first connector and the second connector to run wires.

22. The stroller according to claim 20, characterized in that: The lower support is also recessed with a receiving groove, the torsion spring is placed in the receiving groove, and one end of the torsion spring is connected to the side wall or bottom wall of the receiving groove, and the other end is connected to the actuating element.

23. The stroller according to claim 22, characterized in that: The arc-shaped limiting groove is recessed on the outer edge of the receiving groove facing the working member, and the arc-shaped groove communicates with the receiving groove.

24. The stroller according to claim 23, characterized in that: The receiving groove and the arc-shaped limiting groove are arranged coaxially.

25. The stroller according to any one of claims 22 to 24, characterized in that: The driving component includes a main body and a driving portion protruding from the main body towards the actuating component, wherein the main body is located on the side of the actuating component away from the lower support.

26. The stroller according to claim 25, characterized in that: The rider and the actuator are pivotally connected to opposite sides of the lower support. The lower support is provided with through holes penetrating the bottom wall of the receiving groove from left to right. The actuator is also provided with connecting holes penetrating from left to right, and the through holes and connecting holes are coaxially arranged.

27. The stroller according to any one of claims 1 to 4, 6 to 9, 11, 13 to 15, 17 to 19, 21 to 24, 26, characterized in that: The lower support includes a front foot and a rear foot, with the rear side of the front foot pivotally connected to the front side of the rear foot; the front wheel assembly is rotatably connected to the lower front side of the front foot, and the front wheel directional device is located between the lower side of the front foot and the front wheel assembly; the rear wheel assembly is rotatably connected to the lower front side of the rear foot, and the rear wheel directional device is located between the lower side of the rear foot and the rear wheel assembly.

28. The stroller according to claim 27, characterized in that: The rider's lower side is pivotally connected to the front foot and / or rear foot, and correspondingly, the actuating element is rotatably connected to the upper side of the front foot and / or rear foot.

29. The stroller according to claim 28, characterized in that: The rear wheel steering mechanism includes a rear wheel steering member that can be movably connected to the lower side of the rear foot, a second mating part disposed on the rear wheel assembly that can cooperate with the rear wheel steering member, and a rear elastic member is disposed between the rear wheel steering member and the rear foot, and the lower side of the second connecting member is connected to the rear wheel steering member.

30. The stroller according to claim 29, characterized in that: When the actuating member releases its upward pull on the second connecting member, under the action of the rear elastic member, the rear wheel directional member moves relative to the lower rear side of the lower bracket and engages with the second mating part, and the rear wheel directional mechanism is in a locked state.

31. The stroller according to claim 30, characterized in that: The rear wheel directional component is configured to be movably connected to the lower side of the rear wheel. The second mating part is configured as an upward-opening directional hole. When the rear wheel directional component moves downward and its lower side extends into the directional hole, the rear wheel directional mechanism is in a locked state.

32. The stroller according to claim 31, characterized in that: The front wheel steering mechanism includes a front wheel steering member that can be movably connected to the lower side of the front foot, a first mating part disposed on the front wheel assembly that can cooperate with the front wheel steering member, and a front elastic member is disposed between the front wheel steering member and the lower front side of the lower bracket. The lower side of the first connecting member is connected to the front wheel steering member.

33. The stroller according to claim 32, characterized in that: When the actuating member releases its upward pull on the first connecting member, under the action of the front elastic member, the front wheel directional member moves relative to the lower front side of the lower bracket and engages with the first mating part, and the front wheel directional mechanism is in a locked state.

34. The stroller according to claim 33, characterized in that: The front wheel directional component is configured to be movably connected to the lower side of the front foot. The first mating part is configured as an upward-opening directional hole. When the front wheel directional component moves downward and its lower side extends into the directional hole, the front wheel directional mechanism is in a locked state.

Images