Baby stroller frames and baby strollers

Abstract

The present disclosure relates to a baby carriage frame and a baby carriage. The baby carriage frame comprises: a front foot rod, a rear foot rod, a seat structure, a handlebar, a front wheel group, a rear wheel group, a folding structure and a linkage structure, wherein the front wheel group is arranged at the first end of the front foot rod, the rear wheel group is arranged at the first end of the rear foot rod, the seat structure is connected to the handlebar, the folding structure is connected to the second end of the front foot rod, the second end of the rear foot rod and the handlebar, and is used to realize the rotational connection between the second end of the front foot rod, the second end of the rear foot rod and the handlebar, and the linkage structure is arranged between the seat structure, the front foot rod and the rear foot rod, and is used to drive the front foot rod and the rear foot rod to fold toward each other when the seat structure is driven by the handlebar to move toward the front foot rod. The embodiments of the present disclosure can make the folding operation of the baby carriage more convenient.

Description

Technical Field

[0001] The present disclosure relates to the field of baby strollers, and in particular to a baby stroller frame and a baby stroller. Background Art

[0002] A baby stroller is a tool vehicle designed to facilitate outdoor activities for babies. In order to facilitate carrying and save storage space, foldable baby strollers have become the mainstream in the market. When folding some existing foldable baby strollers, the operator needs to push the structure on the baby stroller frame with both hands to complete the folding action when unlocking, which is not only laborious, but also difficult to complete the folding alone when holding a baby. In addition, when folding some foldable baby strollers, the operator needs to fold multiple parts separately, which is time-consuming and laborious. Utility Model Content

[0003] In view of this, the embodiments of the present disclosure provide a baby stroller frame and a baby stroller, which can make the folding operation of the baby stroller more convenient.

[0004] In one aspect of the present disclosure, a baby stroller frame is provided, comprising: a front foot rod, a rear foot rod, a seat structure, a handlebar, a front wheel group, a rear wheel group, a folding structure and a linkage structure, wherein the front wheel group is arranged at a first end of the front foot rod, the rear wheel group is arranged at a first end of the rear foot rod, the seat structure is connected to the handlebar, the folding structure is connected to the second end of the front foot rod, the second end of the rear foot rod and the handlebar, and is used to achieve a rotational connection between the second end of the front foot rod, the second end of the rear foot rod and the handlebar, and the linkage structure is arranged between the seat structure, the front foot rod and the rear foot rod, and is used to drive the front foot rod and the rear foot rod to fold toward each other when the seat structure is driven by the handlebar to move toward the front foot rod.

[0005] In some embodiments, the seat structure includes: a side armrest rod and a seat rod, the side armrest rod includes at least two connected side armrest rod segments, and the two ends of the side armrest rod are respectively connected to the seat rod and the handlebar rod, so that when the handlebar rod and the front foot rod are folded toward each other, the at least two side armrest rod segments can be driven to fold toward each other.

[0006] In some embodiments, the seat structure also includes: a backrest rod, which is rotatably connected to the seat rod and connected to the handlebar rod or the side armrest rod, and can be rotated relative to the seat rod under the drive of the handlebar rod or the side armrest rod to achieve the backrest rod and the seat rod being folded toward each other or unfolded in the opposite direction.

[0007] In some embodiments, the linkage structure includes: a sliding sleeve, which is mounted on the front foot rod and connected to the seat structure and / or the rear foot rod through a connecting piece, capable of moving along the front foot rod toward the front wheel group, and driving the seat structure and / or the rear foot rod to fold toward the front foot rod through the connecting piece.

[0008] In some embodiments, the linkage structure also includes: a seat support rod and a rear foot support rod, the two ends of the seat support rod are rotatably connected to the seat structure and the sliding sleeve respectively, the two ends of the rear foot support rod are rotatably connected to the sliding sleeve and the rear foot rod respectively, the seat support rod serves as a connecting piece between the seat structure and the sliding sleeve, and can drive the seat structure to fold toward the side close to the front foot rod or to unfold toward the side away from the front foot rod, and the rear foot support rod serves as a connecting piece between the rear foot rod and the sliding sleeve, and can drive the rear foot rod to fold toward the side close to the front foot rod or to unfold toward the side away from the front foot rod.

[0009] In some embodiments, the front foot rod is a double-rod structure, the sliding sleeve includes a pair of sliding sleeves respectively sleeved on the double-rod structure, and the seat support rod and the rear foot support rod are both pivotally connected between the pair of sliding sleeves.

[0010] In some embodiments, the rear foot rod includes a first rear foot rod and a second rear foot rod respectively connected to the two groups of rear wheels in the rear wheel group, and the rear foot support rod includes a cross bar and a connecting rod, the cross bar is rotatably connected between the first rear foot rod and the second rear foot rod, and the connecting rod is connected between the sliding sleeve and the cross bar.

[0011] In some embodiments, the folding structure includes: a folding seat body, a handle seat body and a rear foot seat body, the handle seat body is connected to the handle rod and is rotatably mounted on the folding seat body, and the rear foot seat body is connected to the rear foot rod and is rotatably mounted on the folding seat body; the baby stroller frame also includes: a first locking mechanism and an unlocking structure, the first locking mechanism is arranged between the folding seat body and the handle seat body, and is used to maintain a relative fixed relationship between the folding seat body and the handle seat body in a first locking position, the unlocking structure is arranged on the handle rod and is connected to the first locking mechanism through a first pull rope, and is used to move the first locking mechanism from the first locking position to the first unlocking position when triggered externally, so that the handle seat body can rotate relative to the folding seat body.

[0012] In some embodiments, the handlebar rod includes an upper handlebar tube, a lower handlebar tube and a rotating joint arranged between the upper handlebar tube and the lower handlebar tube, the lower handlebar tube is connected to the handlebar seat body and is rotatably mounted on the folding seat body, the unlocking structure includes: a joint locking mechanism, an unlocking key and a linkage unlocking member, the joint locking mechanism is arranged on the rotating joint, and can lock the rotational position between the upper handlebar tube and the lower handlebar tube, the unlocking key is located on the upper handlebar tube, and can unlock the joint locking mechanism when triggered externally, the linkage unlocking member is arranged on the rotating joint and connected to the first pull rope, and can move the first locking mechanism from the first locking position to the first unlocking position through the first pull rope when the upper handlebar tube is rotated to a preset angle position relative to the lower handlebar tube.

[0013] In some embodiments, the first locking mechanism includes a toothed member and a first spring, the folding seat body and the handle seat body are both provided with a toothed structure capable of engaging with the toothed member, the toothed member and the first spring are both arranged between the folding seat body and the handle seat body, the toothed member is connected to the first pull rope, and can reach the first unlocking position under the pull of the first pull rope and disengage from the toothed structure of the folding seat body, the toothed member can also be reset to the first locking position under the action of the first spring, and engage with the toothed structures of the folding seat body and the handle seat body at the same time.

[0014] In some embodiments, the folding seat body is fixedly connected to the front foot rod, and the stroller frame also includes a second locking mechanism, which is arranged on the folding seat body and can lock the position of the linkage structure relative to the front foot rod in a second locking position, and release the movement restriction of the linkage structure relative to the front foot rod in a second unlocking position.

[0015] In some embodiments, the linkage structure includes a sliding sleeve mounted on the front foot rod, the sliding sleeve is connected to the seat structure and / or the rear foot rod by a connecting piece, can move along the front foot rod toward the front wheel group, and drive the seat structure and / or the rear foot rod to fold toward the front foot rod through the connecting piece; the second locking mechanism includes a first hook body, a second hook body and a linkage component, the second hook body is fixed to a side of the sliding sleeve adjacent to the folding seat body, the first hook body is arranged on the folding seat body and has a hook head portion cooperating with the second hook body, the linkage component is connected to the handlebar seat body and is connected to the first hook body through a second pull rope; the linkage component can drive the hook head portion of the first hook body to disengage from the hooking position of the second hook body through the second pull rope when the handlebar seat body rotates at a preset angle relative to the folding seat body.

[0016] In some embodiments, the folding structure also includes a folding elastic assist structure, which is arranged between the handle base and the rear foot base, and is used to provide a relative twisting driving force between the handle base and the rear foot base when the first locking mechanism is in the first unlocking position, so as to assist the handle bar and the rear foot bar to fold toward each other.

[0017] In some embodiments, the folding elastic assist structure includes a protrusion and a torsion spring, wherein the protrusion is arranged on the outside of the sleeve connector between the rear foot seat body and the rear foot rod, one end of the torsion spring is fixedly connected to the handlebar seat body, and the other end abuts against or is connected to the protrusion.

[0018] In one aspect of the present disclosure, a baby stroller is provided, comprising the aforementioned baby stroller frame.

[0019] Therefore, according to the embodiment of the present disclosure, a folding structure is provided to realize a rotational connection between the front leg rod, the rear leg rod and the handlebar, and when the seat structure is driven by the handlebar to move toward the front leg rod, the front leg rod and the rear leg rod are driven to fold toward each other through a linkage structure, thereby making it more convenient for the user to operate when folding the stroller, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0021] The present disclosure may be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0022] Figure 1 is a schematic structural diagram of an embodiment of a baby stroller frame according to the present disclosure;

[0023] Figure 2 yes Figure 1 A schematic diagram of the structure of the embodiment at a lateral angle;

[0024] Figure 3 yes Figure 1 An enlarged schematic diagram of a local structure of an embodiment;

[0025] Figure 4 is an exploded schematic diagram of a linkage structure according to an embodiment of a baby stroller frame of the present disclosure;

[0026] Figure 5 is an exploded schematic diagram of a folding structure according to an embodiment of a baby stroller frame disclosed herein;

[0027] Figure 6 is a cross-sectional schematic diagram of a folding structure according to an embodiment of a baby stroller frame disclosed herein;

[0028] Figure 7is an exploded schematic diagram of a folding structure of an embodiment of a baby stroller frame according to the present disclosure from another perspective;

[0029] Figure 8 and Fig. 9 They are schematic diagrams of the structure of the folding structure in different cross sections in one embodiment of the baby stroller frame disclosed herein;

[0030] Fig.10 (a)- Fig.10 (e) are schematic diagrams of a process of gradually folding a baby stroller frame from an unfolded state according to an embodiment of the present invention.

[0031] It should be understood that the size of each part shown in the accompanying drawings is not drawn according to the actual proportional relationship. In addition, the same or similar reference numerals represent the same or similar components. DETAILED DESCRIPTION

[0032] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present disclosure and its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the components and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limiting.

[0033] The words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprise" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0034] In the present disclosure, when a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other device without an intermediate device, or may not be directly connected to the other device but have an intermediate device.

[0035] All terms (including technical terms or scientific terms) used in the present disclosure have the same meanings as those understood by ordinary technicians in the field to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0036] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0037] like Figure 1 FIG. 1 is a schematic diagram of the structure of an embodiment of a baby stroller frame according to the present disclosure. Figure 1 , and combined with reference Figure 2-Figure 9 In some embodiments, the baby carriage frame includes: a front leg bar 1, a rear leg bar 2, a seat structure 3, a handle bar 4, a front wheel set 5, a rear wheel set 6, a folding structure 7 and a linkage structure 8. The front leg bar 1, the rear leg bar 2, the handle bar 4 and other rods can be solid rod structures or hollow tube structures. The front wheel set 5 is arranged at the first end (i.e. Figure 1 The rear wheel set 6 is arranged at the first end of the rear foot rod 2 (i.e. Figure 1 The end of the middle and rear foot pole close to the ground).

[0038] The seat structure 3 is connected to the handlebar 4. When the handlebar 4 is rotated by force, the seat structure 3 can be driven to rotate accordingly. The folding structure 7 is connected to the second end of the front foot bar 1, the second end of the rear foot bar 2 and the handlebar 4, and is used to realize the rotational connection between the second end of the front foot bar 1, the second end of the rear foot bar 2 and the handlebar 4. The linkage structure 8 is arranged between the seat structure 3, the front foot bar 1 and the rear foot bar 2. When the seat structure 3 is driven by the handlebar 4 to move toward the front foot bar 1, the linkage structure 8 can drive the front foot bar 1 and the rear foot bar 2 to fold toward each other. In this way, the operator can fold the seat structure, the front foot bar and the rear foot bar together by applying force to the handlebar, thereby saving time and effort and being more convenient to use.

[0039] refer to Figure 1 and Figure 2In some embodiments, the seat structure 3 includes a side handle bar 31 and a seat bar 32. The seat bar 32 can be used to bear the weight of the baby riding in the stroller. The side handle bar 31 includes at least two connected side handle bar segments 31a, 32b, and the two ends of the side handle bar 31 are respectively connected to the seat bar 32 and the handle bar 4, so that when the handle bar 4 and the front foot bar 1 are folded toward each other, the at least two side handle bar segments 31a, 32b can be driven to fold toward each other. Figure 3 In the embodiment, one end of the side armrest rod sections 31a and 32b are hinged to each other, and the other end is hinged to the handlebar rod 4 and the seat rod 32 respectively.

[0040] The side handle bar 31 can be on one side of the baby stroller frame (for example, the left side or the right side, where the position of the front foot bar is the forward reference), or on both sides of the baby stroller frame. The side handle bar 31 can protect the baby sitting in the baby stroller on both sides, and can also be used for the baby to grasp to stabilize the body. The side handle bar segments with a multi-section connection structure can make the side handle bar foldable and reduce the space occupied.

[0041] In some embodiments, the seat post 32 may be composed of a plurality of rods (solid or hollow), for example, Figure 3 In the embodiment, the seat bar 32 includes two longitudinal bars extending in the front-rear direction and two transverse bars extending in the left-right direction and connected between the two longitudinal bars. One end of the two longitudinal bars is pivotally connected to the handlebar 4, and the other end is a free end, which can be set to be adjustable in length as required.

[0042] refer to Figure 1-Figure 3 In some embodiments, the seat structure 3 further includes a backrest rod 33. The backrest rod 33 is rotatably connected to the seat rod 32 and is connected to the handlebar rod 4 or the side armrest rod 31. The backrest rod 33 can rotate relative to the seat rod 32 under the drive of the handlebar rod 4, or when the handlebar rod 4 drives the side armrest rod 31 to fold, the side armrest rod 31 drives the backrest rod 33 to move, thereby realizing that the backrest rod 33 and the seat rod 32 are folded toward each other or unfolded in the opposite direction. In addition, refer to Figure 1-Figure 3 The seat structure 3 may further include a front armrest bar 34 for the baby riding in the stroller to grasp, and a front table board may be arranged thereon as required.

[0043] refer to Figure 3 and Figure 4In some embodiments, the linkage structure 8 includes a sliding sleeve 81. The sliding sleeve 81 is sleeved on the front foot rod 1 and connected to the seat structure 3 and / or the rear foot rod 2 through a connecting piece, and can move along the front foot rod 1 toward the front wheel set 5, and drive the seat structure 3 and / or the rear foot rod 2 to fold toward the front foot rod 1 through the connecting piece. In this way, the baby carriage frame can be designed according to the use needs to drive any one of the seat structure 3 and the rear foot rod 2 to rotate relative to the front foot rod 1, and the other can also be driven to rotate relative to the front foot rod 1, so as to achieve the seat structure 3 and the rear foot rod 2 to fold toward each other or unfold in the opposite direction.

[0044] exist Figure 3 In the embodiment, the linkage structure 8 further includes a seat support rod 82 and a rear foot support rod 83. The two ends of the seat support rod 82 are rotatably connected to the seat structure 3 and the sliding sleeve 81, respectively. The seat support rod 82 can be used as a connecting piece between the seat structure 3 and the sliding sleeve 81, and can achieve a stable support effect of the seat structure 3 on the front foot rod 1, and can also drive the seat structure 3 to fold toward the side close to the front foot rod 1 or to unfold toward the side away from the front foot rod 1. The two ends of the rear foot support rod 83 are rotatably connected to the sliding sleeve 81 and the rear foot rod 2, respectively. The rear foot support rod 83 can be used as a connecting piece between the rear foot rod 2 and the sliding sleeve 81, and can achieve a stable support effect between the front and rear foot rods, and can also drive the rear foot rod 2 to fold toward the side close to the front foot rod 1 or to unfold toward the side away from the front foot rod 1.

[0045] refer to Figure 4 In some embodiments, the front foot rod 1 is preferably a double-rod structure, that is, the front foot rod 1 includes two front foot rods 1a and 1b that are arranged in parallel and at a relatively close distance. Accordingly, the sliding sleeve 81 may include a pair of sliding sleeves 81a and 81b that are respectively sleeved on the double-rod structure. A pivot may be provided between the sliding sleeves 81a and 81b, and the seat support rod 82 and the rear foot support rod 83 may be both pivotally connected to the pivot between the pair of sliding sleeves 81a and 81b. The front foot rod 1 of this double-rod structure has a stronger bearing capacity, and pivoting the seat support rod 82 and the rear foot support rod 83 between the pair of sliding sleeves can make the seat structure 3 more stable relative to the support of the front foot rod 1 and the support between the front and rear foot rods.

[0046] The front and rear caster groups need to form a certain support area on the ground to ensure that the center of gravity of the baby carriage falls within the support area to avoid tipping. Accordingly, it is preferred that the rear foot rod 2 includes a first rear foot rod 2a and a second rear foot rod 2b connected to the two groups of rear wheels in the rear wheel group 6 respectively. The first rear foot rod 2a and the second rear foot rod 2b can be set to a certain width as required, such as 30 to 50 cm, etc. In order to make the rear foot support rod better support the rear foot rod, in some embodiments, the rear foot support rod 83 includes a cross bar 83b and a connecting rod 83a. The cross bar 83b is rotatably connected between the first rear foot rod 2a and the second rear foot rod 2b, and the connecting rod 83a is connected between the sliding sleeve 81 and the cross bar 83b. The connecting rod 83a is preferably connected to the center position of the cross bar 83b to make the supporting force more balanced. One or more connecting rods 83a can be set as required.

[0047] refer to Figure 4-Figure 6 In some embodiments, the folding structure 7 includes: a folding seat body 71, a handle seat body 72 and a rear foot seat body 73. The handle seat body 72 is connected to the handle bar 4 and is rotatably mounted on the folding seat body 71. The rear foot seat body 73 is connected to the rear foot bar 2 and is rotatably mounted on the folding seat body 71.

[0048] refer to Figure 1 The handlebar 4 includes an upper handlebar tube 43, a lower handlebar tube 41, and a rotating joint 42 disposed between the upper handlebar tube 43 and the lower handlebar tube 41. The lower handlebar tube 41 is connected to the handlebar seat body 72 and is rotatably mounted on the folding seat body 71. The folding seat body 71 may include two sets of internal chambers, wherein the internal chamber that cooperates with the handlebar seat body 72 is a first internal chamber 71a, and the internal chamber that cooperates with the rear foot seat body 73 is a second internal chamber 71b. The handlebar seat body 72 may be configured as Figure 5 and Figure 6 The multi-section structure exemplified in the example includes a first diameter section matching the inner diameter size of the first internal chamber 71a and a second diameter section matching the cross-sectional size of the handlebar lower tube 41, and there is also a transition section with a gradually changing diameter size between the first diameter section and the second diameter section.

[0049] In order to realize the connection between the handlebar lower tube 41 and the handlebar seat body 72, a sleeve connector 72a can be provided, and a connecting hole can be provided on the sleeve connector 72a, and the second diameter section of the handlebar seat body 72 and the end of the handlebar lower tube 41 can be provided with connecting holes, so that the second diameter section of the handlebar seat body 72 and the end of the handlebar lower tube 41 are connected through the sleeve connector 72a and the screw rod 72e (or pin shaft, etc.).

[0050] exist Figure 2 and Figure 3In the embodiment, the handlebar 4 may further include a roof frame 44 and a folding fixing member 45. The roof frame 44 may be used to install a roof of the baby carriage, and when unfolded, it may shield the baby in the baby carriage from sunlight. The folding fixing member 45 may be used to cooperate with the fixing structure on the rear foot rod after the entire frame is folded to fix the frame in the folded state.

[0051] refer to Figure 5 and Figure 6 The rear foot seat body 73 can be configured as Figure 5 and Figure 6 The multi-section structure exemplified in the embodiment includes a support section that matches the inner diameter of the second inner chamber 71b and has a plurality of annular grooves or spiral grooves, and a connection section for connecting with the rear foot rod 2. Annular grooves or spiral grooves may also be provided on the outer circumference of the connection section, and the cross-sectional size of the connection section may be smaller than that of the support section to facilitate installation.

[0052] In order to realize the connection between the rear foot rod 2 and the rear foot seat body 73, a sleeve connector 73a can be provided. The sleeve connector 73a can have a non-circular cavity and match the outer contour of the connecting section of the rear foot seat body 73. A connecting hole can be provided on the sleeve connector 73a, and the connecting section of the rear foot seat body 73 and the end of the rear foot rod 2 can be provided with a connecting hole, so that the connecting section of the rear foot seat body 73 and the end of the rear foot rod 2 are connected by the sleeve connector 73a and the screw 73b (or the pin, etc.). In this way, on the one hand, the relative axial position of the sleeve connector 73a, the rear foot seat body 73 and the rear foot rod 2 can be limited, and on the other hand, the circumferential reverse torque transmission can be realized through the contour matching of the sleeve connector 73a and the rear foot seat body 73 and the connection effect of the screw 73b. The size of one end of the sleeve connector 73a adjacent to the folding seat body 71 is larger than the second internal chamber 72a, so that the lateral motion range of the rear foot seat body 73 can be limited.

[0053] In order to maintain the stability of the frame in the unfolded state and to facilitate folding, in some embodiments, the baby carriage frame further includes a first locking mechanism and an unlocking structure. The first locking mechanism may be disposed between the folding seat body 71 and the handle seat body 72, and is used to maintain the relative fixed relationship between the folding seat body 71 and the handle seat body 72 in the first locking position. The unlocking structure may be disposed on the handle bar 4 and connected to the first locking mechanism through a first pull rope 93, and is used to move the first locking mechanism from the first locking position to the first unlocking position when triggered externally, so that the handle seat body 72 can rotate relative to the folding seat body 71.

[0054] For ease of understanding, refer to Figure 5 and Figure 6, the first locking mechanism includes a toothed member 91 and a first spring 92. The folding seat body 71 and the handle seat body 72 are both provided with a toothed structure that can mesh with the toothed member 91. The toothed member 91 and the first spring 92 are both arranged between the folding seat body 71 and the handle seat body 72. The toothed member 91 is connected to the first pull rope 93 and can reach the first unlocking position under the pulling of the first pull rope 93. In the first unlocking position, the toothed member 91 is disengaged from the meshing with the toothed structure of the folding seat body 71. In this way, the handle seat body 72 can rotate relative to the folding seat body 71. The toothed member 91 can also be reset to the first locking position under the action of the first spring 92. In the first locking position, the toothed member 91 is meshed with the toothed structures of the folding seat body 71 and the handle seat body 72 at the same time. In this way, the handle seat body 72 is fixed to the folding seat body 71 in the circumferential direction and cannot rotate relative to each other.

[0055] The toothed member 91 may be a gear, or a regular or irregular component with a toothed shape. The toothed structure in the folding seat body 71 and the handle seat body 72 may be a gear inner ring or a cavity with a toothed inner contour respectively arranged on the folding seat body 71 and the handle seat body 72.

[0056] In some embodiments, the unlocking structure may include a joint locking mechanism, an unlocking key and a linkage unlocking member. The joint locking mechanism may be arranged on the rotating joint 42, and can lock the rotational position between the handle upper tube 43 and the handle lower tube 41. The unlocking key is located on the handle upper tube 43, for example, located at the top middle position of the handle upper tube 43, so as to facilitate the user's operation. The unlocking key can unlock the joint locking mechanism when it is triggered externally. The linkage unlocking member is arranged on the rotating joint 42 and connected to the first pull rope 93, and can move the first locking mechanism from the first locking position to the first unlocking position through the first pull rope 93 when the handle upper tube 43 rotates to a preset angle position relative to the handle lower tube 41. For example, the locking effect of the joint locking mechanism is first released by the unlocking key, and then the handle upper tube 43 is rotated backward until it is close to the handle lower tube 41. At this time, the linkage unlocking member drives the first pull rope 93 to move in a direction away from the folding seat 71 as the handle upper tube 43 rotates. The first pull rope 93 can further drive the toothed member 91 to move in a direction away from the folding seat body 71 until it reaches the first unlocking position. At this time, the handlebar lower tube 41 can rotate relative to the folding seat body 71 to achieve further folding.

[0057] In order to ensure a stable supporting relationship between the front foot rod 1 and the rear foot rod 2 when the frame is unfolded, in some embodiments, the folding seat body 71 is fixedly connected to the front foot rod 1. The baby stroller frame also includes a second locking mechanism, which is arranged on the folding seat body 71 and is capable of locking the position of the linkage structure 8 relative to the front foot rod 1 at a second locking position, and releasing the movement restriction of the linkage structure 8 relative to the front foot rod 1 at a second unlocking position. The second locking mechanism can further achieve a stable supporting effect on the seat structure 3 and the rear foot rod 2 respectively through the seat support rod 82 and the rear foot support rod 83 by locking the position of the linkage structure 8 relative to the front foot rod 1 at the second locking position. When the second locking mechanism is adjusted to the second unlocking position, the movement of the linkage structure 8 relative to the front foot rod 1 is no longer restricted, so that the folding and folding of the seat structure 3, the front foot rod 1 and the rear foot rod 2 can be achieved.

[0058] refer to Figure 7-Figure 9 In some embodiments, the second locking mechanism includes a first hook body 96, a second hook body 97 and a linkage component 94, wherein the second hook body 97 is fixed to a side of the sliding sleeve 81 adjacent to the folding seat body 71. The first hook body 96 is disposed on the folding seat body 71 and has a hook head portion that cooperates with the second hook body 97. The linkage component 94 is connected to the handle seat body 72 and is connected to the first hook body 96 through a second pull rope 95. The linkage component 94 can drive the hook head portion of the first hook body 96 to disengage from the hooking position of the second hook body 97 through the second pull rope 95 when the handle seat body 72 rotates a preset angle relative to the folding seat body 71.

[0059] exist Figure 7 In the embodiment, the middle part of the linkage component 94 can be pivotally connected to the outside of the folding seat body 71, and a through hole 71d is provided on the folding seat body 71, so that one end of the linkage component 94 is embedded in the through hole 71d and is rotatably connected or abutted with the handle seat body 72, and the other end is connected to one end of the second pull rope 95, so that when the handle seat body 72 rotates relative to the folding seat body 71, the linkage component 94 can be driven to rotate around the pivot, and the second pull rope 95 can be driven to move to pull the first hook body 96. A housing 71e can be provided on the outside of the linkage component 94, and is installed on the outer wall of the folding seat body 71 by screws or bolts.

[0060] The middle part of the first hook body 96 can be pivotally connected to one end of the folding seat body 71 adjacent to the sliding sleeve 81, and the hook head of the first hook body 96 can extend outward relative to the folding seat body 71 and can be hooked with the second hook body 97 arranged between the paired sliding sleeves 81a and 81b. A torsion spring 97 can also be arranged on the first hook body 96 so that the first hook body 96 can maintain the position of hooking the second hook body 97 as much as possible. When the first hook body 96 is pulled by the second pull rope 95 and overcomes the elastic force of the torsion spring 97, the hook head of the first hook body 96 can be separated from the hooking position of the second hook body 97. When the second pull rope 95 is loosened, the first hook body 96 can be reset to the position of hooking the second hook body 97 under the action of the torsion spring 97. A housing 71f can be arranged on the outside of the first hook body 96 and installed on the outer wall of the folding seat body 71 by screws or bolts.

[0061] refer to Figure 5 and Figure 6 In some embodiments, the folding structure 7 further includes a folding elastic assisting structure. The folding elastic assisting structure is disposed between the handle seat body 72 and the rear foot seat body 73, and is used to provide a driving force for relative twisting between the handle seat body 72 and the rear foot seat body 73 when the first locking mechanism is located at the first unlocking position, so as to assist the handle bar 4 and the rear foot bar 2 to fold toward each other.

[0062] exist Figure 6 In the embodiment, the folding elastic assist structure may include a protrusion 73c and a torsion spring 72d. The protrusion 73c is arranged outside the sleeve connector 73a between the rear foot seat body 73 and the rear foot rod 2, one end of the torsion spring 72d is fixedly connected to the handle seat body 72, and the other end abuts against or is connected to the protrusion 73c. ​​In this way, under the action of the torsion spring 72d, the handle seat body 72 connected to the handle bar 4 has a tendency to fold relative to the rear foot seat body 73 connected to the rear foot rod 2, so that the user can save more effort when folding the frame.

[0063] in addition, Figure 5 A protruding baffle 72f is also provided on one side of the sleeve connector 72a adjacent to the sleeve connector 73a, which can resist and cooperate with the step surface on the sleeve connector 73a, thereby limiting the axial position of the sleeve connector 72a through the sleeve connector 73a. A protruding structure 72g is also provided at the position of the sleeve connector 72a corresponding to the protrusion 73c, and the protruding structure 72g can limit the rotation direction of the protrusion 73 by blocking the protrusion 73, so that it cannot be folded in the reverse direction.

[0064] The above-mentioned embodiments of the baby stroller frame can be applied to various types of baby strollers. Therefore, the present disclosure also provides a baby stroller, including any of the above-mentioned embodiments of the baby stroller frame. The baby stroller is more convenient in folding and folding, and is easy for parents to operate.

[0065] The following will be combined Fig.10 (a)- Fig.10 (e) An example of the folding and stowing process of a baby stroller frame is described.

[0066] exist Fig.10 In (a), when the baby stroller needs to be folded, the user can press the unlocking key located on the handlebar upper tube with the palm or finger to release the lock of the rotating joint of the handlebar rod by the joint locking mechanism, and then follow the Fig.10 Press the handlebar upper tube downward in the direction of the arrow in (a) to rotate the handlebar upper tube to Fig.10 (b) The lock between the handlebar body and the folding body is released, and the user can move the handlebar lower tube along Fig.10 (b) is folded forward. At this time, the seat bar and the backrest bar are both folded forward, and the two side armrest bar sections in the side armrest bar are folded with each other, while the front foot bar and the rear foot bar can still maintain the same stable support angle as when the frame is in the unfolded state.

[0067] When the handlebar lower tube continues to fold forward in the direction of the arrow, the second locking mechanism gradually reaches the unlocking position during the folding process. At this time, the hook head of the first hook body is separated from the hooking position of the second hook body, so that the sliding sleeve moves along the front foot rod toward the front wheel assembly during the folding process, and drives the seat rod and the rear foot rod to move closer to the front foot rod, and reaches Fig.10 (d) At this time, the handlebar, seat bar, backrest bar, front foot bar and rear foot bar are gradually folded to one side, and continue to fold until Fig.10 (e) and then the relative positions of the rear foot rod and the handlebar rod can be fixed by folding the fixing parts.

[0068] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0069] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A baby stroller frame, characterized in that: include: A front foot rod (1), a rear foot rod (2), a seat structure (3), a handlebar (4), a front wheel group (5), a rear wheel group (6), a folding structure (7), a linkage structure (8), a first locking mechanism and an unlocking structure, wherein the front wheel group (5) is arranged at a first end of the front foot rod (1), the rear wheel group (6) is arranged at a first end of the rear foot rod (2), the seat structure (3) is connected to the handlebar (4), and the folding structure (7) is connected to the second end of the front foot rod (1) and the rear foot rod The second end of the front foot rod (2) is connected to the handlebar (4) to realize the rotational connection between the second end of the front foot rod (1), the second end of the rear foot rod (2) and the handlebar (4); the linkage structure (8) is arranged between the seat structure (3), the front foot rod (1) and the rear foot rod (2) to drive the front foot rod (1) and the rear foot rod (2) to fold towards each other when the seat structure (3) is driven by the handlebar (4) to move towards the front foot rod (1); The linkage structure (8) comprises: a sliding sleeve (81), which is sleeved on the front foot rod (1) and connected to the seat structure (3) and / or the rear foot rod (2) via a connecting member, and is capable of moving along the front foot rod (1) toward the front wheel assembly (5), and drives the seat structure (3) and / or the rear foot rod (2) to fold toward the front foot rod (1) via the connecting member; The folding structure (7) comprises: a folding seat body (71), a handle seat body (72) and a rear foot seat body (73); the handle seat body (72) and the rear foot seat body (73) are respectively connected to the handle bar (4) and the rear foot bar (2), and are both rotatably mounted on the folding seat body (71); the first locking mechanism is arranged between the folding seat body (71) and the handle seat body (72), and is used to maintain a relatively fixed relationship between the folding seat body (71) and the handle seat body (72) in a first locking position; the unlocking structure is arranged on the handle bar (4) and is connected to the first locking mechanism via a first pull rope (93); the handle bar (4) comprises a handle upper tube (43), a handle lower tube (41) and a rotating joint (93) arranged between the handle upper tube (43) and the handle lower tube (41); 42), the handlebar lower tube (41) is connected to the handlebar seat body (72) and is rotatably mounted on the folding seat body (71), the unlocking structure comprising: a joint locking mechanism, an unlocking key and a linkage unlocking member, the joint locking mechanism is arranged on the rotating joint (42) and can lock the rotational position between the handlebar upper tube (43) and the handlebar lower tube (41), the unlocking key is located on the handlebar upper tube (43) and can unlock the joint locking mechanism when triggered externally, the linkage unlocking member is arranged on the rotating joint (42) and is connected to the first pull rope (93), and can move the first locking mechanism from the first locking position to the first unlocking position through the first pull rope (93) when the handlebar upper tube (43) is rotated to a preset angle position relative to the handlebar lower tube (41).

2. The baby carriage frame according to claim 1, characterized in that: The seat structure (3) comprises: a side armrest rod (31) and a seat rod (32); the side armrest rod (31) comprises at least two connected side armrest rod sections (31a, 32b); two ends of the side armrest rod (31) are respectively connected to the seat rod (32) and the handlebar rod (4); when the handlebar rod (4) and the front foot rod (1) are folded toward each other, the at least two side armrest rod sections (31a, 32b) can be driven to fold toward each other.

3. The baby carriage frame according to claim 2, characterized in that: The seat structure (3) further comprises: a backrest rod (33) rotatably connected to the seat rod (32) and connected to the handlebar rod (4) or the side armrest rod (31), and capable of rotating relative to the seat rod (32) driven by the handlebar rod (4) or the side armrest rod (31) to achieve folding of the backrest rod (33) and the seat rod (32) towards each other or unfolding in the opposite direction.

4. The baby stroller frame according to claim 1, characterized in that: The linkage structure (8) further comprises: a seat support rod (82) and a rear foot support rod (83); the two ends of the seat support rod (82) are rotatably connected to the seat structure (3) and the sliding sleeve (81), respectively; the two ends of the rear foot support rod (83) are rotatably connected to the sliding sleeve (81) and the rear foot rod (2), respectively; the seat support rod (82) serves as a connecting member between the seat structure (3) and the sliding sleeve (81), and is capable of driving the seat structure (3) to fold toward a side close to the front foot rod (1) or to unfold toward a side away from the front foot rod (1); the rear foot support rod (83) serves as a connecting member between the rear foot rod (2) and the sliding sleeve (81), and is capable of driving the rear foot rod (2) to fold toward a side close to the front foot rod (1) or to unfold toward a side away from the front foot rod (1).

5. The baby carriage frame according to claim 4, characterized in that: The front foot rod (1) is a double-rod structure, the sliding sleeve (81) comprises a pair of sliding sleeves (81a, 81b) respectively sleeved on the double-rod structure, and the seat support rod (82) and the rear foot support rod (83) are both pivotally connected between the pair of sliding sleeves (81a, 81b).

6. The baby carriage frame according to claim 4, characterized in that: The rear foot rod (2) comprises a first rear foot rod (2a) and a second rear foot rod (2b) respectively connected to two groups of rear wheels in the rear wheel group (6); the rear foot support rod (83) comprises a cross rod (83b) and a connecting rod (83a); the cross rod (83b) is rotatably connected between the first rear foot rod (2a) and the second rear foot rod (2b); and the connecting rod (83a) is connected between the sliding sleeve (81) and the cross rod (83b).

7. The baby carriage frame according to claim 1, characterized in that: The first locking mechanism comprises a toothed part (91) and a first spring (92); the folding seat body (71) and the handle seat body (72) are both provided with a toothed structure capable of engaging with the toothed part (91); the toothed part (91) and the first spring (92) are both arranged between the folding seat body (71) and the handle seat body (72); the toothed part (91) is connected to the first pull rope (93) and can reach the first unlocking position under the pulling of the first pull rope (93) and disengage from the toothed structure of the folding seat body (71); the toothed part (91) can also be reset to the first locking position under the action of the first spring (92) and engage with the toothed structures of the folding seat body (71) and the handle seat body (72) at the same time.

8. The baby stroller frame according to claim 1, characterized in that: The folding seat body (71) is fixedly connected to the front foot rod (1), and the baby carriage frame further comprises a second locking mechanism, which is arranged on the folding seat body (71) and is capable of locking the position of the linkage structure (8) relative to the front foot rod (1) at a second locking position, and releasing the movement restriction of the linkage structure (8) relative to the front foot rod (1) at a second unlocking position.

9. The baby carriage frame according to claim 8, characterized in that: The linkage structure (8) comprises a sliding sleeve (81) sleeved on the front foot rod (1); the sliding sleeve (81) is connected to the seat structure (3) and / or the rear foot rod (2) via a connecting piece, and is capable of moving along the front foot rod (1) toward the front wheel assembly (5), and driving the seat structure (3) and / or the rear foot rod (2) to fold toward the front foot rod (1) via the connecting piece; the second locking mechanism comprises a first hook body (96), a second hook body (97) and a linkage component (94); the second hook body (97) is fixed to the sliding sleeve (81) adjacent to the front foot rod (1). On one side of the folding seat (71), the first hook body (96) is arranged on the folding seat (71) and has a hook head portion cooperating with the second hook body (97); the linkage component (94) is connected to the handle seat (72) and is connected to the first hook body (96) through a second pull rope (95); when the handle seat (72) is rotated by a preset angle relative to the folding seat (71), the linkage component (94) can drive the hook head portion of the first hook body (96) to disengage from the hooking position of the second hook body (97) through the second pull rope (95).

10. The baby stroller frame according to claim 1, characterized in that: The folding structure (7) further comprises a folding elastic assist structure, which is arranged between the handle seat body (72) and the rear foot seat body (73) and is used to provide a driving force for relative twisting between the handle seat body (72) and the rear foot seat body (73) when the first locking mechanism is located at the first unlocking position, so as to assist the handle bar (4) and the rear foot bar (2) to fold towards each other.

11. The baby carriage frame according to claim 10, characterized in that: The folding elastic assist structure comprises a protrusion (73c) and a torsion spring (72d); the protrusion (73c) is arranged outside a sleeve connector (73a) between the rear foot seat body (73) and the rear foot rod (2); one end of the torsion spring (72d) is fixedly connected to the handle seat body (72), and the other end abuts against or is connected to the protrusion (73c).

12. A baby stroller, characterized in that: The invention comprises a baby carriage frame as claimed in any one of claims 1 to 11.

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