A baby stroller frame and a baby stroller

Abstract

The present invention belongs to the technical field of infant carriers, and discloses a baby carriage frame and a baby carriage, which comprises the above-mentioned baby carriage frame and a seat; the baby carriage frame comprises a front wheel rod, a rear wheel rod and a push rod, the front wheel rod, the rear wheel rod and the push rod are coaxially pivoted to a rotating shaft, a sliding sleeve capable of sliding along the axial direction of the push rod is arranged on the push rod, and the sliding sleeve has a locking position close to the rotating shaft and an unlocking position away from the rotating shaft; the baby carriage frame also comprises a seat body, a first support rod, a second support rod and a third support rod pivoted in series, wherein: an end of the seat body away from the first support rod is pivoted to the push rod, and the pivot, the rotating shaft and the sliding sleeve of the seat body and the push rod are sequentially arranged along the axial direction of the push rod; the pivots of the first support rod and the second support rod are arranged at the middle section of the front wheel rod; the middle section of the third support rod is pivoted to the rear wheel rod, and an end of the third support rod away from the second support rod is pivoted to the sliding sleeve. The baby carriage frame provided by the present invention can make the seat body folded together with the front wheel rod, the rear wheel rod and the push rod, and the folding process is simple and quick.

Description

Technical Field

[0001] The present invention relates to the technical field of baby carriers, and in particular to a baby carriage frame and a baby carriage. Background Art

[0002] A baby stroller frame generally includes a front wheel bar for mounting a front wheel, a rear wheel bar for mounting a rear wheel, and a push rod suitable for a caregiver to grasp and push. One or more of the three are combined to fix a seat to be suitable for a baby to sit on.

[0003] In order to facilitate storage and transportation, the front wheel rod, rear wheel rod and push rod are generally pivotally connected by a connecting rod to form a foldable structure so that the three can fit closely together. The seat needs to be disassembled and placed independently before folding, making the folding and unfolding operations of the baby stroller frame not simple enough.

[0004] Therefore, the above problems need to be solved urgently. Summary of the invention

[0005] An object of the present invention is to provide a baby carriage frame and a baby carriage, so as to simplify the folding operation of the baby carriage frame.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A baby carriage frame, comprising a front wheel rod, a rear wheel rod and a push rod, wherein the front wheel rod, the rear wheel rod and the push rod are coaxially pivoted to a rotating shaft, the push rod is provided with a sliding sleeve capable of sliding along the axial direction of the push rod, the sliding sleeve having a locking position close to the rotating shaft and an unlocking position away from the rotating shaft; the baby carriage frame also comprises a seat body, a first support rod, a second support rod and a third support rod pivotally connected in series, wherein:

[0008] One end of the seat body away from the first support rod is pivotally connected to the push rod, and the seat body and the pivot of the push rod, the rotating shaft and the sliding sleeve are sequentially arranged along the axial direction of the push rod;

[0009] The pivots of the first support rod and the second support rod are arranged at the middle section of the front wheel rod;

[0010] The middle section of the third support rod is pivotally connected to the rear wheel rod, and one end of the third support rod facing away from the second support rod is pivotally connected to the sliding sleeve.

[0011] Preferably, one end of the third support rod pivotally connected to the second support rod is bent toward the rotating shaft.

[0012] Preferably, the pivotal connection between the seat body and the push rod is located on the inner side of the baby carriage frame compared to the pivotal connection between the seat body and the first support rod.

[0013] Preferably, the seat body is configured to remain in a horizontal posture when the sliding sleeve is in the locked position.

[0014] Preferably, the seat body is pivotally connected to the push rod via a support extending outward from the bottom thereof, and a relief portion is formed between the support and the bottom surface of the seat body to prevent the push rod from flipping over.

[0015] Preferably, the baby carriage frame further comprises a push handle, which comprises a handle and a pull rod connected to each other, and the pull rod is slidably sleeved with the push rod.

[0016] Preferably, the baby carriage frame further comprises a first locking device, wherein the first locking device is configured to lock or unlock the sliding sleeve and the push rod so that the sliding sleeve has the locking position and the unlocking position.

[0017] A baby carriage comprises the above-mentioned baby carriage frame and a seat detachably mounted on the baby carriage frame.

[0018] Preferably, the seat includes a second locking device, and a seat cushion, armrests and backrest that are coaxially pivoted, and the second locking device is configured to allow the seat cushion, the armrests and the backrest to be folded when unlocked, and to keep the seat cushion, the armrests and the backrest in an unfolded state when locked.

[0019] Preferably, the seat further comprises a roof, wherein the roof comprises a front roof bar and a rear roof bar, wherein the front roof bar and the rear roof bar are pivotally connected to the seat so as to be foldable to be attached to the seat.

[0020] Beneficial effects of the present invention:

[0021] When the baby carriage frame provided by the present invention is folded, the unlocked sliding sleeve is driven by the downwardly pressed push rod to pull the first support rod, the second support rod and the third support rod in a linked manner, so that the front wheel rod and the rear wheel rod are folded together with the push rod. At the same time, the pivotal connection structure between the first support rod, the second support rod and the third support rod and the seat body, the front wheel rod, the rear wheel rod and the push rod can make the seat body fold together with the front wheel rod, the rear wheel rod and the push rod during folding, so that the folding process of the baby carriage frame is simple and quick.

[0022] When the baby carriage frame needs to be unfolded again, an external force is applied to the push rod to pull the push rod away from the rear wheel rod, so that the baby carriage frame can be gradually unfolded. When the sliding sleeve slides to the locking position and is locked, the unfolding action is completed.

[0023] By means of the above structure, the baby carriage frame can be folded together with the seat installed thereon when it is folded, that is, there is no need to remove the seat separately, so that the folding process of the baby carriage is simple and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of a baby stroller in an unfolded state according to an embodiment of the present invention;

[0025] Figure 2 It is a schematic diagram of the disassembly structure of the baby stroller frame and the seat in the embodiment of the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the seat, the canopy and the push handle in a semi-folded state of the baby stroller in the embodiment of the present invention;

[0027] Figure 4A It is one of the schematic diagrams of the structure of the baby stroller in a semi-folded state in the embodiment of the present invention;

[0028] Figure 4B It is the second schematic diagram of the structure of the baby stroller in a semi-folded state in the embodiment of the present invention;

[0029] Figure 5A It is one of the schematic diagrams of the structure of the baby stroller in a folded state in the embodiment of the present invention;

[0030] Figure 5B It is the second schematic diagram of the structure of the baby stroller in a folded state in the embodiment of the present invention.

[0031] In the figure:

[0032] 100, baby stroller frame; 200, seat; 1, front wheel rod; 2, rear wheel rod; 3, push rod; 4, seat body; 41, support; 5, first strut; 6, second strut; 7, third strut; 8, sliding sleeve; 9, rotating shaft; 10, first pin; 11, second pin; 12, third pin; 13, fourth pin; 14, fifth pin; 15, sixth pin; 16, seat cushion; 17, armrest; 18, backrest; 19, canopy; 191, front canopy rod; 192, rear canopy rod; 193, damping shaft; 20, push handle; 201, handle; 202, pull rod; 21, footrest; 22, front wheel; 23, rear wheel. Detailed implementation manners

[0033] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. Additionally, it should be noted that for the sake of description, only parts related to the present invention are shown in the drawings rather than all the structures.

[0034] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present invention, unless otherwise clearly specified or limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the contact between the first and second features not directly but through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0036] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0037] Please refer to Figure 1 and Figure 2 This embodiment provides a foldable baby carriage, which can be unfolded for infants and young children to ride or folded to reduce the space it occupies. It includes a baby carriage frame 100, and the baby carriage frame 100 includes a front wheel rod 1, a rear wheel rod 2, a push rod 3, a seat body 4, a first strut 5, a second strut 6 and a third strut 7.

[0038] Among them, the front wheel rod 1 and the rear wheel rod 2 are respectively located at the front side and the rear side of the baby carriage, and are respectively used for installing the front wheel and the rear wheel 23 of the baby carriage. The push rod 3 extends towards the rear side of the baby carriage to be suitable for a caregiver to support the baby carriage frame 100 and push the baby carriage frame 100 forward. The front wheel rod 1, the rear wheel rod 2 and the push rod 3 are coaxially pivotally connected to a rotating shaft 9 so as to be able to rotate around the rotating shaft 9 when the baby carriage frame 100 is folded or unfolded.

[0039] A sliding sleeve 8 is arranged on the above-mentioned push rod 3. The sliding sleeve 8 can slide along the axial direction of the push rod 3. As the sliding position changes, the sliding sleeve 8 has a locking position close to the rotating shaft 9 and an unlocking position away from the rotating shaft 9. The locking position can keep the front wheel rod 1, the rear wheel rod 2 and the push rod 3 in the unfolded state, while the unlocking position is suitable for the relative rotation and folding of the front wheel rod 1, the rear wheel rod 2 and the push rod 3. The above-mentioned folding and unfolding actions are provided by a foldable pivot structure formed between the seat body 4, the first strut 5, the second strut 6, the third strut 7 and the front wheel rod 1, the rear wheel rod 2 and the push rod 3.

[0040] Please continue to refer to Figure 1 andFigure 2 , the above-mentioned hinge structure is specifically as follows:

[0041] The seat body 4 , the first support rod 5 , the second support rod 6 and the third support rod 7 are pivotally connected in series in sequence through the first pin 10 , the second pin 11 and the third pin 12 .

[0042] One end of the seat body 4 facing away from the first support rod 5 is pivoted to the push rod 3 through the fourth pin 13, and the fourth pin 13, the rotating shaft 9 and the sliding sleeve 8 are arranged in sequence along the axial direction of the push rod 3; the pivot of the first support rod 5 and the second support rod 6, that is, the second pin 11 is arranged at the middle section of the front wheel rod 1; the middle section of the third support rod 7 is pivoted to the rear wheel rod 2 through the fifth pin 14, and the end of the third support rod 7 facing away from the second support rod 6 is pivoted to the sliding sleeve 8 through the sixth pin 15.

[0043] like Figure 1 , Figure 2 As shown, the sliding sleeve 8 is in a locked position, and the seat body 4, the first support rod 5, the second support rod 6 and the third support rod 7, the front wheel rod 1, the rear wheel rod 2 and the push rod 3 are restrained and fixed to each other, so that the baby carriage frame 100 remains in an unfolded state, ensuring the safety of the baby carriage when it is parked and pushed forward.

[0044] Please refer to 4A and 4B together. When the baby carriage frame 100 needs to be folded, the slide sleeve 8 is unlocked to disengage the slide sleeve 8 from the locked position, and an external force is applied to the push rod 3 toward the rear wheel rod 2 to slide the slide sleeve 8 from the locked position to the unlocked position. The slide sleeve 8 can pull the first support rod 5, the second support rod 6 and the third support rod 7 in a linked manner, so that the front wheel rod 1 and the rear wheel rod 2 are folded together with the pushed-down push rod 3. At the same time, in the structure of the baby stroller frame 100, the seat body 4 itself constitutes a first link, the portion of the push rod 3 located between the fourth pin 13 and the rotating shaft 9 constitutes a second link pivotally connected to the first link, the portion of the front wheel rod 1 located between the rotating shaft 9 and the second pin 11 constitutes a third link pivotally connected to the second link, and the first support rod 5 constitutes a fourth link pivotally connected between the first link and the third link. The four-bar mechanism formed by the first link, the second link, the third link and the fourth link can enable the seat body 4 to be folded together with the front wheel rod 1, the rear wheel rod 2 and the push rod 3 during folding, until the baby stroller frame 100 is completely folded to the position as shown in the figure. Figure 5A and 5B Shown in the folded state.

[0045] When the baby carriage frame 100 needs to be unfolded again, an external force is applied to the push rod 3 to pull the push rod 3 away from the rear wheel rod 2, so that the baby carriage frame 100 can be gradually unfolded. When the sliding sleeve 8 slides to the locking position and is locked, the unfolding action is completed.

[0046] With the above structure, the baby carriage frame 100 can be folded together with the seat 200 installed thereon when the baby carriage frame 100 is folded, that is, there is no need to remove the seat 200 separately, making the folding process of the baby carriage simple and quick.

[0047] It is understandable that the baby carriage frame 100 includes a first locking device, which is configured to lock or unlock the sliding sleeve 8 and the push rod 3, so that the sliding sleeve 8 has the above-mentioned locked position and unlocked position. Specifically, the first locking device disposed between the sliding sleeve 8 and the push rod 3 can adopt an elastic locking pin, a quick buckle, a wedge-shaped locking sleeve and other active locking devices commonly used in baby carriages. The first locking device is not an improvement point of the present application, so it will not be specifically described or limited here.

[0048] At the same time, it can be understood that the seat 200 of the baby stroller can be a foldable structure fixedly connected to the seat body 4. When the baby stroller frame 100 is folded, the seat 200 flips over with the seat body 4. When the seat 200 structure conflicts with other parts of the baby stroller frame 100 during folding, it is folded together with the baby stroller frame 100, or the caregiver can fold the foldable seat 200 separately until it is attached to the folded baby stroller frame 100.

[0049] For details, please refer to Figure 1 , Figure 3 , Figure 4A and Figure 5A The seat 200 may include a seat cushion 16, an armrest 17 and a backrest 18 which are coaxially pivoted. The seat cushion 16 is connected to the seat body 4 and is formed into a shape suitable for infants to sit on. The armrests 17 are arranged on both sides of the seat cushion 16 or form a ring structure to be suitable for infants to support. The backrest 18 is formed into a shape suitable for infants to lean on. When the seat 200 is folded together with the baby carriage frame 100, the armrests 17 and the backrest 18 are rotated and folded toward the seat cushion 16 until they are attached to the seat cushion 16 to reduce the volume.

[0050] Optionally, the seat 200 may include a second locking device configured to allow the seat cushion 16, the armrest 17 and the backrest 18 to be folded when unlocked, and to keep the seat cushion 16, the armrest 17 and the backrest 18 in an unfolded state when locked.

[0051] Optionally, the seat 200 may also include a roof 19, which may include a front roof rod 191 and a rear roof rod 192, and the front roof rod 191 and the rear roof rod 192 may be pivotally connected to the top of the backrest 18 of the seat 200 so that the roof 19 can also be folded to be attached to the seat 200.

[0052] Among them, the second locking device may include an unlocking button disposed on the outer side of the seat 200, and structures such as ratchet locks disposed on the pivots of the seat cushion 16, the armrest 17, and the backrest 18 to achieve the purpose of locking or unlocking the seat cushion 16, the armrest 17, and the backrest 18. Similar to the first locking device, the second locking device is not an improvement point of this application, so no specific elaboration or limitation will be made here. The pivots of the front awning rod 191 and the rear awning rod 192 can adopt structures such as a damping shaft 193 to maintain their relative positions.

[0053] For the convenience of the caregiver to hold, the baby stroller 100 further includes a push handle 20. The push handle 20 includes a handle 201 suitable for hand holding. The handle 201 can be directly fixed to the push rod 3 or connected to the push rod 3 through a pull rod 202. The pull rod 202 can be slidably sleeved on the push rod 3, so as to be suitable for adjusting the height position of the push handle 20. The push rod 3 and the push handle 20 can adopt a common telescopic sleeve structure, which will not be elaborated here.

[0054] In addition, the seat 200 can be detachably connected to the seat body 4. For example, a symmetrical fastening structure that allows the seat 200 to be turned around front and back can be provided between the two, so that the infant can sit in the stroller facing forward or facing the caregiver. Correspondingly, footrests 21 suitable for the infant to step on can be provided on both the front wheel rod 1 and the rear wheel rod 2.

[0055] In this embodiment, the pivoting joint of the seat body 4 and the push rod 3 is located inside the baby stroller 100 compared with the pivoting joint of the seat body 4 and the first strut 5. That is, during the folding process of the baby stroller 100, the seat body 4 can be turned outward together with the seat 200 installed on the seat body 4, which is suitable for the comfortable seat 200 with a relatively large space occupation such as the seat cushion 16, the armrest 17, and the backrest 18.

[0056] Furthermore, the seat body 4 is pivotally connected to the push rod 3 through a support 41 extending outward from its bottom. An avoidance portion for avoiding the flipping of the push rod 3 is formed between the support 41 and the bottom surface of the seat body 4.

[0057] In other alternative embodiments, the seat 200 of the stroller can also be made of flexible woven fabric or the like, so that the space occupation after the seat 200 is folded can be small. That is, the pivoting joint of the seat body 4 and the push rod 3 can be located outside the baby stroller 100 compared with the pivoting joint of the seat body 4 and the first strut 5, and the length of the first strut 5 can be appropriately extended. Thus, when the baby stroller 100 is folded, the seat body 4 can be turned inward together with the flexible seat 200 installed on the seat body 4, further reducing the space occupation after the entire stroller is folded.

[0058] Preferably, the seat body 4 is configured to maintain a horizontal posture when the sliding sleeve 8 is in the locked position. When the sliding sleeve 8 is in the locked position, the baby stroller is in the unfolded state, that is, when the baby stroller is in the unfolded state, the seat body 4 can provide a substantially horizontal bearing surface for the infant. Specifically, the above object can be achieved by adjusting parameters such as the rod positions of the first strut 5 and the seat body 4, and the length of the support 41.

[0059] In this embodiment, one end of the third strut 7 pivotally connected to the second strut 6 is bent towards the rotating shaft 9. Please refer to Figure 4A and Figure 5A . When the baby stroller 100 is folded, the third strut 7 will rotate in the clockwise direction in Figure 4A and pull the second strut 6 to fold towards the rotating shaft 9, so that when the baby stroller 100 is folded, the second strut 6 together with the first strut 5 and the part of the third strut 7 close to the second strut 6 are accommodated inside the baby stroller, avoiding being exposed outside and reducing potential safety hazards.

[0060] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A baby stroller, comprising a front wheel rod (1), a rear wheel rod (2) and a push rod (3), characterized in that, The front wheel rod (1), the rear wheel rod (2) and the push rod (3) are coaxially pivotally connected to a rotating shaft (9). A sliding sleeve (8) capable of sliding axially along the push rod (3) is arranged on the push rod (3). The sliding sleeve (8) has a locking position close to the rotating shaft (9) and an unlocking position away from the rotating shaft (9). The baby stroller further includes a seat body (4), a first support rod (5), a second support rod (6) and a third support rod (7) which are pivotally connected in series, wherein: One end of the seat body (4) facing away from the first support rod (5) is pivotally connected to the push rod (3), and the pivot axis of the seat body (4) and the push rod (3), the rotating shaft and the sliding sleeve (8) are arranged in sequence along the axial direction of the push rod (3); The pivot axis of the first support rod (5) and the second support rod (6) is arranged at the middle section of the front wheel rod (1); The middle section of the third support rod (7) is pivotally connected to the rear wheel rod (2), and one end of the third support rod (7) facing away from the second support rod (6) is pivotally connected to the sliding sleeve (8); One end of the third support rod (7) pivotally connected to the second support rod (6) is bent towards the rotating shaft (9); The pivot connection between the seat body (4) and the push rod (3) is located inside the baby stroller compared with the pivot connection between the seat body (4) and the first support rod (5); The pivot connection structures between the first support rod (5), the second support rod (6) and the third support rod (7) and the seat body (4), the front wheel rod (1), the rear wheel rod (2) and the push rod (3) can enable the seat body (4) to be folded together with the front wheel rod (1), the rear wheel rod (2) and the push rod (3) during folding, making the folding process of the baby stroller simple and fast.

2. The baby stroller according to claim 1, wherein, The seat body (4) is configured to maintain a horizontal posture when the sliding sleeve (8) is in the locking position.

3. The baby stroller according to claim 1, characterized in that, The seat body (4) is pivotally connected to the push rod (3) through a support (41) extending outward from its bottom. An avoidance portion for avoiding the flipping of the push rod (3) is formed between the support (41) and the bottom surface of the seat body (4).

4. The baby stroller according to claim 1, wherein, The baby stroller further includes a push handle (20). The push handle (20) includes a handle (201) and a pull rod (202) connected to each other. The pull rod (202) is slidably sleeved on the push rod (3).

5. The baby stroller according to claim 1, characterized in that, The baby stroller further includes a first locking device configured to lock or unlock the sliding sleeve (8) and the push rod (3) so that the sliding sleeve (8) has the locking position and the unlocking position.

6. A baby stroller, characterized in that, Including the baby stroller (100) according to any one of claims 1-5.

7. The stroller according to claim 6, characterized in that, The baby stroller further includes a seat (200) detachably mounted on the seat body (4). The seat (200) includes a second locking device and a seat cushion (16), an armrest (17) and a backrest (18) pivotally connected coaxially. The second locking device is configured to allow the seat cushion (16), the armrest (17) and the backrest (18) to be folded when unlocked and keep the seat cushion (16), the armrest (17) and the backrest (18) in the unfolded state when locked.

8. The stroller according to claim 7, wherein, The seat (200) further includes a roof (19), the roof (19) includes a front roof bar (191) and a rear roof bar (192), and the front roof bar (191) and the rear roof bar (192) are pivotally connected to the seat (200) so as to be foldable to attach to the seat (200).

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