Sitting posture adjustable baby carriage

Abstract

The utility model discloses a sitting posture adjustable baby carriage, and relates to the field of baby products, the sitting posture adjustable baby carriage comprises a carriage frame and a seat, the seat comprises a seat part and a backrest part, and a rotary hinge point is arranged between the backrest part and the carriage frame; a distance margin is reserved between a rotary hinge point between the backrest part and the frame and a hinge point between the seat part and the backrest part; the seat is provided with a rotary adjusting structure, and the rotary adjusting structure can limit relative rotation between the backrest part and the frame; the seat part is hinged to the backrest part, a telescopic rod is connected between the seat part and the frame, the two ends of the telescopic rod are connected with the seat part and the frame respectively, one end of the telescopic rod is a fixed end, and the other end of the telescopic rod is a hinged end. The position of the seat is high when the seat is in a lying use state, so that parents can take care of a baby conveniently.

Description

Technical Field

[0001] The present application relates to the field of baby products, and in particular to a baby stroller with adjustable sitting position. Background Art

[0002] A baby stroller is a tool vehicle designed for babies. It provides great convenience for parents to take their babies out for shopping or outdoor activities.

[0003] Some baby strollers can adjust the angle between the backrest and the seat, so that the baby stroller can be adjusted to the baby's body posture when sitting up or lying down as needed. Usually, when the baby stroller is adjusted to a lying position, the baby's body height will be significantly lowered. In this case, it is inconvenient for parents to take care of the baby, and the smoke and dust raised by the road are more likely to affect the baby's health. Summary of the invention

[0004] In order to solve the problem that when a baby stroller capable of adjusting the baby's sitting position is switched to a lying position, the baby's body height is significantly lowered, the present application provides a baby stroller with an adjustable sitting position.

[0005] The present application provides a baby stroller with adjustable sitting position, which adopts the following technical solution:

[0006] A baby stroller with adjustable sitting posture, comprising a frame and a seat, the seat comprising a seat and a backrest, a rotation hinge point being provided between the backrest and the frame, a spacing margin being left from the rotation hinge point between the backrest and the frame to the hinge point between the seat and the backrest; the seat is provided with a rotation adjustment structure, the rotation adjustment structure being capable of limiting the relative rotation between the backrest and the frame; the seat is hinged to the backrest, a telescopic rod is connected between the seat and the frame, two ends of the telescopic rod are respectively connected to the seat and the frame, one end of the telescopic rod is a fixed end, and the other end of the telescopic rod is a hinged end.

[0007] By adopting the above technical solution, the relative angle between the backrest of the seat and the frame can be adjusted, and the rotation adjustment structure is used for limiting, so that the seat can switch between different states between lying down or sitting; when the backrest rotates, the backrest drives the seat to change position, and the length of the telescopic rod can be telescopically changed to adapt to the change in position of the seat. In conventional baby strollers, the rotation hinge point of the seat is usually set at the connection between the seat and the backrest. In the present application, the rotation hinge point of the seat is set at the backrest, and because there is a spacing margin from the rotation hinge point between the backrest and the frame to the hinge point between the seat and the backrest, the seat is in a higher position when in a lying state, which is convenient for parents to take care of the baby.

[0008] Optionally, two telescopic rods are provided and are parallel to each other.

[0009] By adopting the above technical solution, when the position of the seat changes with the backrest, the two telescopic rods are telescoped and changed synchronously, and the two telescopic rods are telescoped and changed synchronously, so that the movement of the seat can be more stable and smooth.

[0010] Optionally, the telescopic rod includes a sleeve and a core rod, and the core rod and the sleeve are connected through a threaded connection; one end of the sleeve is threadedly connected to a locking nut, and the locking nut is sleeved on the core rod. The end of the sleeve close to the locking nut is provided with a plurality of notches, and the locking nut can force the end of the sleeve corresponding to the notch to shrink inward to press against the core rod.

[0011] By adopting the above technical solution, when the locking nut is locked, the locking nut can force the end of the sleeve corresponding to the notch to shrink inward and hold the core rod tightly, so that a larger friction damping is formed between the core rod and the sleeve, thereby keeping the length of the telescopic rod stable and allowing the telescopic rod to support the seat.

[0012] Optionally, the inner hole of the locking nut includes an internal thread section and a tapered hole section, and the inner diameter of the tapered hole section gradually decreases in a direction away from the internal thread section.

[0013] By adopting the above technical solution, when the locking nut is locked, the locking nut squeezes the end of the sleeve through the tapered hole section, so that the end of the sleeve shrinks inward and holds the core rod tightly. When the posture of the seat needs to be adjusted, the locking nut is loosened to allow the telescopic rod to be telescopic.

[0014] Optionally, the inner hole of the locking nut further includes a guide section, the guide section is connected to the small end of the tapered hole section, and there is a clearance fit between the guide section and the core rod.

[0015] By adopting the above technical solution, the clearance between the guide section and the core rod is matched, so that the core rod can guide the locking nut, so that the locking nut is easier to align with the end of the sleeve during the locking process and quickly achieve threaded engagement.

[0016] Optionally, the sleeve is provided with an external thread for connecting with a locking nut, and both the external thread and the internal thread of the locking nut are tapered threads.

[0017] By adopting the above technical solution, the internal thread of the locking nut and the external thread on the sleeve are configured as tapered threads, so that the end of the sleeve can be forced to shrink inwards during the locking process of the locking nut.

[0018] Optionally, a connecting piece is connected between the seat and the frame, and a backrest shaft is connected between the connecting piece and the backrest portion; the rotation adjustment structure includes a fan-shaped plate, a bayonet pin and a traction piece, the fan-shaped plate is fixed to the connecting piece, and the hinge center line between the connecting piece and the backrest portion coincides with the curvature center line of the fan-shaped plate; a plurality of pin grooves are provided on the arc side of the fan-shaped plate, the pin grooves are for the bayonet pin to be engaged, and the curvature center lines of the bayonet pin and the fan-shaped plate are parallel to the backrest shaft; the bayonet pin and the backrest portion are slidingly connected along a direction perpendicular to the curvature center line of the fan-shaped plate, a tension spring is connected between the bayonet pin and the backrest shaft, the tension spring is used to force the bayonet pin to enter the pin groove, and the traction piece is used to pull the bayonet pin out of the pin groove.

[0019] By adopting the above technical solution, the engaging pin installed on the backrest is engaged with the pin slot on the sector plate under the action of the tension spring, so that the position of the backrest is restricted. When the angle of the backrest needs to be adjusted, the engaging pin is pulled by the pulling member to make the engaging pin escape from the pin slot, so that the backrest can rotate relative to the connecting member. When the backrest rotates to the desired position, the pulling member is released, so that the engaging pin is engaged with another pin slot under the elastic force of the tension spring, so that the backrest is stabilized at the new position.

[0020] Optionally, it further comprises a footrest portion, wherein two opposite sides of the footrest portion are respectively hinged to the seat portion, and a hinge between the footrest portion and the seat portion has friction damping.

[0021] By adopting the above technical solution, the footrest can be used to support the baby's legs, which is conducive to ensuring the comfort of the baby when sitting up. The angle between the footrest and the seat can be adjusted according to the use state of the seat, and the position of the footrest after the angle adjustment is maintained by friction damping.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. The relative angle between the backrest and the frame of the seat can be adjusted, and the rotation adjustment structure is used to limit the position, so that the seat can switch between different states between lying down or sitting; when the backrest rotates, the backrest drives the seat to change position, and the length of the telescopic rod can be telescoped to adapt to the change in the position of the seat. Since there is a spacing margin from the rotation hinge point between the backrest and the frame to the hinge point between the seat and the backrest, the seat is in a higher position when it is in a lying state, which is convenient for parents to take care of the baby.

[0024] 2. When the locking nut of the telescopic rod is tightened, the locking nut can force the end of the sleeve corresponding to the notch to shrink inward and hold the core rod tightly, so that a larger friction damping is formed between the core rod and the sleeve, thereby keeping the length of the telescopic rod stable and allowing the telescopic rod to support the seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of Example 1.

[0026] Figure 2 It is a schematic diagram of the structure of the seat of Example 1.

[0027] Figure 3 It is a schematic diagram used to reflect the connection relationship between the rotation adjustment structure and the connecting member in Example 1.

[0028] Figure 4 It is a cross-sectional view used to reflect the connection relationship between the rotation adjustment structure and the connecting member in Example 1.

[0029] Figure 5 It is a cross-sectional view used to illustrate the connection relationship between the locking nut and the sleeve in Example 1.

[0030] Figure 6 It is a cross-sectional view used to illustrate the connection relationship between the locking nut and the sleeve in Example 2.

[0031] Description of reference numerals:

[0032] 1. Frame; 2. Seat; 21. Seat; 22. Backrest; 23. Rotation adjustment structure; 231. Fan-shaped plate; 2311. Pin groove; 232. Snap-on pin; 233. Traction piece; 235. Tension spring; 24. Connector; 25. Backrest shaft; 4. Telescopic rod; 401. Fixed end; 402. Articulated end; 41. Sleeve; 411. Notch; 42. Core rod; 43. Locking nut; 431. Internal thread section; 432. Tapered hole section; 433. Guide section; 5. Footrest; 51. Articulated seat; 511. Articulated groove. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-6 This application is described in further detail.

[0034] Example 1

[0035] The present application embodiment discloses a baby stroller with adjustable sitting position. Figure 1The baby stroller with adjustable sitting posture includes a frame 1 and a seat 2, the seat 2 includes a seat 21 and a backrest 22, a rotation hinge point is provided between the backrest 22 and the frame 1, and a spacing margin is left from the rotation hinge point between the backrest 22 and the frame 1 to the hinge point between the seat 21 and the backrest 22; the seat 2 is provided with a rotation adjustment structure 23, and the rotation adjustment structure 23 can limit the relative rotation between the backrest 22 and the frame 1; the seat 21 is hinged with the backrest 22, and two telescopic rods 4 are connected between the seat 21 and the frame 1, the two telescopic rods 4 are parallel to each other, and the two ends of the telescopic rod 4 are respectively connected to the seat 21 and the frame 1, one end of the telescopic rod 4 is fixedly connected to the seat 21, and the other end of the telescopic rod 4 is hinged to the frame 1.

[0036] The relative angle between the backrest 22 of the seat 2 and the frame 1 can be adjusted, and the rotation adjustment structure 23 is used to limit the position, so that the seat 2 can switch between different states between lying down or sitting; when the backrest 22 rotates, the backrest 22 drives the seat 21 to change position, and the length of the telescopic rod 4 can be telescoped to adapt to the position change of the seat 21.

[0037] It is worth mentioning that in this embodiment, the end of the telescopic rod 4 connected to the seat 21 is a fixed end 401, and the end of the telescopic rod 4 connected to the frame 1 is a hinged end 402. In other embodiments, the positions of the fixed end 401 and the hinged end 402 of the telescopic rod 4 can be swapped.

[0038] Reference Figure 2 The seat 2 has a rod frame structure as its main structure, on which a board or cloth material (not shown in this embodiment) is laid, and the board or cloth material is used to cover the gaps in the rod frame structure. When the main body of the seat 2 is in use, the gravity of the baby acts on the rod frame structure through the board or cloth material.

[0039] Reference Figure 3 The telescopic rod 4 includes a sleeve 41 and a core rod 42, and a connection is provided between the core rod 42 and the sleeve 41. One end of the core rod 42 away from the sleeve 41 is fixedly connected to the seat 21, and one end of the sleeve 41 away from the core rod 42 is hinged to the frame 1; one end of the sleeve 41 is threadedly connected with a locking nut 43, and the locking nut 43 is sleeved on the core rod 42. Two symmetrical notches 411 are provided at one end of the sleeve 41 close to the locking nut 43.

[0040] Reference Figure 3 The inner hole of the locking nut 43 includes an internal thread section 431, a tapered hole section 432 and a guide section 433. The large end of the tapered hole section 432 is connected to the thread section, and the small end of the tapered hole section 432 is connected to the guide section 433. The guide section 433 and the core rod 42 are clearance-matched.

[0041] When the locking nut 43 is tightened, the tapered hole section 432 of the inner hole of the locking nut 43 abuts against the end of the sleeve 41, so that the locking nut 43 can force the end of the sleeve 41 corresponding to the notch 411 to shrink inward to abut against the outer circumference of the core rod 42, thereby forming a larger friction damping between the sleeve 41 and the core rod 42, thereby allowing the telescopic rod 4 to maintain a stable length after the length is adjusted.

[0042] Reference Figure 2 , Figure 4 and Figure 5 , two connecting members 24 are connected between the backrest 22 of the seat 2 and the frame 1, a backrest rotation shaft 25 is connected between the connecting member 24 and the backrest 22, and the connecting member 24 is connected to the frame 1 through a hinged connecting rod; the two connecting members 24 are respectively located at two opposite sides of the seat 2; the rotation adjustment structure 23 includes a fan-shaped plate 231, a snap-in pin 232 and a traction member 233, and two fan-shaped plates 231 and snap-in pin 232 are each provided with two, and the two fan-shaped plates 231 correspond to the two connecting members 24 respectively, and the fan-shaped plates 231 are integrally fixed to the corresponding connecting members 24, and the hinge center line between the connecting member 24 and the backrest 22 coincides with the curvature center line of the fan-shaped plate 231; a plurality of equally spaced pin grooves 2311 are provided on the arc side of the fan-shaped plate 231, and the pin grooves 2311 are for the snap-in pin 232 to snap in, and the curvature center lines of the snap-in pin 232 and the fan-shaped plate 231 are both parallel to the backrest rotation shaft 25;

[0043] The two snap-in pins 232 are respectively located on both sides of the backrest 22. The snap-in pins 232 and the backrest 22 are slidingly connected in a direction perpendicular to the centerline of the curvature of the fan-shaped plate 231. A tension spring 235 is connected between the snap-in pin 232 and the backrest shaft 25. The tension spring 235 is used to force the snap-in pin 232 to enter the pin groove 2311. The traction member 233 is a rope, and both ends of the rope are respectively connected to the two snap-in pins 232. The rope can be used to pull the snap-in pin 232 out of the pin groove 2311.

[0044] The engaging pin 232 installed on the backrest 22 is engaged in the pin slot 2311 on the sector plate 231 under the action of the tension spring 235, so that the position of the backrest 22 is restricted. When the angle of the backrest 22 needs to be adjusted, the engaging pin 232 is pulled by the pulling member 233 to make the engaging pin 232 escape from the pin slot 2311, so that the backrest 22 can rotate relative to the connecting member 24. When the backrest 22 rotates to the desired position, the pulling member 233 is released, so that the engaging pin 232 is engaged in another pin slot 2311 under the elastic force of the tension spring 235, so that the backrest 22 is stabilized at the new position.

[0045] Reference Figure 2A foot support 5 is provided on one side of the seat 21 away from the backrest 22. The foot support 5 is a bent rod structure. Both ends of the foot support 5 are respectively hinged with hinge seats 51. The hinge seats 51 are fixedly connected to the seat 21. The hinge seats 51 are provided with upward hinge grooves 511. The end of the foot support 5 is located in the hinge grooves 511. There is friction damping between the foot support 5 and the hinge grooves 511. The hinge grooves 511 can limit the rotation angle of the foot support 5. The foot support 5 can be used to support the feet of the baby, which is conducive to ensuring the comfort of the baby.

[0046] In this embodiment, the sleeve 41 and the core rod 42 of the telescopic rod 4 can slide relative to each other, and one end of the telescopic rod 4 is hinged, so the combined structure of the backrest 22, the seat 21 and the telescopic rod 4 can be equivalent to a crank slider mechanism. When the backrest 22 is fixed at different angles using the rotation adjustment structure 23, the backrest 22, the seat 21 and the telescopic rod 4 are in different postures as a whole, thereby achieving the posture adjustment of the seat 2. In this embodiment, the rotation hinge point of the seat 2 is set at the backrest 22, and because the rotation hinge point between the backrest 22 and the frame 1 and the hinge point between the seat 21 and the backrest 22 leave a spacing margin, the seat 2 is in a higher position when in a lying state, which is convenient for parents to take care of babies and helps to reduce the impact of smoke and dust on the ground on the health of babies.

[0047] Example 2

[0048] The difference between this embodiment and the first embodiment is that the threaded connection structure between the locking nut 43 and the sleeve 41 is different from that in the first embodiment.

[0049] Reference Figure 6 The sleeve 41 is provided with an external thread for connecting the locking nut 43. The external thread and the internal thread of the locking nut 43 are both tapered threads, so that the end of the sleeve 41 can be forced to shrink inward when the locking nut 43 is locked.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A baby stroller with adjustable sitting position, characterized in that: The invention comprises a frame (1) and a seat (2), wherein the seat (2) comprises a seat portion (21) and a backrest portion (22), wherein a rotation hinge point is provided between the backrest portion (22) and the frame (1), and a spacing margin is left between the rotation hinge point between the backrest portion (22) and the frame (1) and the hinge point between the seat portion (21) and the backrest portion (22); the seat (22) is provided with a rotation adjustment structure (23), and the rotation adjustment structure (23) is capable of limiting the relative rotation between the backrest portion (22) and the frame (1); the seat (21) and the backrest portion (22) are hingedly connected, and a telescopic rod (4) is connected between the seat (21) and the frame (1), and the two ends of the telescopic rod (4) are respectively connected to the seat (21) and the frame (1), and one end of the telescopic rod (4) is a fixed end (401), and the other end of the telescopic rod (4) is a hinged end (402).

2. A baby stroller with adjustable sitting position according to claim 1, characterized in that: Two telescopic rods (4) are provided and are parallel to each other.

3. The baby stroller with adjustable sitting position according to claim 1, characterized in that: The telescopic rod (4) comprises a sleeve (41) and a core rod (42), wherein the core rod (42) and the sleeve (41) are connected by a threaded connection; one end of the sleeve (41) is threadedly connected with a locking nut (43), wherein the locking nut (43) is sleeved on the core rod (42); an end of the sleeve (41) close to the locking nut (43) is provided with a plurality of notches (411), wherein the locking nut (43) can force an end of the sleeve (41) corresponding to the notches (411) to shrink inwardly so as to press against the core rod (42).

4. A baby stroller with adjustable sitting position according to claim 3, characterized in that: The inner hole of the locking nut (43) comprises an internal thread section (431) and a tapered hole section (432), and the inner diameter of the tapered hole section (432) gradually decreases in a direction away from the internal thread section (431).

5. The baby stroller with adjustable sitting position according to claim 4, characterized in that: The inner hole of the locking nut (43) further comprises a guide section (433), the guide section (433) being connected to the small end of the tapered hole section (432), and a clearance fit between the guide section (433) and the core rod (42).

6. The baby stroller with adjustable sitting position according to claim 3, characterized in that: The sleeve (41) is provided with an external thread for connecting to a locking nut (43), and both the external thread and the internal thread of the locking nut (43) are tapered threads.

7. The baby stroller with adjustable sitting position according to claim 1, characterized in that: A connecting member (24) is connected between the seat (2) and the frame (1), and a backrest rotating shaft (25) is connected between the connecting member (24) and the backrest (22); the rotation adjustment structure (23) comprises a fan-shaped plate (231), a snap-in pin (232) and a traction member (233); the fan-shaped plate (231) is fixed to the connecting member (24), and the hinge centerline between the connecting member (24) and the backrest (22) coincides with the curvature centerline of the fan-shaped plate (231); a plurality of pin grooves (2311) are provided on the arc side of the fan-shaped plate (231), and the pin grooves (2311) are provided for the snap-in pins (232) to be inserted into the fan-shaped plate (231). The connecting pin (232) is connected by a snap connection, and the curvature center lines of the snap connection pin (232) and the fan-shaped plate (231) are parallel to the backrest rotation shaft (25); the snap connection pin (232) and the backrest portion (22) are slidably connected in a direction perpendicular to the curvature center line of the fan-shaped plate (231), and a tension spring (235) is connected between the snap connection pin (232) and the backrest rotation shaft (25), and the tension spring (235) is used to force the snap connection pin (232) to enter the pin groove (2311), and the traction member (233) is used to pull the snap connection pin (232) out of the pin groove (2311).

8. The baby stroller with adjustable sitting position according to claim 1, characterized in that: It also comprises a foot support portion (5), wherein two opposite sides of the foot support portion (5) are respectively hinged to the seat portion (21), and a hinged portion between the foot support portion (5) and the seat portion (21) has friction damping.

Images