CN114572292B

CN114572292B - A child stroller frame

Info

Publication number: CN114572292B
Application number: CN202210211367.2A
Authority: CN
Inventors: 廖整辉
Original assignee: Zhongshan Weiya Technology Co ltd
Current assignee: Zhongshan Weiya Technology Co ltd
Priority date: 2022-03-05
Filing date: 2022-03-05
Publication date: 2025-09-12
Anticipated expiration: 2042-03-05
Also published as: CN114572292A

Abstract

The invention discloses a stroller frame which can move from an unfolding position to a folding position after a locking device is unlocked, and comprises front legs, front wheel assemblies, rear legs, seat support pieces and transmission assemblies, wherein the front legs are connected with the lower ends of the front legs in a connecting mode, the rear legs comprise rear leg rods and connecting seats connected to the upper ends of the rear leg rods, the front legs are connected to the front sides of the connecting seats in a rotating mode around a first axis A, the lower ends of the rear leg rods are connected with the rear wheel assemblies in a connecting mode, the support rods are connected to the rear sides of the connecting seats in a rotating mode around a second axis B, the transmission assemblies capable of enabling the front legs to rotate towards the rear legs to be close when the support rods rotate towards the rear legs are arranged between the support rods and the front legs, the rear ends of the seat support pieces are connected to the front legs in a rotating mode around a third axis C, and the transmission assemblies capable of driving the seat support pieces to be close towards the front legs when the front legs rotate towards the rear legs. The invention aims to overcome the defects of the prior art and provide the child cart frame which is simple in folding structure and convenient to fold.

Description

Baby carriage frame

[ Field of technology ]

The invention relates to a stroller frame.

[ Background Art ]

With the development of society, the baby carriage has become a necessary tool for infants to travel. Parents pay more attention to the characteristics of easy folding, small size, convenient storage and the like of the child cart besides pursuing the basic requirements of safety and stability of the child cart. In view of this, at present, the child cart generally has a foldable function, and when in use, the cart is unfolded, and when not in use, the cart is folded, so that the child cart is convenient to carry, and the occupied space is reduced. The invention further provides a novel embodiment.

The present invention has been developed in response to the above-described drawbacks.

[ Invention ]

The invention aims to overcome the defects of the prior art and provide the child cart frame which is simple in folding structure and convenient to fold.

The invention is realized by the following technical scheme:

a stroller frame movable from an unfolded position to a folded position upon unlocking a locking device, comprising:

A front leg 11, wherein the lower end of the front leg 11 is connected with a front wheel assembly 111;

The rear leg 12, the rear leg 12 includes a rear leg rod 121 and a connecting seat 122 connected to the upper end of the rear leg rod 121, the front leg 11 is rotatably connected to the front side of the connecting seat 122 around a first axis a, and the lower end of the rear leg rod 121 is connected with a rear wheel assembly 123;

The stay bar 13 is rotatably connected to the rear side of the connecting seat 122 around the second axis B, and a linkage piece 14 capable of enabling the front leg 11 to rotate towards the rear leg 12 when the stay bar 13 rotates towards the rear leg 12 is arranged between the stay bar 13 and the front leg 11;

the rear end of the seat support 2 is rotatably connected to the front leg 11 around a third axis C, and a transmission assembly 3 capable of driving the seat support 2 to approach the front leg 11 when the front leg 11 rotates toward the rear leg 12 is arranged between the seat support 2 and the front leg 11.

The transmission assembly 3 comprises a sliding piece 31 which is connected to the front leg 11 in a sliding way, a first transmission rod 32 is connected between the sliding piece 31 and the front end of the seat support 2 in a rotating way, a second transmission rod 33 is further connected between the sliding piece 31 and the connecting seat 122 in a movable way, a sliding groove 112 which can enable the sliding piece 31 to slide in is formed in the front leg 11, and a pushing part 34 which can push the sliding piece 31 to slide when the front leg 11 rotates so as to enable the seat support 2 to rotate to be unfolded or folded is formed in the sliding groove 112.

One end of the second transmission rod 33 is rotatably connected to the connection seat 122 around the fourth axis D, the other end of the second transmission rod 33 is rotatably connected to the sliding member 31 around the fifth axis E, one end of the first transmission rod 32 is rotatably connected to the front end of the seat support 2 around the eighth axis H, and the other end of the first transmission rod 32 is rotatably connected to the sliding member 31 around the fifth axis E.

The pushing portion 34 includes an upper pushing surface 341 disposed in the sliding groove 112 and capable of pushing the sliding member 31 to drive the seat support 2 to rotate and fold when the front leg 11 rotates and folds toward the rear leg, and a lower pushing surface 342 disposed in the sliding groove 112 and capable of pushing the sliding member 31 to drive the seat support 2 to rotate and fold when the front leg 11 rotates and unfolds relative to the rear leg.

The sliding member 31 is a pin.

The first axis A and the second axis B are parallel to each other.

One end of the linkage 14 is rotatably connected to the stay 13 around a sixth axis F, the sixth axis F is offset from and parallel to the second axis B, the other end of the linkage 14 is rotatably connected to the front leg 12 around a seventh axis G, and the seventh axis G is offset from and parallel to the first axis a.

The locking device 4 is arranged between the stay bar 13 and the rear leg 12, the locking device 4 can lock the stroller frame in an unfolding state, the locking device 4 comprises a left rotating seat 41 arranged on the connecting seat 122 and a right rotating seat 42 arranged on the stay bar 13 and rotationally connected with the left rotating seat 41, a cavity 43 is enclosed between the left rotating seat 41 and the right rotating seat 42, a spline 44 capable of sliding relative to the cavity 43 is arranged in the cavity 43, spline grooves 45 capable of being clamped with the spline 44 are arranged on the left rotating seat 41 and the right rotating seat 42, an elastic piece 46 capable of enabling the spline 44 to be simultaneously clamped with the spline grooves 45 on the left rotating seat 41 and the right rotating seat 42 is arranged between the spline 44 and the right rotating seat 42, the spline grooves 45 on the right rotating seat 42 are separated from the spline grooves 45 on the right rotating seat 42 when pushed, and pushing pieces 47 enter into the left rotating seat 41 are arranged on the pushing pieces 47, and the spline grooves 47 extend into the stay bar 13.

The stay bar 13 is internally connected with a handle bar 5 which can unlock the locking device 4 when sliding, and a locking structure 6 which can lock the handle bar 5 and the stay bar 13 is arranged between the handle bar 5 and the stay bar 13.

The locking structure 6 comprises a locking position 61 arranged on a stay bar 13, the handle bar 5 is connected with a clamping piece 62 which can transversely slide relatively to the handle bar to clamp or separate from the locking position 61, the handle bar 5 is also connected with a driving piece 63 which can drive the clamping piece 62 to transversely slide and separate from the locking position 61 when vertically sliding, the handle bar 5 is also rotationally connected with an operating piece 64, a guy cable 65 which can pull the driving piece 63 to slide when the operating piece 64 is operated is connected between the operating piece 64 and the driving piece 63, a first elastic reset piece 66 which can drive the driving piece 63 to reset is connected between the driving piece 63 and the handle bar 5, and a second elastic reset piece 67 which can drive the operating piece 64 to reset is connected between the operating piece 64 and the handle bar 5.

Compared with the prior art, the child stroller frame has the advantages that when the child stroller frame needs to be folded, the locking device is unlocked firstly, then the stay bar is pushed to rotate around the second axis B towards the rear leg rod to be close, the stay bar drives the linkage piece to move when rotating, the linkage piece drives the front leg to rotate around the first axis A relative to the connecting seat and towards the rear leg rod to be close and folded, and when the front leg towards the rear leg rod to be close, the front leg drives the transmission assembly to move, so that the transmission assembly drives the seat support piece to rotate around the third axis C relative to the front leg and towards the front leg to be close and folded, at the moment, the folding of the whole child stroller frame is completed, the folding mode is very simple, and only the stay bar is required to be rotated to be close towards the rear leg rod after the locking device is unlocked.

[ Description of the drawings ]

FIG. 1 is one of the perspective views of the child stroller frame of the present invention;

FIG. 2 is a second perspective view of the stroller frame of the present invention;

FIG. 3 is a side view of the child stroller frame of the present invention;

FIG. 4 is one of the cross-sectional views of the child stroller frame of the present invention;

FIG. 5 is a second cross-sectional view of the child stroller frame of the present invention;

FIG. 6 is a state diagram of the stroller frame of the present invention when folded;

FIG. 7 is a cross-sectional view of the child stroller frame of the present invention folded;

FIG. 8 is a state diagram of the child stroller frame of the present invention when folded;

FIG. 9 is a cross-sectional view of the child stroller frame of the present invention shown after folding;

FIG. 10 is one of the cross-sectional views of the handlebar of the child stroller frame of the present invention;

FIG. 11 is a second cross-sectional view of the handlebar of the child stroller frame of the present invention;

FIG. 12 is a cross-sectional view of the stay and the connection mount in the stroller frame of the present invention;

FIG. 13 is one of the exploded views of the locking device in the stroller frame of the present invention;

FIG. 14 is a second exploded view of the locking device of the stroller frame of the present invention;

Fig. 15 is an exploded view of the drive assembly in the stroller frame of the present invention.

[ Detailed description ] of the invention

The invention is further described below with reference to the accompanying drawings:

as shown in fig. 1 to 15, the present invention provides a stroller frame movable from an unfolded position to a folded position after unlocking a locking device, comprising:

When the stroller frame needs to be folded, the locking device is unlocked firstly, then the stay bar 13 is pushed to rotate around the second axis B towards the rear leg rod 121 to be close, the stay bar 13 drives the linkage piece 14 to move when rotating, the linkage piece 14 drives the front leg 11 to rotate around the first axis A relative to the connecting seat 122 and towards the rear leg rod 121 to be close to be folded, the front leg 11 drives the transmission assembly 3 to move when the front leg 11 is close to the rear leg rod 121, and the transmission assembly 3 drives the seat support 2 to rotate around the third axis C relative to the front leg 11 and towards the front leg 11 to be close to be folded.

As shown in fig. 4 and 15, the transmission assembly 3 includes a sliding member 31 slidably connected to the front leg 11, a first transmission rod 32 is rotatably connected between the sliding member 31 and the front end of the seat support 2, a second transmission rod 33 is movably connected between the sliding member 31 and the connection seat 122, a sliding groove 112 for sliding the sliding member 31 is provided on the front leg 11, and a pushing portion 34 capable of pushing the sliding member 31 to slide when the front leg 11 rotates so as to enable the seat support 2 to rotate and expand or fold is provided on the sliding groove 112. When the front leg 11 rotates around the first axis a toward the rear leg rod 121 relative to the connecting seat 122, the pushing portion 34 pushes the sliding member 31 to slide in the sliding groove 112 relative to the front leg 11, and at this time, the sliding member 31 drives the first transmission rod 32 and the second transmission rod 33 to move, and the first transmission rod 32 and the second transmission rod 33 cooperate with each other when moving, so that the seat support 2 is folded toward the front leg 11. When the front leg 11 rotates around the first axis a to be unfolded relative to the connecting seat 122, the pushing part 34 pushes the sliding part 31 to slide reversely relative to the front leg 11 in the sliding groove 112, and at the moment, the sliding part 31 drives the first transmission rod 32 and the second transmission rod 33 to move at the same time, so that the seat support 2 is unfolded. The provision of the second transmission lever 33 stabilizes the deployment of the seat support 2 in the deployed state of the stroller frame, and the folding action of the seat support 2 can be smoothly performed when the stroller frame is folded.

As shown in fig. 4 and 15, one end of the second transmission rod 33 is rotatably connected to the connection base 122 around the fourth axis D, the other end of the second transmission rod 33 is rotatably connected to the sliding member 31 around the fifth axis E, one end of the first transmission rod 32 is rotatably connected to the front end of the seat support 2 around the eighth axis H, and the other end of the first transmission rod 32 is rotatably connected to the sliding member 31 around the fifth axis E. When the slider 31 is pushed downward by the pushing portion 34 to rotate and fold the seat support 2, the two ends of the second transmission rod 33 rotate around the fourth axis D and the fifth axis E relative to the connecting seat 122 and the slider 31 to move along with the slider 31, and at the same time, the first transmission rod 32 rotates around the eighth axis H relative to the front end of the seat support 2 and the other end rotates around the fifth axis E relative to the slider 31 under the driving of the slider 31, the front end of the seat support 2 moves along with the first transmission rod 32 and the rear end of the seat support 2 moves around the third axis C relative to the front leg 11, so that the seat support 2 is folded close to the front leg 11.

As shown in fig. 4 to 5, the first transmission rod 32 is a connecting piece with an arc-shaped bending. Is convenient to fold and unfold, overcomes dead points of movement between the rods and ensures smooth action during folding and unfolding.

As shown in fig. 5, the pushing portion 34 includes an upper pushing surface 341 disposed in the chute 112 and capable of pushing the sliding member 31 to drive the seat support 2 to rotate and fold when the front leg 11 is folded toward the rear leg, and a lower pushing surface 342 disposed in the chute 112 and capable of pushing the sliding member 31 to drive the seat support 2 to rotate and fold when the front leg 11 is unfolded relative to the rear leg. The sliding member 31 is a pin.

As shown in fig. 4, the first axis a and the second axis B are parallel to each other.

As shown in fig. 5, one end of the linkage 14 is rotatably connected to the stay 13 about a sixth axis F, which is offset from and parallel to the second axis B, and the other end of the linkage 14 is rotatably connected to the front leg 12 about a seventh axis G, which is offset from and parallel to the first axis a. When the stay bar 13 rotates towards the rear leg bar 121, one end of the linkage member 14 moves along with the stay bar 13 and rotates around the sixth axis F relative to the stay bar 13 during the following movement, the other end of the linkage member 14 pulls the front leg 11 to move and also rotates around the seventh axis G relative to the front leg 11, and at this time, the front leg 11 is driven by the linkage member 14 to rotate towards the rear leg bar 121.

As shown in fig. 13 to 14, the locking device 4 is arranged between the stay 13 and the rear leg 12, and the locking device 4 can lock the stroller frame in the unfolded state.

As shown in fig. 13 to 14, the locking device 4 includes a left rotating seat 41 disposed on the connecting seat 122 and a right rotating seat 42 disposed on the supporting rod 13 and rotationally connected with the left rotating seat 41, a cavity 43 is enclosed between the left rotating seat 41 and the right rotating seat 42, a spline 44 capable of sliding relative to the cavity 43 is disposed in the cavity 43, spline grooves 45 capable of being engaged with the spline 44 are disposed on the left rotating seat 41 and the right rotating seat 42, an elastic member 46 capable of enabling the spline 44 to be engaged with the spline grooves 45 on the left rotating seat 41 and the right rotating seat 42 is disposed between the spline 44 and the right rotating seat 42, a pushing member 47 capable of pushing the spline 44 out of the spline grooves 45 on the right rotating seat 42 and entering into the left rotating seat 41 when being pushed is disposed between the spline 44 and the right rotating seat 42, and an extension part 471 capable of extending into the supporting rod 13 is disposed on the pushing member 47. When the stroller frame needs to be folded, the locking device 4 needs to be unlocked, the extension part 471 is pushed, the extension part 471 slides transversely along with the pushing piece 47 when moving, the pushing piece 47 pushes the spline 44 and makes the spline 44 separate from the spline groove 45 on the right rotating seat 42 and completely enter the left rotating seat 41, at this time, the locking device 4 is unlocked, and the stay bar 13 can rotate around the first axis a relative to the connecting seat 122 and draw close to the rear leg bar 121.

As shown in fig. 10 to 12, the stay bar 13 is internally connected with a handle bar 5 capable of unlocking the locking device 4 when sliding, and a locking structure 6 capable of locking the handle bar 5 and the stay bar 13 is arranged between the handle bar 5 and the stay bar 13. When the handle bar 5 slides towards the stay bar 13, the locking device 4 can be unlocked, and the stay bar 13 can rotate and fold relative to the connecting seat 122.

As shown in fig. 10 to 12, the locking structure 6 includes a locking position 61 provided on the stay 13, the handle 5 is connected with a clamping member 62 capable of sliding transversely relative to the handle 5 and clamping or separating from the locking position 61, the handle 5 is also connected with a driving member 63 capable of driving the clamping member 62 to slide transversely and separating from the locking position 61 when sliding vertically, the handle 5 is also connected with an operating member 64 in a rotating manner, a cable 65 capable of pulling the driving member 63 to slide when the operating member 64 is operated is connected between the operating member 64 and the driving member 63, a first elastic reset member 66 capable of driving the driving member 63 to reset is connected between the driving member 63 and the handle 5, and a second elastic reset member 67 capable of driving the operating member 64 to reset is connected between the operating member 64 and the handle 5. The driving piece 63 and the clamping piece 62 are transmitted through a pin shaft and an inclined plane, so that the driving piece 63 can drive the clamping piece 62 to transversely slide relative to the handle rod 5 when vertically sliding. The locking holes 61 are a plurality of locking holes, wherein the height of the handle bar 5 relative to the supporting bar 13 can be adjusted through the locking holes at the upper end of the supporting bar 13, and the locking holes at the lower end of the supporting bar 13 are used for locking the supporting bar 13 and the handle bar 5 in the folded position. When the locking device 4 needs to be unlocked, the locking structure 6 is first unlocked, the operating member 64 is rotated, the operating member 64 pulls the pull cable 65 to move after being rotated, the pull cable 65 drives the driving member 63 to move upwards relative to the handle bar 5 when moving, the driving member 63 drives the clamping member 62 to slide transversely relative to the handle bar 5 to be separated from the locking position 61, and at the moment, the handle bar 5 can slide downwards relative to the supporting bar 13 to unlock the locking device 4.

As shown in fig. 10 to 11, the handle 5 is provided with a pressing portion 51 capable of pushing the extension 471 and thus sliding the pushing member 47. When the handle 5 slides downwards relative to the stay 13, the pushing portion 51 on the handle 5 pushes the extending portion 471 to push the pushing member 47 to slide laterally, and the pushing member 47 pushes the spline 44 to unlock the locking device 4 when sliding laterally.

As shown in fig. 1, a foldable seat 7 is further connected to the seat support 2. The seat 7 can be folded, further reducing the space taken up by the stroller frame when folded.

Claims

1. A stroller frame capable of moving from an unfolded position to a folded position after a locking device is unlocked, characterized in that it comprises:

A front leg (11), wherein the lower end of the front leg (11) is connected to a front wheel assembly (111);

A hind leg (12), the hind leg (12) comprising a hind leg rod (121) and a connecting seat (122) connected to the upper end of the hind leg rod (121); the front leg (11) is connected to the front side of the connecting seat (122) by rotating around a first axis (A); and the lower end of the hind leg rod (121) is connected to a rear wheel assembly (123);

A support rod (13), the support rod (13) being rotatably connected to the rear side of the connecting seat (122) about the second axis (B), and a linkage member (14) being provided between the support rod (13) and the front leg (11) for enabling the front leg (11) to rotate toward the rear leg (12) when the support rod (13) rotates toward the rear leg (12);

A seat support member (2), wherein the rear end of the seat support member (2) is connected to the front leg (11) by rotating around a third axis (C), and a transmission assembly (3) is provided between the seat support member (2) and the front leg (11) and is capable of driving the seat support member (2) to move closer to the front leg (11) when the front leg (11) rotates closer to the rear leg (12);

The transmission assembly (3) includes a sliding member (31) slidably connected to the front leg (11), a first transmission rod (32) is rotatably connected between the sliding member (31) and the front end of the seat support member (2), and a second transmission rod (33) is movably connected between the sliding member (31) and the connecting seat (122), and a sliding groove (112) is provided on the front leg (11) for the sliding member (31) to slide inside, and a pushing portion (34) is provided on the sliding groove (112) for pushing the sliding member (31) to slide when the front leg (11) rotates, thereby causing the seat support member (2) to rotate, unfold, or fold.

The pushing portion (34) includes an upper pressing surface (341) which is arranged in the chute (112) and can push the sliding member (31) when the front leg (11) rotates and folds toward the rear leg, thereby driving the seat support member (2) to rotate and fold. The pushing portion (34) also includes a lower pressing surface (342) which is arranged in the chute (112) and can push the sliding member (31) when the front leg (11) rotates and unfolds relative to the rear leg, thereby driving the seat support member (2) to rotate and unfold.

The first axis (A) and the second axis (B) are parallel to each other.

2. The stroller frame according to claim 1, characterized in that: one end of the second transmission rod (33) is rotatably connected to the connecting seat (122) around the fourth axis (D), the other end of the second transmission rod (33) is rotatably connected to the sliding member (31) around the fifth axis (E), one end of the first transmission rod (32) is rotatably connected to the front end of the seat support (2) around the eighth axis (H), and the other end of the first transmission rod (32) is rotatably connected to the sliding member (31) around the fifth axis (E).

3. The stroller frame according to claim 1, wherein the sliding member (31) is a pin.

4. The stroller frame according to claim 1, characterized in that: one end of the linkage member (14) is rotatably connected to the support rod (13) around a sixth axis (F), the sixth axis (F) deviates from the second axis (B) and is parallel to the second axis (B), and the other end of the linkage member (14) is rotatably connected to the front leg (11) around a seventh axis (G), and the seventh axis (G) deviates from the first axis (A) and is parallel to the first axis (A).

5. The stroller frame according to claim 1, characterized in that: the locking device (4) of the stroller frame is provided between the support rod (13) and the rear leg (12), and the locking device (4) can lock the stroller frame in the unfolded state, the locking device (4) comprises a left rotating seat (41) provided on the connecting seat (122) and a right rotating seat (42) provided on the support rod (13) and rotatably connected to the left rotating seat (41), a cavity (43) is formed between the left rotating seat (41) and the right rotating seat (42), a spline (44) capable of sliding relative thereto is provided in the cavity (43), and the left rotating seat (41) and the right rotating seat (42) are provided with a spline (44) capable of sliding relative thereto. 1) and a spline groove (45) capable of engaging with the spline (44) are provided on the right rotating seat (42); an elastic member (46) is provided between the spline (44) and the left rotating seat (41) so that the spline (44) can be engaged with the spline grooves (45) on both the left rotating seat (41) and the right rotating seat (42); a pushing member (47) is provided between the spline (44) and the right rotating seat (42) so that the spline (44) can be pushed out of the spline groove (45) on the right rotating seat (42) and into the left rotating seat (41) when pushed; and an extension portion (471) is provided on the pushing member (47) which can extend into the support rod (13).

6. The stroller frame according to claim 5, characterized in that: a handlebar (5) capable of unlocking the locking device (4) when sliding is connected to the support rod (13), and a locking structure (6) capable of locking the handlebar (5) and the support rod (13) is provided between the handlebar (5) and the support rod (13).

7. The stroller frame according to claim 6, characterized in that: the locking structure (6) includes a locking position (61) provided on the support rod (13), the handle rod (5) is connected to a clamping member (62) that can slide horizontally relative to the handle rod and engage in or disengage the locking position (61), the handle rod (5) is further connected to a driving member (63) that can drive the clamping member (62) to slide horizontally and disengage the locking position (61) when sliding vertically, the handle rod (5) is further rotatably connected to an operating member (64), and a cable (65) is connected between the operating member (64) and the driving member (63) that can pull the driving member (63) to slide when the operating member (64) is operated, a first elastic reset member (66) that can drive the driving member (63) to reset is connected between the driving member (63) and the handle rod (5), and a second elastic reset member (67) that can drive the operating member (64) to reset is connected between the operating member (64) and the handle rod (5).