Folding baby carriage frame

Abstract

The utility model provides a folding baby carriage frame which comprises a rear supporting leg, a rotating part, a front supporting leg, a push rod and a U-shaped handle. Rear wheels are respectively arranged at the lower parts of the two rear supporting legs; the rotating part comprises outer rotating pieces and inner rotating pieces which rotate relative to each other, a rotating positioning mechanism is arranged between the outer rotating pieces and the inner rotating pieces, the two outer rotating pieces are connected with the upper ends of the two rear supporting legs respectively, and cantilevers are arranged on the lower portions of the two inner rotating pieces; front wheels are arranged at the lower ends of the two front supporting legs respectively, the upper ends of the two front supporting legs are hinged to the cantilever, short rods are hinged to the upper middle portions of the two front supporting legs respectively, and the other ends of the two short rods are hinged to the upper middle portions of the rear supporting legs respectively. The lower ends of the two push rods are connected to the outer rotating pieces of the rotating part respectively. And two ends of the U-shaped handle are respectively connected with the upper parts of the two push rods. The length size of the folding baby carriage frame is not too large after the folding baby carriage frame is folded, and the folding baby carriage frame is convenient to package, transport and store.

Description

Technical Field

[0001] The utility model belongs to the field of children's products, and particularly relates to a folding baby carriage frame. Background Art

[0002] Baby carriages are used to carry children at home or when going out, which is convenient for family members to carry and take care of children at any time. With the increase in the height of the younger generation of parents and children, the height of the furniture and supplies they use also needs to increase to reduce the bending amplitude of the users. Especially when putting a child into or picking up a child from a baby carriage, a higher baby carriage can effectively reduce the burden of parents bending down. Currently, most of the front legs, rear legs and push rods of baby carriages use the same hinge point. If the height of the vehicle body is increased and the front and rear lengths of the vehicle body are ensured, the front legs and rear legs need to be lengthened, so that the height of the vehicle body after folding is also relatively large, which is not convenient for packaging, transportation and storage. Summary of the Utility Model

[0003] In view of this, the purpose of the present utility model is to provide a folding baby carriage frame to overcome or at least partially solve or alleviate the above problems.

[0004] The present utility model provides a folding baby carriage frame, comprising:

[0005] Rear legs, with rear wheels respectively arranged at the lower parts of the two rear legs;

[0006] A rotating part, which includes an outer rotating piece and an inner rotating piece that rotate relative to each other. A rotating positioning mechanism is arranged between the outer rotating piece and the inner rotating piece. The two outer rotating pieces are respectively connected to the upper ends of the two rear legs, and cantilevers are arranged at the lower parts of the two inner rotating pieces;

[0007] Front legs, with front wheels respectively arranged at the lower ends of the two front legs. The upper ends of the two front legs are hinged to the cantilevers. Short rods are respectively hinged to the middle upper parts of the two front legs, and the other ends of the two short rods are respectively hinged to the middle upper parts of the rear legs;

[0008] Push rods, with the lower ends of the two push rods respectively connected to the outer rotating pieces of the rotating part;

[0009] A U-shaped handle, with the two ends of the U-shaped handle respectively connected to the upper parts of the two push rods.

[0010] The present utility model also has the following optional features.

[0011] Optionally, it further includes a baby carrier. First connecting parts are respectively arranged at the two ends of the baby carrier, and second connecting parts are respectively arranged on the two rotating parts or the two push rods. The first connecting parts and the second connecting parts are in plug-in fit.

[0012] Optionally, the two first connecting parts are respectively arranged on the two inner rotating pieces.

[0013] Optionally, the rotation positioning mechanism includes:

[0014] A slider. A chute and a fixed pulley are arranged inside the inner rotating piece. The slider is slidably assembled in the chute. One side of the end of the slider is provided with an insert block. Correspondingly, an insert groove is arranged inside the outer rotating piece, and the insert groove matches the insert block;

[0015] A traction rope. One end of the traction rope is connected to the slider, and the other end of the traction rope bypasses the fixed pulley and forms a traction linkage with the U-shaped handle.

[0016] Optionally, a first return spring is arranged between the slider and the inner rotating piece.

[0017] Optionally, a socket is arranged on the inner rotating piece. The socket is connected to the push rod. A fixing piece is further arranged inside the socket. One end of the fixing piece is provided with an arc surface and a sliding hole. A sliding rod is assembled in the sliding hole. A second return spring is arranged between the sliding rod and the sliding hole. The traction rope bypasses the arc surface and is connected to the inner end of the sliding rod.

[0018] In the folding baby stroller of the present utility model, the upper end of the rear leg is connected to the outer rotating piece of the rotating part, the upper end of the front leg is connected to the rear leg, a short rod is hinged on the front leg, a cantilever is arranged on the inner rotating piece of the rotating part, and the cantilever is hinged to the other end of the short rod, so that a four-bar linkage is formed among the front leg, the cantilever, the short rod and the rear leg, and the baby stroller is folded through the four-bar linkage. In this way, while ensuring the unfolding height of the baby stroller, the hinged position at the upper end of the front leg is reduced, the lengths of the front leg and the rear leg do not need to be lengthened, and the length dimension of the baby stroller after folding is not too large, which is convenient for packaging, transportation and storage. Description of the Drawings

[0019] Figure 1 is the side structure diagram of the folding baby stroller of the present utility model;

[0020] Figure 2 is the front-side three-dimensional structure diagram of the folding baby stroller of the present utility model;

[0021] Figure 3 is the rear-side three-dimensional structure diagram of the folding baby stroller of the present utility model;

[0022] Figure 4 is the folding state structure diagram of the folding baby stroller of the present utility model;

[0023] Figure 5It is the rotational positioning structure diagram inside the rotating part of the folding baby stroller of the present utility model;

[0024] Figure 6 It is the exploded structure diagram of the rotating part of the folding baby stroller of the present utility model;

[0025] Figure 7 It is Figure 6 the structure diagram from another angle of

[0026] In the figure: 1. Rear leg; 2. Rear wheel; 3. Rotating part; 301. Outer rotating piece; 302. Inner rotating piece; 303. Cantilever; 304. Chute; 305. Embedded groove; 306. Insert sleeve; 307. Bush; 4. Front leg; 5. Front wheel; 6. Short rod; 7. Push rod; 8. U-shaped handle; 9. Baby carrier; 10. First connecting part; 11. Second connecting part; 12. Slide block; 1201. Embedded block; 13. Pulley; 14. Towing rope; 15. First return spring; 16. Fixed piece; 1601. Arc part; 17. Slide rod; 18. Second return spring; 19. Front cross beam.

[0027] The following will further elaborate on the present utility model in detail with reference to the drawings and embodiments. Detailed implementation manners

[0028] Embodiment 1

[0029] Refer to Figure 1 , Figure 2 and Figure 3 , an embodiment of the present utility model provides a folding baby stroller, including: rear legs 1, rotating part 3, front legs 4, push rods 7 and U-shaped handles 8; rear wheels 2 are respectively arranged at the lower parts of the two rear legs 1; the rotating part 3 includes an outer rotating piece 301 and an inner rotating piece 302 that rotate relative to each other, a rotational positioning mechanism is arranged between the outer rotating piece 301 and the inner rotating piece 302, the two outer rotating pieces 301 are respectively connected to the upper ends of the two rear legs 1, and cantilevers 303 are arranged at the lower parts of the two inner rotating pieces 302; front wheels 5 are respectively arranged at the lower ends of the two front legs 4, the upper ends of the two front legs 4 are hinged to the cantilevers 303, short rods 6 are respectively hinged to the middle upper parts of the two front legs 4, and the other ends of the two short rods 6 are respectively hinged to the middle upper parts of the rear legs 1; the lower ends of the two push rods 7 are respectively connected to the outer rotating pieces 301 of the rotating part 3; the two ends of the U-shaped handle 8 are respectively connected to the upper parts of the two push rods 7.

[0030] The outer rotating piece 301 and the inner rotating piece 302 of the rotating part 3 are hinged by a pin shaft, positioned and unlocked by a rotating positioning mechanism, and can rotate relative to each other after unlocking. Insertion posts are provided on the two outer rotating pieces 301, and the upper ends of the two rear legs 1 are sleeved on the insertion posts to form a connection. The upper ends of the two inner rotating pieces 302 are respectively connected to the two push rods 7. By swinging the two push rods 7, the two inner rotating pieces 302 are driven to swing. Cantilevers 303 are respectively fixed at the lower ends of the two inner rotating pieces 302, and the ends of the two cantilevers 303 are respectively hinged to the upper ends of the two front legs 4. Short rods 6 are also hinged to the upper parts of the two front legs 4, and the other ends of the two short rods 6 are respectively hinged to the upper parts of the two rear legs 1, forming a four-bar linkage mechanism. A front cross beam 19 is connected between the two front legs 4 to reinforce the two front legs 4.

[0031] When unfolding the vehicle frame, pull out the U-shaped handle 8 from the push rod 7. By swinging the push rod 7 upward, the inner rotating piece 302 is driven to swing upward relative to the outer rotating piece 301. At this time, the two cantilevers 303 swing downward until they are aligned with the two rear legs 1, pulling the two front legs 4 to open forward. At this time, the rotating positioning mechanism is locked, and the cantilever 303 is relatively fixed to the rear leg 1, so that the front leg 4, the short rod 6, and the rear leg 1 form a triangular stable mechanism.

[0032] When folding up the vehicle frame, push the U-shaped handle 8 into the push rod 7 to unlock the rotating positioning mechanism, and then press down the push rod 7 to drive the inner rotating piece 302 to swing downward relative to the outer rotating piece 301. At this time, the two cantilevers 303 swing forward, lifting the upper parts of the two front legs 4. Under the restraint of the two short rods 6, the two front legs 4 swing downward, and the two front wheels 5 approach the front sides of the two rear wheels 2, and the middle part of the handle 8 approaches the rear sides of the two rear wheels 2, completing the folding of the vehicle frame.

[0033] Embodiment 2

[0034] Reference Figure 4 , on the basis of Embodiment 1, it further includes a baby carrier 9. First connection parts 10 are respectively provided at both ends of the baby carrier 9, and second connection parts 11 are respectively provided on the two rotating parts 3 or the two push rods 7. The first connection part 10 and the second connection part 11 are in plug-in fit.

[0035] The baby carrier 9 is a baby basket or a baby seat. Taking the baby seat as an example, first connection parts 10 are provided at the lower parts on both sides of the baby seat. The first connection part 10 is a socket structure with the port facing downward, and plug structures with the ends facing upward are respectively provided on the two rotating parts 3 or the two push rods 7. By respectively inserting the two first connection parts 10 into the two second connection parts 11, the baby seat can be connected to the vehicle frame.

[0036] Embodiment 3

[0037] Reference Figure 4, on the basis of Embodiment 2, two first connecting parts 10 are respectively arranged on two inner rotating pieces 302.

[0038] The two first connecting parts 10 adopt a plug structure with the port facing upward. The two first connecting parts 10 and one inner rotating piece 302 are respectively of an integral structure, which can ensure the stability of the baby carrier 9 plugged on the vehicle frame.

[0039] Embodiment 4

[0040] Reference Figure 2 and Figure 3 , on the basis of Embodiment 1, the rotation positioning mechanism includes: a slider 12 and a traction rope 14; a chute 304 and a pulley 13 are arranged inside the inner rotating piece 302. The slider 12 is slidably assembled in the chute 304. On one side of the end of the slider 12, an inlay block 1201 is arranged. Correspondingly, an inlay groove 305 is arranged inside the outer rotating piece 301, and the inlay groove 305 matches the inlay block 1201; one end of the traction rope 14 is connected to the slider 12, and the other end of the traction rope 14 bypasses the pulley 13 and forms a traction linkage with the U-shaped handle 8.

[0041] One side of the slider 12 is slidably matched with the chute 304 inside the inner rotating piece 302. On both ends or one end of the other side of the slider 12, an inlay block 1201 is arranged, and this side faces the inner side of the outer rotating piece 301. When the inner rotating piece 302 rotates relative to the outer rotating piece 301 to the angle when the vehicle frame is unfolded, the inlay groove 305 inside the outer rotating piece 301 is aligned with the chute 304 inside the inner rotating piece 302. At this time, it is aligned with the inlay block 1201 on the slider 12, and the inlay block 1201 on the slider 12 can slide into the inlay groove 305 to prevent the relative rotation of the inner rotating piece 302 and the outer rotating piece 301, realizing rotation positioning. When unlocking is required, the slider 12 is pulled through the traction rope 14, so that the inlay block 1201 on the slider 12 is pulled out of the inlay groove 305. At this time, the inner rotating piece 302 can rotate relative to the outer rotating piece 301, realizing the unlocking of the rotation positioning mechanism, which is convenient for folding and retracting the vehicle frame.

[0042] Embodiment 5

[0043] Reference Figure 1 , Figure 2 and Figure 3 , on the basis of Embodiment 4, a first return spring 15 is arranged between the slider 12 and the inner rotating piece 302.

[0044] Shaft sleeves 307 are provided at the circular parts of the outer rotating piece 1 and the inner rotating piece 302. Long holes are provided on the slider 12 for the shaft sleeves 307 to pass through. A first return spring 15 is provided at one end of the shaft sleeve 307 and the long hole, which can apply a return elasticity to the slider 12 by the first return spring 15. When the groove 305 in the outer rotating piece 301 is aligned with the sliding groove 304 in the inner rotating piece 302, at this time it is aligned with the insert block 1201 on the slider 12, and the slider 12 slides under the elasticity of the first return spring 15, so that the insert block 1201 slides into the groove 305.

[0045] Embodiment 6

[0046] Reference Figure 1 , on the basis of Embodiment 4, an insertion sleeve 306 is provided on the inner rotating piece 302. The insertion sleeve 306 is connected to the push rod 7. A fixing piece 16 is also provided in the insertion sleeve 306. An arc part 1601 and a sliding hole are provided at one end of the fixing piece 16. A sliding rod 17 is assembled in the sliding hole. A second return spring 18 is provided between the sliding rod 17 and the sliding hole. The traction rope 14 bypasses the arc part 1601 and is connected to the inner end of the sliding rod 17.

[0047] The insertion sleeve 306 is communicated with the inside of the inner rotating piece 302. The other end of the traction rope 14 bypasses the pulley 13 and then is led into the insertion sleeve 306, and then bypasses the arc part 1601 on the fixing piece 16 and is connected to the inner end of the sliding rod 17. When the user pushes the U-shaped handle 8 back into the push rod 7, the inner end of the U-shaped handle 8 finally presses down the sliding rod 17. The sliding rod 17 drives the traction rope 14 to move, drives the slider 12 to move along the sliding groove 304, and finally pulls out the insert block 1201 on the slider 12 from the groove 305, realizing the unlocking of the rotation positioning mechanism. The second return spring 18 pushes out the sliding rod 17 in the free state, so that the traction rope 14 does not apply a pulling force to unlock the slider 12 in the non-manpower operation state.

[0048] As mentioned above, only the preferred specific embodiments of the present invention are described, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims. The components and structures not described in detail in this embodiment are well-known components and common structures or common means in this industry, and will not be described one by one here.

Claims

1. A folding baby stroller, characterized in that, Comprising: Rear legs (1), with rear wheels (2) respectively arranged at the lower parts of the two rear legs (1); Rotating part (3), the rotating part (3) includes an outer rotating piece (301) and an inner rotating piece (302) that rotate relative to each other. A rotating positioning mechanism is arranged between the outer rotating piece (301) and the inner rotating piece (302). The two outer rotating pieces (301) are respectively connected to the upper ends of the two rear legs (1), and cantilevers (303) are arranged at the lower parts of the two inner rotating pieces (302); Front legs (4), with front wheels (5) respectively arranged at the lower ends of the two front legs (4). The upper ends of the two front legs (4) are hinged to the cantilevers (303). Short rods (6) are respectively hinged to the middle-upper parts of the two front legs (4), and the other ends of the two short rods (6) are respectively hinged to the middle-upper parts of the rear legs (1); Push rods (7), with the lower ends of the two push rods (7) respectively connected to the outer rotating pieces (301) of the rotating part (3); U-shaped handle (8), with the two ends of the U-shaped handle (8) respectively connected to the upper parts of the two push rods (7).

2. The folding baby stroller according to claim 1, wherein It further includes a baby carrier (9). First connection parts (10) are respectively arranged at the two ends of the baby carrier (9). Second connection parts (11) are respectively arranged on the two rotating parts (3) or the two push rods (7). The first connection part (10) and the second connection part (11) are in plug-in fit.

3. The folding baby stroller according to claim 2, wherein, The two first connection parts (10) are respectively arranged on the two inner rotating pieces (302).

4. The folding baby stroller according to claim 1, characterized in that, The rotating positioning mechanism includes: Slider (12), a chute (304) and a pulley (13) are arranged inside the inner rotating piece (302). The slider (12) is slidably assembled in the chute (304). One side of the end of the slider (12) is provided with an inlay block (1201). Correspondingly, an inlay groove (305) is arranged inside the outer rotating piece (301), and the inlay groove (305) matches the inlay block (1201); Traction rope (14), one end of the traction rope (14) is connected to the slider (12), and the other end of the traction rope (14) bypasses the pulley (13) and forms a traction linkage with the U-shaped handle (8).

5. The folding baby stroller according to claim 4, characterized in that, A first return spring (15) is arranged between the slider (12) and the inner rotating piece (302).

6. The folding baby stroller according to claim 4, wherein, An insertion sleeve (306) is arranged on the inner rotating piece (302). The insertion sleeve (306) is connected to the push rod (7). A fixing piece (16) is further arranged inside the insertion sleeve (306). One end of the fixing piece (16) is provided with an arc part (1601) and a sliding hole. A sliding rod (17) is assembled in the sliding hole. A second return spring (18) is arranged between the sliding rod (17) and the sliding hole. The traction rope (14) bypasses the arc part (1601) and is connected to the inner end of the sliding rod (17).

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