Joint structure of stroller and stroller framework

Abstract

The utility model discloses a joint structure of a stroller, which is characterized in that a first connecting seat is rotatably connected to a third connecting seat around a first axis, a second connecting seat is rotatably connected to the third connecting seat around a second axis, a first transmission sheet is fixedly connected to the first connecting seat, and a second transmission sheet is fixedly connected to the second connecting seat; a first strip-shaped hole is formed in the first transmission piece, a second strip-shaped hole is formed in the second transmission piece, a linear groove is formed in the third connecting base, and a pin shaft penetrating through the first strip-shaped hole and the second strip-shaped hole at the same time is arranged in the linear groove. The pin shaft is in sliding connection with the third connecting seat, so that when the first connecting seat is rotationally unfolded or folded relative to the third connecting seat, the pin shaft drives the second connecting seat to rotationally unfold or fold relative to the third connecting seat, and a locking structure is further arranged in the third connecting seat. The utility model further discloses a stroller framework adopting the joint structure. The joint structure of the baby stroller and the framework of the baby stroller are simple in structure and flexible to fold and unfold.

Description

Technical Field

[0001] The utility model relates to a joint structure of a baby carriage. The utility model also relates to a baby carriage frame

Background Art

[0002] Baby carriages have become an indispensable product in the growth process of infants and young children. Currently, most baby carriages can be unfolded or folded. In the unfolded state, they are used for children to take rides when going out, and in the folded state, they are convenient for storage or carrying. The joint structure is a key component for a baby carriage to be unfolded or folded, and plays an important role in the unfolding or folding movement of the baby carriage. There are various joint structures for baby carriages on the market currently, and their movement principles are not the same.

[0003] Therefore, the utility model provides a new joint structure of a baby carriage and a baby carriage frame.

Content of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a joint structure of a baby carriage with a simple structure and flexible folding.

[0005] The utility model also provides a baby carriage frame with a simple structure and flexible folding

[0006] The utility model is realized by the following technical solutions:

[0007] A joint structure of a baby carriage, characterized in that: it includes a third connecting seat, a first connecting seat is rotatably connected to the third connecting seat around a first axis, a second connecting seat is also rotatably connected to the third connecting seat around a second axis, a first transmission piece is fixedly connected to the first connecting seat, a second transmission piece is fixedly connected to the second connecting seat, a first strip-shaped hole is provided on the first transmission piece, a second strip-shaped hole communicated with the first strip-shaped hole is provided on the second transmission piece, a straight groove is provided on the third connecting seat, and a pin shaft passing through the first strip-shaped hole and the second strip-shaped hole at the same time is provided in the straight groove. The pin shaft is slidably connected to the third connecting seat, so that when the first connecting seat rotates and unfolds or folds relative to the third connecting seat, the pin shaft drives the second connecting seat to rotate and unfold or fold relative to the third connecting seat. A locking structure for locking the first connecting seat and / or the second connecting seat is further provided in the third connecting seat.

[0008] The first strip-shaped hole has a first upper side wall and a first lower side wall, the second strip-shaped hole has a second upper side wall and a second lower side wall, and the first upper side wall, the first lower side wall, the second upper side wall and the second lower side wall enclose an enclosing space for enclosing the pin shaft.

[0009] There are two first transmission pieces, and a spacing groove is formed between the two first transmission pieces. The second transmission piece is inserted into the spacing groove so that the second strip-shaped hole is in communication and cooperation with the first strip-shaped hole.

[0010] The locking structure includes a first notch provided on the outer edge of the first transmission piece and a second notch provided on the outer edge of the second transmission piece. When the first connecting seat and the second connecting seat are in the unfolded state, the first notch and the second notch are butted to form a locking groove. A locking member capable of sliding therein and engaging or disengaging with the locking groove is provided in the third connecting seat. A driving member capable of driving the locking member to slide and disengage from the locking groove is connected to the third connecting seat. A return spring capable of pushing the locking member to reset is further provided in the third connecting seat.

[0011] The locking member includes a slider capable of sliding in the third connecting seat, and a locking block capable of engaging or disengaging with the locking groove is provided at the upper end of the slider.

[0012] The driving member includes a pull rope passing through the return spring and connected to the slider.

[0013] A child stroller frame includes the joint structure of the child stroller as described above. A push rod assembly is connected to the upper end of the first connecting seat, a front leg is connected to the lower end of the second connecting seat, a front wheel is connected to the lower end of the front leg, a rear leg is connected to the lower end of the third connecting seat, and a rear wheel is connected to the lower end of the rear leg.

[0014] A seat assembly capable of rotating relative thereto and folding is further connected to the inner side of the third connecting seat.

[0015] Compared with the prior art, the present utility model has the following advantages: When the first connecting seat of the joint structure of the child stroller of the present utility model rotates relative to the third connecting seat, the hole wall of the first strip-shaped hole on the first transmission piece applies a force to the pin shaft to push the pin shaft, and the pin shaft slides in the linear groove of the third connecting seat. During the sliding process of the pin shaft, the pin shaft pushes the hole wall of the second strip-shaped hole on the second transmission piece, so that the second transmission piece and the second connecting seat rotate relative to the third connecting seat. Therefore, during the rotation of the first connecting seat relative to the third connecting seat, the second connecting seat is realized to be linked relative to the third connecting seat. The whole structure is simple and compact, the unfolding or folding movement is flexible. After applying this joint structure to the child stroller, the child stroller can also be folded and unfolded flexibly, which is suitable for popularization and application.

Description of the Drawings

[0016] Figure 1 is a perspective view of the joint structure of the child stroller of the present utility model;

[0017] Figure 2 is one of the exploded views of the joint structure of the child stroller of the present utility model;

[0018] Figure 3 It is the second exploded view of the joint structure of the baby carriage of the present utility model;

[0019] Figure 4 It is the third exploded view of the joint structure of the baby carriage of the present utility model;

[0020] Figure 5 It is the sectional view of the joint structure of the baby carriage of the present utility model;

[0021] Figure 6 It is the schematic view during the folding process of the joint structure of the baby carriage of the present utility model;

[0022] Figure 7 It is the side view of the framework of the baby carriage of the present utility model.

Detailed implementation manners

[0023] The present utility model will be further described below in conjunction with the accompanying drawings:

[0024] As Figures 1 to 6 shown, a joint structure 100 of a baby carriage includes a third connecting seat 3. A first connecting seat 1 is rotatably connected to the third connecting seat 3 around a first axis A, and a second connecting seat 2 is also rotatably connected to the third connecting seat 3 around a second axis B. A first transmission piece 11 is fixedly connected to the first connecting seat 1, and a second transmission piece 22 is fixedly connected to the second connecting seat 2. A first strip-shaped hole 111 is provided on the first transmission piece 11, and a second strip-shaped hole 222 communicating with the first strip-shaped hole 111 is provided on the second transmission piece 22. A straight groove 31 is provided on the third connecting seat 3, and a pin shaft 4 passing through both the first strip-shaped hole 111 and the second strip-shaped hole 222 is provided in the straight groove 31. The pin shaft 4 is slidably connected to the third connecting seat 3, so that when the first connecting seat 1 rotates and unfolds or folds relative to the third connecting seat 3, the pin shaft 4 drives the second connecting seat 2 to rotate and unfold or fold relative to the third connecting seat 3. A locking structure 5 for locking the first connecting seat 1 and / or the second connecting seat 2 is further provided in the third connecting seat 3. When the first connecting seat 1 rotates relative to the third connecting seat 3, the hole wall of the first strip-shaped hole 111 on the first transmission piece 11 applies a force to the pin shaft 4 to push the pin shaft 4, and the pin shaft 4 slides in the straight groove 31 of the third connecting seat 3. During the sliding process of the pin shaft 4, it pushes the hole wall of the second strip-shaped hole 222 on the second transmission piece 22, so that the second transmission piece 22 and the second connecting seat 2 rotate relative to the third connecting seat 3. Therefore, during the rotation of the first connecting seat 1 relative to the third connecting seat 3, the second connecting seat 2 is realized to be linked relative to the third connecting seat 3. The whole structure is simple and compact, and the unfolding or folding movement is flexible.

[0025] As Figure 4 and Figure 5As shown, the first elongated hole 111 has a first upper side wall 111a and a first lower side wall 111b, and the second elongated hole 222 has a second upper side wall 222a and a second lower side wall 222b. The first upper side wall 111a, the first lower side wall 111b, the second upper side wall 222a, and the second lower side wall 222b enclose an enclosing space for enclosing the pin shaft 4. Therefore, when the first connecting seat 1 rotates and folds relative to the third connecting seat 3, the first lower side wall 111b pushes against the pin shaft 4. Due to the limitation of the movement track of the pin shaft 4 by the straight groove 31, the pin shaft 4 can push the second upper side wall 222a, so that the second transmission piece 22 rotates relative to the third connecting seat 3, and further the second connecting seat 2 fixedly connected to the second transmission piece 22 rotates and folds relative to the third connecting seat 3. When the first connecting seat 1 rotates and unfolds relative to the third connecting seat 3, the first upper side wall 111a pushes against the pin shaft 4. Due to the limitation of the movement track of the pin shaft 4 by the straight groove 31, the pin shaft 4 can push the second lower side wall 222b, so that the second transmission piece 22 rotates relative to the third connecting seat 3, and further the second connecting seat 2 fixedly connected to the second transmission piece 22 rotates and unfolds relative to the third connecting seat 3.

[0026] As Figure 4 shown, there are two first transmission pieces 11. An interval groove 7 is formed between the two first transmission pieces 11. The second transmission piece 22 is inserted into the interval groove 7 so that the second elongated hole 222 is in communication and cooperation with the first elongated hole 111. The second transmission piece 22 is inserted into the interval groove 7 and is connected and cooperated with the first transmission piece 11 through the pin shaft 4. The groove wall of the interval groove 7 can be in surface contact with the second transmission piece 22, playing a guiding role during the relative rotation of the first transmission piece 11 and the second transmission piece 22, making the rotation of the first connecting seat 1 and the second connecting seat 2 relative to the third connecting seat 3 smooth and stable.

[0027] As Figures 2 to 5As shown, the locking structure 5 includes a first notch 51 provided on the outer edge of the first transmission piece 11 and a second notch 52 provided on the outer edge of the second transmission piece 22. When the first connecting seat 1 and the second connecting seat 2 are in the unfolded state, the first notch 51 and the second notch 52 are butted to form a locking groove 53. A locking member 54 that can slide therein and engage or disengage with the locking groove 53 is provided in the third connecting seat 3. The locking member 54 includes a slider 541 that can slide in the third connecting seat 3. A locking block 542 that can engage or disengage with the locking groove 53 is provided at the upper end of the slider 541. A driving member 55 that can drive the locking member 54 to slide and disengage from the locking groove 53 is connected to the third connecting seat 3. A return spring 56 that can push the locking member 54 to reset is also provided in the third connecting seat 3. The driving member 55 includes a pull rope 551 that passes through the return spring 56 and is connected to the slider 541. When the locking block 542 engages with the locking groove 53, the first connecting seat 1 and the second connecting seat 2 cannot rotate. By pulling the pull rope 551, the slider 541 can slide relative to the third connecting seat 3. At this time, the locking block 542 at the upper end of the slider 541 disengages from the locking groove 53, and at this time, the locking structure 5 is unlocked, and the first connecting seat 1 and the second connecting seat 2 can be rotated and folded together.

[0028] A child stroller frame includes the joint structure 100 of the child stroller as described above. A push rod assembly 200 is connected to the upper end of the first connecting seat 1. A front leg 300 is connected to the lower end of the second connecting seat 2. A front wheel 301 is connected to the lower end of the front leg 300. A rear leg 400 is connected to the lower end of the third connecting seat 3. A rear wheel 401 is connected to the lower end of the rear leg 400. After the locking structure 5 is unlocked, by rotating the push rod assembly 200 backward, the front leg 300 can be rotated and closed toward the rear leg 400. Finally, both the push rod assembly 200 and the front leg 300 are closed against the rear leg 400, thereby realizing folding, and the entire folding process is very convenient and fast. For convenient unlocking operation, an exposed handle can be provided on the rear leg 400 and connected to the pull rope 551. By operating the handle, the pull rope 551 can be pulled to move, so that the locking member 54 disengages from the locking groove 53.

[0029] As Figure 7 As shown, a seat assembly 500 that can rotate relative to it and can be folded is also connected to the inner side of the third connecting seat 3. The seat assembly 500 can be used for a child to sit on. When the seat assembly 500 is not provided, a flexible seat pocket can be provided on the push rod assembly 200 for the child to sit on. In this embodiment, the seat assembly 500 is connected to the inner side of the third connecting seat 3. Therefore, when the child stroller frame is folded, the seat assembly 500 is folded first, and the seat assembly 500 is rotated and closed against the front leg 300 relative to the third connecting seat 3. Finally, the push rod assembly 200 is rotated for folding. The seat assembly 500 can adopt a traditional seat structure, which will not be elaborated here.

[0030] The above has described this embodiment in detail with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiment, and various changes can be made without departing from the gist thereof within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. A joint structure (100) of a baby stroller, characterized in that: It includes a third connecting seat (3). A first connecting seat (1) is rotatably connected to the third connecting seat (3) about a first axis (A). A second connecting seat (2) is also rotatably connected to the third connecting seat (3) about a second axis (B). A first transmission piece (11) is fixedly connected to the first connecting seat (1). A second transmission piece (22) is fixedly connected to the second connecting seat (2). A first strip-shaped hole (111) is provided on the first transmission piece (11). A second strip-shaped hole (222) communicating with the first strip-shaped hole (111) is provided on the second transmission piece (22). A straight groove (31) is provided on the third connecting seat (3). A pin shaft (4) passing through the first strip-shaped hole (111) and the second strip-shaped hole (222) at the same time is provided in the straight groove (31). The pin shaft (4) is slidably connected to the third connecting seat (3) so that when the first connecting seat (1) rotates and unfolds or folds relative to the third connecting seat (3), the pin shaft (4) drives the second connecting seat (2) to rotate and unfold or fold relative to the third connecting seat (3). A locking structure (5) for locking the first connecting seat (1) and / or the second connecting seat (2) is further provided in the third connecting seat (3).

2. The joint structure (100) of the stroller according to claim 1, wherein: The first strip-shaped hole (111) has a first upper side wall (111a) and a first lower side wall (111b). The second strip-shaped hole (222) has a second upper side wall (222a) and a second lower side wall (222b). The first upper side wall (111a), the first lower side wall (111b), the second upper side wall (222a) and the second lower side wall (222b) enclose an enclosing space for enclosing the pin shaft (4).

3. The joint structure (100) of the stroller according to claim 2, characterized in that: There are two first transmission pieces (11). A spacing groove (7) is formed between the two first transmission pieces (11). The second transmission piece (22) is inserted into the spacing groove (7) so that the second strip-shaped hole (222) is in communication and cooperation with the first strip-shaped hole (111).

4. The joint structure (100) of a baby stroller according to any one of claims 1 to 3, characterized in that: The locking structure (5) includes a first notch (51) provided on the outer edge of the first transmission piece (11) and a second notch (52) provided on the outer edge of the second transmission piece (22). When the first connecting seat (1) and the second connecting seat (2) are in the unfolded state, the first notch (51) and the second notch (52) are docked to form a locking groove (53). A locking member (54) capable of sliding in the third connecting seat (3) and engaging or disengaging with the locking groove (53) is provided in the third connecting seat (3). A driving member (55) capable of driving the locking member (54) to slide and disengage from the locking groove (53) is connected to the third connecting seat (3). A return spring (56) capable of pushing the locking member (54) to reset is further provided in the third connecting seat (3).

5. The joint structure (100) of a baby stroller according to claim 4, characterized in that: The locking member (54) includes a slider (541) capable of sliding in the third connecting seat (3). A locking block (542) capable of engaging or disengaging with the locking groove (53) is provided at the upper end of the slider (541).

6. The joint structure (100) of the stroller according to claim 5, characterized in that: The driving member (55) includes a pull rope (551) passing through the return spring (56) and connected to the slider (541).

7. A stroller frame for children, characterized in that: Comprising a joint structure (100) of a stroller for children as described in any one of claims 1 to 6, a push rod assembly (200) is connected to the upper end of the first connecting seat (1), a front leg (300) is connected to the lower end of the second connecting seat (2), a front wheel (301) is connected to the lower end of the front leg (300), a rear leg (400) is connected to the lower end of the third connecting seat (3), and a rear wheel (401) is connected to the lower end of the rear leg (400).

8. The child stroller frame according to claim 7, characterized in that: A seat assembly (500) that can rotate relative to and fold with respect to the third connecting seat (3) is further connected to the inner side of the third connecting seat (3).

Images