Stroller frame

Abstract

The utility model discloses a stroller frame, which can move from an unfolding position to a folding position after a locking device is unlocked, and comprises a bottom support component, the bottom support component comprises a front frame and a rear frame which is rotatably connected with the front frame around a first axis A, wheels are arranged at the lower ends of the front frame and the rear frame, and the front frame and the rear frame are connected with the bottom support component. The upper end of the bottom supporting assembly is rotatably connected with a push rod assembly around a second axis B. A seat supporting assembly used for sitting is arranged between the front frame and the rear frame and comprises a supporting piece and a sliding piece capable of sliding along the rear frame, and the front end of the supporting piece is rotatably connected with the front frame around a third axis C. The rear end of the supporting piece is rotatably connected with the rear frame around a fourth axis D, and when the stroller frame moves from the unfolding position to the folding position, the sliding piece slides downwards from the position close to the upper end of the rear frame to the position close to the lower end of the rear frame. The folding chair is simple in structure and convenient to fold.

Description

[Technical field]

[0001] The utility model relates to a child stroller frame. [Background technology]

[0002] Strollers are common products for children during their growth. Currently, strollers on the market can generally be unfolded or folded. In the unfolded state, children can sit in the stroller, and adults can push the children out. In the folded state, the stroller can be easily stored and carried.

[0003] The structures of current baby strollers are various, and the folding or unfolding principles are different. There is still a lot of room for design in the structural design of baby strollers. The utility model provides a baby stroller frame that is different from the existing baby stroller structure. [Contents of the utility model]

[0004] The utility model aims to overcome the shortcomings of the prior art and provide a child stroller frame which has a simple structure and is easy to fold and operate.

[0005] The utility model is realized by the following technical solutions:

[0006] A child stroller frame, which can be moved from an unfolded position to a folded position after a locking device is unlocked, includes a bottom support assembly 1, the bottom support assembly 1 includes a front frame 11 and a rear frame 12 rotatably connected to the front frame 11 around a first axis A, the lower ends of the front frame 11 and the rear frame 12 are both provided with wheels 13, the upper end of the bottom support assembly 1 is rotatably connected to a push rod assembly 2 around a second axis B, a seat support assembly 3 for sitting is provided between the front frame 11 and the rear frame 12, the seat support assembly 3 includes a support member 31 and a sliding member 32 that can slide along the rear frame 12, the front end of the support member 31 is rotatably connected to the front frame 11 around a third axis C, the rear end of the support member 31 is rotatably connected to the rear frame 12 around a fourth axis D, and when the child stroller frame moves from the unfolded position to the folded position, the sliding member 32 slides downward from a position close to the upper end of the rear frame 12 to a position close to the lower end of the rear frame 12.

[0007] The support member 31 comprises a support plate 311 for sitting, and a connecting portion 312 protruding toward one side of the support plate 311 is provided at the front end thereof, and the connecting portion 312 is rotatably connected to the front frame 11 around the third axis C.

[0008] The sliding member 32 is a sliding sleeve mounted on the rear frame 12 , and the rear end of the support plate 311 is rotatably connected to the sliding sleeve around the fourth axis D.

[0009] The front frame 11 has an inserting position 14 inside, a detachable dining tray assembly 4 is inserted into the inserting position 14 , and the dining tray assembly 4 includes an inserting rod 41 that can be inserted into the inserting position 14 , and a dining tray body 42 is connected to the inserting rod 41 .

[0010] The dining plate body 42 is rotatably connected to the plug rod 41 around the fifth axis E.

[0011] The support plate 311 has a plurality of mounting holes 313 on the lower side thereof for mounting a storage basket.

[0012] The locking device includes a first connecting shell 51 arranged at the upper end of the front frame 11 and a second connecting shell 52 arranged at the lower end of the push rod assembly 2. The first connecting shell 51 and the second connecting shell 52 are both provided with a plurality of locking tooth grooves 53 along the circumferential direction. A locking member 54 is provided in the space enclosed by the first connecting shell 51 and the second connecting shell 52, which can move laterally therein and can simultaneously engage with the locking tooth grooves 53 on the first connecting shell 51 and the second connecting shell 52. A rotating block 55 is provided between the locking member 54 and the first connecting shell 51, which can rotate and push the locking member 54 to disengage from the locking tooth grooves 53 on the first connecting shell 51 when rotating. A driving assembly 56 that can pull the rotating block 55 to rotate is provided on the push rod assembly 2. A first spring 57 that can push the locking member 54 to move laterally and reset is also provided between the locking member 54 and the second connecting shell 52.

[0013] The driving assembly 56 includes a pull rope 561 connected to an eccentric position of the rotating block 55, a fixed seat 562 is provided at the upper end of the push rod assembly 2, and an operating block 563 exposed and slidable relative to the fixed seat 562 is provided inside the fixed seat 562. The operating block 563 is connected to the pull rope 561 and pulls the rotating block 55 to rotate through the pull rope 561 when sliding relative to the fixed seat 562.

[0014] The first axis A is colinear with the second axis B, a third connecting shell 121 is provided at the upper end of the rear frame 12, the third connecting shell 121, the second connecting shell 52 and the first connecting shell 51 are coaxially connected, a transverse fixed shaft 63 is provided on the third connecting shell 121, a second arc-shaped limiting hole 62 for the fixed shaft 63 to pass through is provided on the second connecting shell 52 along the circumferential direction, and a first arc-shaped limiting hole 61 for the fixed shaft 63 to pass through is provided on the first connecting shell 51 along the circumferential direction.

[0015] The locking piece 54 includes a main body 541, on which a plurality of teeth 542 capable of engaging with the locking tooth grooves 53 are provided, and a plurality of inclined protrusions 543 are also provided on the main body 541 along the circumferential direction, and the rotating block 55 is provided with an inclined groove 551 which cooperates with the inclined protrusion 543 and can push the inclined protrusion 543 through the groove wall when the rotating block 55 rotates.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] 1. When the stroller frame of the utility model is folded, the locking device is first unlocked, and then the push rod assembly is rotated around the second axis so that the push rod assembly rotates and approaches the rear frame, and then the sliding member slides downward along the rear frame. During the sliding process, the front end of the support member and the front frame rotate relative to each other around the third axis and can pull the front frame to rotate and approach the rear frame around the first axis. During this process, the rear end of the support member also rotates relative to the sliding member around the fourth axis. Finally, the push rod assembly, the front frame, and the support member are all close to the rear frame, thereby realizing the folding of the stroller frame. The folding is very convenient and quick, and the entire stroller frame has a simple structure, a few connecting rods, and a relatively low cost.

[0018] 2. A dining tray assembly is detachably plugged into the front frame of the utility model. Therefore, the frame of the child stroller of the utility model can also be used as a dining chair, and children can conveniently eat while sitting on it. Moreover, when an adult pushes the stroller, the main body of the dining tray can also be used as an armrest. Children can hold the inner edge of the main body of the dining tray or place both sides on the main body of the dining tray, which can also ensure the safety of the child stroller during the pushing process.

[0019] 3. The utility model has a simple and compact structure and is flexible to fold and unfold, and is suitable for popularization and application.

Brief Description of the Drawings

[0020] Figure 1 It is a three-dimensional diagram of the utility model in the unfolded state;

[0021] Figure 2 It is a side view of the utility model in the unfolded state;

[0022] Figure 3 It is a side view of the utility model during the folding process;

[0023] Figure 4 It is one of the three-dimensional diagrams of the utility model during the folding process;

[0024] Figure 5 This is the second stereoscopic diagram of the utility model during the folding process;

[0025] Figure 6 It is a side view of the utility model in a folded state;

[0026] Figure 7 It is one of the three-dimensional diagrams of the components of the utility model;

[0027] Figure 8 This is the second stereogram of the components of the utility model;

[0028] Fig. 9 It is the third stereogram of the components of the utility model. [Specific implementation method]

[0029] The utility model is further described below in conjunction with the accompanying drawings:

[0030] like Figures 1 to 6 As shown, a child stroller frame can be moved from an unfolded position to a folded position after a locking device is unlocked, comprising a bottom support assembly 1, wherein the bottom support assembly 1 comprises a front frame 11 and a rear frame 12 rotatably connected to the front frame 11 around a first axis A, the lower ends of the front frame 11 and the rear frame 12 are both provided with wheels 13, the upper end of the bottom support assembly 1 is rotatably connected to a push rod assembly 2 around a second axis B, a seat support assembly 3 for sitting is provided between the front frame 11 and the rear frame 12, the seat support assembly 3 comprises a support member 31 and a sliding member 32 that can slide along the rear frame 12, the front end of the support member 31 is rotatably connected to the front frame 11 around a third axis C, the rear end of the support member 31 is rotatably connected to the rear frame 12 around a fourth axis D, and when the child stroller frame moves from the unfolded position to the folded position, the sliding member 32 slides downward from a position close to the upper end of the rear frame 12 to a position close to the lower end of the rear frame 12. When the child stroller frame is folded, the locking device is first unlocked, and then the push rod assembly 2 is rotated around the second axis B so that the push rod assembly 2 rotates and approaches the rear frame 12, and then the sliding member 32 slides downward along the rear frame 12. During the sliding process, the front end of the support member 31 rotates relative to the front frame 11 around the third axis C and can pull the front frame 11 to rotate and approach the rear frame 12 around the first axis A. In this process, the rear end of the support member 31 also rotates relative to the sliding member 32 around the fourth axis D. Finally, the push rod assembly 2, the front frame 11, and the support member 31 are all close to the rear frame 12, thereby realizing the folding of the child stroller frame, and the folding operation is very convenient and quick.

[0031] like Figure 1 As shown, the support member 31 includes a support plate 311 for sitting, and a connecting portion 312 protruding to one side of the support plate 311 is provided at the front end thereof. The connecting portion 312 is rotatably connected to the front frame 11 around the third axis C to ensure that the stroller frame is smooth and flexible during folding.

[0032] like Figures 3 to 5As shown, the sliding member 32 is a sliding sleeve mounted on the rear frame 12 to ensure that the sliding member 32 slides smoothly along the rear frame 12, and the rear end of the support plate 311 is rotatably connected to the sliding sleeve around the fourth axis D. In this embodiment, the rear end of the support plate 311 is connected to a cross bar 314, which is rotatably connected to the sliding sleeve through the cross bar 314.

[0033] like Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, the front frame 11 is provided with a plug-in position 14 on the inner side, and a detachable dining tray assembly 4 is plugged into the plug-in position 14. The dining tray assembly 4 includes a plug-in rod 41 that can be plugged into the plug-in position 14, and a dining tray body 42 is connected to the plug-in rod 41. Therefore, the child stroller frame of this embodiment can be used as a dining chair, and children can also eat conveniently when sitting on it. Moreover, when adults push the stroller, the dining tray body 42 can also be used as an armrest, and children can grab the inner edge of the dining tray body 42 or both sides and rest on the dining tray body 42, which can also ensure the safety of the child stroller during the pushing process. In addition, the dining tray assembly 4 can be disassembled by plugging and unplugging the plug-in rod 41, which is convenient for cleaning the dining tray body 42.

[0034] like Figure 1 , Figure 2 and Figure 6 As shown, the dining tray body 42 is rotatably connected to the plug rod 41 around the fifth axis E. Therefore, when the stroller frame is folded, the dining tray body 42 can be rotated around the fifth axis E to bring the dining tray body 42 closer to the front frame 11, ensuring that the stroller frame folded occupies less space. A locking structure such as a latch and a socket can be provided between the dining tray body 42 and the plug rod 41, which will not be described in detail here.

[0035] like Figure 1 and Figure 2 As shown, the lower side of the support plate 311 is provided with a plurality of hanging holes 313 (not shown in the figure) for hanging a storage basket, and the storage basket can be hung under the support plate 311, so that the user can carry diapers and other items when pushing the stroller.

[0036] like Figures 7 to 9As shown, the locking device includes a first connecting shell 51 provided at the upper end of the front frame 11 and a second connecting shell 52 provided at the lower end of the push rod assembly 2, and the first connecting shell 51 and the second connecting shell 52 are both provided with a plurality of locking tooth grooves 53 along the circumferential direction, and a locking member 54 is provided in the space enclosed by the first connecting shell 51 and the second connecting shell 52, which can move laterally therein and can be engaged with the locking tooth grooves 53 on the first connecting shell 51 and the second connecting shell 52 at the same time, and a locking member 54 is provided between the locking member 54 and the first connecting shell 51, which can rotate and can push the locking member 54 to engage with the locking tooth groove on the first connecting shell 51 when rotating. The push rod assembly 2 is provided with a driving assembly 56 capable of pulling the rotating block 55 to rotate, and a first spring 57 capable of pushing the locking member 54 to move laterally and reset is also provided between the locking member 54 and the second connecting shell 52. The locking member 54 includes a main body 541, and the main body 541 is provided with a plurality of teeth 542 capable of engaging with the locking tooth groove 53. The main body 541 is also provided with a plurality of inclined protrusions 543 along the circumferential direction. The rotating block 55 is provided with an inclined groove 551 which cooperates with the inclined protrusion 543 and can push the inclined protrusion 543 through the groove wall when the rotating block 55 rotates. When the locking device needs to be unlocked, the driving assembly 56 drives the rotating block 55 to rotate. During the rotation process, the rotating block 55 pushes the oblique protrusion 543 on the locking member 54 through the groove wall of the oblique groove 551 thereon, so that the locking member 54 moves laterally and disengages from the locking tooth groove 53 on the first connecting shell 51. At this time, the push rod assembly 2 can be rotated to move closer to the rear frame 12. When the push rod assembly 2 rotates to the set position, the inner side of the dining tray body 42 can be grasped and the entire child stroller frame can be lifted. Under the action of gravity, the rear end of the support plate 311 and the sliding sleeve will move toward the lower end of the rear frame 12, and the front frame 11 will be pulled and move closer to the rear frame 12, and finally the child stroller frame can be folded. Therefore, after unlocking, the push rod assembly 2 only needs to be rotated and the dining tray body 42 can be lifted to realize the folding of the child stroller frame, which is very convenient and quick to operate.

[0037] like Figure 8 and Fig. 9 As shown, the driving assembly 56 includes a pull cord 561 connected to the eccentric position of the rotating block 55, and the upper end of the push rod assembly 2 is provided with a fixed seat 562. The fixed seat 562 is provided with an operating block 563 that is exposed and can slide relative to it. The operating block 563 is connected to the pull cord 561 and pulls the rotating block 55 to rotate through the pull cord 561 when sliding relative to the fixed seat 562. When the user pinches the operating block 563, the operating block 563 can pull the rotating block 55 to rotate through the pull cord 561, so that the locking member 54 is disengaged from the locking tooth groove 53 on the first connecting shell 51, and unlocking is achieved.

[0038] like Fig. 9As shown, the fixed seat 562 includes a front seat body 5621 and a rear seat body 5622 clamped on the push rod assembly 2, the operating block 563 is arranged between the front seat body 5621 and the rear seat body 5622, the fixed seat 562 is provided with a second lock push button 71 that can slide relative to it, the second lock push button 71 is provided with a blocking rod 72 that can abut against the operating block 563 to prevent the operating block 563 from sliding relative to the fixed seat 562, the operating block 563 is also provided with a making way groove 73 that can make way for the blocking rod 72 after the second lock push button 71 slides relative to the fixed seat 562, and a second spring 74 that can push the second lock push button 71 to return to its original position is also provided between the fixed seat 562 and the second lock push button 71. Because of the blocking of the blocking rod 72, before the blocking rod 72 is aligned with the yielding groove 73 on the operating block 563, the operating block 563 cannot slide relative to the fixed seat 562, and cannot pull the rotating block 55 to rotate, and cannot achieve unlocking. Only when the second-stage lock push button 71 is pushed, the blocking rod 72 is aligned with the yielding groove 73. At this time, due to the yielding of the yielding groove 73, the operating block 563 can slide and pull the rotating block 55 to rotate, thereby achieving unlocking. Therefore, after the second-stage lock push button 71 and the blocking rod 72 are set, the situation of misoperation of the operating block 563 causing mislocking can be prevented, ensuring safety.

[0039] like Figure 2 , Figure 7 and Figure 8 As shown, the first axis A and the second axis B are colinear, a third connecting shell 121 is provided at the upper end of the rear frame 12, the third connecting shell 121, the second connecting shell 52 and the first connecting shell 51 are coaxially connected, a transverse fixed shaft 63 is provided on the third connecting shell 121, a second arc-shaped limiting hole 62 for the fixed shaft 63 to pass through is provided on the second connecting shell 52 along the circumferential direction, and a first arc-shaped limiting hole 61 for the fixed shaft 63 to pass through is provided on the first connecting shell 51 along the circumferential direction. The setting of the fixed shaft 63, the first arc-shaped limiting hole 61 and the second arc-shaped limiting hole 62 can limit the rotation angle of the push rod assembly 2 and the front frame 11, play a role of limiting, and facilitate the user to fold or unfold.

[0040] The embodiment is described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiment, and various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the present purpose.

Claims

1. A child stroller frame, which can be moved from an unfolded position to a folded position after a locking device is unlocked, characterized in that: The invention comprises a bottom support assembly (1), wherein the bottom support assembly (1) comprises a front frame (11) and a rear frame (12) rotatably connected to the front frame (11) around a first axis (A), the lower ends of the front frame (11) and the rear frame (12) are both provided with wheels (13), the upper end of the bottom support assembly (1) is rotatably connected to a push rod assembly (2) around a second axis (B), a seat support assembly (3) for riding is provided between the front frame (11) and the rear frame (12), and the seat The support assembly (3) comprises a support member (31) and a sliding member (32) capable of sliding along the rear frame (12); the front end of the support member (31) is rotatably connected to the front frame (11) around a third axis (C); the rear end of the support member (31) is rotatably connected to the rear frame (12) around a fourth axis (D); and when the child stroller frame moves from an unfolded position to a folded position, the sliding member (32) slides downward from a position close to the upper end of the rear frame (12) to a position close to the lower end of the rear frame (12).

2. The child stroller frame according to claim 1, characterized in that: The support member (31) comprises a support plate (311) for sitting, the front end of the support plate (311) is provided with a connecting portion (312) protruding toward one side thereof, and the connecting portion (312) is rotatably connected to the front frame (11) around the third axis (C).

3. The child stroller frame according to claim 2, characterized in that: The sliding member (32) is a sliding sleeve sleeved on the rear frame (12), and the rear end of the support plate (311) is rotatably connected to the sliding sleeve around the fourth axis (D).

4. The child stroller frame according to claim 1, characterized in that: The front frame (11) is provided with a plug-in position (14) on the inner side, a detachable dining tray assembly (4) is plugged into the plug-in position (14), the dining tray assembly (4) comprises a plug-in rod (41) which can be plugged into the plug-in position (14), and a dining tray body (42) is connected to the plug-in rod (41).

5. The child stroller frame according to claim 4, characterized in that: The dining plate body (42) is rotatably connected to the plug-in rod (41) around a fifth axis (E).

6. The child stroller frame according to claim 2, characterized in that: The lower side of the support plate (311) is provided with a plurality of hanging holes (313) for hanging a storage basket.

7. The child stroller frame according to any one of claims 1 to 6, characterized in that: The locking device comprises a first connecting shell (51) arranged at the upper end of the front frame (11) and a second connecting shell (52) arranged at the lower end of the push rod assembly (2), the first connecting shell (51) and the second connecting shell (52) are both provided with a plurality of locking tooth grooves (53) along the circumferential direction, and a locking tooth groove (53) which can move laterally therein and can be simultaneously engaged with the locking tooth grooves (53) on the first connecting shell (51) and the second connecting shell (52) is provided in the space enclosed by the first connecting shell (51) and the second connecting shell (52). A locking member (54) is provided between the locking member (54) and the first connecting shell (51), a rotating block (55) is provided between the locking member (54) and the first connecting shell (51) and can push the locking member (54) to disengage from the locking tooth groove (53) on the first connecting shell (51) when rotating, a driving assembly (56) is provided on the push rod assembly (2) and can pull the rotating block (55) to rotate, and a first spring (57) is also provided between the locking member (54) and the second connecting shell (52) and can push the locking member (54) to move horizontally and reset.

8. The child stroller frame according to claim 7, characterized in that: The driving assembly (56) includes a pull rope (561) connected to an eccentric position of the rotating block (55); a fixed seat (562) is provided at the upper end of the push rod assembly (2); an operating block (563) is provided inside the fixed seat (562) and is exposed and can slide relative to the fixed seat; the operating block (563) is connected to the pull rope (561) and pulls the rotating block (55) to rotate through the pull rope (561) when sliding relative to the fixed seat (562).

9. The child stroller frame according to claim 7, characterized in that: The first axis (A) and the second axis (B) are colinear, a third connecting shell (121) is provided at the upper end of the rear frame (12), the third connecting shell (121), the second connecting shell (52) and the first connecting shell (51) are coaxially connected, a transverse fixed shaft (63) is provided on the third connecting shell (121), a second arc-shaped limiting hole (62) for the fixed shaft (63) to pass through is provided on the second connecting shell (52) along the circumferential direction, and a first arc-shaped limiting hole (61) for the fixed shaft (63) to pass through is provided on the first connecting shell (51) along the circumferential direction.

10. The child stroller frame according to claim 7, characterized in that: The locking member (54) comprises a main body (541), the main body (541) is provided with a plurality of teeth (542) which can engage with the locking tooth groove (53), the main body (541) is also provided with a plurality of inclined protrusions (543) along the circumferential direction, and the rotating block (55) is provided with an inclined groove (551) which cooperates with the inclined protrusion (543) and can push the inclined protrusion (543) through the groove wall when the rotating block (55) rotates.

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