Seat pocket mechanism

Abstract

The utility model discloses a seat pocket mechanism, and relates to the field of stroller. According to the technical scheme, the chair is characterized by comprising two first pivoting parts, an upper enclosure frame, a lower enclosure frame, a protective enclosure frame, a first supporting rod, two second pivoting parts, two first connecting rods, two second connecting rods, a backrest enclosure frame, a second supporting rod, a first locking assembly and a second locking assembly; when the seat pocket mechanism is folded, the first locking assembly is controlled to enable the first pivoting part to be switched to a movable state, then the lower enclosure frame is rotated in the direction close to the upper enclosure frame, the lower enclosure frame drives the first connecting rod, the second pivoting part, the second connecting rod and the backrest enclosure frame to rotate in the rotating process, and folding of the seat pocket mechanism is achieved; the second locking assembly is controlled to enable the second pivoting part to be switched to the movable state, and then the backrest surrounding frame is rotated to adjust the backrest angle. The child seat can be folded, the angle of the backrest can be adjusted, the size can be reduced, storage is convenient, multiple different sitting postures can be conveniently provided, and the sitting experience of children is improved.

Description

Technical Field

[0001] The utility model relates to the field of baby strollers, and more specifically, it relates to a seat pocket mechanism. Background Art

[0002] A baby stroller includes a movable frame and a seat pocket mounted on the movable frame.

[0003] A Chinese patent with the authorized announcement number CN203698362U discloses a baby stroller, which includes a stroller frame, a front wheel assembly, a rear wheel assembly, and a seat pocket assembly. The stroller frame has a deployed position and a folded position; the stroller frame includes a push handle bar, and the seat pocket assembly is fixedly connected to the push handle bar.

[0004] In the above patent, the stroller frame can be folded, but the seat pocket assembly is still in the deployed state, resulting in a relatively large volume of the baby stroller and affecting storage. Summary of the Utility Model

[0005] Aiming at the deficiencies of the existing technology, the purpose of the present utility model is to provide a seat pocket mechanism, which can be folded and the backrest angle can be adjusted respectively; folding the seat pocket mechanism can reduce the volume and facilitate storage; adjusting the backrest angle of the seat pocket mechanism can conveniently provide a variety of different sitting postures and improve the riding experience of children.

[0006] To achieve the above purpose, the present utility model provides the following technical solutions:

[0007] A seat pocket mechanism, comprising:

[0008] Two symmetrically and coaxially arranged first pivot parts;

[0009] An upper surrounding frame and a lower surrounding frame respectively connected to the two first pivot parts;

[0010] Two symmetrically and coaxially arranged second pivot parts;

[0011] Two first connecting rods, one end of the first connecting rod is connected to the second pivot part, and the other end is hinged to the lower surrounding frame;

[0012] Two second connecting rods, one end of the second connecting rod is connected to the second pivot part, and the other end is hinged to the upper surrounding frame;

[0013] A backrest surrounding frame respectively connected to the two second pivot parts;

[0014] A first locking assembly, which acts on the first pivot part to enable the first pivot part to switch between a locked state and an active state; and,

[0015] A second locking component, which acts on the second pivoting part to enable the second pivoting part to switch between a locked state and an active state;

[0016] Wherein, the seat pocket mechanism can be folded and the backrest angle can be adjusted respectively;

[0017] Folding: Control the first locking component to switch the first pivoting part to the active state, and then rotate the lower surrounding frame towards the upper surrounding frame. During the rotation of the lower surrounding frame, the first connecting rod, the second pivoting part, the second connecting rod and the backrest surrounding frame are driven to rotate, realizing the folding of the seat pocket mechanism;

[0018] Backrest angle adjustment: Control the second locking component to switch the second pivoting part to the active state, and then rotate the backrest surrounding frame to adjust the backrest angle.

[0019] Furthermore, the first pivoting part includes a first inner end cover, a first pivoting ring, a second pivoting ring and a first outer end cover arranged in sequence along the axial direction; the lower surrounding frame is respectively connected to the two first pivoting rings, and the upper surrounding frame is respectively connected to the two second pivoting rings;

[0020] The seat pocket mechanism further includes a protective surrounding frame respectively connected to the two first inner end covers;

[0021] Wherein, the lower surrounding frame drives the first pivoting ring to rotate, the first pivoting ring drives the first inner end cover to rotate, and the first inner end cover drives the protective surrounding frame to rotate, realizing the folding and unfolding of the protective surrounding frame.

[0022] Furthermore, a positioning support plate is arranged on the inner end face of the first inner end cover, a first arc groove cooperating with the positioning support plate is arranged on the inner side wall of the first pivoting ring, and a second arc groove cooperating with the positioning support plate is arranged on the end face of the second pivoting ring;

[0023] The first arc groove includes a first inner end face and a second inner end face, the second arc groove includes a third inner end face and a fourth inner end face, and the first inner end face and the third inner end face are located on the same circumferential side;

[0024] Wherein, the first inner end face and the second inner end face of the first pivoting ring can respectively contact the positioning support plate to drive the rotation of the first inner end cover; the first inner end face cooperates with the fourth inner end face, and the second inner end face cooperates with the third inner end face to respectively realize the limit of the positioning support plate.

[0025] Furthermore, an axially extending part embedded in the first pivoting ring is arranged on the end face of the second pivoting ring, an elastic positioning pin is arranged on the inner side wall of the first pivoting ring, and two positioning grooves respectively cooperating with the elastic positioning pin are arranged on the outer side wall of the axially extending part; the two positioning grooves respectively correspond to the folded state and the unfolded state of the seat pocket mechanism.

[0026] Further, the first pivoting portion further includes a first gear ring disposed between the second pivoting ring and the first outer end cover, and a first spring disposed between the first gear ring and the first outer end cover; a first tooth groove and a second tooth groove that cooperate with the first gear ring are respectively disposed on the end face of the second pivoting ring and the end face of the first outer end cover;

[0027] The first gear ring is axially movable and includes a first position close to the second pivoting ring and a second position close to the first outer end cover; in the first position, the first gear ring is respectively embedded in the first tooth groove and the second tooth groove; in the second position, the first gear ring disengages from the first tooth groove and is embedded in the second tooth groove;

[0028] The elastic force of the first spring causes the first gear ring to tend to move from the second position to the first position;

[0029] In the deployed state, the first gear ring is located at the first position; during the folding process, the first inner end cover can drive the first gear ring to move from the first position to the second position; in the folded state, the first gear ring is located at the second position.

[0030] Further, a first driving plate that contacts the first gear ring is disposed on the first inner end cover, and a first driving inclined surface is disposed on the first driving plate and / or the first gear ring, and the axial movement of the first gear ring is realized through the first driving inclined surface.

[0031] Further, a first support arm embedded in the lower surrounding frame is disposed on the first pivoting ring; the first locking assembly includes a locking rod movably embedded in the first support arm; a first locking half groove and a second locking half groove that cooperate with the locking rod are respectively disposed on the first pivoting ring and the second pivoting ring;

[0032] When the locking rod is embedded in the first locking half groove and the second locking half groove, the first pivoting portion is in a locked state; when the locking rod disengages from the first locking half groove and the second locking half groove, the first pivoting portion is in an active state.

[0033] Further, the first locking assembly further includes a locking button movably disposed in the first support arm, and a second spring acting on the locking rod; a driving shaft is disposed on the side wall of the first support arm, and a driving inclined groove that cooperates with the driving shaft is disposed on the locking button;

[0034] The elastic force of the second spring causes the locking rod to tend to be embedded in the first locking half groove and the second locking half groove;

[0035] Press the locking button, and drive the locking rod to move away from the first locking half groove and the second locking half groove through the driving inclined groove and the driving shaft.

[0036] Further, the second pivoting portion comprises a second inner end cover, a third pivoting ring and a second outer end cover which are sequentially arranged in the axial direction, and further comprises a second gear ring arranged between the third pivoting ring and the second outer end cover;

[0037] The first connecting rod is connected to the second inner end cover, the second connecting rod is connected to the second outer end cover, and the backrest frame is connected to two third pivot rings respectively;

[0038] The end surface of the third pivot ring and the inner end surface of the second outer end cover are respectively provided with a third tooth groove and a fourth tooth groove cooperating with the second gear ring;

[0039] The second gear ring is capable of moving axially and includes a third position close to the third pivot ring and a fourth position close to the second outer end cover; in the third position, the second gear ring is respectively embedded in the third tooth groove and the fourth tooth groove; in the fourth position, the second gear ring is disengaged from the third tooth groove and embedded in the fourth tooth groove.

[0040] Furthermore, the second pivoting portion further comprises a third spring disposed between the second gear ring and the second outer end cover, and a driving ring disposed between the third pivoting ring and the second gear ring; the elastic force of the third spring causes the second gear ring to have a tendency to move from the fourth position to the third position;

[0041] The third pivot ring and / or the drive ring is provided with a second drive inclined surface; the drive ring is moved axially when rotating through the second drive inclined surface;

[0042] The second locking assembly includes a cable and a locking switch connected to one end of the cable, and the other end of the cable extends into the third pivot ring and is connected to the drive ring;

[0043] Applying tension to the cable through the locking switch, and driving the driving ring to rotate, the driving ring moves axially during the rotation, thereby pushing the second gear ring to move from the third position to the fourth position, at which time the second pivoting portion is in an active state;

[0044] The cable is released by the locking switch, and the second gear ring moves from the fourth position to the third position under the elastic force of the third spring, and the second pivoting portion is in a locked state.

[0045] In summary, the utility model has the following beneficial effects:

[0046] 1. The seat pocket mechanism can be folded and the backrest angle can be adjusted separately; folding the seat pocket mechanism can reduce the volume and facilitate storage; adjusting the backrest angle of the seat pocket mechanism can provide a variety of different sitting postures and improve the riding experience of children;

[0047] 2. The first pivot part is used to realize the folding of the seat pocket mechanism, the second pivot part is used to realize the adjustment of the backrest angle of the seat pocket mechanism, and the link structure is used to realize the folding of the backrest frame. This not only enables the seat pocket mechanism to have two functions of being foldable and the backrest angle adjustable at the same time, but also has a simple and ingenious structure and is convenient to operate.

[0048] 3. The folding and unfolding of the protective frame are realized in a linkage manner, which can simplify the structure, is convenient to operate, and optimizes the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 Structural schematic diagram of the seat pocket mechanism in the unfolded state in the embodiment Figure 1 ;

[0050] Figure 2 Structural schematic diagram of the seat pocket mechanism in the folded state in the embodiment Figure 1 ;

[0051] Figure 3 Structural schematic diagram of the seat pocket mechanism in the unfolded state in the embodiment Figure 2 ;

[0052] Figure 4 Structural schematic diagram of the seat pocket mechanism in the folded state in the embodiment Figure 2 ;

[0053] Figure 5 Structural schematic diagram of the first pivot part in the embodiment Figure 1 ;

[0054] Figure 6 Structural schematic diagram of the first pivot part in the embodiment Figure 2 ;

[0055] Figure 7 Structural schematic diagram of the first pivot part in the embodiment Figure 3 ;

[0056] Figure 8 Structural schematic diagram of the first pivot part in the embodiment Figure 4 ;

[0057] Figure 9 Structural schematic diagram of the first arm and the first pivot ring in the embodiment;

[0058] Figure 10 Structural schematic diagram of the first locking component in the embodiment Figure 1 ;

[0059] Figure 11 Structural schematic diagram of the first locking component in the embodiment Figure 2 ;

[0060] Figure 12Schematic diagram of the structure of the second pivot part in the embodiment Figure 1 ;

[0061] Figure 13 Schematic diagram of the structure of the second pivot part in the embodiment Figure 2 ;

[0062] Figure 14 Schematic diagram of the structure of the second pivot part in the embodiment Figure 3 ;

[0063] Figure 15 Schematic diagram of the structure of the second pivot part in the embodiment Figure 4 ;

[0064] Figure 16 Schematic diagram of the structure of the second pivot part in the embodiment Figure 5 ;

[0065] Figure 17 Schematic diagram of the structure of the second locking component in the embodiment Figure 1 ;

[0066] Figure 18 Schematic diagram of the structure of the second locking component in the embodiment Figure 2 。

[0067] In the figure: 1. First pivot part; 11. First inner end cover; 111. Second support arm; 112. Positioning support plate; 113. First drive plate; 12. First pivot ring; 121. First support arm; 1211. First channel; 1212. Second channel; 1213. Limit strip hole; 122. First arc groove; 1221. First inner end face; 1222. Second inner end face; 123. Elastic positioning pin; 124. First locking half groove; 13. Second pivot ring; 131. Third support arm; 132. Second arc groove; 1321. Third inner end face; 1322. Fourth inner end face; 133. Axial extension part; 134. Positioning groove; 135. Second locking half groove; 136. First tooth groove; 137. Third arc groove; 14. First gear ring; 141. First drive inclined surface; 15. First outer end cover; 151. Seat pocket mounting sleeve; 152. First limit boss; 153. Second tooth groove; 16. First spring; 21. Upper surrounding frame; 22. Lower surrounding frame; 23. Protective surrounding frame; 24. First support rod; 3. Second pivot part; 31. Second inner end cover; 311. Fourth support arm; 312. Sleeve; 32. Third pivot ring; 321. Fifth support arm; 322. Third tooth groove; 323. Fourth arc groove; 324. Second drive plate; 325. First limit block; 33. Drive ring; 331. Second drive inclined surface; 332. Second limit block; 333. First cable head groove; 334. Wire groove; 34. Second gear ring; 35. Second outer end cover; 351. Sixth support arm; 352. Fourth tooth groove; 353. Second limit boss; 36. Third spring; 41. First connecting rod; 42. Second connecting rod; 43. Backrest surrounding frame; 44. Second support rod; 51. Locking rod; 52. Drive shaft; 53. Locking button; 54. Drive inclined groove; 55. Second spring; 61. Cable; 62. Cable head; 63. Locking switch; 64. Second cable head groove; 65. Fixed seat. Detailed implementation mode

[0068] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0069] This specific embodiment is only an explanation of the present utility model, and it is not a limitation of the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present utility model, it is protected by the Patent Law. Embodiment

[0070] A seat pocket mechanism, refer to Figures 1 to 18, the seat basket mechanism is installed on the frame of the stroller. After installing the fabric cover, it is used for children to sit on. In this embodiment, the seat basket mechanism includes two first pivot parts 1, an upper surrounding frame 21, a lower surrounding frame 22, a protective surrounding frame 23, a first support rod 24, two second pivot parts 3, two first connecting rods 41, two second connecting rods 42, a backrest surrounding frame 43, a second support rod 44, a first locking component and a second locking component; wherein, the two first pivot parts 1 are symmetrically and coaxially arranged; the upper surrounding frame 21, the lower surrounding frame 22 and the protective surrounding frame 23 are respectively connected to the two first pivot parts 1. In this embodiment, the upper surrounding frame 21, the lower surrounding frame 22 and the protective surrounding frame 23 can respectively rotate around the center line of the first pivot part 1; one end of the first connecting rod 41 is fixedly connected to the second pivot part 3, and the other end is hinged to the lower surrounding frame 22; one end of the second connecting rod 42 is fixedly connected to the second pivot part 3, and the other end is hinged to the upper surrounding frame 21; the backrest surrounding frame 43 is respectively connected to the two second pivot parts 3; the first support rod 24 is arranged on the lower surrounding frame 22, and the second support rod 44 is arranged between the two second pivot parts 3.

[0071] Refer to Figures 1 to 18 , the first support rod 24, the second support rod 44 and the backrest surrounding frame 43 cooperate to realize the sitting and backrest of children, and the protective surrounding frame 23 plays a protective role for children.

[0072] Refer to Figures 1 to 18 , in this embodiment, the first locking component acts on the first pivot part 1 to enable the first pivot part 1 to switch between the locked state and the active state; the second locking component acts on the second pivot part 3 to enable the second pivot part 3 to switch between the locked state and the active state; wherein, relying on the first pivot part 1 and the second pivot part 3, the seat basket mechanism in this embodiment can be folded and the backrest angle can be adjusted respectively; folding the seat basket mechanism can reduce the volume and facilitate storage; adjusting the backrest angle of the seat basket mechanism can conveniently provide a variety of different sitting postures and improve the sitting experience of children.

[0073] Refer to Figures 1 to 18 , the seat basket mechanism includes an unfolded state and a folded state; in the unfolded state, the angle between the upper surrounding frame 21 and the lower surrounding frame 22 is about 180°, and the angle between the upper surrounding frame 21 and the protective surrounding frame 23 is about 110°; the second pivot part 3 is located below the first pivot part 1, and the backrest surrounding frame 43 is located in the inner space area of the upper surrounding frame 21; in the folded state, the angle between the upper surrounding frame 21 and the lower surrounding frame 22 is about 0°, and the angle between the protective surrounding frame 23 and the upper surrounding frame 21 is about 0°.

[0074] Refer to Figures 1 to 18, when the seat pocket mechanism is in the deployed state, the first locking component makes the first pivot part 1 in the locked state; when folding, control the first locking component to make the first pivot part 1 switch to the active state, and then rotate the lower surrounding frame 22 towards the direction close to the upper surrounding frame 21, that is, rotate the lower surrounding frame 22 upwards; during the rotation of the lower surrounding frame 22, it drives the first connecting rod 41, the second pivot part 3, the second connecting rod 42, the backrest surrounding frame 43 and the protective surrounding frame 23 to rotate, so as to realize the folding of the seat pocket mechanism.

[0075] Refer to Figures 1 to 18 , Backrest angle adjustment: Control the second locking component to make the second pivot part 3 switch to the active state, and then rotate the backrest surrounding frame 43 to adjust the backrest angle; after the backrest angle adjustment is completed, control the second locking component to make the second pivot part 3 switch to the locked state.

[0076] Refer to Figures 1 to 18 , in this embodiment, the first pivot part 1 is used to realize the folding of the seat pocket mechanism, the second pivot part 3 is used to realize the backrest angle adjustment of the seat pocket mechanism, and the connecting rod structure is used to realize the folding of the backrest surrounding frame 43. This not only enables the seat pocket mechanism to have two functions of being foldable and the backrest angle adjustable at the same time, but also has a simple and ingenious structure and is convenient to operate.

[0077] Refer to Figures 1 to 11 , specifically, the first pivot part 1 in this embodiment includes a first inner end cover 11, a first pivot ring 12, a second pivot ring 13 and a first outer end cover 15 arranged in sequence along the axial direction, and further includes a first tooth ring 14 arranged between the second pivot ring 13 and the first outer end cover 15, and a first spring 16 arranged between the first tooth ring 14 and the first outer end cover 15; the first pivot part 1 further includes a first pivot shaft (not shown in the drawing) in the middle, and the first inner end cover 11, the first pivot ring 12, the second pivot ring 13 and the first outer end cover 15 can respectively rotate around the first pivot shaft.

[0078] Refer to Figures 1 to 11 , the outer side wall of the first inner end cover 11 is provided with a second support arm 111, and the protective surrounding frame 23 is detachably connected to the second support arm 111; the outer side wall of the first pivot ring 12 is provided with a first support arm 121, and the first support arm 121 is embedded in the lower surrounding frame 22 for realizing the connection between the lower surrounding frame 22 and the first pivot part 1; the outer side wall of the second pivot ring 13 is provided with a third support arm 131, and the third support arm 131 is embedded in the upper surrounding frame 21 for realizing the connection between the upper surrounding frame 21 and the first pivot part 1; the outer side wall of the first outer end cover 15 is provided with a seat pocket mounting sleeve 151, and the seat pocket mechanism is detachably mounted on the frame of the baby stroller through the seat pocket mounting sleeve 151, and the direction of the seat pocket mechanism can be adjusted.

[0079] Refer to Figures 1 to 11, in this embodiment, a first rotating shaft is disposed between the first connecting rod 41 and the lower surrounding frame 22. The first rotating shaft is embedded in the first support arm 121 to realize the hinged connection between the first connecting rod 41 and the lower surrounding frame 22. A hinge seat is provided on the outer side wall of the upper surrounding frame 21. A second rotating shaft is disposed between the second connecting rod 42 and the hinge seat to realize the hinged connection between the second connecting rod 42 and the upper surrounding frame 21. The hinged connection between the first connecting rod 41 and the lower surrounding frame 22 is realized by passing through the first rotating shaft, which can reduce interference and is beneficial to folding.

[0080] Refer to Figures 1 to 11 , in this embodiment, the lower surrounding frame 22 is rotated upward for folding. The lower surrounding frame 22 drives the first pivot ring 12 to rotate through the first support arm 121. Moreover, the first pivot ring 12 can drive the first inner end cover 11 to rotate, and the first inner end cover 11 drives the protective surrounding frame 23 to rotate. In this way, not only can the folding between the lower surrounding frame 22 and the upper surrounding frame 21 be realized, but also the protective surrounding frame 23 can be driven to fold. The folding and unfolding of the protective surrounding frame 23 are realized in a linkage manner, which can simplify the structure, is convenient to operate, and optimizes the user experience.

[0081] Refer to Figures 1 to 11 , specifically, a positioning support plate 112 is provided on the inner end face of the first inner end cover 11. A first arc groove 122 that cooperates with the positioning support plate 112 is provided on the inner side wall of the first pivot ring 12. A second arc groove 132 that cooperates with the positioning support plate 112 is provided on the end face of the second pivot ring 13. The first arc groove 122 includes a first inner end face 1221 and a second inner end face 1222 respectively located at both circumferential ends. The second arc groove 132 includes a third inner end face 1321 and a fourth inner end face 1322 respectively located at both circumferential ends. The first inner end face 1221 and the third inner end face 1321 are located on the same circumferential side. Among them, the arc lengths of the first arc groove 122 and the second arc groove 132 are both greater than the arc length of the positioning support plate 112.

[0082] Refer to Figures 1 to 11 , in the unfolded state, the second inner end face 1222 of the first arc groove 122 cooperates with the third inner end face 1321 of the second arc groove 132 to clamp the positioning support plate 112 therebetween, then the first inner end cover 11 cannot rotate, so that the protective surrounding frame 23 is kept in the unfolded state. When folding, the lower surrounding frame 22 drives the first pivot ring 12 to rotate through the first support arm 121. After the first inner end face 1221 of the first arc groove 122 rotates a certain distance, it contacts the positioning support plate 112 and drives the first inner end cover 11 to rotate until the first inner end face 1221 cooperates with the fourth inner end face 1322 to clamp the positioning support plate 112 therebetween, then the first inner end cover 11 cannot rotate, so that the protective surrounding frame 23 is kept in the folded state. When changing from the folded state to the unfolded state, the second inner end face 1222 drives the positioning support plate 112 to rotate.

[0083] Refer to Figures 1 to 11The positioning support plate 112, the first arc groove 122 and the second arc groove 132 are used to drive the first inner end cover 11 to rotate and limit the first inner end cover 11. The structure is simple and ingenious.

[0084] Reference Figures 1 to 11 In this embodiment, the end face of the second pivot ring 13 is provided with an axial extension portion 133 embedded in the first pivot ring 12, the inner side wall of the first pivot ring 12 is provided with an elastic locating pin 123, and the outer side wall of the axial extension portion 133 is provided with two locating grooves 134 respectively cooperating with the elastic locating pin 123; the two locating grooves 134 respectively correspond to the folding state and the unfolding state of the seat pocket mechanism; the elastic locating pin 123 cooperates with the two locating grooves 134 to play a positioning and prompting role, and can feedback whether the seat pocket mechanism is in the folding state or the unfolding state; the elastic locating pin 123 specifically includes a locating pin and a spring; the locating pin can move radially, and the elastic force of the spring makes the locating pin have a tendency to move radially inward.

[0085] Reference Figures 1 to 11 In this embodiment, the end faces of the second pivot ring 13 and the first outer end cover 15 are respectively provided with a first tooth groove 136 and a second tooth groove 153 that cooperate with the first gear ring 14; the first gear ring 14 can move axially relative to the second pivot ring 13, and includes a first position close to the second pivot ring 13 and a second position close to the first outer end cover 15; in the first position, the first gear ring 14 is respectively embedded in the first tooth groove 136 and the second tooth groove 153, so that the circumferential position between the second pivot ring 13 and the first outer end cover 15 is fixed; in the second position, the first gear ring 14 is disengaged from the first tooth groove 136 and embedded in the second tooth groove 153, so that the second pivot ring 13 and the first outer end cover 15 can rotate.

[0086] Reference Figures 1 to 11 The elastic force of the first spring 16 makes the first gear ring 14 tend to move from the second position to the first position; the first inner end cover 11 is provided with a first driving plate 113 in contact with the first gear ring 14, and the end face of the first gear ring 14 is provided with a first driving inclined surface 141 capable of contacting the first driving plate 113; the first driving inclined surface 141 extends in the circumferential direction and the axial direction respectively, so when the first inner end cover 11 rotates, the first gear ring 14 can be driven to move axially through the first driving inclined surface 141.

[0087] Reference Figures 1 to 11 In the unfolded state, the first gear ring 14 is located in the first position, so that the second pivot ring 13 and the upper frame 21 are fixed relative to the first outer end cover 15, playing a limiting role; in the folding process, the rotated first inner end cover 11 drives the first gear ring 14 to move from the first position to the second position; in the folded state, the first gear ring 14 is located in the second position; that is, in the folded state, the upper frame 21 can be rotated.

[0088] Referring to Figures 1 to 11 Figures 1 to 11 , when the seat basket mechanism is installed on the frame of the baby stroller, the seat basket mounting sleeve 151 on the first outer end cap 15 is connected to the frame; then, during the folding process of the seat basket mechanism, the first outer end cap 15 is in a fixed state; the frame includes a push handle frame. Folding the seat basket mechanism on the frame and approaching the push handle frame is beneficial to reducing the volume and facilitating storage; after the seat basket mechanism is reversed, the seat basket mechanism faces the pusher. At this time, when the seat basket mechanism is folded on the frame, a large angle is formed with the push handle frame. Then, rotating the upper surrounding frame 21 in the direction approaching the push handle frame is beneficial to reducing the volume and facilitating storage.

[0089] Referring to Figures 1 to 11 Figures 1 to 11 , preferably, two third arc grooves 137 opposite to each other at 180° are provided on the end face of the second pivot ring 13, and two first limit bosses 152 opposite to each other at 180° are provided on the end face of the first outer end cap 15; when the first gear ring 14 disengages from the first tooth groove 136, the two first limit bosses 152 are respectively embedded in the two third arc grooves 137 to play an axial limiting role on the second pivot ring 13; that is to say, after the seat basket mechanism is folded on the frame, the circumferential position of the upper surrounding frame 21 is restricted by the third arc grooves 137 and the first limit bosses 152, so that the seat basket mechanism approaches the push handle frame.

[0090] Referring to Figures 1 to 11 Figures 1 to 11 , specifically, in this embodiment, the first locking assembly includes a locking rod 51 movably embedded in the first support arm 121; a first locking half groove 124 and a second locking half groove 135 cooperating with the locking rod 51 are respectively provided on the first pivot ring 12 and the second pivot ring 13; when the locking rod 51 is embedded in the first locking half groove 124 and the second locking half groove 135, the first pivot ring 12 cannot rotate and the first pivot part 1 is in a locked state; when the locking rod 51 disengages from the first locking half groove 124 and the second locking half groove 135, the first pivot ring 12 can rotate and the first pivot part 1 is in an active state; the first locking assembly in this embodiment has the advantages of simple structure and convenient processing.

[0091] Referring to Figures 1 to 11, the first locking assembly further includes a locking button 53 movably disposed within the first arm 121, and a second spring 55 acting on the locking lever 51; a driving shaft 52 is provided on the side wall of the first arm 121, and a driving inclined groove 54 cooperating with the driving shaft 52 is provided on the locking button 53; a first channel 1211 cooperating with the locking lever 51 and a second channel 1212 cooperating with the locking button 53 are provided within the first arm 121; the locking lever 51 is capable of moving within the first channel 1211, the locking button 53 is capable of moving within the second channel 1212, and the first channel 1211 is arranged perpendicular to the second channel 1212; a limiting strip hole 1213 cooperating with the driving shaft 52 is provided on the side wall of the second channel 1212, and the limiting strip hole 1213 is in the same length extension direction as the first channel 1211; the second spring 55 is disposed within the first channel 1211, and the elastic force of the second spring 55 causes the locking lever 51 to have a tendency to be embedded into the first locking half groove 124 and the second locking half groove 135; that is to say, the elastic force of the second spring 55 can keep the first pivoting portion 1 in a locked state.

[0092] Referring to Figures 1 to 11 , the cooperation between the driving shaft 52 and the limiting strip hole 1213 guides the movement of the locking lever 51 to prevent the locking lever 51 from getting stuck within the first channel 1211; by pressing the locking button 53, the locking lever 51 is driven to move away from the first locking half groove 124 and the second locking half groove 135 through the driving inclined groove 54 and the driving shaft 52, and then the first pivoting portion 1 is in an active state.

[0093] Referring to Figures 1 to 11 , in this embodiment, the locking button 53 is adopted to achieve displacement conversion. The locking button 53 extends out of the lower surrounding frame 22, which is not only convenient for operation but also convenient for processing and reduces costs.

[0094] Referring to Figures 1 to 18 , in this embodiment, the second pivoting portion 3 includes a second inner end cover 31, a third pivoting ring 32, and a second outer end cover 35 arranged in sequence along the axial direction, and further includes a second gear ring 34 disposed between the third pivoting ring 32 and the second outer end cover 35, a third spring 36 disposed between the second gear ring 34 and the second outer end cover 35, and a driving ring 33 disposed between the third pivoting ring 32 and the second gear ring 34; the second pivoting portion 3 further includes a second pivot shaft (not shown in the drawings) in the middle, and the second inner end cover 31, the third pivoting ring 32, and the second outer end cover 35 can respectively rotate around the second pivot shaft.

[0095] Referring to Figures 1 to 18, a sleeve 312 is provided on the outer end face of the second inner end cover 31, and the end of the second support rod 44 is embedded in the sleeve 312; a fourth arm 311 is provided on the outer side wall of the second inner end cover 31, and the end of the first connecting rod 41 is embedded in the fourth arm 311, and the first connecting rod 41 and the fourth arm 311 are fixedly connected by bolts; a fifth arm 321 is provided on the outer side wall of the third pivot ring 32, and the end of the backrest frame 43 is embedded in the fifth arm 321; a sixth arm 351 is provided on the outer side wall of the second outer end cover 35, and the end of the second connecting rod 42 is embedded in the sixth arm 351, and the second connecting rod 42 and the sixth arm 351 are fixedly connected by bolts.

[0096] Referring to Figures 1 to 18 , a third tooth groove 322 and a fourth tooth groove 352 for cooperating with the second tooth ring 34 are respectively provided on the end face of the third pivot ring 32 and the inner end face of the second outer end cover 35; the second tooth ring 34 can axially move relative to the third pivot ring 32, and includes a third position close to the third pivot ring 32 and a fourth position close to the second outer end cover 35; in the third position, the second tooth ring 34 is respectively embedded in the third tooth groove 322 and the fourth tooth groove 352, and at this time the third pivot ring 32 cannot rotate, so the backrest angle of the backrest frame 43 is fixed; in the fourth position, the second tooth ring 34 disengages from the third tooth groove 322 and is embedded in the fourth tooth groove 352, and at this time the third pivot ring 32 can rotate, so that the backrest frame 43 can be rotated to adjust the backrest angle; by using the cooperation of the second tooth ring 34 and the third tooth groove 322, multiple different backrest angles can be provided, and the stability of the backrest frame 43 is good.

[0097] Referring to Figures 1 to 18 , a fourth arc groove 323 is provided on the end face of the third pivot ring 32, and a second limiting boss 353 embedded in the fourth arc groove 323 is provided on the end face of the second outer end cover 35; the arc length of the fourth arc groove 323 is greater than the arc length of the second limiting boss 353; the cooperation of the fourth arc groove 323 and the second limiting boss 353 plays a circumferential limiting role on the third pivot ring 32, restricting the adjustment range of the backrest angle of the backrest frame 43.

[0098] Referring to Figures 1 to 18, the elastic force of the third spring 36 causes the second gear ring 34 to have a tendency to move from the fourth position to the third position; that is, the elastic force of the third spring 36 helps to keep the third pivot ring 32 and the backrest frame 43 at a fixed angle; a second drive plate 324 is provided on the inner end face of the third pivot ring 32, and second drive inclined surfaces 331 are respectively provided on the second drive plate 324 and the drive ring 33; the two second drive inclined surfaces are in contact, so that the drive ring 33 moves axially when rotating, and the drive ring 33 can drive the second gear ring 34 to move from the third position to the fourth position; preferably, a first limit block 325 is provided on the inner end face of the third pivot ring 32, and a second limit block 332 is provided on the outer side wall of the drive ring 33; the first limit block 325 cooperates with the second limit block 332 to realize the circumferential limit of the drive ring 33.

[0099] Referring to Figures 1 to 18 , in this embodiment, the second locking assembly includes two cables 61, cable heads 62 respectively provided at both ends of the cable 61, a locking switch 63 connected to the cable head at one end of the cable 61, a fixed seat 65 hinged to the locking switch 63, and a torsion spring (not shown in the drawings) provided between the locking switch 63 and the fixed seat 65; a first cable head groove 333 cooperating with the cable head 62 and a cable groove 334 cooperating with the cable 61 are provided on the end face of the drive ring 33; the cable groove 334 is connected to the first cable head groove 333 and extends circumferentially; by using the cable groove 334, the cable 61 is limited to prevent the cable 61 from jamming.

[0100] Referring to Figures 1 to 18 , the fixed seat 65 is installed at the middle position at the top of the backrest frame 43, and a rotating shaft is provided between the locking switch 63 and the fixed seat 65, so that the locking switch 63 can rotate around the rotating shaft; two second cable head grooves 64 are provided on the locking switch 63, and the cable heads 62 of the two cables 61 are respectively embedded in the two second cable head grooves 64; the cable 61 penetrates into the backrest frame 43 and then extends into the third pivot ring 32 through the fifth arm 321.

[0101] Referring to Figures 1 to 18 , when the locking switch 63 is rotated upward to pull the cable 61, the cable 61 drives the drive ring 33 to rotate, and the drive ring 33 moves axially when rotating, so as to push the second gear ring 34 to move from the third position to the fourth position. At this time, the second pivot part 3 is in an active state; in the active state, the backrest frame 43 can be rotated to adjust the backrest angle; when the locking switch 63 is rotated downward to release the cable 61, the second gear ring 34 moves from the fourth position to the third position under the elastic force of the third spring 36. At this time, the second pivot part 3 is in a locked state.

Claims

1. A seat pocket mechanism, characterized in that, Comprising: Two symmetric and coaxially arranged first pivot parts; An upper surrounding frame and a lower surrounding frame respectively connected to the two first pivot parts; Two symmetric and coaxially arranged second pivot parts; Two first connecting rods, one end of each first connecting rod is connected to the second pivot part, and the other end is hinged to the lower surrounding frame; Two second connecting rods, one end of each second connecting rod is connected to the second pivot part, and the other end is hinged to the upper surrounding frame; A backrest surrounding frame respectively connected to the two second pivot parts; A first locking assembly that acts on the first pivot part to enable the first pivot part to switch between a locked state and an active state; And, A second locking assembly that acts on the second pivot part to enable the second pivot part to switch between a locked state and an active state; Wherein, the seat pocket mechanism can be folded and the backrest angle can be adjusted respectively; Folding: Control the first locking assembly to make the first pivot part switch to the active state, and then rotate the lower surrounding frame towards the upper surrounding frame. During the rotation of the lower surrounding frame, the first connecting rod, the second pivot part, the second connecting rod and the backrest surrounding frame are driven to rotate, realizing the folding of the seat pocket mechanism; Backrest angle adjustment: Control the second locking assembly to make the second pivot part switch to the active state, and then rotate the backrest surrounding frame to adjust the backrest angle.

2. The seat pocket mechanism according to claim 1, wherein: The first pivot part includes a first inner end cover, a first pivot ring, a second pivot ring and a first outer end cover arranged in sequence along the axis; the lower surrounding frame is respectively connected to the two first pivot rings, and the upper surrounding frame is respectively connected to the two second pivot rings; The seat pocket mechanism further includes a protective surrounding frame respectively connected to the two first inner end covers; Wherein, the lower surrounding frame drives the first pivot ring to rotate, the first pivot ring drives the first inner end cover to rotate, and the first inner end cover drives the protective surrounding frame to rotate, realizing the folding and unfolding of the protective surrounding frame.

3. The seat pocket mechanism according to claim 2, characterized in that: A positioning support plate is arranged on the inner end face of the first inner end cover, a first arc groove cooperating with the positioning support plate is arranged on the inner side wall of the first pivot ring, and a second arc groove cooperating with the positioning support plate is arranged on the end face of the second pivot ring; The first arc groove includes a first inner end face and a second inner end face, the second arc groove includes a third inner end face and a fourth inner end face, and the first inner end face and the third inner end face are located on the same circumferential side; Wherein, the first inner end face and the second inner end face of the first pivot ring can respectively contact the positioning support plate to drive the rotation of the first inner end cover; the first inner end face cooperates with the fourth inner end face, and the second inner end face cooperates with the third inner end face to respectively realize the limitation of the positioning support plate.

4. The seat pocket mechanism according to claim 2, characterized in that: An axially extending part embedded in the first pivot ring is arranged on the end face of the second pivot ring, an elastic positioning pin is arranged on the inner side wall of the first pivot ring, and two positioning grooves respectively cooperating with the elastic positioning pin are arranged on the outer side wall of the axially extending part; the two positioning grooves respectively correspond to the folded state and the unfolded state of the seat pocket mechanism.

5. The seat pocket mechanism according to claim 2, characterized in that: The first pivot part further includes a first gear ring disposed between the second pivot ring and the first outer end cover, and a first spring disposed between the first gear ring and the first outer end cover; a first tooth groove and a second tooth groove that cooperate with the first gear ring are respectively disposed on the end surface of the second pivot ring and the end surface of the first outer end cover; The first gear ring is axially movable and includes a first position close to the second pivot ring and a second position close to the first outer end cover; in the first position, the first gear ring is respectively embedded in the first tooth groove and the second tooth groove; in the second position, the first gear ring disengages from the first tooth groove and is embedded in the second tooth groove; The elastic force of the first spring causes the first gear ring to tend to move from the second position to the first position; In the unfolded state, the first gear ring is located in the first position; During the folding process, the first inner end cover can drive the first gear ring to move from the first position to the second position; in the folded state, the first gear ring is located in the second position.

6. The seat pocket mechanism according to claim 5, wherein: A first driving plate in contact with the first gear ring is disposed on the first inner end cover, and a first driving inclined surface is disposed on the first driving plate and / or the first gear ring, and the axial movement of the first gear ring is achieved through the first driving inclined surface.

7. The seat pocket mechanism according to claim 2, characterized in that: A first support arm embedded in the lower surrounding frame is disposed on the first pivot ring; the first locking assembly includes a locking rod movably embedded in the first support arm; a first locking half groove and a second locking half groove that cooperate with the locking rod are respectively disposed on the first pivot ring and the second pivot ring; When the locking rod is embedded in the first locking half groove and the second locking half groove, the first pivot part is in a locked state; when the locking rod disengages from the first locking half groove and the second locking half groove, the first pivot part is in an active state.

8. The seat pocket mechanism according to claim 7, wherein: The first locking assembly further includes a locking button movably disposed in the first support arm, and a second spring acting on the locking rod; a driving shaft is disposed on the side wall of the first support arm, and a driving inclined groove cooperating with the driving shaft is disposed on the locking button; The elastic force of the second spring causes the locking rod to tend to be embedded in the first locking half groove and the second locking half groove; Press the locking button, and drive the locking rod to move away from the first locking half groove and the second locking half groove through the driving inclined groove and the driving shaft.

9. The seat pocket mechanism according to claim 1, wherein: The second pivot part includes a second inner end cover, a third pivot ring, and a second outer end cover arranged in sequence along the axial direction, and further includes a second gear ring disposed between the third pivot ring and the second outer end cover; The first connecting rod is connected to the second inner end cover, the second connecting rod is connected to the second outer end cover, and the backrest surrounding frame is respectively connected to the two third pivot rings; A third tooth groove and a fourth tooth groove that cooperate with the second gear ring are respectively disposed on the end surface of the third pivot ring and the inner end surface of the second outer end cover; The second gear ring is axially movable and includes a third position close to the third pivot ring and a fourth position close to the second outer end cover; in the third position, the second gear ring is respectively embedded in the third tooth groove and the fourth tooth groove; in the fourth position, the second gear ring disengages from the third tooth groove and is embedded in the fourth tooth groove.

10. The seat pocket mechanism according to claim 9, characterized in that: The second pivot portion further includes a third spring disposed between the second gear ring and the second outer end cover, and a driving ring disposed between the third pivot ring and the second gear ring; the elastic force of the third spring causes the second gear ring to have a tendency to move from the fourth position to the third position; The third pivot ring and / or the driving ring are / is provided with a second driving inclined surface; Through the second driving inclined surface, the driving ring moves axially when rotating; The second locking assembly includes a cable and a locking switch connected to one end of the cable, and the other end of the cable extends into the third pivot ring and is connected to the driving ring; By applying a pulling force to the cable through the locking switch and driving the driving ring to rotate, the driving ring moves axially when rotating, so as to push the second gear ring to move from the third position to the fourth position. At this time, the second pivot portion is in an active state; By releasing the cable through the locking switch, the second gear ring moves from the fourth position to the third position under the elastic force of the third spring. At this time, the second pivot portion is in a locked state.

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