Seat assembly of stroller
By designing a slidable liftable secondary backrest and locking structure of children's cart seat assembly, the problem that the fixed height of the backrest in the prior art cannot meet the needs of a higher child, and the multifunctional applicability of the seat assembly and children's riding comfort are achieved.
Patent Information
- Application Number
- CN202421754732.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-07-23
AI Technical Summary
The fixed backrest height of the existing children's cart seat assembly cannot meet the comfortable riding needs of taller children.
A seat assembly is designed including a rotatably connected main backrest and a secondary backrest that can be slidably lifted relative to the main backrest. The position of the secondary backrest is locked through the locking structure to adapt to the needs of children of different heights.
The seating component can not only meet the use of smaller children, but also meet the use of taller children, ensure children's comfortable riding and reduce family living costs.
Smart Images
Figure CN223045813U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a seat assembly of a baby stroller.
Background Art
[0002] The seat assembly is an important component of a baby stroller. The seat assembly generally includes a seat board and a backrest. The backrest of the existing seat assembly generally has a fixed height. Such a seat assembly can be suitable for children with a relatively small height. However, for children with a relatively high height, due to the relatively short backrest, the children will feel uncomfortable when sitting.
[0003] Therefore, more and more users hope that the seat assembly of a baby stroller can meet the needs of both children with a relatively small height and children with a relatively high height.
Content of the Utility Model
[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a seat assembly of a baby stroller with a simple structure, which can meet the needs of both children with a relatively small height and children with a relatively high height.
[0005] The utility model is realized by the following technical solutions:
[0006] A seat assembly of a baby stroller, comprising a seat board 1 and a backrest 2 that can be rotated and unfolded or folded relative to the seat board 1. The backrest 2 includes a main backrest 21 that is rotatably connected to the seat board 1. A secondary backrest 22 that can slide up and down relative to it is connected to the main backrest 21. A locking structure 3 for locking the relative positions of the two is provided between the main backrest 21 and the secondary backrest 22. A canopy support frame 4 that can follow the up and down movement of the secondary backrest 22 is provided on the secondary backrest 22.
[0007] The main backrest 21 includes a main board 211. A guiding groove 212 extending up and down is provided in the middle of the front side of the main board 211. A guiding hole 213 extending up and down is provided at the bottom of the guiding groove 212. The secondary backrest 22 includes a secondary board 221. A guiding portion 222 that can be placed in the guiding groove 212 is provided in the middle of the secondary board 221. A fixing seat 223 is connected to the secondary board 221. A connecting column 224 that passes through the guiding hole 213 and connects it to the secondary board 221 is provided on the fixing seat 223. The fixing seat 223 and the secondary board 221 clamp the main board 211 and can slide up and down relative to the main board 211.
[0008] There are two guiding holes 213, and there are two connecting columns 224 that pass through the corresponding guiding holes 213.
[0009] Guiding pieces 214 extending up and down are provided on both sides of the main board 211. Guiding slits 225 that are slidably matched with the guiding pieces 214 are provided on both sides of the secondary board 221.
[0010] A sliding groove 215 extending up and down is provided in the middle of the rear side surface of the main board 211 , and the fixing seat 223 is arranged in the sliding groove 215 .
[0011] The locking structure 3 includes a plurality of locking grooves 31 arranged on the groove walls on both sides of the slide groove 215 along the up and down directions. The fixed seat 223 is provided with two groups of locking members 32 that can slide therein and engage or disengage with the corresponding locking grooves 31. Each group of the locking members 32 includes a body 321. The body 321 is provided with a tongue 322 that cooperates with the locking groove 31. The body 321 is also provided with an operating block 323 exposed to the fixed seat 223. A reset spring 324 for pushing the body 321 to reset is provided between the body 321 and the fixed seat 223; when the two operating blocks 323 move toward each other, the tongue 322 disengages from the locking groove 31, and when the two operating blocks 323 move away from each other, the tongue 322 engages with the locking groove 31.
[0012] The fixing seat 223 is provided with a transverse strip hole 226, the main body 321 is provided with a connecting strip 325 that passes through the strip hole 226 and can be squeezed and deformed, the end of the connecting strip 325 is provided with a hook 326 that can hook the edge of the strip hole 226 after passing through the strip hole 226 to prevent the main body 321 from detaching from the fixing seat 223, the main body 321 is provided with a transverse groove 327, the fixing seat 223 is provided with a protruding protruding column 227, the reset spring 324 is arranged in the transverse groove 327, one end of the reset spring 324 abuts against the groove wall of the transverse groove 327, and the other end abuts against the protruding column 227.
[0013] The main board 211 is provided with a plurality of holes 216 for passing the safety belts along the vertical direction.
[0014] The seat plate 1 is provided with a pull-out plate 5 which can be pulled out to extend the front and rear length of the seat plate 1. A positioning structure which can locate the relative positions of the pull-out plate 5 and the seat plate 1 is provided between the pull-out plate 5 and the seat plate 1. The positioning structure includes a rear positioning protrusion 61 and a front positioning groove 62 provided on the seat plate 1. The pull-out plate 5 is provided with a positioning protrusion 63 which can be squeezed and can abut against the rear positioning protrusion 61 and can engage with the front positioning groove 62.
[0015] The pull-out plate 5 is also provided with a clearance groove 51 which can make way for the push rod of the child stroller when the seat assembly is reversed forward and backward. The seat plate 1 is also provided with a closing plate 7 which can slide therein and close the clearance groove 51.
[0016] Compared with the prior art, the utility model has the following advantages:
[0017] 1. The secondary backrest of the present utility model can slide up and down relative to the main backrest and be locked by a locking structure after reaching the desired position. Therefore, for children with a relatively short stature, the secondary backrest can be adjusted lower, while for children with a relatively tall stature, the secondary backrest can be adjusted higher to provide sufficient support for the children's backs. Therefore, the seat assembly of the children's stroller of the present utility model can meet the needs of both children with a relatively short stature and children with a relatively tall stature, and the children's stroller can be continuously used for many years during the growth process of children, reducing the cost of family life. In addition, the canopy support frame is installed on the secondary backrest. When the secondary backrest slides up and down for adjustment, the canopy support frame also moves up and down, so that the canopy of the children's stroller can be in an appropriate position to shade and shield the children from the wind.
[0018] 2. A pull-out board is provided inside the seat board of the present utility model. After the pull-out board is pulled out, it can extend the length of the seat board in the front-rear direction. The legs of the child can be placed flat on the pull-out board. At this time, the child can sit in the children's stroller in a lying position, and when the child sits upright, the pull-out board can be retracted into the seat board. The position of the pull-out board can be adjusted according to the actual needs of the child to make the child sit comfortably.
[0019] 3. The structure of the present utility model is simple, has a wide range of applications, and is suitable for popularization and application.
BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 is one of the perspective views of the present utility model;
[0021] Figure 2 is another perspective view of the present utility model;
[0022] Figure 3 is the perspective view of the present utility model after the secondary backrest is adjusted higher;
[0023] Figure 4 is one of the exploded views of the present utility model;
[0024] Figure 5 is Figure 4 the enlarged view of part A in
[0025] Figure 6 is another exploded view of the present utility model;
[0026] Figure 7 is Figure 6 the enlarged view of part B in
[0027] Figure 8 is the partial cross-sectional view of the present utility model;
[0028] Figure 9 is one of the perspective views of the present utility model when the pull-out board is pulled out;
[0029] Figure 10 is the second perspective view when the drawer plate of the present utility model is pulled out;
[0030] Figure 11 is the exploded view of the components of the present utility model;
[0031] Figure 12 is Figure 11 the enlarged view at position C in
[0032] Figure 13 is the perspective view of the components of the present utility model;
[0033] Figure 14 is Figure 13 the enlarged view at position D in
Specific Embodiment
[0034] The present utility model will be further described below in conjunction with the accompanying drawings:
[0035] As Figures 1 to 9 shown, a seat assembly of a baby stroller includes a seat board 1 and a backrest 2 that can be rotated and unfolded or folded relative to the seat board 1. An armrest 8 that can be rotated and unfolded or folded relative to the seat board 1 is connected to the seat board 1. The backrest 2 includes a main backrest 21 that is rotatably connected to the seat board 1. A secondary backrest 22 that can slide and lift relative to the main backrest 21 is connected to the main backrest 21. A locking structure 3 for locking the relative positions of the two is provided between the main backrest 21 and the secondary backrest 22. A canopy support frame 4 that can move up and down following the secondary backrest 22 is provided on the secondary backrest 22. The secondary backrest 22 can slide up and down relative to the main backrest 21 and be locked by the locking structure 3 after reaching the required position. Therefore, for a child with a relatively small height, the secondary backrest 22 can be adjusted lower, while for a child with a relatively high height, the secondary backrest 22 can be adjusted higher to provide sufficient support for the child's back by the backrest 2. In addition, the canopy support frame 4 is installed on the secondary backrest 22. When the secondary backrest 22 slides up and down for adjustment, the canopy support frame 4 also moves up and down, so that the canopy of the baby stroller can be in an appropriate position to shade and windproof the child.
[0036] As Figure 4 and Figure 6As shown, the main backrest 21 includes a main board 211. In the middle of the front side of the main board 211, there is a guiding groove 212 extending vertically. At the bottom of the guiding groove 212, there is a guiding hole 213 extending vertically. The secondary backrest 22 includes a secondary board 221. In the middle of the secondary board 221, there is a guiding portion 222 that can be placed into the guiding groove 212. A fixing seat 223 is connected to the secondary board 221. On the fixing seat 223, there is a connecting column 224 that passes through the guiding hole 213 to connect it with the secondary board 221. The fixing seat 223 and the secondary board 221 clamp the main board 211 and can slide up and down relative to the main board 211. The fixing seat 223 and the secondary board 221 clamp the main board 211 and the connecting column 224 is inserted into the guiding hole 213, which can play a guiding role when the secondary backrest 22 moves up and down. Moreover, the cooperation between the guiding portion 222 on the secondary backrest 22 and the guiding groove 212 also plays a guiding role, making the up and down sliding of the secondary backrest 22 smooth.
[0037] As Figure 4 and Figure 6 shown, in this embodiment, there are two guiding holes 213, and there are two connecting columns 224 that pass through the corresponding guiding holes 213, so that the sliding up and down of the secondary backrest 22 is more stable and smooth.
[0038] As Figure 6 shown, in order to further make the sliding up and down of the secondary backrest 22 smooth, guiding pieces 214 extending vertically are provided on both sides of the main board 211, and guiding slits 225 that are slidably matched with the guiding pieces 214 are provided on both sides of the secondary board 221.
[0039] As Figure 6 shown, in the middle of the rear side of the main board 211, there is a sliding groove 215 extending vertically. The fixing seat 223 is arranged in the sliding groove 215, making the structure of the backrest 2 compact and not having a very thick thickness in the front and rear directions.
[0040] As Figure 5 、 Figure 7 and Figure 8As shown, the locking structure 3 includes a plurality of locking grooves 31 arranged on the two side walls of the sliding groove 215 in the up and down direction. Two sets of locking members 32 capable of sliding therein and engaging or disengaging with the corresponding locking grooves 31 are provided in the fixing seat 223. Each set of the locking members 32 includes a body 321. A locking tongue 322 cooperating with the locking groove 31 is provided on the body 321. An operating block 323 exposed outside the fixing seat 223 is further provided on the body 321. A return spring 324 for pushing the body 321 to reset is provided between the body 321 and the fixing seat 223. When the two operating blocks 323 move towards each other, the locking tongue 322 disengages from the locking groove 31. When the two operating blocks 323 move away from each other, the locking tongue 322 engages with the locking groove 31. An inclined surface 328 that can be pressed by the upper edge of the locking groove 31 is provided on the upper side of the locking tongue 322. Therefore, when it is necessary to adjust the auxiliary backrest 22 upwards, only need to lift the auxiliary backrest 22 upwards. The inclined surface 328 abuts against the upper edge of the locking groove 31, and the upper edge of the locking groove 31 presses the inclined surface 328, so that the two bodies 321 move towards each other, and the locking tongue 322 disengages from the corresponding locking groove 31. At this time, the locking structure 3 is unlocked. Therefore, when adjusting the auxiliary backrest 22 upwards, only need to directly lift the auxiliary backrest 22 upwards. When it is necessary to adjust the auxiliary backrest 22 downwards, then pinch the two operating blocks 323. The two bodies 321 move towards each other, and the locking tongue 322 disengages from the locking groove 31. At this time, the auxiliary backrest 22 can be adjusted downwards. When adjusted to the appropriate position, release the operating blocks 323, and the return spring 324 pushes the body 321 to reset, and the locking tongue 322 engages with another locking groove 31, thus completing the locking.
[0041] As Figure 5 and Figure 7 shown, a transverse strip-shaped hole 226 is provided on the fixing seat 223. A connecting strip 325 that passes through the strip-shaped hole 226 and can be squeezed and deformed is provided on the body 321. A hook 326 that can hook the edge of the strip-shaped hole 226 to prevent the body 321 from disengaging from the fixing seat 223 is provided at the end of the connecting strip 325. When connecting the body 321 and the fixing seat 223, only need to apply force to pass the hook 326 through the strip-shaped hole 226 and reversely hook the edge of the strip-shaped hole 226, and the assembly is convenient and fast. A transverse groove 327 is provided on the body 321. A protruding column 227 is provided in the fixing seat 223. The return spring 324 is arranged in the transverse groove 327. One end of the return spring 324 abuts against the groove wall of the transverse groove 327, and the other end abuts against the protruding column 227.
[0042] As Figure 6 and Figure 8As shown, a plurality of holes 216 for inserting the safety belt are provided on the main board 211 in the vertical direction. Therefore, different holes 216 can be selected to insert the safety belt according to the different heights of the children, thereby ensuring the safety and comfort of the children.
[0043] like Figures 9 to 14 As shown, the seat plate 1 is provided with a pull-out plate 5 that can be pulled out to extend the front-to-back length of the seat plate 1. After the pull-out plate 5 is pulled out, the length of the seat plate 1 in the front-to-back direction can be extended. The legs of the child can be placed flat on the pull-out plate 5. At this time, the child can ride the child stroller in a lying position. When the child sits, the pull-out plate 5 can be stored in the seat plate 1. The position of the pull-out plate 5 can be adjusted according to the actual needs of the child, so that the child can ride comfortably. A positioning structure that can locate the relative position of the pull-out plate 5 and the seat plate 1 is provided between the pull-out plate 5 and the seat plate 1. The positioning structure includes a rear positioning protrusion 61 and a front positioning groove 62 on the seat plate 1. The pull-out plate 5 is provided with a positioning protrusion 63 that can be squeezed and can abut against the rear positioning protrusion 61 and can engage with the front positioning groove 62. When the pull-out plate 5 is pulled out, the positioning protrusion 63 engages with the front positioning groove 62, and when the pull-out plate 5 is stored in the seat plate 1, the positioning protrusion 63 abuts against the rear positioning protrusion 6, thereby preventing the pull-out plate 5 from easily sliding out of the seat plate 1. When the position of the pull-out plate 5 needs to be adjusted, it is only necessary to push and pull the pull-out plate 5 with force, so that the positioning protrusion 63 is squeezed and deformed, thereby completing the disengagement from the front positioning groove 62 or the rear positioning protrusion 61, and the operation is also very convenient and quick.
[0044] like Figure 11 As shown, the pull-out plate 5 is also provided with a clearance groove 51 which can make way for the push rod of the child stroller when the seat assembly is reversed forward and backward. Therefore, for a seat assembly that can rotate and reverse forward and backward, when the seat assembly rotates on the child stroller and faces backward, the clearance groove 51 can make way for the push rod, so that the pull-out plate 5 can be pulled out when the seat assembly faces backward. A closing plate 7 is also provided in the seat plate 1, which can slide therein and close the clearance groove 51. Therefore, when the seat assembly faces forward, the closing plate 7 can be pulled out to close the clearance groove 51.
[0045] 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 seat assembly for a child stroller, characterized in that: The invention comprises a seat plate (1) and a backrest (2) which can be rotated to unfold or fold relative to the seat plate (1); the backrest (2) comprises a main backrest (21) which is rotatably connected to the seat plate (1); the main backrest (21) is connected to a secondary backrest (22) which can slide and rise and fall relative to the main backrest; a locking structure (3) for locking the relative positions of the main backrest (21) and the secondary backrest (22) is provided between the main backrest (21) and the secondary backrest (22); and the secondary backrest (22) is provided with a ceiling support frame (4) which can rise and fall with the secondary backrest (22).
2. The seat assembly of the stroller according to claim 1, characterized in that: The main backrest (21) comprises a main board (211), a guide groove (212) extending up and down is provided in the middle of the front side of the main board (211), and a guide hole (213) extending up and down is provided at the bottom of the guide groove (212); the auxiliary backrest (22) comprises an auxiliary board (221), a guide portion (222) capable of being placed in the guide groove (212) is provided in the middle of the auxiliary board (221), a fixing seat (223) is connected to the auxiliary board (221), and a connecting column (224) is provided on the fixing seat (223) for passing through the guide hole (213) and connecting the fixing seat (223) with the auxiliary board (221); the fixing seat (223) and the auxiliary board (221) clamp the main board (211) and can slide up and down relative to the main board (211).
3. The seat assembly of the stroller according to claim 2, characterized in that: There are two guide holes (213), and there are two connection posts (224) passing through the corresponding guide holes (213).
4. The seat assembly of the stroller according to claim 2, characterized in that: The main board (211) is provided with guide pieces (214) extending up and down on both sides, and the auxiliary board (221) is provided with guide slots (225) slidingly matched with the guide pieces (214) on both sides.
5. The seat assembly of the stroller according to claim 2, characterized in that: A sliding groove (215) extending up and down is provided in the middle of the rear side surface of the main board (211), and the fixing seat (223) is arranged in the sliding groove (215).
6. The seat assembly of the stroller according to claim 5, characterized in that: The locking structure (3) comprises a plurality of locking grooves (31) arranged on the groove walls on both sides of the slide groove (215) along the up-down direction; the fixing seat (223) is provided with two groups of locking members (32) which can slide therein and engage with or disengage from the corresponding locking grooves (31); each group of the locking members (32) comprises a body (321); the body (321) is provided with a latch tongue (322) which cooperates with the locking groove (31); the body (321) is also provided with an operating block (323) exposed from the fixing seat (223); a reset spring (324) for pushing the body (321) to reset is provided between the body (321) and the fixing seat (223); when the two operating blocks (323) move toward each other, the latch tongue (322) disengages from the locking groove (31); when the two operating blocks (323) move away from each other, the latch tongue (322) engages with the locking groove (31).
7. The seat assembly of the stroller according to claim 6, characterized in that: The fixing seat (223) is provided with a transverse strip hole (226), the main body (321) is provided with a connecting strip (325) that passes through the strip hole (226) and can be squeezed and deformed, the end of the connecting strip (325) is provided with a hook (326) that can hook the edge of the strip hole (226) after passing through the strip hole (226) to prevent the main body (321) from detaching from the fixing seat (223), the main body (321) is provided with a transverse groove (327), the fixing seat (223) is provided with a protruding protruding column (227), the reset spring (324) is arranged in the transverse groove (327), one end of the reset spring (324) is against the groove wall of the transverse groove (327), and the other end is against the protruding column (227).
8. The seat assembly of the stroller according to claim 6, characterized in that: The main board (211) is provided with a plurality of holes (216) for passing safety belts along the up-down direction.
9. The seat assembly of a child stroller according to claim 1, characterized in that: The seat plate (1) is provided with a pull-out plate (5) which can be pulled out to extend the front-to-rear length of the seat plate (1); a positioning structure which can locate the relative positions of the pull-out plate (5) and the seat plate (1) is provided between the pull-out plate (5) and the seat plate (1); the positioning structure comprises a rear positioning protrusion (61) and a front positioning groove (62) provided on the seat plate (1); the pull-out plate (5) is provided with a positioning protrusion (63) which can be squeezed and can abut against the rear positioning protrusion (61) and can engage with the front positioning groove (62).
10. The seat assembly of the stroller according to claim 9, characterized in that: The pull-out plate (5) is also provided with a clearance groove (51) which can make way for the push rod of the child stroller when the seat assembly is reversed forward and backward, and the seat plate (1) is also provided with a closing plate (7) which can slide therein and close the clearance groove (51).