A seat assembly

Abstract

The utility model discloses a seat component, the backrest part is equipped with the angle adjusting device of angle position that can make the backrest part stay at multiple, multiple angle position includes minimum angle position and maximum angle position, still be connected with the handrail subassembly on the seat part, be equipped with the lock structure between handrail subassembly and the seat part, the lock structure includes the location that sets up on the seat part, be equipped with the lock part that can be locked with the location or separate on handrail subassembly, the cooperation part is connected on the lock part, be equipped with the give room part that can give room for the cooperation part when it moves between maximum angle position and minimum angle position on the backrest part, still be equipped with the push part that can push the cooperation part and make the lock part separate with the location when it moves from minimum angle position to folding position on the backrest part, still be equipped with the drive part that can exert force to make handrail subassembly rotate and unfold when it moves from folding position to minimum angle position on the backrest part. The utility model discloses folding and unfolding operation is convenient.

Description

[Technical Field]

[0001] This utility model relates to a seat assembly. [Background Technology]

[0002] Strollers are a common product during a child's growth. A stroller generally consists of a frame and a seat assembly attached to the frame. Strollers can typically be unfolded or folded; when unfolded, they provide a comfortable ride for children, and when folded, they are easy to carry or store. Traditional stroller seat assemblies include the seat itself, backrest, and armrests. However, when unfolding or folding the seat, the armrests and backrest require separate unlocking and unfolding operations, and the armrests also need to be manually folded or unfolded independently. There is no coordinated operation, and the folding and unfolding mechanism of the seat assembly still has room for improvement.

[0003] Therefore, this utility model was created based on the above-mentioned shortcomings. [Utility Model Content]

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a seat assembly with a simple structure and convenient folding and unfolding operation.

[0005] This utility model is achieved through the following technical solution:

[0006] A seating assembly capable of moving from an unfolded state to a folded state includes a seat portion, a backrest connected to the seat portion that can be rotated and unfolded or folded relative to the seat portion, and an angle adjustment device between the backrest and the seat portion that allows the backrest to be positioned at multiple angle levels. The multiple angle levels include a minimum angle level (minimum angle between the backrest and the seat portion when the seat assembly is in the unfolded state) and a maximum angle level (maximum angle between the backrest and the seat portion). An armrest assembly also connected to the seat portion that can be rotated and unfolded or folded relative to the seat portion is provided with a locking mechanism between the armrest assembly and the seat portion that allows the armrest assembly to be locked in the unfolded position. The locking structure includes a locking slot on the seat, a locking part on the armrest assembly that can slide relative to it and engage or disengage with the locking slot, a mating part connected to the locking part, a clearance part on the backrest that can make way for the mating part when it moves between the maximum and minimum angle positions, a pushing part on the backrest that can push the mating part to disengage the locking part from the locking slot when it moves from the minimum angle position to the folded position, and a driving part that can apply force to the mating part to rotate and unfold the armrest assembly when it moves from the folded position to the minimum angle position.

[0007] The seat includes a seat plate, and a seat joint seat is provided at the rear end of the seat plate. The backrest and armrest assembly are rotatably connected to the seat joint seat, and a fixing seat is fixedly connected to the seat joint seat.

[0008] The aforementioned slot is a slot provided on the fixed base, the aforementioned locking part is a locking block provided in the handrail assembly, and the handrail assembly is also provided with a first spring that can push the locking block to slide and reset.

[0009] The mating part is a protruding shaft extending laterally on the locking block. The clearance part is a clearance groove on the backrest. When the backrest moves between the maximum angle position and the lowest angle position, the protruding shaft slides relative to the clearance groove. The pushing part is a pushing groove connected to the clearance groove. When the backrest moves from the minimum angle position to the folded position, the groove wall of the pushing groove pushes the protruding shaft to disengage the locking block from the groove. The driving part is a driving groove connected to the pushing groove. When the backrest moves from the folded position to the minimum angle position, the groove wall of the driving groove pushes the protruding shaft to rotate and unfold the armrest assembly.

[0010] The relief groove is arc-shaped and has a starting end and a ending end. The distance between the wall of the relief groove and the rotation axis of the backrest remains constant along the direction from the starting end to the ending end. The push groove is connected to the relief groove and has a starting end and a ending end. The starting end of the push groove is connected to the ending end of the relief groove. The distance between the wall of the push groove and the rotation axis of the backrest gradually increases along the direction from the starting end to the ending end. The drive groove is connected to the push groove, and when the backrest moves from the folded position to the minimum angle position, the drive groove wall drives the protruding shaft to move, causing the armrest assembly to rotate and unfold.

[0011] The fixed base has a protruding positioning block on its outer peripheral surface, and the armrest assembly has a positioning groove for the positioning block to be inserted. The positioning groove has a front positioning wall and a rear positioning wall. When the armrest assembly is in the unfolded position, the positioning block abuts against the rear positioning wall. When the armrest assembly is in the folded position, the positioning block abuts against the front positioning wall.

[0012] The angle adjustment device includes an adjustment seat fixed to the seat joint seat, the adjustment seat having at least three adjustment slots along the circumferential direction, the backrest having an adjustment pin that can slide therein and engage or disengage with the adjustment slots, the backrest having a switch, and a pull rope between the switch and the adjustment pin that can pull the adjustment pin away from the adjustment slots when the switch is turned on, and the backrest also having a second spring that can push the adjustment pin back to its original position.

[0013] The inner wall of the seat joint seat is provided with multiple mating grooves along the circumferential direction. The adjusting seat includes a body, and one side of the body is provided with a protruding connecting body that can be fitted into the seat joint seat. The connecting body is provided with a mating block that can engage with the mating groove. The adjusting groove is provided on the body. When the adjusting seat is connected to the seat joint seat, one side surface of the body abuts against the inner side surface of the seat joint seat. The outer side surface of the seat joint seat is provided with a cover. The cover is provided with a protrusion that can engage with the mating groove. The cover is fixedly connected to the connecting body by screws passing through the cover and the seat joint seat.

[0014] Compared with the prior art, this utility model has the following advantages: The backrest of the seat assembly of this utility model can adjust the angle between the backrest and the seat. When the seat assembly is unfolded, the backrest can be at either the maximum or minimum angle position. At the maximum angle position, the child sits in a near-reclined posture, while at the minimum angle position, the child sits more upright. Therefore, users can adjust the tilt angle of the backrest according to their needs to ensure the child's comfort. More importantly, when adjusting the tilt angle of the backrest from the maximum to the minimum angle position, the clearance portion on the backrest can accommodate the mating portion on the armrest assembly, thus preventing the application of force to the armrest assembly. This ensures that adjusting the backrest between the maximum and minimum angle positions does not trigger the armrest assembly to unlock, allowing the armrest assembly to be in a normal working position that provides a grip. When the seat assembly needs to be fully folded, the backrest rotates from its smallest angle position to the folded position. At this time, the pushing part on the backrest pushes the mating part on the armrest assembly, causing the locking part on the armrest assembly to disengage from the locking position on the seat. The armrest assembly then folds in tandem, eliminating the need for separate operation; simply rotating the backrest folds the armrest assembly. Furthermore, when the backrest unfolds, the driving part on the backrest applies force to the mating part, causing the armrest assembly to unfold as well, achieving synchronized unfolding. When the backrest is unfolded to its smallest angle position, the locking part engages again, locking the armrest assembly in the unfolded state. Therefore, this invention's seat assembly not only enables synchronized unfolding or folding of the armrest assembly and backrest, but also allows adjustment of the backrest's tilt angle while the armrest assembly is unfolded and locked, making the folding or unfolding of the seat assembly convenient and ensuring comfort for children. [Attached Image Description]

[0015] Figure 1 This is a perspective view of the unfolded state of this utility model;

[0016] Figure 2 This is a side view of the backrest of this utility model when it is in the smallest angle position;

[0017] Figure 3This is a side view of the backrest of this utility model when it is at its maximum angle position;

[0018] Figure 4 This is one of the exploded views of the components of this utility model;

[0019] Figure 5 This is a perspective view of a component of this utility model;

[0020] Figure 6 This is the second exploded view of a component of this utility model;

[0021] Figure 7 This is a cross-sectional view of the present invention when the backrest is at its maximum angle position;

[0022] Figure 8 yes Figure 7 Enlarged view of point A in the middle;

[0023] Figure 9 This is a cross-sectional view of the present invention when the backrest is at the minimum angle position;

[0024] Figure 10 yes Figure 9 Enlarged view at point B;

[0025] Figure 11 This is a cross-sectional view of the present invention in a folded state;

[0026] Figure 12 yes Figure 11 A magnified view at point C;

[0027] Figure 13 This is a partial cross-sectional view of the backrest of this utility model.

Detailed Implementation Methods

[0028] The present invention will be further described below with reference to the accompanying drawings:

[0029] like Figure 1 , Figure 7 , Figure 9 and Figure 11As shown, a seating assembly capable of moving from an unfolded state to a folded state includes a seat portion 1, to which a backrest 2 is connected, capable of rotating and unfolding or folding relative to it. The seat portion 1 includes a seat plate 11, with a seat joint seat 12 at its rear end. The backrest 2 is rotatably connected to the seat joint seat 12, and a fixing seat 13 is fixedly connected to the seat joint seat 12. An angle adjustment device 3 is provided between the backrest 2 and the seat portion 1, allowing the backrest 2 to remain at multiple angle positions. The angle adjustment device 3 serves both to adjust the angle between the backrest 2 and the seat portion 1 and to lock the backrest 2 in place. This seating assembly can be connected to a stroller frame, and can also be used as a seat for products such as a children's high chair.

[0030] like Figure 2 and Figure 3 As shown, the multiple angle positions include the minimum angle position where the angle between the backrest 2 and the seat 1 is the smallest when the seat assembly is in the unfolded state, and the maximum angle position where the angle between the backrest 2 and the seat 1 is the largest. To provide children with more position options, multiple positions can be provided between the maximum and minimum angle positions, allowing the backrest 2 to remain at multiple different tilt angles for the child's comfort. In this embodiment, as... Figure 4 and Figure 6 As shown, the angle adjustment device 3 includes an adjustment seat 31 fixed to the seat joint seat 12. The adjustment seat 31 has at least three adjustment slots 32 along its circumference. The backrest 2 contains an adjustment pin 33 that can slide within it and engage or disengage from the adjustment slots 32. The backrest 2 has a switch (not shown). A pull rope 34 connects the switch and the adjustment pin 33, which pulls the adjustment pin 33 away from the adjustment slots 32 when the switch is turned on. The backrest 2 also contains a second spring 35 that pushes the adjustment pin 33 back to its original position. When the tilt angle of the backrest 2 needs to be adjusted, simply operate the switch and pull the adjustment pin 33 away from the adjustment slots 32 via the pull rope 34. Once disengaged, the backrest 2 can be rotated. When the desired position is reached, release the switch, and the second spring 35 pushes the adjustment pin 33 back to its original position, engaging it with another adjustment slot 32. The operation is very convenient and quick. Furthermore, when the backrest 2 needs to be fully folded, simply operate the switch and pull the cord 34. Once the adjusting pin 33 disengages from the adjusting groove 32, the backrest 2 can be rotated to fold.

[0031] like Figure 4 and Figure 6As shown, the inner wall of the seat joint seat 12 is provided with multiple mating grooves 14 along the circumferential direction. The adjusting seat 31 includes a body 311. One side of the body 311 has a protruding connecting body 312 that can fit into the seat joint seat 12. The connecting body 312 has a mating block 313 that can engage with the mating groove 14. The adjusting groove 32 is provided on the body 311. When the adjusting seat 31 is connected to the seat joint seat 12, one side surface of the body 311 abuts against the inner side surface of the seat joint seat 12. The outer side surface of the seat joint seat 12 is provided with a cover 15. The cover 15 has a protrusion 16 that can engage with the mating groove 14. The cover 15 is fixedly connected to the connecting body 312 by screws passing through the cover 15 and the seat joint seat 12. Both the mating block 313 and the protrusion 16 can engage with the mating groove 14, which is to make it easier to position and assemble the seat assembly.

[0032] like Figures 1 to 3 As shown, the seat 1 is also connected to an armrest assembly 4 that can rotate and unfold or fold relative to it. Specifically, the armrest assembly 4 is rotatably connected to the seat joint seat 12. In this embodiment, the armrest assembly 4, the backrest 2, and the seat joint seat 12 are coaxially rotatably connected, resulting in a relatively compact structure.

[0033] like Figures 4 to 13As shown, a locking structure is provided between the armrest assembly 4 and the seat portion 1 to lock the armrest assembly 4 in the unfolded position. The locking structure includes a locking slot 51 on the seat portion 1, and a locking part 52 on the armrest assembly 4 that can slide relative to it and engage or disengage with the locking slot 51. When the locking part 52 engages with the locking slot 51, the unfolded state of the armrest assembly 4 is locked and maintained. When the locking part 52 disengages from the locking slot 51, the armrest assembly 4 is unlocked and can be rotated and folded. In this embodiment, the locking part 52 is connected to the mating part 61, and the backrest 2 is provided with a clearance part 62 that can make way for the mating part 61 when it moves between the maximum angle position and the minimum angle position. The backrest 2 is also provided with a push part 63 that can push the mating part 61 to disengage the locking part 52 from the locking position 51 when it moves from the minimum angle position to the folding position. The backrest 2 is also provided with a drive part 64 that can apply force to the mating part 61 to rotate and unfold the armrest assembly 4 when it moves from the folding position to the minimum angle position. When the backrest 2 is adjusted between the maximum and minimum angle positions, the clearance part 62 makes way for the mating part 61 on the locking part 52, ensuring that the rotational movement of the backrest 2 does not exert force on the armrest assembly 4. This ensures that the armrest assembly 4 remains in a grippable position when the backrest 2 is adjusted. When the backrest 2 needs to be fully folded, it rotates from back to front. When the backrest 2 passes the minimum angle position, the pushing part 63 on the backrest 2 contacts the mating part 61 and applies a pushing force to it, thereby pushing the locking part 52 out of the locking part 51. At this time, the armrest assembly 4 is unlocked and can be rotated and folded. Therefore, when the seat assembly is folded, the rotational movement of the backrest 2 drives the unlocking action of the armrest assembly 4, making the folding movement of the armrest assembly 4 linked, thus making the folding of the seat assembly more convenient and quick. Furthermore, when the seat assembly unfolds again, the drive unit 64 on the backrest 2 applies a force to the mating part 61, causing the mating part 61 to drive the armrest assembly 4 to rotate and unfold. Therefore, the rotational unfolding motion of the backrest 2 is linked to the unfolding of the armrest assembly 4, making the unfolding of the armrest assembly 4 convenient and quick.

[0034] like Figure 4 and Figure 6 As shown, the locking position 51 is a slot provided on the fixed base 13, and the locking part 52 is a locking block provided in the armrest assembly 4. The armrest assembly 4 is also provided with a first spring 53 that can push the locking block to slide and reset. During the process of the armrest assembly 4 unfolding by the drive part 64 applying force to the mating part 61, when the backrest 2 unfolds to the minimum angle position, the first spring 53 can push the locking block to reset, so that the locking part 62 and the locking position 51 are engaged again, ensuring that the armrest assembly 4 is unfolded and locked.

[0035] like Figure 4 as well as Figures 6 to 13 As shown, the mating part 61 is a protruding shaft extending laterally on the locking block, and the clearance part 62 is a clearance groove provided on the backrest 2. When the backrest 2 moves between the maximum angle position and the lowest angle position, the protruding shaft slides relative to the clearance groove. Therefore, when the backrest 2 moves between the maximum angle position and the lowest angle position, the backrest 2 will not exert force on the mating part 61, and will not exert unlocking force on the locking part 51, ensuring that the backrest 2 can freely adjust the angle between itself and the seat part 1 when the armrest assembly 4 is in the locked state. The push-up part 63 is a push-up groove that connects with the clearance groove. When the backrest 2 moves from the minimum angle position to the folded position, the groove wall of the push-up groove disengages the locking block from the slot through the push-up protruding shaft. At this time, the groove wall of the push-up groove applies a pushing force to the protruding shaft, which is transmitted to the locking block, causing the locking block to disengage from the slot. At this time, the armrest assembly 4 is unlocked and can rotate and fold. The drive part 64 is a drive groove that connects with the push-up groove. When the backrest 2 moves from the folded position to the minimum angle position, the groove wall of the drive groove pushes the protruding shaft, causing the armrest assembly 4 to rotate and unfold. At this time, the groove wall of the drive groove applies a pushing force to the protruding shaft, which is transmitted to the armrest assembly 4 through the locking block, driving the armrest assembly 4 to rotate and unfold.

[0036] like Figure 8 , Figure 10 , Figure 12 and Figure 13 As shown, the clearance groove is arc-shaped and has a starting end 62a and an ending end 62b. Along the direction from the starting end 62a to the ending end 62b, the distance between the groove wall and the rotation axis of the backrest 2 remains constant, ensuring that the backrest 2 does not trigger the locking structure of the armrest assembly 4 when adjusting its angle. The push groove connects to the clearance groove and has a starting end 63a and an ending end 63b. The starting end 63a connects to the ending end 62b. Along the direction from the starting end 63a to the ending end 63b, the distance between the push groove wall and the rotation axis of the backrest 2 gradually increases, ensuring that the backrest 2 does not trigger the locking structure of the armrest assembly 4 when adjusting its angle. When the armrest 2 rotates to the folding position, it can push the mating part 61 through the wall of the push groove, thereby causing the locking part 52 to slide and disengage from the locking position 51, so that the armrest assembly 4 can be unlocked and rotated to fold. The drive groove is connected to the push groove, and when the backrest 2 moves from the folding position to the minimum angle position, the drive groove wall drives the protruding shaft to move, so that the armrest assembly 4 rotates and unfolds. When the backrest 2 rotates and unfolds, the drive groove wall applies a force to the protruding shaft, and this force is transmitted to the armrest assembly 4, so that the armrest assembly 4 is driven to unfold. When the armrest assembly 4 unfolds and the locking part 52 is aligned with the locking position 51, the first spring 53 pushes the locking part 52 to engage with the locking position 51, and the armrest assembly 4 is locked.

[0037] like Figure 4 and Figure 5 As shown, the fixed base 13 has a protruding positioning block 71 on its outer peripheral surface, and the armrest assembly 4 has a positioning groove 72 for the positioning block 71 to be inserted. The positioning groove 72 has a front positioning wall 72a and a rear positioning wall 72b. When the armrest assembly 4 is in the unfolded position, the positioning block 71 abuts against the rear positioning wall 72b. When the armrest assembly 4 is in the folded position, the positioning block 71 abuts against the front positioning wall 72a. The cooperation between the positioning groove 72 and the positioning block 71 can limit the rotation angle of the armrest assembly 4 so that the armrest assembly 4 stops in a suitable position.

[0038] During the overall folding or unfolding process of the seat assembly of this utility model, the armrest assembly 4 can be moved in conjunction with the backrest 2, eliminating the need for separate operation of the armrest assembly 4. Furthermore, the backrest 2 can still be adjusted in tilt angle when the armrest assembly 4 is locked, making the folding or unfolding operation of the seat assembly simple and quick. It also provides more rest positions of the backrest 2 for users to choose from, so as to make children comfortable to ride.

[0039] The present invention has been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the invention.

Claims

1. A seat assembly capable of moving from an unfolded state to a folded state, characterized in that: The system includes a seat (1), on which a backrest (2) is connected, which can be rotated and unfolded or folded relative to the seat (1). An angle adjustment device (3) is provided between the backrest (2) and the seat (1) to adjust the angle between them, allowing the backrest (2) to remain at multiple angle positions. These multiple angle positions include the minimum angle position where the angle between the backrest (2) and the seat (1) is the smallest when the seat assembly is unfolded, and the maximum angle position where the angle between the backrest (2) and the seat (1) is the largest. The seat (1) is also connected to an armrest assembly (4) that can be rotated and unfolded or folded relative to it. A locking structure is provided between the armrest assembly (4) and the seat (1) to lock the armrest assembly (4) in the unfolded position. The locking structure includes components located on the seat (1)... 1) The armrest assembly (4) is provided with a locking part (52) that can slide relative to it and engage or disengage with the locking part (51). The locking part (52) is connected to a mating part (61). The backrest (2) is provided with a yielding part (62) that can make way for the mating part (61) when it moves between the maximum angle position and the minimum angle position. The backrest (2) is also provided with a pushing part (63) that can push the mating part (61) and disengage the locking part (52) from the locking part (51) when it moves from the minimum angle position to the folding position. The backrest (2) is also provided with a driving part (64) that can apply force to the mating part (61) and cause the armrest assembly (4) to rotate and unfold when it moves from the folding position to the minimum angle position.

2. The seating assembly according to claim 1, characterized in that: The seat part (1) includes a seat plate (11), and a seat joint seat (12) is provided at the rear end of the seat plate (11). The backrest (2) and armrest assembly (4) are rotatably connected to the seat joint seat (12), and a fixing seat (13) is fixedly connected to the seat joint seat (12).

3. The seating assembly according to claim 2, characterized in that: The slot (51) is a slot provided on the fixed base (13), the locking part (52) is a locking block provided in the handrail assembly (4), and the handrail assembly (4) is also provided with a first spring (53) that can push the locking block to slide and reset.

4. The seating assembly according to claim 3, characterized in that: The mating part (61) is a protruding shaft extending laterally on the locking block. The clearance part (62) is a clearance groove on the backrest (2). When the backrest (2) moves between the maximum angle position and the lowest angle position, the protruding shaft slides relative to the clearance groove. The pushing part (63) is a pushing groove connected to the clearance groove. When the backrest (2) moves from the minimum angle position to the folding position, the groove wall of the pushing groove pushes the protruding shaft to disengage the locking block from the groove. The driving part (64) is a driving groove connected to the pushing groove. When the backrest (2) moves from the folding position to the minimum angle position, the groove wall of the driving groove pushes the protruding shaft to rotate and unfold the armrest assembly (4).

5. The seating assembly according to claim 4, characterized in that: The relief groove is arc-shaped and has a relief groove start end (62a) and a relief groove end end (62b). Along the direction from the relief groove start end (62a) to the relief groove end end (62b), the distance between the relief groove wall and the rotation axis of the backrest (2) remains unchanged. The push groove is connected to the relief groove and has a push groove start end (63a) and a push groove end end (63b). The push groove start end (63a) is connected to the relief groove end end (62b). Along the direction from the push groove start end (63a) to the push groove end end (63b), the distance between the push groove wall and the rotation axis of the backrest (2) gradually increases. The drive groove is connected to the push groove, and when the backrest (2) moves from the folded position to the minimum included angle position, the drive groove wall drives the protruding shaft to move, causing the armrest assembly (4) to rotate and unfold.

6. The seating assembly according to claim 4, characterized in that: The fixed base (13) has a protruding positioning block (71) on its outer peripheral surface. The armrest assembly (4) has a positioning groove (72) for the positioning block (71) to be inserted. The positioning groove (72) has a front positioning wall (72a) and a rear positioning wall (72b). When the armrest assembly (4) is in the unfolded position, the positioning block (71) abuts against the rear positioning wall (72b). When the armrest assembly (4) is in the folded position, the positioning block (71) abuts against the front positioning wall (72a).

7. The seating assembly according to any one of claims 3 to 6, characterized in that: The angle adjustment device (3) includes an adjustment seat (31) fixed on the seat joint seat (12). The adjustment seat (31) is provided with at least three adjustment slots (32) along the circumferential direction. The backrest (2) is provided with an adjustment pin (33) that can slide inside and engage or disengage from the adjustment slots (32). The backrest (2) is provided with a switch. A pull rope (34) is provided between the switch and the adjustment pin (33) that can pull the adjustment pin (33) away from the adjustment slots (32) when the switch is turned on. The backrest (2) is also provided with a second spring (35) that can push the adjustment pin (33) to reset.

8. The seating assembly according to claim 7, characterized in that: The inner wall of the seat joint seat (12) is provided with a plurality of mating grooves (14) along the circumferential direction. The adjusting seat (31) includes a body (311). One side of the body (311) is provided with a protruding connecting body (312) that can be fitted into the seat joint seat (12). The connecting body (312) is provided with a mating block (313) that can engage with the mating groove (14). The adjusting groove (32) is provided on the body (311). When the adjusting seat (31) is connected to the seat joint seat (12), one side surface of the body (311) abuts against the inner side of the seat joint seat (12). The outer side of the seat joint seat (12) is provided with a cover (15). The cover (15) is provided with a protrusion (16) that can engage with the mating groove (14). The cover (15) is fixedly connected to the connecting body (312) by screws passing through the cover (15) and the seat joint seat (12).

Images