CN212290004U - Baby carriage seat assembly - Google Patents

Abstract

The utility model discloses a perambulator seat subassembly, including can dismantle the connecting portion of being connected with the connecting seat on the frame, be connected with its pivoted seat portion and back portion relatively on the connecting portion, be equipped with first latch device between seat portion and the connecting portion, be equipped with second latch device between back portion and the connecting portion, the seat portion includes the bedplate, be equipped with the annular seat on the bedplate, still be equipped with the locating part that can fix a position the seat portion when seat portion relative connecting portion rotate the settlement position between seat portion and the connecting portion, the locating part is including establishing the constant head tank on the annular seat, be equipped with in the connecting portion and radially slide in it and with constant head tank complex locating pin, still be equipped with the second reset spring that can promote the locating pin and reset in the connecting portion, still be equipped with on the annular seat and supply the locating pin to insert and make the release groove of second reset spring release when first latch device kayser. The utility model discloses simple structure, long service life.

Description

Baby carriage seat assembly

[ technical field ] A method for producing a semiconductor device

The utility model relates to a perambulator seat subassembly.

[ background of the invention ]

The seat assembly of the baby carriage is a part of the baby carriage, and the existing seat assembly of the baby carriage is generally detachably connected with a baby carriage frame, so that the seat assembly can be reversely mounted. In folding a stroller, the seat assembly is typically folded prior to folding the frame, which is divided into two folding operations to effect folding of the stroller. The seat subassembly generally can adopt the cooperation structure of locating pin and constant head tank to fix a position the bedplate that has rotated when folding to the locating pin rear side sets up the spring, so that locating pin and constant head tank keep the block. When the seat assembly is in the expanded state, the spring is always in the compressed state, which is likely to cause the failure of the spring and affect the service life of the seat assembly.

Therefore, the present invention is based on the above disadvantages.

[ Utility model ] content

The utility model aims at overcoming the defects of the prior art and providing a baby carriage seat component with simple structure and long service life.

The utility model discloses a realize through following technical scheme:

a stroller seat assembly 7 characterized by: the bicycle seat comprises a connecting part 71 which can be detachably connected with a connecting seat 8 on a bicycle frame 100, a seat part 72 and a backrest part 73 which can rotate relative to the connecting part 71 are connected on the connecting part 71, a first locking device 74 is arranged between the seat part 72 and the connecting part 71, a second locking device 75 is arranged between the backrest part 73 and the connecting part 71, the seat part 72 comprises a seat plate 721, an annular seat 722 is arranged on the seat plate 721, a positioning component which can position the seat part 72 when the seat part 72 rotates to a set position relative to the connecting part 71 is also arranged between the seat part 72 and the connecting part 71 and comprises a positioning groove 771 arranged on the annular seat 722, a positioning pin 772 which can slide in the connecting part 71 in the radial direction and is matched with the positioning groove 771 is also arranged in the connecting part 71, a second return spring 773 which can push the positioning pin to return is also arranged in the connecting part 71, the annular seat 722 is further provided with a release groove 723 for inserting the positioning pin 772 to release the second return spring 773 when the first locking device 74 is locked.

The stroller seat assembly 7 as described above, characterized in that: the first locking device 74 includes a locking block 741 capable of sliding in the seat plate 721, the connecting portion 71 is provided with a locking groove 742 capable of being engaged with the locking block 741, the seat plate 721 is provided with a pulling block 743 capable of sliding relative to the seat plate 721, a first pulling rope 744 is provided between the pulling block 743 and the locking block 741, and the seat plate 721 is further provided with a first return spring 745 capable of returning to the locking block 741.

The stroller seat assembly 7 as described above, characterized in that: the annular seat 722 is connected with a front armrest 76 which can rotate relative to the annular seat, the lower end of the front armrest 76 is provided with an engaging groove 746 which can be engaged with the locking block 741, when the locking block 741 is engaged with the engaging groove 746, the locking block 741 is engaged with the locking groove 742, and when the locking block 741 is disengaged from the engaging groove 746, the locking block 741 is disengaged from the locking groove 742.

The stroller seat assembly 7 as described above, characterized in that: at least two positioning grooves 771 are provided, the lower end of the front armrest 76 is annular, and at least two positioning notches 761 capable of being engaged with the positioning pin 772 are provided on the inner wall.

The stroller seat assembly 7 as described above, characterized in that: the lower end of the front arm rest 76 and the annular seat 722 are located between the connecting portion 71 and the backrest portion 73, the second latch means 75 includes a first tooth groove 751 provided on the connecting portion 71 and a second tooth groove 752 provided on the lower end of the backrest portion 73, a gear 753 which can move transversely in the space enclosed by the connecting part 71 and the backrest part 73 and can be simultaneously engaged with the first tooth groove 751 and the second tooth groove 752 is arranged in the space, a rotatable rotating block 754 is arranged between the backrest part 73 and the gear 753, a plurality of inclined grooves 755 are arranged on the rotating block 754 along the circumferential direction, the backrest portion 73 is provided with a slant protrusion 756 which is engaged with the slant groove 755 when the rotary block 754 rotates to push the rotary block 754 to move laterally, a pull rope 757 is connected to the rotating block 754, a handle 758 capable of pulling the pull rope 757 is connected to the backrest 73, and a third return spring 759 is further arranged between the connecting portion 71 and the gear 753.

The stroller seat assembly 7 as described above, characterized in that: the second spline 752 is a spline groove which enables the backrest 73 to rotate freely forward after the first locking device 74 is unlocked, the lower end of the backrest 73 is provided with an arc-shaped notch groove 731 along the circumferential direction, and when the first locking device 74 is locked, one end of the arc-shaped notch groove 731 abuts against the locking block 741 to prevent the backrest 73 from rotating forward.

The stroller seat assembly 7 as described above, characterized in that: the lower end of the backrest part 73 is provided with a projecting shaft 732 penetrating through a gear 753, the projecting shaft 732 is provided with a convex rib 733, and the gear 753 and a rotating block 754 are provided with arc-shaped abdicating grooves 750 capable of being matched with the convex rib 733.

The stroller seat assembly 7 as described above, characterized in that: the connecting portion 71 is connected with an operating plate 781 capable of sliding up and down relative to the connecting portion 71 and a locking pin 782 which can be driven by the operating plate 781 to be disengaged from a locking hole 82 on a connecting seat 8 on the frame 100 when the operating plate 781 slides upwards, a fourth return spring 783 capable of returning the locking pin 782 is further arranged in the connecting portion 71, a moving plate 784 capable of being driven by the operating plate 781 to move in the front-rear direction of the stroller frame when the operating plate 781 slides upwards is further arranged on the connecting portion 71, a clamping protrusion 785 capable of being clamped with a positioning groove 786 on the connecting seat 8 is arranged on the moving plate 784, a fifth return spring 787 capable of pushing the moving plate 784 to return is further arranged in the connecting portion 71, and a seventh return spring 78b capable of pushing the operating plate 781 to slide downwards to return is further arranged in the connecting portion 71.

The stroller seat assembly 7 as described above, characterized in that: the locking pin 782 is provided with a first inclined surface 788, and the operating plate 781 is provided with a second inclined surface 789 which cooperates with the first inclined surface 788 to push the locking pin 782 to move when the operating plate 781 moves upward.

The stroller seat assembly 7 as described above, characterized in that: the movable plate 784 is provided with an inclined hole 780, and the operating plate 781 is provided with a driving shaft 78a inserted into the inclined hole 780 and capable of pushing the movable plate 784 to move when the operating plate 781 moves upward.

Compared with the prior art, the utility model discloses there is following advantage:

1. the utility model discloses when baby's saddle position subassembly is in the expansion state, first kayser device is in the kayser state, and the locating pin is located the release groove on the annular seat, consequently can be so that second reset spring is in natural state, can avoid the second reset spring to receive the compression for a long time and become invalid when seat subassembly expansion state, ensures product quality, prolongs the life of seat subassembly.

2. The utility model discloses a relative connecting portion of bedplate rotate the back and can stop two positions, and one of them position is the half state of opening of seat subassembly, and when the seat rotated and reachd this position, back portion can rotate forward and draw close to the bedplate to make the seat subassembly fold completely, such folding mode is applicable to the seat subassembly and installs on the frame in reverse. When the seat assembly is reversely installed on the frame, the backrest part is far away from the hand push rod of the frame, if the backrest part and the hand push rod are not close to each other firstly when the seat assembly is folded, the situation that the backrest part rotates suddenly at a large angle can occur when the frame is folded, and impact can be generated on the wrist of a user. And because the seat board can stay in the half-unfolded position, the seat component further folds and then rotates forwards from the backrest part, and the backrest part rotates forwards and then approaches to the hand push rod, therefore, the frame can be very stable and smooth when folded, and impact can not be generated.

3. The utility model discloses simple structure can avoid the second reset spring inefficacy, extension seat subassembly life is fit for popularizing and applying.

[ description of the drawings ]

FIG. 1 is a perspective view of a seat assembly of the present invention;

fig. 2 is an exploded view of the seat assembly of the present invention;

FIG. 3 is a cross-sectional view of the seat assembly of the present invention;

fig. 4 is one of the exploded views of the seat assembly of the present invention;

fig. 5 is a second exploded view of the seat assembly of the present invention;

fig. 6 is a third exploded view of the seat assembly of the present invention;

figure 7 is a fourth exploded view of the seat assembly of the present invention;

fig. 8 is a perspective view of a seat part of the present invention;

fig. 9 is a partial cross-sectional view of a seat portion of the present invention;

figure 10 is a side view of the seat assembly of the present invention in a deployed state;

FIG. 11 is a side view of the seat assembly of the present invention in an expanded state with the attachment portion removed;

FIG. 12 is a side view of the seat assembly of the present invention in an expanded state with the attachment portion and front armrest removed;

figure 13 is a side view of the seat assembly of the present invention in a semi-deployed state;

figure 14 is a side view of the seat assembly of the present invention with the attachment portion removed and in a semi-deployed state;

FIG. 15 is a side view of the seat assembly of the present invention in a semi-deployed position with the attachment portion and front armrest removed;

figure 16 is a side view of the seat assembly of the present invention in a folded condition;

figure 17 is a side view of the seat assembly of the present invention with the attachment portion removed and in a folded condition;

figure 18 is a side view of the seat assembly of the present invention in a folded condition with the attachment portion and front arm rests removed;

figure 19 is a side view of the seat assembly of the present invention when mounted in a forward orientation on a stroller frame;

FIG. 20 is a side view of the present invention with the seat assembly mounted in reverse on the stroller frame;

FIG. 21 is a perspective view of the stroller frame;

fig. 22 is an enlarged view at a in fig. 21.

[ detailed description ] embodiments

The invention will be further described with reference to the accompanying drawings:

as shown in fig. 1, 2, 6, 9 and 21, the seat assembly 7 includes a connecting portion 71 detachably connected to the connecting base 8 of the frame 100, the connecting portion 71 is connected to a seat portion 72 and a backrest portion 73 capable of rotating relative thereto, a first latch device 74 is disposed between the seat portion 72 and the connecting portion 71, and a second latch device 75 is disposed between the backrest portion 73 and the connecting portion 71. The connecting part 71 is detachably connected with the connecting seat 8, so that the seat assembly 7 can be reversed, and a user can adjust the sitting direction of an infant according to the requirement. Furthermore, the seat part 72 and the backrest part 73 can rotate relative to the connecting part 71, so that the seat assembly 7 can be folded, and the volume of the folded baby carriage frame is small.

As shown in fig. 6, the seat portion 72 includes a seat plate 721, the seat plate 721 is provided with an annular seat 722, a positioning member capable of positioning the seat portion 72 when the seat portion 72 rotates to a set position relative to the connecting portion 71 is further provided between the seat portion 72 and the connecting portion 71, the positioning member includes a positioning groove 771 provided on the annular seat 722, the connecting portion 71 is provided with a positioning pin 772 capable of sliding radially therein to be matched with the positioning groove 771, the connecting portion 71 is further provided with a second return spring 773 capable of pushing the positioning pin 772 to return, and the annular seat 722 is further provided with a release groove 723 through which the positioning pin 772 can be inserted to release the second return spring 773 when the first locking device 74 is locked. When the seat assembly 7 is in the unfolded state, the first latch device 74 is in the latched state, and the positioning pin 772 is located in the releasing slot 723 on the annular seat 822, so that the second return spring 773 can be in the natural state, the failure of the second return spring 773 due to long-time compression in the unfolded state of the seat assembly 7 can be avoided, the product quality is ensured, and the service life of the seat assembly is prolonged.

As shown in fig. 6, 8 and 9, the first locking device 74 includes a locking block 741 capable of sliding in the seat plate 721, the connecting portion 71 is provided with a locking groove 742 capable of being engaged with the locking block 741, the seat plate 721 is provided with a pulling block 743 capable of sliding relative to the seat plate, a first pulling rope 744 is provided between the pulling block 743 and the locking block 741, and the seat plate 721 is further provided with a first return spring 745 capable of returning the locking block 741. When the seat assembly 7 needs to be folded, the pulling block 743 is pulled below the seat plate 721, the locking block 741 is pulled by the first pulling rope 744, so that the locking block 741 is separated from the locking slot 742 on the connecting portion 71, and at this time, the seat plate 721 can be rotated relative to the connecting portion 71.

As shown in fig. 6 and 7, the annular seat 722 is connected with the front handle 76 capable of rotating relative thereto, the lower end of the front handle 76 is provided with an engaging slot 746 capable of engaging with the locking block 741, when the locking block 741 engages with the engaging slot 746, the locking block 741 engages with the locking slot 742, and when the locking block 741 disengages from the engaging slot 746, the locking block 741 disengages from the locking slot 742, so that the front handle 76 can be rotated and folded relative to the connecting portion 71 when the seat portion 72 is rotated and folded relative to the connecting portion 71.

As shown in fig. 6 and 7, there are at least two positioning grooves 771, the lower end of the front armrest 76 is annular, and the inner wall of the front armrest is provided with at least two positioning notches 761 capable of engaging with the positioning pin 772. Thus, seat plate 721 can rest and be positioned in at least two positions when seat assembly 7 is folded. As shown in fig. 10 to 12, when the seat assembly 7 is in the unfolded state, the latch 741 engages with the latch slot 742 and the latch slot 746, the positioning pin 772 is located in the positioning notch 761 of the front armrest 76 and the release slot 723 of the ring seat 722, and the positioning pin 772 is located in the release slot 723, so that the second return spring 773 can be in a natural state, and the second return spring 773 can be prevented from being compressed for a long time to fail in the unfolded state of the seat assembly 7, thereby ensuring the product quality. When the seat assembly 7 needs to be folded, as shown in fig. 13 to 15, the pulling block 743 is pulled to disengage the locking block 741 from the locking groove 742 and the engaging groove 746, so that the seat plate 721 can be rotated, during the rotation, the groove wall of the releasing groove 723 pushes the positioning pin 772 to extrude the positioning pin 772 from the releasing groove 723, when the seat plate 721 rotates to a set angle, the positioning pin 772 enters one of the positioning grooves 771, the seat assembly 7 is in a half-unfolded state, and during the process, the front armrest 76 does not rotate relative to the connecting portion 71. The seat unit 7 is set in a half-unfolded state because the frame of the stroller can be smoothly folded when the seat unit 7 is reversely mounted on the stroller, and thus a user feels comfortable. When the seat assembly 7 is reversely mounted on the stroller, the seat assembly 7 is folded by rotating the seat plate 721 upward to make the seat assembly 7 in a half-unfolded state and then rotating the backrest 73 forward, i.e. when the seat assembly 7 is folded, the seat plate 721 and the backrest 73 are respectively rotated in opposite directions by a certain angle to reach a folded position, so that the seat assembly 7 can be smoothly close to the folded frame when the frame 100 is folded after the seat assembly 7 is folded, thereby preventing the impact generated by the sudden approach of the seat assembly 7, if the backrest 73 is not rotated toward the seat plate 721 when the seat assembly 7 is folded, the impact to the wrist of the user due to the sudden large-angle rotation of the seat assembly 7 when the frame 100 is folded because the backrest 73 is far away from the push rod 4 of the frame 100 (as shown in fig. 20) can be generated, thereby making the user uncomfortable, providing the annular seat 722 with at least two detents 771 provides a semi-deployed position for the seat assembly 7 which solves this problem and allows the user to comfortably operate the foldable stroller when the seat assembly 7 is installed in the inverted orientation. When the seat assembly 7 is forwardly mounted on the stroller (as shown in fig. 19), since the backrest portion 73 itself is close to the handle bar 4 of the frame 100, even if the seat plate 721 is rotated to the fully folded position of the seat assembly 7 at one time when the seat assembly 7 is folded, no impact is generated when the folding handle bar 4 is subsequently rotated. As shown in fig. 16 to 18, during one rotation of the seat plate 721 to the fully folded position of the seat assembly 7, the detent 772 snaps into the other detent 771, and the seat plate 721 pushes the front arm rest 76 during the rotation, so that the detent 772 moves from one detent 761 to the other detent 761 of the front arm rest 76, thereby achieving the full folding of the seat assembly 7. Therefore, when the locking piece 741 is disengaged from the engaging groove 746 and the locking groove 742, the seat plate 721 and the front handle bar 76 can be rotated to fold the seat assembly 7, and the engagement of the positioning pin 772 with the positioning groove 771 and the positioning notch 761 maintains the folded state of the seat assembly 7, so that the user can have free hands to rotate and press the handle bar 4 of the stroller frame 100 to fold the stroller smoothly.

As shown in fig. 6 and 7, the lower end of the front armrest 76 and the annular seat 722 are located between the connecting portion 71 and the backrest portion 73, the second latch device 75 includes a first tooth groove 751 provided on the connecting portion 71 and a second tooth groove 752 provided on the lower end of the backrest portion 73, a gear 753 capable of moving transversely in a space enclosed by the connecting portion 71 and the backrest portion 73 and engaging with the first tooth groove 751 and the second tooth groove 752 at the same time is provided in the space, a rotatable rotating block 754 is provided between the backrest portion 73 and the gear 753, a plurality of inclined slots 755 are provided on the rotating block 754 along a circumferential direction, an inclined protrusion 756 capable of cooperating with the inclined slots 755 to push the rotating block 754 to move transversely is provided on the backrest portion 73, a cable 757 is connected to the rotating block 754, a handle 758 capable of pulling the cable 757 is connected to the backrest portion 73, a third return spring 759 is also arranged between the connecting part 71 and the gear 753. The rotating handle 758 can pull the rotating block 754 to rotate through a pulling rope 757, during the rotation process, the inclined protrusion 756 is matched with the inclined groove 755 on the rotating block 754 to push the rotating block 754 to move transversely, the rotating block 754 pushes the gear 753 to move transversely, the gear 753 is separated from the second tooth socket 752 on the backrest 73, at this time, the backrest 73 can be rotated, and a user can rotate the backrest 73 backwards or forwards, so that the backrest 73 and the seat 72 have a proper included angle, and the sitting comfort of the infant is ensured.

The second gear 752 is a ratchet gear that enables the backrest 73 to rotate freely forward after the first latch 74 is unlocked, so that the handle 758 does not need to be operated when the backrest 73 rotates forward to reduce the angle between the backrest 73 and the seat 72, thereby making the operation more convenient and faster. However, the lower end of the backrest part 73 is provided with an arc-shaped notch groove 731 in a circumferential direction, and when the first locking device 74 is locked, one end of the arc-shaped notch groove 731 abuts against the locking piece 741 to prevent the backrest part 73 from rotating forward. Therefore, when the locking piece 741 is engaged with the locking slot 742, the slot wall of the arc-shaped notch 731 abuts against the locking piece 741, which is the minimum angle between the backrest 73 and the seat 72, and the backrest 73 cannot be rotated forward, but only the backrest 73 can be rotated backward. When the seat plate 721 is rotated to the half-unfolded state of the seat assembly 7, the arc-shaped notch groove 731 no longer abuts against the locking piece 741, and the backrest 73 can be operated to rotate forward for folding, so that the stroller can be folded smoothly when the seat assembly 7 is installed reversely.

As shown in fig. 7 and 11, a protruding shaft 732 passing through a gear 753 is arranged at the lower end of the backrest part 73, a convex rib 733 is arranged on the protruding shaft 732, and an arc-shaped receding groove 750 capable of being matched with the convex rib 733 is arranged on the gear 753 and the rotating block 754. When the backrest part 73 is rotated forwards for a certain angle to enable the gear 753 to completely slide out of the protruding shaft 732, the end part of the convex rib 733 can abut against the end surface of the gear 753, so that the gear 753 and the second gear groove 752 on the backrest part 73 are kept in a disengaged state, at the moment, the backrest part 73 can be freely rotated forwards and the backrest part 73 can be freely rotated backwards, and an operating handle 758 is not needed when the backrest part 73 is rotated backwards, so that the operation is more convenient and faster.

As shown in fig. 4, 5, 21 and 22, the connection portion 71 is connected to an operation panel 781 capable of sliding up and down relative to the connection portion and a locking pin 782 capable of being driven by the operation panel 781 to move in the left and right directions of the stroller frame when the operation panel 781 slides up, the locking pin 782 is capable of engaging with or disengaging from the locking hole 82 of the connection seat 8 of the stroller frame 100 when moving, a fourth return spring 783 capable of returning the locking pin 782 is further provided in the connection portion 71, the connection portion 71 is further provided with a moving plate 784 capable of being driven by the operation panel 781 to move in the front and rear directions of the stroller frame when the operation panel 781 slides up, the moving plate 784 is provided with an engaging protrusion 785, the engaging protrusion 785 is capable of engaging with or disengaging from a plurality of positioning grooves 786 opened at the upper end of the connection seat 8, the connection portion 71 is further provided with a fifth return spring 787 capable of pushing the moving plate 784 to return, a seventh return spring 78b capable of pushing the operating plate 781 to slide downwards for return is further arranged in the connecting portion 71. When the seat assembly 7 is removed from the connecting holder 8, the operating plate 781 is simply pulled upward to disengage the locking pins 782 from the locking holes 82 of the connecting holder 8, and the seat assembly 7 is unlocked from the connecting holder 8, and the seat assembly 7 can be lifted upward and removed. And in the process that the operating plate 781 moves upwards, the operating plate 781 also drives the moving plate 784 to move, in the moving process, the clamping protrusions 785 move into the other positioning grooves 786 from one positioning groove 786, the position of the operating plate 781 can be positioned, even if the operating plate 781 is released, the operating plate 781 cannot return downwards due to the clamping of the clamping protrusions 785 and the positioning grooves 786, at the moment, the operating plate 781 can be released, and the front side and the rear side of the seat assembly 7 are held by hands to take out the seat assembly 7, so that the operation is more convenient when the seat assembly 7 is taken out.

As shown in fig. 4, the locking pin 782 is provided with a first inclined surface 788, and the operating plate 781 is provided with a second inclined surface 789 which cooperates with the first inclined surface 788 to push the locking pin 782 to move when the operating plate 781 moves upward.

As shown in fig. 4, the moving plate 784 is provided with an inclined hole 780, and the operating plate 781 is provided with a driving shaft 78a inserted into the inclined hole 780 to push the moving plate 784 to move when the operating plate 781 moves upward.

As shown in fig. 1 to 3, a sunshade frame 10 capable of sliding up and down is connected to the backrest portion 73. The sunshade canopy 10 can slide up and down along the backrest portion 73, and therefore, when the seat unit 7 is in the unfolded state, the canopy 10 can be raised high, thereby making it possible to better shade the sun, and also to provide a wide space for the infant and prevent the infant from feeling oppressed. When the stroller frame is folded, the sunshade frame 10 can be lowered to prevent the sunshade frame 10 from deforming due to touching the ground after the stroller frame is folded.

As shown in fig. 2 and fig. 3, the backrest portion 73 is provided with a slide rail 734 having a T-shaped cross section, the sunshade canopy frame 10 includes a slide seat 101 and a canopy rod 102 connected to the slide seat 101, and the slide seat 101 is provided with a slide groove 103 capable of being engaged with the slide rail 734. The T-shaped slide rail 734 is engaged with the slide groove 103, so that the sunshade frame 10 can slide smoothly up and down.

As shown in fig. 3, the slide rail 734 is provided with a plurality of clamping grooves 735, the sliding seat 101 is provided with a clamping pin 104 capable of sliding therein and clamping with the clamping grooves 735, and the sliding seat 101 is further provided with a sixth return spring 105 capable of pushing the clamping pin 104 to return. When the sunshade canopy frame 10 moves to a proper position, the sunshade canopy frame 10 can be positioned by clamping the clamping pin 104 and the clamping groove 735, the structure is simple, and when the position of the sunshade canopy frame 10 needs to be adjusted, the clamping pin 104 is pulled to enable the clamping groove 104 to withdraw from the clamping groove 735.

As shown in fig. 3, the groove wall of the clamping groove 735 between the first clamping groove 735 and the last clamping groove 735 is an inclined surface along the backrest 73 from top to bottom, so that the sliding seat can slide freely when being pulled or pushed. Therefore, when the position of the sunshade shed frame 10 needs to be adjusted, only a certain upward pulling force or downward pushing force needs to be applied, and the clamping pin 104 does not need to be pulled, so that the height adjustment of the sunshade shed frame 10 is very convenient and fast.

The groove wall on the first clamping groove 735 and close to the upper end side of the backrest 73 is a plane perpendicular to the slide rail 734 from top to bottom along the backrest 73, so that when the sunshade shed frame 10 reaches the clamping groove 735 at the uppermost end, even if an upward pulling force is applied, the sunshade shed frame 10 is not pulled out from the slide rail 734, and thus, the sunshade shed frame 10 is prevented from being pulled upwards due to overexertion when a user adjusts the height of the sunshade shed frame 10, and convenience is brought to the use. If the sunshade frame 10 needs to be disassembled, the latch pin 104 is pulled to withdraw the latch pin 104 from the uppermost latch groove 735, and then the sunshade frame 10 is lifted upwards.

Claims (10)

1. A stroller seat assembly (7), characterized by: the bicycle seat comprises a connecting part (71) which can be detachably connected with a connecting seat (8) on a bicycle frame (100), the connecting part (71) is connected with a seat part (72) and a backrest part (73) which can rotate relative to the connecting part, a first locking device (74) is arranged between the seat part (72) and the connecting part (71), a second locking device (75) is arranged between the backrest part (73) and the connecting part (71), the seat part (72) comprises a seat plate (721), an annular seat (722) is arranged on the seat plate (721), a positioning part which can position the seat part (72) when the seat part (72) rotates to a set position relative to the connecting part (71) is further arranged between the seat part (72) and the connecting part (71), the positioning part comprises a positioning groove (771) arranged on the annular seat (722), and a positioning pin (772) which can slide in the connecting part in the radial direction and is matched with the positioning groove (771) is arranged in the connecting part (71), the connecting portion (71) is further internally provided with a second return spring (773) capable of pushing the positioning pin (772) to reset, and the annular seat (722) is further provided with a release groove (723) which can be used for inserting the positioning pin (772) to release the second return spring (773) when the first locking device (74) is locked.

2. The stroller seat assembly (7) according to claim 1, characterized in that: first kayser device (74) including can be in bedplate (721) gliding kayser piece (741), connecting portion (71) on be equipped with card locked groove (742) that can block with kayser piece (741), bedplate (721) on be equipped with pulling piece (743) that can slide relative to it, pulling piece (743) and kayser piece (741) between be equipped with first stay cord (744), bedplate (721) in still be equipped with first reset spring (745) that can reset kayser piece (741).

3. The stroller seat assembly (7) according to claim 2, characterized in that: the annular seat (722) is connected with a front armrest (76) which can rotate relative to the annular seat, the lower end of the front armrest (76) is provided with a clamping groove (746) which can be clamped with a clamping block (741), when the clamping block (741) is clamped with the clamping groove (746), the clamping block (741) is clamped with the clamping groove (742), and when the clamping block (741) is separated from the clamping groove (746), the clamping block (741) is separated from the clamping groove (742).

4. A stroller seat assembly (7) according to claim 3, characterized in that: at least two positioning grooves (771) are arranged, the lower end of the front handrail (76) is annular, and at least two positioning notches (761) capable of being clamped with the positioning pin (772) are arranged on the inner wall.

5. A stroller seat assembly (7) according to claim 3, characterized in that: the lower end of the front handrail (76) and the annular seat (722) are positioned between the connecting part (71) and the backrest part (73), the second clamping and locking device (75) comprises a first toothed groove (751) arranged on the connecting part (71) and a second toothed groove (752) arranged at the lower end of the backrest part (73), a gear (753) which can transversely move in the space surrounded by the connecting part (71) and the backrest part (73) and can be simultaneously clamped with the first toothed groove (751) and the second toothed groove (752) is arranged in the space, a rotatable rotating block (754) is arranged between the backrest part (73) and the gear (753), a plurality of inclined grooves (755) are arranged on the rotating block (754) along the circumferential direction, an inclined protrusion (756) which can be matched with the inclined grooves (755) to push the rotating block (754) to transversely move is arranged on the backrest part (73), and the rotating block (754) is connected with 757), the backrest part (73) is connected with a handle (758) capable of pulling a pull rope (757), and a third return spring (759) is further arranged between the connecting part (71) and the gear (753).

6. The stroller seat assembly (7) according to claim 5, characterized in that: the second tooth groove (752) is a tooth groove which enables the backrest part (73) to rotate forwards freely after the first locking device (74) is unlocked, an arc-shaped notch groove (731) is formed in the lower end of the backrest part (73) along the circumferential direction, and when the first locking device (74) is locked, one end of the arc-shaped notch groove (731) abuts against the locking block (741) to prevent the backrest part (73) from rotating forwards.

7. The stroller seat assembly (7) according to claim 5, characterized in that: the lower end of the backrest part (73) is provided with a protruding shaft (732) penetrating through a gear (753), the protruding shaft (732) is provided with a convex rib (733), and the gear (753) and the rotating block (754) are provided with arc-shaped abdicating grooves (750) capable of being matched with the convex rib (733).

8. The stroller seat assembly (7) according to claim 1, characterized in that: connecting portion (71) on be connected with operation panel (781) that can slide about it relatively and can be driven by operation panel (781) and with lockpin (782) that locking hole (82) on connecting seat (8) on frame (100) break away from when operation panel (781) upwards slides, connecting portion (71) in still be equipped with fourth reset spring (783) that enable lockpin (782) to reset, connecting portion (71) on still be equipped with can be driven by operation panel (781) and along baby's fore-and-aft direction removal movable plate (784) when operation panel (781) upwards slides, movable plate (784) on be equipped with can with block protruding (785) of location ditch (786) block on connecting seat (8), connecting portion (71) in still be equipped with fifth reset spring (787) that can promote movable plate (784) reset spring (78) that can promote operation panel (781) to slide downwards and reset, connecting portion (71) in still be equipped with and to promote operation panel (781) in b) In that respect

9. The stroller seat assembly (7) according to claim 8, characterized in that: a first inclined surface (788) is arranged on the locking pin (782), and a second inclined surface (789) which can be matched with the first inclined surface (788) to push the locking pin (782) to move when the operating plate (781) moves upwards is arranged on the operating plate (781).

10. The stroller seat assembly (7) according to claim 8, characterized in that: the movable plate (784) is provided with an inclined hole (780), and the operating plate (781) is provided with a driving shaft (78a) which is inserted into the inclined hole (780) and can push the movable plate (784) to move when the operating plate (781) moves upwards.

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