CN214648517U - Foldable seat frame for baby carriage - Google Patents

Abstract

The utility model discloses a foldable seat frame for a baby carriage, which comprises a seat main body which can be connected on the frame of the baby carriage, a lower supporting linkage mechanism which is connected on the seat main body and can be unfolded or folded relative to the seat main body, and a handle bar connected on the lower supporting linkage mechanism; a transmission mechanism which can drive the lower support linkage mechanism to unfold or fold when the handle rod rotates relative to the support rod to unfold or fold is arranged between the handle rod and the grab rail; therefore, the utility model has the characteristics of it is convenient to expand and fold, and the security is high, and the practicality is strong, reasonable in design, simple structure.

Description

Foldable seat frame for baby carriage

[ technical field ] A method for producing a semiconductor device

The utility model relates to a bassinet especially relates to a bassinet is with seat frame that can fold up.

[ background of the invention ]

The children's carriage has become an indispensable product in the growth process of infants. Many of the children's vehicles on the current market include a foldable frame and a seat frame connected to the frame. When the folding child stroller is folded, the seat frame is firstly folded, and then the frame of the child stroller is folded, so that the integral folding of the child stroller is realized. However, the seat frame of the current children's carriage has the following defects: the seat frame is complex in structure, inconvenient to fold and operate, large in occupied space after being folded and not compact enough, so that the folded baby carriage is not convenient to carry and store, and the seat frame needs to be unlocked twice or many times when being folded, and the problems of complex operation and complex structure also exist.

Therefore, the present invention has been made in view of the above problems.

[ Utility model ] content

The utility model aims at overcoming prior art's is not enough, provides a bassinet is with seat frame that can fold up, can improve the problem that prior art exists, has to expand and fold convenient, and the security is high, and the practicality is strong, reasonable in design, simple structure's characteristics.

The utility model discloses a realize through following technical scheme:

the utility model relates to a folding seat frame for bassinet, can change from the expansion state to fold condition after locking device 100 unblocks, including the seat main part 1 that can connect on the bassinet frame, the lower part that can expand or fold up relative to seat main part 1 that connects on the seat main part 1 supports the link gear, be connected with handle bar 3 on the lower part supports the link gear; the lower support linkage mechanism includes:

the lower side of the supporting rod 2 is rotatably connected with the front side of the seat main body 1, and the upper end of the supporting rod 2 is rotatably connected with the lower end of the handle rod 3 around a fifth axis A5;

the grab rail 4 is connected with the supporting rod 2 in a rotating way around a first axis A1;

a support link 5, the lower side of the support link 5 is rotatably connected with the rear side of the seat body 1, and the upper end of the support link 5 is rotatably connected with the rear end of the grab bar 4 around a second axis A2;

and a transmission mechanism which can drive the lower support linkage mechanism to unfold or fold when the handle rod 3 rotates relative to the support rod 2 to unfold or fold is arranged between the handle rod 3 and the grab rail 4.

The foldable seat frame for the baby carrier comprises the transmission rod 6, the lower end of the transmission rod 6 is rotatably connected with the grab bar 4 around the third axis A3, and the upper end of the transmission rod 6 is rotatably connected with the handle rod 3 and close to the lower end of the handle rod 3 around the fourth axis A4.

According to the foldable seat frame for the baby carrier, the U-shaped handrail front rod 41 is arranged between the front ends of the two handrail rods 4, one end of the handrail front rod 41 is connected with the front end of one handrail rod 4, and the other end of the handrail front rod 41 is connected with the front end of the other handrail rod 4.

In the foldable seat frame for a stroller as described above, the front end of the seat body 1 is rotatably connected to a front rod 7 for supporting the legs of a child.

In the foldable seat frame for a baby carriage as described above, a backrest assembly 8 for supporting the back of a child is rotatably connected to the rear end of the seat body 1.

The foldable seat frame for the baby carriage comprises two backrest connecting rods 81 which are rotatably connected with the rear end of a seat main body 1, a U-shaped backrest rod 82 is arranged between the two backrest connecting rods 81, one end of the backrest rod 82 is rotatably connected with one backrest connecting rod 81, and the other end of the backrest rod 82 is rotatably connected with the other backrest connecting rod 81; a locking structure 83 which can lock the backrest rod 82 and the backrest connecting rod 81 when the backrest rod 82 rotates and unfolds relative to the backrest connecting rod 81 is arranged between the backrest rod 82 and the backrest connecting rod 81.

In the foldable seat frame for a stroller, the latch structure 83 includes a locking notch 831 provided at the lower end of the backrest rod 82, the backrest link 81 is provided with a locking protrusion 832 capable of being engaged with the locking notch 831 when the backrest rod 82 is unfolded and rotated relative to the backrest link 81, and a spring is provided between the locking protrusion 832 and the backrest link 81 to keep the locking protrusion 832 engaged with the locking notch 831 when the backrest rod 82 is unfolded and rotated relative to the backrest link 81.

In the foldable seat frame for a stroller, the locking device 100 is disposed between the support rod 2 and the handle rod 3, and the handle rod 3 is provided with the unlocking structure 200 capable of unlocking the locking device 100.

The foldable seat frame for children's carriage as described above, the locking device 100 includes a left housing 110 provided at the lower end of the handle bar 3 and a right housing 120 provided at the upper end of the support bar 2 and capable of rotating with respect to the left housing 110, the left shell 110 and the right shell 120 enclose a cavity, a rotating block 130 capable of rotating in the cavity and a spline 140 capable of moving transversely in the cavity are arranged in the cavity, a plurality of inclined protrusions 131 with inclined planes are circumferentially arrayed on the rotating block 130, a plurality of inclined grooves 141 which can be matched with the inclined protrusions 131 and can drive the spline 140 to transversely move when the rotating block 130 rotates are arranged on the spline 140, the left casing 110 and the right casing 120 are provided with a slot 150 capable of being engaged with the spline 140, a spring 160 for restoring the spline 140 is provided between the spline 140 and the right housing 120, and a pull rope 170 for pulling the rotation block 130 to rotate is provided in the handle bar 3.

In the foldable seat frame for a stroller, a locking structure 300 is disposed between the left housing 110 and the right housing 120, and the handle bar 3 and the support bar 2 can be locked together after being rotated relative to each other.

Compared with the prior art, the utility model has the advantages of as follows:

1. the utility model discloses when folding, earlier with the locking device unblock, operation handlebar pole uses fifth axis forward to overturn downwards, and the while handlebar pole orders about the connecting axle that the bracing piece used seat main part front side and bracing piece downside to rotate downwards as the axis of rotation, and the bracing piece is drawn close toward seat main part one side promptly, and the handlebar pole is drawn close toward bracing piece one side and is drawn close toward seat main part one side. Meanwhile, the handle rod is matched with the transmission mechanism to drive the front part of the armrest rod to rotate downwards by taking the first axis as a rotating shaft, namely, the front part of the armrest rod is drawn close to the lower end of the supporting rod, meanwhile, the rear end of the armrest rod is matched with the supporting connecting rod to rotate downwards by taking the connecting shaft at the lower side of the supporting connecting rod and the connecting shaft at the rear side of the seat as a rotating shaft, namely, the armrest rod and the supporting connecting rod are drawn close to one side of the seat support, so that the seat frame is integrally folded. When the handle rod is unfolded, the handle rod is operated to upwards and backwards overturn by taking the fifth axis as a rotating shaft until the handle rod is in an unfolded state relative to the supporting rod. Meanwhile, the handle bar drives the supporting rod to rotate upwards by taking the connecting shaft at the front side of the seat body and the lower side of the supporting rod as a rotating shaft, namely, the supporting rod turns over towards one side far away from the seat body until the supporting rod is unfolded for use. Handle pole cooperation drive mechanism pulls the anterior handrail pole and uses first axis to upwards rotate as the axis of rotation simultaneously, and the handrail pole rear end pulls the connecting axle that the support connecting rod used support connecting rod downside and seat rear side to upwards rotate forward as the axis of rotation to the realization is to the whole expansion of doing the seat frame, consequently the utility model discloses can realize the effect that a key is folding or a key expandes, simple operation, stable in structure, simple structure simultaneously.

2. The utility model has the advantages that the transmission rod is arranged between the grab bar and the handle bar, when the handle bar rotates and expands relative to the support rod, namely the handle bar and the support rod are positioned on the same axis, a triangular structure is formed among the first axis, the third axis and the fourth axis, so that the lower support linkage mechanism can be locked; when the relative bracing piece of handle pole rotates foldingly, when handle pole and bracing piece are not in same axis promptly, constitute quadrangle structure between first axis, third axis, fourth axis and the fifth axis to support the linkage structure unblock with the lower part, consequently the utility model discloses when folding, only need to realize the unblock to whole seat frame to a locking device unblock, replace the tradition and adopt a plurality of locking devices to come the complex construction that locks to the seat frame, the simple operation reduces manufacturing cost.

[ description of the drawings ]

The following detailed description of embodiments of the present invention is provided with reference to the accompanying drawings, in which:

fig. 1 is one of the structural schematic diagrams in the expanded state of the present invention.

Fig. 2 is a second schematic structural view in the expanded state of the present invention.

Fig. 3 is a side view of the present invention in the expanded state.

Fig. 4 is an enlarged schematic view of B in fig. 3.

Fig. 5 is one of the structural parts of the locking device of the present invention.

Fig. 6 is a second structural part view of the locking device of the present invention.

Fig. 7 is a schematic view of the present invention in the folding process when the state is changed from the unfolded state to the folded state.

Fig. 8 is a second schematic view of the folding process when the present invention is changed from the unfolded state to the folded state.

Fig. 9 is a schematic view illustrating the completion of folding when the present invention is changed from the unfolded state to the folded state.

Fig. 10 is a side view of the present invention showing the completion of folding when it is changed from the unfolded state to the folded state.

Fig. 11 is a schematic view of the present invention when attached to a stroller frame.

[ detailed description ] embodiments

Embodiments of the present invention will be described in detail below with reference to fig. 1 to 11.

As shown in fig. 1-11, the foldable seat frame for a stroller of the present invention can be changed from an unfolded state to a folded state after unlocking the locking device 100, and includes a seat body 1 capable of being connected to the stroller frame, a lower support linkage mechanism connected to the seat body 1 and capable of being unfolded or folded with respect to the seat body 1, and a handle bar 3 connected to the lower support linkage mechanism; the lower support linkage mechanism comprises a support rod 2, a grab rail 4 and a support connecting rod 5, the lower side of the support rod 2 is rotatably connected with the front side of the seat main body 1, and the upper end of the support rod 2 is rotatably connected with the lower end of the handle rod 3 around a fifth axis A5; the grab rail 4 is connected with the support rod 2 in a rotating way around a first axis A1; the lower side of the support connecting rod 5 is rotatably connected with the rear side of the seat body 1, and the upper end of the support connecting rod 5 is rotatably connected with the rear end of the grab bar 4 around a second axis A2.

And a transmission mechanism which can drive the lower support linkage mechanism to unfold or fold when the handle rod 3 rotates relative to the support rod 2 to unfold or fold is arranged between the handle rod 3 and the grab rail 4. The utility model discloses when folding, earlier with the locking device unblock, operation handlebar pole uses fifth axis forward to overturn downwards, and the while handlebar pole orders about the connecting axle that the bracing piece used seat main part front side and bracing piece downside to rotate downwards as the axis of rotation, and the bracing piece is drawn close toward seat main part one side promptly, and the handlebar pole is drawn close toward bracing piece one side and is drawn close toward seat main part one side. Meanwhile, the handle rod is matched with the transmission mechanism to drive the front part of the armrest rod to rotate downwards by taking the first axis as a rotating shaft, namely, the front part of the armrest rod is drawn close to the lower end of the supporting rod, meanwhile, the rear end of the armrest rod is matched with the supporting connecting rod to rotate downwards by taking the connecting shaft at the lower side of the supporting connecting rod and the connecting shaft at the rear side of the seat as a rotating shaft, namely, the armrest rod and the supporting connecting rod are drawn close to one side of the seat support, so that the seat frame is integrally folded.

When the handle rod is unfolded, the handle rod is operated to upwards and backwards overturn by taking the fifth axis as a rotating shaft until the handle rod is in an unfolded state relative to the supporting rod. Meanwhile, the handle bar drives the supporting rod to rotate upwards by taking the connecting shaft at the front side of the seat body and the lower side of the supporting rod as a rotating shaft, namely, the supporting rod turns over towards one side far away from the seat body until the supporting rod is unfolded for use. Handle pole cooperation drive mechanism pulls the anterior handrail pole and uses first axis to upwards rotate as the axis of rotation simultaneously, and the handrail pole rear end pulls the connecting axle that the support connecting rod used support connecting rod downside and seat rear side to upwards rotate forward as the axis of rotation to the realization is to the whole expansion of doing the seat frame, consequently the utility model discloses can realize the effect that a key is folding or a key expandes, simple operation, stable in structure, simple structure simultaneously.

As shown in fig. 1-3 and 7-10, the transmission mechanism includes a transmission rod 6, the lower end of the transmission rod 6 is rotatably connected with the grab bar 4 around a third axis A3, and the upper end of the transmission rod 6 is rotatably connected with the handle bar 3 near the lower end of the handle bar 3 around a fourth axis a 4. The utility model has the advantages that the transmission rod is arranged between the grab bar and the handle bar, when the handle bar rotates and expands relative to the support rod, namely the handle bar and the support rod are positioned on the same axis, a triangular structure is formed among the first axis, the third axis and the fourth axis, so that the lower support linkage mechanism can be locked; when the relative bracing piece of handle pole rotates foldingly, when handle pole and bracing piece are not in same axis promptly, constitute quadrangle structure between first axis, third axis, fourth axis and the fifth axis to support the linkage structure unblock with the lower part, consequently the utility model discloses when folding, only need to realize the unblock to whole seat frame to a locking device unblock, replaced the tradition and adopted a plurality of locking device to come the complex construction that locks to the seat frame, the simple operation reduces manufacturing cost.

As shown in fig. 1-2, according to design requirements, a U-shaped front handrail rod 41 is disposed between the front ends of the two handrail rods 4, one end of the front handrail rod 41 is connected to the front end of one handrail rod 4, and the other end of the front handrail rod 41 is connected to the front end of the other handrail rod 4.

As shown in fig. 1 to 2, a front bar 7 for supporting the legs of a child is pivotally connected to the front end of the seat body 1 for making the infant more comfortable and safe when seated.

As shown in fig. 1 to 2, a back assembly 8 for supporting the back of a child is rotatably coupled to the rear end of the seat main body 1 in order to make the infant more comfortable and safe when seated.

As shown in fig. 1 to 4, the backrest assembly includes two backrest connecting rods 81 rotatably connected to the rear end of the seat body 1, a U-shaped backrest rod 82 is disposed between the two backrest connecting rods 81, one end of the backrest rod 82 is rotatably connected to one backrest connecting rod 81, and the other end of the backrest rod 82 is rotatably connected to the other backrest connecting rod 81; a locking structure 83 which can lock the backrest rod 82 and the backrest connecting rod 81 when the backrest rod 82 rotates and unfolds relative to the backrest connecting rod 81 is arranged between the backrest rod 82 and the backrest connecting rod 81. When the seat frame is folded, the backrest rod 82 is operated to upwards turn forwards through the rotating shaft between the backrest rod 82 and the backrest connecting rod 81, so that the backrest rod 82 is close to the backrest connecting rod 81, then the backrest connecting rod 81 is operated to drive the backrest rod 82 to upwards turn forwards through the connecting shaft between the backrest connecting rod 81 and the seat body 1, so that the backrest rod 82 and the seat body are close to one side of the seat body, and after the seat frame is folded, the seat frame is small in overall size and convenient to transport and take.

As shown in fig. 4, the locking structure 83 includes a locking notch 831 provided at a lower end of the backrest rod 82, the backrest link 81 is provided with a locking protrusion 832 capable of being engaged with the locking notch 831 when the backrest rod 82 rotates and unfolds relative to the backrest link 81, a spring is provided between the locking protrusion 832 and the backrest link 81 to keep the locking protrusion 832 engaged with the locking notch 831 when the backrest rod 82 rotates and unfolds relative to the backrest link 81, and when the backrest rod 82 unfolds relative to the backrest link 81, the backrest rod 82 and the backrest link 81 can be stably connected to prevent the backrest rod 82 from rotating relative to the backrest link 81, thereby preventing misoperation and ensuring high safety.

As shown in fig. 1-2, according to design requirements, the locking device 100 is disposed between the support rod 2 and the handle rod 3, and the handle rod 3 is provided with an unlocking structure 200 capable of unlocking the locking device 100.

As shown in fig. 5 and 6, the locking device 100 includes a left housing 110 disposed at a lower end of a handle bar 3 and a right housing 120 disposed at an upper end of a support bar 2 and capable of rotating relative to the left housing 110, the left housing 110 and the right housing 120 define a cavity, a rotating block 130 capable of rotating therein and a spline 140 capable of moving laterally therein are disposed in the cavity, a plurality of inclined protrusions 131 having inclined surfaces are circumferentially arrayed on the rotating block 130, a plurality of inclined slots 141 capable of being engaged with the inclined protrusions 131 and driving the spline 140 to move laterally when the rotating block 130 rotates are disposed on the spline 140, clamping grooves 150 capable of being simultaneously clamped with the spline 140 are disposed on the left housing 110 and the right housing 120, a spring 160 for restoring the spline 140 is disposed between the spline 140 and the right housing 120, and a pull rope 170 for pulling the rotating block 130 is disposed in the handle bar 3. The unlocking structure 200 is an unlocking portion provided on the handle bar 3 and capable of being connected to the rotation block 130 through the pulling rope 170.

When unlocking, a user operates the unlocking part to drive the rotating block 130 to rotate through the pull rope 170, so that the inclined protrusion 131 on the rotating block 130 is matched with the inclined groove 141 on the spline 140 in a guiding way, the spline 140 is enabled to move transversely in the cavity and towards one side of the right shell 120, namely, the spline 140 is enabled to be separated from the clamping groove 150 of the left shell 110, the spring 160 is compressed, at the moment, the right shell 120 can rotate relative to the left shell 110, the locking device 100 is unlocked, and the handlebar and the supporting rod are unlocked.

As shown in fig. 5 and 6, be equipped with between left casing 110 and the right casing 120 and rotate the folding locking structure 300 that can lock the two after folding at handle pole 3 relative support bar 2, the utility model discloses after folding, locking structure 300 can lock bracing piece and handle pole relatively, prevents that the handle pole from expanding after folding relative support bar, is convenient for transport, deposits, takes.

As shown in fig. 5 and 6, the locking structure 300 includes a locking slot 310 disposed on the right housing 120, a locking block 320 is disposed on the left housing 110 and can be inserted into the locking slot 310 when the handle bar 3 rotates and folds relative to the support bar 2 to lock the left housing 110 and the right housing 120 with each other, and a return spring, which is not shown in the drawings, is disposed between the locking block 320 and the left housing 110 to return the locking block 320. After the utility model is folded, the locking fixture block 320 is aligned with the locking slot 310, and the reset spring drives the locking fixture block 320 to be clamped into the locking slot 310, i.e. the left shell 110 and the right shell 120 are locked with each other; when the handle bar is unfolded relative to the support bar, because the side wall of the locking fixture block 320 and the side wall of the locking slot 310 are arc surfaces which are mutually guided and matched, the side wall of the locking fixture block 320 and the side wall of the locking slot 310 can compress the return spring, so that the locking fixture block 320 is separated from the locking slot 310, and the left shell 110 and the right shell 120 are unlocked.

Claims (10)

1. A folding seat frame for a baby carrier can be changed from an unfolding state to a folding state after a locking device (100) is unlocked, and is characterized by comprising a seat main body (1) which can be connected to a baby carrier frame, a lower supporting linkage mechanism which is connected to the seat main body (1) and can be unfolded or folded relative to the seat main body (1), and a handle bar (3) connected to the lower supporting linkage mechanism; the lower support linkage includes:

the lower side of the supporting rod (2) is rotatably connected with the front side of the seat main body (1), and the upper end of the supporting rod (2) is rotatably connected with the lower end of the handle rod (3) around a fifth axis (A5);

the grab rail rod (4), the grab rail rod (4) and the support rod (2) are connected around a first axis (A1) in a rotating way;

the lower side of the support connecting rod (5) is rotatably connected with the rear side of the seat main body (1), and the upper end of the support connecting rod (5) is rotatably connected with the rear end of the grab bar (4) around a second axis (A2);

a transmission mechanism which can drive the lower support linkage mechanism to unfold or fold when the handle rod (3) rotates to unfold or fold relative to the support rod (2) is arranged between the handle rod (3) and the grab rail (4).

2. A collapsible seat frame for a stroller according to claim 1, characterized in that the transmission mechanism comprises a transmission rod (6), the lower end of the transmission rod (6) being pivotally connected to the grab bar (4) about a third axis (A3), and the upper end of the transmission rod (6) being pivotally connected to the handlebar (3) near the lower end of the handlebar (3) about a fourth axis (a 4).

3. A foldable seat frame for children's carriage according to claim 1, characterized in that a U-shaped front handrail rod (41) is disposed between the front ends of the two handrail rods (4), one end of the front handrail rod (41) is connected to the front end of one handrail rod (4), and the other end of the front handrail rod (41) is connected to the front end of the other handrail rod (4).

4. A collapsible seat frame for a stroller according to claim 1, characterized in that a front bar (7) for supporting the legs of the child is pivotally connected to the front end of the seat body (1).

5. A collapsible seat frame for a stroller according to claim 1, characterized in that a backrest assembly (8) for supporting the back of a child is pivotally connected to the rear end of the seat body (1).

6. A foldable seat frame for children's carriage according to claim 5, characterized in that said backrest assembly comprises two backrest connecting rods (81) rotatably connected to the rear end of the seat body (1), a U-shaped backrest rod (82) is provided between said two backrest connecting rods (81), one end of said backrest rod (82) is rotatably connected to one backrest connecting rod (81), and the other end of said backrest rod (82) is rotatably connected to the other backrest connecting rod (81); a locking structure (83) which can lock the backrest rod (82) and the backrest connecting rod (81) when the backrest rod (82) rotates and unfolds relative to the backrest connecting rod (81) is arranged between the backrest rod (82) and the backrest connecting rod (81).

7. A foldable seat frame for children's carriage according to claim 6, characterized in that said latch structure (83) comprises a locking notch (831) provided with a lower end of the backrest lever (82), said backrest lever (81) is provided with a locking protrusion (832) capable of being engaged with the locking notch (831) when the backrest lever (82) is unfolded by rotation relative to the backrest lever (81), and a spring is provided between the locking protrusion (832) and the backrest lever (81) for keeping the locking protrusion (832) engaged with the locking notch (831) when the backrest lever (82) is unfolded by rotation relative to the backrest lever (81).

8. A collapsible seat frame for children's carriages according to any of claims 1 to 7, characterised in that the locking device (100) is arranged between the support bar (2) and the handle bar (3), said handle bar (3) being provided with an unlocking structure (200) able to unlock the locking device (100).

9. A foldable seat frame for children's carriage according to claim 8, wherein said locking device (100) comprises a left housing (110) at the lower end of the handle bar (3) and a right housing (120) at the upper end of the support bar (2) and capable of rotating relative to the left housing (110), said left housing (110) and right housing (120) enclose a cavity, said cavity is provided with a rotating block (130) capable of rotating therein and a spline (140) capable of moving laterally therein, said rotating block (130) is circumferentially arrayed with a plurality of inclined protrusions (131) having inclined planes, said spline (140) is provided with a plurality of inclined slots (141) capable of cooperating with the inclined protrusions (131) and driving the spline (140) to move laterally when the rotating block (130) rotates, said left housing (110) and right housing (120) are provided with slots (150) capable of engaging with the spline (140) simultaneously, a spring (160) enabling the spline (140) to reset is arranged between the spline (140) and the right shell (120), and a pull rope (170) used for pulling the rotating block (130) to rotate is arranged in the handle rod (3).

10. A foldable seat frame for children's carriage according to claim 9, characterized in that a locking structure (300) is provided between the left housing (110) and the right housing (120) for locking the handle bar (3) and the support bar (2) after they are rotated relative to each other.

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