Baby carriage framework
[ Field of technology ]
The invention relates to a framework of a baby carrier.
[ Background Art ]
At present, the baby carrier is an indispensable article for children in the growth process. The bassinet on the market can be folded or unfolded generally, but the bassinet skeleton structure of the existing bassinet is quite complex, so that the bassinet is heavy, the volume after folding is still larger, the manufacturing cost is high, and due to the complex structure, people are very laborious when folding, and the bassinet is easy to damage.
The present invention has been made in view of the above drawbacks.
[ Invention ]
The invention aims to overcome the defects of the prior art and provide the baby carriage framework which is simple in structure, convenient to operate and small in size after being folded.
The invention is realized by the following technical scheme:
A stroller frame movable from an unfolded position to a folded position, characterized in that: comprising the following steps:
a front leg 1, wherein a front wheel 1a is connected to the front leg 1;
a rear leg 2, wherein a rear wheel 2a is connected to the rear leg 2;
the lower end of the backrest rod 3 is rotationally connected with the rear leg 2;
the side armrests 4, one end of each side armrest 4 is rotatably connected with the backrest rod 3, and the other end of each side armrest 4 is rotatably connected with the front leg 1;
The seat support rod 5, one end of the seat support rod 5 is rotatably connected with the backrest rod 3, and the other end is rotatably connected with the front leg 1;
and one end of the traction rod 6 is rotationally connected with the front leg 1, and the other end of the traction rod 6 is rotationally connected with the upper end of the rear leg 2.
The framework of the baby carrier is characterized in that: the seat support rod 5 comprises a bearing section 51 for bearing the seat cushion and a bending section 52 which is bent upwards relative to the bearing section 51, the upper end of the bending section 52 is rotationally connected with the backrest rod 3, and the bearing section 51 is rotationally connected with the front leg 1.
The framework of the baby carrier is characterized in that: the rear leg 2 is positioned on the inner side of the backrest rod 3, and the seat support rod 5 is positioned on the outer side of the backrest rod 3.
The framework of the baby carrier is characterized in that: the seat support rod 5 forms a first connection point A with the front leg 1, the side handrail 4 forms a second connection point B with the front leg 1, the traction rod 6 forms a third connection point C with the front leg 1, and the first connection point A is positioned between the second connection point B and the third connection point C.
The framework of the baby carrier is characterized in that: the seat support bar 5 and the backrest bar 3 are connected to form a fourth connection point D, the side armrests 4 and the backrest bar 3 are connected to form a fifth connection point E, the backrest bar 3 and the rear leg 2 are connected to form a sixth connection point F, and the fourth connection point D is located between the fifth connection point E and the sixth connection point F.
The framework of the baby carrier is characterized in that: the locking mechanism of the baby carrier framework is arranged between the backrest rod 3 and the rear leg 2, the locking mechanism comprises a left hinge shell 71 arranged at the lower end of the backrest rod 3 and a right hinge shell 72 arranged on the rear leg 2 and rotationally connected with the left hinge shell 71, the left hinge shell 71 and the right hinge shell 72 enclose a cavity, spline grooves 73 are respectively formed in the inner walls of the left hinge shell 71 and the right hinge shell 72, spline 74 which can transversely slide in the cavity and be separated from the spline grooves 73 on the left hinge shell 71 when the baby carrier framework needs to be folded are arranged in the cavity, a spring 75 which can push the spline 74 to enable the spline 74 to be simultaneously clamped with the spline grooves 73 on the left hinge shell 71 and the right hinge shell 72 when the baby carrier framework is unfolded is arranged between the spline 74 and the right hinge shell 72, and a guy cable 76 which can pull the spline 74 to transversely move is also arranged in the backrest rod 3.
The framework of the baby carrier is characterized in that: the connection position of the bending section 52 and the supporting section 51 is provided with a shielding part 53 which can shield the left hinge shell 71 when the baby carriage framework is unfolded, and the outer peripheral surface of the shielding part 53 is flush with the outer peripheral surface of the left hinge shell 71.
The framework of the baby carrier is characterized in that: the seat support rod 5 is provided with a seat board.
The framework of the baby carrier is characterized in that: the upper end of the backrest rod 3 is rotatably connected with a hand push rod 9.
Compared with the prior art, the invention has the following advantages: in the process of pushing the upper end of the backrest rod to move forwards, the lower end of the backrest rod moves backwards, in the process of moving backwards, the seat support rods with two ends respectively connected with the backrest rod and the front legs rotate backwards, in the process of rotating backwards, the front legs push the traction rods connected with the front legs in a rotating way, the traction rods push the upper ends of the rear legs connected with the traction rods in a rotating way, so that the upper ends of the rear legs move backwards, the lower ends of the rear legs move forwards, the front legs and the rear legs are crossed, and then the framework of the baby carrier is folded. In addition, the seat support rod plays a role in folding the baby carrier framework through linkage and plays a role in supporting the seat to serve as a seat support, so that the baby carrier framework is multipurpose, the number of parts is reduced, the cost is reduced, the structure is simpler, and the design is very ingenious.
[ Description of the drawings ]
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a side view of the invention in an expanded state;
FIG. 3 is one of the side views of the present invention during folding;
FIG. 4 is a second side view of the folding process of the present invention;
FIG. 5 is a third side view of the present invention during folding;
FIG. 6 is a side view of the present invention in a folded state;
FIG. 7 is a perspective view of the seat support bar of the present invention;
FIG. 8 is an exploded view of the components of the present invention;
fig. 9 is a perspective view of the rear leg of the present invention.
[ Detailed description ] of the invention
The invention is further described below with reference to the accompanying drawings:
As shown in fig. 1 to 6, a stroller frame movable from an unfolded position to a folded position, comprising:
a front leg 1, on which a front wheel 1a is connected;
a rear leg 2, on which a rear wheel 2a is connected;
the lower end of the backrest rod 3 is rotationally connected with the rear leg 2;
the side armrests 4, one end of each side armrest 4 is rotatably connected with the backrest rod 3, and the other end of each side armrest 4 is rotatably connected with the front leg 1;
The seat support rod 5, one end of the seat support rod 5 is rotatably connected with the backrest rod 3, and the other end is rotatably connected with the front leg 1;
and one end of the traction rod 6 is rotationally connected with the front leg 1, and the other end of the traction rod 6 is rotationally connected with the upper end of the rear leg 2.
As shown in fig. 1 to 6, the backrest rod 3, the side armrests 4, the front legs 1 and the seat support rods 5 form a four-bar mechanism, in the process of pushing the upper ends of the backrest rod 3 to move forwards, the lower ends of the backrest rod 3 move backwards, in the process of moving backwards, the seat support rods 5 with two ends respectively connected with the backrest rod 3 and the front legs 1 in a rotating way pull the front legs 1 to rotate backwards, in the process of rotating backwards the front legs 1, the front legs 1 push the traction rods 6 connected with the front legs 1 in a rotating way, the traction rods 6 push the upper ends of the rear legs 2 connected with the traction rods in a rotating way, so that the upper ends of the rear legs 2 move backwards, the lower ends of the rear legs 2 move forwards, the front legs 1 and the rear legs 2 are crossed, and therefore, the folding of the framework of the baby carrier is realized, the baby carrier is small in size, small in occupied space, convenient to carry, and flexible to fold.
As shown in fig. 3 to 5, the seat support bar 5 includes a support section 51 for supporting the seat cushion and a bending section 52 bent upward with respect to the support section 51, the upper end of the bending section 52 is rotatably connected to the backrest bar 3, and the support section 51 is rotatably connected to the front leg 1. Therefore, when the back rest bar 3 is pushed forward to fold the stroller frame, the seat support bar 5 can more flexibly pull the front legs 1 to rotate backward, thereby making folding of the stroller frame more flexible.
As shown in fig. 1 and 2, the rear leg 2 is located inside the backrest bar 3, and the seat support bar 5 is located outside the backrest bar 3.
As shown in fig. 2 to 5, the connection position of the seat support bar 5 and the front leg 1 forms a first connection point a, the connection position of the side rail 4 and the front leg 1 forms a second connection point B, the connection position of the traction bar 6 and the front leg 1 forms a third connection point C, and the first connection point a is located between the second connection point B and the third connection point C. Therefore, the folding of the framework of the baby carrier is more flexible and the operation is more convenient.
As shown in fig. 2 to 5, the connection position of the seat support bar 5 and the backrest bar 3 forms a fourth connection point D, the connection position of the side rail 4 and the backrest bar 3 forms a fifth connection point E, the connection position of the backrest bar 3 and the rear leg 2 forms a sixth connection point F, and the fourth connection point D is located between the fifth connection point E and the sixth connection point F. Therefore, the folding of the framework of the baby carrier is more flexible and the operation is more convenient.
As shown in fig. 1, 8 and 9, the locking mechanism of the stroller frame is arranged between the backrest rod 3 and the rear leg 2, the locking mechanism comprises a left hinge shell 71 arranged at the lower end of the backrest rod 3 and a right hinge shell 72 arranged on the rear leg 2 and rotationally connected with the left hinge shell 71, the left hinge shell 71 and the right hinge shell 72 enclose a cavity, spline grooves 73 are respectively arranged on the inner walls of the left hinge shell 71 and the right hinge shell 72, spline 74 which can transversely slide in the cavity and be separated from the spline grooves 73 on the left hinge shell 71 when the stroller frame needs to be folded is arranged in the cavity, a spring 75 which can push the spline 74 to enable the spline 74 to be simultaneously clamped with the spline grooves 73 on the left hinge shell 71 and the right hinge shell 72 when the stroller frame is unfolded is arranged between the spline 74 and the right hinge shell 72, and a pull cable 76 which can pull the spline 74 to transversely move is also arranged in the backrest rod 3. When the stroller frame needs to be folded, the stay rope 76 pulls the spline 74 to move transversely, the spline 74 is separated from the spline groove 73 on the left hinged shell 71, and at the moment, the backrest rod 3 can rotate relative to the rear leg 2, so that the stroller frame can be unlocked and folded. When the stroller frame is in the unfolded state, the spline 74 is simultaneously engaged with the spline grooves 73 on the left hinge shell 71 and the right hinge shell 72, and at this time, the backrest rod 3 cannot rotate relative to the rear leg 2, so that the stroller frame is kept in the unfolded state. Of course, other structures may be adopted for the locking mechanism of the stroller frame, for example, a rotatable hook is provided on the seat support bar 5, and a pin shaft capable of being engaged with or disengaged from the hook is provided on the backrest bar 3, when the hook hooks the pin shaft, the stroller frame is kept unfolded and locked, and when the hook is disengaged from the pin shaft, the stroller frame is unlocked and can be folded.
As shown in fig. 2, 3, 4 and 7, a shielding part 53 capable of shielding the left hinge shell 71 when the stroller frame is unfolded is arranged at the joint position of the bending section 52 and the supporting section 51, and the outer peripheral surface of the shielding part 53 is flush with the outer peripheral surface of the left hinge shell 71. Therefore, the shielding portion 53 conceals the left hinge case 71, making the left hinge case 71 invisible from the side of the stroller frame, which appears more concise and elegant. Moreover, the outer peripheral surface of the shielding portion 53 is flush with the outer peripheral surface of the left hinge case 71 when the stroller frame is unfolded, smooth and flat, and no pinching of hands occurs, and the safety is good.
A seat board (not shown) may be further provided on the seat support bar 5. The seat board can better support the seat cushion, so that the infant can sit more comfortably.
As shown in fig. 1 and 2, the upper end of the backrest rod 3 is rotatably connected with a hand push rod 9.