CN218806045U - Children's shallow frame - Google Patents

Abstract

The utility model discloses a children's shallow frame can follow expansion position and remove to folding position behind unblock locking device, including foreleg and relative it rotate around first axis A and connect the back leg on the foreleg, the foreleg on be connected with the front wheel, the back leg on be connected with the rear wheel, foreleg upper end rotate around second axis B and be connected with the connecting rod, connecting rod and back leg between be equipped with the two pivoted supporting component relatively, the supporting component front end rotate around third axis C and connect in the back leg upper end, the supporting component rear end rotate around fourth axis D and connect in the connecting rod upper end, foreleg and back leg cross arrangement, the supporting component on still be connected with push rod assembly. The utility model aims at overcoming the defects of the prior art and providing a child cart frame which has a simple folding structure and is convenient to fold.

Description

Children's shallow frame

[ technical field ] A method for producing a semiconductor device

The utility model relates to a children's shallow frame.

[ background ] A method for producing a semiconductor device

With the development of society, the baby stroller becomes a necessary tool for the travel of infants. Parents attach more and more importance to the characteristics of easy folding, small volume, convenient storage and the like of the baby stroller besides pursuing the basic requirements of safety and stability of the baby stroller. In view of this, at present, the stroller generally has a foldable function, and when the stroller is used, the stroller is unfolded, and when the stroller is not used, the stroller is folded, so that the stroller is convenient to carry, and the occupied space is reduced. The utility model discloses provide a new implementation scheme in addition.

[ Utility model ] A method for manufacturing a semiconductor device

The utility model aims at overcoming the defects of the prior art and providing a child cart frame which has a simple folding structure and is convenient to fold.

The utility model discloses a realize through following technical scheme:

the utility model provides a children's shallow frame, can follow the expansion position and remove to folding position behind unblock locking device, include foreleg 11 and relative it and rotate around first axis A and connect the back leg 12 on foreleg 11, foreleg 11 on be connected with front wheel 111, back leg 12 on be connected with rear wheel 121, 11 upper ends of foreleg rotate around second axis B and be connected with connecting rod 13, connecting rod 13 and back leg 12 between be equipped with and to be connected in the connecting rod 13 two pivoted supporting component 2 relatively, 2 front ends of supporting component rotate around third axis C and connect in back leg 12 upper ends, 2 rear ends of supporting component rotate around fourth axis D and connect in connecting rod 13 upper end, foreleg 11 and back leg 12 cross arrangement, supporting component 2 on still be connected with push rod assembly 3.

The locking device comprises a first locking structure 14 which is arranged between a front leg 11 and a rear leg 12 and can lock the front leg 11 and the rear leg 12 in an unfolding state, an unlocking piece 15 which can rotate relative to the front leg 11 and the rear leg 12 and unlock the first locking structure 14 is further connected between the upper ends of the supporting component 2 and the rear leg 12, a second locking structure 16 which can lock the unlocking piece 15 and the supporting component 2 is further arranged between the unlocking piece 15 and the supporting component 2, and when the second locking structure 16 is unlocked, the unlocking piece 15 can rotate relative to the supporting component 2 and further unlock the first locking structure 14.

The supporting component 2 comprises a supporting seat 21 connected between the connecting rod 13 and the rear leg 12, the supporting seat 21 is connected with a seat connecting seat 22 capable of rotating in the horizontal plane direction relative to the supporting seat 21, the seat connecting seat 22 is provided with a seat component 4 capable of sitting, the push rod component 3 is rotatably connected to the seat connecting seat 22 and can drive the seat connecting seat 22 to rotate in the horizontal plane direction so as to realize the front and rear reversing of the seat component 4, push rod subassembly 3 and seat connecting seat 22 both sides rotatable coupling and make the position that push rod subassembly 3 can stop including the position of carrying out that can carry out the shallow and be used for driving the rotatory vertical position of seat connecting seat 22 in the horizontal plane direction, push rod subassembly 3 and seat connecting seat 22 between be equipped with and enable push rod subassembly 3 and keep the locking subassembly 7 at the position of carrying out when locking, push rod subassembly 3, seat connecting seat 22 and supporting seat 21 three between still be equipped with and can lock seat connecting seat 22 and supporting seat 21 and enable the control assembly 5 of seat connecting seat 22 and supporting seat 21 unblock when push rod subassembly 3 rotates to vertical position.

The lower end of the push rod component 3 is provided with a transverse shaft 31 which transversely penetrates through the seat connecting seat 22 and can rotate along with the seat connecting seat, the control component 5 comprises a gear 51 arranged on the transverse shaft 31, and the supporting seat 21 is connected with a rack 52 which is meshed with the gear 51 and can slide relative to the supporting seat 21 when the push rod component 3 rotates so as to be clamped and locked or separated from the supporting seat 21.

The positions where the seat connecting seat 22 and the seat assembly 4 stay include a forward direction facing forward and a reverse direction facing backward after rotating in the horizontal plane direction, a third locking structure 53 capable of locking the seat connecting seat 22 and the seat assembly 4 in the forward direction and a fourth locking structure 54 capable of locking the seat connecting seat 22 and the seat assembly 4 in the reverse direction are arranged between the rack 52 and the supporting seat 21, and a stopping assembly 55 capable of preventing the push rod assembly 3 from rotating forward in the vertical position is further arranged between the rack 52 and the supporting seat 21.

The seat connecting seat 22 includes a seat body 221 and a rotating plate 222 connected with the seat body 221 and capable of rotating together, and the supporting seat 21 is disposed between the seat body 221 and the rotating plate 222.

The rack 52 includes a rack body 521, the rack body 521 is provided with a plurality of tooth portions 522 capable of meshing with the gear 51, the front and rear ends of the rack body 521 are provided with a first protruding block 523 and a second protruding block 524 extending downward, the support base 21 is provided with a first sliding groove 211 capable of allowing the first protruding block 523 to slide in the circumferential direction, and the rotary plate 222 is further provided with a second sliding groove 2221 allowing the second protruding block 524 to slide in the front and rear direction.

The third locking structure 53 includes a first clamping protrusion 531 arranged on the front side of the supporting seat 21, and the first protruding block 523 is provided with a first clamping groove 532, which can allow the first clamping protrusion 531 to be clamped into the first clamping protrusion 531 to prevent the seat connecting seat 22 from rotating in the horizontal plane direction when the seat connecting seat 22 and the seat assembly 4 are in the forward direction;

the height of second lug 524 be greater than the height of first lug 523, fourth locking structure 54 including locate supporting seat 21 rear side and can be fixed with first draw-in groove 532 joint when seat connecting seat 22 is in the reversal with seat subassembly 4 second joint arch 541, first spout 211 on and lie in first joint arch 531 one side and be equipped with the recess 542 that undercut and can give way for second lug 524 when rack 52 slides.

Recess 542 on be equipped with the protruding 543 of third joint, second lug 524 on be equipped with the second draw-in groove 544 that can supply the protruding 543 card of third joint to go into, and when seat connecting seat 22 was locked in reverse orientation first draw-in groove 532 fixed with the protruding 541 joint of second joint just the protruding 543 of third joint is fixed with second draw-in groove 544 joint.

The stopping assembly 55 includes a first abutting surface 551, which is disposed on the supporting seat 21 and can abut against an outer wall of the second protrusion 524 when the seat connecting seat 22 and the seat assembly 4 are in the forward direction and the push rod assembly 3 is in the vertical position, and the stopping assembly 55 further includes a second abutting surface 552, which is disposed on the supporting seat 21 and can abut against an outer wall of the first protrusion 523 when the seat connecting seat 22 and the seat assembly 4 are in the reverse direction and the push rod assembly 3 is in the vertical position.

The seat assembly 4 comprises a seat portion 41 connected to the support assembly 2, the seat portion 41 is connected with a backrest portion 42 capable of rotating relative to the seat portion, the backrest portion 42 is connected with an armrest assembly 43 capable of rotating relative to the backrest portion, an adjusting structure 44 capable of enabling the backrest portion 42 to rotate relative to the seat portion 41 to adjust the included angle gear between the backrest portion 42 and the seat portion 41 after unlocking is arranged between the seat portion 41, the backrest portion 42 and the armrest assembly 43, a third locking assembly 45 capable of enabling the armrest assembly 43 and the seat portion 41 to be unlocked when the backrest portion 42 rotates and folds relative to the seat portion 41 is further arranged between the seat portion 41, the backrest portion 42 and the armrest assembly 43, the third locking assembly 45 comprises a locking portion 451 arranged on the seat portion 41, a sliding block 452 capable of sliding up and down relative to the armrest assembly is arranged between the armrest assembly 43, a locking portion 453 capable of sequentially extending into the seat portion 42 and the seat portion 41 and being clamped into the locking portion 452 is arranged on the sliding block 452, a clamping portion 453 capable of sequentially extending into the backrest portion 42 and pushing the armrest assembly is arranged on the sliding block 452, a top surface of rotating and a clamping portion 452 capable of rotating and capable of driving the armrest assembly to rotate and further arranged on the sliding block 452 when the armrest assembly 422 and the armrest assembly is rotated and the backrest portion 422, and the backrest portion is arranged on the folding portion 422, and the sliding block 452 capable of rotating and the sliding block 452 when the backrest portion 422 is arranged on the folding portion 422, and the folding portion is arranged on the folding portion.

Compared with the prior art, the utility model discloses there is following advantage: when the utility model discloses children's shallow frame need be folding, at first with the locking structure unblock, push rod assembly rotates backward, then upwards mention the back leg upper end, the foreleg rotates around first axis A under about gravity, the connecting rod is driven and the relative foreleg in second axis B department rotates, and the connecting rod meets the position with the foreleg and removes to being close to the supporting component front position, the connecting rod meets the position with the supporting component and rotates around the fourth axis and the supporting component front end rotates around the relative back leg of third axis C, and then on supporting component and push rod assembly drawn close the back leg, folding convenient operation, and folding process is smooth and easy moreover.

[ description of the drawings ]

Fig. 1 is a perspective view of a frame of the stroller of the present invention;

fig. 2 is a state diagram of the seat connecting seat and the seat assembly in the stroller frame of the present invention in the forward direction and the push rod assembly in the pushing position;

fig. 3 is a state diagram of the seat connecting seat and the seat assembly in the stroller frame of the present invention in the forward position and the push rod assembly in the vertical position;

fig. 4 is a state diagram of the seat connecting seat and the seat assembly in the stroller frame of the present invention in the reverse direction and the push rod assembly in the vertical position;

FIG. 5 is a diagram of the stroller frame with the seat connecting seat and the seat assembly in opposite directions and the push rod assembly in a pushing position;

fig. 6 is a state diagram of the stroller frame of the present invention when folded;

fig. 7 is a perspective view of the front legs, rear legs and support assembly of the stroller frame of the present invention;

figure 8 is a side view of the front legs, rear legs and support assembly of the stroller frame of the present invention;

FIG. 9 is a state view of the stroller frame of the present invention when folded with the front legs, rear legs and the support members;

fig. 10 is a state diagram of the stroller frame of the present invention when the folding of the front legs, the rear legs and the support members is completed;

FIG. 11 is a perspective view of the seat connecting seat and the push rod assembly of the stroller frame of the present invention;

fig. 12 is an exploded view of the support base, seat connecting base and push rod assembly of the stroller frame of the present invention;

fig. 13 is an exploded view of the seat connecting seat and the push rod assembly of the stroller frame of the present invention;

fig. 14 is a bottom perspective view of the support assembly and the push rod assembly of the stroller frame of the present invention;

figure 15 is an exploded view of the support assembly of the stroller frame of the present invention;

fig. 16 is a perspective view of the turntable in the frame of the stroller of the present invention;

fig. 17 is a perspective view of the third locking structure in the frame of the stroller of the present invention in a locked state;

fig. 18 is a perspective view of the third locking structure of the stroller frame of the present invention in an unlocked state;

fig. 19 is a cross-sectional view of the third locking structure of the stroller frame of the present invention in an unlocked state;

fig. 20 is a perspective view of a fourth locking structure of the stroller frame of the present invention;

fig. 21 is a cross-sectional view of a fourth locking structure of the stroller frame of the present invention;

fig. 22 is a cross-sectional view of the stroller frame of the present invention with the fourth locking structure locked;

fig. 23 is an exploded view of a first locking structure of the stroller frame of the present invention;

fig. 24 is an exploded view of the first and second locking structures of the stroller frame of the present invention;

fig. 25 is a perspective view of a locking structure of the stroller frame of the present invention;

fig. 26 is a second perspective view of the locking structure of the stroller frame of the present invention;

fig. 27 is a cross-sectional view of the locking structure in the frame of the stroller of the present invention;

figure 28 is a perspective view of the seat assembly of the stroller frame of the present invention;

figure 29 is one of the exploded views of the seat assembly of the stroller frame of the present invention;

figure 30 is a second exploded view of the seat assembly of the stroller frame of the present invention;

figure 31 is a third exploded view of the seat assembly of the stroller frame of the present invention.

[ detailed description ] A

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

as shown in fig. 1 to 31, a children's shallow frame can follow the expansion position and remove to folding position behind unblock locking device, include foreleg 11 and relative it and rotate the back leg 12 of connecting on foreleg 11 around first axis A, foreleg 11 on be connected with front wheel 111, back leg 12 on be connected with rear wheel 121, 11 upper ends of foreleg rotate around second axis B and be connected with connecting rod 13, connecting rod 13 and back leg 12 between be equipped with and to be connected in the pivoted supporting component 2 of the two relatively, 2 front ends of supporting component rotate around third axis C and connect in back leg 12 upper end, 2 rear ends of supporting component rotate around fourth axis D and connect in connecting rod 13 upper end, foreleg 11 and back leg 12 cross arrangement, supporting component 2 on still be connected with push rod assembly 3.

When the utility model discloses children's shallow frame need be folding, at first with the locking structure unblock, push rod assembly 3 rotates backward, then upwards mention 12 upper ends of back leg, front leg 11 rotates around first axis A under the action of gravity, connecting rod 13 is driven and rotates at the relative front leg 11 of second axis B department, and connecting rod 13 and front leg 11 meet the position and remove to being close to 2 front positions of supporting component, connecting rod 13 meets the position with supporting component 2 and rotates around fourth axis D and 2 front ends of supporting component rotate around the relative back leg 12 of third axis C, and then on supporting component 2 and push rod assembly 3 drawn close to back leg 12, folding convenient operation, and folding process is smooth and easy. The supporting component 2, the rear legs 12 and the connecting rods 13 are arranged in a triangular shape when being unfolded, so that the supporting is more stable and safer.

As shown in fig. 1 and 7, the locking device includes a first locking structure 14 disposed between the front leg 11 and the rear leg 12 and capable of locking the front leg 11 and the rear leg 12 in the unfolded state, an unlocking member 15 is further connected between the support member 2 and the upper end of the rear leg 12 and capable of rotating relative to the support member and the rear leg to unlock the first locking structure 14, a second locking structure 16 capable of locking the unlocking member 15 and the support member 2 is further disposed between the unlocking member 15 and the support member 2, and when the second locking structure 16 is unlocked, the unlocking member 15 is capable of rotating relative to the support member 2 to unlock the first locking structure 14. When the utility model discloses children's shallow frame need be folding, at first will rotate push rod subassembly 3 to suitable position backward, then 16 unblocks with second closure structure, locking between supporting component 2 and the unblock piece 15 is relieved this moment, mention unblock piece 15 after that, unblock piece 15 relative supporting component 2 rotates and makes the 14 unblock of first closure structure, and 12 upper ends of back leg are mentioned this moment, front leg 11 rotates around first axis A under the action of gravity, connecting rod 13 is driven and rotates at the relative front leg 11 of second axis B department, and connecting rod 13 and front leg 11 meet the position and remove to being close to supporting component 2 front end position, connecting rod 13 meets the position with supporting component 2 and rotates around fourth axis D and supporting component 2 front end rotates around the relative back leg 12 of third axis C, and then on supporting component 2 and push rod subassembly 3 draw close to back leg 12, folding operation is convenient. The second locking structure 16 is locked as a secondary lock to prevent the unlocking member 15 from being operated by mistake to unlock the first locking structure 14

As shown in fig. 2 to 13, the support assembly 2 includes a support base 21 connected between the connecting rod 13 and the rear leg 12, the support base 21 is connected with a seat connecting base 22 capable of rotating in a horizontal direction relative to the support base, the seat connecting base 22 is provided with a seat assembly 4 capable of being seated, the push rod assembly 3 is rotatably connected to the seat connecting base 22 and can drive the seat connecting base 22 to rotate in the horizontal direction so as to realize the front-rear direction change of the seat assembly 4, the push rod assembly 3 and two sides of the seat connecting base 22 are rotatably connected so that the position where the push rod assembly 3 can be stopped includes a pushing position capable of pushing the cart and a vertical position for driving the seat connecting base 22 to rotate in the horizontal direction, a locking assembly 7 capable of keeping the push rod assembly 3 in the pushing position when locked is arranged between the push rod assembly 3 and the seat connecting base 22, and a control assembly 5 capable of locking the seat connecting base 22 and the support base 21 and unlocking the seat connecting base 22 and the support base 21 when the push rod assembly 3 rotates to the vertical position are arranged between the push rod assembly 3, the seat connecting base 22 and the support base 21. After unlocking the locking assembly 7, the push rod assembly 3 can be switched between the push position and the vertical position. The utility model discloses the position that push rod assembly 3 on children's shallow frame stops is including pushing away capable position and vertical position, stop when pushing rod assembly 3 pushes away capable position, the adult can push away children's shallow frame through push rod assembly 3 and walk forward, when push rod assembly 3 rotates forward to vertical position from pushing away capable position, control assembly 5 makes seat connecting seat 22 and supporting seat 21 unblock, the adult can hold push rod assembly 3 of vertical position and drive seat connecting seat 22 rotatory at the horizontal plane direction, when seat connecting seat 22 is rotatory 180 degrees, the seat subassembly 4 has just accomplished the front and back switching-over, seat subassembly 4 is towards the adult this moment. Therefore, when the adult operates the seat component 4 to change the direction, only the push rod component 3 needs to be rotated forwards in the vertical plane direction, so that the push rod component 3 moves to the vertical position from the pushing position and then rotates the push rod component 3 in the horizontal plane direction, and the operation is very convenient and fast.

As shown in fig. 14 to 22, the lower end of the push rod assembly 3 is provided with a transverse shaft 31 which transversely penetrates through the seat connecting seat 22 and can rotate along with the seat connecting seat, the control assembly 5 comprises a gear 51 arranged on the transverse shaft 31, and the support seat 21 is connected with a rack 52 which is engaged with the gear 51 and can slide relative to the support seat 21 when the push rod assembly 3 rotates so as to be locked with or unlocked from the support seat 21. When the push rod assembly 3 is rotated forward to move from the pushing displacement to the vertical position, the gear 51 on the transverse shaft 31 is meshed with the rack 52 to drive the rack 52 to slide relative to the support base 21 and be in a state of being separated and unlocked from the support base 21, and the seat connecting base 22 can be rotated and reversed relative to the support base 21. When the push rod assembly 3 rotates back to the push position, the rack 52 is locked with the support base 21, and the seat connecting base 22 is prevented from rotating in the horizontal plane direction.

As shown in fig. 14 to 22, the positions where the seat connecting seat 22 and the seat assembly 4 stay include a forward direction facing forward and a reverse direction facing backward after rotating in the horizontal plane, a third locking structure 53 capable of locking the seat connecting seat 22 and the seat assembly 4 in the forward direction and a fourth locking structure 54 capable of locking the seat connecting seat 22 and the seat assembly 4 in the reverse direction are disposed between the rack 52 and the supporting seat 21, and a stop assembly 55 capable of preventing the push rod assembly 3 from rotating forward in the vertical direction is further disposed between the rack 52 and the supporting seat 21. More importantly, the arrangement of the stopping component 55 can prevent the push rod component 3 from continuously rotating forwards when the push rod component is in the vertical position, so that the misoperation that the push rod component 3 rotates forwards due to unbalanced force application when torsion in the horizontal plane direction is applied to the push rod component 3 in the vertical position is avoided, the safety is ensured, and the stopping component 55 also ensures that the push rod component 3 can only rotate backwards to return to the pushing position after the seat component 4 is reversed, so that the use reliability of the cart is ensured.

As shown in fig. 14 to 22, the seat connecting seat 22 includes a seat body 221 and a rotating plate 222 connected to the seat body 221 and capable of rotating together, and the supporting seat 21 is disposed between the seat body 221 and the rotating plate 222. The rotation plate 222 is connected to the seat 221 through a connecting member such as a screw, and when the seat 221 is pushed to rotate relative to the support base 21, the rotation plate 222 rotates together.

As shown in fig. 14 to 22, the rack 52 includes a rack body 521, the rack body 521 is provided with a plurality of tooth portions 522 capable of meshing with the gear 51, the rack body 521 is provided at front and rear ends thereof with a first protrusion 523 and a second protrusion 524 extending downward, the support base 21 is provided with a first sliding groove 211 capable of allowing the first protrusion 523 to slide in the circumferential direction, and the turntable 222 is further provided with a second sliding groove 2221 allowing the second protrusion 524 to slide in the circumferential direction. The gear 51 is in meshing transmission with the tooth 522, the first sliding groove 211 is provided for the first projection 523 to slide in, the second sliding groove 2221 is provided for the second projection 524 to slide in, and when the first projection 523 slides in the first sliding groove 211 along the circumferential direction, the second projection 524 is located in the second sliding groove 2221 and rotates in the horizontal plane direction together with the rotating disc 222.

As shown in fig. 14 to 22, the third locking structure 53 includes a first engaging protrusion 531 disposed on the front side of the supporting seat 21, and the first protrusion 523 is provided with a first engaging groove 532, which is capable of allowing the first engaging protrusion 523 to engage with and prevent the seat connecting seat 22 from rotating in the horizontal plane direction when the seat connecting seat 22 and the seat assembly 4 are in the forward direction; the height of second lug 524 be greater than the height of first lug 523, fourth closure structure 54 including locate the protruding 541 of second joint of supporting seat 21 rear side, first spout 211 on and lie in protruding 523 one side of first joint and be equipped with the undercut and can be for the recess 542 that second lug 524 abduced when rack 52 slides. The height of the second protrusion 524 is greater than that of the first protrusion 523, so that the recess 542 and the first sliding groove 211 form a step arranged up and down. When the seat connecting seat 22 and the seat assembly 4 are in the forward position and the push rod assembly 3 is in the push position, the rack 52 prevents the seat connecting seat 22 from rotating in the horizontal plane direction by mutually clamping and locking the first clamping groove 532 and the first clamping protrusion 531 thereon, and at this time, the second projection 524 is located in the second sliding groove 2221; when the seat connecting seat 22 and the seat assembly 4 are in the forward position and the push rod assembly 3 is in the vertical position, the rack 52 slides to separate the first engaging protrusion 531 from the first engaging groove 532 on the first protrusion 523, the first protrusion 523 enters the first sliding groove 211, and the second protrusion 524 is still located in the second sliding groove 2221, so that the seat connecting seat 22 can rotate and change direction relative to the supporting seat 21.

When the push rod assembly 3 is in the vertical position and the seat connecting seat 22 and the seat assembly 4 are rotated by the forward position to reverse position, the rack 52 rotates 180 degrees, at the moment, the first clamping groove 532 on the first lug 523 corresponds to the second clamping protrusion 541, the second lug 524 corresponds to the groove 542, and when the seat connecting seat 22 and the seat assembly 4 are in the reverse position and the push rod assembly 3 is rotated by the vertical position to the pushing position, the rack 52 is driven by the gear 51 to slide relative to the supporting seat 21, at the moment, the second lug 524 slides forward to the groove 542, the first clamping groove 532 and the second clamping protrusion 541 are clamped, and at the moment, the seat connecting seat 22 cannot rotate relative to the supporting seat 21. The recess 542 is not only used to give way to the second protrusion 524, but the wall of the recess 542 can also abut against the second protrusion 524 to prevent the seat attachment base 22 from rotating in the horizontal plane.

As shown in fig. 14 to fig. 22, the groove 542 is provided with a third engaging projection 543, the second protrusion 524 is provided with a second engaging groove 544 into which the third engaging projection 543 can be inserted, and when the seat connector base 22 is locked in the reverse direction, the first engaging groove 532 and the second engaging projection 541 are engaged and fixed, and the third engaging projection 543 and the second engaging groove 544 are engaged and fixed. And when the seat connecting seat 22 and the seat assembly 4 are in the opposite directions and the push rod assembly 3 rotates from the vertical position to the pushing position, the rack 52 is driven by the gear 51 to slide relative to the supporting seat 21, at this time, the second bump 524 slides forward into the groove 542, so that the second clamping groove 544 is clamped and fixed with the third clamping protrusion 543, and meanwhile, the first clamping groove 532 is clamped and fixed with the second clamping protrusion 541, so that the double-locking effect is achieved, and the seat connecting seat 22 and the supporting seat 21 are connected more stably.

As shown in fig. 14 to 22, the stopping assembly 55 includes a first abutting surface 551 disposed on the supporting base 21 and capable of abutting against an outer wall of the second protrusion 524 when the seat connecting base 22 and the seat assembly 4 are in the forward direction and the push rod assembly 3 is in the vertical position, and the stopping assembly 55 further includes a second abutting surface 552 disposed on the supporting base 21 and capable of abutting against an outer wall of the first protrusion 523 when the seat connecting base 22 and the seat assembly 4 are in the reverse direction and the push rod assembly 3 is in the vertical position. When the seat connecting seat 22 and the seat assembly 4 are in the forward direction and the push rod assembly 3 is in the vertical position, the first abutting surface 551 and the second projection 524 abut against each other, and the first abutting surface 551 can prevent the rack 52 from further moving, so that the push rod assembly 3 is prevented from further rotating forwards in the vertical position, and the seat connecting seat is safer. When the seat connecting seat 22 and the seat assembly 4 are in the reverse direction and the push rod assembly 3 is in the vertical position, the second abutting surface 552 abuts against the first lug 523, and at this time, the second abutting surface 552 can prevent the rack 52 from moving further, so that the push rod assembly 3 is prevented from rotating forwards in the vertical position, and the seat connecting seat is safer.

As shown in fig. 12 to 13, the locking assembly 7 includes a left housing 71 disposed on the seat connecting seat 22 and a right housing 72 disposed on the push rod assembly 3, a receiving cavity 73 is defined between the left housing 71 and the right housing 72, spline grooves 74 are formed in the left housing 71 and the right housing 72, a spline 75 capable of sliding up and down relative to the left housing 71 and the right housing 72 and simultaneously engaged with the spline grooves 74 in the left housing 71 and the right housing 72 is disposed in the receiving cavity 73, a sliding unlocking member 76 is disposed on the push rod assembly 3, a first cable 77 capable of disengaging the spline 75 from the left housing 71 when the sliding unlocking member 76 slides is disposed between the sliding unlocking member 76 and the spline 75, and a first elastic member 78 capable of resetting the spline 75 is connected between the spline 75 and the right housing 72. When the push rod assembly 3 needs to be rotated, the sliding unlocking part 76 is pulled upwards, the sliding unlocking part 76 drives the first cable 77 to move upwards, the first cable 77 pulls the spline 75 to transversely slide, the spline 75 compresses the first elastic part 78 when transversely sliding, meanwhile, the spline 75 is separated from the spline groove 74 on the left shell 71 and completely enters the right shell 72, the push rod assembly 3 can be rotated relative to the seat connecting seat 22, and the push rod assembly 3 can be folded or rotated to a vertical position by a pushing position.

As shown in fig. 23 to 24, the first locking structure 14 includes a first locking position 141 disposed on the front leg 11, the rear leg 12 is connected with a locking member 142 capable of sliding relative to the rear leg to be locked in or separated from the first locking position 141, the unlocking member 15 is provided with a protrusion 151 protruding outward, a second pulling cable 143 capable of connecting the protrusion 151 and the locking member 142 and driving the locking member 142 to be separated from the first locking position 141 when the unlocking member 15 is moved is disposed between the protrusion 151 and the locking member 142, and the rear leg 12 is provided with a second elastic member 144 capable of abutting against the locking member 142 to enable the locking member 142 to be locked in the first locking position 141. When the second locking structure 16 is unlocked, the unlocking member 15 is pulled upwards and rotates relative to the rear leg 12 and the support base 21, the protrusion 151 on the unlocking member 15 rotates along with the rotation to drive the second pulling cable 143 to move, the second pulling cable 143 pulls the locking member 142 to move upwards, the locking member 142 gradually disengages from the first locking position 141, the second elastic member 144 is in a compressed state, and at this time, the front leg 11 can rotate relative to the rear leg 12.

As shown in fig. 23 to 24, the second locking structure 16 includes a second locking portion 161 disposed on the unlocking member 15, the supporting base 21 is provided with a latch 162 capable of sliding relative to the supporting base to be locked in or unlocked from the second locking portion 161, the latch 162 is provided with an operating portion 1621 protruding outward and allowing the latch 162 to be unlocked from the second locking portion 161 when being operated, and a third elastic member 163 capable of allowing the latch 162 to maintain a locked state is disposed between the latch 162 and the supporting base 21. When the operating portion 1621 is shifted laterally, the entire latch 162 slides laterally relative to the supporting base 21 when the operating portion 1621 slides, the latch 162 gradually disengages from the second locking position 161, the third elastic member 163 is compressed, and the unlocking member 15 can rotate upward relative to the supporting member 2 to unlock the first locking structure 14.

As shown in fig. 28, the seat assembly 4 includes a seat portion 41 connected to the support assembly 2, the seat portion 41 is connected to a backrest portion 42 capable of rotating relative to the seat portion, the backrest portion 42 is connected to an armrest assembly 43 capable of rotating relative to the backrest portion, an adjusting mechanism 44 capable of rotating the backrest portion 42 relative to the seat portion 41 to adjust an angle between the backrest portion 42 and the seat portion 41 after unlocking is disposed between the seat portion 41 and the backrest portion 42, and a third locking assembly 45 capable of unlocking the armrest assembly 43 and the seat portion 41 when the backrest portion 42 rotates and folds relative to the seat portion 41 is disposed between the seat portion 41, the backrest portion 42 and the armrest assembly 43. When the seat assembly 4 is folded, the adjustment structure 44 needs to be unlocked, and then the backrest portion 42 is rotated, so that the backrest portion 42 drives the third locking assembly 45 to be unlocked, and thus the folding is performed.

As shown in fig. 29 to 31, the adjusting structure 44 includes a plurality of adjusting positions 441 circumferentially arranged on the seat portion 41 at intervals, the backrest portion 42 is provided with a snapping member 442 capable of sliding relative to the backrest portion 42 to be snapped into or out of the adjusting positions 441, the backrest portion 42 is further provided with an operating member 443, a third pulling cable 444 capable of pulling the snapping member 142 to be out of the adjusting positions 441 is arranged between the operating member 443 and the snapping member 142, a fourth elastic member 445 capable of keeping the snapping member 142 in a snapping state is arranged between the snapping member 142 and the backrest portion 42, the backrest portion 42 is provided with a positioning protrusion 421, and the seat portion 41 is provided with a positioning groove 411 capable of allowing the positioning protrusion 421 to move therein. The positioning projection 421 and the positioning groove 411 cooperate to define the range of forward and backward rotation of the backrest portion 42. When the included angle gear between the seat portion 41 and the backrest portion needs to be adjusted, the operating element 443 is operated to pull the third cable 444, the third cable 444 drives the clamping member 442 to be separated from the adjustment position 441, the backrest portion 42 can rotate relative to the seat portion 41 to adjust the included angle gear, when the backrest portion 42 is adjusted to the proper position, the operating element 443 is released, and the fourth elastic member 445 pushes the clamping member 442 to reset so that the clamping member 442 is clamped into the adjustment position 441 again.

As shown in fig. 29 to 31, the third locking assembly 45 includes a locking portion 451 provided on the seat portion 41, a slide block 452 capable of sliding up and down relative to the seat portion 41 is provided between the armrest assemblies 43, a locking portion 453 capable of sequentially extending into the backrest portion 42 and the seat portion 41 and being locked into the locking portion 451 is provided on the slide block 452, an arc protrusion 454 capable of pushing the locking portion 453 to slide upward when the backrest portion 42 is rotated and folded is provided on the backrest portion, and a fifth elastic member 455 capable of keeping the locking portion 453 in a locked state is provided between the slide block 452 and the armrest assemblies 43. When the seat assembly 4 needs to be folded, the adjusting structure 44 is unlocked first, then the backrest 42 is pushed to rotate toward the seat portion 41, the arc-shaped protrusion 454 on the backrest 42 gradually pushes the latching portion 453 to move upward during the rotation of the backrest 42, so that the latching portion 453 is separated from the latching portion 451 on the seat portion 41, at this time, the third locking assembly 45 is unlocked, and the whole armrest assembly 43 can rotate relative to the seat portion 41 to be folded.

As shown in fig. 29 to 31, the backrest portion 42 is provided with a first abutting surface 423 capable of abutting against the slider 452 when the backrest portion is unfolded to drive the armrest assembly 43 to rotate and unfold upward, and the backrest portion 42 is further provided with a second abutting surface 424 capable of abutting against the slider 452 when the backrest portion is folded to drive the armrest assembly 43 to rotate and fold downward. When the backrest 42 is folded by rotating forward, the second abutting surface 424 abuts against the locking part 453 on the sliding block 452 gradually, so that the armrest assembly 43 is driven by the backrest 42 to be folded, when the backrest 42 is unfolded by rotating backward, the first abutting surface 423 abuts against the locking part 453 on the sliding block 452 gradually, so that the armrest assembly 43 is driven by the backrest 42 to be unfolded, and the folding and unfolding operation of the seat assembly 4 is very convenient only by pulling the backrest 42.

As shown in fig. 11 and fig. 25 to fig. 27, the seat portion 41 is detachably connected to the support assembly 2, the seat portion 41 is provided with a plurality of positioning portions 412 protruding downward, the seat connecting base 22 is provided with a plurality of positioning slots 221 capable of positioning and accommodating the positioning portions 412, a locking structure 6 capable of locking the seat portion 41 and the seat connecting base 22 is provided between the seat portion 41 and the seat connecting base 22, the locking structure 6 includes a plurality of sliding slots 61 provided on the seat portion 41, each sliding slot 61 is provided with a first sliding member 62 capable of sliding up and down relative to the sliding slot, the first sliding member 62 is provided with a locking slot 63, a first spring 64 for pushing the first sliding member 62 to return is provided between the first sliding member 62 and the seat portion 41, the support assembly 2 is provided with a plurality of second sliding members 65 capable of sliding transversely relative to the support assembly, the second sliding members 65 are provided with locking tongues 651 capable of being locked into the locking slots 63, a second spring 66 which can enable the latch 651 to keep locked is arranged between the second sliding member 65 and the seat connecting seat 22, the support assembly 2 is further provided with two sliding unlocking bars 67 which can slide back and forth relative to the support assembly, the sliding unlocking bars 67 are provided with bolts 68 at intervals which can be respectively clamped into the two second sliding members 65, the front end and the rear end of each sliding unlocking bar 67 are provided with a front operation part 671 and a rear operation part 672 which are protruded out of the seat connecting seat 22, the sliding unlocking bar 67 is further provided with a V-shaped groove 673 which can enable the bolt 68 to move in after the front operation part 671 and the rear operation part 672 are pressed, the V-shaped groove 673 is provided with a first pressing surface 6731 which can push the bolt 68 when the front operation part 671 is operated so as to enable the latch 651 on the second sliding member 65 to be separated from the latch opening 63, the V-shaped groove 673 is further provided with a second pressing surface 6732 capable of pushing the latch 68 to disengage the latch 651 of the second sliding member 65 from the latch notch 63 when the rear operation portion 672 is operated. When the seat assembly 4 is detachably connected to the seat connecting seat 22 through the seat portion 41 thereon, the positioning portion 412 on the seat portion 41 is aligned with the positioning slot 221 on the seat connecting seat 22, and then the seat portion 41 is pressed downward, at this time, the positioning portion 412 pushes the latch 651 on the second sliding member 65 to retract the latch 651 into the seat connecting seat 22, the second spring 66 is pressed and compressed, the seat portion 41 slides downward until the latch 651 is aligned with the latch opening 63, the second spring 66 pushes the second sliding member 65 to slide reversely, at this time, the latch 651 gradually pushes into the latch opening 63, and the first spring 64 is also compressed when the first sliding member 62 moves downward. When the seat assembly 4 is separated from the support assembly 2 by unlocking the seat portion 41 and the seat connecting seat 22, the front operating portion 671 or the rear operating portion 672 is operated, the slide unlocking bar 67 slides forwards or backwards, the first pressing surface 6731 or the second pressing surface 6732 of the V-shaped groove 673 on the slide unlocking bar 67 pushes the plug pin 68 to slide transversely, the plug pin 68 drives the second sliding member 65 to slide transversely relative to the seat connecting seat 22 during sliding, so that the latch 651 is gradually separated from the latch opening 63, when the latch 651 is separated from the latch opening 63, the first spring 64 is reset, the seat assembly moves upwards, the latch opening 63 is also reduced, even if the latch 651 is reset transversely, the latch cannot be clamped into the latch opening 63, and the user can conveniently release the front and rear operating portions to take down the seat assembly after releasing the front and rear operating portions, so that the operation is convenient. The V-shaped groove 673 is provided so that an adult can unlock the locking mechanism 6 both at the front and rear sides of the frame, thereby facilitating unlocking of the seat assembly 4.

Claims (11)

1. The utility model provides a children's shallow frame can remove to folding position from the expansion position after unblock locking device, its characterized in that: including preceding leg (11) and relative it rotate around first axis (A) and connect back leg (12) on preceding leg (11), preceding leg (11) on be connected with front wheel (111), back leg (12) on be connected with rear wheel (121), preceding leg (11) upper end rotate around second axis (B) and be connected with connecting rod (13), connecting rod (13) and back leg (12) between be equipped with support assembly (2) that can be relative the two pivoted, support assembly (2) front end rotate around third axis (C) and connect in back leg (12) upper end, support assembly (2) rear end rotate around fourth axis (D) and connect in connecting rod (13) upper end, preceding leg (11) and back leg (12) cross arrangement, support assembly (2) on still be connected with push rod assembly (3).

2. The stroller frame of claim 1, wherein: the locking device comprises a first locking structure (14) arranged between a front leg (11) and a rear leg (12) and capable of locking the front leg (11) and the rear leg (12) in an unfolded state, an unlocking piece (15) capable of rotating relative to the front leg (11) and the rear leg (12) to unlock the first locking structure (14) is further connected between the supporting component (2) and the upper end of the rear leg (12), a second locking structure (16) capable of locking the unlocking piece (15) and the supporting component (2) is further arranged between the unlocking piece (15) and the supporting component (2), and when the second locking structure (16) is unlocked, the unlocking piece (15) can rotate relative to the supporting component (2) to unlock the first locking structure (14).

3. A stroller frame according to claim 1, characterized in that: support assembly (2) including connecting support seat (21) between connecting rod (13) and back leg (12), support seat (21) on be connected with relatively its seat connecting seat (22) at the horizontal plane direction rotation, seat connecting seat (22) on be equipped with seat subassembly (4) that can supply to take, push rod subassembly (3) rotate connect on seat connecting seat (22) and can drive seat connecting seat (22) in the rotatory vertical position in order to realize seat subassembly (4) front and back switching-over of horizontal plane direction, push rod subassembly (3) and seat connecting seat (22) both sides rotatable coupling and make the position that push rod subassembly (3) can stop including can push the push away the position of shallow and be used for driving seat connecting seat (22) at the rotatory vertical position of horizontal plane direction, push rod subassembly (3) and seat connecting seat (22) between be equipped with and can make push rod subassembly (3) keep the locking subassembly (7) at the push away position when locking, push rod subassembly (3), seat connecting seat (22) and support seat connecting seat (22) three still be equipped with between the locking and can lock push rod subassembly (22) and make the seat subassembly (21) rotate and push rod subassembly (5) and make the rotation of push rod subassembly (5) and support seat subassembly (5).

4. The stroller frame of claim 3, wherein: push rod subassembly (3) lower extreme be equipped with transversely wear to establish seat connecting seat (22) and can follow its pivoted horizontal axle (31), control assembly (5) including locating gear (51) on horizontal axle (31), supporting seat (21) on be connected with gear (51) meshing and can slide relative supporting seat (21) when push rod subassembly (3) rotate and with supporting seat (21) block locking or throw off rack (52) of unblock.

5. The stroller frame of claim 4, wherein: the position that seat connecting seat (22) and seat subassembly (4) stop include the positive position of orientation the place ahead and in the rotatory back reverse position of orientation rear of horizontal plane direction, rack (52) and supporting seat (21) between be equipped with can lock seat connecting seat (22) and seat subassembly (4) in the third closure structure (53) of positive position and can lock seat connecting seat (22) and seat subassembly (4) in the fourth closure structure (54) of reverse position, rack (52) and supporting seat (21) between still be equipped with and prevent push rod subassembly (3) forward pivoted backstop subassembly (55) in vertical position.

6. The stroller frame of claim 5, wherein: the seat connecting seat (22) comprises a seat body (221) and a rotating disc (222) which is connected with the seat body (221) and can rotate together, and the supporting seat (21) is arranged between the seat body (221) and the rotating disc (222).

7. The stroller frame of claim 6, wherein: the rack (52) comprises a rack body (521), a plurality of tooth parts (522) capable of being meshed with the gear (51) are arranged on the rack body (521), a first protruding block (523) and a second protruding block (524) extending downwards are arranged at the front end and the rear end of the rack body (521), a first sliding groove (211) capable of allowing the first protruding block (523) to slide along the circumferential direction is formed in the supporting seat (21), and a second sliding groove (2221) capable of allowing the second protruding block (524) to slide back and forth is further formed in the rotary disc (222).

8. The stroller frame of claim 7, wherein: the third locking structure (53) comprises a first clamping protrusion (531) arranged on the front side of the supporting seat (21), and a first clamping groove (532) which can be used for clamping the first clamping protrusion (531) when the seat connecting seat (22) and the seat component (4) are in the positive direction so as to prevent the seat connecting seat (22) from rotating in the horizontal plane direction is arranged on the first convex block (523);

the height that highly is greater than first lug (523) of second lug (524), fourth locking structure (54) including locate supporting seat (21) rear side and can be in the fixed second joint arch (541) of first draw-in groove (532) joint when turning over to the position with seat subassembly (4) in seat connecting seat (22), first spout (211) on and be located the protruding (531) one side of first joint and be equipped with the undercut and can be for recess (542) that second lug (524) abdicate when rack (52) slide.

9. The stroller frame of claim 8, wherein: recess (542) on be equipped with third joint arch (543), second lug (524) on be equipped with second draw-in groove (544) that can supply the protruding (543) card of third joint to go into, and when seat connecting seat (22) by the locking in reverse when first draw-in groove (532) fixed just with the protruding (541) joint of second joint third joint arch (543) fixed with second draw-in groove (544) joint.

10. The stroller frame of claim 7, wherein: the stop assembly (55) comprises a first abutting surface (551) which is arranged on the supporting seat (21) and can abut against the outer wall of the second bump (524) when the seat connecting seat (22) and the seat assembly (4) are in the forward direction and the push rod assembly (3) is in the vertical position, and the stop assembly (55) further comprises a second abutting surface (552) which is arranged on the supporting seat (21) and can abut against the outer wall of the first bump (523) when the seat connecting seat (22) and the seat assembly (4) are in the reverse direction and the push rod assembly (3) is in the vertical position.

11. The stroller frame of claim 3, wherein: the seat assembly (4) comprises a seat part (41) connected to the support assembly (2), the seat part (41) is connected with a backrest part (42) capable of rotating relative to the seat part, the backrest part (42) is connected with an armrest assembly (43) capable of rotating relative to the backrest part, an adjusting structure (44) capable of enabling the backrest part (42) to rotate relative to the seat part (41) after unlocking and adjusting the included angle gear between the backrest part (42) and the seat part (41) is arranged between the seat part (41) and the backrest part (42) and the armrest assembly (43), a third locking assembly (45) capable of enabling the armrest assembly (43) and the seat part (41) to be unlocked is further arranged between the seat part (41) and the backrest part (42) and the armrest assembly (43), the third locking assembly (45) capable of being unlocked when the backrest part (42) rotates and folds relative to the seat part (41), the third locking assembly (45) comprises a locking position (451) arranged on the seat part (41), a sliding block (452) capable of sliding up and down relative to slide is arranged between the armrest assembly (43), a sliding block (452) capable of sliding upwards is arranged on the backrest part (454), and a block (451) capable of upwards pushing the sliding lock (454) is arranged on the backrest part (42) in turn, a fifth elastic element (455) capable of enabling the locking part (453) to keep in a locking state is arranged between the sliding block (452) and the handrail assembly (43), a first abutting surface (422) capable of abutting against the sliding block (452) to drive the handrail assembly (43) to rotate upwards to be unfolded when the backrest part is unfolded is arranged on the backrest part (42), and a second abutting surface (423) capable of abutting against the sliding block (452) to drive the handrail assembly (43) to rotate downwards to be folded when the backrest part is folded is further arranged on the backrest part (42).

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