CN112061219B - Support frame and infant handcart using same - Google Patents
Support frame and infant handcart using same Download PDFInfo
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- CN112061219B CN112061219B CN202011067246.2A CN202011067246A CN112061219B CN 112061219 B CN112061219 B CN 112061219B CN 202011067246 A CN202011067246 A CN 202011067246A CN 112061219 B CN112061219 B CN 112061219B
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- rod
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- support rod
- symmetry plane
- vertical symmetry
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- 230000005540 biological transmission Effects 0.000 claims description 11
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B7/00—Carriages for children; Perambulators, e.g. dolls' perambulators
- B62B7/04—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor
- B62B7/06—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)
Abstract
The invention discloses a support frame and an infant handcart, which are provided with a vertical symmetrical plane, a base, a connecting rod, a sliding piece, a left lower support rod, a right lower support rod, a left upper support rod and a right upper support rod, wherein the left lower support rod is rotationally connected with the base around a first axis, the right lower support rod is rotationally connected with the base around a second axis, the left upper support rod is rotationally connected with the sliding piece around a third axis, the left lower support rod is rotationally connected on the left upper support rod, the right upper support rod is rotationally connected with the sliding piece around a fourth axis, and the right lower support rod is rotationally connected on the right upper support rod; the first axis, the second axis, the third axis and the fourth axis are all arranged at an acute angle with the vertical symmetry plane, and when the sliding piece slides downwards, the lower end of the left upper support rod, the rear end of the left lower support rod, the lower end of the right upper support rod and the rear end of the right lower support rod move from a position far away from the vertical symmetry plane to a position close to the vertical symmetry plane. The support frame and the infant handcart of the invention have small volume after being folded.
Description
[ Field of technology ]
The invention relates to a support frame and an infant handcart using the same.
[ Background Art ]
Many products at present need to be used for folding frames, such as baby carriages or pet carriages, so as to be unfolded or folded, but the existing folding frames are large in size, inconvenient to fold, large in size after folding and inconvenient to carry.
[ Invention ]
The invention aims to overcome the defects of the prior art and provide the support frame which is convenient to fold and small in size after folding and the infant handcart using the support frame.
The invention is realized by the following technical scheme:
A support frame having a vertical plane of symmetry SP and being movable from an extended position to a folded position, characterized in that: the device comprises a base 1, wherein a connecting rod 2 is connected to the base 1, a lower support 3 is further arranged on the base 1, the lower support 3 comprises a left lower support rod 31 and a right lower support rod 32 which are arranged on two sides of a vertical symmetry plane SP, the front end of the left lower support rod 31 is rotationally connected with the base 1 around a first axis A, the front end of the right lower support rod 32 is rotationally connected with the base 1 around a second axis B, a sliding piece 4 capable of sliding relative to the connecting rod 2 is further arranged on the connecting rod 2, an upper support 5 which can be close to the left lower support rod 31 and the right lower support rod 32 when the sliding piece 4 slides downwards relative to the connecting rod 2 is arranged between the sliding piece 4 and the lower support 3, the upper support 5 comprises a left upper support rod 51 and a right upper support rod 52 which are arranged on two sides of the vertical symmetry plane SP, the upper end of the left upper support rod 51 is rotationally connected with the sliding piece 4 around a third axis C, the rear end of the left lower support rod 31 is rotationally connected with the left upper support rod 51, the upper end of the right upper support rod 52 is rotationally connected with the sliding piece 4 around a fourth axis D, and the lower end of the right upper support rod 52 is rotationally connected with the right upper support rod 52; the first axis a and the vertical symmetry plane SP are disposed at an acute angle, and the third axis C and the vertical symmetry plane SP are disposed at an acute angle, so that when the sliding member 4 slides down, the lower end of the upper left support rod 51 and the rear end of the lower left support rod 31 can move from a position far from the vertical symmetry plane SP to a position close to the vertical symmetry plane SP; the second axis B is disposed at an acute angle to the vertical symmetry plane SP, and the fourth axis D is disposed at an acute angle to the vertical symmetry plane SP, so that when the slider 4 slides down, the lower end of the upper right support rod 52 and the rear end of the lower right support rod 32 can move from a position away from the vertical symmetry plane SP to a position close to the vertical symmetry plane SP.
The lower end of the upper left supporting rod 51 is rotatably connected with the rear end of the lower left supporting rod 31 around a fifth axis E, and the upper left supporting rod is arranged at an acute angle with a vertical symmetry plane SP around the fifth axis E; the lower end of the upper right support rod 52 is rotatably connected to the rear end of the lower right support rod 32 about a sixth axis F, and the sixth axis F is disposed at an acute angle to the vertical symmetry plane SP.
Infant pushchair having a vertical plane of symmetry SP and being movable from an unfolded position to a folded position after unlocking the locking means 6, characterized in that: comprises a supporting frame and a push rod assembly 7 connected to the supporting frame; the support frame comprises a base 1 provided with a front wheel 11, a connecting rod 2 is connected to the base 1, a lower support frame 3 is further arranged on the base 1, the lower support frame 3 comprises a left lower support rod 31 and a right lower support rod 32 which are arranged on two sides of a vertical symmetry plane SP, the front end of the left lower support rod 31 is rotationally connected with the base 1 around a first axis A, the front end of the right lower support rod 32 is rotationally connected with the base 1 around a second axis B, a sliding piece 4 capable of sliding relative to the connecting rod 2 is further arranged on the connecting rod 2, an upper support frame 5 which can be close to the left lower support rod 31 and the right lower support rod 32 when the sliding piece 4 slides downwards relative to the connecting rod 2 is arranged between the sliding piece 4 and the lower support frame 3, the upper support frame 5 comprises a left upper support rod 51 and a right upper support rod 52 which are arranged on two sides of the vertical symmetry plane SP, the upper end of the left upper support rod 51 is rotationally connected with the sliding piece 4 around a third axis C, the lower end of the left upper support rod 51 or the rear end of the left lower support rod 31 is rotationally connected with a left rear wheel 511, the left lower support rod 31 is rotationally connected with the rear end of the left lower support rod 31 around the fourth axis B, the upper end of the left lower support rod 52 is rotationally connected with the right upper support rod 52, the right upper end of the left lower support rod 52 is rotationally connected with the right upper support rod 52, and the right upper end of the left lower support rod 52 is rotationally connected with the right upper support rod 52 is rotationally around the right upper end of the left upper support rod 52; the first axis a and the vertical symmetry plane SP are disposed at an acute angle, and the third axis C and the vertical symmetry plane SP are disposed at an acute angle, so that when the sliding member 4 slides down, the lower end of the upper left support rod 51 and the rear end of the lower left support rod 31 can move from a position far from the vertical symmetry plane SP to a position close to the vertical symmetry plane SP; the second axis B is disposed at an acute angle to the vertical symmetry plane SP, and the fourth axis D is disposed at an acute angle to the vertical symmetry plane SP, so that when the slider 4 slides down, the lower end of the upper right support rod 52 and the rear end of the lower right support rod 32 can move from a position away from the vertical symmetry plane SP to a position close to the vertical symmetry plane SP.
The lower end of the upper left supporting rod 51 is rotatably connected with the rear end of the lower left supporting rod 31 around a fifth axis E, and the upper left supporting rod is arranged at an acute angle with a vertical symmetry plane SP around the fifth axis E; the lower end of the upper right support rod 52 is rotatably connected to the rear end of the lower right support rod 32 about a sixth axis F, and the sixth axis F is disposed at an acute angle to the vertical symmetry plane SP.
The push rod assembly 7 is sleeved on the connecting rod 2 and can slide relative to the connecting rod 2, and when the push rod assembly 7 slides downwards relative to the connecting rod 2, the push rod assembly 7 pushes the sliding piece 4 to approach the base.
The infant pushchair further comprises a seat assembly 9 arranged between the push rod assembly 7 and the slide 4 and capable of being folded when the push rod assembly 7 slides relative to the connecting rod 2.
The push rod assembly 7 comprises a lower push rod 71 which is slidably sleeved on the connecting rod 2, and a shell 81 is sleeved on the lower push rod 71; the seat assembly 9 comprises a seat 91 and a backrest 92 which can be mutually rotated and folded, a transmission rod 93 which can be rotationally connected with the seat 91 and the sliding piece 4 is connected between the seat 91 and the sliding piece 4, the lower end of the transmission rod 93 is rotationally connected with the sliding piece 4 around a seventh axis G, the upper end of the transmission rod 93 is rotationally connected with the seat 91 around an eighth axis H, the rear side of the seat 91 is rotationally connected with the shell 81 around a ninth axis I, and the lower side of the backrest 92 is rotationally connected with the shell 81 around a tenth axis J.
An elastic piece 94 capable of resetting the backrest 92 is arranged between the shell 81 and the backrest 92;
The seat 91 is provided with a first abutment surface 911, and the backrest 92 is provided with a second abutment surface 921 which abuts against the first abutment surface 911 when the seat assembly 9 is in the unfolded state.
A folding rod assembly 53 is disposed between the upper left support rod 51 and the upper right support rod 52, the folding rod assembly 53 includes a first support rod 531 rotatably connected to the upper left support rod 51 and a second support rod 532 rotatably connected to the upper right support rod 52, and the first support rod 512 is rotatably connected to the second support rod 522.
The push rod assembly 7 comprises a lower push rod 71 slidably sleeved on the connecting rod 2, and the lower push rod 71 is provided with a locking device 8 which locks the lower push rod 71 on the connecting rod 2 and can drive the locking device 6 to unlock when the lower push rod 71 slides downwards relative to the connecting rod 2.
Compared with the prior art, the invention has the following advantages:
1. When the support frame is folded, the sliding part is pushed to slide downwards on the connecting rod, and when the sliding part slides downwards, the sliding part drives the upper ends of the left upper supporting rod and the right upper supporting rod to slide downwards, so that the sliding part is close to the base, the left upper supporting rod and the right upper supporting rod are close to the left lower supporting rod and the right lower supporting rod, the connecting rod rotates relative to the lower supporting rod to close, so that the support frame is reduced in the height direction, the first axis A and the third axis C are arranged at an acute angle with the vertical symmetry plane SP, the second axis B and the fourth axis D are arranged at an acute angle with the vertical symmetry plane SP, and therefore, when the sliding part slides downwards, the lower ends of the left upper supporting rod and the left lower supporting rod can move from a position far from the vertical symmetry plane SP to a position close to the vertical symmetry plane SP, and the rear ends of the right upper supporting rod can move from a position far from the vertical symmetry plane SP to a position close to the vertical symmetry plane SP, the folded support frame is reduced in the width direction, the folded support frame is more convenient to carry and the folded frame is realized, and the folded frame is more convenient to store.
2. The folding device is simple in structure, convenient for a user to fold and operate, small in size after folding and convenient for the user to carry.
[ Description of the drawings ]
FIG. 1 is one of the perspective views of the support frame of the present invention;
FIG. 2 is one of the plan views of the support frame of the present invention;
FIG. 3 is a second perspective view of the support frame of the present invention;
FIG. 4 is a second plan view of the support frame of the present invention;
FIG. 5 is one of the perspective views of the infant pushchair of the present invention;
FIG. 6 is a second perspective view of the infant pushchair of the present invention;
FIG. 7 is a perspective view of the seat assembly of the infant pushchair of the present invention when folded;
FIG. 8 is a plan view of the infant pushchair of the present invention partially collapsed;
FIG. 9 is one of the perspective views of the infant pushchair of the present invention in its fully collapsed position;
FIG. 10 is a second perspective view of the infant pushchair of the present invention in a fully collapsed position;
FIG. 11 is an exploded view of the infant stroller of the present invention;
FIG. 12 is a cross-sectional view of the infant pushchair of the present invention;
fig. 13 is an enlarged view of the region L in fig. 12;
FIG. 14 is one of the exploded views of the closure of the infant pushchair of the present invention;
FIG. 15 is a second exploded view of the closure device of the infant pushchair of the present invention;
fig. 16 is an enlarged view of the K region in fig. 12;
FIG. 17 is one of the exploded views of the locking device of the infant pushchair of the present invention;
figure 18 is a second exploded view of the locking device of the infant handcart of the present invention.
[ Detailed description ] of the invention
The invention is further described below with reference to the accompanying drawings:
Example 1: as shown in fig. 1 to 4, a first convenience of the present invention provides a support frame, which has a vertical symmetry plane SP and can move from an unfolded position to a folded position, and comprises a base 1, wherein a connecting rod 2 is connected to the base 1, a lower support 3 is further arranged on the base 1, the lower support 3 comprises a left lower support rod 31 and a right lower support rod 32 which are arranged at two sides of the vertical symmetry plane SP, the front end of the left lower support rod 31 is rotationally connected with the base 1 around a first axis a, the front end of the right lower support rod 32 is rotationally connected with the base 1 around a second axis B, a sliding piece 4 capable of sliding relative to the connecting rod 2 is further arranged on the connecting rod 2, an upper support 5 which can be drawn close to the left lower support rod 31 and the right lower support rod 32 when the sliding piece 4 slides downwards relative to the connecting rod 2 is arranged between the sliding piece 4 and the lower support frame 3, the upper support 5 comprises a left upper support rod 51 and a right upper support rod 52 which are arranged at two sides of the vertical symmetry plane SP, the upper end of the left upper support rod 51 is rotationally connected with the sliding piece 4 around a third axis C, the upper end of the left lower support rod 51 is rotationally connected with the sliding piece 4 around a left upper support rod 52, the upper end of the left lower support rod 52 is rotationally connected with the upper end of the left upper support rod 52 and the upper support rod 52 is rotationally connected with the upper end of the fourth support rod 52;
The first axis a and the vertical symmetry plane SP are disposed at an acute angle, and the third axis C and the vertical symmetry plane SP are disposed at an acute angle, so that when the sliding member 4 slides down, the lower end of the upper left support rod 51 and the rear end of the lower left support rod 31 can move from a position far from the vertical symmetry plane SP to a position close to the vertical symmetry plane SP; the second axis B is disposed at an acute angle to the vertical symmetry plane SP, and the fourth axis D is disposed at an acute angle to the vertical symmetry plane SP, so that when the slider 4 slides down, the lower end of the upper right support rod 52 and the rear end of the lower right support rod 32 can move from a position away from the vertical symmetry plane SP to a position close to the vertical symmetry plane SP. When the support frame is folded, the sliding piece 4 is pushed to slide downwards on the connecting rod 2, and when the sliding piece 4 slides downwards, the sliding piece 4 drives the upper ends of the left upper supporting rod 51 and the right upper supporting rod 52 to slide downwards, so that the sliding piece 4 is close to the base, the left upper supporting rod 51 and the right upper supporting rod 52 are close to the left lower supporting rod 31 and the right lower supporting rod 32, the connecting rod 2 rotates relatively to the lower supporting rod 3 to close, so that the support frame is reduced in the height direction, the first axis A and the third axis C are arranged at an acute angle with the vertical symmetry plane SP, the second axis B and the fourth axis D are arranged at an acute angle with the vertical symmetry plane SP, and therefore when the sliding piece 4 slides downwards, the lower ends of the left upper supporting rod 51 and the rear ends of the left lower supporting rod 31 can move from a position far away from the vertical symmetry plane SP to a position close to the vertical symmetry plane SP, and simultaneously the lower ends of the right upper supporting rod 52 and the right lower supporting rod 32 can move from a position far away from the vertical symmetry plane SP, so that the support frame can be reduced in the width direction, the folded support frame is folded, the volume of the folded support frame can be reduced, the folded support frame can be carried more conveniently, and the folded 4 can be folded conveniently.
The support frame not only can be used for a baby carrier, but also can be used for carrying tools such as pet cars and the like, is used for carrying articles, and has wider applicability.
As shown in fig. 1 to 4, the lower end of the upper left support rod 51 is rotatably connected to the rear end of the lower left support rod 31 about a fifth axis E, and is disposed at an acute angle to the vertical symmetry plane SP about the fifth axis E; the lower end of the upper right support rod 52 is rotatably connected to the rear end of the lower right support rod 32 about a sixth axis F, and the sixth axis F is disposed at an acute angle to the vertical symmetry plane SP. The lower end of the upper left supporting rod 51 and the rear end of the lower left supporting rod 31 can be connected through a universal joint, so that the lower end of the upper left supporting rod 51 and the rear end of the lower left supporting rod 31 can conveniently rotate to move from a position far from a vertical symmetry plane SP to a position close to the vertical symmetry plane SP; the lower end of the upper right support rod 52 and the rear end of the lower right support rod 32 can be connected through a universal joint, so that the lower end of the upper right support rod 52 and the rear end of the lower right support rod 32 can be conveniently rotated to move from a position far from the vertical symmetry plane SP to a position close to the vertical symmetry plane SP.
Example 2: as shown in fig. 5 to 18, a second aspect of the present invention provides an infant pushchair having a vertical plane of symmetry SP and being movable from an unfolded position to a folded position after unlocking the locking means 6, comprising a support frame and a push rod assembly 7 connected to the support frame;
The support frame comprises a base 1 provided with a front wheel 11, a connecting rod 2 is connected to the base 1, a lower support frame 3 is further arranged on the base 1, the lower support frame 3 comprises a left lower support rod 31 and a right lower support rod 32 which are arranged on two sides of a vertical symmetry plane SP, the front end of the left lower support rod 31 is rotationally connected with the base 1 around a first axis A, the front end of the right lower support rod 32 is rotationally connected with the base 1 around a second axis B, a sliding piece 4 capable of sliding relative to the connecting rod 2 is further arranged on the connecting rod 2, an upper support frame 5 which can be close to the left lower support rod 31 and the right lower support rod 32 when the sliding piece 4 slides downwards relative to the connecting rod 2 is arranged between the sliding piece 4 and the lower support frame 3, the upper support frame 5 comprises a left upper support rod 51 and a right upper support rod 52 which are arranged on two sides of the vertical symmetry plane SP, the upper end of the left upper support rod 51 is rotationally connected with the sliding piece 4 around a third axis C, the lower end of the left upper support rod 51 or the rear end of the left lower support rod 31 is rotationally connected with a left rear wheel 511, the left lower support rod 31 is rotationally connected with the rear end of the left lower support rod 31 around the fourth axis B, the upper end of the left lower support rod 52 is rotationally connected with the right upper support rod 52, the right upper end of the left lower support rod 52 is rotationally connected with the right upper support rod 52, and the right upper end of the left lower support rod 52 is rotationally connected with the right upper support rod 52 is rotationally around the right upper end of the left upper support rod 52;
The first axis a and the vertical symmetry plane SP are disposed at an acute angle, and the third axis C and the vertical symmetry plane SP are disposed at an acute angle, so that when the sliding member 4 slides down, the lower end of the upper left support rod 51 and the rear end of the lower left support rod 31 can move from a position far from the vertical symmetry plane SP to a position close to the vertical symmetry plane SP; the second axis B is disposed at an acute angle to the vertical symmetry plane SP, and the fourth axis D is disposed at an acute angle to the vertical symmetry plane SP, so that when the slider 4 slides down, the lower end of the upper right support rod 52 and the rear end of the lower right support rod 32 can move from a position away from the vertical symmetry plane SP to a position close to the vertical symmetry plane SP.
When the infant handcart is folded, the sliding part 4 is pushed to slide downwards on the connecting rod 2, and when the sliding part 4 slides downwards, the sliding part 4 drives the upper ends of the left upper supporting rod 51 and the right upper supporting rod 52 to slide downwards, so that the sliding part 4 is close to the base, the left upper supporting rod 51 and the right upper supporting rod 52 are close to the left lower supporting rod 31 and the right lower supporting rod 32, the connecting rod 2 rotates relatively to the lower supporting rod 3, so that the supporting frame is reduced in the height direction, the first axis A and the third axis C are arranged at an acute angle with the vertical symmetrical plane SP, the second axis B and the fourth axis D are arranged at an acute angle with the vertical symmetrical plane SP, and therefore, when the sliding part 4 slides downwards, the lower ends of the left upper supporting rod 51 and the rear ends of the left lower supporting rod 31 can move from a position far away from the vertical symmetrical plane SP to a position near the vertical symmetrical plane SP, and the lower ends of the right upper supporting rod 52 can move from a position far away from the vertical symmetrical plane SP, so that the supporting frame is reduced in the width direction, the folded size of the folded handcart is reduced, and the folded infant handcart can be conveniently carried, and the infant handcart can be folded conveniently.
As shown in fig. 5 to 18, the lower end of the upper left support rod 51 is rotatably connected to the rear end of the lower left support rod 31 about a fifth axis E, and is disposed at an acute angle to the vertical symmetry plane SP about the fifth axis E; the lower end of the upper right support rod 52 is rotatably connected to the rear end of the lower right support rod 32 about a sixth axis F, and the sixth axis F is disposed at an acute angle to the vertical symmetry plane SP. Of course, the lower end of the upper left support rod 51 and the rear end of the lower left support rod 31 can be connected through a universal joint, so that the lower end of the upper left support rod 51 and the rear end of the lower left support rod 31 can conveniently rotate to move from a position far from the vertical symmetry plane SP to a position close to the vertical symmetry plane SP; the lower end of the upper right support rod 52 and the rear end of the lower right support rod 32 can be connected through a universal joint, so that the lower end of the upper right support rod 52 and the rear end of the lower right support rod 32 can be conveniently rotated to move from a position far from the vertical symmetry plane SP to a position close to the vertical symmetry plane SP.
As shown in fig. 5 to 8, the push rod assembly 7 is sleeved on the connecting rod 2 and can slide relative to the connecting rod 2, and when the push rod assembly 7 slides downwards relative to the connecting rod 2, the push rod assembly 7 pushes the sliding piece 4 to approach the base. The push rod assembly 7 is used for pushing the sliding piece 4 to slide, so that the infant handcart is more convenient to fold.
As shown in fig. 5 to 8, the infant handcart further comprises a seat assembly 9 which is arranged between the push rod assembly 7 and the sliding piece 4 and can be folded when the push rod assembly 7 slides relative to the connecting rod 2.
As shown in fig. 11, the push rod assembly 7 includes a lower push rod 71 slidably sleeved on the connecting rod 2, and a housing 81 is further sleeved on the lower push rod 71; the seat assembly 9 comprises a seat 91 and a backrest 92 which can be mutually rotated and folded, a transmission rod 93 which can be rotationally connected with the seat 91 and the sliding piece 4 is connected between the seat 91 and the sliding piece 4, the lower end of the transmission rod 93 is rotationally connected with the sliding piece 4 around a seventh axis G, the upper end of the transmission rod 93 is rotationally connected with the seat 91 around an eighth axis H, the rear side of the seat 91 is rotationally connected with the shell 81 around a ninth axis I, and the lower side of the backrest 92 is rotationally connected with the shell 81 around a tenth axis J. When the infant handcart is folded, the housing 81 slides downward relative to the connecting rod 2 following the push down rod 71, at this time, the distance between the slider 4 and the housing 81 gradually decreases so that the rear side of the seat 91 rotates about the ninth axis I, and when the rear side of the seat 91 rotates about the ninth axis I, the front side of the seat 91 rotates about the eighth axis H relative to the transmission rod 93 so that the seat 91 approaches the backrest 92, and the lower end of the transmission rod 93 rotates about the seventh axis G relative to the slider 4 so as to approach the seat 91, the seat 91 abuts against the backrest 92 to push the backrest 92 backward so that the backrest 92 rotates about the tenth axis J toward the housing 81, folding of the entire seat assembly 9 is completed, and the folded volume of the seat assembly 9 is minimized.
As shown in fig. 11, an elastic member 94 capable of resetting the backrest 92 is provided between the housing 81 and the backrest 92; the seat 91 is provided with a first abutment surface 911, and the backrest 92 is provided with a second abutment surface 921 which abuts against the first abutment surface 911 when the seat assembly 9 is in the unfolded state. When the seat assembly 9 is in the unfolded state, the first abutting surface 911 and the second abutting surface 921 abut against each other, so that the seat 91 and the backrest 92 are fixed to each other. The elastic member 94 is a torsion spring. When the seat assembly 9 is unfolded, the elastic member 94 drives the backrest 92 to be unfolded until the first abutting surface 911 on the seat 91 and the second abutting surface 921 on the backrest 92 abut against each other, so that there is no fit gap when the backrest 92 and the seat 91 are unfolded from each other, and the seat 91 and the backrest 92 are fixed to each other more stably.
As shown in fig. 5, a folding bar assembly 53 is disposed between the upper left support bar 51 and the upper right support bar 52, the folding bar assembly 53 includes a first support bar 531 rotatably connected to the upper left support bar 51 and a second support bar 532 rotatably connected to the upper right support bar 52, and the first support bar 531 is rotatably connected to the second support bar 532. The first support bar 531 and the second support bar 532 are used to support the upper left support bar 51 and the upper right support bar 52 when the infant handcart is unfolded, so that the upper left support bar 51 and the upper right support bar 52 are more stable when unfolded.
As shown in fig. 5 to 18, the push rod assembly 7 includes a lower push rod 71 slidably sleeved on the connecting rod 2, and a locking device 8 capable of locking the lower push rod 71 on the connecting rod 2 and driving the locking device 6 to unlock when the lower push rod 71 slides down relative to the connecting rod 2 is arranged on the lower push rod 71. The locking device 8 and the locking device 6 are linked and unlocked, unlocking is more convenient, and the locking device is convenient to operate only by pushing the push rod 71.
As shown in fig. 12 to 15, the connecting rod 2 is provided with a first locking hole 22, the push rod 71 is provided with a second locking hole 711, the locking device 8 includes a housing 81 sleeved on the push rod 71, the housing 81 is provided with a rotating knob 82 capable of rotating relative to the housing, the rotating knob 82 is connected with a lock tongue 83 capable of being clamped with the first locking hole 22 and the second locking hole 711 and capable of being separated from the first locking hole 22 after the rotating knob 82 is pressed, and an elastic reset element 84 capable of resetting the rotating knob 82 is further arranged between the rotating knob 82 and the housing 81. The resilient return element 84 is a torsion spring.
When the baby carriage needs to be folded, the rotating button 82 is pressed, the rotating button 82 rotates relative to the shell 81, so that the lock tongue 83 is separated from the first locking hole 22, the lower push rod 71 can be pushed to slide downwards relative to the connecting rod 2 at the moment, the locking device 6 is driven to unlock, the locking device 8 and the locking device 6 are unlocked in a linkage unlocking mode, and the unlocking is convenient and the unlocking operation is smooth. When the stroller needs to be unfolded, the push-down rod 71 is pushed to slide upwards relative to the connecting rod 2 so that the second locking hole 711 is aligned with the first locking hole 22, and when the second locking hole 711 is aligned with the first locking hole 22, the elastic reset element 84 drives the lock tongue 83 to reset, so that the lock tongue 83 is inserted into the first locking hole 22, and the connecting rod 2 is fixed with the push-down rod 71.
As shown in fig. 12 and fig. 16 to 18, the connecting rod 2 is provided with a first locking hole 23, the sliding member 4 is provided with a second locking hole 41, the locking device 6 comprises a housing 61 connected to the sliding member 4, a latch 62 capable of being engaged with the first locking hole 23 and the second locking hole 41 and being disengaged from the first locking hole 23 when sliding relative to the housing 61 is provided in the housing 61, an operating member 63 for pushing the latch 62 to slide the latch 62 when sliding is provided on the housing 61, a reset member 64 capable of resetting the latch 62 is provided between the latch 62 and the housing 61, and a pushing portion 811 capable of pushing the operating member 63 to slide when sliding relative to the connecting rod 2 is provided on the housing 81.
As shown in fig. 17 to 18, the latch 62 is provided with a first inclined surface 621, and the operating member 63 is provided with a second inclined surface 631 capable of pushing the latch 62 in cooperation with the first inclined surface 621 when the operating member 63 slides. When the baby carriage is folded, the shell 81 slides along the push rod 71 relative to the connecting rod 2, the pressing part 811 presses the operating member 63 in a pressing manner when sliding, so that the operating member 63 slides downwards relative to the shell 61, the second inclined surface 631 on the operating member 63 cooperates with the first inclined surface 621 to push the plug pin 62, the plug pin 62 is separated from the first locking hole 23, so that the sliding member 4 can slide relative to the connecting rod 2, and the upper left support rod 51 and the upper right support rod 52 are driven to be close to the lower left support rod 31 and the lower right support rod 32. The return member 64 is a spring. When the stroller is unfolded, the sliding member 4 is slid upward so that the second locking hole 41 is aligned with the first locking hole 23, and when the second locking hole 41 is aligned with the first locking hole 23, the latch 62 is slid relative to the housing 61 by the pushing of the reset member 64 and inserted into the first locking hole 23, so that the sliding member 4 is fixed on the connecting rod 2, and the operating member 63 is slid upward to reset by the pushing of the latch 62.
As shown in fig. 12 to 13, a positioning sleeve 21 is further disposed between the push down rod 71 and the connecting rod 2, the upper end of the positioning sleeve 21 is fixed on the connecting rod 2, and the positioning sleeve 21 is further provided with a positioning hole 211 through which the lock tongue 83 can pass. The lock tongue 83 sequentially passes through the second locking hole 711, the positioning hole 211 and the first locking hole 22 from right to left, and the positioning sleeve 21 enables the push rod 71 to be more stable when being clamped with the lock tongue 83 with the connecting rod 2.
As shown in fig. 5 to 12, the push rod assembly 7 further includes a push rod 72 rotatably connected to the push rod 71. The locking device is further arranged between the lower push rod 71 and the push rod 72, so that the push rod 72 can be fixed relative to the lower push rod 71 when the infant handcart is folded, and the locking device is unlocked when the infant handcart is folded, so that the push rod 72 can rotate relative to the lower push rod 71 and close to the push rod 71, and the folding volume is reduced.
Claims (3)
1. Infant pushchair having a vertical Symmetry Plane (SP) and being movable from an unfolded position to a folded position after unlocking the locking means (6), characterized in that: comprises a supporting frame and a push rod assembly (7) connected to the supporting frame;
The support frame comprises a base (1) provided with a front wheel (11), a connecting rod (2) is connected to the base (1), a lower support frame (3) is further arranged on the base (1), the lower support frame (3) comprises a left lower support rod (31) and a right lower support rod (32) which are arranged on two sides of a vertical Symmetry Plane (SP), the front end of the left lower support rod (31) is rotationally connected with the base (1) around a first axis (A), the front end of the right lower support rod (32) is rotationally connected with the base (1) around a second axis (B), a sliding piece (4) capable of sliding relative to the connecting rod is further arranged on the connecting rod (2), an upper support frame (5) which can be close to the left lower support rod (31) and the right lower support rod (32) when the sliding piece (4) slides downwards is arranged between the sliding piece (4), the upper support frame (5) comprises a left upper support rod (51) and a right upper support rod (52) which are arranged on two sides of the vertical Symmetry Plane (SP), the left upper support rod (51) is rotationally connected with the left lower support rod (51) around the third axis (511), the rear end of the left lower supporting rod (31) is rotationally connected to the left upper supporting rod (51), the upper end of the right upper supporting rod (52) is rotationally connected with the sliding piece (4) around the fourth axis (D), the lower end of the right upper supporting rod (52) or the rear end of the right lower supporting rod (32) is connected with a right rear wheel (521), and the rear end of the right lower supporting rod (32) is rotationally connected to the right upper supporting rod (52);
The first axis (A) and the vertical Symmetry Plane (SP) are arranged at an acute angle, the third axis (C) and the vertical Symmetry Plane (SP) are arranged at an acute angle, and when the sliding piece (4) slides downwards, the lower end of the left upper supporting rod (51) and the rear end of the left lower supporting rod (31) can move from a position far away from the vertical Symmetry Plane (SP) to a position close to the vertical Symmetry Plane (SP);
The second axis (B) and the vertical Symmetry Plane (SP) are arranged at an acute angle, the fourth axis (D) and the vertical Symmetry Plane (SP) are arranged at an acute angle, and when the sliding piece (4) slides downwards, the lower end of the right upper supporting rod (52) and the rear end of the right lower supporting rod (32) can move from a position far away from the vertical Symmetry Plane (SP) to a position close to the vertical Symmetry Plane (SP);
The lower end of the upper left supporting rod (51) is rotationally connected with the rear end of the lower left supporting rod (31) around a fifth axis (E), and the upper left supporting rod is arranged at an acute angle with a vertical Symmetry Plane (SP) around the fifth axis (E);
the lower end of the upper right supporting rod (52) is rotationally connected with the rear end of the lower right supporting rod (32) around a sixth axis (F), and the sixth axis (F) and a vertical Symmetry Plane (SP) are arranged at an acute angle;
The infant handcart further comprises a seat assembly (9) which is arranged between the push rod assembly (7) and the sliding piece (4) and can be folded when the push rod assembly (7) slides relative to the connecting rod (2); the push rod assembly (7) comprises a lower push rod (71) which is sleeved on the connecting rod (2) in a sliding manner, and a shell (81) is sleeved on the lower push rod (71);
The seat assembly (9) comprises a seat (91) and a backrest (92) which can be mutually rotated and folded, a transmission rod (93) which can be rotationally connected with the seat (91) and the sliding piece (4) is connected between the seat and the sliding piece, the lower end of the transmission rod (93) is rotationally connected with the sliding piece (4) around a seventh axis (G), the upper end of the transmission rod (93) is rotationally connected with the seat (91) around an eighth axis (H), the rear side of the seat (91) is rotationally connected with the shell (81) around a ninth axis (I), and the lower side of the backrest (92) is rotationally connected with the shell (81) around a tenth axis (J);
An elastic piece (94) capable of resetting the backrest (92) is arranged between the shell (81) and the backrest (92); the locking device further comprises a locking device, a connecting rod is provided with a first locking hole, the lower push rod is provided with a second locking hole, the locking device comprises a shell sleeved on the lower push rod, a rotating button capable of rotating relative to the shell is arranged on the shell, and the rotating button is connected with a lock tongue which can be clamped with the first locking hole and the second locking hole and can be separated from the first locking hole after being pressed;
The seat (91) is provided with a first propping surface (911), and the backrest (92) is provided with a second propping surface (921) propping against the first propping surface (911) when the seat assembly (9) is in a unfolded state; the folding rod assembly (53) is arranged between the left upper supporting rod (51) and the right upper supporting rod (52), the folding rod assembly (53) comprises a first supporting rod (531) rotatably connected to the left upper supporting rod (51) and a second supporting rod (532) rotatably connected to the right upper supporting rod (52), and the first supporting rod is rotatably connected with the second supporting rod.
2. The infant handcart according to claim 1, wherein: the push rod assembly (7) comprises a lower push rod (71) which is slidably sleeved on the connecting rod (2), and a locking device (8) which locks the lower push rod (71) on the connecting rod (2) and can drive the locking device (6) to unlock when the lower push rod (71) slides downwards relative to the connecting rod (2) is arranged on the lower push rod (71).
3. The infant handcart according to claim 1, wherein: the push rod assembly (7) is sleeved on the connecting rod (2) and can slide relative to the connecting rod (2), and when the connecting rod (2) slides downwards, the push rod assembly (7) pushes the sliding piece (4) to close to the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011067246.2A CN112061219B (en) | 2020-10-05 | 2020-10-05 | Support frame and infant handcart using same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011067246.2A CN112061219B (en) | 2020-10-05 | 2020-10-05 | Support frame and infant handcart using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112061219A CN112061219A (en) | 2020-12-11 |
| CN112061219B true CN112061219B (en) | 2024-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011067246.2A Active CN112061219B (en) | 2020-10-05 | 2020-10-05 | Support frame and infant handcart using same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN212890544U (en) * | 2020-10-05 | 2021-04-06 | 顾总照 | Support frame and infant handcart using same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106314516B (en) * | 2016-09-23 | 2018-07-27 | 中山市宝蓓悠日用制品有限公司 | Baby-carrier framework |
| CN106515829B (en) * | 2016-12-14 | 2020-09-01 | 好孩子儿童用品有限公司 | Children's barrow |
| CN206954294U (en) * | 2017-06-15 | 2018-02-02 | 李培 | Infant handcart |
| CN111301576A (en) * | 2020-03-30 | 2020-06-19 | 中山市宝隆婴童用品有限公司 | Three-wheeled baby carriage |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212890544U (en) * | 2020-10-05 | 2021-04-06 | 顾总照 | Support frame and infant handcart using same |
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| CN112061219A (en) | 2020-12-11 |
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