CN106985891B - Child cart - Google Patents
Child cart Download PDFInfo
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- CN106985891B CN106985891B CN201710217739.1A CN201710217739A CN106985891B CN 106985891 B CN106985891 B CN 106985891B CN 201710217739 A CN201710217739 A CN 201710217739A CN 106985891 B CN106985891 B CN 106985891B
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- China
- Prior art keywords
- push rod
- wheel support
- front wheel
- rear wheel
- piece
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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
- B62B7/08—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable in the direction of, or at right angles to, the wheel axis
- B62B7/083—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable in the direction of, or at right angles to, the wheel axis the wheel axes being moved from each other during folding
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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
- B62B7/08—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable in the direction of, or at right angles to, the wheel axis
- B62B7/086—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable in the direction of, or at right angles to, the wheel axis becoming smaller in all three dimensions
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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
- B62B2205/00—Hand-propelled vehicles or sledges being foldable or dismountable when not in use
- B62B2205/02—Hand-propelled vehicles or sledges being foldable or dismountable when not in use foldable widthwise
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Handcart (AREA)
- Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)
Abstract
The invention relates to a child stroller. A stroller, the frame of which comprises: the device comprises a front wheel bracket, a lower rear wheel bracket, a sliding piece, an upper rear wheel bracket, a push rod assembly, a seat rod, a connecting rod, a first return piece, a second return piece and a locking device. The upper rear wheel support is in pivot connection with the front wheel support, the upper rear wheel support is in sliding connection with the lower rear wheel support, the push rod assembly is in sliding connection with the front wheel support, the sliding piece is in sliding connection with the front wheel support, and the seat rod is respectively in pivot connection with the sliding piece and the upper rear wheel support. The connecting rod is respectively connected with the seat rod and the lower rear wheel bracket in a pivot way. The first restoring piece is used for providing restoring force to drive the push rod assembly to slide upwards; the second restoring piece is used for providing restoring force to drive the upper rear wheel bracket to slide upwards. The locking device is used for locking the frame in the unfolded state and the folded state. The invention can realize the automatic unfolding and semiautomatic folding of the child stroller, so that the child stroller is simpler and more convenient to unfold and fold.
Description
Technical Field
The invention relates to a child stroller.
Background
At present, most of the child strollers, child strollers and the like used in the market are foldable structures, namely, are unfolded for children to sit when not used, and are folded when not used so as to be convenient to store or transport. However, the existing child strollers are various in structure and various in variety, but most of the child strollers can only be unfolded and folded manually in multiple steps, the operation process is complicated, some of the child strollers are heavy, and the child strollers are not easy to be unfolded and folded.
Disclosure of Invention
The invention aims to provide a child cart which is simple and convenient to unfold and fold.
In order to solve the technical problems, the invention adopts a technical scheme that: a stroller includes a frame having an expanded state and a collapsed state, a front wheel disposed at a front portion below the frame, and a rear wheel disposed at a rear portion below the frame. The frame comprises:
the lower part of the front wheel bracket is connected with the front wheel;
the lower part of the lower rear wheel bracket is connected with the rear wheel;
the upper rear wheel support is connected with the front wheel support in a pivot way, the lower part of the upper rear wheel support is connected with the lower rear wheel support in a sliding way, and the upper rear wheel support can slide up and down along the extending direction of the lower rear wheel support;
the push rod assembly is in sliding connection with the front wheel bracket and can slide up and down along the extending direction of the front wheel bracket;
the sliding piece is connected with the front wheel bracket in a sliding way and can slide up and down along the extending direction of the front wheel bracket;
a seat bar, the front portion of the seat bar being pivotally connected to the slider, the rear portion of the seat bar being pivotally connected to the upper rear wheel bracket;
the upper part of the connecting rod is pivotally connected with the seat rod, and the lower part of the connecting rod is pivotally connected with the lower rear wheel bracket;
the first restoring piece is respectively connected with the front wheel bracket and the push rod assembly and is used for providing restoring force to drive the push rod assembly to slide upwards along the front wheel bracket;
the second restoring piece is respectively connected with the upper rear wheel bracket and the lower rear wheel bracket and is used for providing restoring force to drive the upper rear wheel bracket to slide upwards along the lower rear wheel bracket;
locking means for locking the frame in the unfolded state and in the folded state,
when the frame is in an unfolding state, the first restoring piece is in an unfolding state, and the second restoring piece is in a shrinking state; when the frame is in a folded state, the first restoring piece is in a contracted state, and the second restoring piece is in an expanded state; when the frame in the unfolded state is unlocked, the second return piece can provide a return force to drive the upper rear wheel support to ascend, and the seat rod, the connecting rod and the sliding piece drive the upper rear wheel support and the lower rear wheel support to approach the front wheel support; when the frame is unfolded, the push rod assembly and the sliding piece are locked with each other, the first return piece can provide a restoring force to drive the push rod assembly to ascend, the push rod assembly can drive the sliding piece to ascend synchronously, the sliding piece, the seat rod and the connecting rod drive the upper rear wheel support and the lower rear wheel support to unfold backwards, and the upper rear wheel support slides downwards to shrink.
Specifically, when the frame is in a unfolding state, the front wheel support and the lower rear wheel support are unfolded relatively in tandem, the push rod assembly slides upwards to be unfolded relatively to the front wheel support, the locking device locks the push rod assembly and the sliding piece on the front wheel support, the upper rear wheel support presses the second restoring piece against the lower rear wheel support to enable the second restoring piece to be in a compression state, the seat rod is unfolded between the front wheel support and the upper rear wheel support along the front-rear direction, and the connecting rod is unfolded between the seat rod and the lower rear wheel support; when the frame is in a folding state, the front wheel support and the lower rear wheel support are relatively close, the push rod assembly slides downwards to be contracted relative to the front wheel support, the locking device locks the push rod assembly and the sliding piece with each other and locks the push rod assembly and the front wheel support with each other, the push rod assembly presses the first return piece against the front wheel support to enable the first return piece to be in a contracted state, the upper rear wheel support slides upwards to be stretched relative to the lower rear wheel support, and the seat rod and the connecting rod are folded among the front wheel support, the upper rear wheel support and the lower rear wheel support; when the frame in the unfolded state is unlocked, two of the front wheel bracket, the push rod assembly and the sliding piece are unlocked, and the push rod assembly and the sliding piece can slide on the front wheel bracket respectively; when the frame in the folded state is unlocked, the front wheel bracket is unlocked from each other with the push rod assembly and the slider, respectively, which remain locked to each other.
Preferably, the push rod assembly comprises an upper push rod and a lower push rod, the lower push rod is in sliding connection with the front wheel bracket, and the lower push rod can slide up and down along the extending direction of the front wheel bracket; the upper push rod is connected with the lower push rod in a sliding way, and the upper push rod can slide up and down along the extending direction of the lower push rod.
Specifically, the lower push rod is a pipe fitting, the upper push rod is inserted into the lower push rod and can slide up and down, and when the frame is in a unfolding state, the upper push rod slides upwards to extend out of the lower push rod; when the frame is in a folded state, the upper push rod slides downwards to retract inwards towards the lower push rod.
Specifically, the frame still includes the sliding sleeve subassembly, the sliding sleeve subassembly is including fixed last sliding sleeve that sets up on the front wheel support and fixed lower sliding sleeve that sets up on the push rod down, push rod cover is established in last sliding sleeve down, front wheel support cover is established in lower sliding sleeve, the push rod can slide from top to bottom relative front wheel support under the direction effect of last sliding sleeve and lower sliding sleeve down.
Specifically, the locking device comprises a locking piece arranged at the lower part of the lower push rod, when the frame is in a unfolding state, the locking piece can lock the front wheel bracket, the lower push rod and the sliding piece with each other, and pushing the upper push rod to slide downwards can trigger the locking piece to unlock so as to unlock the front wheel bracket, the lower push rod and the sliding piece with each other; the locking member is capable of locking the push down rod and the slider to each other when the frame is in the folded state.
Specifically, locking device is including setting up the pot head on push rod upper portion and corresponding folding couple that sets up on front wheel support upper portion, when the frame was in the folded condition, the push rod down slides until the pot head reaches folding couple department, folding couple can hang the pot head and then lock down push rod and front wheel support each other.
Preferably, the sliding piece is of a sliding sleeve structure, and the sliding piece is sleeved on the front wheel support and is positioned below the upper sliding sleeve and the lower sliding sleeve.
Preferably, the first return member and the second return member are air compression springs or compression springs.
Specifically, the front wheel support and the lower rear wheel support are both pipe fittings, the first restoring piece is arranged inside the front wheel support, the upper part of the first restoring piece is connected with the push rod assembly, and the lower part of the first restoring piece is propped against the inner lower part of the front wheel support; the second return piece is arranged in the lower rear wheel bracket, the upper part of the second return piece is propped against the lower part of the upper rear wheel bracket, and the lower part of the second return piece is propped against the inner lower part of the lower rear wheel bracket.
The terms of the directions, such as front, back, left, right, up, down, and the like, referred to above are defined as directions during normal use of the stroller.
The scope of the present invention is not limited to the specific combination of the above technical features, but also covers other technical features formed by any combination of the above technical features or their equivalents. Such as those described above, and those having similar functions disclosed in the present application.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the first restoring piece is used for providing restoring force for frame expansion, the second restoring piece is used for providing restoring force for frame folding, and the automatic expansion and semiautomatic folding of the stroller can be realized through the linkage of the sliding piece, the seat rod, the connecting rod, the front wheel support, the upper rear wheel support and the lower rear wheel support.
Drawings
FIG. 1 is a front view of a child stroller according to the present invention in an expanded state;
FIG. 2 is a left side view of the child stroller of the present invention in an expanded state;
FIG. 3 is an exploded view of the child stroller of the present invention;
FIG. 4 is a front view of the child stroller with the push-up lever retracted to trigger unlocking of the unlocking member;
FIG. 5 is a front view of the child stroller of the present invention in a semi-collapsed condition;
FIG. 6 is a front view of the child stroller of the present invention in a collapsed condition;
wherein: 1. a front wheel bracket; 2. a lower rear wheel bracket; 3. an upper rear wheel bracket; 4. a push rod assembly; 5. a slider; 6. a seat rod; 7. a connecting rod; 8. a first return; 9. a second return piece; 10. a sliding sleeve assembly; 11. a sliding sleeve is arranged on the upper part; 12. a lower sliding sleeve; 13. a locking member; 14. an end sleeve; 15. folding the hook; 41. an upper push rod; 42. a push rod is downwards pushed; 100. a frame; 101. a front wheel; 102. a rear wheel; 201. a first shaft; 202. a second shaft; 203. a third shaft; 204. a fourth shaft; 205. and a fifth axis.
Detailed Description
As shown in fig. 1 to 6, a stroller according to the present invention includes a frame 100 having an unfolded state and a folded state, a front wheel 101 disposed at a lower front portion of the frame 100, and a rear wheel 102 disposed at a lower rear portion of the frame 100.
The frame 100 includes:
a front wheel bracket 1, the lower part of the front wheel bracket 1 being connected with a front wheel 101;
a lower rear wheel bracket 2, wherein the lower part of the lower rear wheel bracket 2 is connected with a rear wheel 102, and the lower rear wheel bracket 2 is a pipe fitting;
an upper rear wheel bracket 3, wherein the upper part of the upper rear wheel bracket 3 is pivotally connected with the front wheel bracket 1 through a first shaft 201, the lower part of the upper rear wheel bracket 3 is inserted into the lower rear wheel bracket 2 and is slidably connected with the lower rear wheel bracket 2, and the upper rear wheel bracket 3 can slide up and down along the extending direction of the lower rear wheel bracket 2;
the push rod assembly 4 comprises an upper push rod 41 and a lower push rod 42, the lower push rod 42 is in sliding connection with the front wheel bracket 1, and the lower push rod 42 can slide up and down along the extending direction of the front wheel bracket 1; the upper push rod 41 is slidably connected with the lower push rod 42, and the upper push rod 41 can slide up and down along the extending direction of the lower push rod 42;
a slider 5, the slider 5 being slidably connected to the front wheel bracket 1, the slider 5 being capable of sliding up and down along the extending direction of the front wheel bracket 1;
a seat bar 6, the front part of the seat bar 6 is pivotally connected with the sliding piece 5 through a second shaft 202, and the rear part of the seat bar 6 is pivotally connected with the upper rear wheel bracket 3 through a third shaft 203;
a link 7, an upper portion of the link 7 is pivotally connected to the seat bar 6 through a fourth shaft 204, and a lower portion of the link 7 is pivotally connected to the lower rear wheel bracket 2 through a fifth shaft 205;
a first return member 8, wherein the first return member 8 is respectively connected with the front wheel bracket 1 and the push rod assembly 4, and the first return member 8 is used for providing a restoring force to drive the push rod assembly 4 to slide upwards along the front wheel bracket 1;
a second return member 9, the second return member 9 being respectively connected to the upper rear wheel bracket 3 and the lower rear wheel bracket 2, the second return member 9 being configured to provide a restoring force to drive the upper rear wheel bracket 3 to slide upward along the lower rear wheel bracket 2;
locking means for locking the frame 100 in the unfolded state and the folded state.
The lower push rod 42 is a pipe member, and the upper push rod 41 is inserted into the lower push rod 42 and can slide up and down in the upper push rod 41. The frame 100 further comprises a sliding sleeve assembly 10, wherein the sliding sleeve assembly 10 comprises an upper sliding sleeve 11 fixedly arranged on the front wheel bracket 1 and a lower sliding sleeve 12 fixedly arranged on the lower push rod 42. The lower push rod 42 is sleeved in the upper sliding sleeve 11, the front wheel bracket 1 is sleeved in the lower sliding sleeve 12, and the lower push rod 42 can slide up and down relative to the front wheel bracket 1 under the guiding action of the upper sliding sleeve 11 and the lower sliding sleeve 12.
The locking device comprises a locking piece 13 arranged at the lower part of the lower push rod 42, an end sleeve 14 arranged at the upper part of the lower push rod 42 and a folding hook 15 correspondingly arranged at the upper part of the front wheel bracket 1. The locking member 13 is capable of locking the front wheel bracket 1, the push down rod 42, and the slider 5 to each other.
The first return member 8 and the second return member 9 are air compression springs or compression springs. In this embodiment, the first return member 8 is an air compression spring, and the second return member 9 is a compression spring. The first return member 8 is installed inside the front wheel bracket 1, the upper portion of the first return member 8 is connected with the lower push rod 42, and the lower portion of the first return member abuts against the inner lower portion of the front wheel bracket 1. The second return piece 9 is arranged in the lower rear wheel bracket 2, the upper part of the second return piece 9 is in propping connection with the lower part of the upper rear wheel bracket 3, and the lower part of the second return piece 9 is in propping connection with the inner lower part of the lower rear wheel bracket 2.
The sliding piece 5 is of a sliding sleeve structure, and the sliding piece 5 is sleeved on the front wheel bracket 1 and is positioned below the upper sliding sleeve 11 and the lower sliding sleeve 12.
As shown in fig. 1, when the frame 100 is in the unfolded state, the front wheel bracket 1 and the lower rear wheel bracket 2 are unfolded in tandem. The lower push rod 42 is slid upward to be extended relative to the front wheel bracket 1, and the upper push rod 41 is also slid upward to be extended relative to the lower push rod 42. The locking member 13 simultaneously locks the push down rod 42 and the slider 5 to the front wheel bracket 1. The first restoring member 8 is in an open state, and the upper rear wheel bracket 3 presses the second restoring member 9 against the lower rear wheel bracket 2 so that the second restoring member 9 is in a compressed state. The seat post 6 is extended between the front wheel bracket 1 and the upper rear wheel bracket 3 in the front-rear direction, and the link 7 is extended between the seat post 6 and the lower rear wheel bracket 2.
As shown in fig. 6, when the frame 100 is in a folded state, the front wheel bracket 1 and the lower rear wheel bracket 2 are relatively close together. The upper push rod 41 slides downwards to retract into the lower push rod 42, the lower push rod 42 slides downwards until the end sleeve 14 reaches the position of the folding hook 15, and the folding hook 15 can hang the end sleeve 14 so as to lock the lower push rod 42 and the front wheel bracket 1 with each other. At the same time, the locking member 13 locks the push down rod 42 and the slider 5 to each other. The lower push rod 42 presses the first return member 8 against the front wheel support 1 to enable the first return member 8 to be in a contracted state, the upper rear wheel support 3 slides upwards to be stretched out relative to the lower rear wheel support 2, the second return member 9 is in an expanded state, and the seat rod 6 and the connecting rod 7 are folded among the front wheel support 1, the upper rear wheel support 3 and the lower rear wheel support 4.
When the vehicle frame 100 in the unfolded state is unlocked, the upper push rod 41 is pushed to slide downwards to trigger the locking piece 13 to unlock, so that the front wheel bracket 1, the lower push rod 42 and the sliding piece 5 are unlocked two by two. The second restoring piece 9 can provide restoring force to drive the upper rear wheel bracket 3 to ascend, and the sliding piece 5 automatically slides downwards along the front wheel bracket 1 under the driving of a crank sliding block mechanism formed by the seat rod 6, the connecting rod 7 and the upper rear wheel bracket 3. The seat rod 6, the connecting rod 7 and the sliding piece 5 drive the upper rear wheel bracket 3 and the lower rear wheel bracket 2 to approach the front wheel bracket 1. At this time, the frame is partially folded automatically, then the upper push rod 41 is pushed downwards to drive the lower push rod 42 to slide downwards, the first return piece 8 is compressed and contracted, the lower end of the lower push rod 42 slides to the sliding piece 5, the locking piece 13 locks the lower push rod 42 and the sliding piece 5 with each other, the end sleeve 14 on the lower push rod 42 reaches the folding hook 15, and the end sleeve 14 is hooked by the folding hook 15 to lock the lower push rod 42 and the front wheel bracket 1 with each other, so that the folding of the frame 100 is completed. Therefore, the semi-automatic folding device can realize semi-automatic folding of the baby carriage.
When the frame 100 in a folded state is unlocked, the upper push rod 41 is pulled out upwards to enable the upper push rod 41 to extend out of the lower push rod 42, the folding hook 15 is separated from the end sleeve 14, the first return piece 8 can provide a restoring force to drive the lower push rod 42 to ascend, at the moment, the lower push rod 42 and the sliding piece 5 still keep mutually locked, the lower push rod 42 can drive the sliding piece 5 to ascend synchronously, a crank-slider mechanism formed by the sliding piece 5, the seat rod 6 and the connecting rod 7 drives the upper rear wheel bracket 3 and the lower rear wheel bracket 2 to unfold backwards, the upper rear wheel bracket 3 slides downwards to shrink, and the second return piece 9 is compressed to shrink. It can be seen that except for the push rod 41 being pulled out manually, the utility model can realize the whole automatic unfolding of the stroller frame.
As described above, we have fully described the gist of the present invention, but the present invention is not limited to the above-described embodiments and implementation methods. A practitioner of the related art may make various changes and implementations within the scope of the technical idea of the present invention.
Claims (10)
1. A child stroller comprising a frame (100) having an expanded state and a collapsed state, a front wheel (101) disposed at a front portion below the frame (100), and a rear wheel (102) disposed at a rear portion below the frame (100), wherein the frame (100) comprises:
a front wheel bracket (1), wherein the lower part of the front wheel bracket (1) is connected with a front wheel (101);
a lower rear wheel bracket (2), the lower part of the lower rear wheel bracket (2) is connected with a rear wheel (102);
the upper rear wheel support (3), the upper portion of the upper rear wheel support (3) is in pivot connection with the front wheel support (1), the lower portion of the upper rear wheel support (3) is in sliding connection with the lower rear wheel support (2), and the upper rear wheel support (3) can slide up and down along the extending direction of the lower rear wheel support (2);
the push rod assembly (4) is in sliding connection with the front wheel bracket (1), and the push rod assembly (4) can slide up and down along the extending direction of the front wheel bracket (1);
the sliding piece (5), the sliding piece (5) is connected with the front wheel bracket (1) in a sliding way, and the sliding piece (5) can slide up and down along the extending direction of the front wheel bracket (1);
a seat rod (6), wherein the front part of the seat rod (6) is pivotally connected with the sliding piece (5), and the rear part of the seat rod (6) is pivotally connected with the upper rear wheel bracket (3);
a connecting rod (7), wherein the upper part of the connecting rod (7) is pivotally connected with the seat rod (6), and the lower part of the connecting rod (7) is pivotally connected with the lower rear wheel bracket (2);
the first return piece (8) is respectively connected with the front wheel bracket (1) and the push rod assembly (4), and the first return piece (8) is used for providing a restoring force to drive the push rod assembly (4) to slide upwards along the front wheel bracket (1);
the second return piece (9), the said second return piece (9) connects with upper back wheel support (3) and lower back wheel support (2) separately, the said second return piece (9) is used for providing the restoring force to drive upper back wheel support (3) to slide along lower back wheel support (2) upwardly;
locking means for locking the frame (100) in the unfolded state and in the folded state,
when the frame (100) is in an unfolded state, the first return piece (8) is in an unfolded state, and the second return piece (9) is in a contracted state; when the frame (100) is in a folded state, the first return piece (8) is in a contracted state, and the second return piece (9) is in an expanded state; when the frame (100) in the unfolded state is unlocked, the second return piece (9) can provide a restoring force to drive the upper rear wheel bracket (3) to move upwards, and the seat rod (6), the connecting rod (7) and the sliding piece (5) drive the upper rear wheel bracket (3) and the lower rear wheel bracket (2) to be close to the front wheel bracket (1); when the frame is unfolded, the push rod assembly (4) and the sliding piece (5) are locked with each other, the first restoring piece (8) can provide restoring force to drive the push rod assembly (4) to ascend, the push rod assembly (4) can drive the sliding piece (5) to ascend synchronously, the sliding piece (5), the seat rod (6) and the connecting rod (7) drive the upper rear wheel support (3) and the lower rear wheel support (2) to unfold backwards, and the upper rear wheel support (3) slides downwards to shrink.
2. A stroller according to claim 1, wherein when the frame (100) is in the unfolded state, the front wheel support (1) and the lower rear wheel support (2) are unfolded in tandem, the push rod assembly (4) is slid upwards to be unfolded relative to the front wheel support (1), the locking device locks the push rod assembly (4) and the sliding member (5) on the front wheel support (1), the upper rear wheel support (3) presses the second return member (9) against the lower rear wheel support (2) to bring the second return member (9) into the compressed state, the seat bar (6) is unfolded between the front wheel support (1) and the upper rear wheel support (3) in the front-rear direction, and the connecting bar (7) is unfolded between the seat bar (6) and the lower rear wheel support (2); when the frame (100) is in a folded state, the front wheel support (1) and the lower rear wheel support (2) are relatively close, the push rod assembly (4) slides downwards to be contracted relative to the front wheel support (1), the locking device locks the push rod assembly (4) and the sliding piece (5) with each other and simultaneously locks the push rod assembly (4) and the front wheel support (1) with each other, the push rod assembly (4) presses the first recovery piece (8) against the front wheel support (1) to enable the first recovery piece (8) to be in a contracted state, the upper rear wheel support (3) slides upwards to be stretched relative to the lower rear wheel support (2), and the seat rod (6) and the connecting rod (7) are folded among the front wheel support (1), the upper rear wheel support (3) and the lower rear wheel support (2); when the vehicle frame (100) in the unfolded state is unlocked, two of the front wheel bracket (1), the push rod assembly (4) and the sliding piece (5) are unlocked, and the push rod assembly (4) and the sliding piece (5) can slide on the front wheel bracket (1) respectively; when the frame (100) in the folded state is unlocked, the front wheel bracket (1) is mutually unlocked with the push rod assembly (4) and the sliding piece (5), and the push rod assembly (4) and the sliding piece (5) are mutually locked.
3. A stroller according to claim 1, wherein the push rod assembly (4) comprises an upper push rod (41) and a lower push rod (42), the lower push rod (42) being slidably connected to the front wheel support (1), the lower push rod (42) being slidable up and down in the direction of extension of the front wheel support (1); the upper push rod (41) is in sliding connection with the lower push rod (42), and the upper push rod (41) can slide up and down along the extending direction of the lower push rod (42).
4. A stroller according to claim 3, wherein the lower push rod (42) is a tube, the upper push rod (41) is inserted into the lower push rod (42) and can slide up and down on the upper push rod (41), and when the frame (100) is in the unfolded state, the upper push rod (41) slides up and out of the lower push rod (42); when the frame (100) is in a folded state, the upper push rod (41) slides downwards to retract inwards towards the lower push rod (42).
5. A stroller according to claim 3, wherein the frame (100) further comprises a sliding sleeve assembly (10), the sliding sleeve assembly (10) comprises an upper sliding sleeve (11) fixedly arranged on the front wheel bracket (1) and a lower sliding sleeve (12) fixedly arranged on the lower push rod (42), the lower push rod (42) is sleeved in the upper sliding sleeve (11), the front wheel bracket (1) is sleeved in the lower sliding sleeve (12), and the lower push rod (42) can slide up and down relative to the front wheel bracket (1) under the guiding action of the upper sliding sleeve (11) and the lower sliding sleeve (12).
6. A stroller according to claim 3, wherein the locking device comprises a locking member (13) arranged at the lower part of the push rod (42), when the frame (100) is in a unfolded state, the locking member (13) can lock the front wheel bracket (1), the push rod (42) and the sliding member (5) with each other, and pushing the push rod (41) to slide downwards can trigger the locking member (13) to unlock and unlock the front wheel bracket (1), the push rod (42) and the sliding member (5) with each other; the locking member (13) is capable of locking the push down rod (42) and the slide member (5) to each other when the frame (100) is in the folded state.
7. A stroller according to claim 3, wherein the locking means comprise a head cap (14) arranged on the upper part of the push down rod (42) and a folding hook (15) arranged on the upper part of the front wheel support (1), and wherein the push down rod (42) slides downwards when the frame (100) is in the folded state until the head cap (14) reaches the folding hook (15), and the folding hook (15) is capable of hanging the head cap (14) and locking the push down rod (42) and the front wheel support (1) to each other.
8. The stroller of claim 5, wherein the sliding member (5) is of a sliding sleeve structure, and the sliding member (5) is sleeved on the front wheel bracket (1) and is positioned below the upper sliding sleeve (11) and the lower sliding sleeve (12).
9. A stroller according to claim 1, wherein the first return member (8) and the second return member (9) are compression springs.
10. A stroller according to claim 1, wherein the front wheel support (1) and the lower rear wheel support (2) are both pipe elements, the first return member (8) is installed inside the front wheel support (1), the upper part of the first return member (8) is connected with the push rod assembly (4), and the lower part of the first return member is propped against the inner lower part of the front wheel support (1); the second return piece (9) is arranged in the lower rear wheel bracket (2), the upper part of the second return piece (9) is in propping connection with the lower part of the upper rear wheel bracket (3), and the lower part of the second return piece (9) is in propping connection with the inner lower part of the lower rear wheel bracket (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710217739.1A CN106985891B (en) | 2017-04-05 | 2017-04-05 | Child cart |
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| CN112874614A (en) * | 2021-02-04 | 2021-06-01 | 安徽小龙仔儿童用品有限公司 | Children's bassinet with folding function and use method thereof |
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| CN203402224U (en) * | 2013-07-08 | 2014-01-22 | 程宝贤 | Sliding type folding structure of baby stroller |
| CN204623534U (en) * | 2015-04-15 | 2015-09-09 | 好孩子儿童用品有限公司 | Children trolley |
| CN105584513B (en) * | 2016-01-28 | 2017-10-10 | 好孩子儿童用品有限公司 | Children trolley |
| CN206826724U (en) * | 2017-04-05 | 2018-01-02 | 好孩子儿童用品有限公司 | A kind of children trolley |
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