CN108482472B - Child cart - Google Patents
Child cart Download PDFInfo
- Publication number
- CN108482472B CN108482472B CN201810288321.4A CN201810288321A CN108482472B CN 108482472 B CN108482472 B CN 108482472B CN 201810288321 A CN201810288321 A CN 201810288321A CN 108482472 B CN108482472 B CN 108482472B
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- China
- Prior art keywords
- frame
- rod
- push rod
- rotatably connected
- stay
- Prior art date
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- 238000005452 bending Methods 0.000 claims description 16
- 230000007246 mechanism Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 7
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- B62B7/086—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
- B62B9/00—Accessories or details specially adapted for children's carriages or perambulators
- B62B9/20—Handle bars; Handles
-
- 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
Abstract
The invention discloses a child stroller, which comprises a stroller frame with an unfolding state and a folding state, wherein the stroller frame comprises two side brackets and a foldable connecting frame, each side bracket comprises a rear frame, a front frame and an upper frame, a sliding piece is arranged on the rear frame and connected with the upper frame through a rear stay bar, and the sliding piece is connected with the front frame through a front stay bar; when the trolley frame is folded, the upper frame is folded downwards and the rear frame is closed, and the rear supporting rod drives the sliding piece to slide downwards along the length direction of the rear frame; the sliding piece drives the front frame to the rear frame to be close through the front supporting rod, front and back folding of the trolley frame is achieved, the size of the whole folded trolley for children is smaller, and transportation and storage are facilitated.
Description
Technical Field
The invention relates to the field of child carts, in particular to a child cart.
Background
The utility model provides a children's shallow among the prior art, is in including having folding state and expansion state's shallow frame, setting are in the wheel subassembly of the lower part of shallow frame and be used for with the shallow frame lock is in expansion state's locking mechanical system, the shallow frame includes right side support, left side support, back frame and is used for connecting right side support with the link that can transversely fold of left side support, the folding of link is realized through the side support, and overall structure is complicated, and the volume of the shallow frame after folding is still very big.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a child stroller, which has the following technical scheme:
the invention provides a children's barrow, which comprises a barrow frame with an unfolding state and a folding state, a locking device for locking the barrow frame in the unfolding position, and a wheel assembly arranged at the lower part of the barrow frame, wherein the wheel assembly comprises a front wheel assembly and a rear wheel assembly, the barrow frame comprises side brackets positioned at the left side and the right side and a connecting frame which is positioned between the side brackets at the two sides and can be transversely folded,
the side brackets on each side include:
the rear wheel assembly is arranged at the lower part of the rear frame;
the front wheel assembly is arranged at the lower part of the front frame;
the upper frame comprises a lower push rod, an upper push rod and a rear swing rod, the upper part of the rear frame is rotationally connected with the lower push rod, and the upper part of the front frame is rotationally connected with the lower push rod; the upper part of the lower push rod is rotationally connected with the upper push rod; the upper part of the rear swing rod is rotationally connected with the lower end of the upper push rod, the lower end of the rear swing rod is rotationally connected with the rear frame, and the rear frame, the lower push rod, the upper push rod and the rear swing rod on each side respectively form a four-bar mechanism;
a slider slidably disposed on the rear frame;
one end of the rear stay bar is rotationally connected with the sliding piece, and the other end of the rear stay bar is rotationally connected with the upper frame;
one end of the front stay bar is rotationally connected with the front frame, and the other end of the front stay bar is rotationally connected with the sliding piece;
the connecting frames are respectively connected with the side brackets at two sides,
when the cart frame is folded from an unfolding state to a folding state, a locking device for locking the cart frame in a clamping band state is unlocked, the upper frame is pressed down to enable the upper frame to be folded downwards and the rear frame to be close, and the rear supporting rod drives the sliding piece to slide downwards along the length direction of the rear frame; the sliding piece drives the front frame to be close to the rear frame through the front supporting rod, so that the whole frame is reduced in front-back and up-down dimensions. The folding of the cart frame in the left-right direction is realized by the folding of the connecting frame, and the folding operation of the connecting frame can be performed after the folding process is finished, can be performed simultaneously with the folding process, and can be performed before the folding process.
Preferably, the connection frame comprises a rear connection frame and a front connection frame which are foldable and allow the lateral dimensions of the trolley frame to be reduced,
the rear connecting frame comprises a first supporting rod and a second supporting rod which is intersected with the first supporting rod and is rotationally connected at the intersection, one end of the first supporting rod is rotationally connected with a right lower pushing rod in the lower pushing rods, the other end of the first supporting rod is rotationally connected with a second sliding piece in the sliding pieces, one end of the second supporting rod is rotationally connected with a left lower pushing rod in the lower pushing rods, and the other end of the second supporting rod is rotationally connected with a first sliding piece in the sliding pieces; further, one end of the first stay bar is rotationally connected with a right lower push rod in the lower push rods through a first connecting piece, the other end of the first stay bar is rotationally connected with a second sliding piece in the sliding pieces through a second connecting piece, one end of the second stay bar is rotationally connected with a left lower push rod in the lower push rods through a third connecting piece, and the other end of the second stay bar is rotationally connected with a first sliding piece in the sliding pieces through a fourth connecting piece;
the front connecting frame comprises a third supporting rod, a fourth supporting rod which is intersected with the third supporting rod and is rotationally connected with the intersection, a fifth supporting rod which is rotationally connected with the front end of the third supporting rod, and a sixth supporting rod which is rotationally connected with the front end of the fourth supporting rod; the rear end of the third stay bar is rotationally connected with the first sliding part, and the fifth stay bar is rotationally connected with a left front frame in the front frame; the rear end of the fourth stay bar is rotationally connected with the second sliding piece, and the sixth stay bar is rotationally connected with a right front frame in the front frame; further, the third stay bar is rotationally connected with the first sliding part through a fifth connecting piece, and the fifth stay bar is rotationally connected with a left front frame in the front frame through a sixth connecting piece; the fourth stay bar is rotationally connected with the second sliding part through a seventh connecting piece, and the sixth stay bar is rotationally connected with a right front frame in the front frame through an eighth connecting piece. Through the setting of preceding link for the shallow frame is when the expansion state, and the whole structure is more firm, and at folding in-process, the opposite movement between left side support and the right side support is more coordinated smooth.
Through the arrangement of the rear connecting frame and the front connecting frame, when the cart frame is folded from an unfolding state to a folding state, the sliding piece drives the connecting frames to be transversely folded, so that the side brackets on two sides are close, namely the volumes of the cart frame in the front-back direction, the volumes of the cart frame in the left-right direction and the volumes of the cart frame in the up-down direction are simultaneously reduced, and the folding operation is completed in one step. The connection between each connecting frame and the side bracket can be conveniently realized through the arrangement of the connecting piece.
Further preferably, the rear frame is rotatably connected with the lower push rod on each side around a first shaft, the front frame is rotatably connected with the lower push rod around a second shaft, and the first shaft is collinear or parallel with the second shaft;
the first connecting piece is rotationally connected with the right lower push rod around the right shaft in the first shaft, and the third connecting piece is rotationally connected with the left lower push rod around the left shaft in the first shaft.
Further preferably, each side of the lower push rod comprises a lower push rod main body part and a bending part fixedly connected with the lower part of the lower push rod main body part, the first shaft is positioned at the lower part of the lower push rod main body part, and the second shaft is positioned at the lower part of the bending part;
when the trolley frame is in a unfolding state, the length direction of the bending part is parallel to the length direction of the rear frame; when the cart frame is in a folded state, the axis of the first shaft and the axis of the second shaft are positioned in the same horizontal plane or are positioned in the same horizontal plane approximately. At this time, the height of the first shaft is equal to or substantially equal to the height of the second shaft.
Specifically, the second shaft includes a right shaft and a left shaft. The right lower push rod comprises a right lower push rod main body part and a right bending part fixedly connected with the lower part of the right lower push rod main body part, the right first shaft is positioned at the lower part of the right lower push rod main body part, and the right second shaft is positioned at the lower part of the right bending part;
the left lower push rod comprises a left lower push rod main body part and a left bending part fixedly connected with the lower part of the left lower push rod main body part, the left first shaft is positioned at the lower part of the left lower push rod main body part, and the left second shaft is positioned at the lower part of the left bending part. In this arrangement, the right first axis is parallel to the right second axis and the left first axis is parallel to the left second axis.
Further preferably, the rear swing rod is rotatably connected with the rear frame around a third shaft, and the sliding piece is located below the third shaft.
Preferably, the third shaft comprises a right three shaft and a left three shaft, the right rear swing rod is rotatably connected with the right rear frame around the right three shaft, and the first sliding piece is positioned below the right three shaft; the left rear swing rod is rotatably connected with the left rear frame around a left triaxial, and the second sliding piece is positioned below the left triaxial. In the transition process of the unfolding state and the folding state of the trolley frame, the first sliding piece slides on the lower part of the right rear frame, and the second sliding piece slides on the lower part of the left rear frame, so that the height dimension of the whole trolley frame in the folding state can be obviously reduced.
Further preferably, the right front stay bar and the sixth stay bar are respectively connected with the right front frame in a rotating way around a right four-axis, and the right front stay bar and the third stay bar are respectively connected with the first sliding piece in a rotating way around a right five-axis; the left front supporting rod and the fifth supporting rod are respectively connected with the left front frame in a rotating mode around a left four-axis mode, and the left front supporting rod and the fourth supporting rod are respectively connected with the second sliding piece in a rotating mode around a left five-axis mode. Specifically, the right front stay bar and the eighth connecting piece are respectively connected with the right front frame in a rotating way around a right four-axis, and the right front stay bar and the fifth connecting piece are respectively connected with the first sliding piece in a rotating way around a right five-axis; the left front supporting rod and the sixth connecting piece are respectively connected with the left front frame in a rotating mode around a left four-axis mode, and the left front supporting rod and the seventh connecting piece are respectively connected with the second sliding piece in a rotating mode around a left five-axis mode.
Further preferably, the left rear stay bar of the first stay bar and the rear stay bar is respectively connected with the second sliding piece in a rotating way around a left six-axis, and the axial direction of the left five-axis is parallel to the axial direction of the left six-axis; the second stay bar and a right rear stay bar in the rear stay bars are respectively connected with the first sliding piece in a rotating mode around a right six-axis mode, and the axial direction of the right six-axis mode is parallel to the axial direction of the right five-axis mode. Particularly, the left rear stay rod of the second connecting piece and the rear stay rod is respectively connected with the second sliding piece in a rotating way around a left six-axis way, and the axial direction of the left five-axis way is parallel to the axial direction of the left six-axis way; the fourth connecting piece and a right rear stay bar in the rear stay bars are respectively connected with the first sliding piece in a rotating mode around a right six-axis mode, and the axial direction of the right six-axis mode is parallel to the axial direction of the right five-axis mode.
Preferably, the upper frame further comprises a seat rod, a sliding sleeve is slidably arranged on the outer side wall of the seat rod along the length direction of the seat rod, the rear end of the seat rod is rotatably connected with the rear swing rod around a seventh shaft, and the sliding sleeve is rotatably connected with the lower push rod;
specifically, the seventh shaft comprises a left seventh shaft and a right seventh shaft, the sliding sleeve comprises a first sliding sleeve and a second sliding sleeve, and the upper frame comprises an upper left frame and an upper right frame. The right upper frame further comprises a right seat rod, a first sliding sleeve is slidably arranged on the outer side wall of the right seat rod along the length direction of the right seat rod, the rear end of the right seat rod is rotationally connected with the right rear swing rod around a right seven-axis, and the first sliding sleeve is rotationally connected with the right lower push rod; the left upper frame further comprises a left seat rod, a second sliding sleeve is slidably arranged on the outer side wall of the left seat rod along the length direction of the left seat rod, the rear end of the left seat rod is rotatably connected with the left rear swing rod around a left seven-axis, and the second sliding sleeve is rotatably connected with the left lower push rod.
Further preferably, the cart frame further includes a back rest provided between the side brackets at both sides, the back rest including:
the side backrest frames are respectively positioned at the left side and the right side, each side backrest frame comprises an upper backrest rod and a lower backrest rod, the upper backrest rod is slidably connected with the lower backrest rod along the length direction of the lower backrest rod, and the side backrest frames are respectively connected with the side brackets at the same side;
the connecting rod assemblies are arranged between the two side backrest frames at the two sides, the backrest frames at the two sides are connected through the connecting rod assemblies capable of being transversely folded, and each connecting rod assembly comprises a first connecting rod and a second connecting rod which is intersected with the first connecting rod and is rotationally connected at the intersection; one end of the first connecting rod is rotationally connected with a second upper backrest rod in the upper backrest rods, and the other end of the first connecting rod is rotationally connected with a first lower backrest rod in the lower backrest rods; one end of the second connecting rod is rotatably connected with a second lower backrest rod in the lower backrest rods, and the other end of the second connecting rod is rotatably connected with a first upper backrest rod in the upper backrest rods.
Preferably, the cart frame further comprises a handrail connecting rod, the handrail connecting rod comprises a first handrail connecting rod and a second handrail connecting rod rotationally connected with the first handrail connecting rod, the first handrail connecting rod is rotationally connected with the top end of the upper right push rod, and the second handrail connecting rod is rotationally connected with the top end of the upper left push rod.
Preferably, the rear stay is rotatably connected with the push rod.
Further preferably, when the cart frame is in a folded state, the front wheel assembly and the rear wheel assembly coincide in a width direction of the cart frame; the height of the upper end of the front frame, the height of the upper end of the rear frame and the height of the upper end of the upper push rod are equal; the height of the lower end of the upper push rod is equal to that of the lower end of the rear wheel assembly.
Particularly, when the trolley frame is in a folded state, the left front wheel assembly and the left rear wheel assembly are overlapped in the width direction of the trolley frame, and the right front wheel assembly and the right rear wheel assembly are overlapped in the width direction of the trolley frame, so that the size of the trolley frame in the front-rear direction and the size of the trolley frame in the width direction are minimized, and the space between the brackets at the two sides of the trolley frame is fully utilized; the lower end of the upper push rod and the rear wheel assembly are supported on the ground together to enable the child cart to stand on the ground, the height of the upper end of the right front frame from the ground, the height of the upper end of the right rear frame from the ground and the height of the upper end of the right upper push rod from the ground are equal, the height of the upper end of the left front frame from the ground, the height of the upper end of the left rear frame from the ground and the height of the upper end of the left upper push rod from the ground are equal, and the size of the cart frame in the height direction is minimized; the height of the lower end of the right upper push rod is equal to that of the lower end of the right rear wheel assembly, and the height of the lower end of the left upper push rod is equal to that of the lower end of the left rear wheel assembly, so that the trolley frame can realize self-standing under the cooperation of the upper push rod and the rear wheel assembly in a folding state.
The technical scheme provided by the invention has the following beneficial effects:
according to the child stroller, the transverse folding and the front-back folding of the stroller frame are realized through the driving of the sliding piece arranged on the rear frame, and the volume of the whole folded child stroller is smaller, so that the child stroller is convenient to transport and store.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a child stroller according to the present invention in an unfolded state;
FIG. 2 is an exploded view of the child stroller provided by the present invention in an expanded state;
FIG. 3 is a side view of the child stroller provided by the present invention in an expanded state;
FIG. 4 is a side view of the child stroller provided by the present invention during folding;
FIG. 5 is a perspective view of the child stroller provided by the present invention during folding;
fig. 6 is a side view of the stroller provided by the present invention in a collapsed condition.
Wherein, the reference numerals are as follows: 11-right side brackets; 111-right rear frame; 112-right front frame; 113-a right push rod; 114-upper right pushrod; 115-right rear swing rod; 116-right rear stay; 117-right front stay; 118-right seat post; 12-left side bracket; 121-left rear frame; 122-left front frame; 123-lower left push rod; 124-upper left pushrod; 125-left rear swing rod; 126-left rear stay; 127-left front stay; 128-left seat bar; 2-a wheel assembly; 3-a backrest frame; 31-a first side back frame; 311-a first upper backrest bar; 312-a first lower back bar; 32-a second side back frame; 321-a second upper backrest bar; 322-a second lower back bar; 33-a connecting rod assembly; 331-a first link; 332-a second link; 41-a rear connecting frame; 411-first stay; 412-a second brace; 42-front connecting frame; 421-third struts; 422-fourth struts; 423-fifth stay; 424-sixth struts; 511-a first slider; 521-a second slider; 512-a first sliding sleeve; 522-a second sliding sleeve; 61-a first connector; 62-a second connector; 63-a third connector; 64-fourth connectors; 64-fifth connection; 66-sixth connection; 67-seventh connector; 68-eighth connector; 7-armrest connecting rods; 71-a first armrest connecting rod; 72-a second armrest connecting rod; 1102-right diaxon; 1103-right triaxial; 1105-five right axis; 1106-right six axes; 1107-right seven axes; 1201-left axis; 1202-left two axes; 1203-left triaxial; 1204-left four axes; 1205-left five axes; 1206-left six axes; 1207-left seven axes.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or device.
As shown in fig. 1 to 6, a stroller comprises a stroller frame having an unfolded state and a folded state, a wheel assembly 2 provided at a lower portion of the stroller frame, the wheel assembly 2 comprising a left front wheel assembly, a left rear wheel assembly, a right front wheel assembly and a right rear wheel assembly, the stroller frame comprising a right side bracket 11, a left side bracket 12 and a connection frame capable of being laterally folded for connecting the right side bracket 11 and the left side bracket 12, the connection frame being provided between the right side bracket 11 and the left side bracket 12,
the right side bracket 11 includes a right rear frame 111, a right front frame 112, a right upper frame, a first slider 511, a right rear stay 116, and a right front stay 117, the right rear wheel assembly being disposed at a lower portion of the right rear frame 111, the right front wheel assembly being disposed at a lower portion of the right front frame 112;
the upper right frame comprises a lower right push rod 113, an upper right push rod 114, a rear right swing rod 115 and a right seat rod 118, the upper part of the rear right frame 111 is rotationally connected with the lower right push rod 113 around a right shaft, and the upper part of the lower right push rod 113 is rotationally connected with the upper right push rod 114; the upper part of the right rear swing rod 115 is rotationally connected with the lower end of the right upper push rod 114, the lower end of the right rear swing rod 115 is rotationally connected with the right rear frame 111 around the right three axis 1103, and the right rear frame 112, the right lower push rod 113, the right upper push rod 114 and the right rear swing rod 115 form a four-bar mechanism;
the upper part of the right front frame 112 is rotatably connected with the right push rod 113 around a right two-shaft 1102, and the right one-shaft and the right two-shaft 1102 can be collinear or parallel, and in the embodiment, the right one-shaft and the right two-shaft 1102 are parallel; in this embodiment, the right push rod 113 includes a right push rod main body portion and a right bending portion fixedly connected to a lower portion of the right push rod main body portion, the right first shaft is located at a lower portion of the right push rod main body portion, and the right second shaft 1102 is located at a lower portion of the right bending portion; when the cart frame is in the unfolded state, the length direction of the right bending part is parallel or approximately parallel to the length direction of the right rear frame 111; when the stroller frame is in a folded condition, the right first axle and the right second axle 1102 are equal or substantially equal in height.
The outer side wall of the right seat rod 118 is slidably provided with a first sliding sleeve 512 along the length direction of the right seat rod 118, the rear end of the right seat rod 118 is rotationally connected with the right rear swing rod 115 around a right seven-shaft 1107, the first sliding sleeve 512 is rotationally connected with the right push rod 113, and the right seat rod 118 can slide under the guide of the first sliding sleeve 512 when the trolley frame is switched between the unfolding position and the folding position;
the first sliding member 511 is slidably disposed on the right rear frame 111, and the first sliding member 511 is located below the right triaxial 1103, one end of the right rear stay 116 is rotatably connected with the first sliding member 511 about the right sixth axis 1106, and the other end of the right rear stay 116 is rotatably connected with any one of the left upper push rod 114, the right lower push rod 113 and the right seat rod 118 in the right upper frame, in this embodiment, the right rear stay 116 is rotatably connected with the right lower push rod 113;
one end of the right front stay 117 is rotatably connected to the right front frame 112 about a right four-axis, and the other end of the right front stay 117 is rotatably connected to the first slider 511 about a right five-axis 1105, and the axial direction of the right five-axis 1105 is parallel to the axial direction of the right six-axis 1106.
The left side bracket 12 includes a left rear frame 121, a left front frame 122, a left upper frame, a second slider 521, a left rear stay 126, and a left front stay 127, the left rear wheel assembly being disposed at a lower portion of the left rear frame 121, the left front wheel assembly being disposed at a lower portion of the left front frame 122;
the upper left frame comprises a lower left push rod 123, an upper left push rod 124, a rear left swing rod 125 and a left seat rod 128, the upper part of the rear left frame 121 is rotationally connected with the lower left push rod 123 around a left shaft 1201, and the upper part of the lower left push rod 123 is rotationally connected with the upper left push rod 124; the upper part of the left rear swing rod 125 is rotationally connected with the lower end of the left upper push rod 124, the lower end of the left rear swing rod 125 is rotationally connected with the left rear frame 121 around the left triaxial 1203, and the left rear frame 122, the left lower push rod 123, the left upper push rod 124 and the left rear swing rod 125 form a four-bar linkage mechanism;
the upper part of the left front frame 122 is rotatably connected with the left push rod 123 around a left two-axis 1202, the left first axis 1201 and the left two-axis 1202 can be collinear or parallel, and in the embodiment, the left first axis 1201 and the left two-axis 1202 are parallel; in this embodiment, the left push rod 123 includes a left push rod main body portion and a left bending portion fixedly connected to a lower portion of the left push rod main body portion, the left first shaft 1201 is located at the lower portion of the left push rod main body portion, and the left second shaft 1202 is located at the lower portion of the left bending portion. When the cart frame is in the unfolded state, the length direction of the left bending part is parallel or approximately parallel to the length direction of the left rear frame 121; when the stroller frame is in a collapsed condition, the left first axle 1201 and the left second axle 1202 are equal or substantially equal in height.
The outer side wall of the left seat rod 128 is slidably provided with a second sliding sleeve 522 along the length direction of the left seat rod 128, the rear end of the left seat rod 128 is rotationally connected with the left rear swing rod 125 around a left seventh shaft 1207, the second sliding sleeve 522 is rotationally connected with the left lower push rod 123, and when the cart frame is converted from the unfolding position to the folding position, the left seat rod 128 can slide under the guide of the second sliding sleeve 522;
the second slider 521 is slidably disposed on the left rear frame 121, and the second slider 521 is located below the left triaxial 1203; one end of the left rear stay bar 126 is rotatably connected with the second sliding piece 521, and the other end of the left rear stay bar (126) is rotatably connected with the left upper frame; one end of the left rear stay 126 is rotatably connected with the second slider 521 around a left six-axis 1206, and the other end of the left rear stay 126 is rotatably connected with any one of the left upper push rod 124, the left lower push rod 123 and the left seat rod 128 in the left upper frame, in this embodiment, the left rear stay 126 is rotatably connected with the left lower push rod 123;
one end of the left front stay 127 is rotatably connected to the left front frame 122 about a left four axis 1204, the other end of the left front stay 127 is rotatably connected to the second slider 521 about a left five axis 1205, and the axial direction of the left five axis 1205 is parallel to the axial direction of the left six axis 1206.
The connection frame comprises a rear connection frame 41 which is foldable and allows the transverse dimension of the cart frame to be reduced, and a front connection frame 42 which is foldable and allows the transverse dimension of the cart frame to be reduced, wherein the rear connection frame 41 comprises a first stay 411 and a second stay 412 which is intersected with the first stay 411 and is rotatably connected at the intersection, one end of the first stay 411 is rotatably connected with the right push rod 113 through a first connecting piece 61, the other end of the first stay 411 is rotatably connected with a second sliding piece 521 through a second connecting piece 62, one end of the second stay 412 is rotatably connected with the left push rod 123 through a third connecting piece 63, and the other end of the second stay 412 is rotatably connected with the first sliding piece 511 through a fourth connecting piece 64.
In this embodiment, the first connecting member 61 is also rotatably connected to the right push rod 113 about the right axis, and the third connecting member 63 is also rotatably connected to the left push rod 123 about the left axis 1201; the second connecting member 62 is also rotatably connected to the second slider 521 about the left six axis 1206, and the fourth connecting member 64 is also rotatably connected to the first slider 511 about the right six axis 1106, so that the overall structure of the stroller frame is more compact.
The front connection frame 42 includes a third stay 421, a fourth stay 422 intersecting the third stay 421 and rotatably connected at the intersection, a fifth stay 423 rotatably connected to one end of the third stay 421, and a sixth stay 424 rotatably connected to one end of the fourth stay 422; the other end of the third supporting rod 421 is rotatably connected with the first sliding member 511 through the fifth connecting member 65, and the fifth supporting rod 423 is rotatably connected with the left front frame 122 through the sixth connecting member 66; the other end of the fourth stay 422 is rotatably coupled to the second slider 521 via a seventh link 67, and the sixth stay 424 is rotatably coupled to the right front frame 112 via an eighth link 68.
In this embodiment, the fifth connecting member 65 is also rotatably connected to the first sliding member 511 about the right five axis 1105, and the sixth connecting member 66 is also rotatably connected to the left front frame 122 about the left four axis 1204; the seventh connecting piece 67 is also rotatably connected with the second sliding piece 521 around the left five axis, and the eighth connecting piece 68 is also rotatably connected with the right front frame 112 around the right four axis, so that the overall structure of the cart frame is more compact.
The connecting frame is connected with the left bracket 12 and the right bracket 11 through a plurality of connecting pieces, the connecting pieces are connected around the existing rotating shafts of the left bracket 12 and the right bracket 11, the space is efficiently utilized, and the technical scheme that the rotating shafts adopted by the connecting pieces are collinear with the rotating shafts at the corresponding positions on the left bracket 12 and the right bracket 11 or the rotating shaft axes thereof are collinear is the same as the content to be protected by the invention, and the technical scheme also belongs to the scope to be protected by the invention.
In this embodiment, the cart frame further includes a backrest frame 3 disposed between the right side bracket 11 and the left side bracket 12, and the backrest frame 3 includes:
a first side back frame 31, the first side back frame 31 including a first upper back bar 311 and a first lower back bar 312, the first upper back bar 311 being slidably connected to the first lower back bar 312 along a length direction of the first lower back bar 312, the first side back frame 31 also being rotatably connected to the right seat bar 118 about a right seventh axis 1107;
a second side backrest frame 32, wherein the second side backrest frame 32 comprises a second upper backrest rod 321 and a second lower backrest rod 322, the second upper backrest rod 321 is slidably connected with the second lower backrest rod 322 along the length direction of the second lower backrest rod 322, and the second side backrest frame 32 is also rotatably connected with the left seat rod 128 around a left seventh axis 1207;
the link assembly 33, the first side back frame 31 and the second side back frame 32 are connected by the link assembly 33 capable of being folded laterally; the link assembly 33 includes a first link 331 and a second link 332 intersecting the first link 331 and rotatably connected at the intersection; one end of the first link 331 is rotatably connected to the second upper backrest rod 321, and the other end of the first link 331 is rotatably connected to the first lower backrest rod 312; one end of the second link 332 is rotatably connected to the second lower backrest bar 322, and the other end of the second link 332 is rotatably connected to the first upper backrest bar 311.
When the stroller frame is changed from the unfolded state to the folded state, the right side bracket 11 is closed toward the left side bracket 12, the first side back frame 31 is closed toward the second side back frame 32, the first lower back bar 312 slides toward the first upper back bar 311, and the second lower back bar 322 slides toward the second upper back bar 321. The child stroller in this embodiment is provided with the backrest frame 3 which can be folded transversely and is low in height after being folded, and the backrest frame 3 is arranged so that the volume of the whole child stroller in the height direction becomes smaller after being folded, and the child stroller is convenient to transport and store.
The cart frame in this embodiment further includes a handrail connecting rod 7, the handrail connecting rod 7 includes a first handrail connecting rod 71 and a second handrail connecting rod 72 rotatably connected to the first handrail connecting rod 71, the first handrail connecting rod 71 is rotatably connected to the top end of the upper right push rod 114, and the second handrail connecting rod 72 is rotatably connected to the top end of the upper left push rod 124. The handrail connecting rod 7 is also provided with an anti-skid and shockproof sheath, which can provide the function of a handrail for the baby stroller.
When the stroller frame of the stroller in the present embodiment is in the unfolded state, as shown in fig. 1, the wheel assembly 2 fully supports the stroller while being grounded, and the first sliding member 511 and the second sliding member 521 are respectively located at the highest positions of the first sliding member 511 and the second sliding member 521 and are respectively closest to the right triaxial 1103 and the left triaxial 1203; the distance between the left side frame 12 and the right side frame 11 is the largest under the action of the connecting frame 41, and the left side frame 12 and the right side frame 11 are in the fully unfolded state respectively, at this time, the right front frame 112 is parallel or nearly parallel to the right lower push rod main body part of the right lower push rod 113, the left front frame 122 is parallel or nearly parallel to the left lower push rod main body part of the left lower push rod 123, the comprehensive length of the first side backrest frame 31 and the comprehensive length of the second side backrest frame 32 reach the largest respectively, and the right seat rod 118 and the left seat rod 128 are horizontal or nearly horizontal respectively for supporting a sitting position and the like, so as to provide comfortable support for a sitting child; the armrest connecting rod 7 is also in the fully open state.
When the stroller frame of the stroller in this embodiment is folded from the unfolded state to the folded state, as shown in fig. 4-5, the locking device for locking the stroller frame in the clamping band state is unlocked, and the upper left frame and the upper right frame are simultaneously pressed down, at this time, the upper push rod (including the upper left push rod 124 and the upper right push rod 114), the lower push rod (including the lower left push rod 123 and the lower right push rod 113), the rear swing rod (including the rear left swing rod 125 and the rear right swing rod 115) and the like approach to the rear frame (including the rear left frame 121 and the rear right frame 111), the first sliding member 511 and the second sliding member 521 are driven to slide along the direction of a in the drawing respectively by the rear stay rods (including the rear left stay rod 126 and the rear right stay rod 116), the first slide member 511 and the second slide member 521 drive the front frame (including the left front frame 122 and the right front frame 112) to approach the rear frame through the front stay (including the left front stay 127 and the right front stay 117) connected to the first slide member 511 and the second slide member 521 drive the left side bracket 12 and the right side bracket 11 to approach each other through the connecting frame (including the rear connecting frame 41 and the front connecting frame 42) connected to the first slide member 511 and the second slide member 521, so that the whole frame is folded transversely while the front-rear and up-down dimensions are reduced.
In this process, the right side bracket 11 of the backrest frame 3 is closed toward the left side bracket 12, the first side backrest frame 31 is closed toward the second side backrest frame 32, the first lower backrest bar 312 is slid toward the first upper backrest bar 311, the second lower backrest bar 322 is slid toward the second upper backrest bar 321, and the backrest frame 3 is folded in both the height direction and the width direction. The armrest connecting rod 7 also achieves a folding in which the first armrest connecting rod 71 is turned down and closes against the upper right push rod 114 and the second armrest connecting rod 72 is turned down and closes against the upper left push rod 124. The seat bar (comprising the right seat bar 118 and the left seat bar 128) slides downwards under the drive of the rear swing rod.
When the stroller frame of the stroller in this embodiment is in a folded state, as shown in fig. 6, the rear frame is taken as the center, the upper frame (including the upper left frame and the upper right frame) is completely closed toward the rear frame, the front frame is completely closed toward the rear frame, the first sliding member 511 and the second sliding member 521 are respectively located at the lower parts corresponding to the rear frame, the front wheel assemblies (including the front left wheel assembly and the front right wheel assembly) are respectively overlapped with the rear wheel assemblies (including the rear left wheel assembly and the rear right wheel assembly) at corresponding positions in the width direction of the stroller frame, the highest position of the backrest frame 3 and the highest position of the seat rod do not exceed the highest position of the rear frame, and the first rotating shaft (including the first right shaft and the second shaft 1102) and the second rotating shaft (including the first left shaft 1201 and the second shaft 1202) are the same or approximately the same, i.e. the axes of the first rotating shaft and the second rotating shaft are located in the same horizontal plane or approximately the same horizontal plane; the highest position of the front frame, the highest position of the rear frame and the highest position of the upper push rod are nearly equal, and the highest position of the folding state of the whole baby carriage is also the highest position of the folding state of the whole baby carriage. The lowest end of the upper push rod and the lowest end of the wheel assembly are approximately positioned on the same horizontal plane, so that the self-standing of the child stroller can be realized in a folded state. The right side bracket 11 and the left side bracket 12 are also completely closed under the action of the connecting frame, so that the transverse dimension of the whole stroller is minimized.
Further, the above-mentioned embodiments are merely preferred embodiments of the present invention, and are not intended to limit the present invention, so any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The baby stroller comprises a stroller frame with an unfolding state and a folding state, and a wheel assembly (2) arranged at the lower part of the stroller frame, wherein the wheel assembly (2) comprises a front wheel assembly and a rear wheel assembly, and is characterized in that the stroller frame comprises side brackets (11, 12) positioned at the left side and the right side and a connecting frame which is positioned between the side brackets (11, 12) at the two sides and can be transversely folded, the connecting frame is respectively connected with the side brackets (11, 12) at the two sides,
the side brackets (11, 12) of each side comprise:
a rear frame (111, 121), the rear wheel assembly being provided at a lower portion of the rear frame (111, 121);
a front frame (112, 122), the front wheel assembly being provided at a lower portion of the front frame (112, 122);
the upper frame comprises a lower push rod (113, 123), an upper push rod (114, 124) and a rear swing rod (115, 125), wherein the upper part of the rear frame (111, 121) is rotationally connected with the lower push rod (113, 123), and the upper part of the front frame (112, 122) is rotationally connected with the lower push rod (113, 123); the upper part of the lower push rod (113, 123) is rotatably connected with the upper push rod (114, 124); the upper part of the rear swing rod (115, 125) is rotationally connected with the lower end of the upper push rod (114, 124), the lower end of the rear swing rod (115, 125) is rotationally connected with the rear frame (111, 121), and the rear frame (112, 122), the lower push rod (113, 123), the upper push rod (114, 124) and the rear swing rod (115, 125) at each side form a four-bar mechanism;
a slider (511,521) slidably disposed on the rear frame (111, 121);
a rear stay (116, 126), one end of the rear stay (116, 126) is rotatably connected with the slider (511, 521), and the other end of the rear stay (116, 126) is rotatably connected with the upper frame;
a front stay (117, 127), one end of the front stay (117, 127) is rotatably connected with the front frame (112, 122), and the other end of the front stay (117, 127) is rotatably connected with the slider (511, 521);
when the cart frame is folded from the unfolded state to the folded state, the upper frame is folded downwards, and the rear supporting rods (116, 126) drive the sliding parts (511,521) to slide downwards along the length direction of the rear frames (111, 121); the sliding piece (511,521) drives the front frames (112, 122) to be close to the rear frames (111, 121) through the front stay (117,127).
2. The stroller of claim 1, wherein: the connecting frame comprises a rear connecting frame (41) and a front connecting frame (42),
the rear connecting frame (41) comprises a first stay bar (411) and a second stay bar (412) which is intersected with the first stay bar (411) and is rotationally connected at the intersection, one end of the first stay bar (411) is rotationally connected with a right lower push rod (113) in the lower push rods (113, 123), the other end of the first stay bar (411) is rotationally connected with a second sliding piece (521) in the sliding pieces (511,521), one end of the second stay bar (412) is rotationally connected with a left lower push rod (123) in the lower push rods (113, 123), and the other end of the second stay bar (412) is rotationally connected with a first sliding piece (511) in the sliding pieces (511,521);
the front connecting frame (42) comprises a third supporting rod (421), a fourth supporting rod (422) which is intersected with the third supporting rod (421) and is rotationally connected at the intersection, a fifth supporting rod (423) which is rotationally connected with the front end of the third supporting rod (421) and a sixth supporting rod (424) which is rotationally connected with the front end of the fourth supporting rod (422); the rear end of the third stay bar (421) is rotatably connected with the first sliding piece (511), and the fifth stay bar (423) is rotatably connected with the left front frame (122) in the front frames (112, 122); the rear end of the fourth stay bar (422) is rotatably connected with the second sliding piece (521), and the sixth stay bar (424) is rotatably connected with the right front frame (112) of the front frames (112, 122);
when the cart frame is folded from the unfolded state to the folded state, the sliding piece (511,521) drives the connecting frames (41, 42) to be transversely folded so that the side brackets (11, 12) on the two sides are close.
3. The stroller of claim 2, wherein: each side of the rear frame (111, 121) is rotatably connected with the lower push rod (113, 123) around a first shaft, the front frames (112, 122) are rotatably connected with the lower push rod (113, 123) around a second shaft, and the first shaft is collinear or parallel with the second shaft;
the first stay bar (411) is rotatably connected with the right push rod (113) around the right shaft in the first shaft, and the second stay bar (412) is rotatably connected with the left push rod (123) around the left shaft (1201) in the first shaft.
4. A stroller according to claim 3, wherein: each side of the push rod (113, 123) comprises a push rod main body part and a bending part fixedly connected with the lower part of the push rod main body part, the first shaft is positioned at the lower part of the push rod main body part, and the second shaft is positioned at the lower part of the bending part;
when the cart frame is in a unfolded state, the length direction of the bending part is parallel to the length direction of the rear frames (111, 121); when the cart frame is in a folded state, the axis of the first shaft and the axis of the second shaft are positioned in the same horizontal plane.
5. The stroller of claim 2, wherein: the rear swing link (115, 125) is rotatably connected with the rear frame (111, 121) around a third axis, and the sliding member (511, 521) is located below the third axis.
6. The stroller of claim 2, wherein:
the right front stay bar (117) and the sixth stay bar (424) are respectively connected with the right front frame (112) in a rotating way around a right four-axis, and the right front stay bar (117) and the third stay bar (421) are respectively connected with the first sliding piece (511) in a rotating way around a right five-axis (1105);
the left front stay bar (127) and the fifth stay bar (423) are respectively connected with the left front frame (122) in a rotating mode around a left four-axis (1204), and the left front stay bar (127) and the fourth stay bar (422) are respectively connected with the second sliding piece (521) in a rotating mode around a left five-axis (1205).
7. The stroller of claim 6, wherein: the left rear stay bar (126) in the first stay bar (411) and the rear stay bars (116, 126) is respectively connected with the second sliding piece (521) in a rotating way around a left six-axis (1206), and the axial direction of the left five-axis (1205) is parallel to the axial direction of the left six-axis (1206); the second stay bar (412) and a right rear stay bar (116) in the rear stay bars (116, 126) are respectively connected with the first sliding piece (511) in a rotating mode around a right six-axis (1106), and the axial direction of the right six-axis (1106) is parallel to the axial direction of the right five-axis (1105).
8. The stroller of claim 1, wherein: the upper frame further comprises a seat rod (118, 128), a sliding sleeve (512, 522) is slidably arranged on the outer side wall of the seat rod (118, 128) along the length direction of the seat rod (118, 128), the rear end of the seat rod (118, 128) is rotatably connected with the rear swing rod (115, 125) around a seventh axis, and the sliding sleeve (512, 522) is rotatably connected with the push rod (113, 123).
9. The stroller of claim 1, wherein: the cart frame further comprises a backrest frame (3) arranged between the side brackets (11, 12) on both sides, and the backrest frame (3) comprises:
side back frames (31, 32) respectively located at left and right sides, each side back frame (31, 32) including an upper back bar (311, 321) and a lower back bar (312, 322), the upper back bar (311, 321) being slidably connected to the lower back bar (312, 322) along a length direction of the lower back bar (312, 322), the side back frames (31, 32) being respectively connected to the side brackets (11, 12) on the same side;
a link assembly (33) disposed between the side back frames (31, 32) on both sides, the back frames (31, 32) on both sides being connected by the link assembly (33) capable of being folded laterally, the link assembly (33) including a first link (331) and a second link (332) intersecting the first link (331) and rotatably connected at the intersection; one end of the first connecting rod (331) is rotatably connected with a second upper backrest rod (321) in the upper backrest rods (311, 321), and the other end of the first connecting rod (331) is rotatably connected with a first lower backrest rod (312) in the lower backrest rods (312, 322); one end of the second connecting rod (332) is rotatably connected with a second lower backrest rod (322) in the lower backrest rods (312, 322), and the other end of the second connecting rod (332) is rotatably connected with a first upper backrest rod (311) in the upper backrest rods (311, 321).
10. The stroller of claim 1, wherein: the rear stay bar (116, 126) is rotatably connected with the push rod (113, 123).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810288321.4A CN108482472B (en) | 2018-04-03 | 2018-04-03 | Child cart |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810288321.4A CN108482472B (en) | 2018-04-03 | 2018-04-03 | Child cart |
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| CN108482472A CN108482472A (en) | 2018-09-04 |
| CN108482472B true CN108482472B (en) | 2024-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810288321.4A Active CN108482472B (en) | 2018-04-03 | 2018-04-03 | Child cart |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109625069B (en) * | 2018-12-25 | 2024-02-20 | 中山市新概念儿童用品有限公司 | Baby handcart frame |
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| CN108482472A (en) | 2018-09-04 |
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