CN107933673A - Go-cart for double child - Google Patents
Go-cart for double child Download PDFInfo
- Publication number
- CN107933673A CN107933673A CN201711236443.0A CN201711236443A CN107933673A CN 107933673 A CN107933673 A CN 107933673A CN 201711236443 A CN201711236443 A CN 201711236443A CN 107933673 A CN107933673 A CN 107933673A
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- Prior art keywords
- pivot
- frame
- rod
- push rod
- bracket
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- 230000007246 mechanism Effects 0.000 claims abstract description 62
- 230000000712 assembly Effects 0.000 claims description 16
- 238000000429 assembly Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects 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
- B62B7/008—Carriages for children; Perambulators, e.g. dolls' perambulators for two or more children
-
- 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
-
- 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
-
- 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
- B62B9/10—Perambulator bodies; Equipment therefor
- B62B9/102—Perambulator bodies; Equipment therefor characterized by details of the seat
-
- 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
- B62B2205/003—Hand-propelled vehicles or sledges being foldable or dismountable when not in use with actuation mechanisms which drive the folding or unfolding operation
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Child & Adolescent Psychology (AREA)
- General Health & Medical Sciences (AREA)
- Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)
Abstract
The invention discloses a kind of go-cart for double child, it simplifies folding operation step, and folding volume is small.Including：Fore-stock, front seats mechanism are arranged on fore-stock；After-poppet；Upper connecting rod, two components in the bottom of the upper end of fore-stock, the upper end of after-poppet and upper connecting rod rotate connection, at least one connection that rotates in the 3rd component and both of the aforesaid component；The upper end rotation connection of upper push-rod, lower part and upper connecting rod；The bottom rotation connection of lower push-rod, upper end and upper push-rod, lower part and after-poppet rotation connection；Link assembly, the back link being rotatablely connected by the front rod and after-poppet that are rotatablely connected with fore-stock form, the rearward end of front rod and the front end rotation connection of back link；The bottom of lower push-rod is connected with link assembly；Front seats mechanism includes front stall bar and front stall joint element for bar, front stall bar and fore-stock rotation connection, front stall joint element for bar and the rotation connection of front stall bar, and front stall joint element for bar and link assembly rotate connection.
Description
Technical Field
The invention belongs to the field of children products, and particularly relates to a double-person stroller.
Background
At present, the structure of a double stroller is various. A common double stroller includes a frame, front and rear wheel assemblies mounted below the frame, and a seat mechanism connected to the frame. To facilitate a two-person ride, the seat mechanism typically includes a front seat mechanism and a rear seat mechanism disposed in tandem on the frame. Most of the existing double-person pushchairs have larger folding volume and more complicated folding operation, and can be folded by multi-step operation.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a double stroller, which simplifies the folding operation and is convenient to fold.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a double children's barrow comprises a frame with an unfolding state and a folding state, a front wheel assembly, a rear wheel assembly, a front seat mechanism, a rear seat mechanism and a locking mechanism for locking the frame in the unfolding state, wherein the frame comprises two side brackets which are respectively positioned at the left side and the right side;
each of the side brackets includes:
the front wheel assembly is mounted at the lower part of the front bracket, the front seat mechanism is arranged on the front bracket, and the rear seat mechanism is arranged on the frame at a position behind the front seat mechanism;
the lower part of the rear bracket is provided with the rear wheel assembly;
two parts of the upper end part of the front bracket, the upper end part of the rear bracket and the lower end part of the upper connecting rod are rotationally connected, and the third part is rotationally connected with at least one of the two parts;
the lower part of the upper push rod is rotationally connected with the upper end part of the upper connecting rod through a first pivot;
the upper end part of the lower push rod is rotatably connected with the lower end part of the upper push rod through a second pivot, and the lower part of the lower push rod is rotatably connected with the rear support through a third pivot; and
the connecting rod assembly is connected between the front bracket and the rear bracket and comprises a front connecting rod and a rear connecting rod, the front connecting rod is rotatably connected with the front bracket through a fourth pivot, the rear connecting rod is rotatably connected with the rear bracket through a fifth pivot, and the rear end of the front connecting rod is rotatably connected with the front end of the rear connecting rod through a sixth pivot; the lower end part of the lower push rod is connected with the connecting rod assembly to drive the front connecting rod and the rear connecting rod to mutually draw close or unfold;
the front seat mechanism comprises a front seat rod and a front seat rod connecting piece, the front seat rod is rotatably connected with the front support through an eleventh pivot, the upper end of the front seat rod connecting piece is rotatably connected with the rear end of the front seat rod through a twelfth pivot, and the lower end of the front seat rod connecting piece is rotatably connected with the connecting rod assembly through a thirteenth pivot.
In some embodiments, the lower end of the front seat link and the front link are rotatably connected by the thirteenth pivot, and the front bracket, the front seat link, and the front link form a four-bar linkage; the lower end part of the lower push rod is connected with the rear connecting rod through a push rod connecting piece, and the rear support, the lower push rod, the push rod connecting piece and the rear connecting rod form a four-bar mechanism.
In some embodiments, one end of the push rod link and the rear link are pivotally connected by a seventh pivot, the other end and the lower end of the lower push rod are pivotally connected by an eighth pivot, and the third pivot is located between the second pivot and the eighth pivot. Preferably, the seventh pivot is located before the eighth pivot. More preferably, when the frame is in the unfolded state, the center line of the front link, the center line of the rear link, and the center line of the push rod connector extend in the front-rear direction and are parallel to each other, and a triangular structure is formed among the lower push rod, the rear link, and the rear bracket.
In some embodiments, the lower end of the lower push rod is rotatably and slidably connected to the rear link.
In some embodiments, when the frame is in the folded state, the rear end portion of the front link, the front end portion of the rear link, the lower end portion of the lower push rod, the upper end portion of the upper push rod, and the upper end portion of the rear bracket are brought closer to each other; the lower end part of the front bracket, the front end part of the front connecting rod, the rear end part of the rear connecting rod, the upper end part of the upper connecting rod, the upper end part of the lower push rod, the lower end part of the upper push rod and the lower end part of the rear bracket are mutually closed.
In some embodiments, the upper end of the rear bracket has a rear bracket connection member, the front bracket and the front portion of the rear bracket connection member are pivotally connected by a ninth pivot, and when the frame is in the unfolded state, a connection line of the fourth pivot and the ninth pivot of the same side bracket forms an included angle α with a horizontal plane, and the included angle α is smaller than 45 °.
In some embodiments, the front bracket includes a front portion extending obliquely and an extension portion extending from the front portion and bent backward, the front wheel assembly is disposed on the front portion, the extension portion and the rear bracket connecting member are rotatably connected by the ninth pivot, and the extension portion extends horizontally in a front-rear direction of the frame when the frame is in the unfolded state; when the frame is in a folded state, the rear support connecting piece is in a horizontal state.
In some embodiments, the distance between the front wheel assemblies on both sides is greater than the distance between the rear wheel assemblies on both sides, and the rear wheel assemblies on both sides are received between the front wheel assemblies on both sides when the frame is in the folded state.
In some embodiments, the axes of the first pivot, the second pivot, the third pivot, the fourth pivot, the fifth pivot, the sixth pivot, the eleventh pivot, the twelfth pivot, and the thirteenth pivot are parallel to each other.
In some embodiments, the rear seat mechanism includes a first rear seat lever, a second rear seat lever slidably coupled to the first rear seat lever in the front-rear direction, the first rear seat lever being rotatably coupled to the rear bracket by a tenth pivot, and the second rear seat lever being rotatably coupled to the lower push lever by a fourteenth pivot. Preferably, the second rear seat rod is slidably inserted into the first rear seat rod in the front-rear direction and is capable of extending and contracting with the folding and unfolding of the frame.
In combination with the above, the invention adopts the above technical scheme, and has the following advantages compared with the prior art:
the folding operation steps are simplified, the push rod is pressed forwards and downwards after unlocking, the side support can be folded, the front seat rod can be folded along with the folding of the side support, the folding of the whole vehicle is realized, the folding can be completed quickly, and the folding is convenient; and the volume of the double stroller is small after being folded.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 shows a side view of a double stroller according to the invention in a deployed state;
fig. 2 shows a perspective view of a double stroller according to the invention in a deployed state;
fig. 3 shows a side view of a double stroller according to the invention during folding;
fig. 4 shows a perspective view of a double stroller according to the invention during folding;
fig. 5 shows a side view of a double stroller according to the invention in a folded position;
fig. 6 shows a perspective view of a double stroller according to the invention in a folded state.
Wherein,
1. a side bracket; 11. a front bracket; 11a, a front portion; 11b, an extension section; 12. a rear bracket; 120. a rear bracket connection; 13. an upper connecting rod; 130. an upper link connecting member; 14. a push rod is arranged; 15. a lower push rod; 16. a push rod connector; 17. a rear connecting rod; 18. a front link;
101. a first pivot; 102. a second pivot; 103. a third pivot; 104. a fourth pivot; 105. a fifth pivot; 106. a sixth pivot; 107. a seventh pivot; 108. an eighth pivot; 109. a ninth pivot; 110. a tenth pivot; 111. an eleventh pivot shaft; 112. a twelfth pivot; 113. a thirteenth pivot; 114. a fourteenth pivot;
2. a front wheel assembly;
3. a rear wheel assembly;
4. a front seat mechanism; 41. a front seat post; 42. a front seat post attachment;
5. a rear seat mechanism; 51. a first backseat lever; 52. a second backseat lever;
6. a locking mechanism; 61. a locking member.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the invention may be more readily understood by those skilled in the art. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The terms of orientation used herein are defined according to the usual viewing perspective of a person skilled in the art of the orientation of the child dining chair in its unfolded state.
This embodiment provides a two-person stroller, as shown in fig. 1-6, comprising a frame having an unfolded state and a folded state, a front wheel assembly 2, a rear wheel assembly 3, a front seat mechanism 4 and a rear seat mechanism 5 arranged in tandem, and a locking mechanism 6 for locking the frame in the unfolded state. The frame comprises two side brackets 1 which are respectively positioned at the left side and the right side. Each side bracket 1 includes a front bracket 11, a rear bracket 12, an upper link 13, an upper push rod 14, a lower push rod 15, and a link assembly, respectively. The individual components of each side bracket 1 will be described one by one.
The front wheel assembly 2 is arranged at the lower part of the front bracket 11, the front seat mechanism 4 is arranged on the front bracket 11, and the rear seat mechanism 5 is arranged at the position of the frame behind the front seat mechanism 4. In the embodiment, the front bracket 11 includes a front portion 11a extending obliquely and an extending portion 11b extending from the upper end of the front portion 11a and bending backwards, and the front wheel assembly 2 is specifically disposed on the front portion 11 a. The extending portion 11b extends horizontally in the front-rear direction of the vehicle frame, that is, the extending portion 11b is disposed substantially horizontally when the vehicle frame is in the deployed state. The front seat mechanism 4 is specifically provided on the front portion 11a of the front bracket 11.
The lower part of the rear bracket 12 is provided with a rear wheel assembly 3. In this embodiment, the distance between the rear wheel assemblies 3 on both sides is smaller than the distance between the front wheel assemblies 2 on both sides, so that the rear wheel assemblies 3 on both sides can be accommodated between the front wheel assemblies 2 on both sides after folding, and the volume after folding is reduced. Therefore, in a preferred embodiment, the lower end of the rear bracket 12 is bent (inwardly) toward the other side bracket 1 such that the distance between the lower ends of the rear brackets 12 on the left and right sides of the vehicle body frame is smaller than the distance between the upper ends thereof.
Two of the upper end of the front bracket 11, the upper end of the rear bracket 12, and the lower end of the upper link 13 are rotatably connected, and the third is rotatably connected to at least one of the two. That is, the upper end of the front bracket 11, the upper end of the rear bracket 12 and the lower end of the upper link 13 are coaxially and rotatably connected or are connected to each other in a pairwise opposite manner; for example, two of the upper end of the front bracket 11, the upper end of the rear bracket 12 and the lower end of the upper link 13 are pivotally connected by one pivot, and the remaining one of the two is pivotally connected by the other pivot, as shown in fig. 1 to 6. In the embodiment, a rear frame connector 120 is formed at the upper end of the rear frame 12, and the rear frame connector 120 is fixedly connected with or integrally formed with the other parts of the rear frame 12; the extension 11b of the front bracket 11 is pivotally connected to the front portion of the rear bracket link 120 by a ninth pivot 109, and the upper link 13 is pivotally connected to the rear portion of the rear bracket link 120 by a tenth pivot 110.
The lower portion of the upper push rod 14 and the upper end portion of the upper link 13 are rotatably connected by a first pivot 101.
The upper end portion of the lower push rod 15 and the lower end portion of the upper push rod 14 are rotatably connected by a second pivot 102, the second pivot 102 is located below the first pivot 101, and the lower portion of the lower push rod 15 and the rear bracket 12 are rotatably connected by a third pivot 103.
The link assemblies may be coupled between the front bracket 11 and the rear bracket 12 to be drawn close to or spread apart from each other. The link assembly is composed of a front link 18 whose front end portion is rotatably connected to the front portion 11a of the front bracket 11 by a fourth pivot 104, and a rear link 17 whose rear end portion is rotatably connected to the rear bracket 12 by a fifth pivot 105, and the rear end portion of the front link 18 and the front end portion of the rear link 17 are rotatably connected by a sixth pivot 106. The third pivot 103 on the rear bracket 12 is located between the tenth pivot 110 and the fifth pivot 105. The lower end of the lower push rod 15 is connected to the link assembly to move the front link 18 and the rear link 17 toward and away from each other, and the connection is located below the third pivot 103.
Specifically, in the present embodiment, the lower end portion of the lower push rod 15 is connected to the link assembly through a push rod connector 16, one end portion of the push rod connector 16 is rotatably connected to the link assembly through a seventh pivot 107, and the other end portion is rotatably connected to the lower end portion of the lower push rod 15 through an eighth pivot 108. The third pivot 103 on the lower push rod 15 is located between the second pivot 102 and the eighth pivot 108. As shown in fig. 1, the one end of the push rod connection member 16 is connected to the rear link 17 via a seventh pivot 107, and the seventh pivot 107 is located before the eighth pivot 108. That is, the front bracket 11 and the rear bracket 12 are drawn together or unfolded with each other by the four-bar linkage formed between the lower push rod 15, the push rod link 16, the rear link 17, and the rear bracket 12.
Regarding the manner in which the lower push rod 15 is connected to the linkage assembly, in an alternative embodiment, the lower end of the lower push rod 15 is rotatably and slidably connected to the rear linkage 17. For example, the lower end portion of the lower push rod 15 is rotatably and slidably connected to the rear link 17 via a slide sleeve, the slide sleeve is slidably provided on the rear link 17 in the extending direction of the rear link 17, and the slide sleeve is further rotatably connected to the lower end portion of the lower push rod 15, thereby constituting a crank block mechanism instead of the four-link mechanism. When the folding chair is folded, the lower push rod 15 overturns to drive the sliding sleeve to move, and the rear connecting rod 17 overturns upwards under the action of the sliding sleeve and is close to the front connecting rod 18.
It should also be noted that the connection of the lower push rod 15 and the push rod connection 16 between the rear link 17 and the rear bracket 12 also has the effect of increasing the stability of the frame. In a preferred form, the centerline of the front link 18, the centerline of the rear link 17, and the centerline of the pushrod coupling 16 each extend in the fore-aft direction and are parallel to each other when the frame is in the deployed state. That is, when the frame is unfolded, the push rod connector 16 and the rear link 17 are overlapped, so that a triangular structure is formed among the lower push rod 15, the rear link 17 and the rear bracket 12, the stability of the frame in the unfolded state is enhanced, and the frame is stabilized in the unfolded state.
As shown in fig. 1, when the vehicle frame is in the unfolded state, an included angle α is formed between the connecting line of the fourth pivot 104 and the ninth pivot 109 of the same side bracket 1 and the horizontal plane, an included angle β is formed between the connecting line of the fourth pivot 104 and the ninth pivot 109 and the connecting line of the ninth pivot 109 and the fifth pivot 105, the included angle α is smaller than 45 degrees, and the included angle β is larger than 90 degrees, so that the front bracket 11 and the rear bracket 12 are large in size in the front-rear direction, and sufficient space is provided for arranging the front seat mechanism 4 and the rear seat mechanism 5.
As shown in fig. 5 and 6, when the frame is in the folded state, the rear bracket connecting member 120 is in a horizontal state, the upper end portion of the upper push rod 14 and the rear bracket connecting member 120 are substantially flat, and the rear end portion of the front link 18, the front end portion of the rear link 17, the lower end portion of the lower push rod 15 and the rear bracket connecting member 120 are close together; the front part 11a of the front bracket 11 is in a vertical state, and the upper connecting rod 13, the upper push rod 14 and the lower push rod 15 are also approximately vertically close behind the rear bracket 12; the rear wheel components 3 on the two sides are accommodated between the front wheel components 2 on the two sides; the upper end portion of the upper link 13, the upper end portion of the lower push rod 15, the lower end portion of the lower push rod 15, and the rear wheel assembly 3 are brought close together.
It should be noted that the front seat mechanism 4 in this embodiment can be folded as the side frame 1 is folded, which simplifies the folding process. Wherein, the front seat mechanism 4 comprises a front seat rod 41 for forming a front seat, the front seat rod 41 and the front bracket 11 are rotatably connected by an eleventh pivot 111, and a rear end portion of the front seat rod 41 is connected with the link assembly to be rotated by the link assembly. Specifically, the front seat mechanism 4 further includes a front seat link 42, an upper end portion of the front seat link 42 and a rear end portion of the front seat link 41 are rotatably connected by a twelfth pivot 112, and a lower end portion of the front seat link 42 and the front link 18 are rotatably connected by a thirteenth pivot 113, thereby constituting a four-bar linkage. The fourth pivot 104, the thirteenth pivot 113, the sixth pivot 106, the seventh pivot 107, the eighth pivot 108 and the fifth pivot 105 on the same side of the frame are sequentially arranged at intervals along the direction parallel to the central lines of the front connecting rod 18 and the rear connecting rod 17. The eleventh pivot 111 on the front bracket 11 is located between the ninth pivot 109 and the fourth pivot 104.
The rear seat mechanism 5 includes a first rear seat lever 51 for forming a rear seat and a second rear seat lever 52 slidably connected to the first rear seat lever 51 in the front-rear direction, the first rear seat lever 51 is pivotally connected to the rear bracket 12 by a tenth pivot 110, and the second rear seat lever 52 is pivotally connected to the lower push lever 15 by a fourteenth pivot 114. Specifically, second rear seat post 52 is slidably inserted into first rear seat post 51 in the front-rear direction, and the length of second rear seat post 52 sliding out of second rear seat post 52 increases when the frame is in the folded state. When the frame is folded and unfolded, the first rear seat rod 51 and the second rear seat rod 52 slide relative to each other to extend and retract.
The lock mechanism 6 in this embodiment is provided between the upper end portion of the upper link 13 and the lower end portion of the upper push rod 14. The lock mechanism 6 specifically includes a lock member 61 provided on the lower end portion of the upper push rod 14, and the lock member 61 is detachably connected to the upper end portion of the upper link 13. When the locking piece 61 is separated from the upper connecting rod 13, the locking mechanism 6 is unlocked, and the frame can be folded; when the lock 61 is connected to the upper link 13, the lock mechanism 6 locks the frame in the unfolded state.
The lower ends of the front brackets 11 of the two side brackets 1 are directly connected to form a U-shaped structure; the lower end parts of the rear brackets 12 of the two side brackets 1 are connected through a cross rod assembly; the upper ends of the push-up rods 14 of the two side brackets 1 are directly connected or connected through an intermediate part to form a half-frame structure. The front seat mechanism 4 has a half-frame structure in which the front ends of two front seat rods 41 provided on the front brackets 11 on both sides are connected directly or through an intermediate member. The front end portions of the two first rear seat levers 51 of the rear seat mechanism 5 respectively provided on the two side rear brackets 12 are directly connected or connected via an intermediate member to constitute a half-frame structure, and the rear end portions of the two second rear seat levers 52 of the rear seat mechanism 5 respectively provided on the two side down links 15 are directly connected or connected via an intermediate member to constitute a half-frame structure.
The respective axial lines of the first pivot 101, the second pivot 102, the third pivot 103, the fourth pivot 104, the fifth pivot 105, the sixth pivot 106, the seventh pivot 107, the eighth pivot 108, the ninth pivot 109, the tenth pivot 110, the eleventh pivot 111, the twelfth pivot 112, the thirteenth pivot 113 and the fourteenth pivot 114 of each side bracket 1 are parallel to each other and horizontally extend along the left-right direction of the vehicle frame. The axes of the corresponding pivots of the two side brackets 1 preferably coincide with each other, for example, the axes of the first pivots 101 on the two sides coincide with each other; the axes of the second pivots 102 on both sides coincide with each other, and so on. This allows the volume of the double stroller to be further reduced after folding.
The folding principle of the double stroller is as follows:
in each side bracket 1, the upper push rod 14, the lower push rod 15, the rear bracket 12 and the upper link 13 form a first four-bar linkage mechanism among a first pivot 101, a second pivot 102, a third pivot 103 and a tenth pivot 110; the rear bracket 12 and the lower push rod 15 form a link sliding bush mechanism between the tenth pivot 110, the third pivot 103, the fifth pivot 105, and the first rear seat rod 51 and the second rear seat rod 52; the front bracket 11, the rear bracket 12, the rear link 17 and the front link 18 form a second four-bar linkage mechanism among the ninth pivot 109, the fifth pivot 105, the sixth pivot 106 and the fourth pivot 104; the rear bracket 12, the rear connecting rod 17, the push rod connecting piece 16 and the lower push rod 15 form a third four-bar linkage mechanism among a third pivot 103, a fifth pivot 105, a seventh pivot 107 and an eighth pivot 108; the front bracket 11, the front seat post 41, the front seat post connecting piece 42 and the front connecting rod 18 form a fourth four-bar linkage mechanism among an eleventh pivot 111, a twelfth pivot 112, a thirteenth pivot 113 and a fourth pivot 104; when the folding mechanism is folded, the upper connecting rod 13 and the upper push rod 14 are unlocked, the upper push rod 14 is pushed forwards and downwards, the first four-bar linkage mechanism starts to be folded, the second four-bar linkage mechanism is driven to be folded, meanwhile, the length of the second rear seat rod 52 extending out of the first rear seat rod 51 is increased, and the third four-bar linkage mechanism and the fourth four-bar linkage mechanism are also folded.
As shown in fig. 1 and 2, when the vehicle frame is in the unfolded state, the locking mechanism 6 locks the upper link 13 and the upper push rod 14, the extension portion 11b of the front bracket 11 is substantially horizontal, the center line of the front link 18, the center line of the rear link 17, and the center line of the push rod link 16 extend in the front-rear direction and are parallel to each other, and the fourth pivot 104, the thirteenth pivot 113, the sixth pivot 106, the seventh pivot 107, the eighth pivot 108, and the fifth pivot 105 on the same side of the vehicle frame are sequentially arranged at intervals in the direction parallel to the center lines of the front link 18 and the rear link 17.
As shown in fig. 3 and 4, the folding process of the double stroller is as follows:
the locking mechanism 6 is unlocked; pushing the upper push rod 14 forward and downward in the direction indicated by the arrow in fig. 3 causes the lower push rod 15 to turn around the third pivot 103; with the upward turning of the lower end of the upper push rod 14 around the third pivot 103, the push rod connecting piece 16 is firstly driven to turn around the seventh pivot 107, and then the rear connecting rod 17 is driven by the push rod connecting piece 16 to turn upwards around the fifth pivot 105, so that the rear end part of the front connecting rod 18 and the front end part of the rear connecting rod 17 are close to the rear bracket connecting piece 120, the front end part of the front connecting rod 18 and the rear end part of the rear connecting rod 17 are close to each other, and the front bracket 11 and the rear bracket 12 are driven to be close to each other, and the front wheel assembly 2 and the rear wheel assembly 3 are driven to be close; meanwhile, as the front end portion of the front link 18 and the rear end portion of the rear link 17 approach each other, the front carrier 11 and the front link 18 are also drawn close to each other, and thus the front seat link 41 and the front seat link 42 are also drawn close to each other so that the rear end portion of the front seat link 41 is drawn close to the rear carrier link 120, and the front seat link 41 is turned around the eleventh pivot 111 toward the front carrier 11; as the push-down lever 15 is flipped about the third pivot 103, the second rear seat lever 52 is stretched so that the length of the slide-out first rear seat lever 51 increases.
As shown in fig. 5 and 6, when the frame is in the folded state, the rear bracket connecting member 120 is substantially horizontal, and the rear end portion of the front seat bar 41, the rear end portion of the front link 18, the front end portion of the rear link 17, the rear end portion of the push rod connecting member 16, the lower end portion of the lower push rod 15, the upper end portion of the upper push rod 14 and the rear bracket connecting member 120 are close to each other, wherein the upper end portion of the upper push rod 14 and the rear bracket connecting member 120 are substantially flat; the lower end of the front bracket 11 and the lower end of the rear bracket 12 are close to each other to make the front wheel assembly 2 and the rear wheel assembly 3 close to each other, the rear wheel assemblies 3 on both sides are accommodated between the front wheel assemblies 2 on both sides, the front end of the front seat rod 41, the front end of the front connecting rod 18, the rear end of the rear connecting rod 17, the lower end of the upper push rod 14, the upper end of the upper connecting rod 13, the upper end of the lower push rod 15, the front wheel assembly 2 and the rear wheel assembly 3 are close to each other, wherein both the front wheel assembly 2 and the rear wheel assembly 3 can contact the ground; the front portion 11a of the front bracket 11, the upper link 13, and the upper push rod 14 are substantially vertical.
As can be seen from the above description, on one hand, the folding operation steps of the double stroller according to the present invention are simplified, and the side brackets and the front seat mechanism can be folded and folded by pressing the push rod 14 forward and downward after unlocking, so that the folding of the entire stroller is realized, and the folding can be completed quickly; on the other hand, the double stroller according to the invention is small after folding. In addition, the double stroller according to the present invention has better stability in the unfolded state.
The above-mentioned embodiments are merely illustrative of the technical ideas and features of the present invention, and are preferred embodiments, so that those skilled in the art can understand the contents of the present invention and implement the present invention, and the protection scope of the present invention is not limited thereby.
Claims (10)
1. A double children's barrow comprises a frame with an unfolding state and a folding state, a front wheel assembly, a rear wheel assembly, a front seat mechanism, a rear seat mechanism and a locking mechanism for locking the frame in the unfolding state, wherein the frame comprises two side brackets which are respectively positioned at the left side and the right side;
characterized in that each side bracket comprises:
the front wheel assembly is mounted at the lower part of the front bracket, the front seat mechanism is arranged on the front bracket, and the rear seat mechanism is arranged on the frame at a position behind the front seat mechanism;
the lower part of the rear bracket is provided with the rear wheel assembly;
two parts of the upper end part of the front bracket, the upper end part of the rear bracket and the lower end part of the upper connecting rod are rotationally connected, and the third part is rotationally connected with at least one of the two parts;
the lower part of the upper push rod is rotationally connected with the upper end part of the upper connecting rod through a first pivot;
the upper end part of the lower push rod is rotatably connected with the lower end part of the upper push rod through a second pivot, and the lower part of the lower push rod is rotatably connected with the rear support through a third pivot; and
the connecting rod assembly is connected between the front bracket and the rear bracket and comprises a front connecting rod and a rear connecting rod, the front connecting rod is rotatably connected with the front bracket through a fourth pivot, the rear connecting rod is rotatably connected with the rear bracket through a fifth pivot, and the rear end of the front connecting rod is rotatably connected with the front end of the rear connecting rod through a sixth pivot; the lower end part of the lower push rod is connected with the connecting rod assembly to drive the front connecting rod and the rear connecting rod to mutually draw close or unfold;
the front seat mechanism comprises a front seat rod and a front seat rod connecting piece, the front seat rod is rotatably connected with the front support through an eleventh pivot, the upper end of the front seat rod connecting piece is rotatably connected with the rear end of the front seat rod through a twelfth pivot, and the lower end of the front seat rod connecting piece is rotatably connected with the connecting rod assembly through a thirteenth pivot.
2. The double stroller of claim 1, wherein the lower end of the front seat bar linkage and the front link are pivotally connected by the thirteenth pivot, and the front frame, the front seat bar linkage, and the front link form a four-bar linkage; the lower end part of the lower push rod is rotationally connected with the rear connecting rod through a push rod connecting piece, and the rear support, the lower push rod, the push rod connecting piece and the rear connecting rod form a four-bar mechanism.
3. The double stroller as recited in claim 2, wherein one end of the push rod link is pivotally connected to the rear link by a seventh pivot and the other end of the push rod link is pivotally connected to the lower end of the lower push rod by an eighth pivot, the third pivot being located between the second pivot and the eighth pivot.
4. The double stroller of claim 1, wherein the lower end of the lower push bar is rotatably and slidably connected to the rear link.
5. The double stroller of claim 1, wherein the rear end of the front link, the front end of the rear link, the lower end of the lower push rod, the upper end of the upper push rod and the upper end of the rear bracket are brought closer together when the frame is in the folded position; the lower end part of the front bracket, the front end part of the front connecting rod, the rear end part of the rear connecting rod, the upper end part of the upper connecting rod, the upper end part of the lower push rod, the lower end part of the upper push rod and the lower end part of the rear bracket are mutually closed.
6. The double stroller of claim 1, wherein the upper end of the rear frame has a rear frame connector, the front frame and the front portion of the rear frame connector are pivotally connected by a ninth pivot, and when the stroller frame is in the unfolded state, a line connecting the fourth pivot and the ninth pivot of the same side frame forms an included angle α with a horizontal plane, and the included angle α is less than 45 °.
7. The double stroller of claim 6, wherein the front frame comprises a front portion extending obliquely and an extension portion extending from the front portion and bent backward, the front wheel assembly is disposed on the front portion, the extension portion and the rear frame connecting member are rotatably connected by the ninth pivot, and the extension portion extends horizontally in a front-rear direction of the frame when the frame is in the unfolded state; when the frame is in a folded state, the rear support connecting piece is in a horizontal state.
8. The double stroller as recited in claim 1, wherein the spacing between the front wheel assemblies on each side is greater than the spacing between the rear wheel assemblies on each side, and wherein the rear wheel assemblies on each side are received between the front wheel assemblies on each side when the stroller frame is in the collapsed position.
9. The double stroller of claim 1, wherein the axes of the first, second, third, fourth, fifth, sixth, eleventh, twelfth and thirteenth pivot axes are parallel to each other.
10. The double stroller of claim 1, wherein the rear seat mechanism comprises a first rear seat bar, a second rear seat bar slidably connected to the first rear seat bar in a fore-and-aft direction, the first rear seat bar being pivotally connected to the rear frame by a tenth pivot, the second rear seat bar being pivotally connected to the lower push bar by a fourteenth pivot.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711236443.0A CN107933673B (en) | 2017-11-30 | 2017-11-30 | Go-cart for double child |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711236443.0A CN107933673B (en) | 2017-11-30 | 2017-11-30 | Go-cart for double child |
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| CN107933673A true CN107933673A (en) | 2018-04-20 |
| CN107933673B CN107933673B (en) | 2019-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711236443.0A Active CN107933673B (en) | 2017-11-30 | 2017-11-30 | Go-cart for double child |
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| CN108583670A (en) * | 2018-05-07 | 2018-09-28 | 好孩子儿童用品有限公司 | Children trolley |
| CN109278834A (en) * | 2018-10-25 | 2019-01-29 | 好孩子儿童用品有限公司 | Double stroller |
| WO2019104628A1 (en) * | 2017-11-30 | 2019-06-06 | 好孩子儿童用品有限公司 | Double stroller |
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| US20040195868A1 (en) * | 2001-11-14 | 2004-10-07 | Link Treasure Limited | Adjustable serving tray |
| CN203996356U (en) * | 2014-06-23 | 2014-12-10 | 好孩子儿童用品有限公司 | Double go-cart |
| CN104554410A (en) * | 2014-12-26 | 2015-04-29 | 好孩子儿童用品有限公司 | Re-foldable double trolley |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2019104628A1 (en) * | 2017-11-30 | 2019-06-06 | 好孩子儿童用品有限公司 | Double stroller |
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| CN108583670B (en) * | 2018-05-07 | 2024-09-24 | 好孩子儿童用品有限公司 | Strollers |
| CN109278834A (en) * | 2018-10-25 | 2019-01-29 | 好孩子儿童用品有限公司 | Double stroller |
| CN109278834B (en) * | 2018-10-25 | 2024-06-04 | 好孩子儿童用品有限公司 | Double-person trolley |
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| Publication number | Publication date |
|---|---|
| CN107933673B (en) | 2019-10-11 |
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