CN113548105B - Children's trailer - Google Patents
Children's trailer Download PDFInfo
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- CN113548105B CN113548105B CN202110753059.8A CN202110753059A CN113548105B CN 113548105 B CN113548105 B CN 113548105B CN 202110753059 A CN202110753059 A CN 202110753059A CN 113548105 B CN113548105 B CN 113548105B
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- Prior art keywords
- connecting rod
- frame
- rod
- vertical
- link
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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
- B62B7/00—Carriages for children; Perambulators, e.g. dolls' perambulators
- B62B7/04—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor
- B62B7/06—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable
- B62B7/08—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable in the direction of, or at right angles to, the wheel axis
- B62B7/083—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable in the direction of, or at right angles to, the wheel axis the wheel axes being moved from each other during folding
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)
Abstract
The invention discloses a children trailer, which comprises a frame in an unfolded state and a folded state, and a front wheel assembly and a rear wheel assembly which are arranged at the bottom of the frame, wherein the frame comprises two groups of side frame assemblies which are respectively arranged at the left side and the right side, a front connecting frame which is arranged at the front parts of the two groups of side frame assemblies, and a rear connecting frame which is arranged between the rear parts of the two groups of side frame assemblies, and the side frame assemblies comprise: the front wall frame comprises a first connecting rod and a second connecting rod which respectively extend along the front and back directions; the rear surrounding frame comprises a third connecting rod and a fourth connecting rod which extend in the front-rear direction respectively, the connecting rods move upwards in the process that the frame is converted from an unfolded state to a folded state, and the first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod are folded between the front upright rod and the rear upright rod in the front-rear direction. The child trailer has a simple structure, can be folded, occupies a small space after being folded, and is convenient to store and transport.
Description
Technical Field
The invention relates to a child trailer.
Background
Existing pushchairs are mostly arranged to be foldable in order to reduce the storage space for storage and transport. However, due to the addition of the folding mechanism, the main frame of the baby carriage is often very complex, and in the normal use process of the baby carriage, the fault rate and the operation burden are increased due to the complex frame structure. Thus, it is the direction of endeavor of those skilled in the art to design and manufacture a child car that is foldable and compact in structure.
Disclosure of Invention
The invention aims to provide a novel children trailer.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a children's trailer, includes the frame that has expansion state and fold condition, locates the front wheel subassembly and the rear wheel subassembly of frame bottom, the frame is including dividing two sets of side frame subassemblies, the setting of locating the left and right sides two sets of the anterior preceding link of side frame subassembly, setting are two sets of rear link between the side frame subassembly rear portion, the frame is under the expansion state, the side frame subassembly includes:
the front upright post extends along the vertical direction;
a rear upright rod extending in the up-down direction;
a connecting rod extending in an up-down direction;
the front wall frame comprises a first connecting rod and a second connecting rod which respectively extend along the front-back direction, the first connecting rod is positioned above the second connecting rod, the front part of the first connecting rod and the front part of the second connecting rod are respectively and rotatably connected to the front upright rod, and the rear part of the first connecting rod and the rear part of the second connecting rod are respectively and rotatably connected to the connecting rods;
the rear surrounding frame comprises a third connecting rod and a fourth connecting rod which respectively extend along the front-rear direction, the third connecting rod is positioned above the fourth connecting rod, the front part of the third connecting rod and the front part of the fourth connecting rod are respectively and rotatably connected on the connecting rods, the rear part of the third connecting rod and the rear part of the fourth connecting rod are respectively and rotatably connected on the rear upright stanchion,
in the process that the frame is converted from the unfolding state to the folding state, the connecting rod moves upwards, and the first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod are furled between the front upright stanchion and the rear upright stanchion along the front-rear direction.
Preferably, the rear portion of the first link and the front portion of the third link are connected to the upper portion of the connecting rod together to be rotatable about a first rotational axis, and the rear portion of the second link and the front portion of the fourth link are connected to the lower portion of the connecting rod together to be rotatable about a second rotational axis.
Preferably, the first link and the second link are parallel to each other, the third link and the fourth link are parallel to each other, when the frame is in the unfolded state, the first link and the third link extend in the same length direction, and the second link and the fourth link extend in the same length direction.
As a preferred embodiment, each set of the side frame assemblies further comprises:
the front vertical frame extends along the vertical direction, the front vertical frame can be arranged on the front vertical rod in a relatively sliding manner along the vertical direction, and the front wheel assembly is arranged at the lower part of the front vertical frame;
a rear vertical frame extending in the vertical direction, the rear vertical frame being provided on the rear vertical rod so as to be capable of relatively sliding in the vertical direction, the rear wheel assembly being provided at the lower portion of the rear vertical frame,
the sliding motion between the front vertical frame and the front vertical rod is in linkage with the rotating motion of the first connecting rod and the second connecting rod relative to the front vertical rod, and the sliding motion between the rear vertical frame and the rear vertical rod is in linkage with the rotating motion of the third connecting rod and the fourth connecting rod relative to the rear vertical rod.
Further preferably, each group of the side frame assemblies further comprises a front linkage rod and a rear linkage rod, one end of the front linkage rod is rotationally connected to the front vertical frame, the other end of the front linkage rod is rotationally connected to the first connecting rod, one end of the rear linkage rod is rotationally connected to the rear vertical frame, and the other end of the rear linkage rod is rotationally connected to the third connecting rod.
Still further preferably, the front vertical frame is provided with a front sliding sleeve part, the front sliding sleeve part can be sleeved on the front vertical rod in a relatively sliding manner and is positioned above the first connecting rod, and the front linkage rod is rotationally connected to the front sliding sleeve part; the rear vertical frame is provided with a rear sliding sleeve portion, the rear sliding sleeve portion can be sleeved on the rear vertical rod in a relatively sliding mode and is located above the third connecting rod, and the rear linkage rod is rotationally connected to the rear sliding sleeve portion.
Further preferably, the front connecting frame comprises two front connecting rods which are mutually crossed and rotatably connected at the crossed position, the front connecting rods obliquely extend along the vertical direction, the upper parts of the front connecting rods are rotatably connected to the front vertical frame on the side frame assembly on one side, and the lower parts of the front connecting rods are rotatably connected to the lower parts of the front vertical rods on the side frame assembly on the other side;
the rear connecting frame comprises two rear connecting rods which are mutually crossed and rotatably connected at the crossed position, the rear connecting rods extend obliquely in the vertical direction, the upper portions of the rear connecting rods are rotatably connected to one side of the rear vertical frame on the side frame assembly, and the lower portions of the rear connecting rods are rotatably connected to the other side of the rear vertical rod on the side frame assembly.
Still further preferably, the two front connecting rods are rotatably connected through a front rotating shaft, the child trailer further comprises a draw bar and a draw bar seat, the draw bar seat is arranged on the front rotating shaft, the lower portion of the draw bar is rotatably connected to the draw bar seat, and a positioning structure for positioning the draw bar is further arranged on the draw bar seat.
Still further preferably, the draw bar seat is arranged at the front end part of the front rotating shaft, and a limiting structure for limiting the relative opening angle of the two front connecting rods is further arranged on the rear side part of the draw bar seat.
In a preferred embodiment, the front connecting frame and the rear connecting frame are arranged between the side frame assemblies on both sides in a foldable manner in the left-right direction.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the child trailer has a simple structure, can be folded, occupies a small space after being folded, and is convenient to store and transport.
Drawings
FIG. 1 is a rear perspective view of the child trailer of the present invention in a deployed position;
FIG. 2 is a schematic side view of the child trailer of the present invention in a deployed position;
FIG. 3 is a schematic three-dimensional view of the child trailer of the present invention in an expanded state;
FIG. 4 is a schematic top view of the child trailer of the present invention in a deployed position;
FIG. 5 is a schematic structural view of a front upright and a front vertical frame and a rear upright and a rear vertical frame in the children trailer;
FIG. 6 is a schematic structural view of the child trailer of the present invention, wherein the space between the front upright stanchion, the front vertical frame and the front connecting frame, and the space between the rear upright stanchion, the rear vertical frame and the rear connecting frame are shown;
FIG. 7 is a schematic side view of the child trailer of the present invention in a deployed position with the tow bar disengaged from the latch slot;
fig. 8 isbase:Sub>A cross-sectional view of the child trailer of the present invention corresponding tobase:Sub>A-base:Sub>A in fig. 7, wherein the side frame lock locks the first link relative to the second link.
Fig. 9 isbase:Sub>A schematic cross-sectional view of the child trailer of the present invention corresponding tobase:Sub>A-base:Sub>A of fig. 7 with the first and second links unlocked.
FIG. 10 is a rear perspective view of the child trailer of the present invention during transition from the deployed position to the collapsed position;
FIG. 11 is a side view of the child trailer of the present invention as it transitions from an expanded position to a collapsed position;
FIG. 12 is a three-dimensional schematic view of the child trailer of the present invention during transition from an expanded position to a collapsed position;
FIG. 13 is a schematic top view of the child trailer of the present invention as it transitions from an expanded position to a collapsed position;
FIG. 14 is a rear perspective view of the child trailer of the present invention in a folded position;
FIG. 15 is a side elevational schematic view of the child trailer of the present invention in a folded condition;
FIG. 16 is a three-dimensional schematic view of the child trailer of the present invention in a folded position;
FIG. 17 is a schematic top view of the child trailer of the present invention in a folded position;
wherein: 100. a frame; 200. a front wheel assembly; 300. a rear wheel assembly;
1. a side frame assembly; 11. a front upright rod; 12. a rear upright rod; 13. a connecting rod; 141. a first link; 142. a second link; 151. a third link; 152. a fourth link; 16. a front connecting frame 16a and a front sliding sleeve part; 17. a rear connecting frame; 17a, a rear slip cover portion; 18. a front linkage rod; 19. a rear linkage rod;
2. a front connecting frame; 21. a front link; 22. a front rotating shaft;
3. a rear connecting frame; 31. a rear connecting rod; 32. a rear rotating shaft;
4. a draw bar; 4a, a rotating shaft of the traction rod;
5. a drawbar seat; 51. a positioning structure; 51a, a clamping groove; 52. a limiting structure;
6. an upper rotation limiting piece; 6a, an upper limit part;
7. a lower rotation limiting member; 7a, a lower limiting part; 7b, a lock hole part;
8. a side frame locking member; 8a, a locking portion;
a. a first rotational centerline; b. a second centerline of rotation.
Detailed Description
The technical solution of the present invention is further explained with reference to the drawings and the specific embodiments.
A children's trailer, as shown in fig. 1 to 4, comprises a frame 100 with an unfolded state and a folded state, a front wheel assembly 200 and a rear wheel assembly 300 arranged at the bottom of the frame 100, wherein the frame 100 comprises two sets of side frame assemblies 1 respectively arranged at the left and right sides, a front connecting frame 2 arranged at the front parts of the two sets of side frame assemblies 1, and a rear connecting frame 3 arranged between the rear parts of the two sets of side frame assemblies 1. Wherein, the front connecting frame 2 and the rear connecting frame 3 can be arranged between the side frame components 1 at two sides in a left-right direction in a folding way.
In this embodiment, when the frame 100 is in the unfolded state, the side frame assembly 1 includes: a front upright 11, a rear upright 12, and a connecting rod 13. Specifically, on each side in the left-right direction, when the vehicle frame 100 is in the unfolded state, the front upright 11 is disposed on the front side of the vehicle frame 100, the rear upright 12 is disposed on the rear side of the vehicle frame 100, the connecting rod 13 is disposed between the front upright 11 and the rear upright 12, and the front upright 11, the rear upright 12, and the connecting rod 13 all extend in the up-down direction.
Specifically, on each side in the left-right direction, the rear portion of the first link 141 and the front portion of the third link 151 are connected to the upper portion of the connecting rod 13 so as to be rotatable together about the first rotational axis a, and the rear portion of the second link 142 and the front portion of the fourth link 152 are connected to the lower portion of the connecting rod 13 so as to be rotatable together about the second rotational axis b. When the frame 100 is in the unfolded state, the first link 141 and the third link 151 extend in the same longitudinal direction, and the second link 142 and the fourth link 152 extend in the same longitudinal direction.
In this embodiment, referring to fig. 5, when the frame 100 is in the unfolded state, the side frame assembly 1 further includes: a front upright 16 extending in the vertical direction and a rear upright 17 extending in the vertical direction, the front upright 16 being provided on the front upright 11 so as to be relatively slidable in the vertical direction, and the rear upright 17 being provided on the rear upright 12 so as to be relatively slidable in the vertical direction, on each side in the horizontal direction. Specifically, the front upright frame 16 has a front sliding sleeve portion 16a, the front sliding sleeve portion 16a is relatively slidably fitted over the front upright 11 and positioned above the first link 141, and the rear upright frame 17 has a rear sliding sleeve portion 17a, and the rear sliding sleeve portion 17a is relatively slidably fitted over the rear upright 12 and positioned above the third link 151.
The sliding motion between the front vertical frame 16 and the front vertical rod 11 is linked to the rotational motion of the first link 141 and the second link 142 relative to the front vertical rod 11, and the sliding motion between the rear vertical frame 17 and the rear vertical rod 12 is linked to the rotational motion of the third link 151 and the fourth link 152 relative to the rear vertical rod 12. Specifically, in the present embodiment, as shown in fig. 1 to 4, each set of side frame assemblies 1 further includes a front linkage bar 18 and a rear linkage bar 19. On each side in the left-right direction, one end of the front linkage rod 18 is rotationally connected to the front stand 16 and the other end is rotationally connected to the first connecting rod 141, one end of the rear linkage rod 19 is rotationally connected to the rear stand 17 and the other end is rotationally connected to the third connecting rod 151, specifically, one end of the front linkage rod 18 is rotationally connected to the front sliding sleeve portion 16a and the other end is rotationally connected to the first connecting rod 141; one end of the rear interlocking lever 19 is rotatably connected to the rear slip cover portion 17a and the other end is rotatably connected to the third link 151.
Specifically, in the present embodiment, the front linkage 18 extends in an arc shape from top to bottom and backwards, and when the frame 100 is in the unfolded state, the front portion of the front linkage 18 extends in the same length direction approximately in close contact with the front upright 16, and the rear portion of the front linkage 18 extends in the same length direction approximately in close contact with the first link 141; the rear link 19 extends in an arc shape from the top to the bottom rearward, and when the vehicle frame 100 is in the deployed state, the rear portion of the rear link 19 extends in the same longitudinal direction substantially in close contact with the rear stand 17, and the front portion of the rear link 19 extends in the same longitudinal direction substantially in close contact with the third link 151. When the frame 100 is in the unfolding state, the child trailer is less shielded by the two linkage members at the outer side of the left and right directions due to the arrangement, so that children or loads can conveniently enter the child trailer from the left side or the right side, and the arrangement is also favorable for avoiding the children from colliding with the two linkage members and being injured.
In this embodiment, the front wheel assemblies 200 are provided in two sets respectively provided on the left and right sides of the frame 100, the rear wheel assemblies 300 are provided in two sets respectively provided on the left and right sides of the frame 100, the front wheel assemblies 200 are provided in the lower portion of the front upright frame 16, and the rear wheel assemblies are provided in the lower portion of the rear upright frame 17, on each side in the left-right direction. The interval between the two sets of front wheel assemblies 200 in the left-right direction is smaller than the interval between the two sets of rear wheel assemblies 300 in the left-right direction. In the folded state of the vehicle frame 100, the front wheel assemblies 200 and the rear wheel assemblies 300 are relatively folded in the front-rear direction, and the two sets of front wheel assemblies 200 are folded between the two sets of rear wheel assemblies 300 in the left-right direction. The width of the children trailer in the front-rear direction after the frame 100 is folded is small due to the arrangement, and the children trailer is convenient to store and transport.
As shown in fig. 6, the front connecting frame 2 includes two front connecting rods 21 which cross each other and are rotatably connected at the crossing, the front connecting rods 21 extend obliquely in the up-down direction, the upper parts of the front connecting rods 21 are rotatably connected to the front upright frame 16 on one side frame assembly 1, the lower parts of the front connecting rods 21 are rotatably connected to the lower parts of the front upright rods 11 on the other side frame assembly 1, specifically, in the present embodiment, the upper ends of the front connecting rods 21 are rotatably connected to the front sliding sleeve part 16a on one side, and the lower ends of the front connecting rods 21 are rotatably connected to the lower ends of the front upright rods 11 on the other side; the rear connecting frame 3 includes two rear connecting rods 31 which intersect each other and are rotatably connected at the intersection, the rear connecting rods 31 extend obliquely in the vertical direction, the upper portions of the rear connecting rods 31 are rotatably connected to the rear upright frames 17 on one side frame assembly 1, the lower portions of the rear connecting rods 31 are rotatably connected to the lower portions of the rear upright rods 12 on the other side frame assembly 1, specifically, in the present embodiment, the upper end portions of the rear connecting rods 31 are rotatably connected to the rear sliding sleeve portions 17a on one side, and the lower end portions of the rear connecting rods 31 are rotatably connected to the lower end portions of the rear upright rods 12 on the other side.
Specifically, in the present embodiment, as shown in fig. 1, 8 and 9, two front connecting rods 21 are rotatably connected through a front rotating shaft 22, and two rear connecting rods 31 are rotatably connected through a rear rotating shaft 32, the child trailer further includes a tow bar 4 and a tow bar seat 5, the tow bar seat 5 is disposed on the front rotating shaft 22, a lower portion of the tow bar 4 is rotatably connected to the tow bar seat 5, and the tow bar seat 5 is further provided with a positioning structure 51 for positioning the tow bar 4. The draw bar seat 5 is arranged at the front end part of the front rotating shaft 22, and the rear side part of the draw bar seat 5 is also provided with a limiting structure 52 for limiting the relative opening angle of the two front connecting rods 21.
Specifically, the positioning structure 51 includes a snap-in groove 51a disposed at the front of the drawbar seat 5, the drawbar 4 can be correspondingly snapped in the snap-in groove 51a along the circumferential direction or disengaged from the snap-in groove 51a, the lower portion of the drawbar 4 is rotatably connected to the drawbar seat 5 through a drawbar rotating shaft 4a, and the snap-in groove 51a is located above the drawbar shaft 4 a. The limiting structure 52 is two sets of limiting bosses oppositely arranged left and right on the rear side part of the drawbar seat 5, on each side in the left-right direction, the limiting bosses are located between the two front connecting rods 21 in the up-down direction, when the frame 100 is in the unfolded state, the two front connecting rods 21 are all abutted with the limiting bosses in a matched manner, and when the frame 100 is in the folded state, the two front connecting rods 21 are all separated from the limiting bosses.
An upper rotation limiting member 6 for limiting the rotation angle of the first link 141 and the third link 151 is further provided between the rear portion thereof and the front portion thereof. Specifically, in the present embodiment, the upper rotation limiting member 6 is a U-shaped rod with a downward opening, the rear end of the first link 141 is fixedly disposed in a rod cavity at the front of the U-shaped rod, and the U-shaped rod extends in the same direction as the first link 141, the upper rod wall of the U-shaped rod is an upper limiting portion 6a, when the frame 100 is in the unfolded state, the front end of the third link 151 abuts against the upper limiting portion 6a, and when the frame 100 is in the folded state, the front end of the third link 151 is separated from the upper limiting portion 6 a.
A lower rotation limiting member 7 for limiting a rotation angle of the second link 142 and the front portion of the fourth link 152 is disposed between the rear portion of the second link 142 and the front portion of the fourth link 152, specifically, in the present embodiment, the lower rotation limiting member 7 is a U-shaped rod with a downward opening, the rear end portion of the second link 142 is fixedly disposed in a rod cavity at the front portion of the U-shaped rod, the U-shaped rod and the second link 142 extend along the same direction, an upper rod wall of the U-shaped rod is a lower limiting portion 7a, when the frame 100 is in the unfolded state, the front end portion of the fourth link 152 abuts against the lower limiting portion 7a, and when the frame 100 is in the folded state, the front end portion of the fourth link 152 is separated from the lower limiting portion 7 a.
A side frame locking member 8 for locking the first link 141 and the second link 142 and/or the third link 151 and the fourth link 152 to each other is provided between them. In the present embodiment, referring to fig. 7 to 8, the side frame locking member 8 is disposed between the first link 141 and the second link 142, specifically, when the frame 100 is in the unfolded state, the side frame locking member 8 extends in the up-down direction, the upper end portion of the side frame locking member 8 is rotatably disposed inside the upper rotation limiting member 6, the lower portion of the side frame locking member 8 has a locking portion 8a, the inside of the lower rotation limiting member 7 is provided with a locking hole portion 7b, and the locking portion 8a corresponds to the locking hole portion 7 b. When the first connecting rod 141 and the second connecting rod 142 are locked, the side frame locking member 8 is pulled downward, the side frame locking member 8 rotates downward around the rotational connection position of the side frame locking member 8 and the upper rotation limiting member 6, and the locking portion 8a is fittingly inserted into the locking hole portion 7b, and at this time, the first connecting rod 141 and the second connecting rod 142 are locked with each other.
When the frame 100 is in the unfolded state, referring to fig. 1 to 4, the first connecting rod 141 and the third connecting rod 151 extend along the same length direction, the second connecting rod 142 and the fourth connecting rod 152 extend along the same length direction, the two front connecting rods 21 are both abutted with the limiting bosses in a matching manner, and the side frame assembly 1, the front connecting frame 2, and the rear connecting frame 3 surround to form a carrying space for a child to sit. The tow bar 4 is pulled forward so that the tow bar 4 is disengaged from the catching groove 51a, and the child trailer can be towed by pulling the tow bar 4 continuously.
In the process of converting the frame 100 from the unfolded state to the folded state, referring to fig. 10 to 13, the locking of the side frame locking member 8 on the first connecting rod 141 and the second connecting rod 142 is released, the first connecting rod 141 is pulled up, so that the first connecting rod 141 and the second connecting rod 142 respectively rotate upward around the respective rotating joints with the front upright post 11, the third connecting rod 151 and the fourth connecting rod 152 respectively rotate upward around the respective rotating joints with the rear upright post 12, the connecting rod 13 moves upward, and the first connecting rod 141, the second connecting rod 142, the third connecting rod 151 and the fourth connecting rod 152 are gradually folded between the front upright post 11 and the rear upright post 12 along the front-rear direction; through the front linkage rod 18, the upward rotation of the first connecting rod 141 drives the front vertical rod 11 to gradually slide downwards along the length direction of the front sliding sleeve part 16 a; the upward rotation of the third link 151, via the rear linkage 19, drives the rear upright 12 to slide gradually downward along the length of the rear slipcover portion 17 a. The upward sliding of the left and right groups of front vertical frames 16 drives the two groups of front connecting rods 21 to separate from the limiting bosses and to gradually and rotatably furl around the front rotating shaft 22, so that the two groups of front vertical rods 11 are gradually and relatively furled along the left and right direction; the upward sliding of the left and right sets of rear uprights 17 drives the two sets of rear connecting rods 31 to gradually rotate around the front rotary shaft 22 to be drawn together, so that the two sets of rear uprights 12 are gradually drawn together relatively in the left and right directions. The drawbar 4 is pushed backward so that the drawbar 4 is fittingly caught in the catching groove 51 a.
When the frame 100 is in the folded state, as shown in fig. 14 to 17, the first connecting rod 141, the second connecting rod 142, the third connecting rod 151 and the fourth connecting rod 152 are folded in the front-rear direction between the front upright 11 and the rear upright 12; the front vertical frame 16 and the front vertical rod 11 are folded in a sliding way, and the rear vertical frame 17 and the rear vertical rod 12 are folded in a sliding way; the left and right groups of front upright posts 11 are folded relatively, and the left and right groups of rear upright posts 12 are folded relatively. The front wheel assemblies 200 and the rear wheel assemblies 300 are relatively collected in the front-rear direction, and the two sets of front wheel assemblies 200 are collected between the two sets of rear wheel assemblies 300 in the left-right direction.
In conclusion, the child trailer disclosed by the invention is simple in structure, can be folded, occupies a small space after being folded, and is convenient to store and transport.
The above-mentioned embodiments are merely illustrative of the technical idea and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the scope of the present invention.
Claims (6)
1. The utility model provides a children's trailer, includes the frame that has expansion state and fold condition, locates the front wheel subassembly and the rear wheel subassembly of frame bottom, its characterized in that: the frame is including dividing two sets of side frame subassemblies, the setting of locating the left and right sides is two sets of the anterior preceding link of side frame subassembly, setting are two sets of the back link between the side frame subassembly rear portion, the frame is under the expansion state, the side frame subassembly includes:
the front upright post extends along the vertical direction;
the front vertical frame extends along the vertical direction, the front vertical frame can be arranged on the front vertical rod in a relatively sliding manner along the vertical direction, and the front wheel assembly is arranged at the lower part of the front vertical frame;
a rear upright rod extending in the up-down direction;
a rear vertical frame extending in the vertical direction, the rear vertical frame being provided on the rear vertical rod so as to be capable of relatively sliding in the vertical direction, the rear wheel assembly being provided at the lower portion of the rear vertical frame,
a connecting rod extending in an up-down direction;
the front wall frame comprises a first connecting rod and a second connecting rod which respectively extend along the front-back direction, the first connecting rod is positioned above the second connecting rod, the front part of the first connecting rod and the front part of the second connecting rod are respectively and rotatably connected to the front upright rod, and the rear part of the first connecting rod and the rear part of the second connecting rod are respectively and rotatably connected to the connecting rods;
the rear surrounding frame comprises a third connecting rod and a fourth connecting rod which respectively extend along the front-rear direction, the third connecting rod is positioned above the fourth connecting rod, the front part of the third connecting rod and the front part of the fourth connecting rod are respectively and rotatably connected on the connecting rods, the rear part of the third connecting rod and the rear part of the fourth connecting rod are respectively and rotatably connected on the rear upright stanchion,
one end of the front linkage rod is rotationally connected to the front vertical frame, and the other end of the front linkage rod is rotationally connected to the first connecting rod;
one end of the rear linkage rod is rotationally connected to the rear vertical frame, and the other end of the rear linkage rod is rotationally connected to the third connecting rod;
the front connecting frame comprises two front connecting rods which are mutually crossed and rotatably connected at the crossed position, the front connecting rods extend obliquely along the vertical direction, the upper parts of the front connecting rods are rotatably connected to the front vertical frame on the side frame assembly on one side, and the lower parts of the front connecting rods are rotatably connected to the lower parts of the front vertical rods on the side frame assembly on the other side; the rear connecting frame comprises two rear connecting rods which are mutually crossed and rotatably connected at the crossed position, the rear connecting rods extend obliquely along the vertical direction, the upper parts of the rear connecting rods are rotatably connected to the rear vertical frame on the side frame assembly on one side, the lower parts of the rear connecting rods are rotatably connected to the lower parts of the rear vertical rods on the side frame assembly on the other side,
the frame is by the in-process of expansion state to fold condition conversion, preceding link with the back link draws in along the left and right direction separately, preceding pole setting is relative preceding grudging post downstream, the back pole setting is relative back grudging post downstream makes connecting rod upward movement, first connecting rod, second connecting rod, third connecting rod and fourth connecting rod all convert to extend and draw in along the fore-and-aft direction from top to bottom preceding pole setting with between the back pole setting.
2. The child trailer of claim 1, wherein: the rear part of the first connecting rod and the front part of the third connecting rod are connected to the upper part of the connecting rod together in a rotating way around a first rotating axis, and the rear part of the second connecting rod and the front part of the fourth connecting rod are connected to the lower part of the connecting rod together in a rotating way around a second rotating axis.
3. The children's trailer of claim 1, wherein: the first connecting rod and the second connecting rod are parallel to each other, the third connecting rod and the fourth connecting rod are parallel to each other, when the frame is in an unfolded state, the first connecting rod and the third connecting rod extend along the same length direction, and the second connecting rod and the fourth connecting rod extend along the same length direction.
4. The children's trailer of claim 1, wherein: the front vertical frame is provided with a front sliding sleeve part, the front sliding sleeve part can be sleeved on the front vertical rod in a relatively sliding manner and is positioned above the first connecting rod, and the front linkage rod is rotationally connected to the front sliding sleeve part; the rear vertical frame is provided with a rear sliding sleeve portion, the rear sliding sleeve portion can be sleeved on the rear vertical rod in a relatively sliding mode and is located above the third connecting rod, and the rear linkage rod is rotationally connected to the rear sliding sleeve portion.
5. The child trailer of claim 1, wherein: the children trailer comprises two front connecting rods, a traction rod and a traction rod seat, wherein the two front connecting rods are rotationally connected through a front rotating shaft, the traction rod seat is arranged on the front rotating shaft, the lower portion of the traction rod is rotationally connected to the traction rod seat, and a positioning structure used for positioning the traction rod is further arranged on the traction rod seat.
6. The children's trailer of claim 5, wherein: the draw bar seat is arranged at the front end part of the front rotating shaft, and the rear side part of the draw bar seat is also provided with a limiting structure for limiting the relative opening angle of the two front connecting rods.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110753059.8A CN113548105B (en) | 2021-07-02 | 2021-07-02 | Children's trailer |
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| CN202110753059.8A CN113548105B (en) | 2021-07-02 | 2021-07-02 | Children's trailer |
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| CN113548105B true CN113548105B (en) | 2022-11-25 |
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| CN114162199B (en) * | 2021-11-08 | 2023-01-31 | 好孩子儿童用品有限公司 | Children's trailer |
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