CN107618558B - Child cart - Google Patents
Child cart Download PDFInfo
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- CN107618558B CN107618558B CN201710753518.6A CN201710753518A CN107618558B CN 107618558 B CN107618558 B CN 107618558B CN 201710753518 A CN201710753518 A CN 201710753518A CN 107618558 B CN107618558 B CN 107618558B
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- rod
- pivotally connected
- shaft
- stroller
- push
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- 230000000712 assembly Effects 0.000 claims description 12
- 238000000429 assembly Methods 0.000 claims description 12
- 230000007246 mechanism Effects 0.000 description 5
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Abstract
The invention discloses a child stroller, wherein a stroller frame comprises two side brackets which are respectively arranged at two sides, each side bracket comprises a front supporting rod, a rear supporting rod, a side connecting rod, a push rod, a bottom connecting rod, a pull rod and a seat rod, and the rear supporting rod comprises a lower rod and an upper rod which relatively slide and stretch along the up-down direction; two parts of the lower part of the side connecting rod, the upper part of the front supporting rod and the upper part of the upper rod are pivotally connected, and the third part is pivotally connected to one part of the two parts or the three parts are pivotally connected together; the upper part of the side connecting rod is pivotally connected to the push rod; the front part of the bottom connecting rod is pivotally connected to the front supporting rod; the pull rod is pivotally connected to the lower rod, the rear part of the bottom connecting rod is pivotally connected to the pull rod, and the upper part of the pull rod is pivotally connected with the lower part of the push rod; the rear part of the seat rod is pivotally connected to the pull rod, and the front part of the seat rod is pivotally connected to the side connecting rod. The trolley frame is small in size and flat in structure after being folded.
Description
Technical Field
The invention relates to a child stroller.
Background
Child carts in the prior art are generally of a collapsible structure to facilitate the daily carrying and storage of a user. At present, the types of the cart frames of the children carts are various, the number of the rods of the cart frames is different, and the connection relation and the connection position between the rods are different, so that the folding principle and the folding mode are also different. How to simplify the structure of the cart frame and the folding mode of the cart frame on the premise of ensuring stable bearing and pushing of children is always a pursuit goal of the person skilled in the art.
Disclosure of Invention
The invention aims to provide a novel structural form of a child stroller.
In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a children's shallow, includes has the shallow frame of expansion state and folding state, locates the front wheel subassembly at shallow frame bottom front portion, locates the rear wheel subassembly at shallow frame bottom rear portion, and be used for with the shallow frame lock is in the locking mechanical system under the expansion state, the shallow frame is including locating the left and right sides two side brackets, connect in both sides the stull subassembly between the side brackets, the side brackets of every side all include:
a front strut extending gradually upward from front to back;
the rear supporting rod comprises a lower rod and an upper rod which slide and stretch relatively along the length extension direction of the rear supporting rod;
a side link, wherein two parts of the lower part of the side link, the upper part of the front strut and the upper part of the upper strut are pivotally connected, and a third part is pivotally connected to one of the two parts, or the three parts are pivotally connected together;
the upper part of the side connecting rod is pivotally connected to the push rod;
the pull rod is pivotally connected to the lower rod, and the upper part of the pull rod is pivotally connected with the lower part of the push rod;
a bottom link having a front portion pivotally connected to the front strut and a rear portion pivotally connected to the tie rod;
a seat bar having a front portion pivotally connected to the side links and a rear portion pivotally connected to the tie bars;
when the trolley frame is folded, the side connecting rods in the side brackets on each side turn backwards and are folded with the push rods at the rear sides of the rear supporting rods, and the rear supporting rods are shortened along the length direction and are close to the front supporting rods.
Preferably, the lower portion of the side link, the front portion of the seat post and the upper portion of the upper post are rotatably coupled together about a first axis.
Further, the upper part of the front supporting rod is pivotally connected with the upper part of the upper rod around a second shaft, the upper rod comprises a rod part which is in sliding telescopic connection with the lower rod, and a rod joint which is fixedly arranged at the upper end of the rod part, the first shaft is connected with the upper end part of the rod joint, and the second shaft is connected with the lower end part of the rod joint.
Further, when the cart frame is in a unfolded state, the front support rod, the rod joint and the side connecting rod on the same side extend along the same length direction; when the trolley frame is in a folded state, the front supporting rod and the side connecting rods are respectively folded on the front side and the rear side of the rear supporting rod and are respectively parallel to the rear supporting rod.
Preferably, the upper part of the front strut and the lower part of the side link are respectively pivotally connected with the upper part of the upper rod, when the cart frame is in a unfolded state, a first connecting line is formed between a pivot point between the front part of the bottom link and the front strut and a pivot point between the front strut and the upper rod, a second connecting line is formed between a pivot point between the lower part of the side link and the lower rod and a pivot point between the side link and the push rod, and an included angle between the first connecting line and the second connecting line is 120-180 degrees.
Preferably, the pull rod is pivotally connected to the lower rod through a third shaft, the pull rod has a horizontal rod section extending in the front-rear direction, a vertical rod section extending upward from the rear end of the horizontal rod section, and the rear part of the bottom link is pivotally connected to the front part of the horizontal rod section through a fourth shaft, and the fourth shaft is located in front of the third shaft.
Further, when the trolley frame is in a unfolded state, a third connecting line is formed between a pivot point between the side connecting rod and the push rod and a pivot point between the push rod and the upper end of the vertical rod section, a fourth connecting line is formed between a pivot point between the rear part of the seat rod and the vertical rod section and a pivot point between the push rod and the upper end of the vertical rod section, and an included angle between the third connecting line and the fourth connecting line is 90-200 degrees.
Further, the upper portion of the side link is pivotally connected to the push rod by a sixth shaft, which is located above the fifth shaft on the push rod.
Still further, the rear portion of the seat post is pivotally connected to the vertical post section by a seventh axis, the seventh axis being located above the third axis.
Preferably, the cross brace assembly comprises a front cross bar fixedly arranged between the lower parts of the front support rods at two sides, and/or a rear cross bar fixedly arranged between the lower parts of the rear support rods at two sides, and/or an upper cross bar fixedly arranged between the push rods at two sides.
Further, the front wheel assembly has one or more groups and is installed at the lower part of the front cross bar, the rear wheel assembly has two groups, the two groups of rear wheel assemblies are respectively installed at the lower parts of the rear struts at two sides or at the left and right end parts of the rear cross bar, and when the cart frame is in a folded state, the front wheel assembly is positioned between the two rear wheel assemblies along the left and right directions.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the child stroller has the advantages that the number of the rods is small, the structure is simple and square in the unfolded state, the stability is good, the folding and unfolding operations are simple and convenient, the front support rod, the rear support rod, the side connecting rod and the push rod of the stroller frame can be tightly folded together after being folded, the stroller frame presents a very flat structure, and great convenience is brought to daily use, carrying and storage of users.
Drawings
FIG. 1 is a perspective view of a stroller according to the present invention in an unfolded state;
FIG. 2 is a side view of the child stroller of the present invention in an expanded configuration;
FIG. 3 is another perspective view of the stroller of the present invention in an expanded state;
FIG. 4 is a perspective view of the child stroller in a semi-collapsed condition according to the present invention;
FIG. 5 is a side view of the child stroller in a semi-collapsed condition according to the present invention;
FIG. 6 is another perspective view of the child stroller in a semi-collapsed condition according to the present invention;
FIG. 7 is a perspective view of the child stroller of the present invention in a collapsed condition;
FIG. 8 is a side view of the child stroller of the present invention in a collapsed condition;
FIG. 9 is another perspective view of the child stroller in a collapsed condition according to the present invention;
wherein: 10. a side bracket; 101. a front cross bar; 201. a rear cross bar; 401. an upper cross bar;
1. a front strut; 2. a rear strut; 21. a lower rod; 22. a pole is arranged; 22a, a stem; 22b, a rod joint;
3. a side link; 4. a push rod; 5. a bottom link; 6. a pull rod; 61. a vertical rod section; 62. a horizontal pole section;
7. a seat rod; 8. a front wheel assembly; 9. a rear wheel assembly;
11. a first shaft; 12. a second shaft; 13. a third shaft; 14. a fourth shaft; 15. a fifth shaft; 16. a sixth shaft; 17. a seventh axis; 18. and an eighth axis.
Detailed Description
The technical scheme of the invention is further described below with reference to the attached drawings and specific embodiments.
The child stroller shown in fig. 1 to 9 comprises a stroller frame having an unfolded state and a folded state, a front wheel assembly 8 provided at the front of the stroller frame bottom, a rear wheel assembly 9 provided at the rear of the stroller frame bottom, and a locking mechanism for locking the stroller frame in the unfolded state. The trolley frame comprises two side brackets 10 which are respectively arranged at the left side and the right side, and a transverse strut assembly which is connected between the two side brackets 10.
As shown in fig. 1 to 3, the side brackets 10 on each side include a front strut 1, a rear strut 2, a side strut 3, a push rod 4, a bottom link 5, a pull rod 6, and a seat rod 7.
The front strut 1 gradually inclines upwards from front to back; the rear strut 2 comprises a lower rod 21 and an upper rod 22 which relatively slide and stretch along the length direction; two of the three parts of the lower part of the side link 3, the upper part of the front strut 1 and the upper part of the upper rod 22 are pivotally connected, and the third part is pivotally connected to one of the two parts, or the three parts of the lower part of the side link 3, the upper part of the front strut 1 and the upper part of the upper rod 22 are pivotally connected together.
The upper part of the side connecting rod 3 is pivotally connected to the push rod 4; the bottom connecting rod 5 extends along the front-rear direction, and the front part of the bottom connecting rod is pivotally connected to the front supporting rod 1; the pull rod 6 is pivotally connected to the lower rod 21, the rear part of the bottom connecting rod 5 is pivotally connected to the pull rod 6, and the upper part of the pull rod 6 is pivotally connected to the lower part of the push rod 4; the seat post 7 extends in the front-rear direction, and is pivotally connected at its rear portion to the tie rod 6 and at its front portion to the side link 3.
In some embodiments, the upper portion of the front strut 1 and the lower portion of the side link 3 are pivotally connected to the upper portion of the upper rod 22, respectively, as shown in fig. 2, the lower portion of the side link 3 and the upper portion of the upper rod 22 are pivotally connected to a point a, the upper portion of the front strut 1 and the upper portion of the upper rod 22 are pivotally connected to a point b, the front portion of the bottom link 5 and the front strut 1 are pivotally connected to a point c, the upper portion of the side link 3 and the push rod 4 are pivotally connected to a point d, and when the stroller frame is in the unfolded state, a first connection bc formed by the point b and the point c and a second connection ad formed by the point a and the point d form an included angle α between 120 ° to 180 °.
In the present embodiment, as shown in fig. 1 to 3, the upper lever 22 includes a lever portion 22a slidably extended and contracted with the lower lever 21, a lever joint 22b fixedly provided at an upper end of the lever portion 22a, and a lower portion of the side link 3 is pivotally connected to an upper end portion of the lever joint 22b via a first shaft 11, and an upper portion of the front strut 1 is pivotally connected to a lower end portion of the lever joint 22b via a second shaft 12. In the present embodiment, the length extending direction of the rod joint 22b is perpendicular to the length extending direction of the rod portion 22a, and the first shaft 11 and the second shaft 12 are respectively located on the front and rear sides of the axial line of the rod portion 22 a. The front part of the seat bar 7 is pivotally connected to the upper end part of the bar joint 22b of the upper bar 22 and the lower part of the side link 3 by a first shaft 11. When the cart frame is unfolded, the front strut 1, the rod joint 22b and the side link 3 extend in the same length direction.
Referring to the drawings, the tie rod 6 is pivotally connected to the lower rod 21 of the rear strut 2 by a third shaft 13, the tie rod 6 having a horizontal rod section 62 extending in the front-rear direction and a vertical rod section 61 extending upward from the rear end of the horizontal rod section 62; here, the horizontal leg portion 62 of the tie rod 6 is pivotally connected to the lower leg 21 by the third shaft 13 described above at the junction of the vertical leg portion 61.
The front part of the bottom link 5 is pivotally connected to the front strut 1 by an eighth shaft 18, the rear part of the bottom link 5 is pivotally connected to the front part of the horizontal leg 62 by a fourth shaft 14, the fourth shaft 14 being located in front of the third shaft 13, the eighth shaft 18 being located on the front strut 1 below the second shaft 12.
Referring to fig. 2, the upper end of the vertical rod section 61 is pivotally connected to the lower end of the push rod 4 at point e via a fifth shaft 15, and the upper end of the side link 3 is pivotally connected to the push rod 4 via a sixth shaft 16, i.e., point d, the sixth shaft 16 being located above the fifth shaft 15 on the push rod 4; the rear part of the seat post 7 is pivoted to the vertical rod section 61 of the pull rod 6 via a seventh axle 17, i.e. at the point f, the seventh axle 17 being located below the fifth axle 15 on the vertical rod section 61 and above the third axle 13. When the trolley frame is in an unfolding state, an included angle beta formed between a third connecting line de formed between the d point and the e point and a fourth connecting line ef formed between the f point and the e point is 90-200 degrees. In this embodiment, the vertical rod section 61 is arranged to extend in the same length direction as the push rod 4 when the trolley frame is in the deployed state.
In the side bracket 10 on each side, a four-bar linkage is formed among the side link 3, the push rod 4, the pull rod 6 and the seat rod 7; a crank block mechanism is formed among the seat rod 7, the pull rod 6 and the rear supporting rod 2; a sliding block four-bar mechanism is formed among the front supporting rod 1, the bottom connecting rod 5, the pull rod 6 and the rear supporting rod 2, and the three mechanisms are mutually linked to realize the relative unfolding and folding of each rod piece in the side support 10.
Referring to fig. 1 and 3, in this embodiment, the cross brace assembly includes a front cross bar 101 fixed between the lower parts of the front struts 1 on both sides, a rear cross bar 201 fixed between the lower parts of the rear struts 2 on both sides, and an upper cross bar 401 fixed between the upper parts of the push rods 4 on both sides. Here, the front cross bar 101 and the front struts 1 at both sides are integrally formed in a U shape with an opening facing upward, and the upper cross bar 401 and the push rods 4 at both sides are integrally formed in a U shape with an opening facing downward; the front wheel assemblies 8 are arranged in two groups and are arranged at the lower part of the front cross bar 101; the rear rail 201 is fixedly provided between lower portions of the rear struts 2 on both sides, and the rear wheel assemblies 9 are provided in two groups and are respectively mounted on both left and right end portions of the rear rail 201 on both sides. Here, the space between the two rear wheel assemblies 9 in the left-right direction is larger than the occupied width of the two front wheel assemblies 8 in the left-right direction.
Referring to fig. 1 to 3, when the frame of the cart is locked in the unfolded state, the upper rod 22 of the rear strut 2 is unfolded and extended relative to the lower rod 21, and the bottom link 5 and the horizontal rod section 62 of the pull rod 6 extend along the same length direction, so that a triangle structure is formed among the front strut 1, the bottom link 5, the pull rod 6 and the rear strut 2; the front support rod 1 and the side connecting rod 3 extend along the same straight line direction, and the push rod 4 and the vertical rod section 61 of the pull rod 6 extend along the same length direction, so that another triangle structure is formed among the front support rod 1, the side connecting rod 3, the push rod 4, the pull rod 6 and the bottom connecting rod 5; a triangle structure is also formed among the side connecting rod 3, the seat rod 7, the pull rod 6 and the push rod 4. The whole vehicle has compact, elegant and beautiful appearance in the unfolding state, and good rigidity and stability.
When the cart frame needs to be folded, after the locking mechanism is unlocked, referring to fig. 4 to 6, the push rod 4 is pressed down to enable the push rod 4 to descend, the push rod 4 drives the upper end part of the side connecting rod 3 and the upper end part of the pull rod 6 to descend together, the side connecting rod 3 and the seat rod 7 turn backwards relative to the rear supporting rod 2 around the first shaft 11, the pull rod 6 rotates around the third shaft 13 to enable the vertical rod section 61 of the pull rod to turn backwards, and the upper rod 22 and the lower rod 21 of the rear supporting rod 2 gradually slide relatively and shorten; at the same time, the front end of the horizontal bar section 62 on the pull bar 6 moves upward along with the upward movement to move the rear end of the bottom link 5 upward, so that the front support bar 1 and the rear support bar 2 are gradually folded along the front-rear direction.
Finally, referring to fig. 7 to 9, the push rod 4 and the side link 3 are folded at the rear side of the rear strut 2, the rear strut 2 is shortened in the length direction and is folded with the front strut 1, and the two front wheel assemblies 8 are folded between the two rear wheel assemblies 9 in the left-right direction. Specifically, the front strut 1 and the side link 3 are respectively folded on the front and rear sides of the rear strut 2 and are respectively approximately parallel to the rear strut 2, and the push rod 4 is folded on the rear side of the side link 3 and is approximately parallel to the side link 3. The folded trolley is in a very flat and compact state, occupies very small space, can stand on the ground, and is convenient for a user to daily store and carry.
When the cart frame needs to be unfolded for use, an operator only needs to pull the push rod 4, so that each rod piece on the cart frame moves relatively to be unfolded in a linkage way, and the unfolding operation is quite convenient.
The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
Claims (10)
1. The utility model provides a children's shallow, includes has the shallow frame of expansion state and folding state, locates the front wheel subassembly at shallow frame bottom front portion, locates the rear wheel subassembly at shallow frame bottom rear portion, and be used for with the shallow frame lock is in the locking mechanical system in the expansion state, the shallow frame is including locating two side brackets of left and right sides, connect in both sides the stull subassembly between the side brackets, its characterized in that, each side the side bracket all includes:
a front strut extending gradually upward from front to back;
the rear supporting rod comprises a lower rod and an upper rod which slide and stretch relatively along the length extension direction of the rear supporting rod;
a side link, wherein two parts of the lower part of the side link, the upper part of the front strut and the upper part of the upper strut are pivotally connected, and a third part is pivotally connected to one of the two parts, or the three parts are pivotally connected together around the same rotation center line;
the upper part of the side connecting rod is pivotally connected to the push rod;
the pull rod is pivotally connected to the lower rod, and the upper part of the pull rod is pivotally connected with the lower part of the push rod;
a bottom link having a front portion pivotally connected to the front strut and a rear portion pivotally connected to the tie rod;
a seat bar having a front portion pivotally connected to the side links and a rear portion pivotally connected to the tie bars;
when the trolley frame is folded, the side connecting rods in the side brackets on each side turn backwards and are folded with the push rods at the rear sides of the rear supporting rods, and the rear supporting rods are shortened along the length direction and are close to the front supporting rods.
2. The stroller of claim 1, wherein: the upper part of the front supporting rod and the lower part of the side connecting rod are respectively and pivotally connected with the upper part of the upper rod, wherein the lower part of the side connecting rod, the front part of the seat rod and the upper part of the upper rod are rotatably connected together around a first shaft.
3. The stroller of claim 2, wherein: the upper part of the front supporting rod is pivotally connected with the upper part of the upper rod around a second shaft, the upper rod comprises a rod part which is in sliding telescopic connection with the lower rod and a rod joint which is fixedly arranged at the upper end of the rod part, the first shaft is connected with the upper end part of the rod joint, and the second shaft is connected with the lower end part of the rod joint.
4. A stroller according to claim 3, wherein: when the trolley frame is in a unfolding state, the front support rods, the rod joints and the side connecting rods on the same side extend along the same length direction; when the trolley frame is in a folded state, the front supporting rod and the side connecting rods are respectively folded on the front side and the rear side of the rear supporting rod and are respectively parallel to the rear supporting rod.
5. The stroller of claim 1, wherein: the upper part of the front support rod and the lower part of the side connecting rod are respectively in pivot connection with the upper part of the upper rod, when the trolley frame is in a unfolding state, a first connecting line is formed between a pivot point between the front part of the bottom connecting rod and the front support rod and a pivot point between the front support rod and the upper rod, a second connecting line is formed between a pivot point between the lower part of the side connecting rod and the lower rod and a pivot point between the side connecting rod and the push rod, and an included angle between the first connecting line and the second connecting line is 120-180 degrees.
6. The stroller of claim 1, wherein: the pull rod is connected to the lower rod through a third shaft pivot, the pull rod is provided with a horizontal rod section extending along the front-back direction and a vertical rod section extending upwards from the rear end part of the horizontal rod section, the rear part of the bottom connecting rod is connected with the front part of the horizontal rod section through a fourth shaft pivot, and the fourth shaft is positioned in front of the third shaft.
7. The stroller of claim 6, wherein: when the trolley frame is in an unfolding state, a third connecting line is formed between a pivot point between the side connecting rod and the push rod and a pivot point between the push rod and the upper end of the vertical rod section, a fourth connecting line is formed between a pivot point between the rear part of the seat rod and the vertical rod section and a pivot point between the push rod and the upper end of the vertical rod section, and an included angle between the third connecting line and the fourth connecting line is 90-200 degrees.
8. The stroller of claim 7, wherein: the upper part of the side connecting rod is pivotally connected to the push rod through a sixth shaft, and the sixth shaft is positioned above the fifth shaft on the push rod.
9. The stroller of claim 6, wherein: the rear part of the seat post is pivotally connected to the vertical rod section through a seventh shaft, and the seventh shaft is positioned above the third shaft.
10. A stroller according to any one of claims 1 to 9, wherein: the front wheel assembly is provided with one or more groups of front cross bars and two groups of rear wheel assemblies, the rear wheel assemblies are respectively arranged at the two sides of the front cross bars or the left and right end parts of the rear cross bars, and when the cart frame is in a folded state, the front wheel assemblies are positioned between the two rear wheel assemblies along the left and right directions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710753518.6A CN107618558B (en) | 2017-08-29 | 2017-08-29 | Child cart |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710753518.6A CN107618558B (en) | 2017-08-29 | 2017-08-29 | Child cart |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107618558A CN107618558A (en) | 2018-01-23 |
| CN107618558B true CN107618558B (en) | 2024-01-19 |
Family
ID=61088367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710753518.6A Active CN107618558B (en) | 2017-08-29 | 2017-08-29 | Child cart |
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| CN (1) | CN107618558B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108773408A (en) * | 2018-07-02 | 2018-11-09 | 好孩子儿童用品有限公司 | A kind of children trolley |
| CN109278838A (en) * | 2018-11-02 | 2019-01-29 | 好孩子儿童用品有限公司 | Children trolley |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2015436A (en) * | 1978-02-17 | 1979-09-12 | Ettridge J P | Collapsible Child's Carriage |
| CN206384003U (en) * | 2016-12-01 | 2017-08-08 | 好孩子儿童用品有限公司 | Children trolley |
| CN207311559U (en) * | 2017-08-29 | 2018-05-04 | 好孩子儿童用品有限公司 | Children trolley |
-
2017
- 2017-08-29 CN CN201710753518.6A patent/CN107618558B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2015436A (en) * | 1978-02-17 | 1979-09-12 | Ettridge J P | Collapsible Child's Carriage |
| CN206384003U (en) * | 2016-12-01 | 2017-08-08 | 好孩子儿童用品有限公司 | Children trolley |
| CN207311559U (en) * | 2017-08-29 | 2018-05-04 | 好孩子儿童用品有限公司 | Children trolley |
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| CN107618558A (en) | 2018-01-23 |
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