CN103448778B - The flattening closing-folding mechanism of the forward and backward wheels of stroller - Google Patents
The flattening closing-folding mechanism of the forward and backward wheels of stroller Download PDFInfo
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- CN103448778B CN103448778B CN201310415828.9A CN201310415828A CN103448778B CN 103448778 B CN103448778 B CN 103448778B CN 201310415828 A CN201310415828 A CN 201310415828A CN 103448778 B CN103448778 B CN 103448778B
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- collapsible skeleton
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Abstract
The invention discloses the flattening closing-folding mechanism of the forward and backward wheels of a kind of stroller, including a collapsible skeleton, wheels, pair of rear wheels group and drive assembly before one.Wherein rear wheels horizontally pivoting is socketed on the bottom of collapsible skeleton rear end by this, assembly is driven to be linked between each rear wheels and collapsible skeleton, self-deploy state by collapsible skeleton to be folded to the rotation of the state of folding and interlock this to rear wheels, make each rear wheels go to the angle partially turning 90 degrees from longitudinally rolling the angle advanced simultaneously.The flattening closing-folding mechanism of the forward and backward wheels of stroller of the present invention can make wheels after two when stroller is switched to from the deployed condition used and to fold state, simultaneously all from turn 90 degrees and general flat ground side by side in same plane, really can reach to make folding of baby carriage flattening, reduce the packaging volume of timber and the effect of storage and transportation space and purpose.
Description
Technical field
The present invention relates to the flattening closing-folding mechanism of the forward and backward wheels of a kind of stroller, particularly to a kind of closing-folding mechanism that can make folding of baby carriage flattening, the minimizing packaging volume of timber and storage and transportation space.
Background technology
Stroller is a kind of vehicles aimed at designed by infant, in order to enable to reduce the packaging volume of timber in order to accumulating as far as possible, it is necessary to be locked in deployed condition in use, can be folded again during accumulating, to reduce as far as possible.
But traditional stroller rear wheels group is all affixed to the direction that rolls forward, unless pulled down in advance, otherwise after folding stroller, the wheel footpath of trailing wheel just will result in the basic obstacle being difficult to the reduction accumulating volume of timber, therefore still needs the space of improvement further.
Summary of the invention
For the problem overcoming the above-mentioned volume of timber to reduce further, it is an object of the invention to provide the flattening closing-folding mechanism of a kind of forward and backward wheels of stroller that can make folding of baby carriage flattening, the minimizing packaging volume of timber and storage and transportation space.
A kind of flattening closing-folding mechanism of the forward and backward wheels of stroller, including:
One collapsible skeleton, has a deployed condition and and folds state；
Wheels before one, can be socketed on the bottom of collapsible skeleton front end horizontal rotation；
Pair of rear wheels group, is socketed on the bottom of collapsible skeleton rear end horizontally pivoting；And
One drives assembly, is linked between each rear wheels and collapsible skeleton, self-deploys state by collapsible skeleton and is folded to the rotation of the state of folding and interlocks this to rear wheels, makes each rear wheels go to the angle partially turning 90 degrees from longitudinally rolling the angle advanced simultaneously.
Preferably, the rear end of described collapsible skeleton at least sets a pair rear foot support, and trailing wheel group is socketed in this lower end to rear foot support by respectively.
Described collapsible skeleton is still provided with a forward foot in a step support and a seat support, and described seat support and forward foot in a step support are pivoted, and is provided with a pin joint seat in the front end of forward foot in a step support and connects front wheels with axle.
Preferably, still including a draw bar, described draw bar is linked between collapsible skeleton and front wheels, and when rear wheels are gone to the angle partially turning 90 degrees by this, front wheels are towed lever linkage and go to angle rear wheels are parallel with this.
The front end of described draw bar and pin joint seat are pivoted, and rear end and seat support are pivoted.
Described front wheels include a front-wheel seat and a front-wheel, and described front-wheel seat is pivoted with its upper end and pin joint seat, extend a connection assembly in its lower end and connect front-wheel with axle.
Described rear wheels include a rear wheel seat and a trailing wheel, and hind axle is connected on rear wheel seat, and rear wheel seat sets a socket part and the socket of collapsible skeleton.
The radius sum of described two trailing wheels is less than or equal to the wheelspan between two trailing wheels.
The socket part of described rear wheel seat be provided with one driving skewed slot for drive assembly to driving, then foot support is provided with an elongated slot, and described driving assembly includes:
One actuator, is installed on collapsible skeleton synchronizing moving when can launch with collapsible skeleton or fold；
One first pin, can be installed in rear foot support with moving up and down, and its end passes from elongated slot and snaps in the driving skewed slot of socket part；
One back-moving spring, is installed in rear foot support and makes the first pin move down in order to being biased, and drives skewed slot by pushing tow and produces that component is reverse turns rear wheel seat；
One moving part, is linked between actuator and the first pin, when actuator moves with collapsible skeleton, must pull up the first pin to turn rear wheel seat via moving part.
Preferably, still include a sliding part rotatably can only not be installed in slidably in rear foot support, the upper end of described sliding part is connected with moving part, and set one first fixing hole in the lower end of sliding part in order to fix the first pin, make the end of the first pin after passing elongated slot, be snapped in the driving skewed slot set by socket part.
The rear end of described collapsible skeleton is pivoted a upper bracket, and described actuator is linked between upper bracket and rear foot support.
Described actuator is a runner assembly or a connecting rod.
Described moving part is a flexible wire.
Preferably, still including one second pin and pass and be fixed on rear foot support, and be provided with a spacing elongated slot in socket part, the end of the second pin penetrates spacing elongated slot.
The upper end of described driving skewed slot is provided with on one vertical section, when the first pin slides into upper vertical section, turns rear wheels to this angle partially turning 90 degrees exactly.
The lower end of described driving skewed slot is provided with vertical section, when the first pin slides into lower vertical section, is turned by rear wheels exactly to longitudinally rolling the angle advanced.
The flattening closing-folding mechanism of the forward and backward wheels of stroller of the present invention can make wheels after two when stroller is switched to from the deployed condition used and to fold state, simultaneously all from turn 90 degrees and general flat ground side by side in same plane, really can reach to make folding of baby carriage flattening, reduce the packaging volume of timber and the effect of storage and transportation space and purpose.
Accompanying drawing explanation
Fig. 1 is the deployed condition schematic perspective view that the flattening closing-folding mechanism of the forward and backward wheels of stroller of the present invention is applied to a stroller.
Fig. 2 is the deployed condition side schematic view that the flattening closing-folding mechanism of the forward and backward wheels of stroller of the present invention is applied to a stroller.
Fig. 3 is the driving assembly exploded isometric schematic diagram of the flattening closing-folding mechanism of the forward and backward wheels of stroller of the present invention.
Fig. 4 is the driving assembly of the flattening closing-folding mechanism of the forward and backward wheels of stroller of the present invention and collapsible skeleton interlink function schematic diagram.
Fig. 5 is the schematic diagram that the flattening closing-folding mechanism of the forward and backward wheels of stroller of the present invention carries out folding operation.
Fig. 6 is the flattening closing-folding mechanism of stroller of the present invention forward and backward wheels schematic perspective view when completing to fold operation.
Fig. 7 is the flattening closing-folding mechanism of stroller of the present invention forward and backward wheels side schematic view when completing to fold operation.
Fig. 8 is the flattening closing-folding mechanism of the forward and backward wheels of stroller of the present invention, wherein drives the alternate embodiment schematic diagram that assembly comprises connecting rod.
Fig. 9 is the exploded isometric schematic diagram of the driving component variations embodiment of the flattening closing-folding mechanism of the forward and backward wheels of stroller of the present invention.
[primary clustering symbol description]
| 1: | Forward foot in a step support | 2: | Rear foot support |
| 3: | Upper bracket | 4: | Seat support |
| 5: | Folding joint group | 6: | Drive assembly |
| 7: | Connecting rod | 10: | Collapsible skeleton |
| 11: | Pin joint seat | 12: | Front wheels |
| 13: | Front-wheel seat | 14: | Front-wheel |
| 15: | Connect assembly | 16: | Draw bar |
| 17: | Cross bar | 20: | Longitudinally roll the angle advanced |
| 21: | Rear wheels | 22: | Trailing wheel |
| 23: | Rear wheel seat | 24: | Socket part |
| 25: | Drive skewed slot | 26: | Spacing elongated slot |
| 27: | Lower vertical section | 28: | Upper vertical section |
| 31: | Pivot ear | 30: | The angle partially turning 90 degrees |
| 32: | Grip part | 61: | Actuator |
| 62: | Moving part | 63: | Back-moving spring |
| 64: | First pin | 65: | Sliding part |
| 66: | Second pin | 100: | Deployed condition |
| 200: | Fold state | 651: | Upper and lower displacement chute |
| 652: | First fixing hole | 661: | Second fixing hole |
| 662: | Elongated slot |
Detailed description of the invention
A kind of flattening closing-folding mechanism embodiment according to the forward and backward wheels of stroller of the present invention as shown in Figures 1 and 2, before at least including a collapsible skeleton 10, wheels 12, pair of rear wheels group 21, drive assembly 6.Wherein at least can set a pair rear foot support 2 in the rear end of collapsible skeleton 10, respectively so that the upper end of rear wheels 21 can be connect by axle in the way of horizontal rotation, assembly 6 is driven to be linked between each rear wheels 21 and collapsible skeleton 10, wheels 21 after interlocking two by the expansion of collapsible skeleton 10 or the rotation of folding, make wheels 21 after two each certainly to go to simultaneously and longitudinally roll the angle 20 advanced or the angle 30 partially turning 90 degrees, after thereby making two, wheels 21 are when stroller is switched to, from deployed condition 100, the state 200 of folding, simultaneously all from turn 90 degrees and general flat ground side by side in same plane, reach to make the folding flattening more of stroller, reduce effect and the purpose of the packaging volume of timber and storage and transportation space.
Collapsible skeleton 10 by forward foot in a step support 1, rear foot support 2, upper bracket 3, seat support 4, folding joint group 5, can form one and have a deployed condition 100 and and fold the connection rod set of state 200 in the way of pivot joint；On seat support 4 can stringing seat cloth to form an infant car seat.
The forward foot in a step support 1 of the present embodiment utilizes the two ends of a pair folding joint group 5 and a upper bracket 3 to be pivoted, and extends forward diagonally downward from folding joint group 5, sets a pin joint seat 11 in front bottom end and connects for the upper shaft with front wheels 12.
As it was previously stated, front wheels 12 are can be connected to the pin joint seat 11 of collapsible skeleton 10 front end by axle in the way of horizontal rotation；When after two, wheels 21 are interlocked and go to the angle 30 partially turning 90 degrees, front wheels 12 also can go to the angle parallel with rear wheels 21 manually or automatically.Front wheels 12 include front-wheel seat 13 and a front-wheel 14, and wherein the upper shaft of front-wheel seat 13 is connected to pin joint seat 11, downwardly extend or interlocking one connects assembly 15 and connects front-wheel 14 with axle.Preferably, still can arrange a location control mechanism (not shown) on front-wheel seat 13 so that it is directed can only advance or freely left and right revolution, promotes motility when turning.
When going to, in order to make front wheels 12 wheels 21 after two be interlocked, the angle 30 partially turning 90 degrees, automatically go to the angle parallel with rear wheels 21, a draw bar 16 can be set and be linked between collapsible skeleton 10 and front wheels 12；When wheels 21 go to the angle 30 partially turning 90 degrees after two, interlock draw bar 16 by the pivot of collapsible skeleton 10, utilize draw bar 16 to interlock front wheels 12 to the angle parallel with rear wheels 21.
The front end of the draw bar 16 of the present embodiment and pin joint seat 11 are pivoted, rear end is pivoted with seat support 4 either directly or through a pair cross bar 17, thereby annexation by make collapsible skeleton 10 from deployed condition 100 go to the state 200 of folding time, draw bar 16 must be interlocked by seat support 4, make front wheels 12 go to the angle parallel with wheels after two 21 therewith.
After two, wheels 21 are socketed in the lower end of two rear foot supports 2 respectively, or are socketed on the bottom of collapsible skeleton 10 rear end in the way of other horizontally pivoting, can turn to one and longitudinally roll the angle 20 advanced and an angle 30 partially turning 90 degrees.Rear wheels 21 include rear wheel seat 23 and a trailing wheel 22.The radius sum of two trailing wheels is less than or equal to the wheelspan between two trailing wheels, and each rear wheels 21, in time going to the angle 30 partially turning 90 degrees, are do not interlock each other or overlap.
Trailing wheel 22 axle is connected on corresponding rear wheel seat 23, and each rear wheel seat 23 is respectively provided with a socket part 24 and is socketed with collapsible skeleton 10, and be provided with in socket part 24 a driving skewed slot 25 for drive assembly 6 to driving.As shown in Figure 3, rear wheel seat 23 can set a spacing elongated slot 26, set one second fixing hole 661 on rear foot support 2 is utilized to fix one second pin 66, rear wheel seat 23 makes the end traverse of the second pin 66 or snaps in inside spacing elongated slot 26, so that can only turn round without falling down from rear foot support 2 or departing from the scope of spacing elongated slot 26.Each rear wheel seat 23 thereby can be made can only to rotate and location in the scope longitudinally rolling the angle 20 advanced and the angle 30 partially turning 90 degrees.In order to avoid sliding part 65 is hindered by the second pin 66 when moving up and down, a upper and lower displacement chute 651 can be formed on sliding part 65 and pass for the second pin 66.
Assembly 6 is driven to be linked between each rear wheels 21 and collapsible skeleton 10, when collapsible skeleton 10 self-deploy state 100 be folded to the state 200 of folding time, obtaining mat drives assembly 6 to interlock each rear wheels 21, makes angle 20 that each rear wheels 21 longitudinally roll advance simultaneously from it go to the angle 30 partially turning 90 degrees.
The rear end of the collapsible skeleton 10 of the present embodiment is pivoted a upper bracket 3, can set a grip part 32 in the upper end of upper bracket 3, and both sides respectively sets the upper end of a pivot ear 31 and rear foot support 2 and is pivoted.Actuator 61 is linked between upper bracket 3 and rear foot support 2, drives assembly 6 to include actuator 61, sliding part 65, moving part 62.Wherein actuator 61 is installed on collapsible skeleton 10, can launch with collapsible skeleton 10 and fold and rotate, interlock sliding part 65 then through by moving part 62.
Actuator 61 can be any runner assembly, interlocks upper bracket 3 can pivot with upper bracket 3, structure as shown in Fig. 3 to Fig. 7 and operation, but based on similar principle, also can be embodied as a connecting rod 7 such as Fig. 8, use and drive sliding part 65 through moving part 62.
Sliding part 65 with not rotatably and only slidable mode be placed in rear foot support 2, its mode reached includes setting an elongated slot 662 on rear foot support 2, sliding part 65 can set one first fixing hole 652 in order to fix one first pin 64, thereby allow the first pin 64 can pass in elongated slot 662 and be entrapped in the driving skewed slot 25 set by socket part 24 with end；Being interlocked by upper bracket 3 when actuator 61 and up pull sliding part 65 and during compression reseting spring 63, the first pin 64 will therewith up moving and pushing tow drives skewed slot 25, thereby component produced by pushing tow turns rear wheel seat 23；And when above-mentioned after situation about up being pulled releases, by back-moving spring 63, sliding part 65 down elapsed again and make the first pin 64 move down, through driving the reverse rear wheel seat 23 that turns of skewed slot 25, make to return to script and longitudinally roll the angle 20 advanced.
Although the first pin 64 is fixed on sliding part 65 by the embodiment shown in Fig. 3, and can up pull sliding part 65 to move up by moving part 62, or down press by back-moving spring 63 and move down, but when omitting sliding part 65, also the alternate embodiment shown in Fig. 9 it is referred to, moving part 62 is directly allowed to be connected with the first pin 64, and allow the first pin 64 pass in the elongated slot 662 of rear foot support 2 and to be entrapped in the driving skewed slot 25 set by socket part 24 with end, equally also can produce to turn the effect of rear wheel seat 23 start.
Preferably, can set vertical section 28 in the upper end driving skewed slot 25, can use the angle 30 that rear wheels 21 are positioned partially turn 90 degrees exactly when the first pin 64 slides into upper vertical section 28, it is to avoid rock.In like manner, also can set vertical section 27 in the lower end driving skewed slot 25, just can be positioned rear wheels 21 exactly when the first pin 64 slides into lower vertical section 27 longitudinally to roll the angle 20 advanced, make that angle location is more clear and definite, avoid left and right turn of unnecessary rolling.
Moving part 62 can be a flexible wire or stiff member, connect between actuator 61 and sliding part 65, when actuator 61 moves with collapsible skeleton 10, sliding part 65 must be interlocked via moving part 62, force rear wheel seat 23 to turn to, from the angle 20 longitudinally rolling advance, the angle 30 partially turning 90 degrees via the skewed slot 25 that drives of the first pin 64 traverse rear wheel seat 23.When moving part 62 is embodied as a flexible wire, sliding part 65 is still needed and connects a back-moving spring 63, when discharging sliding part 65 with box lunch moving part 62, utilize the strength of back-moving spring 63 to make sliding part 65 return original position and make rear wheel seat 23 be held in and longitudinally roll the angle 20 advanced.
Claims (15)
1. a flattening closing-folding mechanism for the forward and backward wheels of stroller, including:
One collapsible skeleton, has a deployed condition and and folds state；
Wheels before one, can be socketed on the bottom of collapsible skeleton front end horizontal rotation；
Pair of rear wheels group, is socketed on the bottom of collapsible skeleton rear end horizontally pivoting；And
One drives assembly, is linked between each rear wheels and collapsible skeleton, self-deploys state by collapsible skeleton and is folded to the rotation of the state of folding and interlocks this to rear wheels, makes each rear wheels go to the angle partially turning 90 degrees from longitudinally rolling the angle advanced simultaneously；
One draw bar, described draw bar is linked between collapsible skeleton and front wheels, and when rear wheels are gone to the angle partially turning 90 degrees by this, front wheels are towed lever linkage and go to angle rear wheels are parallel with this.
2. the flattening closing-folding mechanism of the forward and backward wheels of stroller according to claim 1, it is characterised in that the rear end of described collapsible skeleton at least sets a pair rear foot support, trailing wheel group is socketed in this lower end to rear foot support by respectively.
3. the flattening closing-folding mechanism of the forward and backward wheels of stroller according to claim 2, it is characterized in that, described collapsible skeleton is additionally provided with a forward foot in a step support and a seat support, and described seat support and forward foot in a step support are pivoted, and is provided with a pin joint seat in the front end of forward foot in a step support and connects front wheels with axle.
4. the flattening closing-folding mechanism of the forward and backward wheels of stroller according to claim 1, it is characterised in that the front end of described draw bar and pin joint seat are pivoted, rear end and seat support are pivoted.
5. the flattening closing-folding mechanism of the forward and backward wheels of stroller according to claim 3, it is characterised in that described front wheels include a front-wheel seat and a front-wheel, and described front-wheel seat is pivoted with its upper end and pin joint seat, extends a connection assembly and connects front-wheel with axle in its lower end.
6. the flattening closing-folding mechanism of the forward and backward wheels of stroller according to claim 2, it is characterised in that described rear wheels include a rear wheel seat and a trailing wheel, and hind axle is connected on rear wheel seat, rear wheel seat sets a socket part and the socket of collapsible skeleton.
7. the flattening closing-folding mechanism of the forward and backward wheels of stroller according to claim 6, it is characterised in that the radius sum of two trailing wheels of the pair of rear wheels is less than or equal to the wheelspan between two trailing wheels.
8. the flattening closing-folding mechanism of the forward and backward wheels of stroller according to claim 6, it is characterised in that the socket part of described rear wheel seat be provided with one driving skewed slot for drive assembly to driving, then foot support is provided with an elongated slot, and described driving assembly includes:
One actuator, is installed on collapsible skeleton synchronizing moving when can launch with collapsible skeleton or fold；
One first pin, can be installed in rear foot support with moving up and down, and its end passes from elongated slot and snaps in the driving skewed slot of socket part；
One back-moving spring, is installed in rear foot support and makes the first pin move down in order to being biased, and drives skewed slot by pushing tow and produces that component is reverse turns rear wheel seat；
One moving part, is linked between actuator and the first pin, when actuator moves with collapsible skeleton, must pull up the first pin to turn rear wheel seat via moving part.
9. the flattening closing-folding mechanism of the forward and backward wheels of stroller according to claim 8, it is characterized in that, also include a sliding part rotatably can only not be installed in slidably in rear foot support, the upper end of described sliding part is connected with moving part, and set one first fixing hole in the lower end of sliding part in order to fix the first pin, make the end of the first pin after passing elongated slot, be snapped in the driving skewed slot set by socket part.
10. the flattening closing-folding mechanism of the forward and backward wheels of stroller according to claim 8, it is characterised in that the rear end of described collapsible skeleton is pivoted a upper bracket, and described actuator is linked between upper bracket and rear foot support.
11. the flattening closing-folding mechanism of the forward and backward wheels of stroller according to claim 8, it is characterised in that described actuator is a runner assembly or a connecting rod.
12. the flattening closing-folding mechanism of the forward and backward wheels of stroller according to claim 8, it is characterised in that described moving part is a flexible wire.
13. the flattening closing-folding mechanism of the forward and backward wheels of stroller according to claim 8, it is characterized in that, also including one second pin pass and be fixed on rear foot support, and be provided with a spacing elongated slot in socket part, the end of the second pin penetrates spacing elongated slot.
14. the flattening closing-folding mechanism of the forward and backward wheels of stroller according to claim 8, it is characterized in that, the upper end of described driving skewed slot is provided with on one vertical section, when the first pin slides into upper vertical section, turns rear wheels to this angle partially turning 90 degrees exactly.
15. the flattening closing-folding mechanism of the forward and backward wheels of stroller according to claim 8, it is characterized in that, the lower end of described driving skewed slot is provided with vertical section, when the first pin slides into lower vertical section, is turned by rear wheels exactly to longitudinally rolling the angle advanced.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310415828.9A CN103448778B (en) | 2013-09-13 | 2013-09-13 | The flattening closing-folding mechanism of the forward and backward wheels of stroller |
| US14/482,473 US9227649B2 (en) | 2013-09-13 | 2014-09-10 | Jogging stroller frame with a folding mechanism for automatically flattening wheels |
| GB1416117.8A GB2518977B (en) | 2013-09-13 | 2014-09-12 | A jogging stroller frame with an automatic wheel flattening and folding mechanism |
| FR1458607A FR3010684B3 (en) | 2013-09-13 | 2014-09-12 | WHEEL CHASSIS FOR SPORTS STROLLER WITH AUTOMATIC BENDING MECHANISM |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310415828.9A CN103448778B (en) | 2013-09-13 | 2013-09-13 | The flattening closing-folding mechanism of the forward and backward wheels of stroller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103448778A CN103448778A (en) | 2013-12-18 |
| CN103448778B true CN103448778B (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310415828.9A Active CN103448778B (en) | 2013-09-13 | 2013-09-13 | The flattening closing-folding mechanism of the forward and backward wheels of stroller |
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| Country | Link |
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| CN (1) | CN103448778B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203544087U (en) * | 2013-10-16 | 2014-04-16 | 中山市隆成日用制品有限公司 | Baby-carriage rear-wheel carriage-receiving self-rotating mechanism |
| CN104843042B (en) * | 2014-02-13 | 2017-03-29 | 明门香港股份有限公司 | Stroller |
| CN105151105B (en) * | 2015-07-07 | 2017-10-17 | 福建欧仕儿童用品股份有限公司 | Bassinet wheel auto-folder structure |
| EP3127775B1 (en) * | 2015-08-07 | 2019-10-02 | E.H.B. Consulting GmbH | Cart |
| US10850760B2 (en) * | 2016-08-03 | 2020-12-01 | Richard Neal Shapiro | Foldable wheeled carrier including wheel folding actuation handle |
| CN106515831B (en) * | 2016-11-22 | 2018-12-14 | 昆山市贝尔儿童用品有限公司 | Light roadster and its fold mechanism |
| CN110001735B (en) * | 2019-03-29 | 2024-02-27 | 好孩子儿童用品有限公司 | Child cart |
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| US6863297B2 (en) * | 2000-06-28 | 2005-03-08 | Richard N. Shapiro | Folding walking or jogging strollers and cargo carriers including pivoting wheel axles |
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| US2429763A (en) * | 1945-04-27 | 1947-10-28 | Tryon S Lindabury | Collapsible stroller |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN103448778A (en) | 2013-12-18 |
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