CN104326007B - Locking mechanism and children trolley for children trolley - Google Patents
Locking mechanism and children trolley for children trolley Download PDFInfo
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- CN104326007B CN104326007B CN201410563548.7A CN201410563548A CN104326007B CN 104326007 B CN104326007 B CN 104326007B CN 201410563548 A CN201410563548 A CN 201410563548A CN 104326007 B CN104326007 B CN 104326007B
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- support
- connector
- lockhole
- locking piece
- children trolley
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Abstract
The invention discloses a kind of locking mechanism for children trolley and children trolley.Children trolley includes vehicle frame, vehicle frame includes the first support, second support, 3rd support, locking mechanism includes housing, rotate the locking piece being arranged at the second support, for controlling the operating parts of locking piece activity, first support, second support, 3rd support phase co-rotation connects, first support, second support, at least at the first support in 3rd support, offer porose on 3rd support or on edge, be formed with outward extending projection, two holes can be connected and overlap to form limiting section to form lockhole or two projections, locking piece has a sticking department matching with lockhole or limiting section, operating parts has the first contact site that can contact with housing, when rotating operation part, first contact site abuts housing thus drives locking piece to rotate and make sticking department depart from lockhole or limiting section.
Description
Technical field
The present invention relates to a kind of locking mechanism for children trolley and children trolley.
Background technology
In prior art, children trolley generally comprises the vehicle frame with expanded position and folding position, the front component being arranged at front portion at the bottom of described vehicle frame, the wheel assembly being arranged at rear portion at the bottom of described vehicle frame, the frame locking mechanism being locked in described vehicle frame under expanded position, the seat being arranged on described vehicle frame.During vehicle frame folding, seat need to fold therewith, easily occurs causing vehicle frame not fold because the cloth set at seat involves or folding the problem having some setbacks.The vehicle frame of existing children trolley is of a great variety, and annexation, link position between the number of the rod member of vehicle frame rod member different, each are different, thus folding principle is different with folding mode.Folding convenient is smooth and easy, is the target that children trolley designer pursues.
Content of the invention
For the problems referred to above, it is an object of the invention to provide a kind of locking mechanism for children trolley and children trolley, its simple in construction and fold smooth and easy convenience.
For solving above-mentioned technical problem, the technical solution used in the present invention is:
nullA kind of children trolley，Including have the vehicle frame of expanded position and folding position、It is arranged at front component and the wheel assembly of described bottom of frame，Described vehicle frame includes the first support、Second support、3rd support and for described vehicle frame is locked in the locking mechanism of expanded position，Described first support、Second support、It is separately installed with described front component and wheel assembly on two parts in 3rd support、Another parts are used as the push rod of this children trolley，Described locking mechanism includes housing、It is rotationally connected with the locking piece of described second support、For controlling the operating parts of described locking piece action，Described first support、Second support、3rd support phase co-rotation connects or connects in relative rotation two-by-two，Described first support、Second support、At least at described first support in 3rd support、Offer porose on 3rd support or on edge, be formed with outward extending projection，Hole described in two is connected to form lockhole or the projection described in two overlaps formation limiting section，Described locking piece has a sticking department matching with described lockhole or limiting section，When locking mechanism is in the lock state，The sticking department of locking piece inserts in lockhole or offsets with the sidepiece of limiting section，When locking mechanism is in released state，Sticking department departs from lockhole or limiting section，Make the first support、Second support、3rd support is released，Described operating parts has the first contact site that can contact with described housing，When rotating described operating parts，Described first contact site abuts housing thus drives locking piece to rotate and make described sticking department depart from described lockhole or described limiting section.
Preferably, such as the first support, the second support, the 3rd support phase co-rotation connection when, described lockhole deviation the first support, the second support, the center of rotation of the 3rd support.
Preferably, described first contact site is outwardly arc.
Preferably, described Access Division has second contact site contacting with described second support, and described second contact site is outwardly arc.
Preferably, described locking mechanism include being arranged between described locking piece and housing for the return unit that described sticking department is resetted.
Preferably, described first support has one first connector, described second support has one second connector, described 3rd support has one the 3rd connector, described housing is hollow, described first connector, second connector, 3rd connector is positioned at described housing, hole described in two is opened in the first connector respectively, on 3rd connector, also a hole is offered on described second connector, first connector, hole on second connector and the 3rd connector is connected to form described lockhole, a locked groove matching with described sticking department is offered on described housing, when described vehicle frame is at expanded position, described sticking department inserts in described lockhole and locked groove.
It is highly preferred that described first connector, the second connector, the 3rd connector pivotally connect described housing by one second.
Preferably, when described vehicle frame is at expanded position, described first contact site contacts with housing near one end of described locking piece, and when described vehicle frame is in folding position, described first contact site contacts with housing away from one end of described locking piece.
nullA kind of locking mechanism for children trolley，This children trolley includes the vehicle frame with expanded position and folding position、It is arranged at front component and the wheel assembly of described bottom of frame，Described vehicle frame includes the first support、Second support、3rd support and for described vehicle frame is locked in the locking mechanism of expanded position，Described first support、Second support、It is separately installed with described front component and wheel assembly on two parts in 3rd support、Another parts are used as the push rod of this children trolley，Described locking mechanism includes housing、It is rotationally connected with the locking piece of described second support、For controlling the operating parts of described locking piece action，Described first support、Second support、3rd support phase co-rotation connects or connects in relative rotation two-by-two，Described first support、Second support、At least at described first support in 3rd support、Offer porose on 3rd support or on edge, be formed with outward extending projection，Hole described in two is connected and overlaps to form limiting section to form lockhole or the projection described in two，Described locking piece has a sticking department matching with described lockhole or limiting section，When locking mechanism is in the lock state，The sticking department of locking piece inserts in lockhole or offsets with the sidepiece of limiting section，When locking mechanism is in released state，Sticking department departs from lockhole or limiting section，Make the first support、Second support、3rd support is released，Described operating parts has the first contact site that can contact with described housing，When rotating described operating parts，Described first contact site abuts housing thus drives locking piece to rotate and make described sticking department depart from described lockhole or limiting section.
The present invention uses above structure, has the advantage that vehicle frame includes the first support, the second support and the 3rd support compared to existing technology, vehicle frame can be locked in expanded position by locking mechanism, the simple in construction of this children trolley；Driving locking piece to rotate to unlock locking mechanism by operation operating parts, free to rotate between the first support, the second support, the 3rd support, the first support, the second support, the 3rd support phase draw close the folding realizing children trolley, fold smooth and easy convenience.
Brief description
Accompanying drawing
1
For the vehicle frame of the present invention at the structural representation of expanded position；
Accompanying drawing
2
For the vehicle frame of the present invention structural representation in folding position；
Accompanying drawing
3
For the present invention locking mechanism lock when structural representation；
Accompanying drawing
4
For the present invention locking mechanism unlock when structural representation.
Wherein:
10
, vehicle frame；
1
, the first support；
2
, the second support；
3
, the 3rd support；
4
, locking mechanism；
41
, housing；
411
, fore shell；
4111
, through hole；
412
, back cover；
4121
, locked groove；
413
, the second pivot；
42
, the first connector；
43
, the second connector；
431
, the first pivot；
44
, the 3rd connector；
45
, lockhole；
46
, locking piece；
461
, sticking department；
462
, the 3rd pivot；
47
, operating parts；
471
, Access Division；
472
, the first contact site；
473
, the second contact site；
48
, return unit；
20
, front component；
30
, wheel assembly.
Detailed description of the invention
Below in conjunction with the accompanying drawings presently preferred embodiments of the present invention is described in detail, so that advantages and features of the invention can be easier to be understood by the person skilled in the art, thus protection scope of the present invention is made and apparent clearly defines.
Accompanying drawing
1
To accompanying drawing
4
It show a kind of folding children's barrow.In conjunction with accompanying drawing
1
And accompanying drawing
2
Shown in, this children trolley includes the vehicle frame with expanded position and folding position
10
, be arranged at described vehicle frame
10
The front component of bottom
20
And wheel assembly
30
.Described vehicle frame
10
Including the first support
1
, the second support
2
, the 3rd support
3
And for by described vehicle frame
10
It is locked in the locking mechanism of expanded position
4
, described first support
1
, the second support
2
, the 3rd support
3
In two parts on be separately installed with described front component
20
And wheel assembly
30
, another parts be used as this children trolley push rod.Specific in the present embodiment, described wheel assembly
30
, front component
20
It is respectively arranged in described second support
2
, the 3rd support
3
, the second support
2
With the 3rd support
3
As rear wheel support and the front-wheel support of children trolley, the first support
1
Push rod as children trolley.
In conjunction with accompanying drawing
3
And accompanying drawing
4
Shown in, described first support
1
There is one first connector
42
, described second support
2
There is one second connector
43
, described 3rd support
3
There is one the 3rd connector
44
.First connector
42
, the second connector
43
, the 3rd connector
44
It is respectively fixedly connected with in the first support
1
Lower end, the second support
2
Upper end, the 3rd support
3
Upper end.Described locking mechanism
4
Including the housing of hollow
41
, the first connector
42
, the second connector
43
, the 3rd connector
44
, pass through one first pivot
431
Rotation is arranged at described second connector
43
Locking piece
46
, pass through one the 3rd pivot
462
It is rotationally connected with described locking piece
46
Be used for control locking piece
46
The operating parts of action
47
.Described first connector
42
, the second connector
43
, the 3rd connector
44
, locking piece
46
It is positioned at described housing
41
In, described housing
41
On offer for described operating parts
47
The through hole passing through
4111
, described operating parts
47
Part pass described housing
41
For for user's operation, this part is along locking piece dorsad
46
Direction extend.Specifically, described housing
41
Including fore shell
411
And back cover
412
, fore shell
411
And back cover
412
Between be formed with cavity, the first connector
42
, the second connector
43
, the 3rd connector
44
Be arranged in this cavity and can in cavity relative housing
41
Rotate.Described first connector
42
, the second connector
43
, the 3rd connector
44
Phase co-rotation connects, it is possible to connect in relative rotation two-by-two.Specific in the present embodiment, described first connector
42
, the second connector
43
, the 3rd connector
44
By one second pivot
413
It is rotationally connected with described fore shell
411
And back cover
412
Between.
Described first connector
42
, the second connector
43
, the 3rd connector
44
On all offer a hole, the hole described in three is connected and forms a lockhole
45
, described back cover
412
On offer locked groove
4121
.Described locking piece
46
There is relative first end and the second end, described locking piece
46
The first end be bent to form one with described lockhole
45
And locked groove
4121
The sticking department matching
461
.First connector
42
, the second connector
43
, the 3rd connector
44
Part in the form of sheets and along the second pivot
413
Axially stack setting successively.When locking mechanism is in the lock state, locking piece
46
Sticking department
461
Insert lockhole
45
In, when locking mechanism is in released state, sticking department
461
Depart from lockhole
45
, make the first support
1
, the second support
2
, the 3rd support
3
Being released, three can relatively rotate.In some other embodiments, the first connector
42
, the 3rd connector
44
Can be located at the second connector
43
The same side, only at the first connector
42
, the 3rd connector
44
A upper hole of offering respectively, the two hole is connected composition lockhole
45
, sticking department
461
Insert lockhole
45
In can be by the locking of three support phases.
In addition to above-mentioned set-up mode, it is possible at the first support
1
The first connector
42
With the 3rd support
3
The 3rd connector
44
Edge be respectively formed on a respectively radially outward extending projection, above-mentioned two projection overlaps and forms limiting section.Work as vehicle frame
10
When expanded position, two projections overlap composition limiting section, sticking department
461
Offset with the sidepiece of limiting section to stop the first support
1
With the 3rd support
3
Relative second support
2
Rotate, make the first support
1
, the second support
2
With the 3rd support
3
Relatively launch；Work as vehicle frame
10
When folding position, sticking department
461
Rotate and depart from limiting section, the first support
1
With the 3rd support
3
Relative second support
2
Rotate to fold.
In the present embodiment, due to the first support
1
, the second support
2
, the 3rd support
3
By the second pivot
413
Phase co-rotation connects, therefore described lockhole
45
The first support must be deviateed
1
, the second support
2
, the 3rd support
3
Center of rotation that is second pivot
413
, and composition lockhole
45
Three holes rotating around the second pivot
413
Rotate.
Described operating parts
47
By the 3rd pivot
462
It is rotationally connected with described locking piece
46
The second end, the first pivot
431
It is positioned at sticking department
461
With the 3rd pivot
462
Between.Specifically, described fore shell
411
With described second support
2
Between be formed with a space, described locking piece
461
It is positioned at this space, described operating parts
47
One end have one and be in described fore shell actively
411
With described second support
2
Between Access Division
471
, described fore shell
411
On offer through hole
4111
, described operating parts
47
The other end pass through described through hole
4111
Extend to described housing
41
Outer for user's operation, described Access Division
471
By one the 3rd pivot
462
It is rotationally connected with described locking piece
46
The second end.When described vehicle frame
1
When expanded position, described operating parts
47
Be positioned at described housing
41
Outer part is along away from described locking piece
46
Direction extend.Correspond specifically to accompanying drawing
3
In, it is positioned at housing
41
This outer part operation part
47
Downwardly extend.
Described Access Division
471
Have one with described fore shell
411
The first contact site of contacting of inwall
472
, one with described second support
2
Or second connector
43
The second contact site contacting
473
, described first contact site
472
The arc outwardly in middle part, described second contact site
473
The arc outwardly in middle part.When operation unlock piece
47
During bottom-up rotation, due to the first contact site
472
And fore shell
411
Abut so that unlock piece
47
Operation smooth and easy.Specifically in Access Division
471
Rotation process in: described first contact site
472
With described fore shell
411
Contact near described locking piece
46
First contact position of one end and away from described locking piece
46
The second contact position.Described first contact position and the second contact position are in laying respectively at described first contact site
472
Two ends, when the first contact site described in described vehicle frame self-deploys when state converts to folded state
472
From described first contact position and described fore shell
411
Contact is gradually smoothly transitted into the second contact position and described fore shell
411
Contact.In the present invention, in conversion between folding and deployed condition for the described vehicle frame, described second contact site
473
Can be with the second support
2
Contact also can not contact, and it can't affect the operation of locking mechanism.
Described Access Division
471
Having can be with described second support
2
The first contact position contacting and the second contact position, the 3rd contact position that can contact with described fore shell and the 4th contact position.Distance between described first contact position and the axial line of the 3rd pivot is more than the distance between the second contact position and the axial line of the 3rd pivot, and the distance between described 3rd contact position and the axial line of the 3rd pivot is less than the distance between the 4th contact position and the axial line of the 3rd pivot.See accompanying drawing
3
, when described first contact position and the second support
2
Contact, described sticking department
461
Insert lockhole
45
In, described 3rd contact position and fore shell
411
Contact.See accompanying drawing
4
, when described second contact position and the second support
2
Contact, described sticking department
461
Depart from lockhole
45
, described 4th contact position and fore shell
411
Contact.Access Division in the present embodiment
471
With reference to cam design, it is by changing and the second support
2
Contact position, the 3rd pivot
462
Change therewith with the distance of the second support, and then drive locking piece
46
Sticking department
461
Depart from, insert lockhole
45
In.
Described locking piece
46
The first end and housing
41
Between be provided with for by described locking piece
46
The return unit resetting
48
.Specific in the present embodiment, described return unit
48
For stage clip, fore shell is located on stage clip top
411
And locking piece
46
Between first end.
In conjunction with accompanying drawing
1
And accompanying drawing
3
Shown in, when described vehicle frame
10
When expanded position, described locking mechanism
4
Locking, described sticking department
461
Insert locked groove
4121
And lockhole
45
In, described first support
1
, the second support
2
And the 3rd support
3
Relatively launch, return unit
48
Do not stress, be in original state.
In conjunction with accompanying drawing
3
And accompanying drawing
4
Shown in, when described vehicle frame
10
When during folding position, expansion and folding, described locking mechanism
4
Unlock, described sticking department
461
Depart from locked groove
4121
And lockhole
45
, described first support
1
, the second support
2
And the 3rd support
3
Can relatively rotate and draw close mutually, return unit
48
It is in compressive state.
When this children trolley folds, to the right, the direction pull operation part of upper, upper right or bottom right
47
, drive locking piece
46
The second end along deviating from fore shell
411
Direction rotate, locking piece
46
The first end towards fore shell
411
Rotate, sticking department
461
Depart from locked groove
4121
And lockhole
45
, return unit
48
Compression, three connectors can relatively rotate, the i.e. first support
1
, the second support
2
, the 3rd support
3
Between can relatively rotate, when turning to its phase and drawing close, vehicle frame
10
Folding completes.When this children trolley launches, by the first support
1
, the second support
2
, the 3rd support
3
It is expanded to relevant position, return unit
48
Reset force promote sticking department
461
Insert locked groove
4121
And lockhole
45
In, by housing
41
Lock mutually with three connectors.
Around the present invention addresses, be all with the vehicle frame of this children trolley concrete bearing definition residing when expanded position up and down.Specifically, accompanying drawing is front and back corresponded respectively to
1
" left " " right " of middle paper, corresponds respectively to accompanying drawing up and down
1
Middle paper " on " D score, left and right directions is then corresponding to along the direction being perpendicular to paper.
Above-described embodiment is only technology design and the feature that the present invention is described, is a kind of preferred embodiment, its object is to allow person skilled in the art will appreciate that present disclosure and to implement according to this, can not limit the scope of the invention with this.All equivalences made according to the Spirit Essence of the present invention change or modify, and all should cover within protection scope of the present invention.
Claims (10)
1. a children trolley, including have the vehicle frame (10) of expanded position and folding position, it is arranged at front component (20) and the wheel assembly (30) of described vehicle frame (10) bottom, described vehicle frame (10) includes the first support (1), second support (2), 3rd support (3) and for described vehicle frame (10) is locked in the locking mechanism (4) of expanded position, described first support (1), second support (2), it is separately installed with described front component (20) and wheel assembly (30) on two parts in 3rd support (3), another parts are used as the push rod of this children trolley, it is characterized in that:
nullDescribed locking mechanism (4) includes housing (41)、It is rotationally connected with the locking piece (46) of described second support (2)、It is rotationally connected with the operating parts (47) of described locking piece (46) one end，Described first support (1)、Second support (2)、3rd support (3) phase co-rotation connects or connects in relative rotation two-by-two，Described first support (1)、Second support (2)、At least described first support (1) in 3rd support (3)、All offer porose on 3rd support (3) or be respectively formed on outward extending projection at edge，Hole described in two is connected and overlaps to form limiting section to form lockhole (45) or the projection described in two，Described locking piece (46) other end has the sticking department (461) matching with described lockhole (45) or limiting section，When locking mechanism is in the lock state，The sticking department (461) of locking piece (46) inserts in lockhole (45) or offsets with the sidepiece of limiting section，When locking mechanism is in released state，Sticking department (461) departs from lockhole (45) or limiting section，Make the first support (1)、Second support (2)、3rd support (3) is released，Described operating parts (47) has the first contact site (472) that can contact with described housing (41)，When rotating described operating parts，Described first contact site (472) abuts housing (41) thus drives locking piece (46) to rotate and make described sticking department (461) depart from described lockhole (45) or described limiting section.
2. children trolley according to claim 1, it is characterized in that: when connecting such as the first support (1), the second support (2), the 3rd support (3) phase co-rotation, described lockhole (45) deviates the first support (1), the second support (2), the center of rotation of the 3rd support (3).
3. children trolley according to claim 1, it is characterised in that: described first contact site (472) is in outwardly arc.
4. children trolley according to claim 1, it is characterized in that: described operating parts (47) has second contact site (473) contacting with described second support (2), and described second contact site (473) is in outwardly arc.
5. children trolley according to claim 1, it is characterised in that: described locking mechanism (4) includes the return unit (48) being used for resetting described sticking department (461) being arranged between described locking piece (46) and described housing (41).
null6. children trolley according to claim 1，It is characterized in that: described first support (1) has one first connector (42)，Described second support (2) has one second connector (43)，Described 3rd support (3) has one the 3rd connector (44)，Described housing (41) is hollow，Described first connector (42)、Second connector (43)、3rd connector (44) is positioned at described housing (41)，Hole described in two is opened on the first connector (42) and the 3rd connector (44) respectively，Also a hole is offered on described second connector (43)，First connector (42)、Second connector (43) is connected with the hole on the 3rd connector (44) to form described lockhole (45)，A locked groove (4121) matching with described sticking department (46) is offered on described housing (41)，When described vehicle frame (10) is at expanded position，Described sticking department (461) inserts in described lockhole (45) and locked groove (4121).
7. children trolley according to claim 6, it is characterised in that: described first connector (42), the second connector (43), the 3rd connector (44) are rotationally connected with described housing (41) by second pivot (413).
8. children trolley according to claim 1, it is characterized in that: when described vehicle frame (1) is at expanded position, described first contact site (472) contacts with housing near one end of described locking piece (46), when described vehicle frame is in folding position, described first contact site (472) contacts with housing away from one end of described locking piece (46).
9. the locking mechanism for children trolley, this children trolley includes the vehicle frame (10) with expanded position and folding position, it is arranged at front component (20) and the wheel assembly (30) of described vehicle frame (10) bottom, described vehicle frame (10) includes the first support (1), second support (2), 3rd support (3), described first support (1), second support (2), it is separately installed with described front component (20) and wheel assembly (30) on two parts in 3rd support (3), another parts are used as the push rod of this children trolley, it is characterized in that:
nullDescribed locking mechanism (4) includes housing (41)、It is rotationally connected with the locking piece (46) of described second support (2)、It is rotationally connected with the operating parts (47) of described locking piece (46) one end，Described first support (1)、Second support (2)、3rd support (3) phase co-rotation connects or connects in relative rotation two-by-two，Described first support (1)、Second support (2)、At least described first support (1) in 3rd support (3)、All offer porose on 3rd support (3) or on edge, be formed with outward extending projection，Hole described in two is connected to form lockhole (45) or two described projections overlap formation limiting section，Described locking piece (46) other end has the sticking department (461) matching with described lockhole (45) or limiting section，When locking mechanism is in the lock state，The sticking department (461) of locking piece (46) inserts in lockhole (45) or offsets with the sidepiece of limiting section，When locking mechanism is in released state，Sticking department (461) departs from lockhole (45) or limiting section，Make the first support (1)、Second support (2)、3rd support (3) is released，Described operating parts (47) has the first contact site (472) that can contact with described housing (41)，When rotating described operating parts，Described first contact site (472) abuts housing (41) thus drives locking piece (46) to rotate and make described sticking department (461) depart from described lockhole (45) or limiting section.
10. locking mechanism according to claim 9, it is characterised in that: described first contact site (472) is in outwardly arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410563548.7A CN104326007B (en) | 2014-10-21 | 2014-10-21 | Locking mechanism and children trolley for children trolley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410563548.7A CN104326007B (en) | 2014-10-21 | 2014-10-21 | Locking mechanism and children trolley for children trolley |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104326007A CN104326007A (en) | 2015-02-04 |
| CN104326007B true CN104326007B (en) | 2016-11-09 |
Family
ID=52400853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410563548.7A Active CN104326007B (en) | 2014-10-21 | 2014-10-21 | Locking mechanism and children trolley for children trolley |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104326007B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6991248B2 (en) * | 2003-05-05 | 2006-01-31 | Dynamic Brands, Llc | Folding baby stroller system and method |
| CN2868804Y (en) * | 2005-12-31 | 2007-02-14 | 好孩子儿童用品有限公司 | Children's carrier |
| US8226110B2 (en) * | 2009-10-08 | 2012-07-24 | Unique Product & Design Co., Ltd. | Foldable joint for baby stroller |
| CN202152060U (en) * | 2011-06-15 | 2012-02-29 | 好孩子儿童用品有限公司 | Swivel joint and children's vehicle with the same |
| CN202879562U (en) * | 2012-10-18 | 2013-04-17 | 昆山威凯儿童用品有限公司 | Folding type baby stroller |
| CN203318470U (en) * | 2013-05-09 | 2013-12-04 | 中山市隆成日用制品有限公司 | Baby carriage framework joint |
| CN204196974U (en) * | 2014-10-21 | 2015-03-11 | 好孩子儿童用品有限公司 | For lockout mechanism and the children trolley of children trolley |
-
2014
- 2014-10-21 CN CN201410563548.7A patent/CN104326007B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104326007A (en) | 2015-02-04 |
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