CN114148397A

CN114148397A - Children's barrow

Info

Publication number: CN114148397A
Application number: CN202111669345.2A
Authority: CN
Inventors: 蔡守进
Original assignee: Jiangsu Little Dinosaur Children's Products Group Co ltd
Current assignee: Jiangsu Little Dinosaur Children's Products Group Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-03-08

Abstract

The invention discloses a stroller and relates to the technical field of children products. The children's shallow includes a children's shallow, which comprises a bracket, the support includes front wheel bracket component, rear wheel bracket component, push rod subassembly around first axis pin joint, children's shallow still includes drive mechanism, and drive mechanism includes duplicate gear, duplicate gear around with the second axis pin joint that the parallel interval of first axis set up in the front wheel bracket component, be equipped with on the push rod subassembly with first axis is the first gear portion of rotation center, be equipped with on the rear wheel bracket component with first axis is the second gear portion of rotation center, first gear portion second gear portion with duplicate gear one-to-one meshing. The folding and unfolding operation of the baby stroller is convenient, and the structure is simple and compact.

Description

Children's barrow

Technical Field

The invention relates to the technical field of children products, in particular to a stroller.

Background

At present, the stroller is used as a 'vehicle' for children, needs to be pushed and pulled by manpower to walk, and becomes an indispensable object for children in the growth process. The stroller on the market can be folded or unfolded generally, a part of the strollers are provided with the link mechanisms generally, the link mechanisms can support the stroller frame to keep the stroller frame in a stable unfolding state and can also realize folding and unfolding linkage of the stroller, and the stroller provided with the link mechanisms is complex in structure generally.

Disclosure of Invention

The invention aims to provide a stroller, which is convenient to fold and unfold and has a simple and compact structure.

In order to achieve the purpose, the invention adopts the following technical scheme:

a stroller comprising a support including a front wheel bracket assembly, a rear wheel bracket assembly, a push rod assembly pinned about a first axis, the stroller further comprising:

drive mechanism, including the duplicate gear, the duplicate gear around with the second axis pin joint that the parallel interval of first axis set up in front wheel bracket component, be equipped with on the push rod subassembly with first axis is the first gear portion of rotation center, be equipped with on the rear wheel bracket component with first axis is the second gear portion of rotation center, first gear portion second gear portion with the duplicate gear meshing one by one.

Optionally, the support further comprises a seat base, and the transmission mechanism further comprises:

the linkage assembly comprises a sliding block and a connecting rod structure, the sliding block is connected to the front wheel support assembly in a sliding mode, a rack meshed with one gear in the duplicate gear is arranged on the sliding block, and the connecting rod structure is arranged on the sliding block, the front wheel support assembly and the seat base.

Optionally, the link structure comprises:

the two ends of the connecting rod are respectively hinged to the seat and the front wheel support assembly, and one end, away from the connecting rod, of the seat is hinged to the sliding block.

Optionally, the front wheel bracket assembly is convexly provided with a cam portion, the number of the duplicate gears is two, and the two duplicate gears are respectively arranged on two sides of the cam portion.

Optionally, the two second gear parts are located outside the two first gear parts.

Optionally, the first gear part and the push rod assembly are integrally formed;

and/or, the second gear part and the rear wheel bracket component are integrally formed.

Optionally, still include and be used for with the support locking at the locking mechanical system who expandes the state, be provided with in the front wheel bracket component first spout and with first spout intercommunication and be the second spout that the contained angle set up, be provided with the sticking department in the push rod subassembly, locking mechanical system includes:

the first bolt is connected in the first sliding groove in a sliding manner;

the elastic piece is arranged in the first sliding groove so that the first lock tongue can be inserted into or separated from the locking part; and

the second lock tongue is connected in the second sliding groove in a sliding mode, a first limiting hole is formed in the middle of the first lock tongue, a second limiting hole is formed in the second lock tongue, a third limiting hole is formed in the front wheel bracket assembly, and the driving pin penetrates through the third limiting hole, the second limiting hole and the first limiting hole;

the sliding block is provided with a third sliding groove, and when the elastic piece drives the first lock tongue to extend out of the first sliding groove, the first lock tongue can drive the second lock tongue to extend into the third sliding groove so as to lock the sliding block.

Optionally, a fourth limiting hole consistent with the extending direction of the first sliding groove is formed in the first lock tongue, and the locking mechanism further includes:

the position of the fixing seat corresponds to the first axis, the fixing seat is fixed in the first sliding groove and is positioned in the fourth limiting hole, one end of the elastic piece is abutted to the fixing seat, and the other end of the elastic piece is abutted to the inner wall of the fourth limiting hole.

Optionally, the putter assembly includes:

the push rod support is in pin joint with the front wheel bracket assembly and the rear wheel bracket assembly;

the push rod support is provided with a sleeve, one end of the sleeve is inserted into the push rod support, the other end of the sleeve is sleeved on the push rod, and the push rod can slide along the extension direction of the sleeve; and

a retaining member connected to the sleeve and the push rod, the retaining member being capable of retaining the push rod within the sleeve.

Optionally, a foldable vehicle seat is further included, the vehicle seat being detachably connected to the seat base.

The invention has the beneficial effects that:

when the support needs to be folded or unfolded, the push rod assembly is rotated, the first gear part on the push rod assembly rotates around the first axis, the first gear part drives the duplicate gear to rotate around the second axis, the duplicate gear drives the second gear part meshed with the duplicate gear to rotate, so that the rear wheel support assembly rotates around the first axis, the folding or unfolding of the rear wheel support assembly relative to the front wheel support assembly is realized, the support is in a folding or unfolding state through the linkage of the transmission mechanism with the seat, the front wheel support assembly, the rear wheel support assembly and the push rod assembly, the operation is more convenient, more link mechanisms are avoided, the size of the support can be reduced, and the appearance is more compact.

Drawings

FIG. 1 is a schematic side view of a stroller according to an embodiment of the present invention;

FIG. 2 is a perspective view of the stroller with the seat removed in accordance with the present invention;

FIG. 3 is an exploded view of a drive mechanism provided in accordance with an embodiment of the present invention;

FIG. 4 is a perspective view of the transmission mechanism of the present invention with one side of the second gear portion removed;

FIG. 5 is a cross-sectional view of the transmission mechanism provided in accordance with an embodiment of the present invention in a first position;

FIG. 6 is a cross-sectional view of the transmission mechanism provided in accordance with an embodiment of the present invention in a second position;

FIG. 7 is a cross-sectional view of a locking mechanism provided in accordance with an embodiment of the present invention;

fig. 8 is a cross-sectional view of a first bolt of the locking mechanism in a compressed state according to an embodiment of the present invention;

FIG. 9 is a perspective view of a locking mechanism provided by an embodiment of the present invention;

FIG. 10 is a semi-collapsed view of the stroller provided in accordance with an embodiment of the present invention;

fig. 11 is a fully folded view of the stroller of the present invention.

In the figure:

1. a support; 11. a front wheel carrier assembly; 111. a cam portion; 112. a front wheel bracket; 113. a front wheel; 114. a front wheel support base; 115. a first chute; 116. a second chute; 117. a third limiting hole; 12. a rear wheel carrier assembly; 121. a second gear portion; 122. a rear wheel support; 123. a rear wheel; 124. a rear wheel support base; 13. a push rod assembly; 131. a first gear portion; 132. a push rod support; 133. a sleeve; 134. a push rod; 135. a locking portion; 14. a seat base;

2. a locking mechanism; 21. a first bolt; 211. a first limit hole; 212. a second limiting hole; 213. a fourth limiting hole; 214. a fifth limiting hole; 22. an elastic member; 23. a second bolt; 24. a drive pin; 25. a fixed seat; 26. a limiting rod;

3. a transmission mechanism; 31. a duplicate gear; 32. a linkage assembly; 321. a slider; 3211. a third chute; 322. a connecting rod structure; 3221. a connecting rod;

4. a vehicle seat.

Detailed Description

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly and encompass, for example, both fixed and removable connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in direct contact with the second feature but being in contact with the second feature by another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings of fig. 1-11.

In the present embodiment, a stroller is provided, as shown in fig. 1 to 3, which includes a support frame 1 and a transmission mechanism 3. The frame 1 comprises a front wheel bracket assembly 11, a rear wheel bracket assembly 12 and a push rod assembly 13 which are pinned around a first axis. It can be understood that the front wheel support assembly 11, the rear wheel support assembly 12 and the push rod assembly 13 are pinned by a pin penetrating through the three.

As shown in fig. 2 to 6, the transmission mechanism 3 includes a dual gear 31 and a linkage assembly 32, the dual gear 31 is pinned to the front wheel bracket assembly 11 around a second axis parallel to the first axis at an interval, the push rod assembly 13 is provided with a first gear portion 131 using the first axis as a rotation center, the rear wheel bracket assembly 12 is provided with a second gear portion 121 using the first axis as a rotation center, and the first gear portion 131 and the second gear portion 121 are meshed with the dual gear 31 one by one.

When the support 1 needs to be folded or unfolded, the push rod assembly 13 is rotated, the first gear portion 131 on the push rod assembly 13 rotates around the first axis, the first gear portion 131 drives the dual gear 31 to rotate around the second axis, and the dual gear 31 drives the second gear portion 121 engaged with the dual gear to rotate, so that the rear wheel support assembly 12 rotates around the first axis, and the folding or unfolding of the rear wheel support assembly 12 relative to the front wheel support assembly 11 is realized. Through 3 linkage front wheel bracket component 11, rear wheel bracket component 12 of gear drive mechanism, push rod subassembly 13, make support 1 be in folding or the state of expanding, it is more convenient to operate, has avoided setting up more link mechanism, can reduce support 1's volume, makes the outward appearance compacter.

Specifically, the frame 1 further includes a seat 14, the transmission mechanism 3 further includes a linkage assembly 32, the linkage assembly 32 includes a sliding block 321 and a link structure 322, the sliding block 321 is slidably connected to the front wheel support assembly 11, a rack engaged with one of the dual gears 31 is disposed on the sliding block 321, and the link structure 322 is disposed on the sliding block 321, the front wheel support assembly 11 and the seat 14. It can be understood that the dual gear 31 can drive the sliding block 321 to slide along the front wheel bracket assembly 11 when rotating, so as to enable the seat 14 to be unfolded or folded through the link structure 322.

Further, the link structure 322 includes a link 3221, two ends of the link 3221 are respectively hinged to the seat 14 and the front wheel bracket assembly 11, and one end of the seat 14 away from the link 3221 is hinged to the sliding block 321. It can be understood that, when the sliding block 321 slides, the seat 14 can drive the connecting rod 3221 to swing around the hinge shaft of the connecting rod 3221 connected to the front wheel bracket assembly 11, so that the seat 14 can be unfolded or folded.

As shown in fig. 3, the cam portion 111 is convexly provided on the front wheel carrier assembly 11, two duplicate gears 31 are provided, two duplicate gears 31 are respectively provided on two sides of the cam portion 111, accordingly, a first gear portion 131 is respectively provided on the push rod assembly 13 corresponding to each duplicate gear 31, and a second gear portion 121 is respectively provided on the rear wheel carrier assembly 12 corresponding to each duplicate gear 31. Like this, both can make the both sides of children's shallow keep balance when launching or folding the children's shallow in this embodiment, and it is smooth and easy to launch or fold to be convenient for, can make the both sides atress of children's shallow balanced again, improves holistic stability.

In order to keep the overall structure of the stroller stable, the width of the rear wheel bracket assembly 12 is generally larger than the width of the bracket 1 assembly of the push rod 134, and in this embodiment, preferably, the two first gear parts 131 are located outside the two second gear parts 121, which is beneficial to make the overall structure of the stroller in this embodiment more compact.

In some alternative embodiments, as shown in fig. 2, the front wheel bracket assembly 11 includes a front wheel bracket 112, a front wheel 113 disposed on the front wheel bracket 112, and a front wheel bracket seat 114, the front wheel bracket seat 114 is disposed at an end of the front wheel bracket 112 facing away from the front wheel 113, and both the first axis and the second axis are disposed on the front wheel bracket seat 114. Optionally, the front wheel support 112 is a T-shaped structure. In detail, two front wheels 113 are provided, and the two front wheels 113 are respectively provided at both ends of the cross bar of the front wheel bracket 112. Further, still be connected with the footboard on the front wheel support 112, when children sat in the children's shallow of this embodiment, can put both feet on the footboard, improve and use experience.

In some alternative embodiments, as shown in fig. 2, the rear wheel support assembly 12 includes two rear wheel supports 122, a rear wheel 123 disposed at the bottom of the two rear wheel supports 122, and two rear wheel support bases 124, the two rear wheel supports 122 are distributed in a splayed shape, each rear wheel support base 124 is detachably connected to the top of one rear wheel support 122, and the position of the rear wheel support base 124 corresponds to the first axis. The structure of the rear wheel 123 is prior art and will not be described in detail herein.

In some alternative embodiments, as shown in fig. 2, 7 and 8, pushrod assembly 13 includes pushrod support 132, sleeve 133, pushrod 134 and a retaining member, pushrod support 132 being pinned to front wheel carriage assembly 11 and rear wheel carriage assembly 12. One end of the sleeve 133 is inserted into the push rod support 132, and the other end is sleeved on the push rod 134, and the push rod 134 can slide along the extending direction of the sleeve 133. A retaining member is coupled to sleeve 133 and to pushrod 134, and is capable of retaining pushrod 134 within sleeve 133. The structure of sleeve 133, the structure of pushrod 134, and the connection of the locking member to sleeve 133 and pushrod 134 are well known in the art and will not be described in detail herein.

In particular, the first gear part 131 and the push rod assembly 13 are integrally formed, which is advantageous for improving the connection strength of the first gear part 131 and the push rod assembly 13. In detail, the first gear part 131 and the push rod supporter 132 are integrally molded. The first gear part 131 and the push rod supporter 132 may be integrally formed by injection molding.

Preferably, the second gear portion 121 and the rear wheel bracket assembly 12 are integrally formed, which is beneficial to improving the connection strength of the second gear portion 121 and the rear wheel bracket assembly 12. In detail, the second gear part 121 and the rear wheel holder base 124 are integrally formed. The second gear part 121 and the rear wheel holder base 124 may be integrally formed by injection molding.

As shown in fig. 7 to 9, the stroller in this embodiment further includes a locking mechanism 2 for locking the bracket 1 in the unfolded state, a first sliding groove 115 and a second sliding groove 116, which is communicated with the first sliding groove 115 and forms an included angle with the first sliding groove, are disposed in the front wheel bracket assembly 11, a locking portion 135 is disposed in the push rod assembly 13, and the locking mechanism 2 includes a first locking tongue 21, an elastic member 22, a second locking tongue 23, and a driving pin 24. The first latch bolt 21 is slidably connected within the first slide slot 115. The elastic member 22 is disposed in the first sliding groove 115 to enable the first bolt 21 to be inserted into or separated from the locking part 135. In some optional embodiments, the elastic element 22 is a spring, the second lock tongue 23 is slidably connected in the second sliding groove 116, the middle of the first lock tongue 21 is provided with a first limiting hole 211, the second lock tongue 23 is provided with a second limiting hole 212, the front wheel bracket assembly 11 is provided with a third limiting hole 117, and the driving pin 24 penetrates through the third limiting hole 117, the second limiting hole 212 and the first limiting hole 211. The sliding block 321 is provided with a third sliding groove 3211, and when the elastic element 22 drives the first bolt 21 to extend out of the first sliding groove 115, the first bolt 21 can drive the second bolt 23 to extend into the third sliding groove 3211 to lock the sliding block 321. In detail, when the frame 1 is in the unfolded state, the first bolt 21 is inserted into the locking portion 135, so that the push rod assembly 13 cannot rotate relative to the front wheel bracket assembly 11, and the frame 1 is kept in the unfolded state. When the first bolt 21 is pressed or the elastic element 22 is compressed, the first bolt 21 is moved out of the locking part 135, when the first bolt 21 moves, the second bolt 23 slides from the third sliding groove 3211 through the matching of the driving pin 24, the first limit hole 211, the second limit hole 212 and the third limit hole 117, the limit on the sliding block 321 is released, the push rod assembly 13 can rotate around the first axis, and the folding of the bracket 1 and the seat base 14 is realized under the action of the transmission mechanism 3. When the pressure on the elastic element 22 and the first bolt 21 is released, the elastic element 22 drives the first bolt 21 to reset, and the first bolt 21 drives the second bolt 23 to reset, so that the bracket 1 and the seat 14 can be kept in the unfolded state.

In this embodiment, preferably, a fourth limiting hole 213 is formed in the first tongue 21, the extending direction of which is the same as the extending direction of the first sliding groove 115, the locking mechanism 2 further includes a fixing seat 25, the fixing seat 25 is fixed in the first sliding groove 115 at a position corresponding to the first axis and is located in the fourth limiting hole 213, one end of the elastic element 22 abuts against the fixing seat 25, and the other end abuts against the inner wall of the fourth limiting hole 213. The first bolt 21 can be limited by the fixing seat 25, and the elastic element 22 can be pre-installed in the fourth limiting hole 213, so that the locking mechanism 2 can be conveniently installed.

Furthermore, the locking mechanism 2 further includes a limiting rod 26, a fifth limiting hole 214 is formed in one side of the first limiting hole 211 deviating from the fourth limiting hole 213, and the limiting rod 26 penetrates through the front wheel bracket assembly 11 and penetrates through the fifth limiting hole 214. The stopper rod 26 can restrict the first lock tongue 21.

The stroller in this embodiment further comprises a foldable seat 4, the seat 4 being detachably connected to the seat 14. The saddle 4 is prior art and its specific structure will not be described in detail herein.

In the semi-folded state of the stroller shown in fig. 10 and the fully folded state of the stroller shown in fig. 11, the folding operation of the stroller in this embodiment comprises the following steps:

the locking relationship between the push rod 134 and the sleeve 133 is unlocked by the locking piece, the push rod 134 slides in the sleeve 133 until the push rod 134 is exposed to the shortest length, the push rod 134 presses the first lock tongue 21 or the lock tongue is moved out from the locking part 135 in other modes, then the push rod assembly 13 is turned, the first gear part 131 rotates around the first axis, the dual gear 31 is driven by the first gear part 131 to rotate around the second axis, the dual gear 31 simultaneously drives the sliding block 321 to slide and the second gear part 121 to rotate, and then the folding of the bracket 1 is completed.

The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.

Claims

1. A stroller comprising a frame (1), wherein the frame (1) comprises a front wheel frame assembly (11), a rear wheel frame assembly (12), a push rod assembly (13) pinned about a first axis, the stroller further comprising:

drive mechanism (3), including duplicate gear (31), duplicate gear (31) around with the second axis pin joint that the parallel interval of first axis set up in front wheel bracket component (11), be equipped with on push rod subassembly (13) with first axis is first gear part (131) of rotation center, be equipped with on rear wheel bracket component (12) with first axis is second gear part (121) of rotation center, first gear part (131) second gear part (121) with duplicate gear (31) mesh one by one.

2. Child stroller according to claim 1, characterized in that the support (1) further comprises a seat (14), the transmission mechanism (3) further comprising:

linkage subassembly (32), including slider (321) and link structure (322), slider (321) sliding connection in front wheel bracket component (11), be equipped with on slider (321) with the rack of gear engagement in duplicate gear (31), link structure (322) set up in slider (321), front wheel bracket component (11) with seat (14).

3. Child stroller according to claim 2, characterized in that the link structure (322) comprises:

the two ends of the connecting rod (3221) are respectively hinged to the seat base (14) and the front wheel support assembly (11), and one end, away from the connecting rod (3221), of the seat base (14) is hinged to the sliding block (321).

4. The stroller of claim 2, wherein the front wheel bracket assembly (11) is provided with a cam portion (111) in a protruding manner, and the dual gear (31) is provided in two, and the two dual gears (31) are respectively provided on two sides of the cam portion (111).

5. Child stroller according to claim 4, characterized in that the two second gear parts (121) are located outside the two first gear parts (131).

6. Child stroller according to claim 2, characterized in that the first gear part (131) and the push rod assembly (13) are integrally formed;

and/or the second gear part (121) and the rear wheel bracket assembly (12) are integrally formed.

7. The stroller of claim 2, further comprising a locking mechanism (2) for locking the bracket (1) in the unfolded state, wherein a first sliding slot (115) and a second sliding slot (116) which is communicated with the first sliding slot (115) and arranged at an included angle are arranged in the front wheel bracket assembly (11), a locking portion (135) is arranged in the push rod assembly (13), and the locking mechanism (2) comprises:

a first bolt (21) slidably connected in the first sliding groove (115);

an elastic member (22) disposed in the first sliding groove (115) to enable the first latch tongue (21) to be inserted into or separated from the locking part (135); and

the second lock bolt (23) is connected in the second sliding groove (116) in a sliding mode, a first limiting hole (211) is formed in the middle of the first lock bolt (21), a second limiting hole (212) is formed in the second lock bolt (23), a third limiting hole (117) is formed in the front wheel bracket assembly (11), and the driving pin (24) penetrates through the third limiting hole (117), the second limiting hole (212) and the first limiting hole (211);

a third sliding groove (3211) is formed in the sliding block (321), when the elastic piece (22) drives the first bolt (21) to extend out of the first sliding groove (115), the first bolt (21) can drive the second bolt (23) to extend into the third sliding groove (3211) to lock the sliding block (321).

8. The stroller of claim 7, wherein the first latch tongue (21) has a fourth limiting hole (213) formed therein, the fourth limiting hole extending in the same direction as the first sliding groove (115), and the locking mechanism (2) further comprises:

and the position of the fixing seat (25) corresponds to the first axis, the fixing seat is fixed in the first sliding groove (115) and is positioned in the fourth limiting hole (213), one end of the elastic piece (22) is abutted against the fixing seat (25), and the other end of the elastic piece is abutted against the inner wall of the fourth limiting hole (213).

9. Child stroller according to any of claims 1-6, characterized in that the push bar assembly (13) comprises:

a push rod support (132) pinned to the front wheel carrier assembly (11) and the rear wheel carrier assembly (12);

the push rod type telescopic handle comprises a sleeve (133) and a push rod (134), wherein one end of the sleeve (133) is inserted into the push rod support (132), the other end of the sleeve (133) is sleeved on the push rod (134), and the push rod (134) can slide along the extension direction of the sleeve (133); and

a retaining member connected to the sleeve (133) and the push rod (134), the retaining member being capable of retaining the push rod (134) within the sleeve (133).

10. Child stroller according to any of the claims 1-6, further comprising a foldable seat (4), said seat (4) being detachably connected to said seat (14).