CN115520261A - Baby stroller with front and rear wheel set switching structure - Google Patents

Abstract

The invention discloses a baby stroller with a switching structure of front and rear wheel sets, comprising: the device comprises a frame, a push handle frame, a wheel mechanism, a central connecting unit, a wheel set switching component and a wheel orientation component; the push handle frame is rotatably arranged on the central connecting unit; during the process that the push handle frame rotates relative to the central connecting unit, the wheel orientation component at the bottom of the front leg rod or the rear leg rod can work through the wheel set switching component. According to the invention, a user does not need to turn the whole baby stroller, and only needs to rotate the push handle frame to the other side opposite to the stroller frame in a breaking manner, so that the front and rear wheel sets can be switched to operate in the opposite directions and move forwards, and the baby stroller is more convenient and flexible to use.

Description

Baby stroller with front and rear wheel set switching structure

Technical Field

The invention relates to the technical field of baby strollers, in particular to a baby stroller with a switching structure of front and rear wheel sets.

Background

The baby stroller is a baby's "vehicle" and can be moved by a person in assistance with pushing or pulling. In the existing baby stroller, the front wheel group is generally a steering wheel and can rotate around a connecting shaft; the rear wheel set is generally a driving wheel, rotates along the advancing direction of the frame and cannot rotate, but is provided with a braking device in a matching way, and after the stroller is locked, the stroller cannot move back and forth. However, the control mode of this kind of baby's shallow is comparatively single, if need to transfer the direction, needs to turn to baby's shallow whole, just can control the direction and continue to move forward after the rotation of half a circle of front wheel group. When the baby stroller is used in a bedroom or in some narrow places, the space cannot meet the requirement that the baby stroller is difficult to move out when the baby stroller is turned, and the use is inconvenient.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a baby stroller with a switching structure of front and rear wheel sets.

The technical scheme adopted by the embodiment of the invention for solving the technical problem is as follows: a stroller having a front-rear wheel set switching configuration, comprising: the device comprises a frame, a push handle frame, a wheel mechanism, a central connecting unit, a wheel set switching component and a wheel orientation component;

the frame comprises a front leg rod and a rear leg rod; the front leg rod and the rear leg rod are both connected to the central connecting unit; the wheel mechanism comprises a wheel carrier and a roller, the roller is arranged on the wheel carrier in a rolling way, and the wheel carrier is rotatably arranged at the bottom of the front leg rod or the rear leg rod; the wheel orientation assembly is arranged at the bottom of the front leg rod and the rear leg rod and can lock the wheel carrier;

the push handle frame is rotatably arranged on the central connecting unit; and in the process that the push handle frame rotates relative to the central connecting unit, the wheel orientation assembly at the bottom of the front leg rod or the rear leg rod can work through the wheel set switching assembly.

Optionally, the wheel set switching assembly comprises a switching swinging member, two switching telescopic push blocks and a switching inhaul cable assembly; the central connecting unit is provided with a central working cavity; the switching swinging piece is rotatably arranged in the central working cavity; the two opposite sides of the switching swinging piece are respectively connected with a switching inhaul cable assembly, and the switching inhaul cable assemblies on the two sides are respectively connected with the wheel orientation assemblies at the bottoms of the front leg rod and the rear leg rod;

the two switching telescopic push blocks are arranged on two opposite sides of the switching swinging piece; the push handle frame is provided with a rotating convex part; in the process that the push handle frame rotates relative to the central connecting unit, the rotating convex part can push one of the switching telescopic pushing blocks, the switching telescopic pushing block can be abutted and push the switching swinging piece to move, and the wheel orientation assembly works through the switching inhaul cable assembly.

Optionally, the central connection unit includes a central connection base and a central connection cover; the central working cavity is formed by surrounding the central connecting seat and the central connecting cover; the center connecting cover and the center connecting base are provided with a rotating center;

one end of the push handle frame close to the central connecting unit is provided with a push handle rotating seat; the push handle rotating seat is arranged outside the central connecting cover and can rotate around the rotating center; the rotating convex part is arranged on one side of the push handle rotating seat close to the central connecting cover;

the switching telescopic push block is slidably arranged on the central connecting seat, and one end of the switching telescopic push block can extend out of the central connecting cover and is close to the push handle rotating seat; in the process that the push handle rotating seat rotates relative to the central connecting unit, the rotating convex part can enable the switching telescopic pushing block to be pressed into the central working cavity, and the switching telescopic pushing block can be abutted and push the switching swinging piece to move.

Optionally, the switching telescopic pushing block is arranged in a prismatic structure and comprises an upper abutting inclined plane and a lower abutting inclined plane; the upper abutting inclined plane can abut against the rotating convex part; the lower abutment slope may abut against the switching swing member.

Optionally, a push handle unlocking pressing block is arranged at the top of the push handle frame; the push handle rotating seat is provided with a push handle unlocking block and a push handle locking block; inclined abutting surfaces matched with each other are arranged between the push handle locking block and the push handle unlocking block; an unlocking inhaul cable assembly is arranged between the push handle unlocking block and the push handle unlocking pressing block; the push handle locking block can lock the push handle rotating seat;

the push handle unlocking pressing block is pressed, the push handle unlocking block can move through the unlocking inhaul cable assembly, the push handle unlocking block can be abutted to enable the push handle locking block to move towards the direction far away from the push handle rotating seat, and therefore locking of the push handle locking block and the push handle rotating seat is relieved.

Optionally, the outer edge wall of the push handle rotating seat is arranged in a cylindrical structure, and the rotating convex part is located at the outer edge of the push handle rotating seat; the central connecting cover is provided with an annular limiting groove, and the rotating convex part can rotate in the annular limiting groove.

Optionally, the wheel orientation assembly comprises a positioning bolt and a locking spring; the positioning bolts are arranged at the bottoms of the front leg rod and the rear leg rod and connected with the switching inhaul cable assembly; the wheel frame is provided with a positioning hole; the locking spring can enable the positioning bolt to be clamped into the positioning hole so as to lock the wheel carrier.

The invention has the beneficial effects that: the wheel frame is rotatably arranged on the front leg rod or the rear leg rod, when the wheel frame is not locked by the wheel orientation component, the wheel frame can rotate relative to the frame, and the wheel mechanism can be used as a steering wheel; when the wheel directional assembly locks the wheel frame, the wheel frame is static relative to the frame, and the wheel mechanism can be used as a driving wheel. The push handle frame rotates relative to the central connecting unit, so that the push handle frame rotates to a state close to the front leg rod or a state close to the rear leg rod, the wheel directional component at the bottom of the front leg rod or the rear leg rod can work correspondingly through the wheel set switching component, and the wheel mechanism is switched between the steering wheel and the driving wheel, so that the front wheel set and the rear wheel set are switched. According to the invention, a user does not need to turn the whole baby stroller, and only needs to rotate the push handle frame to the other side opposite to the stroller frame in a breaking manner, so that the front and rear wheel sets can be switched to operate in the opposite directions and move forwards, and the baby stroller is more convenient and flexible to use.

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible and comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view of the stroller showing the push handle frame rotated closer to the front leg bar;

FIG. 2 is a schematic view of the stroller shown in FIG. 1 with the push bar pivoted toward the rear leg bar;

FIG. 3 is an exploded view of the central connection unit of FIG. 1;

FIG. 4 is a schematic view of an assembly structure of the wheel set switching assembly and the center connecting seat in FIG. 3;

fig. 5 is an exploded view of the rear leg link and wheel mechanism of fig. 1.

Description of the main element symbols:

10. a frame; 11. a front leg rod; 12. a rear leg bar; 20. a handle pushing frame; 21. rotating the convex part; 22. a push handle rotating seat; 23. the push handle unlocks the push block; 24. a handle unlocking block is pushed; 25. a push handle locking block; 30. a wheel mechanism; 31. a wheel carrier; 32. a roller; 40. a central connection unit; 41. a central connecting seat; 42. a central connection cover; 421. an annular limiting groove; 43. a center of rotation; 50. a wheel set switching assembly; 51. switching the swinging member; 52. switching the telescopic push block; 521. an upper abutting inclined plane; 522. a lower abutment slope; 53. switching the inhaul cable assembly; 60. a wheel orientation assembly; 61. positioning a bolt; 62. positioning holes; 63. a locking spring; 70. a brake component.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, a plurality of means is two or more, and greater than, less than, more than, etc. are understood as excluding the present number, and greater than, less than, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings only for the convenience of description of the present invention and simplification of the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless explicitly defined otherwise, the terms "disposed," "mounted," "connected," and the like are to be understood in a broad sense, and for example, may be directly connected or indirectly connected through an intermediate; can be fixedly connected, can also be detachably connected and can also be integrally formed; may be a mechanical connection; either as communication within the two elements or as an interactive relationship of the two elements. The specific meaning of the above-mentioned words in the present invention can be reasonably determined by those skilled in the art in combination with the detailed contents of the technical solutions.

Examples

Referring to fig. 1 to 5, the stroller with a switching structure of front and rear wheel sets according to the present invention comprises: the device comprises a frame 10, a push handle frame 20, a wheel mechanism 30, a central connecting unit 40, a wheel set switching component 50 and a wheel orientation component 60;

the frame 10 includes a front leg rod 11 and a rear leg rod 12; the front leg shaft 11 and the rear leg shaft 12 are both connected to the center connection unit 40; the wheel mechanism 30 includes a wheel frame 31 and a roller 32, the roller 32 is mounted on the wheel frame 31 in a rolling manner, the wheel frame 31 is rotatably mounted on the bottom of the front leg rod 11 or the rear leg rod 12; the wheel orientation assembly 60 is disposed at the bottom of the front leg shaft 11 and the rear leg shaft 12, and can lock the wheel frame 31;

the handle-pushing frame 20 is rotatably mounted on the central connecting unit 40; during the rotation of the handle bar 20 with respect to the central connection unit 40, the wheel alignment assembly 60 at the bottom of the front leg shaft 11 or the rear leg shaft 12 can be operated by the wheel set switching assembly 50.

In the present invention, the wheel frame 31 is rotatably mounted on the front leg rod 11 or the rear leg rod 12, when the wheel orienting component 60 does not lock the wheel frame 31, the wheel frame 31 can rotate relative to the frame 10, and the wheel mechanism 30 can be used as a steering wheel; when wheel frame 31 is locked by wheel orienting component 60, wheel frame 31 is stationary relative to frame 10, and wheel mechanism 30 can be used as a driving wheel. By rotating the push handle 20 with respect to the center link unit 40, the push handle 20 is rotated to a position close to the front leg bar 11 or to a position close to the rear leg bar 12, and the wheel direction changing unit 60 at the bottom of the front leg bar 11 or the rear leg bar 12 is operated correspondingly by the wheel set changing unit 50, so that the wheel mechanism 30 is changed over from the steering wheel to the driving wheel, and the front wheel set and the rear wheel set are changed over. According to the baby stroller, a user does not need to turn the whole baby stroller, and only needs to rotate the push handle frame 20 to the other side opposite to the stroller frame 10, so that the front wheel set and the rear wheel set can be switched, and the baby stroller can be controlled to move forwards in the opposite direction, and the baby stroller is more convenient and flexible to use.

In the present embodiment, the wheel set switching assembly 50 includes a switching swing member 51, two switching telescopic pushing blocks 52 and a switching cable assembly 53; the central connection unit 40 is provided with a central working chamber; the switching swing member 51 is rotatably mounted in the central working chamber; two opposite sides of the switching swinging piece 51 are respectively connected with a switching cable assembly 53, and the switching cable assemblies 53 on the two sides are respectively connected with the wheel orientation assemblies 60 at the bottoms of the front leg rod 11 and the rear leg rod 12; two switching telescopic push blocks 52 are arranged on two opposite sides of the switching swinging member 51; the handle pushing frame 20 is provided with a rotating convex part 21; during the process of rotating the handle frame 20 relative to the central connection unit 40, the rotating protrusion 21 can push one of the switching telescopic pushing blocks 52, the switching telescopic pushing block 52 can abut against and push the switching swinging piece 51 to move, and the wheel orientation assembly 60 is operated through the switching cable assembly 53.

In a specific use process, when the handle pushing frame 20 rotates around the central connecting unit 40, the rotating convex part 21 can be aligned to push one of the switching telescopic pushing blocks 52 to move, the switching telescopic pushing block 52 can make the switching swinging piece 51 swing towards one side, so that the switching cable assembly 53 is stretched towards one side, the associated wheel orientation assembly 60 works, the wheel frame 31 of one pass of the front leg rod 11 or the rear leg rod 12 is locked to be used as a driving wheel, and the wheel frame 31 of the other side is not locked to be used as a steering wheel. When the handle frame 20 is rotated to the other side of the central connection unit 40, the other switching telescopic pushing block 52 is moved, so that the switching swinging piece 51 swings to the other side, and the switching cable assembly 53 associated with the other side works to realize the switching of the front and rear wheel sets.

In the present embodiment, the center connection unit 40 includes a center connection seat 41 and a center connection cover 42; the central working cavity is formed by surrounding a central connecting seat 41 and a central connecting cover 42; the center connection cover 42 and the center connection base 41 are provided with a rotation center 43; one end of the push handle frame 20 close to the central connecting unit 40 is provided with a push handle rotating seat 22; the push handle rotating seat 22 is arranged outside the central connecting cover 42 and can rotate around a rotating center 43; one side of the push handle rotating seat 22 close to the central connecting cover 42 is provided with a rotating convex part 21; the switching telescopic pushing block 52 is slidably mounted on the central connecting base 41, and one end of the switching telescopic pushing block 52 can extend out of the central connecting cover 42 and approach the push handle rotating base 22;

when the handle-pushing rotary base 22 rotates relative to the central connection unit 40, the switching telescopic push block 52 can be pressed into the central working cavity by rotating the convex part 21, and the switching telescopic push block 52 can abut against and push the switching swinging piece 51 to move. The switching telescopic push block 52 and the switching swinging piece 51 are arranged in the central working cavity to work. The central connecting cover 42, the central connecting base 41 and the main body of the push handle rotating base 22 are arranged in a disc-shaped structure in a stacked mode; the handle-pushing rotating base 22 can rotate around the rotating center 43 of the central connecting unit 40, and pushes one of the switching telescopic pushing blocks 52 through the rotating convex part 21, so that the associated switching swinging piece 51 and the switching cable assembly 53 work, and the switching of the front and rear wheel sets is realized.

In the present embodiment, the switching telescopic push block 52 is disposed in a prism structure, and includes an upper contact inclined plane 521 and a lower contact inclined plane 522; the upper abutment slope 521 can abut against the rotation protrusion 21; the lower abutment slope 522 may abut against the switching swing piece 51. The switching telescopic push block 52 is arranged in a prismatic mode, the upper portions of two sides above the switching telescopic push block 52 are abutted to the inclined plane 521, and the switching telescopic push block 52 can be pushed and pressed by rotating the convex part 21 to be close to the upper portion from two sides, so that the switching telescopic push block is sunk into the central working cavity; the lower abutting inclined plane 522 on the two sides of the lower part and the left side and the right side of the lower abutting inclined plane can both enable the pushing switching swinging piece 51 to move, so that the two switching telescopic pushing blocks 52 can be used by adopting the same spare and accessory parts, and the working process stability is higher.

In the present embodiment, the top of the push handle holder 20 is provided with a push handle unlocking pressing block 23; the push handle rotating seat 22 is provided with a push handle unlocking block 24 and a push handle locking block 25; inclined abutting surfaces matched with each other are arranged between the push handle locking block 25 and the push handle unlocking block 24; an unlocking cable assembly is arranged between the push handle unlocking block 24 and the push handle unlocking pressing block 23; the push handle locking block 25 can lock the push handle rotating seat 22; the push handle unlocking pressing block 23 is pressed, the push handle unlocking block 24 can be moved through the unlocking inhaul cable assembly, the push handle unlocking block 24 can be abutted, and the push handle locking block 25 can be moved towards the direction far away from the push handle rotating seat 22, so that the locking of the push handle locking block 25 and the push handle rotating seat 22 is released.

Those skilled in the art can arrange the push handle unlocking pressing block 23 and the unlocking cable assembly according to the use requirement; and will not be described in detail herein. The unlocking cable assembly can abut against the push handle unlocking block 24 and enable the push handle locking block 25 to move towards the direction far away from the push handle rotating seat 22 by pulling the push handle unlocking block 24, so that the push handle locking block 25 and the push handle rotating seat 22 are unlocked. For example, the push handle locking block 25 and the push handle rotating seat 22 can be directly locked by friction or a positioning column, and a locking spring 63 is arranged between the push handle unlocking block 24 and the central connecting unit 40.

In this embodiment, the outer edge wall of the push handle rotating seat 22 is arranged in a cylindrical structure, and the rotating convex part 21 is located at the outer edge of the push handle rotating seat 22; the central connection cover 42 is formed with an annular retaining groove 421, and the rotation protrusion 21 can rotate in the annular retaining groove 421. The annular limiting groove 421 is matched with the outer edge wall of the cylindrical structure of the push handle rotating seat 22, the rotation is flexible, the rotating convex part 21 is not prone to shaking or shifting, and the structure is more stable and reliable.

In this embodiment, the wheel alignment assembly 60 includes a alignment pin 61 and a locking spring 63; the positioning bolt 61 is arranged at the bottom of the front leg rod 11 and the rear leg rod 12 and is connected with the switching cable assembly 53; the wheel frame 31 is provided with a positioning hole 62; the locking spring 63 can make the positioning pin 61 snap into the positioning hole 62 to lock the wheel frame 31. The switching cable assembly 53 can make the positioning bolt 61 disengage from the positioning hole 62 of the wheel frame 31 by pulling through the positioning bolt 61, so that the wheel frame 31 can rotate relative to the leg rod to be used as a steering wheel; when the positioning pin 61 is engaged in the positioning hole 62 under the action of the locking spring 63, the wheel frame 31 is locked, and the wheel frame 31 is not rotatable, which can be used as a driving wheel.

The front leg shaft 11 and the rear leg shaft 12 are each provided with a brake assembly 70 for locking the roller 32 of the wheel mechanism 30. The brake assembly 70 may be arranged by those skilled in the art according to the prior art and will not be described herein. It is to be understood that the present invention is not limited to the above-described embodiments, and that equivalent modifications and substitutions may be made by those skilled in the art without departing from the spirit of the present invention, and that such equivalent modifications and substitutions are to be included within the scope of the appended claims.

Claims (7)

1. A stroller having a front-rear wheel set switching structure, comprising: the device comprises a frame (10), a push handle frame (20), a wheel mechanism (30), a central connecting unit (40), a wheel set switching component (50) and a wheel orientation component (60);

the frame (10) comprises a front leg rod (11) and a rear leg rod (12); the front leg rod (11) and the rear leg rod (12) are both connected to the central connection unit (40); the wheel mechanism (30) comprises a wheel carrier (31) and a roller (32), the roller (32) is mounted on the wheel carrier (31) in a rolling manner, and the wheel carrier (31) is rotatably mounted at the bottom of the front leg rod (11) or the rear leg rod (12); the wheel orientation component (60) is arranged at the bottom of the front leg rod (11) and the rear leg rod (12) and can lock the wheel frame (31);

the push handle frame (20) is rotatably arranged on the central connecting unit (40); during the process that the push handle frame (20) rotates relative to the central connecting unit (40), the wheel orientation component (60) at the bottom of the front leg rod (11) or the rear leg rod (12) can be operated through the wheel set switching component (50).

2. The stroller of claim 1, wherein: the wheel set switching assembly (50) comprises a switching swinging piece (51), two switching telescopic push blocks (52) and a switching inhaul cable assembly (53); the central connecting unit (40) is provided with a central working cavity; the switching swing piece (51) is rotatably arranged in the central working cavity; the two opposite sides of the switching swinging piece (51) are respectively connected with a switching inhaul cable assembly (53), and the switching inhaul cable assemblies (53) on the two sides are respectively connected with the wheel orientation assemblies (60) at the bottoms of the front leg rod (11) and the rear leg rod (12);

two switching telescopic push blocks (52) are arranged on two opposite sides of the switching swinging piece (51); the push handle frame (20) is provided with a rotating convex part (21); in the process that the push handle frame (20) rotates relative to the central connecting unit (40), the rotating convex part (21) can push one of the switching telescopic pushing blocks (52), the switching telescopic pushing block (52) can abut against and push the switching swinging piece (51) to move, and the wheel orientation component (60) works through the switching cable component (53).

3. The stroller of claim 2, wherein: the central connecting unit (40) comprises a central connecting seat (41) and a central connecting cover (42); the central working cavity is formed by surrounding the central connecting seat (41) and the central connecting cover (42); the center connecting cover (42) and the center connecting seat (41) are provided with a rotating center (43);

a push handle rotating seat (22) is arranged at one end of the push handle frame (20) close to the central connecting unit (40); the push handle rotating seat (22) is arranged outside the central connecting cover (42) and can rotate around the rotating center (43); the rotating convex part (21) is arranged on one side, close to the central connecting cover (42), of the push handle rotating seat (22);

the switching telescopic push block (52) is slidably mounted on the central connecting seat (41), and one end of the switching telescopic push block (52) can extend out of the central connecting cover (42) and approach the push handle rotating seat (22); in the process that the push handle rotating seat (22) rotates relative to the central connecting unit (40), the rotating convex part (21) can enable the switching telescopic pushing block (52) to be pressed into the central working cavity, and the switching telescopic pushing block (52) can be abutted and push the switching swinging piece (51) to move.

4. The stroller of claim 3, wherein: the switching telescopic push block (52) is arranged in a prismatic structure and comprises an upper abutting inclined plane (521) and a lower abutting inclined plane (522); the upper abutting inclined surface (521) can abut against the rotating convex part (21); the lower abutment slope (522) may abut against the switching swing piece (51).

5. The stroller of claim 3, wherein: a push handle unlocking pressing block (23) is arranged at the top of the push handle frame (20); the push handle rotating seat (22) is provided with a push handle unlocking block (24) and a push handle locking block (25); inclined abutting surfaces matched with each other are arranged between the push handle locking block (25) and the push handle unlocking block (24); an unlocking inhaul cable assembly is arranged between the push handle unlocking block (24) and the push handle unlocking pressing block (23); the push handle locking block (25) can lock the push handle rotating seat (22);

the push handle unlocking pressing block (23) is pressed, the push handle unlocking block (24) can be moved through the unlocking inhaul cable assembly, the push handle unlocking block (24) can be abutted, and the push handle locking block (25) can be moved towards the direction far away from the push handle rotating seat (22), so that the locking of the push handle locking block (25) and the push handle rotating seat (22) is released.

6. The stroller of claim 3, wherein: the outer edge wall of the push handle rotating seat (22) is arranged in a cylindrical structure, and the rotating convex part (21) is positioned at the outer edge of the push handle rotating seat (22); the central connecting cover (42) is provided with an annular limiting groove (421), and the rotating convex part (21) can rotate in the annular limiting groove (421).

7. The stroller of claim 2, wherein: the wheel orientation assembly (60) comprises a positioning bolt (61) and a locking spring (63); the positioning bolt (61) is arranged at the bottoms of the front leg rod (11) and the rear leg rod (12) and is connected with the switching cable assembly (53); the wheel carrier (31) is provided with a positioning hole (62); the locking spring (63) can enable the positioning bolt (61) to be clamped into the positioning hole (62) so as to lock the wheel frame (31).

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