CN112572586A

CN112572586A - Folding frame and baby stroller

Info

Publication number: CN112572586A
Application number: CN202011583637.XA
Authority: CN
Inventors: 赖春华; 丁峰
Original assignee: Luorui Sports Products Kunshan Co ltd
Current assignee: Luorui Sports Products Kunshan Co ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-03-30

Abstract

The invention belongs to the technical field of carts, and discloses a folding frame which comprises a frame body, a push rod, a first sliding sleeve sleeved on the push rod, a grab bar with the end part hinged to the first sliding sleeve and a connecting rod assembly. In another aspect of the invention, a baby stroller is disclosed, which comprises the above folding frame. The grab rail can be locked without a locking mechanism, and the condition that the grab rail is unlocked due to mistaken touch of an unlocking button is avoided.

Description

Folding frame and baby stroller

Technical Field

The invention relates to the technical field of a stroller, in particular to a folding frame and a stroller.

Background

A stroller is widely used as a baby walker. Because the baby stroller is small in size, the frame of the baby stroller is usually made into a foldable frame, so that the baby stroller is convenient to fold, small in size after being folded, easy to store and convenient to carry.

In the prior art, the foldable frame of the stroller generally includes a push rod and a grab bar, and a locking mechanism is disposed at a connection position of the grab bar and the push rod, so that when the foldable frame is in the unfolded state, the locking mechanism can lock the grab bar, thereby keeping the grab bar of the foldable frame in the unfolded state in a fixed state.

In order to facilitate the locking and unlocking of the grab bar, the unlocking button of the locking mechanism is usually disposed on the grab bar, and since the child has great curiosity, the grab bar which is kept in the locked state may be unlocked by touching the unlocking button by mistake, thereby causing the child to fall off the stroller.

Therefore, there is a need for a foldable frame that does not require a locking mechanism so that the grab bar can be securely fixed when the foldable frame is in the unfolded state.

Disclosure of Invention

The invention aims to provide a folding frame and a baby stroller, wherein the folding frame can be stably fixed in an unfolded state without a locking mechanism, so that the problem that a baby child falls off the stroller because a grab bar which keeps a locked state is unlocked due to mistaken touch of an unlocking button of the traditional baby stroller is solved.

To achieve the object, the present invention provides a foldable vehicle frame having a folded state and an unfolded state, the foldable vehicle frame including a frame body, a push rod, a first sliding sleeve sleeved on the push rod, and a grab bar with an end hinged to the first sliding sleeve, the foldable vehicle frame further including a first connecting rod, a second connecting rod, and a third connecting rod, wherein:

one end of the push rod is hinged to the frame body so as to rotate around a first rotating shaft, two ends of the first connecting rod are respectively hinged to the frame body and a second rotating shaft located in the middle section of the push rod, and two ends of the second connecting rod are respectively hinged to the first sliding sleeve and the middle section of the first connecting rod so as to drive the first sliding sleeve to slide along the axial direction of the push rod when the push rod rotates around the first rotating shaft;

two ends of the third connecting rod are respectively hinged to the second rotating shaft and the middle section of the grab rail so as to drive the grab rail to swing when the first sliding sleeve slides;

the second rotating shaft is arranged between the first rotating shaft and the first sliding sleeve, and when the first sliding sleeve slides to a preset locking position towards the first rotating shaft, the grab rail is locked on the push rod.

Preferably, the foldable frame further comprises a front wheel bracket and a fourth connecting rod, the frame body comprises a first connecting body and a second connecting body, wherein:

one end of the front wheel bracket is hinged to the first connecting body so as to be capable of rotating along a third rotating shaft, and two ends of the fourth connecting rod are respectively hinged to the second connecting body and a fourth rotating shaft positioned in the middle section of the front wheel bracket;

the first rotating shaft is arranged on the first connecting body, the first connecting rod is hinged to the second connecting body, and when the push rod rotates around the first rotating shaft, the second connecting body can drive the front wheel support to rotate around the third rotating shaft.

Preferably, the foldable frame further comprises a pair of rear wheel bars and a pair of fifth links, wherein:

one ends of the pair of rear wheel rods are respectively hinged to two sides of the first connecting body so as to be capable of rotating along a pair of fifth rotating shafts respectively, and the fifth rotating shafts are intersected or are in a non-coplanar manner with the first rotating shafts so as to enable the pair of rear wheel rods to be close to or far away from each other;

one end of each of the pair of fifth connecting rods is hinged to the second connecting body, and the other end of each of the pair of fifth connecting rods is hinged to the middle section of each of the pair of rear wheel rods, so that when the push rod rotates around the first rotating shaft, the second connecting body can drive the pair of rear wheel rods to approach or depart from each other.

Preferably, the foldable frame further comprises a pair of second sliding sleeves, the pair of second sliding sleeves are respectively sleeved on the pair of rear wheel rods, one ends of the pair of fifth connecting rods are respectively hinged to the second connecting bodies, and the other ends of the pair of fifth connecting rods are respectively hinged to the pair of second sliding sleeves, so that when the push rod rotates around the first rotating shaft, the pair of second sliding sleeves drive the pair of rear wheel rods to approach to or separate from each other.

Preferably, the push rod comprises a front push rod and a rear push rod, one end of the front push rod is hinged to the first rotating shaft, and one end of the rear push rod is hinged to a sixth rotating shaft located at the other end of the front push rod;

when folding frame by the state of expanding switches to when fold condition, preceding push rod can wind first pivot is along being close to the direction of second connector rotates, back push rod can wind sixth pivot is along being close to the direction of bar rotates to fold up the bar, and make the bar is roughly parallel to preceding push rod.

Preferably, the push rod further comprises a limiting part, and when the front push rod rotates around the sixth rotating shaft along the direction far away from the grab rail, the limiting part can limit the front push rod, so that the front push rod and the rear push rod are located on the same straight line.

Preferably, the push rod further comprises a locking mechanism capable of locking the front push rod and the rear push rod which are located on the same straight line.

Preferably, the foldable frame further comprises a seat plate, a sixth connecting rod and a seventh connecting rod, two ends of the sixth connecting rod are respectively hinged to one side of the bottom of the seat plate and the first connecting body, and two ends of the seventh connecting rod are respectively hinged to the other side of the bottom of the seat plate and the second connecting body, so that when the push rod rotates around the first rotating shaft, the second connecting body can fold or unfold the seat plate.

Preferably, one end of the seventh connecting rod is hinged to the other side of the bottom of the seat plate, and the other end of the seventh connecting rod is hinged to the fourth rotating shaft located on the middle section of the front wheel bracket.

Another aspect of the invention provides a stroller comprising a folding frame as described above.

The invention has the beneficial effects that: through first sliding sleeve, first connecting rod, second connecting rod and third connecting rod for first sliding sleeve orientation when first pivot slides to predetermineeing the latched position, first connecting rod and third connecting rod are located same straight line to lock the bar firmly, thereby avoid appearing because of the mistake touches the condition that the unblock button leads to the bar unblock.

Drawings

FIG. 1 is a schematic illustration of a stroller in an expanded configuration according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at R;

FIG. 3 is a front view of FIG. 1;

FIG. 4 is a schematic illustration of the stroller in a semi-collapsed configuration in accordance with an embodiment of the present invention;

FIG. 5 is a schematic structural view of the stroller in a collapsed position in accordance with an embodiment of the present invention;

fig. 6 is a front view of fig. 5.

In the figure:

11. a first connecting body; 12. a second connector;

21. a front push rod; 22. a rear push rod; 23. a locking mechanism;

3. a grab rail;

4. a front wheel bracket;

51. a rear wheel lever;

6. a seat plate;

71. a first link; 72. a second link; 73. a third link; 74. a fourth link; 75. a fifth link; 76. a sixth link; 77. a seventh connecting rod;

81. a first sliding sleeve; 82. a second sliding sleeve;

91. a first rotating shaft; 92. a second rotating shaft; 93. a third rotating shaft; 94. a fourth rotating shaft; 95. a fifth rotating shaft; 96. and a sixth rotating shaft.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; 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 in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via 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.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element 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 only for descriptive purposes and are not intended to have a special meaning.

This embodiment provides a baby's shallow, and this baby's shallow includes folding frame, and folding frame has fold condition and expansion state to make this baby's shallow folding back small, easily deposit and conveniently carry.

Since the stroller is usually locked to the unfolded state by the locking device and unlocked by the unlocking button, so that the stroller can be folded to the folded state, but since the child seated in the stroller is not aware of the function of the unlocking button and has a strong curiosity, the child may accidentally touch the unlocking button while sitting on the stroller, the stroller kept in the locked state is unlocked, and the child seated in the stroller may fall off the stroller, and therefore, the present embodiment provides a foldable frame, which will be described in detail below.

Referring to fig. 1 to 6, the foldable frame has a folded state and an unfolded state, and includes a frame body, a push rod, a first sliding sleeve 81, a grab bar 3 and a connecting rod assembly, wherein the connecting rod assembly includes a first connecting rod 71, a second connecting rod 72 and a third connecting rod 73. One end of the push rod is hinged to the frame body to form a first hinged shaft, so that the push rod can rotate around a first rotating shaft 91 coinciding with the first hinged shaft, a pushing portion is arranged at the other end of the push rod, and a user pushes the baby stroller through the pushing portion pushing the push rod. The first sliding sleeve 81 is sleeved on the push rod and can slide along the extending direction of the push rod. One end of the grab bar 3 is hinged to the first sliding sleeve 81, and the other end of the grab bar 3 is provided with a hand-held part which can be grasped by a child sitting in the baby stroller.

One end of the first link 71 is hinged to the frame body, and the other end of the first link 71 is hinged to the middle section of the push rod to form a second rotating shaft 92. One end of the second connecting rod 72 is hinged to the first sliding sleeve 81, the other end of the second connecting rod 72 is hinged to the middle section of the first connecting rod 71, and when the push rod rotates around the first rotating shaft 91, the first connecting rod 71 and the second connecting rod 72 drive the first sliding sleeve 81 to slide along the extending direction of the push rod. One end of the third link 73 is hinged to the second rotating shaft 92, and the other end of the third link 73 is hinged to the middle section of the grab bar 3, and when the first sliding sleeve 81 slides along the extending direction of the push rod, the third link 73 drives the grab bar 3 to swing.

The second rotating shaft 92 is disposed between the first rotating shaft 91 and the first sliding sleeve 81, when the first sliding sleeve 81 slides toward the first rotating shaft 91 to a predetermined locking position, the first link 71 and the third link 73 are located on the same straight line, and the first link 71, the second link 72, the third link 73 and the grab bar 3 form a triangle around them, so as to lock the first sliding sleeve 81.

Through the first sliding sleeve 81, the first connecting rod 71, the second connecting rod 72 and the third connecting rod 73, when the first sliding sleeve 81 slides to a preset locking position towards the first rotating shaft 91, the grab rail 3 can be locked on the push rod and can be stably locked, and the situation that the grab rail 3 is unlocked due to mistaken touch of an unlocking key is avoided.

It is understood that, in the present embodiment, in order to reduce the number of the link assemblies and to make the structure of the link assemblies more stable, the link assemblies are composed of the first link 71, the second link 72 and the third link 73, and when the first sliding sleeve 81 slides to the locking position, the first link 71 and the third link 73 are located on the same straight line, and the first link 71, the second link 72, the third link 73 and the grab bar 3 form a triangle around the periphery to lock the first sliding sleeve 81, and in other embodiments, the link assemblies may also be other link structures capable of locking the grab bar 3 to the push rod when the first sliding sleeve 81 slides to the locking position, which is not limited herein.

Further, in order to make the folding frame have a smaller volume when being folded and facilitate the storage of the folding frame, the folding frame further comprises a front wheel bracket 4 and a fourth connecting rod 74, and the frame body comprises a first connecting body 11 and a second connecting body 12. One end of the front wheel bracket 4 is hinged to the first connecting body 11 to be able to rotate along the third rotating shaft 93, one end of the fourth connecting rod 74 is hinged to the second connecting body 12, and the other end of the fourth connecting rod 74 is hinged to the fourth rotating shaft 94 located at the middle section of the front wheel bracket 4.

The first rotating shaft 91 is disposed on the first connecting body 11, and the first connecting rod 71 is hinged to the second connecting body 12. When the push rod rotates around the first rotating shaft 91, the first connecting rod 71 swings and drives the second connecting body 12 to swing, the second connecting body 12 swings to drive the fourth connecting rod 74 to swing, the fourth connecting rod 74 swings to drive the front wheel support 4 to rotate around the third rotating shaft 93, so that when the folding frame is stored, the front wheel support 4 can be close to the push rod, the size of the baby stroller is reduced, the front wheel support 4 can be stored only by rotating the push rod, and the storage of the folding frame is facilitated.

Further, in order to make the folding frame smaller in volume when being folded, the folding frame further includes a pair of rear wheel levers 51 and a pair of fifth links 75, one ends of the pair of rear wheel levers 51 are respectively hinged to both sides of the first connecting body 11 to be capable of respectively rotating along a pair of fifth rotating shafts 95, and the fifth rotating shafts 95 intersect or are out of plane with the first rotating shafts 91 to enable the pair of rear wheel levers 51 to be capable of approaching to or departing from each other, so that when being stored, the rear wheels on the pair of rear wheel levers 51 can be rotated between the pair of front wheels. One ends of the pair of fifth links 75 are respectively hinged to the second connecting body 12, and the other ends of the pair of fifth links 75 are respectively hinged to the middle sections of the pair of rear wheel levers 51. When the push rod rotates around first pivot 91, wobbling second connector 12 can drive a pair of swing of fifth connecting rod 75 to drive a pair of rear wheel pole 51 and be close to each other or deviate from, make only need rotate the push rod and just can accomodate a pair of rear wheel pole 51, not only reduced the volume when folding frame is in fold condition, and made things convenient for accomodating of folding frame.

Preferably, in order to improve the supporting strength of the rear wheel rods 51, the foldable frame further includes a pair of second sliding sleeves 82, the pair of second sliding sleeves 82 are respectively sleeved on the pair of rear wheel rods 51 to be capable of respectively sliding along the extending direction of the pair of rear wheel rods 51, one ends of the pair of fifth connecting rods 75 are respectively hinged on the second connecting body 12, and the other ends of the pair of fifth connecting rods 75 are respectively hinged on the pair of second sliding sleeves 82, so that when the push rod rotates around the first rotating shaft 91, the pair of second sliding sleeves 82 drive the pair of rear wheel rods 51 to approach or separate from each other, thereby improving the supporting strength of the rear wheel rods 51.

Since the push rod needs to be rotated from the top end of the stroller to the bottom end of the stroller about the first rotation shaft 91 when the foldable frame is stored, the rotation path thereof is long and the operation is troublesome. In order to solve the above problem, it is preferable that the push rod includes a front push rod 21 and a rear push rod 22, one end of the front push rod 21 is hinged to the first rotating shaft 91, and one end of the rear push rod 22 is hinged to a sixth rotating shaft 96 located at the other end of the front push rod 21.

When the folding frame is switched from the unfolding state to the folding state, the rear push rod 22 rotates around the sixth rotating shaft 96 along the direction close to the grab rail 3, then the front push rod 21 rotates around the first rotating shaft 91 along the direction close to the second connecting body 12, so that the grab rail 3 is folded, the radius of the push rod rotating around the first rotating shaft 91 is reduced, the folded grab rail 3 is approximately parallel to the front push rod 21, the folding frame is convenient to store and is simple to operate, and the volume of the stored folding frame is smaller.

Further, in order to facilitate the folding frame to be stored in the folded state from the unfolded state, the push rod further includes a limiting portion, when the front push rod 21 rotates around the sixth rotating shaft 96 along the direction away from the grab rail 3, the limiting portion can limit the front push rod 21, and when the front push rod 21 rotates to be located on the same straight line with the rear push rod 22, the front push rod 21 abuts against the rear push rod 22, so that the front push rod 21 cannot continue to rotate. When the folding frame in the unfolded state is stored, the rear push rod 22 can be pressed down firstly to unlock the grab bar 3, and after the grab bar 3 is unlocked, the rear push rod 22 is rotated around the sixth rotating shaft 96 in the direction close to the grab bar 3, so that the folding frame is convenient to store.

Further, in order to keep the front push rod 21 and the rear push rod 22 locked during the pushing process of the push rods, the push rods further comprise a locking mechanism 23, and the locking mechanism 23 can lock the front push rod 21 and the rear push rod 22 which are positioned on the same straight line.

Further, in order to make the folding bicycle frame have a smaller volume after being stored, and place the seat board 6 to interfere with other parts of the folding bicycle frame, the folding bicycle frame further comprises a sixth connecting rod 76 and a seventh connecting rod 77, two ends of the sixth connecting rod 76 are respectively hinged to one side of the bottom of the seat board 6 and the first connecting body 11, two ends of the seventh connecting rod 77 are respectively hinged to the other side of the bottom of the seat board 6 and the second connecting body 12, so that when the push rod rotates around the first rotating shaft 91, the second connecting body 12 can adjust the inclination angle of the seat board 6, and thus the seat board 6 is prevented from interfering with other parts of the folding bicycle frame, and the seat board 6 is folded or unfolded.

Further, in order to keep the seat plate 6 in a fixed state when the foldable frame is in the unfolded state, one end of the seventh connecting rod 77 is hinged to the other side of the bottom of the seat plate 6, and the other end of the seventh connecting rod 77 is hinged to the fourth rotating shaft 94 located on the middle section of the front wheel bracket 4, so that the seat plate 6 is stably supported by the front wheel bracket 4 in the unfolded state, and the seat plate 6 can be kept in a fixed state when a child sits on the seat plate 6.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a folding chassis, has fold condition and expansion state, folding chassis includes frame body, push rod, cover and arranges in first sliding sleeve (81) and the tip of push rod articulate in handrail pole (3) of first sliding sleeve (81), its characterized in that, folding chassis still includes first connecting rod (71), second connecting rod (72) and third connecting rod (73), wherein:

one end of the push rod is hinged to the frame body so as to rotate around a first rotating shaft (91), two ends of the first connecting rod (71) are respectively hinged to the frame body and a second rotating shaft (92) located in the middle section of the push rod, two ends of the second connecting rod (72) are respectively hinged to the first sliding sleeve (81) and the middle section of the first connecting rod (71), and the first sliding sleeve (81) is driven to slide along the axial direction of the push rod when the push rod rotates around the first rotating shaft (91);

two ends of the third connecting rod (73) are respectively hinged to the second rotating shaft (92) and the middle section of the grab rail (3) so as to drive the grab rail (3) to swing when the first sliding sleeve (81) slides;

the second rotating shaft (92) is arranged between the first rotating shaft (91) and the first sliding sleeve (81), and when the first sliding sleeve (81) faces the first rotating shaft (91) and slides to a preset locking position, the grab rail (3) is locked on the push rod.

2. The folding frame of claim 1, characterized in that it further comprises a front wheel bracket (4) and a fourth connecting rod (74), said frame body comprising a first connecting body (11) and a second connecting body (12), wherein:

one end of the front wheel support (4) is hinged to the first connecting body (11) so as to be capable of rotating along a third rotating shaft (93), and two ends of the fourth connecting rod (74) are respectively hinged to the second connecting body (12) and a fourth rotating shaft (94) located in the middle section of the front wheel support (4);

the first rotating shaft (91) is arranged on the first connecting body (11), the first connecting rod (71) is hinged to the second connecting body (12), and when the push rod rotates around the first rotating shaft (91), the second connecting body (12) can drive the front wheel support (4) to rotate around the third rotating shaft (93).

3. The folding frame of claim 2, further comprising a pair of rear wheel bars (51) and a pair of fifth links (75), wherein:

one ends of the pair of rear wheel rods (51) are respectively hinged to two sides of the first connecting body (11) so as to be capable of rotating along a pair of fifth rotating shafts (95) respectively, and the fifth rotating shafts (95) are intersected or are not coplanar with the first rotating shafts (91), so that the pair of rear wheel rods (51) can be close to or far away from each other;

one end of each of the pair of fifth connecting rods (75) is hinged to the second connecting body (12), and the other end of each of the pair of fifth connecting rods (75) is hinged to the middle section of each of the pair of rear wheel rods (51), so that when the push rod rotates around the first rotating shaft (91), the second connecting body (12) can drive the pair of rear wheel rods (51) to approach or depart from each other.

4. The foldable frame according to claim 3, further comprising a pair of second sliding sleeves (82), wherein the pair of second sliding sleeves (82) are respectively sleeved on the pair of rear wheel rods (51), one ends of the pair of fifth connecting rods (75) are respectively hinged to the second connecting body (12), and the other ends of the pair of fifth connecting rods (75) are respectively hinged to the pair of second sliding sleeves (82), so that when the push rod rotates around the first rotating shaft (91), the pair of second sliding sleeves (82) drive the pair of rear wheel rods (51) to approach or move away from each other.

5. The folding frame of claim 2, wherein:

the push rod comprises a front push rod (21) and a rear push rod (22), one end of the front push rod (21) is hinged to the first rotating shaft (91), and one end of the rear push rod (22) is hinged to a sixth rotating shaft (96) located at the other end of the front push rod (21);

when the folding frame by the state of expanding switches to when fold condition, preceding push rod (21) can wind first pivot (91) are followed and are close to the direction rotation of second connector (12), back push rod (22) can wind sixth pivot (96) are followed and are close to the direction rotation of bar (3) to fold up bar (3), and make bar (3) be roughly parallel to preceding push rod (21).

6. The folding frame of claim 5, characterized in that the push rod further comprises a limiting portion capable of limiting the front push rod (21) when the front push rod (21) rotates around the sixth rotating shaft (96) in a direction away from the grab bar (3), so that the front push rod (21) and the rear push rod (22) are located on the same straight line.

7. The folding frame of claim 6, characterized in that said push rod further comprises a locking mechanism (23), said locking mechanism (23) being able to lock said front push rod (21) and said rear push rod (22) on the same line.

8. The folding chassis according to claim 2, characterized in that it further comprises a seat plate (6), a sixth connecting rod (76) and a seventh connecting rod (77), the ends of the sixth connecting rod (76) are hinged to one side of the bottom of the seat plate (6) and the first connecting body (11), respectively, and the ends of the seventh connecting rod (77) are hinged to the other side of the bottom of the seat plate (6) and the second connecting body (12), respectively, so that the second connecting body (12) can fold or unfold the seat plate (6) when the push rod rotates around the first rotating shaft (91).

9. A folding frame as claimed in claim 8, characterized in that one end of said seventh connecting rod (77) is hinged to the other side of the bottom of said seat plate (6), and the other end of said seventh connecting rod (77) is hinged to said fourth pivot (94) located on the middle section of said front wheel carrier (4).

10. A stroller, characterized in that it comprises a folding frame according to any of claims 1-9.