CN112441102B

CN112441102B - Stroller frames and strollers

Info

Publication number: CN112441102B
Application number: CN201910821616.8A
Authority: CN
Inventors: 刘修平
Original assignee: SUNNYLOVE BABY PRODUCTS ZHUHAI CO LTD
Current assignee: SUNNYLOVE BABY PRODUCTS ZHUHAI CO LTD
Priority date: 2019-09-02
Filing date: 2019-09-02
Publication date: 2025-05-27
Anticipated expiration: 2039-09-02
Also published as: CN112441102A

Abstract

The invention relates to a baby carriage frame and a baby carriage, wherein the baby carriage frame comprises a handle upper rod, a handle lower rod, a front foot rod, a rear foot rod, a supporting rod, a first locking mechanism and a connecting mechanism, the handle lower rod is connected with the handle upper rod, one end of the supporting rod is connected with the handle lower rod, the first locking mechanism is used for locking the handle lower rod and the supporting rod and partially unlocking after the handle upper rod and the handle lower rod are folded relatively, so that the first end of the supporting rod can slide relative to the handle lower rod along a direction away from the handle upper rod, and the connecting mechanism is used for connecting the front foot rod, the rear foot rod and the handle lower rod and driving the first locking mechanism to be completely unlocked after the handle lower rod rotates relative to the front foot rod and the rear foot rod, so that the supporting rod can slide relative to the handle lower rod along a direction close to the handle upper rod. The invention has simple folding operation and convenient folding.

Description

Baby carriage frame and baby carriage

Technical Field

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

Background

When an infant is out, the infant is usually put in a stroller to relieve the burden of the adult. When the baby carriage is not needed, the baby carriage can be folded, so that the volume is reduced, and the baby carriage is convenient to store.

At present, most strollers are foldable, but the folding modes are various. For the frame of a high-landscape stroller, the handle bar generally comprises an upper section and a lower section, which makes folding the frame more difficult. The frame is usually required to be provided with a plurality of locks, and when the frame is folded, the plurality of locks are also required to be unlocked respectively and then can be operated, so that the operation is not very convenient, the locking mechanism is also relatively complex, the failure rate is high, and the use experience is reduced.

It should be noted that the information disclosed in the background section of the present invention is only for increasing the understanding of the general background of the present invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Disclosure of Invention

The invention aims to provide a baby carriage frame and a baby carriage, which are used for improving the folding convenience.

To achieve the above object, the present invention provides a stroller frame comprising:

A handle upper rod;

A handle lower rod connected with the handle upper rod;

a forefoot lever;

a rear foot bar;

The first end of the supporting rod is connected with the lower handle rod, and the second end of the supporting rod is connected with the rear foot rod;

A first locking mechanism for locking the handle lower bar and the support bar and partially unlocking the handle upper bar and the handle lower bar after being folded relative to each other so that the first end of the support bar can slide relative to the handle lower bar in a direction away from the handle upper bar, and

The connecting mechanism is used for connecting the front foot rod, the rear foot rod and the handle lower rod, and driving the first locking mechanism to unlock completely after the handle lower rod rotates relative to the front foot rod and the rear foot rod, so that the supporting rod can slide relative to the handle lower rod along the direction close to the handle upper rod.

In some embodiments, the first locking mechanism comprises:

The sliding sleeve is sleeved on the lower handle rod and connected with the first end of the supporting rod, and a first lock hole is formed in one end of the sliding sleeve, which is far away from the upper handle rod;

a first locking piece inserted in the first locking hole for limiting the sliding sleeve from moving away from the upper handle rod from the position locked by the lower handle rod, and

The first flexible piece, its first end is connected with the upper handle pole, and its second end is connected with first locking piece for drive first locking piece break away from first lockhole when the upper handle pole is folding for the lower handle pole, in order to remove the restriction to the sliding sleeve along the direction motion of keeping away from the upper handle pole.

In some embodiments, the first locking mechanism further comprises a first elastic member for driving the first locking piece separated from the first locking hole to reinsert in the first locking hole.

In some embodiments, a second lock hole is provided at an end of the sliding sleeve near the upper rod of the handle, and the first locking mechanism further comprises:

A second locking piece inserted in the second locking hole for limiting the sliding sleeve from moving from the position locked by the lower handle rod to the direction close to the upper handle rod, and

And the first end of the second flexible piece is connected with the second locking piece, the second end of the second flexible piece is connected with the connecting mechanism and is used for driving the second locking piece to be separated from the second locking hole when the lower handle rod rotates relative to the front foot rod and the rear foot rod so as to release the limit of the sliding sleeve to move along the direction close to the upper handle rod.

In some embodiments, the first locking mechanism further comprises:

The fixed seat is arranged in the lower handle rod and is provided with a first lock cavity for accommodating the second lock block;

A slider slidably disposed relative to the fixed base, one end of the slider remote from the handle upper bar being connected to the second flexible member, the slider having a first aperture configured to drive the second locking piece to extend or retract into the first lock cavity when the slider moves relative to the fixed base, and

The first connecting rod is connected with the second locking piece and is inserted into the first hole.

In some embodiments, the fixing base is further provided with a second lock cavity for accommodating the first lock block, the first lock block moves relative to the fixing base under the action of the first flexible piece to extend or retract the second lock cavity, the sliding block is provided with a second hole, the first locking mechanism further comprises a second connecting rod, the second connecting rod is connected with the first lock block and is inserted into the second hole, and the shape of the second hole is configured to drive the first lock block to retract into the second lock cavity under the action of the first flexible piece and drive the first lock block to move along the extending direction of the second flexible piece when the sliding block moves relative to the fixing base.

In some embodiments, the first locking mechanism further comprises a second elastic member for driving the second locking piece separated from the second locking hole to reinsert in the second locking hole.

In some embodiments, the connection mechanism comprises:

A connecting seat mounted on the front foot bar and provided with a first mounting groove in which the handle lower bar is rotatably mounted, and

The bayonet lock is movably arranged on the lower handle rod and connected with the second flexible piece and is used for moving relative to the lower handle rod when the lower handle rod rotates relative to the connecting seat so as to drive the second flexible piece to move.

In some embodiments, the connection base is provided with a first inclined surface which contacts and drives the bayonet to move when the handle lower rod rotates relative to the connection base.

In some embodiments, the connection mechanism further comprises a first sleeve sleeved on the outer periphery of the handle lower rod, and the outer periphery of the first sleeve is provided with a first rib.

In some embodiments, a second mounting groove is further provided in the connecting seat, and the rear foot bar is rotatably mounted in the second mounting groove.

In some embodiments, the connection mechanism further comprises a second sleeve, the second sleeve being sleeved on the outer periphery of the rear foot bar, the outer periphery of the second sleeve being provided with second ribs.

In some embodiments, the stroller frame further comprises:

A second locking mechanism for locking the handle upper bar and the handle lower bar, and

And the unlocking mechanism is used for unlocking the second locking mechanism.

In some embodiments, the stroller frame further comprises a seat plate, a first link, and a second link, the front leg is inverted-T-shaped, the seat plate is connected to the handle lower bar, a first end of the first link is connected to the seat plate, a second end of the first link is connected to the second link, a middle portion of the first link is connected to the front leg, and the second link is connected to the rear leg.

In some embodiments, the stroller frame further comprises a first rear wheel rotatably mounted on the rear foot bar, a second rear wheel rotatably mounted on the rear foot bar, and a brake mechanism for securing the first rear wheel and the second rear wheel relative to the rear foot bar.

In some embodiments, the braking mechanism includes:

a first stop lever;

A second stop lever;

the first rotating seat is rotatably arranged on the rear foot rod and used for driving the first stop lever to move along the axial direction of the first rear wheel when rotating relative to the first rear wheel so as to stop the first rear wheel from rotating;

A brake pedal mounted on the first rotary seat;

a second rotating seat rotatably provided on the rear foot bar for driving the second bar to move in an axial direction of the second rear wheel to block the second rear wheel from rotating when rotating relative to the second rear wheel, and

And the first end of the third flexible piece is connected with the first rotating seat, and the second end of the third flexible piece is connected with the second rotating seat and is used for driving the second rotating seat to rotate after the brake pedal is stepped on and drives the first rotating seat to rotate.

In some embodiments, the first swivel is provided with a second ramp for contacting and driving the first bar in motion, and/or the second swivel is provided with a third ramp for contacting and driving the second bar in motion.

In some embodiments, the first rotary seat is provided with a first stop groove arranged at the tail end of the second inclined surface so as to enter the first stop groove after the first stop lever is driven to move to a position for blocking the rotation of the first rear wheel, and/or the second rotary seat is provided with a second stop groove arranged at the tail end of the third inclined surface so as to enter the second stop groove after the second stop lever is driven to move to a position for blocking the rotation of the second rear wheel.

In order to achieve the above object, the present invention further provides a stroller, including the stroller frame.

According to the technical scheme, when the folding handle is folded, after the locking between the upper handle rod and the lower handle rod is released, the first locking mechanism can be partially unlocked in the folding process of the upper handle rod relative to the lower handle rod, so that the upper handle rod and the lower handle rod can rotate downwards together, and in the rotating process, the first locking mechanism can be completely unlocked, so that the upper handle rod and the lower handle rod can be continuously folded forwards until complete folding is realized, the folding operation is simple, the folding operation is relatively convenient, and the first locking mechanism is set to be unlocked in two steps, thereby being beneficial to reducing the number of the locking mechanisms and simplifying the structure.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:

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

FIG. 2 is a side view of one embodiment of a stroller frame of the present invention.

FIG. 3 is an exploded view of a first locking mechanism of one embodiment of the stroller frame of the present invention.

FIG. 4 is a schematic view of an assembled first locking mechanism of an embodiment of a stroller frame according to the present invention.

Fig. 5 is a schematic view of a mating structure of a first locking mechanism and a second locking mechanism of a stroller frame according to an embodiment of the present invention.

FIG. 6 is a schematic view of a connection mechanism of a stroller frame according to an embodiment of the present invention.

FIG. 7 is an exploded view of the attachment mechanism of one embodiment of the stroller frame of the present invention.

FIG. 8 is a cross-sectional view of an assembled connection mechanism of one embodiment of a stroller frame of the present invention.

FIG. 9 is an exploded view of a brake mechanism in one embodiment of a stroller frame according to the present invention.

FIG. 10 is a schematic illustration of an assembled brake mechanism of an embodiment of a stroller frame according to the present invention.

FIG. 11 is a schematic view of a stroller frame according to an embodiment of the present invention in a first folded state.

Fig. 12 is a schematic view showing a stroller frame according to an embodiment of the present invention in a second folded state.

Fig. 13 is a schematic view of a stroller frame according to an embodiment of the present invention in a third folded state.

Fig. 14 is a schematic view showing a structure of a stroller frame according to an embodiment of the present invention in a fourth folded state.

FIG. 15 is a schematic view of a stroller frame according to an embodiment of the present invention in a fully collapsed condition.

In the figure:

10. Handle upper bar, 20, handle lower bar, 30, front foot bar, 31, foot rest, 40, rear foot bar, 50, support bar, 60, ceiling bar, 70, grab bar, 80, back rest bar, 90, seat adjusting mechanism, 100, first locking mechanism, 110, seat plate, 120, support piece, 130, back rest adjusting mechanism, 140, first connecting rod, 150, second connecting rod, 160, first rear wheel, 170, second rear wheel, 180, first front wheel, 190, second front wheel, 200, connecting mechanism, 210, support piece, 300, second locking mechanism, 301, turntable;

101. the sliding sleeve, 102, the first locking piece, 103, the first flexible piece, 104, the first elastic piece, 105, the second locking piece, 106, the second flexible piece, 107, the fixed seat, 108, the sliding block, 109, the first connecting rod, 111, the second connecting rod, 112, the second elastic piece, 113 and the third connecting rod;

1011. 1012, second keyhole, 1013, connecting hole;

1071. fourth hole 1072, fifth hole 1073, sixth hole;

1081. first hole 1082, second hole 1083, third hole;

201. Connecting seat, 202, bayonet lock, 203, first sleeve, 204, second sleeve, 205, first rivet, 206, second rivet, 207, connecting pin, 208, handle, 209 and third rivet;

400. The third flexible piece, 401, a first mounting seat, 402, a first supporting seat, 403, a first rotating seat, 404, a first stop lever, 405, a first stop piece, 406, a third elastic piece, 407, a fifth elastic piece, 408, a first stop plate, 409, a fourth rivet;

501. The second mounting seat, 502, a second supporting seat, 503, a second rotating seat, 504, a second stop lever, 505, a second stop piece, 506, a fourth elastic piece, 507, a sixth elastic piece, 508, a second stop plate, 509 and a fifth rivet.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be understood that the terms "center," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention.

In one embodiment of the stroller frame provided by the present invention, as shown in fig. 1 and 2, the stroller frame comprises an upper handle bar 10, a lower handle bar 20, a front foot bar 30, a rear foot bar 40, a support bar 50, a first locking mechanism 100 and a connecting mechanism 200, wherein the lower handle bar 20 is connected to the upper handle bar 10, a first end of the support bar 50 is connected to the lower handle bar 20, a second end of the support bar 50 is connected to the rear foot bar 40, the first locking mechanism 100 is used for locking the lower handle bar 20 and the support bar 50 and partially unlocking after the upper handle bar 10 and the lower handle bar 20 are folded relatively so that the first end of the support bar 50 can slide relative to the lower handle bar 20 in a direction away from the upper handle bar 10, and the connecting mechanism 200 is used for connecting the front foot bar 30, the rear foot bar 40 and the lower handle bar 20 and completely unlocking the first locking mechanism 100 after the lower handle bar 20 rotates relative to the front foot bar 30 and the rear foot bar 40 so that the support bar 50 can slide relative to the lower handle bar 20 in a direction approaching the upper handle bar 10.

When the handle is folded, after the locking between the handle upper rod 10 and the handle lower rod 20 is released, the first locking mechanism 100 can be partially unlocked, namely, one-way unlocking is performed in the process that the handle upper rod 10 is folded relative to the handle lower rod 20, so that the first end of the supporting rod 50 can move along the handle lower rod 20 in a direction away from the handle upper rod 10, the handle upper rod 10 and the handle lower rod 20 can rotate downwards together, and in the rotating process, the first locking mechanism 100 can be completely unlocked, namely, two-way unlocking is realized, the supporting rod 50 can move along the handle lower rod 20 in a direction close to the handle upper rod 10 and beyond an initial locking position, the handle upper rod 10 and the handle lower rod 20 can continue to be folded forwards until complete folding is realized, the folding operation is simple, the folding operation is relatively convenient, and the first locking mechanism is set to be in two steps, so that the number of locking mechanisms is reduced, and the structure is simplified.

As shown in fig. 3 to 5, the first locking mechanism 100 includes a sliding sleeve 101, a first locking block 102 and a first flexible member 103, the sliding sleeve 101 is sleeved on the handle lower rod 20, the sliding sleeve 101 is connected with a first end of the supporting rod 50, a first locking hole 1011 is formed at one end of the sliding sleeve 101, which is far away from the handle upper rod 10, the first locking block 102 is inserted into the first locking hole 1011, the first locking block 102 is used for limiting the sliding sleeve 101 to move from a position locked relative to the handle lower rod 20 to a direction far away from the handle upper rod 10, the first end of the first flexible member 103 is connected with the handle upper rod 10, a second end of the first flexible member 103 is connected with the first locking block 102, and the first flexible member 103 is used for driving the first locking block 102 to be separated from the first locking hole 1011 when the handle upper rod 10 is folded relative to the handle lower rod 20, so as to release the limitation of the movement of the sliding sleeve 101 in a direction far away from the handle upper rod 10.

Further, the first locking mechanism 100 further includes a first elastic member 104 for driving the first locking piece 102 separated from the first locking hole 1011 to reinsert into the first locking hole 1011.

The end of the sliding sleeve 101, which is close to the upper handle rod 10, is provided with a second lock hole 1012, the first locking mechanism 100 comprises a second lock block 105 and a second flexible piece 106, the second lock block 105 is inserted into the second lock hole 1012, the second lock block 105 is used for limiting the sliding sleeve 101 to move from a position locked by the lower handle rod 20 to a direction close to the upper handle rod 10, a first end of the second flexible piece 106 is connected with the second lock block 105, a second end of the second flexible piece 106 is connected with the connecting mechanism 200, and the second flexible piece 106 is used for driving the second lock block 105 to be separated from the second lock hole 1012 when the lower handle rod 20 rotates relative to the front foot rod 30 and the rear foot rod 40 so as to release the limitation of the sliding sleeve 101 to move along the direction close to the upper handle rod 10.

The first locking mechanism 100 further comprises a fixing seat 107, a sliding block 108 and a first connecting rod 109, the fixing seat 107 is arranged in the handle lower rod 20, the fixing seat 107 is provided with a first locking cavity for accommodating the second locking piece 105, the sliding block 108 is slidably arranged relative to the fixing seat 107, one end, far away from the handle upper rod 10, of the sliding block 108 is connected with the second flexible piece 106, the sliding block 108 is provided with a first hole 1081, the shape of the first hole 1081 is configured to drive the second locking piece 105 to extend or retract into the first locking cavity when the sliding block 108 moves relative to the fixing seat 107, the first connecting rod 109 is connected with the second locking piece 105, and the sliding block 108 is inserted into the first hole 1081.

The fixing seat 107 is further provided with a second lock cavity for accommodating the first lock block 102, the first lock block 102 moves relative to the fixing seat 107 under the action of the first flexible member 103 to extend or retract the second lock cavity, the sliding block 108 is provided with a second hole 1082, the first locking mechanism 100 further comprises a second connecting rod 111, the second connecting rod 111 is connected with the first lock block 102 and is inserted into the second hole 1082, and the shape of the second hole 1082 is configured to drive the first lock block 102 to retract into the second lock cavity under the action of the first flexible member 103 and drive the first lock block 102 to move along the extending direction of the second flexible member 106 when the sliding block 108 moves relative to the fixing seat 107.

The first locking mechanism 100 further includes a second resilient member 112 for driving the second lock piece 105 out of the second lock hole 1012 to reinsert into the second lock hole 1012.

As shown in fig. 6, the connection mechanism 200 includes a connection base 201 and a bayonet 202, the connection base 201 is mounted on the front foot bar 30, the connection base 201 is provided with a first mounting groove, the handle lower bar 20 is rotatably mounted in the first mounting groove, the bayonet 202 is movably disposed on the handle lower bar 20 and connected with the second flexible member 106, and the bayonet 202 is used for moving relative to the handle lower bar 20 when the handle lower bar 20 rotates relative to the connection base 201 to drive the second flexible member 106 to move.

The connecting seat 201 is provided with a first inclined surface which contacts the bayonet 202 and drives the bayonet 202 to move when the handle lower lever 20 rotates relative to the connecting seat 201.

The connection mechanism 200 further comprises a first sleeve 203, the first sleeve 203 is sleeved on the outer periphery of the lower handle rod 20, and a first rib is arranged on the outer periphery of the first sleeve 203.

The connecting seat 201 is further provided therein with a second mounting groove in which the rear foot lever 40 is rotatably mounted.

The connection mechanism 200 further includes a second sleeve 204, where the second sleeve 204 is sleeved on the outer periphery of the rear foot bar 40, and the outer periphery of the second sleeve 204 is provided with second ribs.

By providing the first sleeve 203 and the second sleeve 204, rotation of the handle bar 20 and the rear foot bar 40 relative to the connecting seat 201 can be achieved also when they are non-circular.

The stroller frame further comprises a second locking mechanism 300 for locking the handle upper bar 10 and the handle lower bar 20, and an unlocking mechanism for unlocking the second locking mechanism 300.

The specific structure of the unlocking mechanism can be selected in various ways. For example, in the embodiment shown in fig. 1, the unlocking mechanism is provided outside the second locking mechanism 300, and unlocking of the second locking mechanism 300 can be achieved by laterally pressing the unlocking mechanism. In other embodiments, the unlocking mechanism may be disposed in the middle of the transverse rod of the upper handle rod 10, and the unlocking mechanism disposed at this position may be simultaneously connected with the second locking mechanisms 300 at both sides of the frame, thereby achieving one-hand unlocking.

The stroller frame further includes a seat plate 110, a first link 140 and a second link 150, the front leg bar 30 is in an inverted T shape, the seat plate 110 is connected with the handle lower bar 20, a first end of the first link 140 is connected with the seat plate 110, a second end of the first link 140 is connected with the second link 150, a middle portion of the first link 140 is connected with the front leg bar 30, and the second link 150 is connected with the rear leg bar 40.

The stroller frame further comprises a first rear wheel 160, a second rear wheel 170, the first rear wheel 160 and the second rear wheel 170 rotatably mounted on the rear foot bar 40, and a brake mechanism for securing the first rear wheel 160 and the second rear wheel 170 relative to the rear foot bar 40.

As shown in fig. 9 and 10, the brake mechanism includes a first bar 404, a second bar 504, a first rotating seat 403, a brake pedal, a second rotating seat 503, and a third flexible member 400, the first rotating seat 403 is rotatably disposed on the rear foot lever 40, the first rotating seat 403 is used for driving the first bar 404 to move along the axial direction of the first rear wheel 160 to block the rotation of the first rear wheel 160 when rotating relative to the first rear wheel 160, the brake pedal is mounted on the first rotating seat 403, the second rotating seat 503 is rotatably disposed on the rear foot lever 40, the second rotating seat 503 is used for driving the second bar 504 to move along the axial direction of the second rear wheel 170 to block the rotation of the second rear wheel 170 when rotating relative to the second rear wheel 170, the first end of the third flexible member 400 is connected with the first rotating seat 403, and the second end of the third flexible member 400 is connected with the second rotating seat 503, and the third flexible member 400 is used for driving the second rotating seat 503 to rotate after the brake pedal is stepped on and driving the first rotating seat 403 to rotate.

The first swivel seat 403 is provided with a second inclined surface for contacting the first bar 404 and driving the first bar 404 to move, and/or the second swivel seat 503 is provided with a third inclined surface for contacting the second bar 504 and driving the second bar 504 to move.

The first rotating seat 403 is provided with a first stop groove, which is disposed at the end of the second inclined surface to enter the first stop groove after the first bar 404 is driven to move to a position blocking the rotation of the first rear wheel 160, and/or the second rotating seat 503 is provided with a second stop groove, which is disposed at the end of the third inclined surface to enter the second stop groove after the second bar 504 is driven to move to a position blocking the rotation of the second rear wheel 170.

In the above-described respective embodiments, the first flexible member 103, the second flexible member 106, and the third flexible member 400 may be bent, but are not substantially extendable, a wire rope or the like may be employed.

In each of the above embodiments, the rod members may be solid rods or hollow rods (i.e., tubes), such as the handle upper rod 10, the handle lower rod 20, the front foot rod 30, the rear foot rod 40, the support rod 50, the ceiling rod 60, the grab rod 70, the backrest rod 80, the first link 140, the second link 150, etc., to reduce the overall weight of the vehicle frame.

The structure and operation of one embodiment of the stroller frame of the present invention will be described with reference to fig. 1-15:

as shown in fig. 1, the stroller frame includes a handle upper bar 10, a handle lower bar 20, a front foot bar 30, a rear foot bar 40, a support bar 50, a ceiling bar 60, a grab bar 70, a backrest bar 80, and a seat plate 110.

The upper handle bar 10 is connected with the lower handle bar 20, a second locking mechanism 300 is arranged between the upper handle bar 10 and the lower handle bar 20, and an unlocking mechanism is also arranged on the frame and used for unlocking the second locking mechanism 300.

The ceiling lever 60 is pivotally connected to an end of the handle upper lever 10 adjacent to the handle lower lever 20. The bottom of the backrest bar 80 is pivotally connected to the backrest adjustment mechanism 130, and the backrest adjustment mechanism 130 is fixed to the handle lower bar 20.

The top of the support piece 120 is pivotally connected to the grab bar 70, and the bottom of the support piece 120 is pivotally connected to the seat plate 110. The seat plate 110 is pivotally connected to the back adjustment mechanism 130, the seat adjustment mechanism 90 is pivotally connected to the seat plate 110, and the bottom of the grab rail 70 is pivotally connected to the handle lower bar 20.

The front foot bar 30, the rear foot bar 40 and the handle lower bar 20 are connected by a connecting mechanism 200. The front foot bar 30 has an inverted T-shape, and a lateral portion of the front foot bar 30 is a foot rest 31, on which foot rest 31 both feet can be placed when a baby sits. The first front wheel 180 and the second front wheel 190 are respectively mounted at both ends of the foot board 31. The rear foot bar 40 has an inverted U shape, and a first rear wheel 160 and a second rear wheel 170 are respectively mounted at both ends of the rear foot bar 40.

The frame further includes a support 210 provided on the handlebar stem 10 for supporting the rear side of the roof.

As shown in fig. 2, the first link 140 is in a bent shape, the top of the first link 140 is pivoted on the seat board 110, the middle of the first link 140 is pivoted with the front foot bar 30, the bottom of the first link 140 is pivoted with the top of the second link 150, the second link 150 is a straight bar, and the bottom of the second link 150 is pivoted with the rear foot bar 40. The top of the support bar 50 is pivotally connected to the handle lower bar 20, and the bottom of the support bar 50 is pivotally connected to the rear foot bar 40.

As shown in fig. 3, the first locking mechanism includes a sliding sleeve 101, a first locking piece 102, a first flexible piece 103, a first elastic piece 104, a second locking piece 105, a second flexible piece 106, a fixed seat 107, a sliding block 108, a first connecting rod 109, a second connecting rod 111, a second elastic piece 112, and a third connecting rod 113.

The sliding sleeve 101 is mounted on the outer periphery of the handle lower rod 20, and a first locking hole 1011, a second locking hole 1012 and a connecting hole 1013 are formed on the sliding sleeve 101. The first locking hole 1011 is provided at an end of the sliding sleeve 101 away from the handle bar 10, and the second locking hole 1012 is provided at an end of the sliding sleeve 101 near the handle bar 10. The first lock hole 1011 and the second lock hole 1012 are holes with one opening side in the circumferential direction, the opening of the first lock hole 1011 faces the direction away from the handle upper bar 10, and the opening of the second lock hole 1012 faces the direction close to the handle upper bar 10. The connection hole 1013 is used to connect the sliding bush 101 and the supporting bar 50.

Fixing base 107 fixed mounting is equipped with the recess in the inside of handle lower beam 20 respectively at the top surface and the bottom surface of fixing base 107, and slider 108 is the U-shaped, and vertical portion includes first gleitbretter and second gleitbretter, and slider 108 inserts when fixing base 107, and first gleitbretter and second gleitbretter card respectively in the recess of fixing base 107 top surface and bottom surface, and the three side of recess (i.e. front side, rear side and right side) all are equipped with the blocking portion, have spacing effect to first gleitbretter and second gleitbretter.

The fixing seat 107 is provided with a first lock cavity and a second lock cavity, the top surface and the bottom surface of the fixing seat 107 are respectively provided with a fourth hole 1071, a fifth hole 1072 and a sixth hole 1073, the fourth hole 1071 of the top surface is just opposite to the fourth hole 1071 of the bottom surface and is communicated with the first lock cavity, and the fifth hole 1072 of the top surface is just opposite to the fifth hole 1072 of the bottom surface and is communicated with the second lock cavity.

The second lock cavity is internally provided with a first elastic piece 104, the first elastic piece 104 is connected with the first lock block 102, the first lock cavity is internally provided with a second elastic piece 112, and the second elastic piece 112 is connected with the second lock block 105.

The first sliding piece and the second sliding piece of the sliding block 108 are respectively provided with a first hole 1081, a second hole 1082 and a third hole 1083, the first hole 1081 is in a strip hole shape which is obliquely arranged relative to the extending direction of the second flexible piece 106, the second hole 1082 is in a right triangle shape, and two right angle sides are respectively parallel and perpendicular to the extending direction of the second flexible piece 106. The third hole 1083 is also in the shape of an elongated hole, and its length direction is parallel to the extending direction of the second flexible member 106.

As shown in fig. 4, the first connection rod 109 passes through the first hole 1081 on the first slide of the slider 108, the fourth hole 1071 on the fixed seat 107, the first lock cavity on the fixed seat 107, and the first hole 1081 on the second slide of the slider 108, and the second connection rod 111 passes through the second hole 1082 on the first slide of the slider 108, the fifth hole 1072 on the fixed seat 107, the second lock cavity on the fixed seat 107, and the second hole 1082 on the second slide of the slider 108. The third connecting rod 113 passes through the third hole 1083 on the first slide of the slider 108, the sixth hole 1073 on the fixing seat 107, and the third hole 1083 on the second slide of the slider 108.

As shown in fig. 5, the second locking mechanism 300 includes a rotating disc connected to the upper handle lever 10, and when the upper handle lever 10 rotates relative to the lower handle lever 20, the rotating disc rotates together, and the first flexible member 103 is fixedly connected to the rotating disc, so that when the rotating disc rotates, the first flexible member 103 is driven to move towards a direction approaching to the upper handle lever 10, and thus the first locking piece 102 is driven to retract, so as to unlock the first locking piece 102. After the first locking piece 102 is unlocked, even if the second locking piece 105 still extends to be in a locked state, the sliding sleeve 101 is not influenced to move relative to the lower handle rod 20 in a direction away from the upper handle rod 10.

As shown in fig. 6, the connection mechanism 200 connects the handle lower bar 20, the front foot bar 30, and the rear foot bar 40.

As shown in fig. 7, the connection mechanism 200 includes a connection base 201, a bayonet 202, a first sleeve 203, and a second sleeve 204. The connecting seat 201, the first sleeve 203 and the second sleeve 204 are all of a split type structure.

The connecting seat 201 comprises an upper seat body and a lower seat body, wherein the upper seat body is fixedly arranged on the front foot rod 30, and is buckled above the lower seat body. The upper and lower housings are fastened and then connected and fixed by a connecting pin 207.

The connecting seat 201 is internally provided with a first mounting groove and a second mounting groove, and the first mounting groove and the second mounting groove are both cylindrical. The first sleeve 203 includes an upper pipe body and a lower pipe body, the upper pipe body is installed in the upper seat body, the lower pipe body is installed in the lower seat body, the upper pipe body is buckled above the lower pipe body, the upper pipe body and the lower pipe body are sleeved on the periphery of the handle lower rod 20, and are fixedly connected with the handle lower rod 20 through the first rivet 205. The second sleeve 204 includes a front pipe body and a rear pipe body, which are fastened in front of the rear pipe body, are sleeved on the outer circumference of the rear leg 40, and are fixedly connected with the rear leg 40 through the second rivet 206, and are disposed in the second mounting groove of the connection base 201.

The diameter of the middle section of the first sleeve 203 is smaller than that of the two ends, two first limiting holes are formed in the smaller part of the middle section, two second limiting holes corresponding to the first limiting holes are formed in the position, wrapped by the first sleeve 203, of the lower handle rod 20, and the two clamping pins 202 are respectively arranged in the first sleeve 203 and the lower handle rod 20 in a penetrating mode through the corresponding first limiting holes and the second limiting holes. The first and second limiting holes are elongated holes, and the length direction thereof is parallel to the lateral direction (left-right direction) of the handle lower rod 20 and the extending direction of the second flexible member 106. The end of the second flexible member 106 is provided with a collar into which the bayonet 202 is inserted.

The inner wall of the first mounting groove of the connecting seat 201 is provided with a first inclined plane, the first inclined plane is a spiral bulge, an included angle is formed between a circle formed by the bulge and the radial section of the first mounting groove, when the handle lower rod 20 rotates relative to the connecting seat 201 with the first sleeve 203, the bayonet 202 rotates along with the first sleeve 203, and in the rotating process, under the action of the first inclined plane, the bayonet 202 moves transversely, so that the left flexible piece and the right flexible piece 106 are driven to move relatively, as shown in fig. 8, the second locking piece 105 is driven to retract, and the second locking piece 105 is unlocked. At the same time, the slide block 108 can also keep the first locking piece 102 in the unlocked state, so that the slide sleeve 101 can move up or down along the handle lower rod 20.

The top of connecting seat 201 is equipped with handle 208, and handle 208 passes through third rivet 209 to be installed on connecting seat 201, and the whole frame is lifted to this handle 208 accessible after the frame is received, conveniently removes the frame.

As shown in fig. 9, the brake mechanism includes a brake pedal, a first bar 404, a second bar 504, a first swivel base 403, a second swivel base 503, and a third flexure 400.

A connecting rod is arranged between two ends of the bottom of the rear foot rod 40, the brake mechanism comprises a first mounting seat 401 and a second mounting seat 501, the first mounting seat 401 is connected with one side bottom end of the rear foot rod 40 and is connected with the connecting rod, and the second mounting seat 501 is connected with the other side bottom end of the rear foot rod 40 and is connected with the connecting rod. The third flexible member 400 is penetrated in the first mounting seat 401, the connection rod and the second mounting seat 501.

The first mounting seat 401 is mounted on the first supporting seat 402, and the second mounting seat 501 is mounted on the second supporting seat 502. A third elastic member 406 is disposed between the first mounting seat 401 and the first supporting seat 402, and a fourth elastic member 506 is disposed between the second mounting seat 501 and the second supporting seat 502, so as to avoid overall vibration of the frame.

The outer side of the first rotating seat 403 is rotatably installed at the inner side of the first supporting seat 402, the first damper 408 is installed at the inner side of the first rotating seat 403 through the fourth rivet 409, and the first rear wheel 160 is installed at the outer side of the first supporting seat 402. The outer side of the second rotating seat 503 is rotatably installed at the inner side of the second supporting seat 502, the second barrier 508 is installed at the inner side of the second rotating seat 503 by a fifth rivet 509, and the second rear wheel 170 is installed at the outer side of the second supporting seat 502.

One end of the third flexible member 400 is connected to the first swivel base 403, and the other end is connected to the second swivel base 503.

The first rotating seat 403 is provided with a second inclined surface, and the second inclined surface is used for contacting with the first stop lever 404 in the rotating process of the first rotating seat 403, then driving the first stop lever 404 to extend axially, inserting the extended first stop lever into the spoke gap of the first rear wheel 160, and stopping the first rear wheel 160 from rotating continuously. The second rotating seat 503 is provided with a third inclined surface, and the third inclined surface is used for contacting with the second stop lever 504 in the rotating process of the second rotating seat 503, then driving the second stop lever 504 to extend axially, inserting the extended second stop lever into the spoke gap of the second rear wheel 170, and stopping the second rear wheel 170 from continuing to rotate, so as to achieve the braking purpose.

A fifth elastic member 407 is further disposed between the first rotating seat 403 and the first supporting seat 402, where the fifth elastic member 407 is used to assist the first stop lever 404 to return to release the blocking effect on the first rear wheel 160. A sixth elastic member 507 is further disposed between the second rotating seat 503 and the second supporting seat 502, and the sixth elastic member 507 is used for assisting the second stop lever 504 to reset, so as to release the blocking effect on the second rear wheel 170.

The first rotating seat 403 is further provided with a first stop groove, and the first stop groove is arranged at the tail end of the second inclined plane, so that when the second inclined plane drives the first stop lever 404 to move to a position capable of blocking the first rear wheel 160 from rotating, the first stop lever 404 can enter the first stop groove, and therefore the first stop lever 404 is guaranteed not to reset automatically under a braking state, and the first rear wheel 160 can rotate continuously. The second rotating seat 503 is provided with a second stop groove, and the second stop groove is arranged at the tail end of the third inclined plane, so that when the third inclined plane drives the second stop lever 504 to move to a position capable of blocking the second rear wheel 170 from rotating, the second stop lever 504 can enter the second stop groove, and the second stop lever 504 is prevented from being reset accidentally. When the braking state needs to be released, the first stop lever 404 can be separated from the first stop slot, and the second stop lever 504 can be separated from the second stop slot by only slightly pushing the cart.

The first rear wheel 160 is mounted on the outer side of the first supporting seat 402 through a first pin, the first blocking piece 405 is inserted into the insertion hole of the first supporting seat 402 and is inserted into the groove of the first pin, so that the first rear wheel 160 and the first supporting seat 402 are relatively fixed, and when the first rear wheel 160 is dismounted, the first blocking piece 405 is pulled out, so that the first rear wheel 160 can be dismounted quickly. The second rear wheel 170 is mounted on the outer side of the second supporting seat 502 through a second pin, the second baffle 505 is inserted into the insertion hole of the second supporting seat 502 and is inserted into the groove of the second pin, so that the second rear wheel 170 and the second supporting seat 502 are relatively fixed, and when the second rear wheel 170 is dismounted, the second baffle 505 is pulled out, so that the second rear wheel 170 can be dismounted quickly.

As shown in fig. 10, the brake pedal is mounted on the first rotary seat 403.

And (3) a frame folding process:

as shown in fig. 11, the ceiling lever 60 is first folded upward so as to be substantially parallel to the handle upper lever 10;

Next, as shown in fig. 12, the unlocking mechanism is operated to unlock the second locking mechanism, and then the handle upper bar 10 is folded downward, so that the ceiling bar 60 and the handle upper bar 10 are folded backward below the handle lower bar 20 and substantially parallel to the handle lower bar 20;

in the process of rotating the upper handle rod 10 relative to the lower handle rod 20, the turntable 301 drives the first flexible piece 103 to move upwards, so as to drive the first locking piece 102 to retract, and the first locking mechanism realizes partial unlocking, at this time, as shown in fig. 13, the sliding sleeve 101 can move downwards relative to the lower handle rod 20, so that the ceiling rod 60, the upper handle rod 10 and the lower handle rod 20 can rotate forwards together until the lower handle rod 20 and the rear foot rod 40 are basically in a straight line;

When the lower handle bar 20 is folded upwards, that is, rotated relative to the front foot bar 30 and the rear foot bar 40, the first inclined surface in the connecting seat 201 drives the bayonet 202 to move transversely, so as to drive the two second flexible pieces 106 to move relatively, and further retract the second locking piece 105, and the first locking mechanism is completely unlocked, at this time, as shown in fig. 14, the sliding sleeve 101 can move upwards relative to the lower handle bar 20 until passing over the fixing seat 107 and continuing to move upwards, so that the ceiling bar 60, the upper handle bar 10 and the lower handle bar 20 can continue to fold forwards until being folded to overlap with the front foot bar 30, as shown in fig. 15, and at this time, the frame is in a completely folded state, and the volume is contracted to the minimum.

The braking process comprises the following steps:

The brake pedal is pressed down, the first rotating seat 403 rotates, and the second inclined surface drives the first stop lever 404 to extend axially during the rotation process and insert into the spoke gap of the first rear wheel 160, so as to stop the first rear wheel 160 from continuing to rotate.

When the first rotating seat 403 rotates, the third flexible member 400 can drive the second rotating seat to rotate, and the third inclined surface drives the second stop lever 504 to extend axially in the rotating process and insert into the spoke gap of the second rear wheel 170, so as to stop the second rear wheel 170 from continuing to rotate, thereby achieving the purpose of braking.

Based on the stroller frame, the invention further provides a stroller, which comprises the stroller frame.

The positive technical effects of the stroller frame in the foregoing embodiments are also applicable to strollers, and are not described herein.

It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents of part of the technical features of the present invention can be made without departing from the principles of the present invention, and such modifications and equivalents are intended to be covered in the scope of the technical solution claimed in the present invention.

Claims

1. A frame of a baby carriage, which comprises a frame body, characterized by comprising the following steps:

A handle upper bar (10);

A handle lower rod (20) connected to the handle upper rod (10);

a forefoot lever (30);

A rear foot lever (40);

A support bar (50) having a first end connected to the handle lower bar (20) and a second end connected to the rear foot bar (40);

A first locking mechanism (100) for locking the handle lower bar (20) and the support bar (50) and partially unlocking after the handle upper bar (10) and the handle lower bar (20) are folded relatively so that a first end of the support bar (50) can slide relative to the handle lower bar (20) in a direction away from the handle upper bar (10), the first locking mechanism (100) comprising a sliding sleeve (101), the sliding sleeve (101) being fitted over the handle lower bar (20) and connected to the first end of the support bar (50), the end of the sliding sleeve (101) remote from the handle upper bar (10) being provided with a first locking hole (1011), and

The connecting mechanism (200) is used for connecting the front foot rod (30), the rear foot rod (40) and the handle lower rod (20) and driving the first locking mechanism (100) to be completely unlocked after the handle lower rod (20) rotates relative to the front foot rod (30) and the rear foot rod (40), so that the supporting rod (50) can slide relative to the handle lower rod (20) along the direction approaching to the handle upper rod (10);

wherein, the one end that is close to of sliding sleeve (101) handle upper rod (10) is equipped with second lockhole (1012), first locking mechanical system (100) still includes:

A second lock block (105) inserted into the second lock hole (1012) for restricting the sliding sleeve (101) from moving from a position locked relative to the handle lower rod (20) to a direction approaching the handle upper rod (10), and

And the first end of the second flexible piece (106) is connected with the second locking piece (105), the second end of the second flexible piece is connected with the connecting mechanism (200) and is used for driving the second locking piece (105) to be separated from the second locking hole (1012) when the handle lower rod (20) rotates relative to the front foot rod (30) and the rear foot rod (40) so as to release the limit on the movement of the sliding sleeve (101) along the direction close to the handle upper rod (10).

2. The stroller frame of claim 1, wherein the first locking mechanism (100) further comprises:

A first lock block (102) inserted into the first lock hole (1011) for restricting the movement of the slide sleeve (101) from a position locked relative to the handle lower rod (20) in a direction away from the handle upper rod (10), and

And the first flexible piece (103) is connected with the upper handle rod (10) at a first end and connected with the first locking piece (102) at a second end, and is used for driving the first locking piece (102) to be separated from the first lock hole (1011) when the upper handle rod (10) is folded relative to the lower handle rod (20) so as to release the limit on the movement of the sliding sleeve (101) along the direction away from the upper handle rod (10).

3. The stroller frame according to claim 2, wherein the first locking mechanism (100) further comprises a first resilient member (104) for driving the first locking piece (102) out of the first locking hole (1011) to reinsert into the first locking hole (1011).

4. The stroller frame of claim 1, wherein the first locking mechanism (100) further comprises:

the fixed seat (107) is arranged in the lower handle rod (20) and is provided with a first lock cavity for accommodating the second lock block (105);

A slider (108) slidably arranged with respect to the fixed seat (107), one end of the slider (108) away from the handle upper rod (10) being connected to the second flexible member (106), a first hole (1081) being provided, the first hole (1081) being shaped so as to enable the second locking piece (105) to extend or retract into the first locking cavity when the slider (108) moves with respect to the fixed seat (107), and

A first connecting rod (109) connected with the second locking block (105) and inserted in the first hole (1081).

5. The stroller frame according to claim 4, wherein the fixed seat (107) is further provided with a second lock cavity for accommodating the first lock block (102), the first lock block (102) moves relative to the fixed seat (107) under the action of the first flexible member (103) to extend or retract the second lock cavity, the sliding block (108) is provided with a second hole (1082), the first locking mechanism (100) further comprises a second connecting rod (111), the second connecting rod (111) is connected with the first lock block (102) and is inserted into the second hole (1082), and the shape of the second hole (1082) is configured to enable the first lock block (102) to retract into the second lock cavity under the action of the first flexible member (103) and enable the first lock block (102) to move in the extending direction of the second flexible member (106) when the sliding block (108) moves relative to the fixed seat (107).

6. The stroller frame according to claim 1, wherein the first locking mechanism (100) further comprises a second resilient member (112) for driving the second lock block (105) out of the second lock hole (1012) for reinsertion into the second lock hole (1012).

7. The stroller frame of claim 1, wherein the connection mechanism (200) comprises:

A connecting seat (201) mounted on the front foot bar (30) and provided with a first mounting groove in which the handle lower bar (20) is rotatably mounted, and

The clamping pin (202) is movably arranged on the handle lower rod (20) and connected with the second flexible piece (106) and is used for moving relative to the handle lower rod (20) when the handle lower rod (20) rotates relative to the connecting seat (201) so as to drive the second flexible piece (106) to move.

8. The stroller frame according to claim 7, characterized in that the connection seat (201) is provided with a first inclined surface, which contacts the bayonet (202) and drives the bayonet (202) into movement when the handle lower bar (20) is rotated relative to the connection seat (201).

9. The stroller frame according to claim 7, characterized in that the connection mechanism (200) further comprises a first sleeve (203), the first sleeve (203) is sleeved on the outer periphery of the handle lower bar (20), and the outer periphery of the first sleeve (203) is provided with a first rib.

10. The stroller frame according to claim 7, characterized in that a second mounting slot is further provided in the connection seat (201), and the rear foot bar (40) is rotatably mounted in the second mounting slot.

11. The stroller frame of claim 10, wherein the connection mechanism (200) further comprises a second sleeve (204), the second sleeve (204) is sleeved on the outer periphery of the rear foot bar (40), and the outer periphery of the second sleeve (204) is provided with second ribs.

12. The stroller frame of claim 1, further comprising:

A second locking mechanism (300) for locking the handle upper bar (10) and the handle lower bar (20), and

And the unlocking mechanism is used for unlocking the second locking mechanism (300).

13. The stroller frame of claim 1, further comprising a seat plate (110), a first link (140) and a second link (150), wherein the front foot bar (30) is inverted-T-shaped, the seat plate (110) is connected to the handle lower bar (20), a first end of the first link (140) is connected to the seat plate (110), a second end of the first link (140) is connected to the second link (150), a middle portion of the first link (140) is connected to the front foot bar (30), and the second link (150) is connected to the rear foot bar (40).

14. The stroller frame of claim 1, further comprising a first rear wheel (160), a second rear wheel (170), and a brake mechanism, the first rear wheel (160) and the second rear wheel (170) being rotatably mounted on the rear foot bar (40), the brake mechanism being configured to fix the first rear wheel (160) and the second rear wheel (170) relative to the rear foot bar (40).

15. The stroller frame of claim 14, wherein the brake mechanism comprises:

a first stop lever (404);

a second stop lever (504);

A first rotary seat (403) rotatably disposed on the rear foot lever (40) for driving the first bar (404) to move in the axial direction of the first rear wheel (160) when rotating relative to the first rear wheel (160) to block the first rear wheel (160) from rotating;

a brake pedal mounted on the first rotary seat (403);

a second rotating seat (503) rotatably provided on the rear foot lever (40) for driving the second bar (504) to move in the axial direction of the second rear wheel (170) when rotating relative to the second rear wheel (170) to block the second rear wheel (170) from rotating, and

And the first end of the third flexible piece (400) is connected with the first rotating seat (403), and the second end of the third flexible piece is connected with the second rotating seat (503) and is used for driving the second rotating seat (503) to rotate after the brake pedal is stepped on and the first rotating seat (403) is driven to rotate.

16. The stroller frame according to claim 15, characterized in that the first swivel seat (403) is provided with a second bevel for contacting the first bar (404) and driving the first bar (404) in motion, and/or that the second swivel seat (503) is provided with a third bevel for contacting the second bar (504) and driving the second bar (504) in motion.

17. The stroller frame according to claim 16, characterized in that the first swivel seat (403) is provided with a first stop slot arranged at the end of the second ramp for entering the first stop slot after driving the first bar (404) to a position blocking the rotation of the first rear wheel (160), and/or the second swivel seat (503) is provided with a second stop slot arranged at the end of the third ramp for entering the second stop slot after driving the second bar (504) to a position blocking the rotation of the second rear wheel (170).

18. A stroller comprising a stroller frame according to any one of claims 1-17.