CN116265317B - High stability brake mechanism for strollers - Google Patents

Abstract

The present invention discloses a high-stability brake mechanism for a child stroller, comprising: a fixing member, a wheel and a pedal member. The fixing member is provided with a load-bearing stop block, and the fixing member is rotatably connected to the wheel hub; at least part of the brake matching portion is located on the side of the wheel hub facing the fixing member; the pedal member is connected to the fixing member, and the pedal member can rotate between an upper stop position and a lower stop position, and a brake active portion is provided on the side of the pedal member facing the wheel, and the pedal member is provided with a limit groove opening downward; when the pedal member rotates to the lower stop position, the load-bearing stop block stops against the top wall of the limit groove, and the brake active portion is inserted into the brake matching portion to limit the rotation of the wheel; when the pedal member rotates to the upper stop position, the brake active portion exits the brake matching portion to release the restriction on the wheel. The high-stability brake mechanism for a child stroller has high stability and reliability, simple structure and low manufacturing cost.

Description

High-stability braking mechanism of baby stroller

Technical Field

The invention relates to the field of child carts, in particular to a high-stability brake mechanism of a child cart.

Background

Today, in order to ensure the safety of children, the child pushchairs are generally provided with brakes.

Currently, in the field of child carts, the braking mechanisms of child carts are diverse. For example, the brake handle is arranged at the handrail, and the brake of the child trolley is controlled through the brake cable, but the brake mechanism is controlled through the brake cable connection, and the brake cable is easy to damage after long-time use, so that the reliability is reduced. Still other child strollers have a higher structural reliability by providing a brake mechanism at the wheels, but generally have a more complex structure.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the high-stability braking mechanism of the child stroller is high in reliability, simple in structure and low in cost.

The high-stability braking mechanism of the stroller provided by the embodiment of the invention is suitable for being configured at wheels of the stroller to realize braking, and comprises a fixing piece, a braking matching part and a pedal piece. The bicycle comprises a bicycle wheel, a pedal, a bicycle wheel, a brake matching part, a pedal, a brake driving part, a brake matching part and a pedal, wherein the bicycle wheel is provided with a bearing stop block, the bearing stop block is fixedly connected to the rear foot of the bicycle wheel and is rotatably connected with a hub of the bicycle wheel, at least part of the brake matching part is positioned on one side of the hub facing the fixing part, the pedal is rotatably connected to the bearing stop block, the rotation axis of the pedal deviates from the rotation axis of the bicycle wheel, the pedal can rotate between an upper stop position and a lower stop position, one side of the pedal facing the bicycle wheel is provided with the brake driving part, the pedal is provided with a limit groove with a downward opening, when the pedal rotates to the lower stop position, the bearing stop block is stopped on the top wall of the limit groove, the brake driving part is inserted into the brake matching part to limit the rotation of the bicycle wheel, and when the pedal rotates to the upper stop position, the brake driving part exits from the brake matching part to release the limit on the bicycle wheel.

According to the high-stability braking mechanism of the child stroller provided by the embodiment of the invention, at least part of the braking matching part is positioned on one side of the hub, which faces towards the fixing part, and the braking driving part is positioned on one side of the pedal, which faces towards the wheel, so that the wheel can be locked and unlocked conveniently by utilizing the rotation of the pedal, and the braking matching part and the braking driving part are visible from the outside. Therefore, when the two are not matched in place or foreign matters, abnormal sounds and the like exist, the observation and the elimination are convenient. The bearing stop block on the fixing piece can be matched with the limit groove on the pedal piece, so that the position of the pedal piece is limited. The high-stability brake mechanism of the children's barrow can be simple in structure and low in manufacturing cost while the reliability and the brake stability of the high-stability brake mechanism of the children's barrow are enhanced. In the distance with the axis of rotation of pedal spare, the footboard is farther than brake initiative portion, can reduce the laborious degree of pedal brake according to lever principle.

In some embodiments, the fixing member is rotatably connected to an axle located at the hub, the brake engaging portion includes a plurality of clamping plates, the plurality of clamping plates are disposed at intervals along a circumferential direction of the axle, a clamping groove is defined between two adjacent clamping plates, and the brake driving portion is inserted into at least one clamping groove when the pedal member is in the lower stop position. Therefore, the braking effect is good in a mode that the braking active part is inserted into the clamping groove, and the braking active part is not easy to separate. Therefore, the stability of the brake of the children's barrow is better, and the safety is improved.

In some embodiments, the axle is rotatably coupled to the load stop block. This structure can thereby improve the compactness of the mechanism.

Optionally, the bearing stop block is circular, the limit groove is in a U shape with a downward opening, and the limit opening is positioned at the bottom of the limit groove. Thus, the surface fit can be formed, and the large concentrated stress generated when the two are contacted can be avoided.

Further, the brake matching part comprises an end block, the end block is arranged at one end, far away from the wheel shaft, of the clamping plate, at least one side of the end block is provided with a guide surface, and the guide surface inclines towards one side, far away from the clamping plate, along the direction towards the wheel shaft. Therefore, the brake driving part can be smoothly inserted into the clamping groove through the guide surface when the brake driving part is stopped on the top surface of the clamping plate, and the possibility of fracture when the brake driving part collides with the brake matching part is reduced.

In some embodiments, the brake driving part comprises a brake block, the brake block is used for being inserted into the brake matching part to realize braking, the brake block extends along the circumferential direction of the rotation axis of the pedal piece, one end of the brake block, which is close to the wheel axis, is a head end, one end of the brake block, which is far away from the wheel axis, is a tail end, and the radial width of the brake block gradually increases from the head end to the tail end. Therefore, the brake driving part can be inserted into the clamping groove more smoothly, the brake driving part is not easy to separate, the failure probability of the brake is reduced, and the stability of the brake is improved.

Further, the brake driving part further comprises a reinforcing rib, the reinforcing rib is connected to the tail end of the brake block, and the reinforcing rib extends in an arc shape along the circumferential direction of the rotation axis of the pedal piece. Therefore, the structural strength of the brake driving part can be improved, and the stability of the brake is improved.

In some embodiments, one of the fixing member and the pedal member is provided with a travel limiting groove, the other of the fixing member and the pedal member is correspondingly provided with a limiting block, the limiting block moves in the limiting groove in the process of rotating between the upper stop position and the lower stop position, and when the pedal member rotates to the upper stop position or the lower stop position, the limiting block moves to the end corresponding to the travel limiting groove so as to limit the pedal member. From this, through the cooperation of stroke limit groove and stopper, can restrict the rotation range of pedal piece when rotating, make it go on stopping the position and stopping down between the position, improve pedal piece's operability to promote user's use experience.

Further, the travel limiting groove comprises limiting holes at two ends and a connecting part positioned between the two limiting holes, two side walls of the connecting part respectively protrude inwards to form pressing sheets, and a gap is reserved between the two pressing sheets. Therefore, the pressing sheets between the limiting holes at the two ends can form a blocking limiting effect on the limiting block, when the pedal piece rotates to the upper stopping position or the lower stopping position, the limiting block moves to the end part corresponding to the limiting groove, the pressing sheets can prevent the limiting block from being easily separated from the limiting hole, and accordingly the pedal piece is stably kept at the upper stopping position or the lower stopping position.

Further, the thickness of the pressing sheet gradually decreases in the inward protruding direction. And the pressing sheets are arranged on the two side walls of the travel limiting groove, so that the supporting effect of the pressing sheets on the limiting block is better. The variation of the thickness of the pressing sheet can reduce the laborious degree of stepping and lifting the pedal. And after the tabletting is thinned, the elasticity is increased, and the tablet is not easy to break.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is an exploded perspective view of a high stability braking mechanism for a stroller in accordance with an embodiment of the present invention.

Fig. 2 is a schematic view of a fixing member of a high stability braking mechanism of a stroller according to an embodiment of the present invention.

Fig. 3 is a schematic view of wheels of a high stability braking mechanism of a stroller in accordance with an embodiment of the present invention.

FIG. 4 is a schematic view of the foot piece of the high stability brake mechanism of the stroller according to an embodiment of the present invention.

FIG. 5 is a schematic view of the foot rest in the up-stop position according to an embodiment of the present invention.

Fig. 6 is a schematic view of the pedal in the down-stop position according to the embodiment of the present invention.

Fig. 7 is a schematic view of an embodiment of the present invention with a wheel in an unlocked state.

Fig. 8 is a schematic view of a wheel in a locked state according to an embodiment of the present invention.

FIG. 9 is a schematic illustration of a high stability braking mechanism of a stroller in accordance with an embodiment of the present invention in structural connection with a portion of the stroller.

Reference numerals:

High stability brake mechanism 100 of children's barrow,

A fixing piece 10, a bearing stop block 11, a limiting block 12,

Wheel 20, hub 21, axle 211, brake engagement portion 22, clip 221, clip groove 222, end block 223, guide surface 2331,

Pedal 30, brake active portion 31, brake block 311, head end 3111, tail end 3112, reinforcing rib 312, limit groove 32, travel limit groove 33, limit hole 331, pressing piece 332, pedal 34, side plate 35,

And a connecting shaft 40.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

In the description of the present invention, it should be understood that the terms "center," "width," "thickness," "upper," "lower," "top," "bottom," "inner," "outer," "axial," "circumferential," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present invention, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

A high stability brake mechanism 100 for a stroller in accordance with an embodiment of the present invention is described below with reference to fig. 1-9.

As shown in fig. 1 to 4, the high stability brake mechanism 100 for a stroller according to an embodiment of the present invention is adapted to be disposed at wheels 20 of the stroller to achieve braking, and the high stability brake mechanism 100 for a stroller includes a fixing member 10, a brake engagement portion 22, and a pedal member 30. The fixing element 10 is provided with a bearing stop 11, and the fixing element 10 is fixedly connected to the rear foot of the stroller and rotatably connected to the hub 21 of the wheel 20. At least part of the brake engagement portion 22 is located on the side of the hub 21 facing the mount 10. The pedal member 30 is rotatably connected to the fixing member 10, and the rotation axis of the pedal member 30 is deviated from the rotation axis of the wheel 20, that is, the rotation axis of the pedal member 30 relative to the fixing member 10 and the rotation axis of the fixing member 10 relative to the wheel 20 are not collinear, the pedal member 30 can rotate between an upper stop position and a lower stop position, a brake driving portion 31 is arranged on one side of the pedal member 30 facing the wheel 20, and a limit groove 32 with a downward opening is formed in the pedal member 30. When the pedal 30 rotates to the lower stop position, the bearing stop block 11 is stopped against the top wall of the limit groove 32, and the brake driving part 31 is inserted into the brake matching part 22 to limit the rotation of the wheel 20. When the pedal 30 is rotated to the upper stop position, the brake driving portion 31 exits the brake engaging portion 22 to release the restriction on the wheel 20. The pedal member 30 has a pedal 34, and the pedal 34 is located on a side of the brake active portion 31 away from the rotation axis of the pedal member 30.

Such a stroller high stability brake mechanism 100 is typically mounted on a stroller frame that moves the mount 10 when the stroller is pushed. As the wheel 20 contacts the ground, the fixing member 10 moves to roll the wheel 20. In some embodiments, the stroller has a power system, such as an electric motor, coupled to the wheels 20 to drive the wheels 20 in rolling motion.

When the stroller is to be parked at a certain position, the user can step on the pedal member 30 to rotate the pedal member 30 relative to the fixed member 10. As shown in fig. 5 and 6, the footrest member 30 can be rotated from the upper stopper toward the lower stopper. The pedal 30 can prevent the wheel 20 from rolling when in the lower stop position, thereby realizing braking. When locking is not required, the user can lift the pedal 30 upward with his foot or a tool to rotate the pedal 30 from the lower stop position toward the upper stop position, unlock the wheel 20, and restore the wheel 20 to freely rotate.

Because the wheel 20 is provided with the brake matching portion 22 on the hub 21, and the pedal 30 is provided with the brake driving portion 31 on the side facing the wheel 20, when the pedal 30 rotates from the upper stop position to the lower stop position, the brake driving portion 31 on the pedal 30 approaches the brake matching portion 22 on the wheel 20 until the two portions are in contact and locked, thereby realizing locking of the wheel 20. When the pedal 30 rotates from the lower stop position to the lower stop position, the brake driving part 31 on the pedal 30 is gradually far away from the brake matching part 22 on the wheel 20, so that the pedal and the wheel are separated from each other to unlock, and the wheel 20 is unlocked.

Here, at least part of the brake engagement portion 22 is located on the side of the hub 21 facing the fixing member 10, and the brake active portion 31 is located on the side of the pedal member 30 facing the wheel 20, both the brake engagement portion 22 and the brake active portion 31 being visible from the outside. Therefore, when the two are not matched in place or foreign matters, abnormal sounds and the like exist, the observation and the elimination are convenient.

The force-bearing stop block 11 on the fixing member 10 can be mutually matched with the limit groove 32 on the pedal member 30. When the pedal 30 is in the lower stop position, the bearing stop block 11 can stop in the limiting groove 32 so as to play a limiting role on the pedal 30 in the lower stop position.

It will be appreciated that when the wheel 20 is to be locked, the pedal 30 is depressed to rotate the pedal 30 from the upper position to the lower position, and the pedal 30 is rotated excessively to cause damage to the stroller high stability brake mechanism 100 if the force is too large due to inaccurate control of the force by the pedal operation. Through setting up the cooperation of bearing stop dog 11 and spacing recess 32, can make pedal piece 30 when reaching the lower position of stopping, bearing stop dog 11 stop on the roof of spacing recess 32, prevent pedal piece 30 by the degree rotation to increase the stability of children's shallow high stability brake mechanism 100.

When the child car needs to release the brake, the pedal 30 is lifted, and the brake driving part 31 is separated from the brake matching part 22, so that the wheels 20 can resume free rotation. At this time, the force-bearing stopper 11 is separated from the limit groove 32. Therefore, the structure of the high-stability braking mechanism 100 of the child stroller is simplified and the reliability is improved while the child stroller is stably braked.

The shape of the force-bearing stopper 11 is not particularly limited, and the shape of the limit groove 32 is not particularly limited, and may be selected according to actual needs. For example, the shape of the bearing stop block 11 may be polygonal, and correspondingly, the top wall of the limit groove 32 is polygonal to be matched with the bearing stop block 11. Thus, the outer edge of the bearing stop block 11 is completely contacted with the top wall of the limit groove 32, and the polygonal matching shape can enable the bearing stop block 11 to be in contact with the limit groove 32 more tightly, so that sliding between the fixing piece 10 and the pedal piece 30 is prevented, and the stability of the high-stability brake mechanism 100 of the stroller in locking is improved.

Of course, the shape of the bearing stop block 11 may be circular, and the top wall of the corresponding limit groove 32 is in a circular arc shape capable of matching with the bearing stop block 11. Like this, through the cooperation of circular arc shape, can increase the fault tolerance when locking, when the position emergence slight deviation of bearing stopper 11 and spacing recess 32, convex contact surface can play the effect of rectifying to make the cooperation that bearing stopper 11 and spacing recess 32 are in the same place more stable.

As shown in fig. 1, in some embodiments, the mount 10 is rotatably coupled to an axle 211 located at the hub 21. The brake matching portion 22 includes a plurality of clamping plates 221, the plurality of clamping plates 221 are arranged at intervals along the circumferential direction of the wheel axle 211, a clamping groove 222 is defined between two adjacent clamping plates 221, and the brake driving portion 31 of the pedal 30 is inserted into at least one clamping groove 222 when the pedal is in a lower stop position. The brake driving part 31 is inserted into the clamping groove 222 so as to lock the wheels 20 of the child stroller, and the brake driving part 31 is inserted into the clamping groove 222 to achieve a better brake effect and not easy to separate. Therefore, the stability of the brake of the children's barrow is better, and the safety is improved.

Moreover, the brake driving portion 31 may be selectively inserted into one of the plurality of locking grooves 222, so that the brake driving portion 31 can be inserted into the locking groove 222 to brake when the wheel 20 is rotated to any angle. As shown by 8 of the detents 222 in fig. 1, the wheel 20 can be braked when rotated to any angle.

In the example of fig. 4 and 5, only one brake active portion 31 is provided for one foot pedal 34. In some embodiments, the braking active portion 31 may be plural. When the foot pedal 34 is in the down-stop position, the brake active portions 31 are inserted into the clamping grooves 222. Thus, the matching of the plurality of clamping grooves 222 and the plurality of braking active portions 31 can increase the reliability of the high-stability braking mechanism 100 of the stroller, and when one of the clamping plates 221 breaks due to failure, the remaining braking active portions 31 can still ensure the locking of the stroller wheels 20, so that the safety can be improved.

In some embodiments, as shown in FIG. 1, the axle 211 is rotatably coupled to the load stop 11. Thus, the bearing stop block 11 can play a dual-purpose role, not only can support the wheels 20 to rotate, but also can support the pedal 30 during braking, so as to prevent the pedal 30 from excessively swinging. This structure can thus improve the compactness of the mechanism.

Specifically, the wheel 20 can be locked by connecting the wheel axle 211 with the bearing stop block 11, and the pedal member 30 is also connected with the fixing member 10 because the bearing stop block 11 is formed on the fixing member 10, so that the components of the high stability braking mechanism 100 of the stroller are connected together, and the stability of the high stability braking mechanism 100 of the stroller can be increased.

Optionally, as shown in fig. 1, a connecting shaft 40 is disposed between the axle 211 and the bearing stop 11, and the axle 211 is rotatably connected to the bearing stop 11 through the connecting shaft 40. By providing the connecting shaft 40 between the axle 211 and the load-bearing stop 11, the stability and rigidity of the rotation of the wheel 20 can be increased, thereby increasing the service life of the stroller.

As shown in fig. 2, alternatively, the bearing stop block 11 is circular, the limit groove 32 is in a U shape with a downward opening, and the limit opening is located at the bottom of the limit groove 32. The circular bearing stop block 11 can form surface fit with the top of the U-shaped limiting groove 32, so that larger concentrated stress generated when the bearing stop block and the U-shaped limiting groove are contacted can be avoided, the pedal 30 is more stably stopped on the fixing piece 10, the pedal 30 is prevented from sliding out of the fixing piece 10, and the stability of the brake of the stroller is improved.

As shown in fig. 3, further, the brake engaging portion 22 includes an end block 223, the end block 233 is disposed at an end of the chucking plate 221 away from the wheel shaft 211, at least one side of the end block 223 is provided with a guide surface 2331, and the guide surface 2331 is inclined toward a side away from the chucking plate 221 where it is located in a direction toward the wheel shaft 211. Thus, in a cross-section perpendicular to the axis of the axle 211, the end guide surface 2331 forms a ramp or curved surface in a direction away from the catch plate 221. When the pedal 34 rotates from the upper stop position to the lower stop position, the brake driving portion 31 may abut against the top surface of the clamping plate 221, so that the brake driving portion 31 cannot be smoothly inserted into the clamping groove 222, and the wheel 20 cannot be locked. The end block 223 is provided with a guide surface 2331, so that the brake driving portion 31 can be smoothly inserted into the locking groove 222 through the guide surface 2331 when it is stopped against the top surface of the locking plate 221. Thus, the possibility of breakage when the brake driving part collides with the brake matching part is reduced, and the stability of the high-stability brake mechanism 100 of the child stroller during braking can be increased.

Further, the end block 223 has guide surfaces 2331 on both sides. The guide surfaces 2331 provided on both sides can increase the probability of inserting the brake driving part 31 into the clamping groove 222, thereby further improving the stability. In the embodiment, the end block 223 at the end of the clamping plate 221 forms an equilateral triangle structure, so that the brake driving part 31 can be guided by the guiding surface 2331 of the end block 223 and smoothly enter the clamping groove 222 no matter being clamped into any side of the front side and the rear side of the clamping plate 221.

It should be noted that the cross-sectional shape of the end block 223 on the axis perpendicular to the axle 211 is not particularly limited herein, and the cross-section of the end block 223 may include a triangle or a semicircle. When the cross section of the end block 223 is semicircular, the outer surface of the end block 223 forms a smooth cambered surface, and when the brake driving part 31 is inserted into the clamping groove 222, the cambered surface cannot cause clamping on the brake driving part 31, so that the stability of the high-stability brake mechanism 100 of the stroller is improved.

As shown in fig. 4, in some embodiments, the brake driving portion 31 includes a brake block 311, where the brake block 311 is inserted into the brake engagement portion 22 to perform braking, the brake block 311 extends along a circumferential direction of the rotation axis of the pedal 30, a head end 3111 is located at an end of the brake block 311 near the axis of the wheel 20, a tail end 3112 is located at an end of the brake block 311 away from the axis of the wheel 20, and a radial width of the brake block 311 increases gradually from the head end 3111 to the tail end 3112. The brake block 311 is driven to be inserted into and withdrawn from the brake matching part 22 in the process of driving the pedal 30 to rotate by external force, so that the stroller can realize braking and unlocking. The brake block 311 extends along the circumferential direction of the rotation axis of the pedal 30 to form an arc shape, one end of the brake block 311, which is close to the axis of the wheel 20, is a head end 3111, one end of the brake block 311, which is far away from the axis of the wheel 20, is a tail end 3112, and the brake block 311 is gradually clamped into the brake matching portion 22 from the head end 3111 to the tail end 3112 to realize braking in the process of trampling the pedal 30 by external force. The radial width of the brake block 311 gradually increases from the head end 3111 to the tail end 3112, an inclined surface gradually away from the arc center line of the brake block 311 is formed in the direction from the head end 3111 to the tail end 3112 of the brake block 311, and when the brake driving portion 31 is inserted into the brake matching portion 22, the inclined surface formed on the brake block 311 corresponds to the inclined surface on the end block 223 to perform a guiding function, so that the brake driving portion 31 is inserted into the clamping groove 222 more smoothly. And the head end 3111 and the tail end 3112 of the brake block 311 are wide, and are easy to insert and difficult to separate, so that the probability of failure in braking can be reduced, the possibility that the brake block 311 is separated from the brake matching portion 22 by itself is reduced, and the stability of braking is improved.

It can be understood that the shape of the brake block 311 may be semicircular, and when the cross-sectional shape of the end block 223 of the clamping plate 221 is semicircular, the arc surface of the brake block 311 can slide with the arc surface of the end block 223, so that the brake driving portion 31 is smoothly inserted into the clamping groove 222.

Further, the brake driving portion 31 includes a reinforcing rib 312, and the reinforcing rib 312 is connected to the tail end 3112 of the brake block 311. The strengthening rib 312 links to each other with the afterbody, and brake block 311 and strengthening rib 312 are all fixed connection on mounting 10, and strengthening rib 312 and brake block 311 form a whole on mounting 10 like this, can improve the structural strength of brake initiative portion 31 to increase the stability of brake.

Wherein, the reinforcing rib 312 is connected to the tail end 3112 of the brake block 311, when the brake driving portion 31 is inserted into the clamping groove 222, the brake block 311 is inserted into the clamping groove 222 between the clamping plate 221 and the clamping plate 221, and the reinforcing rib 312 contacts with the tail end 3112 to realize supporting. In this way, the stiffener 312 can provide some support when the stroller is braked, reducing the chance of breakage.

As shown in fig. 4, in some embodiments, one of the fixing member 10 and the pedal member 30 is provided with a travel limiting groove 33, the other of the fixing member 10 and the pedal member 30 is correspondingly provided with a stopper 12, the stopper 12 moves in the travel limiting groove 33 during the rotation of the pedal member 30 between the upper stop position and the lower stop position, and when the pedal member 30 rotates to the upper stop position or the lower stop position, the stopper 12 moves to the end corresponding to the travel limiting groove 33 to realize the limitation of the pedal member 30. Through the cooperation of travel limiting groove 33 and stopper 12, can restrict the rotation range of foot rest 30 when rotating, make it go on moving between the upper stop position and the lower stop position, improve the maneuverability of footboard 34 to promote user's use experience.

It is to be understood that the fixing member 10 may be provided with the travel limiting groove 33, the pedal member 30 may be provided with the stopper 12, the fixing member 10 may be provided with the stopper 12, and the pedal member 30 may be provided with the travel limiting groove 33. The structure of the stroke limiting groove 33 is not particularly limited herein, as long as the limitation of the pedal 30 can be achieved. Also, the shape of the stopper 12 is not particularly limited, and the stopper 12 may be a semicircular protrusion formed on the fixing member 10 or the pedal member 30, or may be a cylindrical protrusion. Can be selected according to the actual use requirement.

Further, the travel limiting groove 33 includes limiting holes 331 at two ends and a connecting portion between the limiting holes 331, two sidewalls of the connecting portion respectively protrude inward to form pressing pieces 332, and a gap is provided between the pressing pieces 332. When the pedal member 30 rotates to the upper stop position, the limiting block 12 is stopped against the limiting hole 331 at the lower end of the travel limiting groove 33, and under the action of gravity, the pedal member 30 has a downward movement tendency, that is, the limiting block 12 moves towards the upper end limiting hole 331 relative to the travel limiting groove 33, and at this time, the pressing piece 332 arranged between the two limiting holes 331 can block the limiting block 12, so that the pedal member 30 is fixed at the upper stop position.

One of the pressing pieces 332 is connected to the inner wall of one side of the travel limiting groove 33, the other side is not connected, and the pressing piece 332 has certain elasticity. Thus, in the process that the pedal 30 steps from the upper stop position to the lower stop position, the pressing piece 332 deforms under the action of pressure, the limiting block 12 can move from the limiting hole 331 at the upper end to the limiting hole 331 at the lower end, and the brake driving part 31 is inserted into the clamping groove 222 along with the rotation of the pedal 30, so that the braking of the stroller is realized. After the stopper 12 moves from the upper end-limiting hole 331 to the lower end-limiting hole 331, the pressing piece 332 elastically restores its shape according to itself.

In addition, the deformation and recovery of the pressing piece 332 can provide a sense of paragraph, so that the user can know the position of the pedal 30 after operating the pedal 30, thereby improving the user experience.

Further, the thickness of the pressing piece 332 gradually decreases in the inward protruding direction. The gap is left between the two side pressing sheets 332, so that the limiting block 12 can smoothly pass through, and the pressing sheets 332 are arranged on the two side walls of the stroke limiting groove 33, so that the supporting effect of the pressing sheets 332 on the limiting block 12 is better. While the variation in thickness of the presser 332 reduces the effort required to step on and lift the foot rest 30. And the elasticity increases after the pressing piece 332 is thinned, is not easy to break.

It should be noted that, the material of the pressing piece 332 is not particularly limited, and the pressing piece 332 may include a plastic piece or a metal spring piece. Can be selected according to actual needs.

In some embodiments, the foot rest 30 includes a pedal 34 and two side plates 35. Two side plates 35 are connected to opposite sides of the pedal 34, and two side plates 35 are connected to opposite sides of the fixing member 10, respectively. The user can switch the pedal 30 between the upper and lower stop positions by operating the pedal 34, and a space can be formed between the two side plates 35 and the pedal 34 to house the fixing member 10 therein. When the pedal 30 is switched between the upper stop position and the lower stop position, the edge of the connecting part between the pedal 34 and the side plate 35 can be stopped against the outer surface of the fixing member 10, and the rotation angle of the pedal 30 can be limited by the contact between the pedal 30 and the fixing member 10, so that the stability of the high-stability brake mechanism 100 of the stroller can be improved.

Further, the two side plates 35 form a rotation shaft at the connection with the fixing member 10, and the rotation shaft is rotatably connected with the fixing member 10. The pedal 30 can be rotated between the upper stop position and the lower stop position by the rotating shaft, so that the braking and unlocking of the stroller are realized.

Specifically, the pedal 34 is located on the side of the brake active portion 31 away from the rotational axis of the pedal member 30. That is, the pedal 34 is farther than the brake active portion 31 in the distance from the rotational axis of the pedal member 30. According to the lever principle, when the pedal 34 is stepped on, a force greater than the stepping force can be generated to act on the brake driving portion 31, so that the degree of effort of stepping on the brake by foot can be reduced.

The following describes in detail the operation of a high stability brake mechanism 100 for a stroller in accordance with an embodiment of the present invention with reference to fig. 1-4:

When the stroller is to be stopped at a certain position, the user can step on the pedal 30 by foot, and the pressing piece 332 on the travel limiting groove 33 deforms under the action of external force, so that the limiting block 12 is separated from the limiting hole 331 at the upper end, and the pedal 30 rotates relative to the fixing member 10. The pedal member 30 can rotate from the upper stop position to the lower stop position, and the brake block 311 on the brake driving portion 30 gradually snaps into the brake matching portion 22 from the head end 3111 to the tail end 3112 to achieve braking. When the pedal 30 enters the lower stop position, the limiting block 12 moves from the limiting hole 331 at the upper end to the limiting hole 331 at the lower end, the pressing piece 332 elastically restores the shape according to the self, and the bearing stop block 11 stops in the limiting groove 32, so that the limiting effect is achieved on the pedal 30 in the lower stop position.

When the child car needs to release the brake, the pedal 30 is lifted, and the pressing piece 332 on the travel limiting groove 33 deforms under the action of external force, so that the limiting block 12 is separated from the limiting hole 331 at the lower end, and the pedal 30 rotates relative to the fixing piece 10. The pedal 30 can rotate from the lower stop position to the upper stop position, and the brake block 311 on the brake driving part 31 is gradually separated from the brake matching part 22, so that the wheel 20 is recovered to rotate freely. When the pedal 30 enters the upper stop position, the limiting block 12 moves from the limiting hole 331 at the lower end to the limiting hole 331 at the upper end, and the pressing piece 332 elastically restores the shape according to the self-elasticity, so that the limiting block 12 is limited in the limiting hole 331 at the upper end, and the pedal 30 is prevented from rotating under the action of self gravity, so that the pedal 30 is fixed at the upper stop position.

Other constructions of the stroller high stability brake mechanism 100, such as bearings and tires, and operation thereof, according to an embodiment of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description herein, reference to the term "embodiment," "example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.

Claims (10)

1. A stroller high stability brake mechanism (100) adapted for deployment at a stroller wheel (20) to effect braking, comprising:

the fixing piece (10), the fixing piece (10) is provided with a bearing stop block (11), and the fixing piece (10) is fixedly connected to the rear foot of the baby carriage and is rotatably connected with the hub (21) of the wheel (20);

a brake engagement portion (22) provided to the wheel (20), at least a part of the brake engagement portion (22) being located on a side of the hub (21) facing the fixing member (10);

the pedal piece (30) is rotatably connected to the fixing piece (10), and the rotation axis of the pedal piece (30) deviates from the rotation axis of the wheel, the pedal piece (30) can rotate between an upper stop position and a lower stop position, a brake driving part (31) is arranged on one side, facing the wheel (20), of the pedal piece (30), and a limit groove (32) with a downward opening is formed in the pedal piece (30);

When the pedal piece (30) rotates to the lower stop position, the bearing stop block (11) is stopped against the top wall of the limit groove (32), and the brake driving part (31) is inserted into the brake matching part (22) to limit the rotation of the wheel (20);

When the pedal piece (30) rotates to the upper stop position, the brake driving part (31) exits the brake matching part (22) to release the limit on the wheel (20);

The brake driving part (31) comprises a brake block (311), the brake block (311) is used for being inserted into the brake matching part (22) to realize braking, one end, close to the axis of the wheel (20), of the brake block (311) is a head end (3111), one end, far away from the axis of the wheel (20), of the brake block (311) is a tail end (3112), and the radial width of the brake block (311) is gradually increased from the head end (3111) to the tail end (3112).

2. The stroller high-stability brake mechanism (100) according to claim 1, wherein the fixing member (10) is rotatably connected to an axle (211) located at the hub (21), the brake engaging portion (22) includes a plurality of clips (221), the plurality of clips (221) are disposed at intervals along a circumference of the axle (211) of the hub (21), a clip groove (222) is defined between two adjacent clips (221), and the brake driving portion (31) is inserted into at least one clip groove (222) when the pedal member (30) is in the lower stop position.

3. The stroller high stability brake mechanism (100) of claim 2, wherein the axle (211) is rotatably connected to the load bearing stop (11).

4. The high stability brake mechanism (100) of a stroller of claim 2, wherein the force-bearing stop block (11) is circular and the limit groove (32) is U-shaped with a downward opening.

5. The stroller high stability brake mechanism (100) according to claim 2, wherein the brake engagement portion (22) comprises an end block (223), the end block (223) being provided at an end of the catch plate (221) remote from the axle (211), at least one side of the end block (223) being provided with a guiding surface (2331), the guiding surface (2331) being inclined in a direction towards the axle (211) towards a side remote from the catch plate (221) where it is located.

6. The stroller high stability brake mechanism (100) of claim 1, wherein the brake shoes (311) extend in a circumferential direction of the rotational axis of the footrest member (30).

7. The stroller high-stability brake mechanism (100) according to claim 6, wherein the brake driving portion (31) further comprises a reinforcing rib (312), the reinforcing rib (312) is connected to the tail end (3112) of the brake block (311), and the reinforcing rib (312) extends in an arc shape along a circumferential direction of the rotation axis of the pedal member (30).

8. The high stability brake mechanism (100) of a stroller according to claim 1, wherein one of the fixing member (10) and the pedal member (30) is provided with a travel limit groove (33), the other of the fixing member (10) and the pedal member (30) is correspondingly provided with a limit block (12), the limit block (12) moves in the limit groove (33) during rotation of the pedal member (30) between the upper limit position and the lower limit position, and when the pedal member (30) rotates to the upper limit position or the lower limit position, the limit block (12) moves to an end corresponding to the travel limit groove (33) so as to limit the pedal member (30).

9. The high stability brake mechanism (100) of a stroller of claim 8, wherein the travel limiting groove (33) includes limiting holes (331) at two ends and a connecting portion between the limiting holes (331), two side walls of the connecting portion respectively protrude inward to form pressing pieces (332), and a gap is provided between the pressing pieces (332).

10. The stroller high stability brake mechanism (100) of claim 9, wherein the tab (332) tapers in thickness in an inwardly protruding direction.