High-stability braking mechanism for baby stroller

Abstract

The present invention discloses a high-stability braking mechanism for a baby stroller, comprising: a fixing member, a wheel and a foot pedal member. The fixing member is provided with a bearing stop block, and the fixing member is rotatably connected to the hub of the wheel; at least part of the braking cooperation part is located on the side of the hub facing the fixing member; the foot pedal member is connected to the fixing member, and the foot pedal member can rotate between an upper stop position and a lower stop position. A braking active part is provided on the side of the foot pedal member facing the wheel, and a limiting groove with an opening downward is formed in the foot pedal member; when the foot pedal member rotates to the lower stop position, the bearing stop block abuts against the top wall of the limiting groove, and the braking active part is inserted into the braking cooperation part to limit the rotation of the wheel; when the foot pedal member rotates to the upper stop position, the braking active part withdraws from the braking cooperation part to release the limitation on the wheel. The high-stability braking mechanism of the baby stroller has high stability and reliability, a simple structure and low manufacturing cost.

Description

Technical Field

[0001] The present invention relates to the field of baby strollers, and particularly to a high-stability braking mechanism for a baby stroller. Background Art

[0002] Nowadays, in order to ensure the safety of children, brakes are generally provided on baby strollers.

[0003] At present, in the field of baby strollers, there are various braking mechanisms for baby strollers. For example, some baby strollers are provided with a brake handle at the armrest, and the brake of the baby stroller is controlled by a brake wire. However, this braking mechanism is connected and controlled by a brake wire, and the brake wire is easily damaged after long-term use, resulting in a decrease in reliability. There are also some baby strollers with a braking mechanism provided at the wheel. This structure has relatively high reliability, but generally has a more complex structure. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides a high-stability braking mechanism for a baby stroller, which has high reliability, a simple structure, and low cost.

[0005] The high-stability braking mechanism for a baby stroller according to an embodiment of the present invention is adapted to be configured at the wheel of a baby stroller to achieve braking. The high-stability braking mechanism for a baby stroller includes: a fixing member, a braking cooperation portion, and a foot pedal member. The fixing member is provided with a bearing stop block, and the fixing member is fixedly connected to the rear foot of the baby stroller and rotatably connected to the hub of the wheel; at least a part of the braking cooperation portion is located on the side of the hub facing the fixing member; the foot pedal member is rotatably connected to the fixing member, and the rotation axis of the foot pedal member deviates from the rotation axis of the wheel; the foot pedal member can rotate between an upper stop position and a lower stop position, a braking active portion is provided on the side of the foot pedal member facing the wheel, and a limiting groove opening downward is formed in the foot pedal member; when the foot pedal member rotates to the lower stop position, the bearing stop block abuts against the top wall of the limiting groove, and the braking active portion is inserted into the braking cooperation portion to restrict the rotation of the wheel; when the foot pedal member rotates to the upper stop position, the braking active portion withdraws from the braking cooperation portion to release the restriction on the wheel.

[0006] According to the high-stability braking mechanism of a baby stroller according to an embodiment of the present invention, at least a part of the braking cooperation part is located on the side of the wheel hub facing the fixing part, and the braking active part is located on the side of the pedal part facing the wheel, which facilitates locking and unlocking the wheel by using the rotation of the pedal part, and both the braking cooperation part and the braking active part are visible from the outside. Therefore, when the cooperation between the two is not in place, or there are foreign objects, abnormal noises, etc., it is convenient to observe and eliminate. The bearing stop block on the fixing part can cooperate with the limit groove on the pedal part to limit the position of the pedal part. It can improve the reliability and braking stability of the high-stability braking mechanism of the baby stroller while having a simple structure and low manufacturing cost. Among the distances from the rotation axis of the pedal part, the pedal is farther from the braking active part, and according to the lever principle, the effort of stepping on the brake can be reduced.

[0007] In some embodiments, the fixing part is rotatably connected to the axle of the wheel hub; the braking cooperation part includes a plurality of clamping plates, the plurality of clamping plates are arranged at intervals in the circumferential direction of the axle, and a clamping groove is defined between two adjacent clamping plates, and when the pedal part is in the lower limit position, the braking active part is inserted into at least one of the clamping grooves. Thus, the braking effect of the braking active part inserted into the clamping groove is better and it is not easy to disengage. This can make the braking stability of the baby stroller better, thereby improving safety.

[0008] In some embodiments, the axle is rotatably connected to the bearing stop block. Thus, this structure can improve the compactness of the mechanism.

[0009] Optionally, the bearing stop block is circular, the limit groove is U-shaped with an opening downward, and the limit opening is located at the bottom of the limit groove. Thus, a surface fit can be formed to avoid large concentrated stress when the two come into contact.

[0010] Furthermore, the braking cooperation part includes an end block, the end block is arranged at the end of the clamping plate away from the axle, and at least one side of the end block is provided with a guiding surface, and the guiding surface inclines away from the clamping plate where it is located along the direction towards the axle. Thus, it can enable the braking active part to smoothly insert into the clamping groove through the guiding surface when it abuts against the top surface of the clamping plate, reducing the possibility of breakage when the braking active part collides with the braking cooperation part.

[0011] In some embodiments, the braking active part includes a brake block, which is used to insert into the braking cooperation part to achieve braking; the brake block extends along the circumferential direction of the rotation axis of the pedal part, the end of the brake block close to the wheel axis is the head end, and the end of the brake block far from the wheel axis is the tail end, and the radial width of the brake block gradually increases from the head end to the tail end. Thereby, the braking active part can be inserted into the card slot more smoothly, is not easy to disengage, reduces the probability of braking failure, and improves the stability of braking.

[0012] Furthermore, the braking active part further includes a reinforcing rib, which is connected to the tail end of the brake block, and the reinforcing rib extends along the circumferential direction of the rotation axis of the pedal part in an arc shape. Thereby, the structural strength of the braking active part can be improved, thereby increasing the stability of braking.

[0013] In some embodiments, one of the fixing part and the pedal part is provided with a stroke limiting groove, and the other of the fixing part and the pedal part is correspondingly provided with a limiting block. During the rotation of the pedal part between the upper dead center and the lower dead center, the limiting block moves in the forming limiting groove, and when the pedal part rotates to the upper dead center or the lower dead center, the limiting block moves to the corresponding end of the stroke limiting groove to realize the limiting of the pedal part. Thereby, through the cooperation of the stroke limiting groove and the limiting block, the rotation amplitude of the pedal part during rotation can be limited, so that it moves between the upper dead center and the lower dead center, improving the operability of the pedal part to enhance the user experience.

[0014] Furthermore, the stroke limiting groove includes limiting holes at both ends and a connecting part located between the two limiting holes. Pressing pieces are respectively protruded inward from the two side walls of the connecting part, and there is a gap between the two pressing pieces. Thereby, the pressing pieces between the two end limiting holes can form a blocking and limiting effect on the limiting block. When the pedal part rotates to the upper dead center or the lower dead center and the limiting block moves to the corresponding end of the forming limiting groove, the setting of the pressing piece can prevent the limiting block from easily disengaging from the limiting hole, so that the pedal part is stably maintained at the upper dead center or the lower dead center.

[0015] Furthermore, the thickness of the pressing piece gradually decreases along the direction of inward protrusion. The pressing pieces are arranged on both side walls of the stroke limiting groove, which can make the supporting effect of the pressing piece on the limiting block better. The change in the thickness of the pressing piece can reduce the effort of stepping on and lifting the pedal part. Moreover, after the pressing piece is thinned, its elasticity increases and it is not easy to break.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the following description of embodiments in conjunction with the accompanying drawings, wherein:

[0018] Figure 1 is an exploded perspective view of a high-stability braking mechanism for a baby stroller according to an embodiment of the present invention.

[0019] Figure 2 is a schematic view of a fixing member of a high-stability braking mechanism for a baby stroller according to an embodiment of the present invention.

[0020] Figure 3 is a schematic view of a wheel of a high-stability braking mechanism for a baby stroller according to an embodiment of the present invention.

[0021] Figure 4 is a schematic view of a foot pedal member of a high-stability braking mechanism for a baby stroller according to an embodiment of the present invention.

[0022] Figure 5 is a schematic view of the foot pedal member in the upper dead center position according to an embodiment of the present invention.

[0023] Figure 6 is a schematic view of the foot pedal member in the lower dead center position according to an embodiment of the present invention.

[0024] Figure 7 is a schematic view of the wheel in the unlocked state according to an embodiment of the present invention.

[0025] Figure 8 is a schematic view of the wheel in the locked state according to an embodiment of the present invention.

[0026] Figure 9 is a schematic view of the connection between a high-stability braking mechanism for a baby stroller and a partial structure of the baby stroller according to an embodiment of the present invention.

[0027] Reference numerals:

[0028] High-stability braking mechanism 100 for a baby stroller,

[0029] Fixing member 10, load-bearing stop block 11, limiting block 12,

[0030] Wheel 20, hub 21, axle 211, braking cooperation part 22, clamping plate 221, clamping groove 222, end block 223, guiding surface 2331,

[0031] Foot pedal member 30, braking active part 31, brake block 311, head end 3111, tail end 3112, reinforcing rib 312, limiting groove 32, stroke limiting groove 33, limiting hole 331, pressing piece 332, pedal 34, side plate 35,

[0032] Connecting shaft 40. Detailed implementation manners

[0033] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only for explaining the present invention and should not be construed as limiting the present invention.

[0034] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "width", "thickness", "upper", "lower", "top", "bottom", "inner", "outer", "axial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0036] Next, reference will be made to Figures 1-9 Describe the high-stability braking mechanism 100 for a baby stroller according to an embodiment of the present invention.

[0037] As shown in Figures 1-4As shown, the high-stability braking mechanism 100 for a baby stroller according to an embodiment of the present invention is suitable for being configured on the wheels 20 of a baby stroller to achieve braking. The high-stability braking mechanism 100 for a baby stroller includes: a fixing member 10, a braking cooperation portion 22, and a foot pedal member 30. The fixing member 10 is provided with a bearing stop block 11. The fixing member 10 is fixedly connected to the rear foot of the baby stroller and rotatably connected to the hub 21 of the wheel 20. At least a part of the braking cooperation portion 22 is located on the side of the hub 21 facing the fixing member 10. The foot pedal member 30 is rotatably connected to the fixing member 10, and the rotation axis of the foot pedal member 30 deviates from the rotation axis of the wheel 20, that is, the rotation axis of the foot 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 foot pedal member 30 can rotate between an upper stop position and a lower stop position. A braking active portion 31 is provided on the side of the foot pedal member 30 facing the wheel 20, and the foot pedal member 30 is provided with a limiting groove 32 with an opening downward. When the foot pedal member 30 rotates to the lower stop position, the bearing stop block 11 abuts against the top wall of the limiting groove 32, and the braking active portion 31 is inserted into the braking cooperation portion 22 to restrict the rotation of the wheel 20. When the foot pedal member 30 rotates to the upper stop position, the braking active portion 31 withdraws from the braking cooperation portion 22 to release the restriction on the wheel 20. The foot pedal member 30 has a pedal 34, and the pedal 34 is located on the side of the braking active portion 31 away from the rotation axis of the foot pedal member 30.

[0038] This high-stability braking mechanism 100 for a baby stroller is usually installed on the frame of the baby stroller. When pushing the baby stroller, the frame drives the fixing member 10 to move. Since the wheel 20 is in contact with the ground, the fixing member 10 drives the wheel 20 to roll when walking. In some other solutions, the baby stroller has a power system, for example, a motor is connected to the wheel 20 to drive the wheel 20 to roll.

[0039] When the baby stroller needs to stop at a certain position, the user can step on the foot pedal member 30 to make the foot pedal member 30 rotate relative to the fixing member 10. As Figure 5 and Figure 6 shown, the foot pedal member 30 can rotate from the upper stop position towards the lower stop position. When the foot pedal member 30 is in the lower stop position, it can prevent the wheel 20 from rolling and achieve braking. When locking the car is not required, the user can use the foot or a tool to lift the foot pedal member 30 upward to make the foot pedal member 30 rotate from the lower stop position towards the upper stop position, unlock the wheel 20, and make the wheel 20 resume free rotation.

[0040] Among them, since the wheel 20 is provided with a brake mating part 22 on the wheel hub 21, and the pedal part 30 is provided with a brake active part 31 on the side facing the wheel 20, when the pedal part 30 rotates from the upper dead center to the lower dead center, the brake active part 31 on the pedal part 30 approaches the brake mating part 22 on the wheel 20 until the two come into contact and lock, realizing the locking of the wheel 20. When the pedal part 30 rotates from the lower dead center to the lower dead center, the brake active part 31 on the pedal part 30 gradually moves away from the brake mating part 22 on the wheel 20, separating the two to unlock, realizing the unlocking of the wheel 20.

[0041] Here, at least a part of the brake mating part 22 is located on the side of the wheel hub 21 facing the fixing part 10, the brake active part 31 is located on the side of the pedal part 30 facing the wheel 20, and both the brake mating part 22 and the brake active part 31 are visible from the outside. Therefore, when the cooperation between the two is not in place, or there are foreign objects, abnormal noises, etc., it is convenient to observe and eliminate.

[0042] The bearing stop block 11 on the fixing part 10 can cooperate with the limit groove 32 on the pedal part 30. When the pedal part 30 is in the lower dead center, the bearing stop block 11 can stop in the limit groove 32 to limit the pedal part 30 in the lower dead center.

[0043] It can be understood that when the wheel 20 needs to be locked, the pedal part 30 is stepped on to rotate the pedal part 30 from the upper dead center to the lower dead center. Since it is operated by stepping on the foot, the control of the force is not precise. If the force is too large, it is easy to cause the pedal part 30 to rotate excessively and damage the high-stability braking mechanism 100 of the baby stroller. By setting the cooperation between the bearing stop block 11 and the limit groove 32, when the pedal part 30 reaches the lower dead center, the bearing stop block 11 can abut against the top wall of the limit groove 32 to prevent the pedal part 30 from rotating excessively, thereby increasing the stability of the high-stability braking mechanism 100 of the baby stroller.

[0044] When the baby stroller needs to release the brake, the pedal part 30 is lifted, and the brake active part 31 is separated from the brake mating part 22, so that the wheel 20 resumes free rotation. At this time, the bearing stop block 11 is separated from the limit groove 32. Thus, while enabling the baby stroller to perform stable braking, the structure of the high-stability braking mechanism 100 of the baby stroller can be simplified, and the reliability can be improved.

[0045] It should be noted that the shape of the load-bearing stop block 11 is not specifically limited here, and the shape of the limiting groove 32 is also not specifically limited, and can be selected according to actual needs. For example, the shape of the load-bearing stop block 11 can be a polygon. Correspondingly, the top wall of the limiting groove 32 is a polygon that can cooperate with the load-bearing stop block 11. In this way, the outer edge of the load-bearing stop block 11 is in complete contact with the top wall of the limiting groove 32, and the polygonal mating shape can make the load-bearing stop block 11 and the limiting groove 32 contact more closely, preventing sliding between the fixing member 10 and the footrest member 30, thereby improving the stability when the high-stability braking mechanism 100 of the baby stroller is locked.

[0046] Of course, the shape of the load-bearing stop block 11 can also be circular. Correspondingly, the top wall of the limiting groove 32 is an arc that can cooperate with the load-bearing stop block 11. In this way, through the cooperation of the arc shape, the fault tolerance during locking can be increased. When there is a slight deviation in the positions of the load-bearing stop block 11 and the limiting groove 32, the arc-shaped contact surface can play a role in correcting the deviation, so that the load-bearing stop block 11 and the limiting groove 32 are more stably fitted together.

[0047] As Figure 1 shown, in some embodiments, the fixing member 10 is rotatably connected to the axle 211 of the wheel hub 21. The brake engaging 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 axle 211, and a clamping groove 222 is defined between two adjacent clamping plates 221. When the footrest member 30 is in the lower limit position, the brake active portion 31 is inserted into at least one clamping groove 222. By inserting the brake active portion 31 into the clamping groove 222, the wheels 20 of the baby stroller are locked, and the braking effect is better when the brake active portion 31 is inserted into the clamping groove 222 and it is not easy to disengage. In this way, the stability of the baby stroller braking can be better, thereby improving safety.

[0048] Moreover, the brake active portion 31 can be selected to be inserted into one of the plurality of clamping grooves 222. In this way, when the wheel 20 rotates to any angle, the brake active portion 31 can be inserted into the clamping groove 222 for braking. As Figure 1 shown, there are 8 clamping grooves 222, and the wheel 20 can be braked when it rotates to any angle.

[0049] In Figure 4 and Figure 5In the example, only one braking active part 31 is provided on one pedal 34. In some solutions, there may be multiple braking active parts 31. When the pedal 34 is in the lower dead center position, multiple braking active parts 31 are inserted into multiple card slots 222. In this way, the cooperation between the multiple card slots 222 and the multiple braking active parts 31 can increase the reliability of the high-stability braking mechanism 100 of the stroller. When one of the clamping plates 221 fails and breaks, the remaining braking active parts 31 can still ensure the locking of the wheels 20 of the stroller, improving safety.

[0050] In some embodiments, as Figure 1 shown, the wheel axle 211 is rotatably connected to the load-bearing stop block 11. In this way, the load-bearing stop block 11 can serve two purposes. It can both support the rotation of the wheel 20 and support the pedal member 30 during braking to prevent the pedal member 30 from swinging too much downward. Therefore, this structure can improve the compactness of the mechanism.

[0051] Specifically, through the connection between the wheel axle 211 and the load-bearing stop block 11, the wheel 20 can be locked. Since the load-bearing stop block 11 is formed on the fixing member 10 and the pedal member 30 is also connected to the fixing member 10, the components of the high-stability braking mechanism 100 of the stroller are connected together, increasing the stability of the high-stability braking mechanism 100 of the stroller.

[0052] Optionally, as Figure 1 shown, a connecting shaft 40 is provided between the wheel axle 211 and the load-bearing stop block 11, and the wheel axle 211 is rotatably connected to the load-bearing stop block 11 through the connecting shaft 40. By providing the connecting shaft 40 between the wheel axle 211 and the load-bearing stop block 11, the stability and rigidity of the rotation of the wheel 20 can be increased, thereby increasing the service life of the stroller.

[0053] As Figure 2 shown, optionally, the load-bearing stop block 11 is circular, the limiting groove 32 is U-shaped with an opening downward, and the limiting opening is located at the bottom of the limiting groove 32. The circular load-bearing stop block 11 can form a surface fit with the top of the U-shaped limiting groove 32, avoiding large concentrated stress when the two come into contact, making the pedal member 30 more stably abutted against the fixing member 10 and preventing the pedal member 30 from sliding out of the fixing member 10, thereby increasing the stability of the braking of the stroller.

[0054] As Figure 3As shown, further, the brake mating portion 22 includes an end block 223. The end block 233 is provided at one end of the clamping plate 221 away from the wheel axle 211. At least one side of the end block 223 is provided with a guiding surface 2331, and the guiding surface 2331 inclines away from the clamping plate 221 where it is located along the direction towards the wheel axle 211. In this way, on the cross-section perpendicular to the axis of the wheel axle 211, the guiding surface 2331 at the end forms an inclined surface or an arc surface in the direction away from the clamping plate 221 where it is located. When the foot pedal 34 rotates from the top dead center to the bottom dead center, it is possible that the brake active portion 31 abuts against the top surface of the clamping plate 221. In this case, the brake active portion 31 cannot be smoothly inserted into the card slot 222, resulting in the inability to lock the wheel 20. By providing the guiding surface 2331 on the end block 223, when the brake active portion 31 abuts against the top surface of the clamping plate 221, it can be smoothly inserted into the card slot 222 through the guiding surface 2331. Thus, the possibility of breakage when the brake active portion collides with the brake mating portion can be reduced, and the stability of the high-stability brake mechanism 100 of the baby stroller during braking can be increased.

[0055] Furthermore, both sides of the end block 223 have guiding surfaces 2331. By providing the guiding surfaces 2331 on both sides, the probability of the brake active portion 31 being inserted into the card slot 222 can be increased, further enhancing the stability. Specifically, in this embodiment, the end block 223 at the end of the clamping plate 221 forms an equilateral triangle structure. In this way, no matter which side (front or back) of the clamping plate 221 the brake active portion 31 is inserted into, it can be guided by the guiding surface 2331 of the end block 223 and smoothly enter the card slot 222.

[0056] It should be noted that the cross-sectional shape of the end block 223 in the plane perpendicular to the axis of the wheel axle 211 is not specifically limited here. The cross-section of the end block 223 can include a triangle or a semi-circle. When the cross-section of the end block 223 is semi-circular, the outer surface of the end block 223 forms a smooth arc surface. When the brake active portion 31 is inserted into the card slot 222, the arc surface will not cause jamming to the brake active portion 31, thereby increasing the stability of the high-stability brake mechanism 100 of the baby stroller.

[0057] Such as Figure 4As shown, in some embodiments, the braking active part 31 includes a brake block 311, and the brake block 311 is used to insert into the braking cooperation part 22 to achieve braking; the brake block 311 extends along the circumferential direction of the rotation axis of the pedal part 30. One end of the brake block 311 close to the axis of the wheel 20 is the head end 3111, and one end of the brake block 311 away from the axis of the wheel 20 is the tail end 3112. The radial width of the brake block 311 gradually increases from the head end 3111 to the tail end 3112. During the process of driving the pedal part 30 to rotate by an external force, the brake block 311 is driven to insert into and withdraw from the braking cooperation part 22, enabling the baby stroller to achieve braking and unlocking. The brake block 311 extends in an arc shape along the circumferential direction of the rotation axis of the pedal part 30. One end of the brake block 311 close to the axis of the wheel 20 is the head end 3111, and one end of the brake block 311 away from the axis of the wheel 20 is the tail end 3112. During the process of stepping on the pedal part 30 by an external force, the brake block 311 gradually snaps into the braking cooperation part 22 from the head end 3111 to the tail end 3112 to achieve braking. The radial width of the brake block 311 gradually increases from the head end 3111 to the tail end 3112, forming an inclined surface that gradually moves away from the arc center line of the brake block 311 in the direction from the head end 3111 to the tail end 3112 of the brake block 311. When the braking active part 31 inserts into the braking cooperation part 22, the inclined surface formed on the brake block 311 corresponds to the inclined surface on the end block 223, which can play a guiding role and enable the braking active part 31 to be inserted into the card slot 222 more smoothly. Moreover, the head end 3111 of the brake block 311 is pointed and the tail end 3112 is wide, making it easy to insert but difficult to disengage, thereby reducing the probability of braking failure and the possibility of the brake block 311 disengaging from the braking cooperation part 22 by itself, thus improving the stability of braking.

[0058] It can be understood that the shape of the brake block 311 can also be semi-circular. When the cross-sectional shape of the end block 223 of the clamping plate 221 is semi-circular, the arc surface of the brake block 311 can slide with the arc surface of the end block 223, enabling the braking active part 31 to be inserted into the card slot 222 smoothly.

[0059] Furthermore, the braking active part 31 includes a reinforcing rib 312, and the reinforcing rib 312 is connected to the tail end 3112 of the brake block 311. The reinforcing rib 312 is connected to the tail part. Both the brake block 311 and the reinforcing rib 312 are fixedly connected to the fixing part 10. In this way, the reinforcing rib 312 and the brake block 311 form an integral body on the fixing part 10, which can improve the structural strength of the braking active part 31, thereby increasing the stability of braking.

[0060] Among them, the reinforcing rib 312 is connected to the tail end 3112 of the brake block 311. When the brake active part 31 is inserted into the card slot 222, the brake block 311 will be inserted into the card slot 222 between the card plates 221, and the reinforcing rib 312 will contact the tail end 3112 to achieve support. In this way, the reinforcing rib 312 can provide certain support when the children's stroller brakes, reducing the probability of fracture.

[0061] As Figure 4 shown, in some embodiments, one of the fixing member 10 and the foot pedal member 30 is provided with a stroke limiting groove 33, and the other of the fixing member 10 and the foot pedal member 30 is correspondingly provided with a limiting block 12. During the process of the foot pedal member 30 rotating between the upper dead center and the lower dead center, the limiting block 12 moves within the stroke limiting groove 33, and when the foot pedal member 30 rotates to the upper dead center or the lower dead center, the limiting block 12 moves to the corresponding end of the stroke limiting groove 33 to achieve the limitation of the foot pedal member 30. Through the cooperation of the stroke limiting groove 33 and the limiting block 12, the rotation amplitude of the foot pedal member 30 during rotation can be limited, enabling it to move between the upper dead center and the lower dead center, improving the operability of the pedal 34, and enhancing the user experience.

[0062] It can be understood that the stroke limiting groove 33 can be provided on the fixing member 10 and the limiting block 12 can be provided on the foot pedal member 30, or the limiting block 12 can be provided on the fixing member 10 and the stroke limiting groove 33 can be provided on the foot pedal member 30. Here, the structure of the stroke limiting groove 33 is not specifically limited as long as the limitation of the foot pedal member 30 can be achieved. Similarly, the shape of the limiting block 12 is not specifically limited here. The shape of the limiting block 12 can be a semi-circular protrusion formed on the fixing member 10 or the foot pedal member 30, or a cylindrical protrusion. It can be selected according to actual usage needs.

[0063] Furthermore, the stroke limiting groove 33 includes limiting holes 331 at both ends and a connecting portion located between the two limiting holes 331. Pressing pieces 332 are respectively protruded inward from the two side walls of the connecting portion, and there is a gap between the two pressing pieces 332. When the foot pedal member 30 rotates to the upper dead center, the limiting block 12 abuts against the limiting hole 331 at the lower end of the stroke limiting groove 33. Under the action of gravity, the foot pedal member 30 has a tendency to move downward, that is, the limiting block 12 has a tendency to move upward relative to the stroke limiting groove 33 to the upper end limiting hole 331. At this time, the pressing pieces 332 provided between the two limiting holes 331 can block the limiting block 12, thereby realizing the fixation of the foot pedal member 30 at the upper dead center.

[0064] Among them, a pressing piece 332 is connected to the inner wall on one side of the stroke limiting groove 33 and not connected to the other side. The pressing piece 332 has a certain elasticity. In this way, during the process of stepping on the foot pedal 30 from the upper dead center to the lower dead center, the pressing piece 332 will deform under the action of pressure, and the limiting block 12 can move from the upper limiting hole 331 to the lower limiting hole 331. The brake active part 31 follows the rotation of the foot pedal 30 and inserts into the clamping groove 222 to realize the braking of the baby stroller. After the limiting block 12 moves from the upper limiting hole 331 to the lower limiting hole 331, the pressing piece 332 restores its shape according to its own elasticity.

[0065] Moreover, the deformation and restoration of the pressing piece 332 can provide a sense of paragraph, enabling the user to know the position of the foot pedal 30 after operating the foot pedal 30, thereby enhancing the user experience.

[0066] Furthermore, the thickness of the pressing piece 332 gradually decreases along the direction of inward protrusion. There is a gap between the two pressing pieces 332 on both sides, which enables the limiting block 12 to pass through smoothly. Pressing pieces 332 are arranged on both side walls of the stroke limiting groove 33, which can make the supporting effect of the pressing piece 332 on the limiting block 12 better. The change in the thickness of the pressing piece 332 can reduce the effort required to step on and lift the foot pedal 30. Moreover, after the pressing piece 332 is thinned, its elasticity increases and it is not easy to break.

[0067] It should be noted that the material of the pressing piece 332 is not specifically limited here. The pressing piece 332 can include a plastic part or a metal elastic piece, which can be selected according to actual needs.

[0068] In some embodiments, the foot pedal 30 includes: a pedal 34 and two side plates 35. The two side plates 35 are connected to opposite sides of the pedal 34, and the two side plates 35 are respectively connected to opposite sides of the fixing member 10. The user can operate the pedal 34 to switch the foot pedal 30 between the upper dead center and the lower dead center. A receiving space can be formed between the two side plates 35 and the pedal 34 to receive the fixing member 10. When the foot pedal 30 switches between the upper dead center and the lower dead center, the edge of the connection between the pedal 34 and the side plate 35 can abut against the outer surface of the fixing member 10. Through the contact between the foot pedal 30 and the fixing member 10, the rotation angle of the foot pedal 30 can be restricted, thereby enhancing the stability of the high-stability braking mechanism 100 of the baby stroller.

[0069] Furthermore, a rotating shaft is formed at the connection between the two side plates 35 and the fixing member 10, and the rotating shaft is rotatably connected to the fixing member 10. Through the rotating shaft, the foot pedal 30 can rotate between the upper dead center and the lower dead center, thereby realizing the braking and unlocking of the baby stroller.

[0070] Specifically, the pedal 34 is located on the side of the brake active part 31 away from the rotation axis of the foot pedal 30. That is to say, in terms of the distance from the rotation axis of the foot pedal 30, the pedal 34 is farther than the brake active part 31. According to the lever principle, when the pedal 34 is stepped on, a force greater than the stepping force can be generated and applied to the brake active part 31, thereby reducing the effort required to step on the brake with the foot.

[0071] The following will Figures 1-4 describe in detail the working process of the high-stability brake mechanism 100 of a baby stroller according to an embodiment of the present invention:

[0072] When the baby stroller needs to stop at a certain position, the user can step on the foot pedal 30 with the foot. The pressing piece 332 on the stroke limiting groove 33 deforms under the action of an external force, causing the limiting block 12 to disengage from the upper limiting hole 331, and the foot pedal 30 rotates relative to the fixed part 10. The foot pedal 30 can rotate from the upper dead center towards the lower dead center, and the brake block 311 on the brake active part 30 gradually engages into the brake mating part 22 from the head end 3111 to the tail end 3112 to achieve braking. When the foot pedal 30 enters the lower dead center, the limiting block 12 moves from the upper limiting hole 331 to the lower limiting hole 331, the pressing piece 332 restores its shape according to its own elasticity, and the force-bearing stop block 11 stops in the limiting groove 32 to limit the foot pedal 30 when it is in the lower dead center.

[0073] When the baby stroller needs to release the brake, lift the foot pedal 30. The pressing piece 332 on the stroke limiting groove 33 deforms under the action of an external force, causing the limiting block 12 to disengage from the lower limiting hole 331, and the foot pedal 30 rotates relative to the fixed part 10. The foot pedal 30 can rotate from the lower dead center towards the upper dead center, and the brake block 311 on the brake active part 31 gradually disengages from the brake mating part 22, allowing the wheel 20 to resume free rotation. When the foot pedal 30 enters the upper dead center, the limiting block 12 moves from the lower limiting hole 331 to the upper limiting hole 331, and the pressing piece 332 restores its shape according to its own elasticity, restricting the limiting block 12 in the upper limiting hole 331, thereby preventing the foot pedal 30 from rotating under its own gravity to achieve the fixation of the foot pedal 30 in the upper dead center.

[0074] Other components of the high-stability brake mechanism 100 of the baby stroller according to the embodiment of the present invention, such as bearings and tires, etc., and the operations are known to those of ordinary skill in the art and will not be described in detail here.

[0075] In the description of this specification, the descriptions referring to terms such as "embodiment", "example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0076] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A high-stability braking mechanism (100) for a baby stroller, which is suitable for being configured on the wheels (20) of the baby stroller to achieve braking, and is characterized in that, Comprising: A fixing member (10), the fixing member (10) is provided with a load-bearing stop block (11), and the fixing member (10) is fixedly connected to the rear foot of the stroller and rotatably connected to the hub (21) of the wheel (20); A braking cooperation part (22) arranged on the wheel (20), at least part of the braking cooperation part (22) is located on the side of the hub (21) facing the fixing member (10); A foot pedal member (30), the foot pedal member (30) is rotatably connected to the fixing member (10), and the rotation axis of the foot pedal member (30) deviates from the rotation axis of the wheel; the foot pedal member (30) can rotate between an upper stop position and a lower stop position, a braking active part (31) is arranged on the side of the foot pedal member (30) facing the wheel (20), and the foot pedal member (30) is provided with a limiting groove (32) with an opening facing downwards; When the foot pedal member (30) rotates to the lower stop position, the load-bearing stop block (11) abuts against the top wall of the limiting groove (32), and the braking active part (31) is inserted into the braking cooperation part (22) to limit the rotation of the wheel (20); When the foot pedal member (30) rotates to the upper stop position, the braking active part (31) withdraws from the braking cooperation part (22) to release the restriction on the wheel (20); The braking active part (31) includes a brake block (311), and the brake block (311) is used for being inserted into the braking cooperation part (22) to achieve braking; one end of the brake block (311) close to the axis of the wheel (20) is the head end (3111), and one end of the brake block (311) far from the axis of the wheel (20) is the tail end (3112), and the radial width of the brake block (311) gradually increases from the head end (3111) to the tail end (3112).

2. The high-stability braking mechanism (100) for a baby stroller according to claim 1, characterized in that, The fixing member (10) is rotatably connected to the axle (211) located on the hub (21), the braking cooperation part (22) includes a plurality of clamping plates (221), the plurality of clamping plates (221) are arranged at intervals in the circumferential direction of the axle (211) of the hub (21), and a clamping groove (222) is defined between two adjacent clamping plates (221), and when the foot pedal member (30) is in the lower stop position, the braking active part (31) is inserted into at least one of the clamping grooves (222).

3. The high-stability braking mechanism (100) for a baby stroller according to claim 2, wherein, The axle (211) is rotatably connected to the load-bearing stop block (11).

4. The high-stability braking mechanism (100) for a baby stroller according to claim 2, characterized in that, The load-bearing stop block (11) is circular, and the limiting groove (32) is U-shaped with an opening facing downwards.

5. The high-stability braking mechanism (100) for a baby stroller according to claim 2, characterized in that, The braking cooperation part (22) includes an end block (223), the end block (223) is arranged at one end of the clamping plate (221) far from the axle (211), and at least one side of the end block (223) is provided with a guiding surface (2331), and the guiding surface (2331) inclines towards the side far from the clamping plate (221) along the direction towards the axle (211).

6. The high-stability braking mechanism (100) for a baby stroller according to claim 1, characterized in that, The brake block (311) extends along the circumferential direction of the rotation axis of the foot pedal member (30).

7. The high-stability braking mechanism (100) for a baby stroller according to claim 6, characterized in that, The brake active part (31) further includes 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 the circumferential direction of the rotation axis of the pedal member (30).

8. The high-stability braking mechanism (100) for a baby stroller according to claim 1, characterized in that, One of the fixing member (10) and the pedal member (30) is provided with a stroke limiting groove (33), and the other of the fixing member (10) and the pedal member (30) is correspondingly provided with a limiting block (12). During the rotation of the pedal member (30) between the upper dead center and the lower dead center, the limiting block (12) moves within the limiting groove (33), and when the pedal member (30) rotates to the upper dead center or the lower dead center, the limiting block (12) moves to the corresponding end of the stroke limiting groove (33) to limit the pedal member (30).

9. The high-stability braking mechanism (100) for a baby stroller according to claim 8, wherein The stroke limiting groove (33) includes limiting holes (331) at both ends and a connecting portion located between the two limiting holes (331). Pressing pieces (332) are respectively formed by inward protrusion of the two side walls of the connecting portion, and there is a gap between the two pressing pieces (332).

10. The high-stability braking mechanism (100) for a baby stroller according to claim 9, characterized in that, The thickness of the pressing piece (332) gradually decreases along the direction of inward protrusion.

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