Brake mechanism and baby carrier

Abstract

Provision of braking mechanism. [Solution] The brake mechanism (22) includes a hub (100), a fixed base (200), a retainer (500), and a pedal assembly (400). The hub (100) is provided with a first engagement portion (101). The fixed base is fixed to the hub (100) and includes a second engagement portion (102) that is capable of engaging with and locking with the first engagement portion (101). When the retainer (500) is in a first position, the second engagement portion (102) is kept in a disengaged state with the first engagement portion (101), and when the retainer is in a second position, the second engagement portion (102) is kept in an engaged state with the first engagement portion (101) and is locked with the first engagement portion (101). When a force along a first direction is applied to the pedal assembly (400), the retainer (500) moves from the first position to the second position or from the second position to the first position.

Description

[Technical field]

[0001] The present disclosure relates to the field of baby products, and in particular to braking mechanisms and baby carriers. [Background technology]

[0002] In most baby carriers, such as general strollers, the brake pedal of the braking mechanism is required to reciprocate in order to brake or unlock the stroller. For example, the stroller is braked when the brake pedal is depressed, and the brake pedal must be hooked with the foot to unlock the stroller. Summary of the Invention [Problem to be solved by the invention]

[0003] This makes the operation very inconvenient and may damage the user's shoes. [Means for solving the problem]

[0004] According to one aspect of the present disclosure, a brake mechanism is provided. The brake mechanism includes a hub, a fixed base, a retainer, a pedal assembly, and a first reset member. The hub is provided with a first engagement portion. The fixed base is fixed to the hub and includes a second engagement portion that is lockable by engaging with the first engagement portion. The retainer has a first position and a second position. When the retainer is in the first position, the second engagement portion is held in a state disengaged from the first engagement portion, and when the retainer is in the second position, the second engagement portion is held in a state engaged with the first engagement portion and locked with the first engagement portion. When the retainer is in the first position and a force along a first direction is applied to the pedal assembly, the retainer moves from the first position to the second position, and when the retainer is in the second position and a force along the first direction is applied to the pedal assembly, the retainer moves from the second position to the first position. The first reset member constantly causes the pedal assembly to move in a direction opposite to the first direction.

[0005] In one embodiment, the pedal assembly includes a pedal body and a drive ramp connected to each other, and when the retainer is in a first position and a force along a first direction is applied to the pedal body, the drive ramp moves along the first direction to drive a second engagement portion to engage and lock with the first engagement portion.

[0006] In one embodiment, the retainer is movably disposed on the fixed base, the movement direction of the retainer intersects with the movement direction of the second engagement portion, and when the retainer is in the second position, the retainer acts on the second engagement portion to move the second engagement portion in a direction closer to the first engagement portion.

[0007] In one embodiment, the brake mechanism further includes a second reset member that continues to move the retainer toward the second position.

[0008] In one embodiment, the pedal assembly includes a pedal body and a first abutting portion connected to each other, and the retainer has a second abutting structure, the first abutting portion abutting against the second abutting structure when the retainer is in the second position.

[0009] In one embodiment, the pedal assembly further includes a rotating frame coupled to the pedal body, the rotating frame rotatably disposed on the fixed base, the first abutment portion disposed on the rotating frame, and the rotating frame further includes a drive ramp spaced apart from the first abutment portion, wherein when the retainer is in the first position and a force along the first direction is applied to the pedal body, the drive ramp moves along the first direction to drive the second engagement portion to engage and lock with the first engagement portion.

[0010] In one embodiment, the first engagement portion is a brake hole disposed in the hub, and the second engagement portion is a brake pin movably disposed in the fixed base. The brake pin is insertable into the brake hole.

[0011] In one embodiment, the brake mechanism further includes a drive member disposed on an end of the brake pin remote from the brake aperture, the retainer abutting an end of the drive member remote from the brake aperture when the retainer is in the second position.

[0012] In one embodiment, the brake mechanism further includes a third reset member disposed around the brake pin, the third reset member having opposite ends that abut against the fixed base and the drive member, respectively.

[0013] In one embodiment, the brake pin includes a guide post and the drive member includes a guide groove, the guide post being inserted into the guide groove and being slidable along the guide groove.

[0014] In one embodiment, the brake mechanism further includes a fourth reset member, the drive member having an accommodating groove, the brake pin being movably disposed within the accommodating groove, and the two ends of the fourth reset member abutting against the brake pin and a bottom of the accommodating groove, respectively.

[0015] In one embodiment, the brake mechanism further includes an indicating assembly adapted to be in a first indicating state when the retainer is in the first position and in a second indicating state when the retainer is in the second position.

[0016] In one embodiment, the brake mechanism further includes a decorative cover covering the fixed base, and the indication assembly includes a display window disposed on the decorative cover and an indicator secured to the retainer. The indicator has a first indication area and a second indication area. The first indication area is aligned with the display window when the retainer is in the first position, and the second indication area is aligned with the display window when the retainer is in the second position.

[0017] According to another aspect of the present disclosure, there is provided a baby carrier including a wheel assembly including the braking mechanism described above.

[0018] In one embodiment, the baby carrier further includes a link member, and two wheel assemblies are provided, each of the two wheel assemblies is provided with a brake mechanism, and two ends of the link member are respectively connected to the pedal assemblies of the two wheel assemblies. [Brief description of the drawings]

[0019] [Figure 1] FIG. 1 is a schematic structural diagram showing a baby carrier according to one embodiment of the present disclosure. [Diagram 2] FIG. 2 is a schematic structural diagram showing the baby carrier shown in FIG. 1 from another angle. [Diagram 3] FIG. 3 is an enlarged view of portion A of FIG. 2, ie, an enlarged view of the right rear wheel assembly of the baby carrier. [Figure 4] FIG. 4 is a schematic diagram showing a part of the structure of FIG. [Diagram 5] FIG. 5 is a schematic diagram showing the structure of another portion of FIG. [Figure 6] FIG. 6 is a schematic structural diagram of FIG. 4 when the decorative cover is omitted, in which the retainer is in a first position, the wheel assembly is in an unlocked state, and the pedal assembly is in an unpressed state. [Figure 7] FIG. 7 is an enlarged view of part B in FIG. [Figure 8] FIG. 8 is another schematic structural view of FIG. 4 when the decorative cover is omitted, in which the retainer is in the second position, the wheel assembly is in the locked state, and the pedal assembly is in the depressed state. [Figure 9] FIG. 9 is a schematic structural diagram showing FIG. 8 from a different perspective. [Figure 10] FIG. 10 is another schematic structural view of FIG. 4 when the decorative cover is omitted, in which the retainer is in a second position, the wheel assembly is in a locked state, and the pedal assembly is in an unpressed state. [Figure 11] FIG. 11 is a partial cross-sectional view of FIG. [Figure 12]FIG. 12 is a schematic structural diagram showing the fixed base in FIG. [Figure 13] FIG. 13 is a schematic structural diagram showing the locking assembly of FIG. [Figure 14] 14 is a cross-sectional view of the locking assembly of FIG. [Figure 15] FIG. 15 is a schematic structural diagram showing the pedal assembly of FIG. [Figure 16] FIG. 16 is a schematic structural view showing the pedal assembly shown in FIG. 15 from another perspective. [Figure 17] FIG. 17 is a schematic structural view showing the retainer of FIG. [Figure 18] FIG. 18 is a schematic structural diagram showing the decorative cover of FIG. [Figure 19] FIG. 19 is a schematic structural diagram of FIG. 4 when the decorative cover and the fixed base are omitted, in which the pedal is in the middle position and the driving member abuts against the driving inclined surface. [Figure 20] FIG. 20 is another schematic structural diagram of FIG. 4 when the decorative cover and the fixed base are omitted, in which the pedal is in the depressed position and the drive member is in contact with the second surface. [Figure 21] FIG. 21 is a schematic structural diagram seen from another angle of FIG. [Figure 22] FIG. 22 is another schematic structural diagram of FIG. 4 when the decorative cover and the fixed base are omitted, in which the pedal is in the initial position and the end of the driving member away from the brake hole is pressed by the retainer and faces the first surface. [Figure 23] FIG. 23 is a schematic structural diagram of FIG. 4 with the decorative cover omitted, in which the pedal is in the initial position, the retainer is in the first position, the right rear wheel assembly is in the unlocked state, and the pedal assembly is in an unpressed state. [Figure 24] FIG. 24 is a schematic structural diagram of FIG. 23 from another perspective. [Diagram 25]FIG. 25 is a schematic structural diagram of FIG. 4 when the decorative cover is omitted, in which the pedal is in the middle position and the drive member abuts against the drive inclined surface. [Figure 26] FIG. 26 is another schematic structural view of FIG. 4 with the decorative cover omitted, in which the pedal is in the depressed position, the retainer is in the second position, and the right rear wheel assembly is in the locked state. [Figure 27] FIG. 27 is a schematic structural diagram of FIG. 26 from another perspective. [Figure 28] FIG. 28 is another schematic structural diagram of FIG. 4 with the decorative cover omitted, in which the pedal is in the initial position, the retainer is in the second position, and the right rear wheel assembly is in a locked state. [Figure 29] FIG. 29 is a schematic structural diagram showing a brake mechanism of the right rear wheel assembly of the baby carrier shown in FIG. [Diagram 30] Figure 30 is a schematic diagram showing the brake connection principle of the left rear wheel assembly and the right rear wheel assembly of the baby carrier shown in Figure 3, in which the pedal is in the initial position, the retainers of the left rear wheel assembly and the right rear wheel assembly are both in the first position, and the left rear wheel assembly and the right rear wheel assembly are both in the unlocked state. [Diagram 31] FIG. 31 is a schematic structural diagram showing FIG. 30 from a different perspective. [Diagram 32] Figure 32 is a schematic diagram for explaining the brake connection principle of the left rear wheel assembly and the right rear wheel assembly of the baby carrier shown in Figure 3, in which the pedal is in the depressed position, the retainer is in the second position, and both the left rear wheel assembly and the right rear wheel assembly are in a locked state. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] In order to make the objectives, technical solutions and advantages of the present disclosure clearer, the present disclosure will be described in more detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to interpret the present disclosure, and do not limit the protection scope of the present disclosure.

[0021] It should be noted that when a component is said to be "fixed" to another component, the component may be directly disposed on the other component, or intermediate components may be present. When a component is said to be "connected" to another component, it may be directly connected to the other component, or intermediate components may coexist. As used herein, the terms "vertical," "horizontal," "left," "right," and similar expressions are for illustrative purposes only and do not imply unique implementations.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art of the present disclosure. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0023] As shown in Fig. 1, an embodiment of the present disclosure provides a baby carrier, for example, a stroller, which requires only stepping on the brake pedal to brake or unlock the baby carrier, making the operation simple and eliminating the risk of damaging the user's shoes.

[0024] As shown in FIG. 1 and FIG. 2, the baby carrier includes a frame 10, a plurality of wheel assemblies 20 arranged under the frame 10, and a connecting member 30. In this embodiment, the baby carrier includes four wheel assemblies 20, including a left front wheel assembly 20, a right front wheel assembly 20, a left rear wheel assembly 20, and a right rear wheel assembly 20. The left rear wheel assembly 20 and the right rear wheel assembly 20 each include a wheel body 21 and a brake mechanism 22. Both ends of the connecting member 30 are respectively connected to the brake mechanisms 22 of the left rear wheel assembly 20 and the right rear wheel assembly 20, and connect the two brake mechanisms 22 to be in a braking state or an unlocked state simultaneously. In this embodiment, the connecting member 30 is a steel wire. Of course, in other embodiments, the connecting member 30 can have other connecting structures.

[0025] Of course, in other embodiments, there may be more than four wheel assemblies 20 or less than four wheel assemblies according to actual requirements. The brake mechanism 22 may also be disposed on the left front wheel assembly 20 or the right front wheel assembly 20 as required.

[0026] The brake mechanism 22 will be specifically described using the right rear wheel assembly 20 as an example.

[0027] As shown in Figures 3, 6 to 8, and 11, the brake mechanism 22 includes a hub 100, a fixed base 200, a locking assembly 300, a pedal assembly 400, a retainer 500, a first reset member 610, a second reset member 620, a decorative cover 700, and a display assembly 800.

[0028] Furthermore, as shown in FIG. 5, the wheel body 21 is arranged around the hub 100, and a plurality of brake holes 110 are arranged evenly in the circumferential direction at approximately the center of the hub 100, and a pivot shaft 120 is arranged at the center of the wheel hub 100. In another embodiment, the hub 100 is provided with one brake hole 110. As shown in FIGS. 3, 6 and 12, the fixed base 200 is substantially cylindrical, and the fixed base 200 is connected to the lower end of the frame 10 via a connector 900. In this embodiment, the fixed base 200 and the connector 900 are integrally formed. Of course, in other embodiments, the fixed base 200 and the connector 900 may be two separate parts. A pivot hole 210 that can engage with the pivot shaft 120 is arranged at the center of the fixed base 200. As shown in FIG. 11, a mounting groove 220 extending along the axial direction of the fixed base 200 is arranged at a position off the center of the fixed base 200, and a through hole 221 is provided at the bottom of the mounting groove 220.

[0029] 11, 13 and 14, the locking assembly 300 is movably disposed on the fixed base 200. The locking assembly 300 includes a driving member 310, a brake pin 320, a third reset member 330 and a fourth reset member 340. The driving member 310 is substantially a columnar structure, and is provided with an accommodating groove 311, in which the brake pin 320 is movably disposed, and both ends of the fourth reset member 340 abut the brake pin 320 and the bottom of the accommodating groove 311, respectively. Specifically, the brake pin 320 is provided with a guide post 321, and a guide groove 312 is provided on a side wall of the accommodating groove 311, and the guide post 321 is inserted into the guide groove 312 and is slidable along the guide groove 312. In this way, a sliding connection between the driving member 310 and the brake pin 320 is realized, and a certain cushioning effect is obtained when the brake pin 320 is inserted into the brake hole 110, and accidental damage due to misalignment of the brake pin 320 when inserted into the brake hole 110 is prevented. Furthermore, the end of the brake pin 320 away from the driving member 310 can penetrate the fixed base 200 through the through hole 221 and be inserted into the brake hole 110 (as shown in FIG. 5). In this way, the fixed base 200 and the hub 100 can be locked and engaged, that is, braking of the wheel assembly 20 is realized. The third reset member 330 is disposed around the brake pin 320 and is located outside the driving member 310, and both ends of the third reset member 330 abut against the bottom surface of the mounting groove 220 and the end surface of the driving member 310, respectively. The third reset member 330 constantly moves the drive member 310 in a direction away from the brake hole 110, i.e., constantly moves the brake pin 320 in a direction away from the brake hole 110. In this embodiment, both the third reset member 330 and the fourth reset member 340 are springs.

[0030] Of course, in other embodiments, the brake pin 320 and the brake hole 110 may be replaced with other engagement structures, such as a convex-concave engagement, a hook-ring engagement, etc. Furthermore, in other embodiments, the positions of the brake pin 320 and the brake hole 110 may be interchanged.

[0031] Specifically, as shown in FIG. 6, FIG. 9, FIG. 15, and FIG. 16, the pedal assembly 400 includes a pedal body 410, a rotating frame 420, and a first abutment structure 440, which are connected to each other. In this embodiment, the pedal body 410, the rotating frame 420, and the first abutment structure 440 are integrally formed. In other embodiments, the pedal body 410, the rotating frame 420, and the first abutment structure 440 may be separated from each other. The rotating frame 420 is an annular structure that substantially matches the cross section of the fixed base 200, and the rotating frame 420 is rotatably disposed on the side of the fixed base 200 facing away from the hub 100. As shown in FIG. 16, a first surface 451, a driving inclined surface 430, and a second surface 452 are connected in order on the side of the rotating frame 420 facing the fixed base 200, and the first surface 451 is away from the fixed base 200 with respect to the second surface 452. The pedal body 410 protrudes from the fixed base 200, and the pedal body 410 rotates together with the rotating frame 420. The pedal body 410 has a step surface 411 facing away from the ground. The pedal body 410 has an original position, an intermediate position, and a pedal position. As shown in FIG. 23, the position when the pedal body 410 is not stressed is the original position. As shown in FIG. 26, the position when the pedal body 410 is stepped on in place is the pedal position. As shown in FIG. 25, the intermediate position between the original position and the pedal position is the intermediate position. As shown in FIGS. 19 to 23, the driving inclined surface 430 can press the end of the driving member 310 in a direction away from the brake hole 110 so that the driving member 310 drives the brake pin 320 to move toward the brake hole 110. The rotating frame 420 further includes a first abutment structure 440 spaced apart from the driving inclined surface 430. The first abutment structure 440 includes an abutment body 441 and a first abutment portion 442 fixed to the abutment body 441. The abutment body 441 is capable of a certain degree of elastic deformation.

[0032] 1, 16, 29 to 31, mounting holes 421 are provided in the rotating frame 420, and both ends of the connecting member 30 are fixed by passing through the mounting holes 421 of the left rear wheel assembly 20 and the right rear wheel assembly 20, respectively. In this manner, simultaneous braking or simultaneous unlocking of the left rear wheel assembly 20 and the right rear wheel assembly 20 can be achieved simply by stepping on the pedal body 410 of the right rear wheel assembly 20.

[0033] Further, as shown in FIG. 6 and FIG. 17, the retainer 500 is movably arranged on the side of the fixed base 200 facing away from the hub 100, and is located in the middle of the rotating frame 420, and the movement direction of the retainer 500 intersects with the movement direction of the locking assembly 300. The retainer 500 includes a holding frame 510, a first pressing portion 520, a second pressing portion 530, a connecting portion 540, and a second abutment structure 550. In this embodiment, the holding frame 510, the first pressing portion 520, the second pressing portion 530, the connecting portion 540, and the second abutment structure 550 are integrally formed. In other embodiments, the holding frame 510, the first pressing portion 520, the second pressing portion 530, the connecting portion 540, and the second abutment structure 550 may be components separated from each other. The holding frame 510 has a substantially rectangular frame structure, and the first pressing portion 520 and the second pressing portion 530 are respectively disposed on the opposing first and second sides of the holding frame 510. The first pressing portion 520 can abut the side wall of the driving member 310 or the end of the driving member 310 remote from the brake hole 110. Both ends of the second reset member 620 abut the rotating frame 420 and the second pressing portion 530, respectively. The connecting portion 540 is disposed on the third side of the holding frame 510, and the third side is adjacent to the first side and the second side. The second abutment structure 550 is disposed on the side of the four sides of the holding frame 510 close to the second side, and the fourth side is opposite to the third side. Optionally, as shown in FIG. 20 and FIG. 22, the second abutting structure 550 can include a second abutting portion 551 and a protective sleeve 552 that covers the second abutting portion 551. The protective sleeve 552 is made of a cushioning material such as rubber, and can prevent the second abutting portion 551 from being worn due to direct contact with the first abutting portion 442. Of course, in other embodiments, the setting positions of the first pressing portion 520, the second pressing portion 530, the connecting portion 540 and the second abutting structure 550 can also be adjusted according to actual requirements.

[0034] Further, the retainer 500 has a first position and a second position. As shown in FIG. 6 and FIG. 11, when the retainer 500 is in the first position, the first pressing portion 520 abuts against the side wall of the driving member 310, the driving member 310 receives the elastic reset force of the third reset member 330 and is in a position relatively distant from the brake hole 110, and the brake pin 320 is kept in a state of being disengaged from the brake hole 110. As shown in FIG. 10, when the retainer 500 is in the second position, the first pressing portion 520 at least partially blocks the end of the driving member 310 from the brake hole 110 to prevent the brake pin 320 from being disengaged from the brake hole 110, and the brake pin 320 remains engaged and locked in the brake hole 110. The second reset member 620 allows the retainer 500 to constantly continue to move toward the second position.

[0035] 6, 8, and 10, both ends of the first reset member 610 abut against the fixed base 200 and the rotating frame 420, respectively, and the first reset member 610 constantly moves the pedal assembly 400 in the direction opposite to the first direction F1. In this embodiment, the first reset member 610 and the second reset member 620 are both springs. In this embodiment, the first direction F1 is the clockwise direction in FIGS. 6, 8, and 10.

[0036] Also, as shown in FIG. 6, when the retainer 500 is in the first position and the first surface 451 faces the driving member 310, a force along the first direction F1 acts on the step surface 411 of the pedal body 410 in response to stepping on the step surface 411 of FIG. 6. As shown in FIG. 8, in this case, the rotating frame 420 rotates in the clockwise direction, the driving inclined surface 430 abuts on the driving member 310, the driving member 310 drives the brake pin 320 to move in a direction approaching the brake hole 110, and the brake pin 320 is inserted into the brake hole 110. At the same time, the retainer 500, which had been abutting on the side wall of the driving member 310, moves to a second position in a direction approaching the driving member 310 due to the action of the second reset member 620, and the first pressing portion 520 is pressed against the end of the driving member 310 away from the brake hole 110. As shown in FIG. 11, the brake pin 320 engages with the brake hole 110 to maintain the locked state.

[0037] As shown in Fig. 10, when the retainer 500 is in the second position, the first abutment portion 442 abuts against the second abutment structure 550. In this case, a force along the first direction F1 is applied to the step surface 411 of the pedal body 410, the first abutment portion 442 of the rotating frame 420 abuts against the second abutment structure 550 of the holding frame 510, and the entire retainer 500 moves to the first position in a direction away from the driving member 310. The driving member 310, which has lost the force from the first pressing portion 520, drives the brake pin 320 to move away from the brake hole 110 by the action of the third reset member 330, and the brake pin 320 maintains a state of being disengaged from the brake hole 110 as shown in Fig. 6.

[0038] Furthermore, as shown in Figures 3 and 18, the decorative cover 700 covers the side of the fixed base 200 opposite the hub 100, and the decorative cover 700 and the fixed base 200 define an accommodation space, and the retainer 500, the rotating frame 420, the first abutment structure 440, the first reset member 610, and the second reset member 620 are all positioned within the accommodation space.

[0039] Specifically, as shown in FIG. 6 and FIG. 7, the display assembly 800 includes a display window 810 disposed in the decorative cover 700, and an indicator 820. The indicator 820 is fixed to the connecting portion 540. That is, the indicator 820 moves together with the retainer 500. The indicator 820 has a first display area 821 and a second display area 822. For example, the first display area 821 may be provided with a green marker, and the second display area 822 may be provided with a red marker. When the retainer 500 is in the first position, the first display area 821 is aligned with the display window 810. That is, the green marker is aligned with the display window 810, indicating that the wheel assembly 20 is unlocked. When the retainer 500 is in the second position, the second display area 822 is aligned with the display window 810, indicating that the wheel assembly 20 is braked. In this way, it is convenient for the user to judge the braking status of the wheel assemblies 20, and the safety performance of the baby carrier is improved. Of course, in other embodiments, other forms of the indication assembly 800 may also be employed.

[0040] As shown in Figures 29 to 31, the brake mechanism 22 of the left rear wheel assembly 20 is almost similar to the brake mechanism 22 of the right rear wheel assembly 20, except that the pedal assembly 400 of the brake mechanism 22 of the left rear wheel assembly 20 does not have a pedal body 410, and only has a rotating frame 420 and a first abutment structure 440.

[0041] The specific operating principle of the baby carrier is as follows.

[0042] As shown in FIG. 23 and FIG. 24, the retainer 500 is in the first position, the right rear wheel assembly 20 is in the unlocked state, the brake pin 320 is out of the brake hole 110, the pedal body 410 is in the original position, and the first surface 451 of the rotating frame 420 faces the driving member 310. When braking is required, the user steps on the step surface 411. That is, a force along the first direction F1 is applied to the pedal body 410, the entire pedal assembly 400 rotates along the first direction F1, and the first reset member 610 is compressed (see FIG. 25). At this time, the pedal body 410 is in the intermediate position, and the first abutment portion 442 crosses the second abutment structure 550 from the right side of the second abutment structure 550 to the left side of the second abutment structure 550. The driving inclined surface 430 of the rotating frame 420 abuts against the driving member 310. As shown in FIG. 9, the driving member 310 drives the brake pin 320 to move in a direction approaching the brake hole 110, and the brake pin 320 is inserted into the brake hole 110, so that the right rear wheel assembly 20 is in a braking state. At this time, the third reset member 330 is compressed, and the second indication area 822 is aligned with the indication window 810. At the same time, as shown in FIG. 11 and FIG. 25, the driving member 310 moves in a direction approaching the brake hole 110, so that the retainer 500, which was initially in contact with the side wall of the driving member 310, moves in a direction approaching the driving member 310, i.e., in the second direction F2, by the action of the second reset member 620, and the first pressing portion 520 is pressed against the end of the driving member 310 away from the brake hole 110, so that the brake pin 320 and the brake hole 110 are held in a locked engagement state. 26 and 27, in this case, the pedal body 410 is in a stepping position, and the second surface 452 on the rotating frame 420 faces the driving member 310. When the user no longer steps on the step surface 411, that is, when the force applied to the pedal body 410 is released, the pedal assembly 400 rotates in the direction opposite to the first direction F1 due to the elastic force of the first reset member 610, the pedal body 410 returns to its original position, and the first surface 451 on the rotating frame 420 faces the driving member 310, as shown in FIG.When the pedal assembly 400 returns to its original position, the contact force of the contact body 441 is insufficient to move the second contact structure 550, so that the first contact portion 442 crosses the second contact structure 550 from the left side of the second contact structure 550 to the right side of the second contact structure 550 without changing the position of the retainer 500, and the right rear wheel assembly 20 maintains the locked state. At the same time, as shown in Figures 30 to 32, when the pedal assembly 400 of the right rear wheel assembly 20 performs the above-mentioned operation, the coupling member 30 drives the brake mechanism 22 of the left rear wheel assembly 20 to rotate in the reverse direction, so that other similar components on the brake mechanism 22 of the left rear wheel assembly 20 are coupled and moved, transitioning from the unlocked state to the locked state. For example, when the pedal assembly 400 of the right rear wheel assembly 20 in FIG. 30 receives a force and rotates along a first direction F1, the rotating frame 420 of the left rear wheel assembly 20 receives a traction force of the connecting member 30 and rotates along a third direction F3.

[0043] 28, when it is necessary to unlock the wheel assembly 20 again, the user steps on the step surface 411 to move the pedal body 410 to the stepping position again. That is, a force along the first direction F1 is applied to the pedal body 410 again, the entire pedal assembly 400 rotates along the first direction F1, and the first reset member 610 is compressed. The first abutment portion 442 of the rotating frame 420 abuts on the second abutment structure 550 of the retainer 500, and the entire retainer 500 moves to the first position in a direction away from the drive member 310, i.e., in the opposite direction to the second direction F2, and the second reset member 620 is compressed. The driving member 310, which has lost the force from the first pressing portion 520, drives the brake pin 320 away from the brake hole 110 by the elastic force of the third reset member 330 until the brake pin 320 is removed from the brake hole 110, the wheel assembly 20 is in the unlocked state, and the first display area 821 is aligned with the display window 810. When the user no longer steps on the step surface 411, that is, when the force applied to the pedal body 410 is released, the pedal assembly 400 rotates in the direction opposite to the first direction F1 by the elastic force of the first reset member 610, and the pedal body 410 returns to its original position as shown in FIG. In this case, the third reset member 330 causes the driving member 310 to return to an unlocked state away from the brake hole 110, and the second reset member 620 causes the retainer 500 to move toward the driving member 310, and the first pressing portion 520 abuts against the side wall of the driving member 310, i.e., the retainer 500 is in the first position. Therefore, the brake pin 320 and the brake hole 110 maintain a disengaged state. In this case, the first pressing portion 520 abuts against the side wall of the driving member 310, and the retainer 500 is in the first position on the left side. Therefore, compared with the case where the retainer 500 is in the second position on the right side, the distance between the second abutment structure 550 of the retainer 500 and the first abutment portion 442 of the rotating frame 420 becomes larger.In this way, when braking is required again and the pedal body 410 is depressed, the first abutment portion 442 does not abut against the second abutment structure 550 but crosses the second abutment structure 550, so that after the driving inclined surface 430 acts on the driving member 310, the first pressing portion 520 is pressed against the end of the driving member 310 on the side away from the brake hole 110 again, and the brake pin 320 can be prevented from moving in the direction away from the brake hole 110. Similarly, the brake mechanism 22 of the left rear wheel assembly 20 is driven by the connecting member 30 and realizes a transition from a locked state to an unlocked state through a similar structure.

[0044] According to the brake mechanism 22, due to an ingenious structural design, when braking or unlocking the wheel assembly 20, it is only necessary to step on the pedal body 410. After the completion of braking or unlocking, a corresponding structure such as a retainer 500 is provided, so that the wheel assembly 20 is maintained in a braking or unlocking state, and the pedal body 410 can return to a relatively upper position where it can be stepped on under the action of the first reset member 610 without affecting the braking or unlocking state of the wheel assembly 20.

[0045] The braking mechanism 22 and baby carrier provide at least the following beneficial effects:

[0046] In the brake mechanism 22, when braking is required, only a force along the first direction F1 needs to be applied to the pedal assembly 400. For example, when the user performs a stepping motion, the retainer 500 moves from the first position to the second position, and the second engagement portion 102 and the first engagement portion 101 (in this embodiment, the brake pin 320 and the brake hole 110) are locked and maintained in an engaged state. That is, the hub 100 and the fixed base 200 are in a braking state, and the pedal assembly 400 is reset by moving in the opposite direction to the first direction F1 due to the action of the first reset member 610. Therefore, when unlocking is required, only a force along the first direction F1 needs to be applied to the pedal assembly 400 again. For example, when the user performs a stepping motion, the retainer 500 moves from the second position to the first position, and the first engagement portion 101 and the second engagement portion 102 (in this embodiment, the brake hole 110 and the brake pin 320) are released from engagement. That is, the hub 100 and the fixed base 200 are in an unlocked state. Then, the pedal assembly 400 is reset again by moving in the direction opposite to the first direction F1 due to the action of the first reset member 610. Therefore, in the brake mechanism 22, it is only necessary to step on the brake pedal regardless of braking or unlocking, which makes the operation convenient and prevents damage to the user's shoes.

[0047] The technical features of the above embodiments can be combined in any manner. For the sake of brevity, not all possible combinations of the technical features of the above embodiments are described, but all combinations of technical features are deemed to be within the scope described herein, unless they are mutually inconsistent.

[0048] The above embodiments only describe some embodiments of the present invention, and the description is specific and detailed, but cannot be understood as limiting the patent scope of the present invention. It should be noted that those skilled in the art can make further modifications and improvements without departing from the concept of the present invention, all of which are included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the claims. [Explanation of symbols]

[0049] 10: Frame 20: Wheel assembly 21: Wheel body 22: Brake mechanism 100: Hub 110: Brake hole 120: Pivot axis 200: Fixed base 210: Pivot hole 220: Mounting groove 221:Through hole 300: Locking Assembly 310: Driving member 311: Storage groove 312: Guide groove 320: Brake pin 321: Guidepost 330: Third reset member 340: Fourth reset member 400: Pedal assembly 410: Pedal body 411: Step surface 420: Rotating frame 421: Mounting hole 430: Drive inclined surface 440: First abutment structure 441: Contact body 442: First contact part 451: First Side 452: The Second Side 500: Retainer 510: Holding frame 520: First pressing unit 530: Second pressing part 540: Connection part 550: Second abutment structure 551: Second abutment body 552: Protective sleeve 610: First reset member 620: Second reset member 700: Decorative cover 800: Display Assembly 810: Display window 820: Indicator 821: First display area 822: Second display area 900: Connector 30: Connecting member 101: First engagement portion 102: Second engagement portion

Claims

1. A hub (100) having a first engagement portion (101); a fixed base (200) fixed to the hub (100), the fixed base (200) including a second engagement portion (102) capable of engaging with and locking with the first engagement portion (101); a retainer (500) having a first position and a second position, wherein when the retainer (500) is in the first position, the second engagement portion (102) is maintained in a disengaged state from the first engagement portion (101), and when the retainer (500) is in the second position, the second engagement portion (102) is engaged with the first engagement portion (101) and maintained in a locked state; a pedal assembly (400), wherein when the retainer (500) is in the first position and a force along a first direction is applied to the pedal assembly (400), the retainer (500) moves from the first position to the second position, and when the retainer (500) is in the second position and a force along the first direction is applied to the pedal assembly (400), the retainer (500) moves from the second position to the first position; a first reset member (610) that continues to move the pedal assembly (400) in a direction opposite to the first direction. Brake mechanism (22).

2. 2. The brake mechanism of claim 1, wherein the pedal assembly includes a pedal body and a drive ramp that are connected to each other, and when the retainer is in the first position and a force along the first direction is applied to the pedal body, the drive ramp moves along the first direction to drive the second engagement portion to engage and lock with the first engagement portion.

3. The brake mechanism (22) according to claim 1 or 2, wherein the retainer (500) is movably arranged on the fixed base (200), a moving direction of the retainer (500) intersects with a moving direction of the second engagement portion (102), and when the retainer (500) is in the second position, the retainer (500) acts on the second engagement portion (102) to move the second engagement portion (102) in a direction approaching the first engagement portion (101).

4. The brake mechanism (22) of any one of claims 1 to 3, further comprising a second reset member (620) that maintains the retainer (500) moved toward the second position.

5. The brake mechanism (22) of any one of claims 1 to 4, wherein the pedal assembly (400) includes a pedal body (410) and a first abutment portion (442) connected to each other, the retainer (500) has a second abutment structure (550), and the first abutment portion (442) abuts against the second abutment structure (550) when the retainer (500) is in the second position.

6. the pedal assembly (400) further includes a rotating frame (420) connected to the pedal body (410), the rotating frame (420) being rotatably disposed on the fixed base (200), the first abutment portion (442) being disposed on the rotating frame (420), the rotating frame (420) further including a drive ramp (430) disposed at a distance from the first abutment portion (442); 6. The brake mechanism (22) of claim 5, wherein when the retainer (500) is in the first position and a force along the first direction is applied to the pedal body (410), the drive ramp surface (430) moves along the first direction to drive the second engagement portion (102) to engage and lock with the first engagement portion (101).

7. A brake mechanism (22) as described in any one of claims 1 to 6, wherein the first engagement portion (101) is a brake hole (110) arranged in the hub (100), the second engagement portion (102) is a brake pin (320) movably arranged on the fixed base (200), and the brake pin (320) is insertable into the brake hole (110).

8. 8. The brake mechanism (22) of claim 7, further comprising a drive member (310) disposed at an end of the brake pin (320) remote from the brake hole (110), and the retainer (500) abuts against the end of the drive member (310) remote from the brake hole (110) when the retainer (500) is in the second position.

9. 9. The brake mechanism (22) of claim 8, further comprising a third reset member (330) disposed around the brake pin (320), both ends of the third reset member (330) abutting against the fixed base (200) and the drive member (310), respectively.

10. 10. The brake mechanism (22) of claim 8 or 9, wherein the brake pin (320) has a guide post (321), the drive member (310) has a guide groove (312), and the guide post (321) is inserted into the guide groove (312) and is slidable along the guide groove (312).

11. The brake mechanism (22) according to any one of claims 8 to 10, further comprising a fourth reset member (340), the drive member (310) having an accommodating groove (311), the brake pin (320) being movably disposed within the accommodating groove (311), and two ends of the fourth reset member (340) abutting against the brake pin (320) and a bottom of the accommodating groove (311), respectively.

12. The brake mechanism (22) of any one of claims 1 to 11, further comprising an indicating assembly (800) adapted to assume a first indicating state when the retainer (500) is in the first position and to assume a second indicating state when the retainer (500) is in the second position.

13. The display assembly (800) further includes a decorative cover (700) covering the fixed base (200), the display assembly (800) including a display window (810) disposed in the decorative cover (700) and an indicator (820) fixed to the retainer (500), the indicator (820) having a first display area (821) and a second display area (822); 13. The brake mechanism (22) of claim 12, wherein the first indication area (821) is aligned with the indication window (810) when the retainer (500) is in the first position, and the second indication area (822) is aligned with the indication window (810) when the retainer (500) is in the second position.

14. A baby carrier comprising a wheel assembly (20) provided with a brake mechanism (22) according to any one of claims 1 to 13.

15. 15. The baby carrier of claim 14, further comprising a connecting member (30), wherein two wheel assemblies (20) are provided, each of the two wheel assemblies (20) having the brake mechanism (22), and wherein two ends of the connecting member (30) are respectively connected to the pedal assemblies (400) of the two wheel assemblies (20).

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