Brake mechanism and baby carrier

Abstract

Providing a braking mechanism. [Solution] The brake mechanism comprises a hub having a first engaging portion, a fixed base fixed to the hub and having a second engaging portion that can engage with the first engaging portion and lock, and a retainer having a first position and a second position, wherein when the retainer is in the first position, the second engaging portion is maintained in a state disengaged from the first engaging portion, and when the retainer is in the second position, the second engaging portion is maintained in a state engaged with the first engaging portion and locked, the retainer is movably disposed on the fixed base, the direction of movement of the retainer intersects with the direction of movement of the second engaging portion, and when the retainer is in the second position, the retainer acts on the second engaging portion, moving the second engaging portion in a direction toward the first engaging portion.

Description

Technical Field

[0001] The present disclosure relates to the field of baby products, and more particularly, to a braking mechanism and a baby carrier.

Background Art

[0002] In a baby carrier such as a general baby stroller, the brake pedal of its braking mechanism is almost always required to reciprocate in order to achieve braking and unlocking of the baby stroller. For example, when the brake pedal is depressed, the baby stroller is braked, and when unlocking the baby stroller, it is necessary to hook the brake pedal with the foot.

Summary of the Invention

Problems to be Solved by the Invention

[0003] Therefore, the operation is very inconvenient and there is a risk of damaging the user's shoes.

Means for Solving the Problems

[0004] According to one aspect of the present disclosure, a braking mechanism is provided. The braking mechanism includes a hub, a fixed base, a retainer, a pedal assembly, and a first reset member. The hub is provided with a first engaging portion. The fixed base is fixed to the hub and includes a second engaging portion that can engage with the first engaging portion to be locked. The retainer has a first position and a second position. The second engaging portion is kept disengaged from the first engaging portion when the retainer is in the first position, and the second engaging portion is kept engaged with the first engaging portion and locked with the first engaging portion when the retainer is in the second position. 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. 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 always moves the pedal assembly in a direction opposite to the first direction.

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

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

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

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

[0009] In one embodiment, the pedal assembly further includes a rotating frame connected to the pedal body, the rotating frame being rotatably positioned on a fixed base, a first contact portion being positioned on the rotating frame, the rotating frame further comprising a drive inclined surface positioned at a distance from the first contact portion, and when a force is applied to the pedal body along a first direction while the retainer is in a first position, the drive inclined surface moves along the first direction, driving a second engaging portion to engage with the first engaging portion and lock.

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

[0011] In one embodiment, the brake mechanism further includes a drive member positioned at the end of a brake pin away from the brake hole. When the retainer is in a second position, the retainer abuts against the end of the drive member away from the brake hole.

[0012] In one embodiment, the brake mechanism further includes a third reset member positioned around the brake pin. Both ends of the third reset member abut against a fixed base and a 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 is inserted into the guide groove and is slidable along the guide groove.

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

[0015] In one embodiment, the brake mechanism further includes an indicator assembly adapted such that it enters a first indicator state when the retainer is in a first position and a second indicator state when the retainer is in a second position.

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

[0017] According to another aspect of this disclosure, a baby carrier is provided. The baby carrier includes a wheel assembly having the brake mechanism described above.

[0018] In one embodiment, the baby carrier further includes a connecting member. Two wheel assemblies are provided. Each of the two wheel assemblies is provided with a braking 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 view showing a baby carrier according to an embodiment of the present disclosure. [Figure 2] FIG. 2 is a schematic structural view showing the baby carrier shown in FIG. 1 from another perspective. [Figure 3] FIG. 3 is an enlarged view of part A of FIG. 2, that is, an enlarged view of the right rear wheel assembly of the baby carrier. [Figure 4] FIG. 4 is a schematic view showing a part of the structure of FIG. 3. [Figure 5] FIG. 5 is a schematic view showing another part of the structure of FIG. 3. [Figure 6] FIG. 6 is a schematic structural view of FIG. 4 when the decorative cover is omitted. In this case, the retainer is in the first position, the wheel assembly is in the unlocked state, and the pedal assembly is in the unstepped state. [Figure 7] FIG. 7 is an enlarged view of part B of FIG. 6. [Figure 8] FIG. 8 is another schematic structural view of FIG. 4 when the decorative cover is omitted. In this case, the retainer is in the second position, the wheel assembly is in the locked state, and the pedal assembly is in the stepped state. [Figure 9] FIG. 9 is a schematic structural view of FIG. 8 from another perspective. [Figure 10] FIG. 10 is another schematic structural view of FIG. 4 when the decorative cover is omitted. In this case, the retainer is in the second position, the wheel assembly is in the locked state, and the pedal assembly is in the unstepped state. [Figure 11] FIG. 11 is a partial cross-sectional view of FIG. 10. [Figure 12]Figure 12 is a schematic structural diagram showing the fixed base in Figure 10. [Figure 13] Figure 13 is a schematic structural diagram showing the locking assembly of Figure 10. [Figure 14] Figure 14 is a cross-sectional view of the locking assembly of Figure 13. [Figure 15] Figure 15 is a schematic structural diagram showing the pedal assembly of Figure 10. [Figure 16] Figure 16 is a schematic structural diagram showing the pedal assembly shown in Figure 15 from another perspective. [Figure 17] Figure 17 is a schematic structural diagram showing the retainer of Figure 10. [Figure 18] Figure 18 is a schematic structural diagram showing the decorative cover of Figure 10. [Figure 19] Figure 19 is a schematic structural diagram of Figure 4 when the decorative cover and the fixed base are omitted. In this case, the pedal is in the middle position and the driving member abuts against the driving inclined surface. [Figure 20] Figure 20 is another schematic structural diagram of Figure 4 when the decorative cover and the fixed base are omitted. In this case, the pedal is in the depressed position and the driving member abuts against the second surface. [Figure 21] Figure 21 is a schematic structural diagram from another perspective of Figure 20. [Figure 22] Figure 22 is another schematic structural diagram of Figure 4 when the decorative cover and the fixed base are omitted. In this case, 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] Figure 23 is a schematic structural diagram of Figure 4 when the decorative cover is omitted. In this case, 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 not depressed. [Figure 24] Figure 24 is a schematic structural diagram of Figure 23 from another perspective. [Figure 25]Figure 25 is a schematic diagram of Figure 4 when the decorative cover is omitted. In this case, the pedal is in the intermediate position, and the drive member is in contact with the drive inclined surface. [Figure 26] Figure 26 is another schematic diagram of Figure 4 with the decorative cover omitted, in which case the pedal is in the depressed position, the retainer is in the second position, and the right rear wheel assembly is in the locked position. [Figure 27] Figure 27 is a schematic diagram of Figure 26 from a different perspective. [Figure 28] Figure 28 is another schematic diagram of Figure 4 with the decorative cover omitted, in which case the pedal is in the initial position, the retainer is in the second position, and the right rear wheel assembly is locked. [Figure 29] Figure 29 is a schematic diagram showing the brake mechanism of the right rear wheel assembly of the baby carrier shown in Figure 3. [Figure 30] Figure 30 is a schematic diagram illustrating the brake coupling principle of the left and right rear wheel assemblies of the baby carrier shown in Figure 3. In this case, the pedals are in the initial position, the retainers of both the left and right rear wheel assemblies are in the first position, and both the left and right rear wheel assemblies are in the unlocked state. [Figure 31] Figure 31 is a schematic diagram of Figure 30 viewed from a different perspective. [Figure 32] Figure 32 is a schematic diagram illustrating the brake coupling principle of the left and right rear wheel assemblies of the baby carrier shown in Figure 3. In this case, the pedal is in the depressed position, the retainer is in the second position, and both the left and right rear wheel assemblies are locked. [Modes for carrying out the invention]

[0020] To further clarify the purpose, technical solutions, and benefits of this disclosure, this disclosure is described below in more detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are intended solely for interpretation of this disclosure and do not limit the scope of protection provided herein.

[0021] When a component is described as "attached" to another component, it should be noted that this could mean that the component is directly positioned to the other component, or that an intermediate component may be present. When a component is described as "connected" to another component, it could mean that it is directly connected to the other component, or that an intermediate component may coexist. The terms “vertical,” “horizontal,” “left,” “right,” and similar expressions used herein are for illustrative purposes only and do not imply a unique embodiment.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the field of this disclosure. Terms used herein are for the sole purpose of describing specific embodiments and are not intended to limit this disclosure. The terms “and / or” as used herein include any and all combinations of one or more related enumerated items.

[0023] As shown in Figure 1, embodiments of the present disclosure provide a baby carrier, such as a stroller. The baby carrier is easy to operate, as braking or unlocking only requires pressing the brake pedal, and there is no risk of damaging the user's shoes.

[0024] As shown in Figures 1 and 2, the baby carrier includes a frame 10, a plurality of wheel assemblies 20 located at the bottom of the frame 10, and a connecting member 30. In this embodiment, the baby carrier comprises 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, respectively. 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 connected to the brake mechanisms 22 of the left rear wheel assembly 20 and the right rear wheel assembly 20, respectively, connecting the two brake mechanisms 22 to be simultaneously in a braked or unlocked state. In this embodiment, the connecting member 30 is a steel wire. Of course, in other embodiments, the connecting member 30 may have other connecting structures.

[0025] Of course, in other embodiments, there may be more or fewer than four wheel assemblies 20, depending on the actual requirements. The brake mechanism 22 may also be located in the left front wheel assembly 20 or the right front wheel assembly 20, if necessary.

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

[0027] As shown in Figures 3, 6 through 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 Figure 5, the wheel body 21 is positioned around the hub 100, with multiple brake holes 110 evenly spaced circumferentially near the center of the hub 100, and a pivot shaft 120 located at the center of the wheel hub 100. In another embodiment, the hub 100 is provided with one brake hole 110. As shown in Figures 3, 6, and 12, the fixed base 200 is substantially cylindrical and 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, which can engage with the pivot shaft 120, is provided at the center of the fixed base 200. As shown in Figure 11, a mounting groove 220 extending along the axial direction of the fixed base 200 is located off-center from the fixed base 200, and a through hole 221 is provided at the bottom of the mounting groove 220.

[0029] Furthermore, as shown in Figures 11, 13, and 14, the locking assembly 300 is movably positioned on the fixed base 200. The locking assembly 300 includes a drive member 310, a brake pin 320, a third reset member 330, and a fourth reset member 340. The drive member 310 is substantially columnar in shape and is provided with a housing groove 311, in which the brake pin 320 is movably positioned, and both ends of the fourth reset member 340 abut against the brake pin 320 and the bottom of the housing groove 311, respectively. Specifically, the brake pin 320 is provided with a guide post 321, and the side wall of the housing groove 311 is provided with a guide groove 312, into which the guide post 321 is inserted and slidable along the guide groove 312. In this way, a sliding connection is achieved between the drive member 310 and the brake pin 320, providing a certain cushioning effect when the brake pin 320 is inserted into the brake hole 110, preventing accidental damage due to misalignment of the brake pin 320 during insertion into the brake hole 110. Furthermore, the end of the brake pin 320 away from the drive member 310 can pass through the through hole 221 and through the fixed base 200 and be inserted into the brake hole 110 (as shown in Figure 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 achieved. The third reset member 330 is positioned around the brake pin 320 and on the outside of the drive member 310, with both ends of the third reset member 330 contacting the bottom surface of the mounting groove 220 and the end surface of the drive member 310, respectively. The third reset member 330 constantly moves the drive member 310 away from the brake hole 110, that is, constantly moves the brake pin 320 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 engagement between a convex portion and a concave portion, or engagement between a hook and a ring. Furthermore, in other embodiments, the positions of the brake pin 320 and the brake hole 110 may be swapped.

[0031] Specifically, as shown in Figures 6, 9, 15, and 16, the pedal assembly 400 includes a pedal body 410, a rotating frame 420, and a first contact structure 440, all connected to each other. In this embodiment, the pedal body 410, the rotating frame 420, and the first contact structure 440 are integrally formed. In other embodiments, the pedal body 410, the rotating frame 420, and the first contact structure 440 may be separate from each other. The rotating frame 420 is an annular structure substantially coinciding with the cross-section of the stationary base 200, and the rotating frame 420 is rotatably positioned on the side of the stationary base 200 facing away from the hub 100. As shown in Figure 16, the side of the rotating frame 420 facing the stationary base 200 is provided with a first surface 451, a drive inclined surface 430, and a second surface 452 connected in order, with the first surface 451 being away from the stationary base 200 relative to the second surface 452. The pedal body 410 extends from the fixed base 200 and rotates 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 Figure 23, the original position is the position when no stress is applied to the pedal body 410. As shown in Figure 26, the pedal position is the position when the pedal body 410 is pressed in place. As shown in Figure 25, the intermediate position is the position midway between the original position and the pedal position. As shown in Figures 19 to 23, the drive inclined surface 430 can press the end of the drive member 310 away from the brake hole 110 so that the drive member 310 drives the brake pin 320 toward the brake hole 110. The rotating frame 420 further comprises a first contact structure 440 positioned at a distance from the drive inclined surface 430. The first contact structure 440 includes a contact body 441 and a first contact portion 442 fixed to the contact body 441. The contact body 441 is capable of a certain degree of elastic deformation.

[0032] Furthermore, as shown in Figures 1, 16, 29 to 31, the rotating frame 420 is provided with mounting holes 421, 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 way, by simply stepping on the pedal body 410 of the right rear wheel assembly 20, simultaneous braking or simultaneous unlocking of the left rear wheel assembly 20 and the right rear wheel assembly 20 can be achieved.

[0033] Furthermore, as shown in Figures 6 and 17, the retainer 500 is movably positioned 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, with the direction of movement of the retainer 500 intersecting the direction of movement of the locking assembly 300. The retainer 500 includes a retaining frame 510, a first pressing portion 520, a second pressing portion 530, a connecting portion 540, and a second contact structure 550. In this embodiment, the retaining frame 510, the first pressing portion 520, the second pressing portion 530, the connecting portion 540, and the second contact structure 550 are integrally formed. In other embodiments, the retaining frame 510, the first pressing portion 520, the second pressing portion 530, the connecting portion 540, and the second contact structure 550 may be separate components. The retaining frame 510 has a substantially rectangular frame structure, and the first pressing portion 520 and the second pressing portion 530 are located on the first and second opposing sides of the retaining frame 510, respectively. The first pressing portion 520 can abut against the side wall of the drive member 310 or the end of the drive member 310 away from the brake hole 110. Both ends of the second reset member 620 abut against the rotating frame 420 and the second pressing portion 530, respectively. The connecting portion 540 is located on the third side of the retaining frame 510, and the third side is adjacent to the first and second sides. The second contact structure 550 is located on the side of the retaining frame 510 closest to the second side, while the fourth side is on the opposite side from the third side. Optionally, as shown in Figures 20 and 22, the second contact structure 550 may include a second contact portion 551 and a protective sleeve 552 that sleeves the second contact portion 551. The protective sleeve 552 is made of a cushioning material such as rubber and can prevent wear caused by direct contact between the second contact portion 551 and the first contact 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 contact structure 550 can also be adjusted according to actual requirements.

[0034] Furthermore, the retainer 500 has a first position and a second position. As shown in Figures 6 and 11, when the retainer 500 is in the first position, the first pressing portion 520 abuts against the side wall of the drive member 310, and the drive member 310 is positioned relatively away from the brake hole 110 by the elastic reset force of the third reset member 330, and the brake pin 320 is kept disengaged from the brake hole 110. As shown in Figure 10, when the retainer 500 is in the second position, the first pressing portion 520 at least partially isolates the end of the drive member 310 from the brake hole 110, preventing the brake pin 320 from moving away from the brake hole 110, and the brake pin 320 remains engaged and locked in the brake hole 110. The second reset member 620 ensures that the retainer 500 is always moving toward the second position.

[0035] Furthermore, as shown in Figures 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 continuously moves the pedal assembly 400 in the direction opposite to the first direction F1. In this embodiment, both the first reset member 610 and the second reset member 620 are springs. In this embodiment, the first direction F1 is clockwise in Figures 6, 8, and 10.

[0036] Furthermore, as shown in Figure 6, when the retainer 500 is in the first position and the first surface 451 is facing the drive member 310, a force along the first direction F1 acts on the step surface 411 of the pedal body 410 in accordance with pressing down on the step surface 411 in Figure 6. As shown in Figure 8, in this case, the rotating frame 420 rotates clockwise, the drive inclined surface 430 comes into contact with the drive member 310, the drive member 310 moves in a direction that drives the brake pin 320 toward the brake hole 110, and the brake pin 320 is inserted into the brake hole 110. At the same time, due to the action of the second reset member 620, the retainer 500 that was in contact with the side wall of the drive member 310 moves to a second position toward the drive member 310, and the first pressing portion 520 is pressed against the end of the drive member 310 away from the brake hole 110. As shown in Figure 11, the brake pin 320 engages with the brake hole 110 and remains locked.

[0037] As shown in Figure 10, when the retainer 500 is in the second position, the first contact portion 442 contacts the second contact structure 550. In this case, a force along the first direction F1 is applied to the step surface 411 of the pedal body 410, causing the first contact portion 442 of the rotating frame 420 to contact the second contact structure 550 of the holding frame 510, and the entire retainer 500 moves to the first position in a direction away from the drive member 310. Having lost the force from the first pressing portion 520, the drive member 310 is driven by the action of the third reset member 330 to move the brake pin 320 away from the brake hole 110, and as shown in Figure 6, the brake pin 320 remains disengaged from the brake hole 110.

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

[0039] Specifically, as shown in Figures 6 and 7, the display assembly 800 includes a display window 810 located 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 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 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 determine the braking state of the wheel assembly 20, and the safety performance of the baby carrier is improved. Of course, in other embodiments, other forms of indicator assemblies 800 may also be used.

[0040] As shown in Figures 29 to 31, the brake mechanism 22 of the left rear wheel assembly 20 is almost the same as the brake mechanism 22 of the right rear wheel assembly 20, but differs in 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 is provided only with a rotating frame 420 and a first contact structure 440.

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

[0042] As shown in Figures 23 and 24, the retainer 500 is in the first position, the right rear wheel assembly 20 is unlocked, the brake pin 320 is disengaged from the brake hole 110, the pedal body 410 is in its original position, and the first surface 451 of the rotating frame 420 faces the drive member 310. When braking is required, the user steps on the step surface 411. That is, a force is applied to the pedal body 410 along the first direction F1, causing the entire pedal assembly 400 to rotate along the first direction F1 and the first reset member 610 to be compressed (see Figure 25). At this time, the pedal body 410 is in the intermediate position, and the first contact portion 442 crosses the second contact structure 550 from the right side to the left side of the second contact structure 550. The drive inclined surface 430 of the rotating frame 420 contacts the drive member 310. As shown in Figure 9, the drive member 310 drives the brake pin 320 to move toward the brake hole 110, so that the brake pin 320 is inserted into the brake hole 110 and the right rear wheel assembly 20 is braked. At this time, the third reset member 330 is compressed and the second display area 822 is aligned with the display window 810. Simultaneously, as shown in Figures 11 and 25, the drive member 310 moves toward the brake hole 110, so the retainer 500, which was initially in contact with the side wall of the drive member 310, moves toward the drive member 310, i.e., the second direction F2, due to the action of the second reset member 620, and the first pressing portion 520 is pressed against the end of the drive member 310 away from the brake hole 110, so that the brake pin 320 and the brake hole 110 are held in a locked engaged state. As shown in Figures 26 and 27, in this case, the pedal body 410 is in the depressed position, and the second surface 452 on the rotating frame 420 faces the drive member 310. When the user stops pressing 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 opposite direction 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 drive member 310, as shown in Figure 28.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. Therefore, without changing the position of the retainer 500, the first contact portion 442 crosses the second contact structure 550 from its left side to its right side, thus maintaining the locked state of the right rear wheel assembly 20. Simultaneously, as shown in Figures 30 to 32, when the pedal assembly 400 of the right rear wheel assembly 20 performs the above operation, the connecting member 30 drives the brake mechanism 22 of the left rear wheel assembly 20 in the reverse direction, thereby connecting and moving other similar components on the brake mechanism 22 of the left rear wheel assembly 20, transitioning from the unlocked state to the locked state. For example, when the pedal assembly 400 of the right rear wheel assembly 20 in Figure 30 is subjected to a force and rotates along a first direction F1, the rotating frame 420 of the left rear wheel assembly 20 is subjected to a traction force from the connecting member 30 and rotates along a third direction F3.

[0043] As shown in Figure 28, if the wheel assembly 20 needs to be unlocked again, the user steps on the step surface 411 to move the pedal body 410 back into the pressed position. That is, a force is applied again to the pedal body 410 along the first direction F1, causing the entire pedal assembly 400 to rotate along the first direction F1 and the first reset member 610 to be compressed. The first contact portion 442 of the rotating frame 420 comes into contact with the second contact structure 550 of the retainer 500, causing the entire retainer 500 to move away from the drive member 310, i.e., to a first position in the opposite direction to the second direction F2, and the second reset member 620 is compressed. Having lost the force from the first pressing portion 520, the drive member 310 is driven by the elastic force of the third reset member 330 to move the brake pin 320 away from the brake hole 110, until the brake pin 320 disengages from the brake hole 110, the wheel assembly 20 is unlocked, and the drive member continues until the first display area 821 aligns with the display window 810. When the user stops stepping on the step surface 411, that is, when the force applied to the pedal body 410 is released, the pedal assembly 400 rotates along the direction opposite to the first direction F1 due to the elastic force of the first reset member 610, and the pedal body 410 returns to its original position as shown in Figure 23. In this case, the action of the third reset member 330 causes the drive member 310 to return to an unlocked state away from the brake hole 110, and the action of the second reset member 620 causes the retainer 500 to move toward the drive member 310, and the first pressing portion 520 comes into contact with the side wall of the drive member 310, i.e., the retainer 500 is in the first position. Therefore, the brake pin 320 and the brake hole 110 remain disengaged. In this case, the first pressing portion 520 comes into contact with the side wall of the drive member 310, and the retainer 500 is in the first position on the left. Therefore, compared to the case where the retainer 500 is in the second position on the right, the distance between the second contact structure 550 of the retainer 500 and the first contact portion 442 of the rotating frame 420 is larger.Thus, when braking is needed again and the pedal body 410 is pressed down, the first contact portion 442 does not contact the second contact structure 550, but rather crosses the second contact structure 550. After the drive inclined surface 430 acts on the drive member 310, the first pressing portion 520 is again pressed against the end of the drive member 310 away from the brake hole 110, preventing the brake pin 320 from moving 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 achieves a transition from a locked state to an unlocked state via a similar structure.

[0044] According to the brake mechanism 22, due to its ingenious structural design, braking or unlocking the wheel assembly 20 only requires pressing the pedal body 410. After braking or unlocking is complete, a corresponding structure such as a retainer 500 is provided to maintain the wheel assembly 20 in the braked or unlocked state, and the pedal body 410 can return to a relatively high position where it can be pressed, under the action of the first reset member 610, without affecting the braked or unlocked state of the wheel assembly 20.

[0045] The brake mechanism 22 and the 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 pressing motion, the retainer 500 moves from the first position to the second position, and the second engaging portion 102 and the first engaging portion 101 (in this embodiment, the brake pin 320 and the brake hole 110) are locked and maintained engaged. That is, the hub 100 and the fixed base 200 are in a braking state, and the pedal assembly 400 is reset by the action of the first reset member 610, moving in the direction opposite to the first direction F1. 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 foot-pressing motion, the retainer 500 moves from the second position to the first position, and the engagement between the first engaging portion 101 and the second engaging portion 102 (in this embodiment, the brake hole 110 and the brake pin 320) is released. In other words, the hub 100 and the fixed base 200 are unlocked. The pedal assembly 400 is then reset again by the action of the first reset member 610, moving in the opposite direction to the first direction F1. Therefore, with the brake mechanism 22, operation is convenient as only the brake pedal needs to be pressed, regardless of braking or unlocking, and there is no risk of damaging the user's shoes.

[0047] The technical features of the above embodiments can be combined in any way. 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 considered to fall within the scope described herein, provided they are not contradictory.

[0048] The embodiments described above represent only a few embodiments of the present invention, and while the descriptions are specific and detailed, they cannot be understood as limiting the scope of the patent of the present invention. Those skilled in the art should note that further modifications and improvements can be made without departing from the concept of the present invention, and all such modifications and improvements are included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be in accordance with 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: Drive Member 311: Storage groove 312: Guide groove 320: Brake pin 321: Guidepost 330: Third reset component 340: Fourth reset component 400: Pedal Assembly 410: Pedal body 411: Stepped surface 420: Rotating Frame 421: Mounting hole 430: Driven inclined surface 440: First contact structure 441: Contact body 442: First contact part 451: First side 452: The second side 500: Retainer 510: Retaining frame 520: First pressing part 530: Second pressing part 540: Connection part 550: Second contact structure 551: Second contact body 552: Protective sleeve 610: First reset member 620: Second reset component 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 part 102: Second engaging part

Claims

1. A hub (100) having a first engaging portion (101), A fixing base (200) fixed to the hub (100), the fixing base (200) having a second engaging portion (102) that can engage with the first engaging portion (101) and lock, A retainer (500) having a first position and a second position, wherein when the retainer (500) is in the first position, the second engaging portion (102) is maintained in a state disengaged from the first engaging portion (101), and when the retainer (500) is in the second position, the second engaging portion (102) is maintained in a state engaged with the first engaging portion (101) and locked, The retainer (500) is movably disposed on the fixed base (200), and the direction of movement of the retainer (500) intersects with the direction of movement of the second engaging portion (102). When the retainer (500) is in the second position, the retainer (500) acts on the second engaging portion (102), causing the second engaging portion (102) to move in a direction closer to the first engaging portion (101). Brake mechanism (22).

2. The aforementioned brake mechanism (22) further includes, A pedal assembly (400) wherein, when the retainer (500) is in the first position and a force along the 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, The brake mechanism (22) according to claim 1, further comprising a first reset member (610) that keeps the pedal assembly (400) moving in a direction opposite to the first direction.

3. The brake mechanism (22) according to claim 2, wherein the pedal assembly (400) includes a pedal body (410) and a drive inclined surface (430) connected to each other, and 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 inclined surface (430) moves along the first direction, driving the second engaging portion (102) to engage with the first engaging portion (101) and lock.

4. The brake mechanism (22) according to claim 2, further comprising a second reset member (620) for maintaining the retainer (500) in a state moved toward the second position.

5. The brake mechanism (22) according to claim 1, wherein the first engaging portion (101) is a brake hole (110) disposed in the hub (100), and the second engaging portion (102) is a brake pin (320) movably disposed in the fixed base (200), and the brake pin (320) is insertable into the brake hole (110).

6. The brake mechanism (22) according to claim 5, further comprising a drive member (310) positioned at the end of the brake pin (320) away from the brake hole (110), wherein the retainer (500) abuts against the end of the drive member (310) away from the brake hole (110) when the retainer (500) is in the second position.

7. The brake mechanism (22) according to claim 6, further comprising a third reset member (330) disposed around the brake pin (320), wherein both ends of the third reset member (330) abut against the fixed base (200) and the drive member (310), respectively.

8. The brake mechanism (22) according to claim 6, wherein the brake pin (320) comprises a guide post (321), the drive member (310) comprises a guide groove (312), the guide post (321) is inserted into the guide groove (312) and is slidable along the guide groove (312).

9. The brake mechanism (22) according to claim 6, further comprising a fourth reset member (340), wherein the drive member (310) has a housing groove (311), the brake pin (320) is movably disposed within the housing groove (311), and the two ends of the fourth reset member (340) abut against the brake pin (320) and the bottom of the housing groove (311), respectively.

10. The brake mechanism (22) according to claim 1, further comprising an indicator assembly (800) adapted such that a first indicator state is entered when the retainer (500) is in the first position, and a second indicator state is entered when the retainer (500) is in the second position.

11. The display assembly (800) further comprises a decorative cover (700) covering the fixed base (200), and includes a display window (810) positioned in the decorative cover (700) and an indicator (820) fixed to the retainer (500), wherein the indicator (820) has a first display area (821) and a second display area (822). The brake mechanism (22) according to claim 10, wherein the first display area (821) is aligned with the display window (810) when the retainer (500) is in the first position, and the second display area (822) is aligned with the display window (810) when the retainer (500) is in the second position.

12. A baby carrier comprising a wheel assembly (20) having a brake mechanism (22) according to any one of claims 1 to 11.

13. The baby carrier according to claim 12, further comprising a connecting member (30), two wheel assemblies (20), each of the two wheel assemblies (20) comprising the brake mechanism (22), and the two ends of the connecting member (30) being connected to the pedal assemblies (400) of the two wheel assemblies (20), respectively.

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