Brake mechanism, brake system, and child carrier

Abstract

Provision of braking mechanisms, braking systems, and child carriers. A brake mechanism configured to lock a first wheel includes a first pedal having a first pop-up position and a first retracted position, one of the first pop-up position and the first retracted position corresponding to a locked state of the brake mechanism and the other of the first pop-up position and the first retracted position corresponding to an unlocked state of the brake mechanism, and a second pedal operatively connected to the first pedal and having a second pop-up position and a second retracted position, such that when the first pedal is in the first retracted position, the second pedal is in the second pop-up position, and when the second pedal is in the second retracted position, the first pedal is in the first pop-up position.

Description

[Technical Field]

[0001] This application claims priority to Chinese Patent Application No. 202211216663.8, filed on September 30, 2022, the entire contents of which are incorporated herein by reference. The present disclosure relates to the technical field of brakes, in particular to brake mechanisms, brake systems, and child carriers. [Background technology]

[0002] Strollers are typically equipped with a brake mechanism that is used to lock the wheels to prevent the stroller from moving unintentionally. A typical brake mechanism includes a brake pedal. When the stroller needs to be braked, the user presses the brake pedal, causing the brake pedal to pivot downward and the brake mechanism to enter a locked state, locking the wheels. Conversely, when the stroller needs to be moved, the user lifts the brake pedal with their foot, causing the brake pedal to pivot upward and the brake mechanism to enter an unlocked state, releasing the wheels. Summary of the Invention

[0003] SUMMARY OF THE INVENTION An object of the present invention is to provide a brake mechanism, a brake system, and a child carrier that are easy to apply and release the brakes.

[0004] In one aspect, the present disclosure provides a brake mechanism configured to lock a first wheel. The brake mechanism includes a first pedal having a first pop-up position and a first retracted position, a second pedal, one of the first pop-up position and the first retracted position corresponding to a locked state of the brake mechanism and the other of the first pop-up position and the first retracted position corresponding to an unlocked state of the brake mechanism, and a second pedal operably connected to the first pedal, having a second pop-up position and a second retracted position. When the first pedal is in the first retracted position, the second pedal is in the second pop-up position, and when the second pedal is in the second retracted position, the first pedal is in the first pop-up position.

[0005] In one embodiment, the first pedal is movable in a linear direction and the second pedal is sleeved onto and rotatable about a first pivot shaft.

[0006] In one embodiment, the first pedal includes a first pressing portion and the second pedal includes a second pressing portion, and when the first pedal moves from the first pop-up position to the first storage position, the first pressing portion abuts the second pressing portion, causing the second pedal to move from the second storage position to the second pop-up position.

[0007] In one embodiment, the brake mechanism further includes a limiting structure configured to lock the first pedal in the first pop-up position, and when the second pedal moves toward the second retracted position, the second pedal actuates the first pedal to unlock from the limiting structure.

[0008] In one embodiment, the brake mechanism further includes a first resilient member configured to drive the first pedal to move from the first retracted position to the first pop-up position, and / or a second resilient member configured to drive the second pedal to rotate from the second pop-up position to the second retracted position.

[0009] In one embodiment, the direction of movement of the first pedal is perpendicular to the axial direction of the first pivot shaft.

[0010] In one embodiment, the first pedal further comprises a first treading portion and a main body portion connected to the first treading portion, and the first pressing portion comprises an elastic arm extending from the main body portion, the elastic arm extending obliquely with respect to the direction of movement of the first pedal.

[0011] In one embodiment, the second pedal further includes a second foot and a pivoting portion connected to the second foot. The pivoting portion is sleeved onto the first pivot shaft. The second pressing portion includes a bearing plate extending from the pivoting portion. A plane in which the bearing plate is disposed intersects a plane in which the second foot is disposed.

[0012] In one embodiment, the resilient arm includes a protruding block that pushes against and rotates the bearing plate.

[0013] In one embodiment, the brake mechanism further includes a limiting step. When the first pedal is in the first storage position, the limiting step engages with the elastic arm to lock the first pedal in the first storage position and hold the second pedal in the second pop-up position. When the second pedal moves toward the second storage position, the second pressing portion elastically deforms the elastic arm so that the elastic arm disengages from the limiting step.

[0014] In one embodiment, the resilient arm includes an inclined wall and an end wall. A protruding block is disposed on the inclined wall. When the first pedal moves toward the first storage position, the inclined wall abuts against the limiting step, allowing the protruding block to abut against the second pressing portion. When the first pedal is in the first storage position, the end wall engages with the limiting step.

[0015] In one embodiment, the brake mechanism further includes a first rotating plate sleeved on the second pivot shaft, an end wall of the first rotating plate including a first inclined portion extending circumferentially, a first inclined portion including a first protruding end and a first avoiding end, and a first locking pin parallel to the second pivot shaft and abutting the first inclined portion. When the first locking pin abuts the first protruding end, the first locking pin is in an extended position. When the first locking pin abuts the first avoiding end, the first locking pin is in a retracted position. When the first pedal moves between the first pop-up position and the first retracted position, the first rotating plate rotates accordingly, and the first locking pin selectively abuts the first protruding end and the first avoiding end.

[0016] In one embodiment, when the first pedal moves from the first pop-up position to the first retracted position, the first pedal drives the first rotating plate to rotate in a first direction. The brake mechanism further includes a third elastic member. When the first pedal moves from the first retracted position to the first pop-up position, the third elastic member drives the first rotating plate to rotate in a second direction. The second direction is opposite to the first direction.

[0017] In one embodiment, the first pedal is movable in the radial direction of the second pivot shaft, and one of the first pedal and the first rotating plate is provided with a transmission portion, and the other of the first pedal and the first rotating plate is provided with a transmission surface, the transmission surface being inclined with respect to the direction of movement of the first pedal, and the transmission portion abutting against the transmission surface.

[0018] In one embodiment, the first pedal further includes a first step portion and a body portion connected to the first step portion. The transmission portion protrudes outward from the body portion. The first rotating plate includes a disk-shaped body and a push rod arranged coaxially with the disk-shaped body. The disk-shaped body includes a blocking portion. The push rod is sandwiched between the transmission portion and the blocking portion. A transmission surface is formed on the push rod.

[0019] In one embodiment, the first pedal and the second pedal are movable in a linear direction, the first pedal is connected to the second pedal by a connecting rod, and an intermediate portion of the connecting rod is pivotally connected to the pivot base.

[0020] In another aspect, a braking system is provided. The braking system includes an auxiliary braking mechanism, a traction member, and the above-described braking mechanism. The first rotating plate is operably connected to the auxiliary braking mechanism via the traction member. The auxiliary braking mechanism is configured to lock the second wheel.

[0021] In one embodiment, a first end of the towing member is provided with a connection head, and a second end of the towing member is connected to an auxiliary brake mechanism. The brake mechanism is provided with a slide slot in which the connection head is slidably mounted. The slide slot has a radially outer end and a radially inner end. The connection head is movably connected to the first rotating plate. When the first rotating plate rotates, the connection head can move between the radially outer end and the radially inner end of the slide slot.

[0022] In one embodiment, the first rotating plate is provided with a recess configured to receive the connection head, the recess being provided with an abutting wall that slidably fits with the connection head.

[0023] In one embodiment, the auxiliary brake mechanism includes a second rotating plate sleeved onto the third pivot shaft, an end wall of the second rotating plate including a second inclined portion extending circumferentially, the second inclined portion including a second protruding end and a second avoiding end, and a second locking pin parallel to the third pivot shaft and abutting the second inclined portion. When the second locking pin abuts the second protruding end, the second locking pin is in an extended position and locks the second wheel. When the second locking pin abuts the second avoiding end, the second locking pin is in a retracted position and unlocks the second wheel. The second end of the traction member is connected to the second rotating plate. When the connecting head moves between the radially outer end and the radially inner end of the slide slot, the second rotating plate rotates accordingly, and the second locking pin selectively abuts the second protruding end and the second avoiding end.

[0024] In yet another aspect, an embodiment of the present disclosure further provides a child carrier including a movable frame and the above-described brake mechanism provided on the movable frame or the above-described brake system provided on the movable frame.

[0025] In order to more clearly describe the embodiments of the present invention or the technical solutions of the prior art, the accompanying drawings illustrating the embodiments or the prior art are briefly introduced below. Obviously, the accompanying drawings in the following description are only a part of the embodiments of the present invention, and those skilled in the art can derive other drawings from the accompanying drawings without creative efforts. [Brief explanation of the drawings]

[0026] [Figure 1] FIG. 1 is a perspective view of a brake mechanism and a first wheel according to an embodiment of the present disclosure, with a first pedal in a first pop-up position and a second pedal in a second retracted position. [Figure 2] FIG. 2 is a perspective view of a brake mechanism and a first wheel according to an embodiment of the present disclosure, with a first pedal in a first retracted position and a second pedal in a second popped-up position. [Figure 3] FIG. 3 is a perspective view showing a brake mechanism and a first wheel separated from one another according to an embodiment of the present invention, with the first end cover omitted for ease of illustration, the first pedal in a first retracted position, and the second pedal in a second pop-up position. [Figure 4] FIG. 4 is an exploded view of a brake mechanism according to one embodiment of the present invention. [Figure 5] FIG. 5 is a perspective view of a brake mechanism and a first wheel according to an embodiment of the present disclosure, with the first end cover omitted for ease of illustration, the first pedal in a first pop-up position, and the second pedal in a second retracted position. [Figure 6] FIG. 6 is a perspective view of a first pedal and a first rotating plate of a brake mechanism according to an embodiment of the present invention. [Figure 7] FIG. 7 is a cross-sectional view of a brake mechanism according to an embodiment of the present disclosure, with a first pedal in a first pop-up position and a second pedal in a second retracted position. [Figure 8] FIG. 8 is a cross-sectional view of a brake mechanism according to an embodiment of the present disclosure, showing the first pedal moving toward the first retracted position. [Figure 9] FIG. 9 is a cross-sectional view of a brake mechanism according to an embodiment of the present disclosure, with a first pedal in a first, stored position and a second pedal in a second, popped-up position. [Figure 10] FIG. 10 is a perspective view of a brake mechanism according to an embodiment of the present disclosure, with the intermediate housing and second end cover omitted for ease of illustration, the first pedal in a first pop-up position, and the first locking pin in a retracted position. [Figure 11]FIG. 11 is a perspective view of a brake mechanism according to an embodiment of the present disclosure, with the mid-housing and second end cover omitted for ease of illustration, the first pedal in a first retracted position, and the first locking pin in an extended position. [Figure 12] FIG. 12 is a perspective view of an embodiment of the brake system according to the present invention, showing the auxiliary brake mechanism, the second wheel, and the movable frame separated from one another, with the second locking pin in a retracted position. [Figure 13] FIG. 13 is a perspective view of an embodiment of the brake system with the auxiliary brake mechanism, the second wheel, and the movable frame separated from one another, and with the second locking pin in an extended position. DETAILED DESCRIPTION OF THE INVENTION

[0027] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to illustrate the present invention and do not limit the protection scope of the present invention.

[0028] When a component is described as being "fixed" to another component, the component may be directly attached to the other component, or there may be intermediate components present. When a component is described as being "connected" to another component, the component may be directly attached to the other component, or there may also be intermediate components present. Terms such as "vertical," "horizontal," "left," "right," and similar expressions are used herein for descriptive purposes only and are not intended to represent the only embodiment.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terms used in the description of this disclosure are for the purpose of describing particular embodiments only and are not intended to be limiting of the disclosure. As used herein, the term "and / or" includes any combination of one or more of the associated listed items.

[0030] 1 to 4, a brake mechanism 100 according to an embodiment of the present invention is shown. The brake mechanism 100 is configured to lock a first wheel 91. The first wheel 91 may be, for example, the right rear wheel of a stroller. Although the brake mechanism 100 of this embodiment has been described as being applied to a stroller, it is understood that the disclosure of the brake mechanism 100 is not limited to strollers, and the brake mechanism 100 may also be applied to other child carriers with movable frames, supermarket carts, and other products.

[0031] 1 to 4, the brake mechanism 100 includes a first pedal 1, a second pedal 2, and a housing 3. The first pedal 1 and the second pedal 2 can be attached to the housing 3. The housing 3 can be attached to a rear leg frame 93 of a movable frame. FIGS. 12 and 13 show the rear leg frame 93 and a second wheel 92 attached to the rear leg frame 93. The second wheel 92 is, for example, the left rear wheel. The rear leg frame 93 is substantially symmetrical in the left-right direction. In some embodiments, the housing 3 includes, for example, a first end cover 31, a middle housing 33, and a second end cover 32. The middle housing 33 is connected to the rear leg frame 93. The first end cover 31 is attached to one end of the middle housing 33. The second end cover 32 is attached to the other end of the middle housing 33. In other embodiments, the configuration of the housing 3 is not limited to the above, and the housing 3 can be implemented in various ways as needed.

[0032] 1 and 2, the first pedal 1 has a first pop-up position and a first retracted position. As the first pedal 1 moves between the first pop-up position and the first retracted position, a first locking pin 61 of the brake mechanism 100 (see FIG. 3) moves between an extended position and a retracted position, and the brake mechanism 100 switches between a locked state and an unlocked state accordingly. Referring to FIG. 3, in some embodiments, the first locking pin 61 retractably extends through a hole (not shown) in the second end cover 32. When the first pedal 1 is depressed to the first retracted position under a first pressure P1, the first locking pin 61 is driven to the extended position, where it extends from the second end cover 32 and engages with a locking portion 910 (which may be a hole or a groove) of the first wheel 91, and the brake mechanism 100 enters a locked state in which the first wheel 91 is locked. On the other hand, when the first pedal 1 returns to the first pop-up position, the first lock pin 61 returns to the extended position, in which case the first lock pin 61 extends relative to the second end cover 32, disengaging from the lock portion 910 of the first wheel 91, and the brake mechanism 100 enters an unlocked state in which the lock on the first wheel 91 is released.

[0033] In some alternative embodiments, when the first pedal 1 is in the first pop-up position, the first locking pin 61 is in the extended position and engages the locking portion of the first wheel 91, and the brake mechanism 100 is in a locked state. When the first pedal 1 is in the first retracted position, the first locking pin 61 is in the retracted position and disengages from the locking portion of the first wheel 91, and the brake mechanism 100 is in an unlocked state.

[0034] Continuing to refer to FIGS. 1 and 2, the second pedal 2 has a second pop-up position and a second storage position, and the second pedal 2 is operatively connected to the first pedal 1. When the first pedal 1 moves from the first pop-up position to the first storage position, for example, a first pressure P1 is applied, and the movement of the first pedal 1 moves the second pedal 2 from the second storage position to the second pop-up position. When the first pedal 1 is in the first storage position, the second pedal 2 is in the second pop-up position. In contrast, when the second pedal 2 is depressed under a second pressure P2, the second pedal 2 moves from the second pop-up position to the second storage position, and the movement of the second pedal 2 moves the first pedal 1 from the first storage position to the first pop-up position. When the second pedal 2 is in the second storage position, the first pedal 1 is in the first pop-up position. It should be noted that the term "operatively connected" in the embodiments of the present disclosure includes, but is not limited to, direct connection, indirect connection, fixed connection, pivotal connection, compressive contact, etc. When two parts are operatively connected to each other, it means that movement of one of the two parts can cause movement of the other of the two parts.

[0035] When the brake mechanism 100 according to the embodiment of the present invention locks or unlocks the first wheel 91, the first pedal 1 or the second pedal 2 can be depressed accordingly, eliminating the need to lift the foot onto the first pedal 1 or the second pedal, and preventing injury to the instep or toes of the user. The depression method is more in line with the user's lifestyle, is convenient for the user to apply force, and provides a better user experience.

[0036] In some embodiments, the first pedal 1 and the second pedal 2 can be operatively connected to each other by any suitable intermediate structure, and the first pedal 1 and the second pedal 2 are operatively connected such that a change in the position of one of the first pedal 1 and the second pedal 2 causes an opposite change in the position of the other of the first pedal 1 and the second pedal 2. For example, in other embodiments, both the first pedal 1 and the second pedal 2 are moved in a linear direction, the direction of movement of the first pedal 1 is parallel to the direction of movement of the second pedal 2, and the first pedal 1 is connected to the second pedal 2 by a connecting rod. An intermediate portion of the connecting rod is pivotally connected to a pivot base. The pivot base can be fixed within the housing 3. As a result, when the first pedal 1 is depressed and retracted upon application of a pedaling force, the connecting rod pivots, causing the second pedal 2 to move upward and pop up. Similarly, when the second pedal 2 is depressed and retracted upon application of a pedaling force, the connecting rod pivots, causing the first pedal 1 to move upward and pop up. In other words, when the first pedal 1 moves from the first pop-up position to the first storage position, the first pedal 1 causes the second pedal 2 to move from the second storage position to the second pop-up position.

[0037] 1, 2, and 4, in some embodiments, an opening 330 is provided in the intermediate housing 33 of the housing 3. The first pedal 1 extends through the opening 330. The first pedal 1 moves linearly to a first pop-up position or a first retracted position. In some embodiments, the movement direction of the first pedal 1 is, for example, up and down. The first end cover 31 of the housing 3 is provided with a first pivot shaft 301. The second pedal 2 is sleeved on the first pivot shaft 301, and the second pedal 2 rotates around the first pivot shaft 301 to a second pop-up position or a second retracted position. In some embodiments, the first pivot shaft 301 is horizontally disposed, and the movement direction of the first pedal 1 is perpendicular to the axial direction of the first pivot shaft 301. The linearly moving first pedal 1 and the pivotally moving second pedal 2 can be driven by directly contacting each other, which is advantageous for the overall layout and compact configuration of the brake mechanism.

[0038] 5 , in some embodiments, the first pedal 1 may include a first pressing portion 11, and the second pedal 2 may include a second pressing portion 21. When the first pedal 1 receives a first pressure P1 and moves from the first pop-up position to the first storage position, the first pressing portion 11 abuts against the second pressing portion 21, thereby moving the second pedal 2 from the second storage position to the second pop-up position. In contrast, when the second pedal 2 receives a second pressure P2 and moves from the second pop-up position to the second storage position, the second pressing portion 21 may act on the first pressing portion 11 to help the first pedal 1 move from the first storage position to the first pop-up position.

[0039] FIG. 6 shows an exemplary configuration of the first pressing portion 11. The first pedal 1 further includes a first stepping portion 12 and a body portion 13 connected to the first stepping portion 12. The first stepping portion 12 is disposed outside the housing 3 and configured to receive a first pressure P1. The body portion 13 protrudes into the housing 3 through an opening 330. The first pressing portion 11 includes elastic arms 111 extending from the body portion 13. The elastic arms 111 extend obliquely with respect to the direction of movement of the first pedal 1. In some embodiments, the number of elastic arms 111 can be set as needed. In some embodiments, the lower ends of the elastic arms 111 engage with the body portion 13, and the upper ends of the elastic arms 111 are spaced apart from the body portion 13. When a first pressure P1 is applied to the first pedal 1 in the first pop-up position, the upper end of the elastic arm 111 comes into contact with the second pressing portion 21 of the second pedal 2, causing the second pedal 2 to rotate around the first pivot shaft 301. This allows the second pedal 2 to move from the second stored position to the second pop-up position.

[0040] FIG. 5 shows an example configuration of the second pressing portion 21. The second pedal 2 further includes a second stepping portion 22 and a pivot portion 23 connected to the second stepping portion 22. The second stepping portion 22 is configured to receive a second pressure P2, and the pivot portion 23 is sleeved onto the first pivot shaft 301. The second pressing portion 21 includes a bearing plate 211 extending from the pivot portion 23. The plane on which the bearing plate 211 is located intersects the plane on which the second stepping portion 22 is located. In some embodiments, the plane on which the bearing plate 211 is located is perpendicular or nearly perpendicular to the plane on which the second pedal 22 is located. When the elastic arm 111 moves downward, the elastic arm 111 directly presses the bearing plate 211 to rotate it about the first pivot shaft 301, thereby moving the second pedal 2 to the second pop-up position. In some embodiments, a protruding block 1113 can be provided at the upper end of the elastic arm 111. When the elastic arm 111 moves downward together with the first pedal 1, the protruding block 1113 catches on the bearing plate 211, allowing the bearing plate 211 to be easily pushed and rotated.

[0041] 9, when the second pedal 2 is in the second pop-up position, the second foot 22 of the second pedal 2 is approximately parallel to the ground, and when a second pressure P2 is applied to the second pedal 2 from top to bottom, the second pedal 2 rotates downward about the first pivot shaft 301 to the second stored position. In some embodiments, when the second pedal 2 is in the second pop-up position, the second foot 22 may be inclined relative to the ground. Referring to FIG. 1, in some embodiments, the second pedal 2 in the second stored position may be attached to the first end cover 31.

[0042] In some embodiments, the brake mechanism 100 may further include a limiting structure (e.g., limiting step 316 below). When the first pedal 1 receives a first pressure P1 and moves from the first pop-up position to the first storage position, the limiting structure can lock the first pedal 1 in the first storage position. In this case, the first pressing portion 11 abuts against the second pressing portion 21 to hold the second pedal 2 in the second pop-up position. When the second pedal 2 receives a second pressure P2 and moves from the second pop-up position to the second storage position, the second pedal 2 drives the first pedal 1 to unlock from the limiting structure, allowing the first pedal 1 to move to the first pop-up position.

[0043] 4 and 5, in some embodiments, the brake mechanism 100 may further include a first elastic member 51. The first elastic member 51 may be attached, for example, between the housing 3 and the first pedal 1 and may be actuated to move the first pedal 1 from the first retracted position to the first pop-up position. In this manner, when the first pedal 1 is unlocked from the restricting structure, it may automatically move to the first pop-up position. In some embodiments, the brake mechanism 100 may further include a second elastic member 52. The second elastic member 52 is configured to move the second pedal 2 from the second pop-up position to the second retracted position. The second elastic member 52 may be, for example, a torsion spring, sleeved onto the first pivot shaft 301 and connected to the first end cover 31 and the second pedal 2, respectively. When the second pedal 2 in the second pop-up position is rotated downward under the second pressure P2, after the first pedal 1 is unlocked from the restricting structure, even if the second pressure P2 is removed, the second pedal 2 can automatically move to the second storage position due to the action of the elastic member 52, and the second pedal 2 is held in the second storage position without random shaking.

[0044] The limiting structure can be implemented in various ways as long as it can achieve the above-described function of locking or unlocking the first pedal 1. Referring to FIGS. 7 to 9 , in some embodiments, the limiting structure includes, for example, a limiting step 316. The limiting step 316 can be disposed on the inner wall of the first end cover 31. When the first pedal 1 is in the first storage position, the limiting step 316 engages with the elastic arm 111 to lock the first pedal 1 in the first storage position, and the second pedal 2 is accordingly maintained in the second pop-up position. When the second pedal 2 moves toward the second storage position, the bearing plate 211 of the second pressing portion 21 elastically deforms the elastic arm 111, causing the elastic arm 111 to disengage from the limiting step 316, i.e., the lock of the elastic arm 111 by the limiting step 316 is released.

[0045] Referring to FIG. 6 , in some embodiments, the elastic arm 111 includes an inclined wall 1111 and an end wall 1112. The aforementioned protruding block 1113 is disposed on a portion of the inclined wall 1111. Referring to FIG. 8 , while the first pedal 1 is moving from the first pop-up position to the first storage position, the inclined wall 1111 abuts against the limiting step 316, allowing the protruding block 1113 to abut against the bearing plate 211 of the second pressing portion 21, causing the second pedal 2 to rotate toward the second pop-up position. Referring to FIG. 9 , when the first pedal 1 is in the first storage position, the inclined wall 1111 extends beyond the limiting step 316, causing the elastic arm 111 to rebound, and the end wall 1112 engages with the limiting step 316, locking the first pedal 1 in the first storage position. In this case, the protruding block 1113 and the bearing plate 211 of the second pressing portion 21 come into contact with each other, and the second pedal 2 is held in the second pop-up position. When the second pedal 2 moves from the second pop-up position to the second retracted position, the second pressing portion 21 presses the protruding block 1113, the elastic arm 111 is deformed in a direction approaching the main body 13, the end wall 1112 easily disengages from the limiting step 316, and the first pedal 1 automatically moves to the first pop-up position by the action of, for example, the first elastic member 51.

[0046] 10 and 11 show an example configuration in which the first pedal 1 drives the first lock pin 61 to move. The brake mechanism 100 further includes a first rotating plate 41. The first rotating plate 41 is fitted to the second pivot shaft 302 (see FIG. 4) through its central hole 410. The second pivot shaft 302 is, for example, a hollow shaft formed in the intermediate housing 33. The central shaft 911 (see FIG. 3) of the first wheel 91 passes through the hole 320 (see FIGS. 7 to 9) in the second end cover 32 and the second pivot shaft 302. The end wall of the first rotating plate 41 includes a first inclined portion 401 extending in the circumferential direction. The first inclined portion 401 includes a first protruding end 4011 and a first avoiding end 4012. The first protruding end 4011 and the first avoiding end 4012 have different heights in the axial direction. The first lock pin 61 is parallel to the second pivot shaft 302 and abuts against the first inclined portion 401. When the first pedal 1 moves between the first pop-up position and the first retracted position, the first rotating plate 41 is rotated, and one end of the first lock pin 61 selectively abuts against the first protruding end 4011 and the first escape end 4012. When the first lock pin 61 abuts against the first protruding end 4011, the first lock pin 61 is pushed into the extended position, and the first wheel 91 is locked. Conversely, when the first lock pin 61 abuts against the first escape end 4012, the first lock pin 61 is in the retracted position, and the first wheel 91 is unlocked.

[0047] 10 and 11 , in some embodiments, when the first pedal 1 is in the first pop-up position, the first avoidance end 4012 abuts against the first locking pin 61, and the first locking pin 61 unlocks the first wheel 91. When the first pedal 1 is in the first retracted position, the first outward protruding end 4011 abuts against the first locking pin 61, and the first locking pin 61 locks the first wheel 91.

[0048] In another embodiment, the correlation between the change in position of the first pedal 1 and the change in state of the brake mechanism 100 can be changed by changing the direction of the first inclined portion 401 and exchanging the position of the first protruding end 4011 with the position of the first avoiding end 4012 of the first inclined portion 401. For example, when the first pedal 1 is in the first pop-up position, the first protruding end 4011 abuts against the first lock pin 61, which locks the first wheel 91, and the brake mechanism 100 is in the locked state. When the first pedal 1 is in the first retracted position, the first avoiding end 4012 abuts against the first lock pin 61, which unlocks the first wheel 91, and the brake mechanism 100 is in the unlocked state.

[0049] In some embodiments, a first elastic reset member (not shown) may further be provided between the first lock pin 61 and the housing 3. The first elastic reset member exerts an elastic force on the first lock pin 61, allowing the first lock pin 61 to abut against the first inclined portion 401 of the first rotating plate 41. The first elastic reset member is, for example, a spring attached between the step 611 (see FIG. 10 ) of the first lock pin 61 and the second end cover 32.

[0050] 6, 10, and 11, in some embodiments, when the first pedal 1 moves from the first pop-up position to the first storage position, the first pedal 1 drives the first rotating plate 41 to rotate in a first direction T1. The brake mechanism 100 may further include a third elastic member 53. When the first pedal 1 moves from the first storage position to the first pop-up position, the third elastic member 53 drives the first rotating plate 41 to rotate in a second direction T2. ​​The first direction T1 is opposite to the second direction T2. ​​The third elastic member 53 may be, for example, a torsion spring and may be sleeved onto the second pivot shaft 302. Two spring arms of the torsion spring may be connected to the first rotating plate 41 and the second end cover 32, respectively. Furthermore, by rotating the first rotating plate 41, the first locking pin 61 selectively abuts against the first protruding end 4011 and the first avoidance end 4012, and the first locking pin 61 can lock or unlock the first wheel 91.

[0051] FIG. 6 shows an example of a configuration in which the first pedal 1 rotates the first rotating plate 41. The first pedal 1 moves in the radial direction of the second pivot shaft 302. The main body 13 of the first pedal 1 may be provided with a transmission part 131 that protrudes outward. The first rotating plate 41 is provided with a transmission surface 4121. The transmission surface 4121 is inclined with respect to the direction of movement of the first pedal 1. For example, the transmission part 131 remains in contact with the transmission surface 4121 due to the action of the third elastic member 53 (see FIGS. 10 and 11). When the first pedal 1 receives a first pressure P1 and moves to the first storage position, the transmission part 131 presses the transmission surface 4121, causing the first rotating plate 41 to rotate in the first direction T1. Conversely, when the first pressure P1 is removed and the first pedal 1 is unlocked from the restricting structure, the third elastic member 53 drives the first rotating plate 41 to rotate in the second direction T2, and in this case, the transmission surface 4121 drives the first pedal 1 to move toward the first pop-up position via the transmission part 131. It should be understood that when the third elastic member 53 drives the first pedal 1 to move from the first stored position to the first pop-up position, the above-mentioned first elastic member 51 can be omitted.

[0052] In other embodiments, the position of the transmission part 131 on the first pedal 1 is interchangeable with the position of the transmission surface 4121 on the first rotating plate 41, as long as movement of one of the first pedal 1 and the first rotating plate 41 can drive corresponding movement of the other of the first pedal 1 and the first rotating plate 41.

[0053] 4 and 6 show exemplary configurations of the first rotating plate 41. In some embodiments, the first rotating plate 41 includes a disk-shaped body 411 and a push rod 412 arranged coaxially with the disk-shaped body 411. A central hole in the disk-shaped body 411 allows the second pivot shaft 302 to pass through. One end of the push rod 412 is sleeved onto the second pivot shaft 302 through a hole 4120. The first inclined portion 401 is arranged, for example, on a first end wall of the disk-shaped body 411. A blocking portion 4110 is included on a second end wall of the disk-shaped body 411. The push rod 412 is sandwiched between the blocking portion 4110 and the transmission portion 131 of the first pedal 1. A transmission surface 4121 is formed on the push rod 412. Dividing the first rotating plate 41 into the disk-shaped body 411 and the push rod 412 allows both the disk-shaped body 411 and the push rod 412 to be manufactured relatively easily, which is beneficial in reducing the difficulty of manufacturing the first rotating plate 41. In some alternative embodiments, the push rod 412 can be omitted, and the transmission surface 4121 may be formed directly on the disk-shaped body 411.

[0054] 4 and 6 , in some embodiments, the main body 13 is provided with a first guide hole 1301. The second pivot shaft 302 is slidably fitted into the first guide hole 1301 to limit the travel distance of the first pedal 1. In addition, the main body 13 may further be provided with a second guide hole 1302. A guide rod 3302 may be disposed in the opening 330. The guide rod 3302 is slidably fitted into the second guide hole 1302. Cooperation between the second pivot shaft 302 and the first guide hole 1301 and cooperation between the guide rod 3302 and the second guide hole 1302 can guide the linear movement of the first pedal 1. In other embodiments, the opening 330 may be slidably attached to the main body 13, and the main body 13 may not be provided with a second guide hole 1302. 4 and 5, the first elastic member 51 may be disposed between the guide rod 3302 and the first stepping portion 12. Enabling linear movement of the first pedal 1 can be achieved in other ways, and is not limited to these.

[0055] The operating principle of the brake mechanism 100 of the above embodiment will now be briefly described.

[0056] 1. When the brake mechanism 100 is in an unlocked state, the first pedal 1 is in the first pop-up position, the second pedal 2 is in the second storage position, and the first avoidance end 4012 of the first rotating plate 41 is in contact with the first lock pin 61, the first lock pin 61 is disengaged from the lock portion 910 of the first wheel 91.

[0057] 2. When the brake mechanism 100 needs to be switched from the unlocked state to the locked state, the first pedal 1 is depressed downward. The first pedal 1 moves downward under the action of the first pressure P1, and the transmission portion 131 of the first pedal 1 presses the transmission surface 4121 of the push rod 412. The push rod 412 receives the force and rotates, driving the disk-shaped body 411 to rotate in the first direction T1. The first inclined portion 401 of the disk-shaped body 411 presses the first lock pin 61 toward the lock portion 910. During the downward movement of the first pedal 1, the protruding block 1113 of the elastic arm 111 presses the upper surface of the bearing plate 211 of the second pedal 2, causing the second pedal 2 to rotate upward around the first pivot shaft 301. As the first pedal 1 moves downward, the end wall 1112 of the elastic arm 111 engages with the limiting step 316. The first pressure P1 is removed, the first pedal 1 is held in the first storage position, the protruding block 1113 remains in contact with the bearing plate 211, and the second pedal 2 is held in the second pop-up position. The first protruding end 4011 of the first inclined portion 401 abuts against the first lock pin 61, and the first lock pin 61 engages with the lock portion 910 of the first wheel 91.

[0058] 3. When the brake mechanism 100 needs to be switched from the locked state to the unlocked state, the second pedal 2 is depressed downward. The second pressure P2 causes the second pedal 2 to rotate downward around the first pivot shaft 301. The bearing plate 211 of the second pedal 2 presses the protruding block 1113 of the elastic arm 111, elastically deforming the elastic arm 111, and the end wall 1112 disengages from the restricting step 316. Even after the second pressure P2 is removed, the second pedal 2 can move to the second retracted position due to the action of the second elastic member 52, and the first pedal 1 can move to the first pop-up position due to the action of the first elastic member 51. In response, the disk-shaped body 411 rotates in the second direction T2 due to the action of the third elastic member 53, and the first lock pin 61 is pulled out of the lock portion 910 due to the action of the first elastic reset member. The rotation of the disk-shaped body 411 rotates the push rod 412. The transmission surface 4121 of the push rod 412 drives the transmission portion 131 of the first pedal 1, exerting a force on the first pedal 1 and moving the first pedal 1 toward the first pop-up position. When the first pedal 1 rises to the first pop-up position, the first avoidance end 4012 of the first inclined portion 401 abuts against the first lock pin 61, and the first lock pin 61 disengages from the lock portion 910 of the first wheel 91.

[0059] The present embodiment provides a dual pedal brake mechanism with a simple structure, and the brake mechanism 100 can be locked and unlocked by simply stepping on the corresponding pedal, improving user convenience.

[0060] 12 and 13, embodiments of the present invention further provide a brake system 1000 including an auxiliary brake mechanism 200 and the aforementioned brake mechanism 100. The first rotating plate 41 is operatively connected to the auxiliary brake mechanism 200 via a traction member 7. In some embodiments, when the brake mechanism 200 locks the first wheel 91, the first rotating plate 41 acts on the auxiliary brake mechanism 200 via the traction member 7, and the auxiliary brake mechanism 200 locks the second wheel 92, thereby achieving a dual brake function in one step.

[0061] 10 and 11 , in some embodiments, a first end of the towing member 7 is provided with a connection head 71, and a second end 72 of the towing member 7 is connected to the auxiliary brake mechanism 200. A slide slot 310 is disposed in the internal cavity of the housing 3. The slide slot 310 can be disposed, for example, in the first end cover 31. The slide slot 310 is slidably attached to the connection head 71. The slide slot 310 includes a radially outer end 3101 and a radially inner end 3102. The connection head 71 is movably connected to the first rotating plate 41. When the first rotating plate 41 rotates, the connection head 71 moves between the radially outer end 3101 and the radially inner end 3102 of the slide slot 310, driving the auxiliary brake mechanism 200 to lock or unlock the second wheel 92.

[0062] 12 and 13 , in some embodiments, the auxiliary brake mechanism 200 includes a second rotating plate 42 and a second lock pin 62. The second rotating plate 42 is fitted onto a third pivot shaft (not shown) through a central hole 420. The third pivot shaft is attached to, for example, the rear leg frame 93 of the movable frame. The third pivot shaft and the second wheel 92 are coaxially arranged. An end wall of the second rotating plate 42 includes a second inclined portion 402 extending in the circumferential direction. The second inclined portion 402 includes a second protruding end 4021 and a second avoiding end 4022. The second lock pin 62 is parallel to the third pivot shaft and abuts the second inclined portion 402. When the second lock pin 62 abuts the second protruding end 4021, the second lock pin 62 is in an extended position and locks the second wheel 92. When the second locking pin 62 abuts the second avoidance end 4022, the second locking pin 62 is in the retracted position and unlocks the second wheel 92.

[0063] The second end 72 of the traction member 7 is connected to the second rotating plate 42. When the connection head 71 moves between the radial outer end 3101 and the radial inner end 3102 of the slide slot 310, the second rotating plate 42 also rotates accordingly, and the second lock pin 62 selectively abuts against the second protruding end 4021 and the second avoiding end 4022.

[0064] 10 and 12 , in some embodiments, when the first pedal 1 is in the first pop-up position, the first lock pin 61 unlocks the first wheel 91. In this case, the connecting head 71 is at the radially outer end 3101 of the slide slot 310, the second avoidance end 4022 of the second rotating plate 42 abuts against the second lock pin 62, the second lock pin 62 disengages from the lock portion (not shown) of the second wheel 92, and the auxiliary brake mechanism 200 is in an unlocked state.

[0065] 11 and 13, when the first pedal 1 moves to the first storage position, the first rotating plate 41 drives the first lock pin 61 to lock the first wheel 91, and the first rotating plate 41 drives the connecting head 71 to move toward the radial inner end 3102 of the slide slot 310. In this case, the traction member 7 rotates the second rotating plate 42, and the second protruding end 4021 of the second inclined portion 402 abuts against the second lock pin 62, which is pressed to engage with the lock portion of the second wheel 92, and the auxiliary brake mechanism 200 enters a locked state.

[0066] The auxiliary brake mechanism 200 may further include a fourth elastic member (not shown). The fourth elastic member is, for example, a torsion spring and is connected to the second rotating plate 42. When the first pedal 1 moves to the first pop-up position, the fourth elastic member can rotate the second rotating plate 42, causing the second avoidance end 4022 of the second inclined portion 402 to abut against the second lock pin 62, unlocking the second wheel 92 and driving the connecting head 7 to move from the radially inner end 3102 to the radially outer end 3101 of the slide slot 310.

[0067] In some embodiments, the first rotating plate 41 includes a recess 417 configured to receive the connection head 71. The recess 417 includes an abutment wall 4171 that slidably fits with the connection head 71. The abutment wall 4171 has a non-radial surface. As the first rotating plate 41 rotates, the connection head 71 remains in abutment with the abutment wall 4171 and slides between the radially inner end 3102 and the radially outer end 3101 of the slide slot 310.

[0068] In some alternative embodiments, the direction of the second ramp portion 402 can be changed so that the position of the second protruding end 4021 is swapped with the position of the second avoiding end 4022 of the second ramp portion 402. In this way, when the connection head 71 is located at the radially outer end 3101 of the slide slot 310, the second protruding end 4021 of the second ramp portion 402 abuts the second locking pin 62. When the connection head 71 is located at the radially inner end 3102 of the slide slot 310, the second avoiding end 4022 of the second rotating plate 42 abuts the second locking pin 62.

[0069] A second elastic return member (not shown) may be further provided on the second lock pin 62. The second elastic return member exerts an elastic force on the second lock pin 62, allowing the second lock pin 62 to abut against the second inclined portion 402 of the second rotating plate 42.

[0070] The embodiment of the present disclosure further provides a child carrier including a movable frame and the brake mechanism 100 or brake system 200 described in the above embodiment provided on the movable frame. As mentioned above, the child carrier includes, but is not limited to, a stroller.

[0071] When the brake mechanism according to the above embodiment locks and unlocks the first wheel, the first pedal or the second pedal can be stepped on accordingly, and there is no need to lift the foot relative to the first pedal or the second pedal, so that the user's instep or toes will not be injured. The stepping down method is more suited to the user's lifestyle, is convenient for the user to apply force, and provides the user with a better usage experience.

[0072] The technical features of the above embodiments can be combined in any manner. For the sake of simplicity, not all possible combinations of the technical features of the above embodiments are described, but all combinations of these technical features should be considered within the scope of the present disclosure, provided that the combinations are not mutually inconsistent.

[0073] The above embodiments merely illustrate some embodiments of the present invention, and the descriptions are relatively specific and detailed. However, this should not be understood as limiting the patent scope of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and such modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be governed by the claims.

Claims

1. A brake mechanism (100) configured to lock a first wheel (91), comprising: The brake mechanism (100) comprises a first pedal (1) having a first pop-up position and a first storage position, one of the first pop-up position and the first storage position corresponding to a locked state of the brake mechanism (100), and the other of the first pop-up position and the first storage position corresponding to an unlocked state of the brake mechanism (100); a second pedal (2) operatively connected to the first pedal (1) and having a second pop-up position and a second retracted position; When the first pedal (1) is in the first storage position, the second pedal (2) is in the second pop-up position, and when the second pedal (2) is in the second storage position, the first pedal (1) is in the first pop-up position. Brake mechanism (100).

2. 2. The brake mechanism (100) of claim 1, wherein the first pedal (1) is movable in a linear direction, and the second pedal (2) is sleeved on a first pivot shaft (301) and is rotatable around the first pivot shaft (301).

3. 3. The brake mechanism (100) according to claim 1 or 2, wherein the first pedal (1) has a first pressing portion (11), the second pedal (2) has a second pressing portion (21), and when the first pedal (1) moves from the first pop-up position to the first storage position, the first pressing portion (11) abuts against the second pressing portion (21), thereby moving the second pedal (2) from the second storage position to the second pop-up position.

4. a limiting structure configured to lock the first pedal (1) in the first pop-up position; 4. The brake mechanism (100) of claim 1, wherein when the second pedal (2) moves toward the second storage position, the second pedal (2) drives the first pedal (1) to unlock from the limiting structure.

5. 5. The brake mechanism (100) of claim 1, further comprising: a first elastic member (51) configured to drive the first pedal (1) to move from the first storage position to the first pop-up position; and a second elastic member (52) configured to drive the second pedal (2) to rotate from the second pop-up position to the second storage position.

6. 6. A brake mechanism (100) according to claim 2, optionally in combination with any one of claims 3 to 5, wherein the direction of movement of the first pedal (1) is perpendicular to the axial direction of the first pivot shaft (301).

7. The brake mechanism (100) according to claim 3, optionally combined with any one of claims 4 to 6, wherein the first pedal (1) further comprises a first depression portion (12) and a main body portion (13) connected to the first depression portion (12), and the first pressing portion (11) comprises an elastic arm (111) extending from the main body portion (13), the elastic arm (111) extending obliquely with respect to the direction of movement of the first pedal (1).

8. 8. The brake mechanism (100) of claim 7, wherein the second pedal (2) further comprises a second stepping portion (22) and a pivoting portion (23) connected to the second stepping portion (22), the pivoting portion (23) being sleeved onto the first pivot shaft (301), the second pressing portion (21) comprising a bearing plate (211) extending from the pivoting portion (23), and a plane in which the bearing plate (211) lies intersects with a plane in which the second stepping portion (22) lies.

9. The brake mechanism (100) according to claim 8, wherein the resilient arm (111) comprises a protruding block (1113) that pushes the bearing plate (211) to rotate.

10. 10. The brake mechanism (100) according to claim 7, further comprising a limiting step (316), wherein when the first pedal (1) is in the first storage position, the limiting step (316) engages with the elastic arm (111), thereby locking the first pedal (1) in the first storage position and maintaining the second pedal (2) in the second pop-up position, and when the second pedal (2) moves toward the second storage position, the second pressing portion (21) elastically deforms the elastic arm (111), causing the elastic arm (111) to be released from the limiting step (316).

11. The brake mechanism (100) of claim 10, wherein the elastic arm (111) has an inclined wall (1111) and an end wall (1112), the inclined wall (1111) is provided with a protruding block (1113), and when the first pedal (1) moves toward the first storage position, the inclined wall (1111) abuts against the limiting step (316), allowing the protruding block (1113) to abut against the second pressing portion (21), and when the first pedal (1) is in the first storage position, the end wall (1112) engages with the limiting step (316).

12. Further comprising a first rotating plate (41) sleeved on the second pivot shaft (302); an end wall of the first rotating plate (41) having a first inclined portion (401) extending in a circumferential direction, the first inclined portion (401) having a first protruding end (4011) and a first avoiding end (4012); Further, a first lock pin (61) is provided which is parallel to the second pivot shaft (302) and abuts against the first inclined portion (401); When the first locking pin (61) abuts against the first protruding end (4011), the first locking pin (61) is in an extended position; When the first lock pin (61) abuts against the first avoidance end (4012), the first lock pin (61) is in a stored position; A brake mechanism (100) according to any one of claims 1 to 4, wherein when the first pedal (1) moves between the first pop-up position and the first storage position, the first rotating plate (41) rotates accordingly, and the first lock pin (61) selectively abuts the first protruding end (4011) and the first avoidance end (4012).

13. 13. The brake mechanism (100) according to claim 12, further comprising a third elastic member (53), wherein when the first pedal (1) moves from the first pop-up position to the first storage position, the first pedal (1) drives the first rotating plate (41) to rotate in a first direction (T1), and when the first pedal (1) moves from the first storage position to the first pop-up position, the third elastic member (53) drives the first rotating plate (41) to rotate in a second direction (T2) opposite to the first direction (T1).

14. A brake mechanism (100) as described in claim 12 or 13, wherein the first pedal (1) is movable in the radial direction of the second pivot shaft (302), one of the first pedal (1) and the first rotating plate (41) has a transmission part (131), the other of the first pedal (1) and the first rotating plate (41) has a transmission surface (4121), the transmission surface (4121) is inclined with respect to the direction of movement of the first pedal (1), and the transmission part (131) abuts against the transmission surface (4121).

15. The first pedal (1) further comprises a first stepping portion (12) and a main body portion (13) connected to the first stepping portion (12), the transmission portion (131) protruding outward from the main body portion (13), the first rotating plate (41) comprising a disk-shaped main body (411) and a push rod (412) arranged coaxially with the disk-shaped main body (411), the disk-shaped main body (411) comprising a blocking portion (4110), the push rod (412) being sandwiched between the transmission portion (131) and the blocking portion (4110), and the transmission surface (4121) being formed on the push rod (412). The brake mechanism (100) of claim 14.

16. 16. The brake mechanism (100) of any one of claims 1 to 15, wherein the first pedal (1) and the second pedal (2) are movable in a linear direction, the first pedal (1) is connected to the second pedal (2) by a connecting rod, and an intermediate portion of the connecting rod is pivotally connected to a pivot base.

17. A brake system (1000) comprising an auxiliary brake mechanism (200), a traction member (7), and the brake mechanism (100) according to any one of claims 12 to 15, wherein the first rotating plate (41) is operably connected to the auxiliary brake mechanism (200) via the traction member (7), and the auxiliary brake mechanism (200) is configured to lock the second wheel (92).

18. 18. The brake system (1000) of claim 17, wherein a first end of the traction member (7) is provided with a connection head (71), a second end (72) of the traction member (7) is connected to the auxiliary brake mechanism (200), the brake mechanism (100) is provided with a slide slot (310) into which the connection head (71) is slidably fitted, the slide slot (310) having a radially outer end (3101) and a radially inner end (3102), the connection head (71) is movably connected to a first rotating plate (41), and when the first rotating plate (41) rotates, the connection head (71) is movable between the radially outer end (3101) and the radially inner end (3102) of the slide slot (310).

19. 19. A brake system (1000) as described in claim 18, wherein the first rotating plate (41) has a recess (417) configured to receive the connection head (71), and the recess (417) has an abutment wall (4171) that slidably engages with the connection head (71).

20. The auxiliary brake mechanism (200) comprises a second rotating plate (42) sleeved on a third pivot shaft; an end wall of the second rotating plate (42), the end wall having a second inclined portion (402) extending in a circumferential direction, the second inclined portion (402) having a second protruding end (4021) and a second avoidance end (4022); a second lock pin (62) parallel to the third pivot shaft and abutting the second inclined portion (402); When the second locking pin (62) abuts against the second protruding end (4021), the second locking pin (62) is in an extended position and locks the second wheel (92), and when the second locking pin (62) abuts against the second avoidance end (4022), the second locking pin (62) is in a stored position and unlocks the second wheel (92); A brake system (1000) according to claim 18 or 19, wherein the second end (72) of the traction member (7) is connected to the second rotating plate (42), and when the connection head (71) moves between the radially outer end (3101) and the radially inner end (3102) of the slide slot (310), the second rotating plate (42) rotates accordingly, and the second lock pin (62) selectively abuts against the second protruding end (4021) and the second avoidance end (4022).

21. A child carrier comprising a movable frame and a brake mechanism (100) described in any one of claims 1 to 16 provided on the movable frame, or a brake system (1000) described in any one of claims 17 to 20 provided on the movable frame.

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