TW202415572A - Brake mechanism, brake system and child carrier - Google Patents

Abstract

A brake mechanism, a brake system and a child carrier are disclosed. The brake mechanism is 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, 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. 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

Braking mechanisms, braking systems and child carriers

The present invention relates to a brake technology field, in particular to a brake mechanism, a brake system and a child carrier.

A stroller is usually equipped with a brake mechanism, which is used to lock the wheels to prevent the stroller from moving unexpectedly. A typical brake mechanism is equipped with a brake pedal. When the stroller needs to be braked, the user steps on the brake pedal, the brake pedal pivots downward, and the brake mechanism reaches a locked state to lock the wheels. Conversely, when the stroller needs to be pushed, the user pushes up the brake pedal with the toes, the brake pedal pivots upward, and the brake mechanism reaches an unlocked state to unlock the wheels.

The present invention aims to provide a brake mechanism, a brake system and a child carrier which are convenient for braking and releasing the brake.

To achieve the above-mentioned and other purposes, the present invention provides a brake mechanism for locking a first wheel, comprising: 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 corresponding to an unlocked state of the brake mechanism; a second pedal having a second pop-up position and a second retracted position; the first pedal is operably connected to the second pedal, wherein, when the first pedal is located at the first retracted position, the second pedal is located at the second pop-up position; when the second pedal is located at the second retracted position, the first pedal is located at the first pop-up position.

In an embodiment of the present invention, the first pedal moves along a straight line; the second pedal is sleeved on the first pivot, and the second pedal rotates around the first pivot.

In an embodiment of the present invention, the first pedal includes a first pressing portion, and the second pedal includes a second pressing portion. When the first pedal moves from the first pop-up position to the first retracted position, the first pressing portion abuts against the second pressing portion to drive the second pedal from the second retracted position to the second pop-up position.

In an embodiment of the present invention, the brake mechanism further includes a limiter structure, which is used to lock the first pedal at the first retracted position; when the second pedal moves to the second retracted position, the second pedal drives the first pedal to break away from the locking of the limiter structure.

In one embodiment of the present invention, the brake mechanism further includes a first elastic member, which is used to drive the first pedal to move from the first retracted position to the first pop-up position; and/or, a second elastic member, which is used to drive the second pedal to rotate from the second pop-up position to the second retracted position.

In an embodiment of the present invention, the moving direction of the first pedal is perpendicular to the axial direction of the first pivot.

In an embodiment of the present invention, the first pedal further includes a first treading portion and a main body portion connected to the first treading portion, and the first pressing portion includes an elastic arm extending from the main body portion, and the elastic arm extends obliquely relative to the movement direction of the first pedal.

In an embodiment of the present invention, the second pedal includes a second treading portion and a pivot portion connected to the second treading portion, the pivot portion is sleeved on the first pivot, and the second pressure portion includes a load-bearing plate extending from the pivot portion, and the plane where the load-bearing plate is located intersects with the plane where the second treading portion is located.

In one embodiment of the present invention, the elastic arm has a protrusion, and the protrusion is suitable for pushing the load-bearing plate to rotate.

In an embodiment of the present invention, the brake mechanism further includes a limit step. When the first pedal reaches the first retracted position, the limit step is engaged with the elastic arm, so that the first pedal is locked in the first retracted position and the second pedal is maintained in the second pop-up position; when the second pedal moves toward the second retracted position, the second pressing portion drives the elastic arm to undergo elastic deformation, so that the elastic arm is disengaged from the limit step.

In an embodiment of the present invention, the elastic arm includes an inclined wall and an end wall, and the inclined wall has a protrusion; when the first pedal moves to the first retracted position, the inclined wall abuts against the limit step while allowing the protrusion to abut against the second pressing portion; when the first pedal reaches the first retracted position, the end wall is engaged with the limit step.

In an embodiment of the present invention, the brake mechanism further includes a first rotating disk, which is sleeved on the second pivot; the end wall of the first rotating disk has a first inclined surface extending in the circumferential direction, and the first inclined surface has a first protruding end and a first avoidance end; a first locking pin is parallel to the second pivot and abuts against the first inclined surface; when the first locking pin abuts against the first protruding end, the first locking pin is in an extended position; when the first locking pin abuts against the first avoidance 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 disk rotates accordingly, so that the first protruding end and the first avoidance end selectively abut against the first locking pin.

In an embodiment of the present invention, when the first pedal moves from the first pop-up position to the first retracted position, the first pedal drives the first turntable to rotate in a first direction; the brake mechanism also includes a third elastic member, and when the first pedal moves from the first retracted position to the first pop-up position, the third elastic member drives the first turntable to rotate in a second direction, and the second direction is opposite to the first direction.

In an embodiment of the present invention, the first pedal moves along the radial direction of the second pivot; one of the first pedal and the first turntable has a transmission part, and the other is provided with a transmission surface, which is inclined relative to the moving direction of the first pedal, and the transmission part abuts against the transmission surface.

In an embodiment of the present invention, the first pedal further includes a first treading portion and a main body portion connected to the first treading portion, and the transmission portion protrudes outward from the main body portion; the first turntable includes a disc-shaped body and a push rod coaxially arranged with the disc-shaped body, the disc-shaped body has a blocking portion, the push rod is clamped between the transmission portion and the blocking portion, and the transmission surface is formed on the push rod.

In an embodiment of the present invention, the first pedal and the second pedal both move in a straight line direction, the first pedal and the second pedal are connected by a connecting rod, and the middle part of the connecting rod is pivoted on the pivot seat.

In addition, the present invention provides a brake system, comprising an auxiliary brake mechanism, a traction member and the above-mentioned brake mechanism, wherein the first rotary plate is operably connected to the auxiliary brake mechanism via the traction member, and the auxiliary brake mechanism is used to lock the second wheel.

In one embodiment of the present invention, a connecting head is provided at the first end of the traction member, and the second end is connected to the auxiliary brake mechanism; the brake mechanism is configured with a slide groove that slides with the connecting head, and the slide groove has a radial outer end and a radial inner end; the connecting head is movably connected to the first turntable, and when the first turntable rotates, the connecting head moves between the radial outer end and the radial inner end of the slide groove.

In one embodiment of the present invention, the first turntable has a recess for accommodating the connecting head, and the recess has an abutment wall that slidably cooperates with the connecting head.

In one embodiment of the present invention, the auxiliary brake mechanism includes: a second rotating plate, which is sleeved on the third pivot, and the end wall of the second rotating plate has a second inclined surface extending in the circumferential direction, and the second inclined surface has a second convex end and a second avoidance end; a second locking pin, which is parallel to the third pivot and abuts against the second inclined surface; when the second locking pin abuts against the second convex end, the second locking pin is in an extended position. The second wheel is locked in a locking position; when the second locking pin abuts against the second avoidance end, the second locking pin is in a retracted position to unlock the second wheel; the second end of the towing member is connected to the second turntable, and when the connecting head moves between the radial outer end and the radial inner end of the slide slot, the second turntable rotates accordingly, so that the second outer protruding end and the second avoidance end selectively abut against the second locking pin.

Furthermore, the present invention provides a child carrier, comprising a movable frame and the above-mentioned brake mechanism or the above-mentioned brake system, wherein the brake mechanism or the brake system is arranged on the movable frame.

The brake mechanism provided by the present invention can lock the first wheel and unlock the first wheel by stepping down the first pedal or the second pedal accordingly, without the need to use the toes to press against the first pedal or the second pedal, which will not cause damage to the user's shoe surface or instep. The downward stepping method is more in line with the user's foot usage habits, is convenient for the user to apply force, and brings a better user experience to the user.

In order to fully understand the purpose, features and effects of the present invention, the present invention is described in detail through the following specific embodiments and the accompanying drawings. The description is as follows:

In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those of ordinary skill in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and/or" used herein includes any and all combinations of one or more related listed items.

Please refer to FIG. 1 to FIG. 4 , which show a brake mechanism 100 provided according to an embodiment of the present invention, and the brake mechanism 100 is used to lock a first wheel 91, and the first wheel 91 can be, for example, the right rear wheel of a baby stroller. It can be understood that, although the brake mechanism 100 is described in this embodiment by taking the baby stroller as an example, the application scope of the brake mechanism 100 is not limited to the baby stroller, and it can also be applied to other child carriers with a movable frame or supermarket carts and other products.

Continuing to refer to FIG. 1 to FIG. 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 mounted on the housing 3. The housing 3 can be mounted on a rear leg 93 of a movable frame. FIG. 12 and FIG. 13 show the rear leg 93 and a second wheel 92 mounted on the rear leg 93. The second wheel 92 is, for example, a left rear wheel. The structure of the rear leg 93 is substantially symmetrical. 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 93. The first end cover 31 is mounted on one end of the middle housing 33, and the second end cover 32 is mounted on the other end of the middle housing 33. Of course, the structure of the housing 3 is not limited to the above examples, and the structure of the housing 3 can be implemented in a variety of ways as needed.

Referring to Figures 1 and 2, the first pedal 1 has a first pop-up position and a first retracted position. When the first pedal 1 moves between the first pop-up position and the first retracted position, the first locking pin 61 (see Figure 3) of the brake mechanism 100 moves between the extended position and the retracted position, and the brake mechanism 100 switches between the locked state and the unlocked state accordingly. Referring to Figure 3, in some embodiments, the first locking pin 61 is telescopically disposed in a hole (not shown in the figure) in the second end cover 32. When the first pedal 1 is stepped on to the first retracted position by the first pressure P1, the first lock pin 61 is driven to the extended position, at which time the first lock pin 61 extends relative to the second end cover 32 and engages with the locking portion 910 (which may be a hole or a groove) on the first wheel 91, and the brake mechanism 100 reaches the locked state of locking the first wheel 91. Conversely, when the first pedal 1 returns to the first pop-up position, the first lock pin 61 returns to the retracted position, at which time the first lock pin 61 retracts relative to the second end cover 32 and disengages from the locking portion 910 on the first wheel 91, and the brake mechanism 100 reaches the unlocked state of unlocking the first wheel 91.

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 engaged with the locking portion of the first wheel 91, and the brake mechanism 100 is in a locked state; and, when the first pedal 1 is in the first retracted position, the first locking pin 61 is in the retracted position and disengaged from the locking portion of the first wheel 91, and the brake mechanism 100 is in an unlocked state.

Continuing to refer to FIG. 1 and FIG. 2 , the second pedal 2 has a second pop-up position and a second retracted position, and the second pedal 2 is operably connected to the first pedal 1. When the first pedal 1 moves from the first pop-up position to the first retracted position, for example, under the first pressure P1, the movement of the first pedal 1 causes the second pedal 2 to move from the second retracted position to the second pop-up position. When the first pedal 1 is at the first retracted position, the second pedal 2 is at the second pop-up position. Conversely, when the second pedal 2 is stepped on under the second pressure P2, the second pedal 2 moves from the second pop-up position to the second retracted position, and the movement of the second pedal 2 will cause the first pedal 1 to move from the first retracted position to the first pop-up position. When the second pedal 2 is at the second retracted position, the first pedal 1 is at the first pop-up position. It should be noted that the term "operably connected" in the embodiments of the present invention includes but is not limited to direct connection, indirect connection, fixed connection, pivotal connection, pressing contact, etc. When two components are operably connected together, it means that the action of one component can cause the other component to act.

The brake mechanism 100 provided in the embodiment of the present invention can lock the first wheel 91 and unlock the first wheel 91 by stepping down the first pedal 1 or the second pedal 2, without the need to use the toes to press against the first pedal 1 or the second pedal 2, which will not cause damage to the user's shoe surface or instep. The downward stepping method is more in line with the user's foot habits, which is convenient for the user to apply force and brings a better user experience.

In some embodiments, the first pedal 1 and the second pedal 2 can be operably connected through any suitable intermediate structure, so that the first pedal 1 and the second pedal 2 are operably connected, so that the position change of one of the first pedal 1 and the second pedal 2 causes the other to make an opposite position change. For example, in some embodiments not shown, the first pedal 1 and the second pedal 2 both move in a straight line direction, and the movement directions of the first pedal 1 and the second pedal 2 are parallel to each other. The first pedal 1 and the second pedal 2 are connected through a connecting rod, and the middle part of the connecting rod is pivoted on a pivot seat, and the pivot seat can be fixed in the housing 3. Therefore, when the first pedal 1 is moved downward and retracted by the pedal force, the connecting rod pivots and drives the second pedal 2 to be lifted and popped out; similarly, when the second pedal 2 is moved downward and retracted by the pedal force, the connecting rod pivots and drives the first pedal 1 to be lifted and popped out. In other words, when the first pedal 1 moves from the first pop-up position to the first retracted position, the first pedal 1 drives the second pedal 2 to move from the second retracted position to the second pop-up position.

Please refer to Figures 1, 2 and 4. In some embodiments, the middle shell 33 of the shell 3 has an opening 330, and the first pedal 1 is inserted into the opening 330. The first pedal 1 moves in a straight line direction to a first pop-up position or a first retracted position. In some embodiments, the moving direction of the first pedal 1 is, for example, an up-down direction. The first end cover 31 of the shell 3 is mounted with a first pivot 301, and the second pedal 2 is sleeved on the first pivot 301. The second pedal 2 rotates around the first pivot 301 to a second pop-up position or a second retracted position. In some embodiments, the first pivot 301 is, for example, arranged horizontally, and the moving direction of the first pedal 1 is perpendicular to the axial direction of the first pivot 301. The first pedal 1 for linear motion and the second pedal 2 for pivotal motion can be driven against each other by directly abutting against each other, which is beneficial to the overall layout of the brake mechanism and the compactness of the structure.

Referring to FIG. 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 is subjected to the first pressure P1 and moves from the first pop-up position to the first retracted position, the first pressing portion 11 can abut against the second pressing portion 21, thereby driving the second pedal 2 from the second retracted position to the second pop-up position. Conversely, when the second pedal 2 is subjected to the second pressure P2 and moves from the second pop-up position to the second retracted position, the second pressing portion 21 can act on the first pressing portion 11 to help the first pedal 1 move from the first retracted position to the first pop-up position.

FIG6 shows an exemplary structure of the first pressure-receiving portion 11. The first pedal 1 also includes a first treading portion 12 and a main body 13 connected to the first treading portion 12. The first treading portion 12 is located outside the housing 3 for receiving the first pressure P1. The main body 13 extends into the interior of the housing 3 through the opening 330. The first pressure-receiving portion 11 includes an elastic arm 111 extending from the main body 13, and the elastic arm 111 extends obliquely relative to the movement direction of the first pedal 1. In some embodiments, the number of the elastic arms 111 can be set as needed. In some embodiments, the lower end of the elastic arm 111 is engaged with the main body 13, and the upper end of the elastic arm 111 is separated from the main body 13. When the first pedal 1 in the first pop-up position is subjected to the first pressure P1, the upper end of the elastic arm 111 can abut against the second pressing portion 21 of the second pedal 2, thereby pushing the second pedal 2 to rotate around the first pivot 301, so that the second pedal 2 moves from the second retracted position to the second pop-up position.

Figure 5 shows an exemplary structure of the second pressure portion 21. The second pedal 2 also includes a second treading portion 22 and a pivot portion 23 connected to the second treading portion 22. The second treading portion 22 is used to bear the second pressure P2, and the pivot portion 23 is sleeved on the first pivot 301. The second pressure portion 21 includes a load-bearing plate 211 extending from the pivot portion 23, and the plane where the load-bearing plate 211 is located intersects with the plane where the second treading portion 22 is located. In some embodiments, the plane where the load-bearing plate 211 is located is perpendicular or nearly perpendicular to the plane where the second pedal board 22 is located. When the elastic arm 111 moves downward, the elastic arm 111 can directly push the load-bearing plate 211 to rotate around the first pivot 301, so that the second pedal 2 moves to the second pop-up position. In some embodiments, a protrusion 1113 may be provided at the upper end of the elastic arm 111. When the elastic arm 111 moves downward along with the first pedal 1, the protrusion 1113 may hook the load-bearing plate 211 to easily push the load-bearing plate 211 to rotate.

Please refer to FIG9 . When the second pedal 2 is in the second pop-up position, the second tread portion 22 of the second pedal 2 is approximately parallel to the ground, so that the second pressure P2 is applied from top to bottom to the second pedal 2 so that the second pedal 2 pivots downward around the first pivot 301 to the second retracted position. In some embodiments, when the second pedal 2 is in the second pop-up position, the second tread portion 22 may also be inclined relative to the ground. Please refer to FIG1 . In some embodiments, the second pedal 2 in the second retracted position may be attached to the first end cover 31.

In some embodiments, the brake mechanism 100 may further include a limiter structure (e.g., the limiter step 316 described below). When the first pedal 1 is subjected to the first pressure P1 and moves from the first pop-up position to the first retracted position, the first pedal 1 may be locked at the first retracted position by the limiter structure. At this time, the first pressing portion 11 abuts against the second pressing portion 21, and the second pedal 2 is kept at the second pop-up position. When the second pedal 2 is subjected to the second pressure P2 and moves from the second pop-up position to the second retracted position, the second pedal 2 drives the first pedal 1 to disengage from the locking of the limiter structure, so as to allow the first pedal 1 to move to the first pop-up position.

Please refer to FIG. 4 and FIG. 5. In some embodiments, the brake mechanism 100 may also be provided with a first elastic member 51, which may be installed between the housing 3 and the first pedal 1, for example, to drive the first pedal 1 to move from the first retracted position to the first pop-up position. In this way, when the first pedal 1 is released from the locking of the limiter structure, it can automatically move to the first pop-up position. In some embodiments, the brake mechanism 100 may also be provided with a second elastic member 52, which is used to drive the second pedal 2 to move from the second pop-up position to the second retracted position. The second elastic member 52 is, for example, a torsion spring, which is sleeved on the first pivot 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 by the second pressure P2, after the first pedal 1 is released from the lock of the limit element structure, even if the second pressure P2 is released, the second pedal 2 can automatically move to the second retracted position under the action of the second elastic member 52, and the second pedal 2 can be kept in the second retracted position without shaking at will.

There are many ways to implement the limiter structure, as long as the above-mentioned function of locking or unlocking the first pedal 1 can be achieved. Please refer to Figures 7 to 9. In some embodiments, the limiter structure includes, for example, a limiter step 316, which can be arranged on the inner wall of the first end cover 31. When the first pedal 1 reaches the first retracted position, the limiter step 316 is engaged with the elastic arm 111 to lock the first pedal 1 in the first retracted position, and the second pedal 2 is correspondingly kept in the second pop-up position. When the second pedal 2 moves to the second retracted position, the bearing plate 211 of the second pressing portion 21 drives the elastic arm 111 to deform elastically, so that the elastic arm 111 is disengaged from the clamping connection with the limiting step 316, that is, the locking of the limiting step 316 on the elastic arm 111 is released.

Please refer to FIG6. In some embodiments, the elastic arm 111 includes an inclined wall 1111 and an end wall 1112, and a part of the inclined wall 1111 has the above-mentioned protrusion 1113. Please refer to FIG8. When the first pedal 1 moves from the first pop-up position to the first retracted position, the inclined wall 1111 abuts against the limit step 316 while allowing the protrusion 1113 to abut against the bearing plate 211 of the second pressing portion 21, so as to drive the second pedal 2 to rotate toward the second pop-up position. Please refer to FIG9. When the first pedal 1 reaches the first retracted position, the inclined wall 1111 passes over the limit step 316, the elastic arm 111 rebounds, and the end wall 1112 engages with the limit step 316, locking the first pedal 1 in the first retracted position. At this time, the protrusion 1113 and the bearing plate 211 of the second pressing portion 21 abut against each other, and the second pedal 2 is maintained at 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 pushes the protrusion 1113, so that the elastic arm 111 is deformed toward the main body 13, and the end wall 1112 can be easily disengaged from the clamping connection with the limiting step 316, and the first pedal 1 automatically moves to the first pop-up position under the action of the first elastic member 51.

10 and 11 show an exemplary structure in which the first pedal 1 drives the first locking pin 61 to move. The brake mechanism 100 further includes a first rotating disc 41, a center hole 410 of the first rotating disc 41 is sleeved on a second pivot 302 (see FIG. 4), the second pivot 302 is, for example, a hollow shaft formed inside the middle housing 33, and a center shaft 911 of the first wheel 91 (see FIG. 3) is sleeved in a hole 320 (see FIG. 7 to FIG. 9) of the second end cover 32 and the second pivot 302. The end wall of the first rotating disc 41 has a first inclined surface 401 extending in the circumferential direction, the first inclined surface 401 having a first convex end 4011 and a first avoidance end 4012, and the first convex end 4011 and the first avoidance end 4012 have different heights in the axial direction. The first locking pin 61 is parallel to the second pivot 302 and abuts against the first inclined surface 401. When the first pedal 1 moves between the first pop-up position and the first retracted position, the first rotating disk 41 is caused to rotate, so that the first protruding end 4011 and the first avoidance end 4012 selectively abut against one end of the first locking pin 61. When the first locking pin 61 abuts against the first protruding end 4011, the first locking pin 61 is pushed out to the extended position to lock the first wheel 91. Conversely, when the first locking pin 61 abuts against the first avoidance end 4012, the first locking pin 61 is in the retracted position to unlock the first wheel 91.

Please refer to FIG. 10 and FIG. 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 protruding end 4011 abuts against the first locking pin 61, and the first locking pin 61 locks the first wheel 91.

It should be noted that, in some embodiments not shown, the direction of the first inclined surface 401 can be changed so that the positions of the first protruding end 4011 and the first avoiding end 4012 of the first inclined surface 401 are interchanged, thereby changing the relationship between the position change of the first pedal 1 and the state change of the brake mechanism 100. For example, when the first pedal 1 is in the first pop-up position, the first protruding end 4011 abuts against the first locking pin 61, the first locking pin 61 locks 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 avoiding end 4012 abuts against the first locking pin 61, the first locking pin 61 unlocks the first wheel 91, and the brake mechanism 100 is in an unlocked state.

In some embodiments, a first elastic reset member (not shown in the figure) may be further provided between the first locking pin 61 and the housing 3. The first elastic reset member applies an elastic force to the first locking pin 61 to make the first locking pin 61 abut against the first inclined surface 401 of the first rotating disk 41. The first elastic reset member is, for example, a spring installed between the step 611 (see FIG. 10 ) of the first locking pin 61 and the second end cover 32.

Please refer to Figures 6, 10 and 11. In some embodiments, when the first pedal 1 moves from the first pop-up position to the first retracted position, the first pedal 1 drives the first rotating disk 41 to rotate in the first direction T1. The brake mechanism 100 may also include a third elastic member 53. When the first pedal 1 moves from the first retracted position to the first pop-up position, the third elastic member 53 drives the first rotating disk 41 to rotate in the second direction T2. The first direction T1 and the second direction T2 are opposite. The third elastic member 53 is, for example, a torsion spring, which can be sleeved on the second pivot 302. The two spring arms of the torsion spring are, for example, respectively connected to the first rotating disk 41 and the second end cover 32. As can be seen from the above, the rotation of the first turntable 41 causes the first protruding end 4011 and the first avoidance end 4012 to selectively abut against the first locking pin 61, thereby causing the first locking pin 61 to lock or unlock the first wheel 91.

FIG6 shows an exemplary structure in which the first pedal 1 drives the first rotating disk 41 to rotate. The first pedal 1 moves radially along the second pivot 302, and a transmission portion 131 protruding outward may be provided on the main body 13 of the first pedal 1. A transmission surface 4121 is provided on the first rotating disk 41, and the transmission surface 4121 is inclined relative to the moving direction of the first pedal 1. The transmission portion 131 is maintained in contact with the transmission surface 4121 under the action of the third elastic member 53 (see FIGS. 10 and 11), for example. When the first pedal 1 is subjected to the first pressure P1 and moves to the first retracted position, the transmission portion 131 pushes the transmission surface 4121, so that the first rotating disk 41 rotates in the first direction T1. On the contrary, when the first pressure P1 is released and the first pedal 1 is released from the locking of the limiter structure, the third elastic member 53 drives the first rotating disk 41 to rotate in the second direction T2, and the transmission surface 4121 drives the first pedal 1 to move to the first pop-up position through the transmission part 131. It can be understood that when the first pedal 1 is driven to move from the first retracted position to the first pop-up position by the third elastic member 53, the brake mechanism 100 may not be equipped with the aforementioned first elastic member 51.

In some embodiments not shown, the positions of the transmission part 131 and the transmission surface 4121 on the first pedal 1 and the first turntable 41 can be interchanged, as long as the movement of one of the first pedal 1 and the first turntable 41 can push the other to make a corresponding movement.

FIG. 4 and FIG. 6 show an exemplary structure of the first rotating disk 41. In some embodiments, the first rotating disk 41 includes a disk-shaped body 411 and a push rod 412 coaxially arranged with the disk-shaped body 411. The center hole of the disk-shaped body 411 is sleeved on the second pivot 302, and one end of the push rod 412 is sleeved on the second pivot 302 through the hole 4120. The first inclined surface 401 is, for example, located on the first end wall of the disk-shaped body 411, and the second end wall of the disk-shaped body 411 has a stopper 4110. The push rod 412 is clamped between the stopper 4110 and the driving part 131 of the first pedal 1, and the driving surface 4121 is formed on the push rod 412. By splitting the first rotating disk 41 into the disk-shaped body 411 and the push rod 412, the disk-shaped body 411 and the push rod 412 can be easily processed, which is conducive to reducing the difficulty of manufacturing the first rotating disk 41. Of course, in some alternative embodiments, the push rod 412 may not be provided, and the driving surface 4121 may be directly formed on the disk-shaped body 411.

Please refer to FIG. 4 and FIG. 6 . In some embodiments, the main body 13 has a first guide hole 1301, and the second pivot 302 is slidably matched with the first guide hole 1301 to limit the movement stroke of the first pedal 1. In addition, the main body 13 may also have a second guide hole 1302, and a guide rod 3302 may be provided in the opening 330, and the guide rod 3302 is slidably matched with the second guide hole 1302. The cooperation between the second pivot 302 and the first guide hole 1301 and the cooperation between the guide rod 3302 and the second guide hole 1302 can guide the linear movement of the first pedal 1. In some alternative embodiments, the opening 330 is slidably matched with the main body 13, and the main body 13 may not be provided with the second guide hole 1302. 4 and 5, the first elastic member 51 can be disposed between the guide rod 3302 and the first pedal portion 12. The first pedal 1 can also be made to move in a straight line by other means, not limited to those described herein.

The working principle of the brake mechanism 100 provided in the above embodiment is briefly described below.

1. When the brake mechanism 100 is in the unlocked state, the first pedal 1 is in the first pop-up position, the second pedal 2 is in the second retracted position, the first avoidance end 4012 of the first rotating plate 41 abuts against the first locking pin 61, and the first locking pin 61 is disengaged from the locking portion 910 of the first wheel 91.

2. When the brake mechanism 100 needs to be switched from the unlocked state to the locked state, the first pedal 1 is stepped on downward, and the first pedal 1 moves downward under the action of the first pressure P1. The transmission part 131 of the first pedal 1 pushes the transmission surface 4121 of the push rod 412. The push rod 412 rotates under the force and drives the disc 411 to rotate in the first direction T1. The first inclined surface 401 on the disc 411 pushes the first locking pin 61 toward the locking part 910. When the first pedal 1 moves downward, the protrusion 1113 of the elastic arm 111 pushes the upper surface of the bearing plate 211 of the second pedal 2, and the second pedal 2 rotates upward around the first pivot 301. When the first pedal 1 moves downward to the position, the end wall 1112 of the elastic arm 111 engages with the limit step 316. The first pressure P1 is released, the first pedal 1 remains in the first retracted position, the protrusion 1113 remains against the bearing plate 211, so that the second pedal 2 remains in the second pop-up position. The first outer protrusion 4011 of the first inclined surface 401 abuts against the first locking pin 61, and the first locking pin 61 engages with the locking portion 910 of the first wheel 91.

3. When the brake mechanism 100 needs to be switched from the locked state to the unlocked state, the second pedal 2 is stepped on downward, and the second pedal 2 rotates downward around the first pivot 301 under the action of the second pressure P2, and the bearing plate 211 of the second pedal 2 pushes the protrusion 1113 of the elastic arm 111, and the elastic arm 111 is elastically deformed so that the end wall 1112 is disengaged from the limit step 316. At this time, even if the second pressure P2 is released, the second pedal 2 can move to the second retracted position under the action of the second elastic member 52, and the first pedal 1 can move to the first pop-out position under the action of the first elastic member 51. Correspondingly, the disc-shaped body 411 rotates in the second direction T2 under the action of the third elastic member 53, and the first locking pin 61 withdraws from the locking portion 910 under the action of the first elastic reset member. The rotation of the disc-shaped body 411 drives the push rod 412 to rotate, and the driving surface 4121 of the push rod 412 drives the driving portion 131 of the first pedal 1, exerting a force on the first pedal 1 to move toward the first pop-up position. When the first pedal 1 moves upward to the first pop-up position, the first avoidance end 4012 of the first inclined surface 401 abuts against the first locking pin 61, and the first locking pin 61 disengages from the locking portion 910 of the first wheel 91.

The embodiment of the present invention provides a dual-pedal brake mechanism with a simple structure. The locking operation and unlocking operation of the brake mechanism 100 only need to step on the corresponding pedal, thereby improving the user experience.

Please refer to Figures 12 and 13. The embodiment of the present invention further provides a brake system 1000, which includes an auxiliary brake mechanism 200 and the brake mechanism 100 described above. The first rotary plate 41 is operably connected to the auxiliary brake mechanism 200 through the traction member 7. In some embodiments, when the brake mechanism 200 locks the first wheel 91, the first rotary plate 41 acts on the auxiliary brake mechanism 200 through the traction member 7, so that the auxiliary brake mechanism 200 locks the second wheel 92, realizing the function of one-step double brake.

Please refer to FIG. 10 and FIG. 11 . In some embodiments, a connector 71 is disposed at the first end of the traction member 7, and a second end 72 is connected to the auxiliary brake mechanism 200. A slide groove 310 is disposed in the inner cavity of the housing 3, and the slide groove 310 is disposed on the first end cover 31, for example. The slide groove 310 is slidably matched with the connector 71, and the slide groove 310 has a radial outer end 3101 and a radial inner end 3102. The connector 71 is movably connected to the first rotating disk 41. When the first rotating disk 41 rotates, the connector 71 moves between the radial outer end 3101 and the radial inner end 3102 of the slide groove 310, and drives the auxiliary brake mechanism 200 to lock or unlock the second wheel 92.

Referring to FIGS. 12 and 13 , in some embodiments, the auxiliary brake mechanism 200 includes a second rotating disc 42 and a second locking pin 62. The center hole 420 of the second rotating disc 42 is sleeved on a third pivot (not shown in the figure), and the third pivot is, for example, mounted on a rear foot frame 93 of a movable frame, and the third pivot is coaxially arranged with the second wheel 92. The end wall of the second rotating disc 42 has a second inclined surface 402 extending in the circumferential direction, and the second inclined surface 402 has a second convex end 4021 and a second avoidance end 4022. The second locking pin 62 is parallel to the third pivot and abuts against the second inclined surface 402. When the second locking pin 62 abuts against the second convex end 4021, the second locking pin 62 is in an extended position to lock the second wheel 92. When the second locking pin 62 abuts against the second avoidance end 4022, the second locking pin 62 is in a retracted position to unlock the second wheel 92.

The second end 72 of the pulling member 7 is connected to the second turntable 42. When the connecting head 71 moves between the radial outer end 3101 and the radial inner end 3102 of the slide groove 310, the second turntable 42 rotates accordingly so that the second outer protruding end 4021 and the second avoidance end 4022 selectively abut against the second locking pin 62.

In some embodiments, please refer to FIG. 10 and FIG. 12 , when the first pedal 1 is in the first pop-up position, the first locking pin 61 unlocks the first wheel 91. At this time, the connector 71 is at the radial outer end 3101 of the slide groove 310, the second avoidance end 4022 of the second rotary plate 42 abuts against the second locking pin 62, and the second locking pin 62 is disengaged from the locking portion (not shown) of the second wheel 92, and the auxiliary brake mechanism 200 is in an unlocked state.

Please refer to FIG. 11 and FIG. 13 , when the first pedal 1 moves to the first retracted position, the first rotating disc 41 drives the first locking pin 61 to lock the first wheel 91, and at the same time, the first rotating disc 41 drives the connecting head 71 to move toward the radial inner end 3102 of the slide groove 310. At this time, the traction member 7 drives the second rotating disc 42 to rotate, so that the second outer protruding end 4021 of the second inclined surface 402 abuts against the second locking pin 62, and the second locking pin 62 is pushed out and engaged with the locking portion of the second wheel 92, and the auxiliary brake mechanism 200 is in a locked state.

The auxiliary brake mechanism 200 may also be provided with a fourth elastic member (not shown in the figure), which is, for example, a torsion spring connected to the second rotating disk 42. When the first pedal 1 moves to the first ejection position, the fourth elastic member can drive the second rotating disk 42 to rotate, so that the second avoidance end 4022 of the second inclined surface 402 abuts against the second locking pin 62 to unlock the second wheel 92, and at the same time, the connector 7 is driven from the radial inner end 3102 of the slide groove 310 to the radial outer end 3101.

In some embodiments, the first rotating disk 41 has a recess 417 for accommodating the connector 71, and the recess 417 has a supporting wall 4171 that slides with the connector 71, and the supporting wall 4171 is a non-radial surface. When the first rotating disk 41 rotates, the connector 71 remains in contact with the supporting wall 4171 and slides between the radial inner end 3102 and the radial outer end 3101 of the slide slot 310.

In some alternative embodiments, the direction of the second inclined surface 402 can be changed so that the positions of the second outer protruding end 4021 and the second avoiding end 4022 of the second inclined surface 402 are interchanged. In this way, when the connector 71 is at the radial outer end 3101 of the slide groove 310, the second outer protruding end 4021 of the second inclined surface 402 abuts against the second locking pin 62; when the connector 71 is at the radial inner end 3102 of the slide groove 310, the second avoiding end 4022 of the second rotating disk 42 abuts against the second locking pin 62.

In addition, the second locking pin 62 may also be provided with a second elastic reset member (not shown in the figure). The second elastic reset member applies an elastic force to the second locking pin 62 to make the second locking pin 62 abut against the second inclined surface portion 402 of the second rotating disk 42 .

The present invention also provides a child carrier, which includes a movable frame and the brake mechanism 100 or the brake system 200 described in the above embodiment, wherein the brake mechanism 100 or the brake system 200 is arranged on the movable frame. As mentioned above, the child carrier can be but is not limited to a baby stroller.

The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

The above-mentioned embodiments only express several implementation methods of the present invention, and the description is relatively specific and detailed, but it should not be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be based on the attached claims.

100: Braking mechanism 1000: Braking system 200: Auxiliary braking mechanism 1: First pedal 11: First pressure part 111: Elastic arm 1111: Inclined wall 1112: End wall 1113: Bump 12: First pedal 13: Main body 1301: First guide hole 1302: Second guide hole 131: Transmission part 2: Second pedal 21: Second pressure part 211: Load-bearing plate 22: Second pedal 23: Pivot part 3: Housing 301: First pivot 302: Second pivot 31: First end cover 310: Slide groove 3101: Radial outer end 3102: radial inner end 316: limit step 32: second end cover 320: hole 33: intermediate housing 330: opening 3302: guide rod 401: first inclined surface 4011: first convex end 4012: first avoidance end 402: second inclined surface 4021: second convex end 4022: second avoidance end 41: first turntable 410: center hole 411: disk-shaped body 4110: blocking portion 412: push rod 4120: hole 4121: transmission surface 417: recessed portion 4171: abutment wall 42: second turntable 420: center hole 51: first elastic member 52: second elastic member 53: third elastic member 61: first locking pin 611: step 62: second locking pin 7: towing member 71: connector 72: second end 91: first wheel 910: locking part 911: center axis 92: second wheel 93: rear frame P1: first pressure P2: second pressure T1: first direction T2: second direction

The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their description are used to explain the present invention and do not constitute an improper limitation on the present invention. Figure 1 is a three-dimensional diagram of a brake mechanism and a first wheel provided according to an embodiment of the present invention, in which the first pedal is in a first pop-up position and the second pedal is in a second retracted position. Figure 2 is a three-dimensional diagram of a brake mechanism and a first wheel provided according to an embodiment of the present invention, in which the first pedal is in a first retracted position and the second pedal is in a second pop-up position. Figure 3 is a three-dimensional diagram of a brake mechanism provided according to an embodiment of the present invention separated from the first wheel. For the convenience of explanation, the first end cover is omitted in the figure. In the figure, the first pedal is in a first retracted position and the second pedal is in a second pop-up position. Figure 4 is an exploded diagram of a brake mechanism provided according to an embodiment of the present invention. FIG. 5 is a three-dimensional diagram of a brake mechanism and a first wheel provided according to an embodiment of the present invention. For the convenience of explanation, the first end cover is omitted in the figure. In the figure, the first pedal is in the first pop-up position, and the second pedal is in the second retracted position. FIG. 6 is a three-dimensional diagram of the first pedal and the first turntable of the brake mechanism provided according to an embodiment of the present invention. FIG. 7 is a cross-sectional view of a brake mechanism provided according to an embodiment of the present invention, in which the first pedal is in the first pop-up position and the second pedal is in the second retracted position. FIG. 8 is a cross-sectional view of a brake mechanism provided according to an embodiment of the present invention, in which the first pedal moves to the first retracted position. FIG. 9 is a cross-sectional view of a brake mechanism provided according to an embodiment of the present invention, in which the first pedal is in the first retracted position and the second pedal is in the second pop-up position. FIG. 10 is a three-dimensional diagram of a brake mechanism provided according to an embodiment of the present invention. For the convenience of explanation, the middle shell and the second end cover are omitted in the figure. In the figure, the first pedal is in the first pop-up position and the first lock pin is in the retracted position. FIG. 11 is a three-dimensional diagram of a brake mechanism provided according to an embodiment of the present invention. For the convenience of explanation, the middle shell and the second end cover are omitted in the figure. In the figure, the first pedal is in the first retracted position and the first lock pin is in the extended position. FIG. 12 is a three-dimensional diagram of the auxiliary brake mechanism, the second wheel and the movable frame in the brake system provided according to an embodiment of the present invention, in which the second lock pin is in the retracted position. Figure 13 is a three-dimensional diagram of the auxiliary brake mechanism, the second wheel and the movable frame in the brake system provided according to an embodiment of the present invention, in which the second locking pin is in the extended position.

100: Brake mechanism

11: First pressing part

12: First pedaling part

13: Main body

1301: First guide hole

1302: Second guide hole

131: Transmission Department

21: Second pressure part

211: Load-bearing plate

22: Second pedal part

23: Pivot

301: First axis

302: Second axis

31: First end cap

32: Second end cover

33: Middle shell

330: Opening

3302: Guide rod

401: First inclined surface

41: First turntable

411:Disc-shaped body

4110:Blocking part

412:Putter

4120: hole

4121: Transmission surface

51: First elastic member

52: Second elastic member

53: Third elastic member

61: First locking pin

611:Stairs

7: Traction piece

71: Connector

Claims (21)

A brake mechanism for locking a first wheel, comprising: 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 corresponding to an unlocked state of the brake mechanism; and a second pedal having a second pop-up position and a second retracted position; the first pedal is operably connected to the second pedal, wherein when the first pedal is in the first retracted position, the second pedal is in the second pop-up position; when the second pedal is in the second retracted position, the first pedal is in the first pop-up position. A brake mechanism as described in claim 1, wherein the first pedal moves in a straight line direction; the second pedal is mounted on a first pivot, and the second pedal rotates around the first pivot. A brake mechanism as described in claim 2, wherein the first pedal includes a first pressure portion, and the second pedal includes a second pressure portion, and when the first pedal moves from the first pop-up position to the first retracted position, the first pressure portion abuts against the second pressure portion to drive the second pedal from the second retracted position to the second pop-up position. The brake mechanism as described in claim 3 further includes a limit element structure, which is used to lock the first pedal in the first retracted position; when the second pedal moves to the second retracted position, the second pedal drives the first pedal to break away from the lock of the limit element structure. The brake mechanism as described in claim 4 further comprises a first elastic member, which is used to drive the first pedal to move from the first retracted position to the first pop-up position; and/or a second elastic member, which is used to drive the second pedal to rotate from the second pop-up position to the second retracted position. A brake mechanism as described in claim 2, wherein the movement direction of the first pedal is perpendicular to the axial direction of the first pivot. A brake mechanism as described in claim 3, wherein the first pedal further includes a first pedal portion and a main body portion connected to the first pedal portion, and the first pressure portion includes an elastic arm extending from the main body portion, and the elastic arm extends obliquely relative to the movement direction of the first pedal. A brake mechanism as described in claim 7, wherein the second pedal includes a second treading portion and a pivot portion connected to the second treading portion, the pivot portion is sleeved on the first pivot, and the second pressure portion includes a load-bearing plate extending from the pivot portion, and the plane where the load-bearing plate is located intersects with the plane where the second treading portion is located. A brake mechanism as described in claim 8, wherein the elastic arm has a protrusion, and the protrusion is suitable for pushing the load-bearing plate to rotate. The brake mechanism as described in claim 7 further includes a limit step. When the first pedal reaches the first retracted position, the limit step is engaged with the elastic arm, so that the first pedal is locked in the first retracted position and the second pedal is maintained in the second pop-up position; when the second pedal moves to the second retracted position, the second pressing portion drives the elastic arm to undergo elastic deformation, so that the elastic arm is disengaged from the limit step. A brake mechanism as described in claim 10, wherein the elastic arm includes an inclined wall and an end wall, the inclined wall having a protrusion; when the first pedal moves to the first retracted position, the inclined wall abuts against the limit step while allowing the protrusion to abut against the second pressing portion; when the first pedal reaches the first retracted position, the end wall engages with the limit step. The brake mechanism as described in claim 1, further comprising: a first rotating plate, sleeved on the second pivot; the end wall of the first rotating plate has a first inclined portion extending in the circumferential direction, the first inclined portion having a first protruding end and a first avoidance end; a first locking pin, parallel to the second pivot and abutting against the first inclined portion; when the first locking pin abuts against the first protruding end, the first locking pin is in an extended position; when the first locking pin abuts against the first avoidance 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, so that the first protruding end and the first avoidance end selectively abut against the first locking pin. A brake mechanism as described in claim 12, wherein when the first pedal moves from the first pop-up position to the first retracted position, the first pedal drives the first turntable to rotate in a first direction; the brake mechanism also 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 turntable to rotate in a second direction, and the second direction is opposite to the first direction. A brake mechanism as described in claim 12, wherein the first pedal moves radially along the second pivot; one of the first pedal and the first turntable has a transmission part, and the other is provided with a transmission surface, which is inclined relative to the moving direction of the first pedal, and the transmission part abuts against the transmission surface. A brake mechanism as described in claim 14, wherein the first pedal further includes a first treading portion and a main body portion connected to the first treading portion, and the transmission portion protrudes outward from the main body portion; the first turntable includes a disc-shaped body and a push rod coaxially arranged with the disc-shaped body, the disc-shaped body has a blocking portion, the push rod is clamped between the transmission portion and the blocking portion, and the transmission surface is formed on the push rod. A brake mechanism as described in claim 1, wherein the first pedal and the second pedal both move in a straight line direction, the first pedal and the second pedal are connected by a connecting rod, and the middle part of the connecting rod is pivoted on a pivot seat. A brake system comprises an auxiliary brake mechanism, a traction member and the brake mechanism described in any one of claims 12 to 15, wherein the first rotating plate is operably connected to the auxiliary brake mechanism via the traction member, and the auxiliary brake mechanism is used to lock the second wheel. A brake system as described in claim 17, wherein the first end of the traction member is provided with a connecting head, and the second end is connected to the auxiliary brake mechanism; the brake mechanism is configured with a slide groove that slidably cooperates with the connecting head, and the slide groove has a radial outer end and a radial inner end; the connecting head is movably connected to the first turntable, and when the first turntable rotates, the connecting head moves between the radial outer end and the radial inner end of the slide groove. A brake system as described in claim 18, wherein the first turntable has a recess for accommodating the connecting head, and the recess has an abutment wall that slides with the connecting head. The brake system as described in claim 18, wherein the auxiliary brake mechanism includes: a second rotating plate, which is sleeved on the third pivot, and the end wall of the second rotating plate has a second inclined surface extending in the circumferential direction, and the second inclined surface has a second protruding end and a second avoidance end; a second locking pin, which is parallel to the third pivot and abuts against the second inclined surface; when the second locking pin abuts against the second protruding end, the second locking pin is in The second locking pin is in an extended position to lock the second wheel; when the second locking pin abuts against the second avoidance end, the second locking pin is in a retracted position to unlock the second wheel; the second end of the towing member is connected to the second turntable, and when the connecting head moves between the radial outer end and the radial inner end of the slide slot, the second turntable rotates accordingly to make the second protruding end and the second avoidance end selectively abut against the second locking pin. A child carrier comprises a movable frame and a brake mechanism as described in any one of claims 1 to 16 or a brake system as described in any one of claims 17 to 20, wherein the brake mechanism or the brake system is arranged on the movable frame.