Brake mechanism, movable frame and baby carrier

Abstract

This invention provides a braking mechanism, a mobile vehicle frame, and a child vehicle. The braking mechanism includes a brake drive and a brake pedal, wherein the brake pedal is detachably connected to the brake drive.

Description

Braking system, mobile frame and child carrier This invention relates to the field of infant and toddler products, and more particularly to a braking mechanism, a mobile vehicle frame, and a child vehicle that helps reduce the folded volume of a mobile vehicle frame. Strollers and other child vehicles with mobile frames are typically equipped with a braking mechanism to brake the wheels and prevent unintended movement. A typical braking mechanism includes a brake pedal, a brake actuator, a brake lever, and a locking pin. The brake pedal and brake actuator are integrated components mounted on the cross tube of the mobile frame. The brake actuator is operably connected to the locking pin via the brake lever, and the locking pin is positioned corresponding to the wheel. When braking is needed, the user presses the brake pedal. This causes the brake actuator to rotate around the axis of the cross tube, simultaneously moving the brake lever. The locking pin then moves and locks the wheel. To facilitate the transport of child vehicles, the mobile frames of these vehicles are typically foldable. When the mobile frame is folded, the pedals are usually tilted and protrude outwards relative to the folded frame, resulting in the folded mobile frame taking up a significant amount of space. This invention provides a braking mechanism, a mobile frame, and a child vehicle that help reduce the folded size of a mobile vehicle frame, thereby solving the aforementioned problems. This invention also provides a mobile frame and a child vehicle. The scope of this patent application discloses a braking mechanism comprising a brake drive and a brake pedal, wherein the brake pedal is detachably connected to the brake drive and / or the brake pedal is foldable. The scope of the present invention further discloses the engagement between the brake drive component and the brake pedal. The scope of the present invention further discloses that one of the brake drive component and the brake pedal has a male connector and the other has a female connector, wherein the male connector and the female connector cooperate with each other. The claims of this invention further disclose that the brake drive member has a rotation axis, and the brake drive member rotates about the rotation axis when driven by the brake pedal; the brake pedal includes a pedal portion and an annular portion, the annular portion is sleeved on the brake drive member, and the annular portion is adapted to move along the rotation axis to disengage from the brake drive member. The claims of this invention further disclose that the annular portion and the brake drive component are tightly fitted, or that a rotation restriction structure is provided between the annular portion and the brake drive component. The claims of this invention further disclose that the rotation limiting structure includes: a positioning rib extending along the rotation axis, and a positioning groove cooperating with the positioning rib. The positioning rib is disposed on the outer periphery of the brake drive member, and the positioning groove is disposed on the inner wall of the annular portion; or the positioning rib is disposed on the inner wall of the annular portion, and the positioning groove is disposed on the outer periphery of the brake drive member. The claims of this invention further disclose that the number of the positioning ribs is multiple, the multiple positioning ribs include a first positioning rib, a second positioning rib and a third positioning rib, the first positioning rib, the second positioning rib and the third positioning rib are arranged at intervals in the circumferential direction, and are configured to satisfy at least one of the following: (a) the widths of the first positioning rib, the second positioning rib and the third positioning rib are not equal; and (b) the heights of the first positioning rib, the second positioning rib and the third positioning rib are not equal. The claims of this invention further disclose that the number of the positioning grooves is multiple, including a first positioning groove, a second positioning groove, and a third positioning groove; the first positioning groove, the second positioning groove, and the third positioning groove respectively cooperate with the first positioning rib, the second positioning rib, and the third positioning rib. The scope of the patent application of this invention further discloses that an axial positioning structure is provided between the annular portion and the brake drive component. The claims of this invention further disclose that the axial positioning structure includes an elastic arm and a recess. The elastic arm extends along the rotation axis, and a protrusion is provided at the end of the elastic arm; the recess engages with the protrusion on the elastic arm. Alternatively, the elastic arm is disposed on the brake drive member, and the recess is disposed on the annular portion; or the elastic arm is disposed on the annular portion, and the recess is disposed on the brake drive member. The claims of this invention further disclose that the braking mechanism includes a guide groove for guiding the sliding of the elastic arm. Corresponding to the elastic arm being disposed on the brake drive member, the guide groove is disposed on the inner wall of the annular portion; alternatively, corresponding to the elastic arm being disposed on the annular portion, the guide groove is disposed on the outer periphery of the brake drive member. The scope of this patent application further discloses that, in the direction in which the elastic arm is inserted into the guide groove, the depth of the guide groove gradually decreases, and the groove depth is the dimension of the guide groove in the radial direction of the brake drive component. The claims of this invention further disclose that the elastic arm is disposed on the brake drive member, and the recess is a through hole disposed on the annular portion. The claims of this invention further disclose that the annular portion has a first circumferential position and a second circumferential position relative to the brake drive member. When the annular portion is located in the first circumferential position, the brake pedal is configured to drive the brake drive member to rotate; when the annular portion is located in the second circumferential position, the brake pedal is rotatable relative to the brake drive member to a state where it does not protrude outward. The scope of this patent application also discloses a mobile vehicle frame equipped with the aforementioned braking mechanism. The scope of the present invention further discloses that in some embodiments, a horizontal tube and wheels are included, wherein the horizontal tube is disposed between two wheels and both ends of the horizontal tube are rotatably connected to the two wheels respectively; the brake drive component is sleeved on the horizontal tube; the brake mechanism further includes a fixed seat, a brake lever and a locking pin, and the brake drive component is operably connected to the locking pin through the brake lever. The scope of the patent application of this invention further discloses that the brake pedal is configured to be rotatably mounted on the horizontal tube after being detached from the brake drive component. The scope of this patent application also discloses a child vehicle comprising the aforementioned mobile frame. This invention allows for two main improvements: firstly, the connection between the brake drive component and the brake pedal can be designed to be detachable; secondly, the brake pedal can be designed to be foldable. When the main body of the mobile frame is folded, the brake pedal can be separated from the brake drive component and / or folded. This helps prevent the brake pedal from protruding excessively relative to the folded frame body, thereby reducing the volume of the folded mobile frame and saving on packaging costs. Figure 1 shows a perspective view of a child carrier 1000 according to an embodiment of the present invention. The child carrier 1000 is illustrated using a stroller as an example, but the type of child carrier 1000 is not limited to a stroller. In other embodiments, the child carrier 1000 may be, for example, a high chair, a playpen, etc. As shown, the child carrier 1000 includes a movable frame 200 and a seat 300 mounted on the movable frame 200. The movable frame 200 is equipped with a braking mechanism 100 according to an embodiment of the present invention. Referring to Figure 1, the structure of the mobile frame 200 can optionally be bilaterally symmetrical, comprising a frame body 201 and wheels mounted on the bottom of the frame body 201. The wheels include two front wheels 202 and two rear wheels 203. A horizontal tube 2011 is provided at the rear of the frame body 201, for example, between the two wheels 203, with both ends of the horizontal tube 2011 rotatably connected to the two wheels 203 respectively. In some embodiments, the horizontal tube 2011 is located at the front of the frame body 201, between the two wheels 202, with both ends of the horizontal tube 2011 rotatably connected to the two wheels 202 respectively. As shown in Figure 5, the horizontal tube 2011 is equipped with structures such as the brake drive component 1 and brake pedal 2 of the brake mechanism 100, which is used to brake the wheels 203. Referring to Figure 2, the frame body 201 is detachably connected to the seat 300, and the frame body 201 can be folded. Referring to Figures 5 and 6, the braking mechanism 100 may include a brake drive member 1 and a brake pedal 2. In some embodiments, the brake drive member 1 is fitted onto the horizontal tube 2011 through its central hole 102 (see Figure 9), thereby having a rotation axis XX that substantially coincides with the axis of the horizontal tube 2011. The brake drive member 1 is operatively connected to the locking pin 41 of the braking mechanism 100 (see Figure 2). In some embodiments, when the brake drive member 1 is driven by the brake pedal 2, it rotates about the rotation axis XX, simultaneously driving the locking pin 41 to lock the wheel 203. The operative connection between the brake drive member 1 and the locking pin 41 can be found in related technologies, and an exemplary connection structure of the brake drive member 1 and the locking pin 41 will also be described below. Referring to Figures 2, 3, 5, and 6, the brake pedal 2 may include a pedal portion 21 and an annular portion 22. The pedal portion 21 is for direct user pressing, and the annular portion 22 is located on one side of the pedal portion 21. The brake pedal 2 is detachably mounted on the brake drive member 1 via the annular portion 22. Referring to Figure 1, when the mobile frame 200 is unfolded for a child to ride in, the brake pedal 2 is mounted on the brake drive member 1 and is in a normal state. When the brake pedal 2 is subjected to the user's pressing force, it will drive the brake drive member 1 to rotate around the rotation axis XX. As described above, the rotation of the brake drive member 1 will drive the locking pin 41 to insert into the locking hole (not shown in the figure) of the wheel 203, causing the brake mechanism 100 to switch from the released state to the braking state. Referring to Figure 2, when the mobile frame 200 is folded for packaging or storage, if the brake pedal 2 is normally mounted on the brake drive component 1, the brake pedal 2 will protrude excessively outward relative to the frame body 201, which is detrimental to reducing the volume of the mobile frame 200 after folding. In this case, an axial force can be applied to the annular portion 22 of the brake pedal 2, causing the annular portion 22 to move along the rotation axis XX until it is completely detached from the brake drive component 1 and suspended on the cross tube 2011. It can be understood that the brake pedal 2 suspended on the cross tube 2011 can move freely along the rotation axis XX to adjust its position. In the above embodiment of the present invention, the brake drive component 1 and the brake pedal 2 of the brake mechanism 100 are designed as detachably connected separate structures. When the mobile frame 200 is shipped in a folded state, the brake pedal 2 can be separated from the brake drive component 1 and suspended on the cross tube 2011. The brake pedal 2 can then be rotated to any suitable position without excessively protruding outward relative to the frame body 201, thereby reducing the folded volume of the frame body 201 and saving packaging costs. Moreover, the brake pedal 2 suspended on the cross tube 2011 is not easily lost. When the user receives the mobile frame 200, they can attach the brake pedal 2 to the brake drive component 1 themselves, so that the brake pedal 2 and the brake mechanism 100 can be used normally. Referring to Figures 2, 4, 5, and 9, this embodiment illustrates an exemplary operable connection structure between the brake actuator 1 and the locking pin 41. The brake mechanism 100 includes a mounting base 10 and a brake lever 4. The mounting base 10 is fixed to, for example, a cross tube 2011 and is disposed on one side of the brake actuator 1. The brake lever 4 is disposed outside and parallel to the cross tube 2011, located between the mounting base 10 and the wheel 203 on the same side of the brake actuator 1. As shown in Figure 2, the first end of the brake lever 4 passes through, for example, a wheel seat 2010 of the movable frame 200 for mounting the wheel 203, and the locking pin 41 is located at the first end of the brake lever 4 and is used to engage with a locking hole of the wheel 203. In this embodiment, the locking pin 41 is part of the brake lever 4. In some embodiments not shown, the locking pin 41 may be parallel to the brake lever 4, in which case the locking pin 41 and the brake lever 4 can be connected by a bending arm. As shown in Figure 9, the second end of the brake lever 4 passes through the hole 101 of the fixing seat 10 and extends into the groove 110 provided on the brake drive member 1, and the second end of the brake lever 4 abuts against the bottom wall 1101 of the groove 110. The depth of the groove 110 gradually increases or decreases in the circumferential direction of the brake drive member 1, making the bottom wall 1101 of the groove 110 a sloped wall, wherein the depth direction of the groove 110 is parallel to the axial direction of the horizontal tube 2011. In some embodiments, there are two fixing seats 10, two brake levers 4, and two locking pins 41. The brake drive member 1 is located between the two fixing seats 10, and the axial position of the brake drive member 1 can be limited by the two fixing seats 10. The two brake levers 4 are respectively disposed between the fixing seat 10 and the wheel 203 on the same side of the brake drive member 1, and the brake drive member 1 is operably connected to the two locking pins 41 through the two brake levers 4 respectively. In some embodiments, when braking the wheel, the user presses down on the brake pedal 2, and the brake drive member 1 rotates with the brake pedal 2. The bottom wall 1101 of the slide groove 110 pushes the brake lever 4 towards the wheel 203, allowing the locking pin 41 to be inserted into the locking hole of the wheel 203, and the brake mechanism 100 reaches the braking state. In some embodiments, the brake mechanism 100 is also equipped with an elastic reset member (not shown in the figure). When it is necessary to release the brake wheel, the user can lift the brake pedal 2 with their toe, and the brake lever 4, under the action of the elastic reset member, drives the locking pin 41 to exit the locking hole of the wheel 203, and the brake mechanism 100 returns to the released state. The elastic reset member is, for example, a spring, which can be disposed between the brake lever 4 and the wheel seat 2010. In some embodiments not shown, when the annular portion 22 of the brake pedal 2 is fitted onto the brake drive member 1, the annular portion 22 and the brake drive member 1 can be tightly fitted together. Thus, when the brake pedal 2 is rotated under force, the brake drive member 1 rotates along with the brake pedal 2. In some embodiments, a material layer with a high coefficient of friction and capable of elastic deformation can be provided on the inner surface of the annular portion 22 and / or the outer surface of the brake drive member 1. The annular portion 22 and the brake drive member 1 abut against each other through this material layer, achieving a tight fit between the annular portion 22 and the brake drive member 1. Referring to Figure 3, in some embodiments, a rotation limiting structure 3 is provided between the annular portion 22 and the brake drive member 1. The rotation limiting structure 3 is used to limit the relative rotation between the annular portion 22 and the brake drive member 1 to prevent slippage between the brake drive member 1 and the brake pedal 2 when the brake pedal 2 is depressed. For example, in some embodiments, the rotation limiting structure 3 includes at least one positioning rib 31 and at least one positioning groove 32. The positioning rib 31 is disposed on the outer periphery of the brake drive member 1, and the positioning groove 32 is disposed on the inner wall of the annular portion 22. Each positioning rib 31 and each positioning groove 32 extends along the rotation axis XX. The positioning rib 31 and the corresponding positioning groove 32 cooperate with each other to limit the relative rotation between the annular portion 22 and the brake drive member 1. In some alternative embodiments, the positions of the positioning rib 31 and the positioning groove 32 on the brake drive member 1 and the annular portion 22 can be interchanged. In other alternative embodiments, the outer periphery of the brake drive member 1 can be provided with both the positioning rib 31 and the positioning groove 32, and the inner wall of the annular portion 22 can also be provided with both the positioning groove 32 and the positioning rib 31. In some embodiments, the rotation limiting structure 3 is configured with, for example, a plurality of positioning ribs 31 and a plurality of positioning grooves 32. The plurality of positioning ribs 31 are spaced apart in the circumferential direction, and the plurality of positioning grooves 32 correspond to the plurality of positioning ribs 31, thereby improving the force distribution between the annular portion 22 and the brake drive member 1. In some embodiments, the width and / or height of the plurality of positioning ribs 31 are, for example, equal. In some embodiments, the width and / or height of the plurality of positioning ribs 31 may be, for example, unequal as needed. Referring to Figures 3 and 7, in some embodiments, the plurality of positioning ribs 31 include, for example, a first positioning rib 311, a second positioning rib 312, and a third positioning rib 313. Referring to Figures 3 and 6, the plurality of positioning grooves 32 correspondingly include a first positioning groove 321, a second positioning groove 322, and a third positioning groove 323. Referring to Figure 7, the width W and height H of the first positioning rib 311 are both greater than the width and height of the second positioning rib 312, and the width W and height H of the first positioning rib 311 are also greater than the width and height of the third positioning rib 313. By setting the plurality of positioning ribs 31 to different sizes, it is convenient for the user to align the annular portion 22 and the brake drive member 1 so that the annular portion 22 fits onto the brake drive member 1. In some embodiments, at least one positioning rib 31 is disposed near the junction of the pedal portion 21 and the annular portion 22, so that the driving force from the pedal portion 21 can be transmitted to the brake drive member 1 at close range. In some embodiments not shown, by reasonably setting the positions of each positioning rib 31 and each positioning groove 32, and by selectively engaging each positioning rib 31 and each positioning groove 32, the annular portion 22 is positioned relative to the brake drive member 1, for example, in a first circumferential position and a second circumferential position. The first circumferential position corresponds, for example, to the normal state of the brake pedal 2, as shown in Figure 1, where the user can normally press the brake pedal 2 to brake the wheel 203. The second circumferential position corresponds to the retracted state of the brake pedal 2. When the mobile frame 200 is folded, the brake pedal 2 can be adjusted to the retracted state (for example, the retracted brake pedal 2 rotates 180 degrees relative to the normal state of the brake pedal 2 shown in Figure 2), so that the brake pedal 2 does not protrude excessively relative to the frame body 201, thereby reducing the folded volume of the mobile frame 200. When the brake pedal 2 is in the retracted state, the brake pedal 2 is still positioned on the brake drive member 1 and will not arbitrarily wobble relative to the cross tube 2011, which helps to reduce collision noise. It is understandable that when it is necessary to change the circumferential position of the annular part 22, the annular part 22 is first moved along the rotation axis XX to disengage from the brake drive member 1, then the annular part 22 is rotated to the desired circumferential position, and then the annular part 22 is moved along the rotation axis XX and re-fitted onto the brake drive member 1. Referring to Figure 6, in some embodiments, an axial positioning structure 5 is provided between the annular portion 22 and the brake drive member 1. The axial positioning structure 5 is used to limit the relative axial movement between the annular portion 22 and the brake drive member 1, preventing the annular portion 22 from accidentally detaching from the brake drive member 1. For example, in some embodiments, the axial positioning structure 5 includes an elastic arm 51 and a recess 52. The elastic arm 51 can be disposed on the brake drive member 1, and a protrusion 511 is provided at the end of the elastic arm 51. The recess 52 can be disposed on the annular portion 22, and the recess 52 and the protrusion 511 engage to limit the relative axial movement between the brake drive member 1 and the annular portion 22. It is understood that the number of elastic arms 51 and recesses 52 can be set as needed. In some alternative embodiments, the positions of the elastic arms 51 and recesses 52 on the brake drive member 1 and the annular portion 22 can be interchanged. In some alternative embodiments, both the brake drive member 1 and the annular portion 22 can be provided with elastic arms 51 and recesses 52. When the annular portion 22 is fitted onto the brake drive member 1, the protrusions 511 on each elastic arm 51 can be engaged with the corresponding recesses 52. Referring to Figures 4 and 6, in some embodiments, the recess 52 is a through hole provided on the annular portion 22. When it is necessary to remove the annular portion 22 from the brake drive member 1, the user presses the protrusion 511 by hand, causing the protrusion 511 to retract from the recess 52, and then the annular portion 22 can be easily moved along the rotation axis XX to separate the annular portion 22 from the brake drive member 1. It should be noted that in some embodiments, by reasonably setting the number and size of the elastic arms 51 and the corresponding recesses 52, the relative circumferential rotation between the annular portion 22 and the brake drive member 1 can be effectively restricted by the engagement of the protrusions 511 and the recesses 52. In this case, the aforementioned positioning ribs 31 and positioning grooves 32 may not be provided on the brake drive member 1 and the annular portion 22. Referring to Figure 11, in some embodiments, guide grooves 53 may also be provided on the inner wall of the annular portion 22. The number of guide grooves 53 corresponds to the number of elastic arms 51. The guide grooves 53 are used to guide the axial sliding of the elastic arms 51 to facilitate the alignment of the protrusions 511 and the recesses 52. It can be understood that in some alternative embodiments, when the recesses 52 are provided on the brake drive member 1 and the elastic arms 51 are provided on the annular portion 22, the guide grooves 53 for guiding the sliding of the elastic arms 51 are correspondingly provided on the outer periphery of the brake drive member 1. Referring again to Figure 11, in the direction in which the elastic arm 51 is inserted into the guide groove 53, the depth of the guide groove 53 gradually decreases. The depth of the guide groove 53 is the dimension of the guide groove 53 in the radial direction of the brake drive member 1. That is, the bottom wall 531 of the guide groove 53 is a sloping wall, so that the protrusion 511 of the elastic arm 51 can be inserted into the guide groove 53 more easily. It should be noted that the braking mechanism 100 provided in this embodiment of the invention is not limited to the examples described above, and may have other structures, as long as they help to reduce the impact of the brake pedal 2 on the dimensions of the folded frame body 201. For example, the braking mechanism 100 provided in this embodiment of the invention can be modified as follows. In some embodiments, the brake drive 1 and brake pedal 2 are arranged on the horizontal tube 2011 and can slide linearly along the radial direction of the horizontal tube 2011. In this case, the brake drive 1 and each brake lever 4 abut against each other through inclined surfaces. The up-and-down movement of the brake drive 1 corresponds to the left-and-right movement of each brake lever 4, which also allows the locking pin 41 to be inserted into or removed from the locking hole of the wheel 203. In this case, the brake pedal 2 may not have an annular portion 22, but can be detachably snapped to the brake drive 1 by any suitable structure. For example, one of the brake drive 1 and the brake pedal 2 has a male connector, such as a plug with a flexible arm, and the other has a female connector, such as a slot. The male and female connectors are detachably snapped together, so that the brake pedal 2 can be connected to or separated from the brake drive 1 as needed. In some embodiments, the brake actuator 1 and the brake pedal 2 may be an integral structure, and the brake pedal 2 may be folded so as not to protrude excessively relative to the folded frame body 201. In some embodiments not shown, the pedal portion 21 of the brake pedal 2 may include, for example, two sub-pedal portions connected by a pivot, the axis of which is perpendicular to the axis of rotation XX. The two sub-pedal portions may be rotated about the pivot to a folded state overlapping each other to reduce their volume, or to an open state for easy user access. In some embodiments, the brake lever 4 can be replaced by a cable or other suitable traction device passing through the horizontal tube 2011, which is also within the scope of protection of this invention. In some embodiments, when the brake lever 4 is replaced by a cable, one of the brake drive member 1 and the horizontal tube 2011 is provided with an axially extending groove, and the other is provided with an inclined groove. The first end of the cable is connected to a locking pin, and the second end of the cable is provided with a connecting pin, which is sleeved in the groove and the inclined groove. When the brake pedal 2 and the brake drive member 1 are pressed and rotated, the connecting pin moves along the groove under the drive of the inclined groove, thereby driving the locking pin to insert into the locking hole of the wheel 203 through the cable. In some embodiments, while the brake drive unit 1 is detachably connected to the brake pedal 2, the brake pedal 2 itself can also be folded, which is also within the scope of protection of this invention. It should be noted that, although the braking mechanism 100 in the above embodiments of the present invention is described using a mobile frame 200 for a child vehicle 1000 as an example, the application scope of the braking mechanism 100 is not limited to the child vehicle 100. It can also be applied to any other product with a mobile frame, such as supermarket carts, transport carts and other types of carts. The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made in accordance with the claims of the present invention should be included within the scope of the present invention. 1000: Child vehicle 100: Braking mechanism 200: Mobile frame 300: Seat 201: Frame body 202: Wheel 203: Wheel 2011: Cross tube 1: Brake drive component 2: Brake pedal 41: Locking pin 21: Pedal part 22: Ring part 4: Brake lever 10: Mounting seat 101: Hole 110: Slide groove 1101: Bottom wall 2010: Wheel seat 3: Rotation limiting structure 31: Positioning rib 32: Positioning groove 311: First positioning rib 312: Second positioning rib 313: Third positioning rib W: Width H: Height 203: Wheel 5: Axial positioning structure 51: Elastic arm 52: Recess 511: Protrusion 53: Guide groove 531: Bottom wall Figure 1 schematically shows a perspective view of a child vehicle according to an embodiment of the present invention, the child vehicle being equipped with a mobile frame provided according to an embodiment of the present invention; Figure 2 schematically shows a perspective view of the main body of the mobile frame provided according to an embodiment of the present invention in a folded state, the mobile frame being equipped with a braking mechanism provided according to an embodiment of the present invention; Figure 3 schematically shows a perspective view of the braking mechanism and the cross tube provided according to an embodiment of the present invention in one direction; Figure 4 schematically shows a perspective view of the braking mechanism and the cross tube provided according to an embodiment of the present invention in another direction; Figure 5 schematically shows a perspective view of a partial structure of the mobile frame provided according to an embodiment of the present invention, wherein the brake pedal and the brake drive component of the braking mechanism are separate; Figure 6 schematically shows a perspective view of the brake pedal and the brake drive component of the braking mechanism provided according to an embodiment of the present invention being separate; Figure 7 schematically shows a perspective view of the brake drive component of the braking mechanism provided according to an embodiment of the present invention mounted on the cross tube; Figure 8 schematically shows another perspective view of the brake drive component of the braking mechanism provided according to an embodiment of the present invention mounted on the cross tube; Figure 9 schematically shows a perspective view of the brake drive component of the braking mechanism provided according to an embodiment of the present invention. Figure 10 schematically shows a front view of the brake pedal of the brake mechanism provided according to an embodiment of the present invention; and Figure 11 schematically shows a perspective view of the brake pedal of the brake mechanism provided according to an embodiment of the present invention. 100: Braking mechanism 201: Main frame 203: Wheel 2011: Horizontal tube 1: Brake drive components 2: Brake pedal 21: Pedal section 22: Circular part 10: Fixture 101: Kong 2010: Wheels 31: Positioning Rib

Claims

1. A braking mechanism comprising a brake drive member and a brake pedal, the brake pedal being detachably connected to the brake drive member; the brake drive member having a rotation axis about which it rotates when driven by the brake pedal; the brake pedal comprising an annular portion fitted onto the brake drive member, and the annular portion being adapted to move along the rotation axis to disengage from the brake drive member; the annular portion having a first circumferential position and a second circumferential position relative to the brake drive member; when the annular portion is in the first circumferential position, the brake pedal is configured to drive the brake drive member to rotate; when the annular portion is in the second circumferential position, the brake pedal is rotatable relative to the brake drive member to a state where it does not protrude outwards.

2. The braking mechanism according to claim 1, wherein the brake drive and the brake pedal are engaged.

3. The braking mechanism according to claim 1 or 2, wherein one of the brake drive member and the brake pedal has a male connector and the other has a female connector, the male connector cooperating with the female connector.

4. The braking mechanism according to claim 1, wherein the brake pedal further comprises a pedal portion configured for direct pressing, and the annular portion is located on one side of the pedal portion.

5. The braking mechanism according to claim 1, wherein the annular portion and the brake drive member are in tight fit.

6. The braking mechanism according to claim 1, wherein a rotation limiting structure is provided between the annular portion and the brake drive member, the rotation limiting structure comprising: a positioning rib extending along the rotation axis, and a positioning groove cooperating with the positioning rib; wherein, The positioning rib is disposed on an outer periphery of the brake drive component, and the positioning groove is disposed on an inner wall of the annular portion; or the positioning rib is disposed on an inner wall of the annular portion, and the positioning groove is disposed on an outer periphery of the brake drive component.

7. The braking mechanism according to claim 6, wherein the number of positioning ribs is plurality of, the plurality of positioning ribs including a first positioning rib, a second positioning rib and a third positioning rib, the first positioning rib, the second positioning rib and the third positioning rib being spaced apart in the circumferential direction, and the number of positioning slots is plurality of, the plurality of positioning slots including a first positioning slot, a second positioning slot and a third positioning slot, the first positioning slot, the second positioning slot and the third positioning slot correspondingly cooperating with the first positioning rib, the second positioning rib and the third positioning rib respectively, and being configured to satisfy at least one of (a) and (b): (a) the widths of the first positioning rib, the second positioning rib and the third positioning rib are not equal; (b) the heights of the first positioning rib, the second positioning rib and the third positioning rib are not equal.

8. The braking mechanism according to claim 6, wherein there are multiple positioning ribs, the multiple positioning ribs are spaced apart in the circumferential direction, there are multiple positioning grooves, the multiple positioning grooves correspond one-to-one with the multiple positioning ribs and respectively cooperate, at least one of the height and width of the multiple positioning ribs is equal, or at least one of the height and width of the multiple positioning ribs is not equal.

9. A braking mechanism comprising a brake drive member and a brake pedal, the brake pedal being detachably connected to the brake drive member; the brake drive member having a rotation axis, the brake drive member rotating about the rotation axis when driven by the brake pedal; the brake pedal including an annular portion fitted onto the brake drive member, and the annular portion being adapted to move along the rotation axis to disengage from the brake drive member; an axial positioning structure provided between the annular portion and the brake drive member; the axial positioning structure comprising: an elastic arm extending from the rotation axis, one end of the elastic arm having a protrusion; and a recess engaging with the protrusion on the elastic arm; wherein... The elastic arm is disposed on the brake drive member, and the recess is disposed on the annular portion; or, the elastic arm is disposed on the annular portion, and the recess is disposed on the brake drive member.

10. The braking mechanism according to claim 9, further comprising a guide groove for guiding the sliding of the elastic arm; wherein, Corresponding to the elastic arm being disposed on the brake drive member, the guide groove is disposed on an inner wall of the annular portion; or, corresponding to the elastic arm being disposed on the annular portion, the guide groove is disposed on an outer periphery of the brake drive member.

11. The braking mechanism according to claim 10, wherein in one direction in which the resilient arm is inserted into the guide groove, a groove depth of the guide groove gradually decreases, the groove depth being a dimension of the guide groove in a radial direction of the brake drive member.

12. The braking mechanism according to claim 9, wherein the elastic arm is disposed on the brake drive member, and the recess is a through hole disposed on the annular portion.

13. A mobile frame equipped with a braking mechanism, the braking mechanism including a brake drive and a brake pedal, the brake pedal being detachably connected to the brake drive; the mobile frame further includes a cross tube and two wheels, wherein the cross tube is disposed between the two wheels, and both ends of the cross tube are rotatably connected to the two wheels respectively; the brake drive is sleeved on the cross tube; the brake pedal is configured to be rotatably mounted on the cross tube after being detached from the brake drive.

14. The mobile frame according to claim 13, wherein the braking mechanism further comprises a brake lever located between one of the two wheels and the brake drive member; a first end of the brake lever is configured to engage with a locking hole of the one wheel; the brake drive member is provided with a groove, the bottom wall of the groove being inclined, and a second end of the brake lever abutting against the bottom wall; when the brake drive member rotates about the axis, the bottom wall pushes the first end of the brake lever into the locking hole.

15. A child vehicle comprising a braking mechanism as described in any one of claims 1 to 12, or a mobile frame as described in claims 13 or 14.

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