Parking structure and child stroller

Abstract

This application discloses a parking structure, including: a locking structure capable of switching between a locked state that prevents wheel rotation and a released state that allows wheel rotation; and a drive structure connected to the locking structure; wherein the drive structure can be driven from an initial position to an active position and automatically return from the active position to the initial position in a reciprocating motion, and one reciprocating motion of the drive structure causes the locking structure to switch from the released position to the locked position or from the locked position to the released position. This application also discloses a child stroller.

Description

Technical Field

[0001] This application relates to a parking structure and a stroller having the parking structure. Prior Technology

[0002] In existing technology, the locking mechanism of a child stroller's wheel includes a wheel, a wheel axle rotatably connected to the wheel, and multiple annularly distributed locking grooves on the wheel. A parking pedal connected to the frame is located on one side of the wheel. When the pedal is pressed down, a parking block connected to the pedal inserts into the locking groove, preventing the wheel from rotating. To unlock, the parking pedal needs to be hooked upwards with the instep, disengaging the parking block from the locking groove. This locking mechanism involves two opposing movements, upward and downward, making it inconvenient to operate with the foot and prone to damaging and soiling shoes, especially when wearing shoes with exposed insteps, which can easily injure the operator's instep.

[0003] Therefore, a new parking structure is needed that allows for reliable locking and unlocking of the wheels by unidirectional downward depressing of the pedal. Summary of the Invention

[0004] A parking structure according to this application includes: a locking structure that can switch between a locked state that prevents the wheels from rotating and a released state that allows the wheels to rotate; and a drive structure connected to the locking structure; wherein the drive structure can be driven from an initial position to an active position and automatically return from the active position to the initial position to perform reciprocating motion, and one reciprocating motion of the drive structure causes the locking structure to switch from the released position to the locked position or from the locked position to the released position.

[0005] In one embodiment, the locking structure includes: a brake component connected to the drive structure and movable between a locked position and a released position by the drive structure to lock or release the wheel; and a locking component movable between a locking position and a non-locking position, wherein the locking component in the locking position holds the brake component in the locked position.

[0006] In one embodiment, the locking structure further includes an actuating member engaged with the braking member and the locking member, wherein the actuating member moves the locking member to the locking position as the braking member moves from the release position to the locking position, and the actuating member moves the locking member to the non-locking position as the braking member moves from the locking position to the release position.

[0007] In one embodiment, the locking member is disposed in a receiving cavity of a housing and is capable of reciprocating along a first axis between a first axial position near the brake member and a second axial position away from the brake member, and rotating about the first axis in a rotational direction, thereby switching between the first rotational position and the second rotational position; the receiving cavity of the housing is configured to allow the locking member in the first rotational position to move to the first axial position and the second axial position, while preventing the locking member in the second rotational position from moving to the first axial position; the actuating member is disposed between the brake member and the locking member and can abut against the locking member to cause the locking member to rotate along the rotational direction and move toward the second axial position.

[0008] In one embodiment, the locking member includes: a plurality of ratchet portions protruding toward the actuating member at one end of the locking member facing the actuating member and spaced apart circumferentially along the locking member, each ratchet portion including a first ratchet and a second ratchet arranged sequentially along the rotation direction; and a locking member groove disposed between adjacent ratchet portions and extending along the first axis; wherein a rib corresponding to the position of the locking member groove is provided on the inner wall of the receiving cavity, wherein the rib extends along the first axis such that: when the locking member is in the first rotational position, the locking member groove engages with the rib; when the locking member is in the second rotational position, the locking member groove disengages from the rib and one of the second ratchet teeth abuts against the end face of the rib.

[0009] In one embodiment, the locking member is cylindrical around the first axis, and each of the first ratchet and each of the second ratchet has a radially extending ratchet surface; the ratchet surfaces of the first ratchet and the second ratchet are inclined in the same direction relative to the first axis, the circumferential travel of the ratchet surface of the first ratchet is less than the circumferential travel of the ratchet surface of the second ratchet, and the front end of the ratchet surface along the rotation direction is closer to the actuating member, while the rear end along the rotation direction is farther away from the actuating member.

[0010] In one embodiment, the ratchet portion further includes: forming a first peak at the front end of the first ratchet; forming a second peak at the front end of the second ratchet; the first peak and the second peak being substantially located on the same cross-section relative to the first axis.

[0011] In one embodiment, the actuating component includes: a first end of the actuating component abutting against the pushing portion of the braking component; a second end of the actuating component opposite to the first end of the actuating component along the first axis; and a plurality of actuating teeth spaced circumferentially on the second end of the actuating component, protruding toward the locking component, and capable of abutting against the first ratchet and the second ratchet of the locking component.

[0012] In one embodiment, the actuating component is provided with an actuating tooth for each part of the first ratchet and the second ratchet; the tooth surface of each actuating tooth includes a first inclined surface and a second inclined surface connected to each other, the first inclined surface being located rearward along the rotation direction and having a larger slope and a smaller circumferential travel, and the second inclined surface being located frontward along the rotation direction and having a smaller slope and a larger circumferential travel.

[0013] In one embodiment, the tooth surface of the actuating tooth abuts against the ratchet surfaces of the first ratchet and the second ratchet.

[0014] In one embodiment, the radial dimension of the outer periphery of the actuating tooth is smaller than the radial dimension of the inner periphery of the rib.

[0015] In one embodiment, the actuating component is generally cylindrical and further includes: an actuating component flange, configured as a diameter-enlarged portion near the second end of the actuating component; and an actuating component groove, corresponding to the locking component groove, formed at the actuating component flange for engaging with the rib to limit the movement of the actuating component along the first axis.

[0016] In one embodiment, the braking component is disposed in the receiving cavity of the housing, is rotatable about a second axis between the locked position and the released position, is at least partially approximately fan-shaped, and includes: a raised portion that rises along the second axis towards one side on the disk surface of the fan shape; a recessed portion that is circumferentially adjacent to the raised portion and recessed relative to the raised portion towards the opposite side; a pushing portion located outside one end of the fan shape and configured to abut against the actuating component; and a second end engagement portion of the pulling member, disposed near the pushing portion, for engaging the second end of the pulling member. The device has two ends, and the first end of the traction member is engaged with the drive structure, so that the brake component can be pulled by the traction member and move between the locked position and the released position; the locking structure also includes a locking pin, which is configured to move along the second axis in the housing; when the brake component is in the locked position, the locking pin abuts against the raised part and extends out of the housing and inserts into the corresponding slot of the wheel to lock the wheel; when the brake component is in the released position, the locking pin abuts against the recessed part and retracts back into the housing to release the wheel.

[0017] In one embodiment, the brake component further includes a first indicator and a second indicator, respectively located on the fan-shaped outer peripheral surface of the brake component; the housing further includes a transparent or perforated indicator window, opened at the outer periphery corresponding to the first and second indicator of the brake component, for displaying one of the first and second indicator; wherein, when the brake component is in the released position, the first indicator is located at the indicator window, and when the brake component is in the locked position, the second indicator is located at the indicator window.

[0018] In one embodiment, the second axis is substantially perpendicular to the first axis and coincides with the axis of rotation of the wheel.

[0019] In one embodiment, the drive structure includes a traction member; the traction member includes: a first end of the traction member engaging with the drive structure; and a second end of the traction member engaging with the brake component; and

[0020] The pull member engages with the locking member; wherein, when the locking member is in the locking position, the locking member pulls the pull member through the pull member engaging portion to prevent the brake member from moving from the locked position corresponding to the locking position back to the released position.

[0021] In one embodiment, the parking structure further includes: a locking member elastic element disposed between the locking member and the housing or a wheel seat connected to the housing, biasing the locking member toward the first axial position; and a locking pin elastic element disposed between the locking pin and the housing, biasing the locking pin back into the housing.

[0022] In one embodiment, the drive structure includes: a sleeve laterally disposed on a crossbeam of a frame connected to a wheel; a pedal sleeved on the outside of the sleeve, capable of being stepped on and rotating around the sleeve, the pedal having a pedal groove on its inner wall, the pedal groove including an inclined portion extending laterally; and a slider slidably disposed in the sleeve along the lateral direction, the slider having a slider pin inserted therein, one end of the slider pin being inserted into the pedal groove and movable relative to it within the pedal groove; wherein, when the pedal is stepped on, the interaction between the slider pin and the pedal groove causes the slider to pull the pulling member toward the center of the sleeve.

[0023] In one embodiment, the drive structure further includes: a docking member, which and the pedal are respectively formed as semi-cylindrical bodies, so that they can dock with each other to form a tubular structure and are together sleeved on the outside of the sleeve; the inner side of the docking member is provided with a docking member groove that extends obliquely in the opposite direction to the pedal groove, and the other end of the slider pin is inserted into the docking member groove and can move relative to each other in the docking member groove.

[0024] A children's vehicle according to the present application includes: a frame; at least one wheel engaged under the frame; and a parking structure according to the present application. Simple Explanation of the Diagram

[0025] Figure 1 is a perspective view of the wheel assembly of the children's vehicle according to this application, wherein the pedals are in the initial position. The second figure is a three-dimensional view of the wheelset, in which the pedal is pressed down and is in the active position. Figure 3 is a perspective view of the wheelset from another angle, in which one side of each wheel has been removed to show the parking configuration. The fourth image is a 3D view of a wheel. Figure 5 is a perspective view of the wheelset, in which part of the housing of the wheels and the locking structure of the parking mechanism has been removed. Figure 6 is a magnified view of the area within the box in Figure 5. Figure 7 is a perspective view of the wheelset, in which the wheels, wheel hubs, and part of the housing have been removed, and the braking and actuation components are in the released position. Figure 8 is a magnified view of the area within the box in Figure 7. Figure 9 is a three-dimensional view of the wheelset, in which the wheels, wheel hubs, and part of the housing have been removed, and the braking and actuation components are in the locked position. Figure 10 is a magnified view of the area within the box in Figure 9. Figure 11 is a three-dimensional view of the shell. Figure 12 is a top view of the shell. Figure 13 is a three-dimensional view of the shell from another angle. Figure 14 is a partially cut-out perspective view of the housing, showing the locking pin, braking component, actuating component, and locking component disposed in the housing. Figure 15 is a perspective view of the actuating component and the locking component. Figure 16 is a three-dimensional view of the locking component. Figure 17 is a bottom view of the locking component. Figures 18A to 18E are bottom views illustrating the rotation process of the locking component. Figure 19 is a three-dimensional side view of the parking structure with part of the housing removed, showing the brake components and actuation components in the released position. Figure 20 is a partially cut-out side view of the parking structure, in which the braking components and actuation components are in the locked position. Figure 21 is a partially enlarged sectional view of the boxed portion of Figure 20, in which different types of section lines have been added to some parts for clarity. Figure 22 is a three-dimensional side view of the parking structure with part of the housing removed, in which the braking components and actuation components are in the locked position. Figure 23 is a perspective view of the wheelset, showing the pedals and mating parts in an exploded view. Figure 24 is a perspective view of the wheel assembly, showing the components of the drive structure in an exploded view. Figure 25 is a 3D view of the pedal. Figure 26 is a partially cutaway view of the drive structure, with the pedal removed to show the internal structure of the drive structure, and the slider in the unstretched position. Figure 27 is a front view of the drive structure, in which the pedal has been removed to show the internal structure of the drive structure, and the slider is in the pulled position. Figure 28 is a three-dimensional view of the drive structure, with the pedal in its initial position. Figure 29 is a three-dimensional view of the drive structure, in which the pedal is in the active position. Implementation

[0026] While this application has been illustrated and described with reference to specific embodiments, it should not be limited to the details shown. Rather, various modifications to these details may be made within the scope of equivalents of the claims and without departing from this application.

[0027] The descriptions of directions such as "front," "back," "up," and "down" used in this document are for ease of understanding only. This application is not limited to these directions and can be adjusted according to actual circumstances. Although this application has been described with reference to exemplary embodiments, the terminology used is illustrative and exemplary, and not restrictive.

[0028] The child vehicle according to this application is described in its entirety with reference to Figures 1 through 5. The child vehicle includes a frame 400 and a travel mechanism such as wheels 300 disposed below the frame 400. Only the portion of the frame 400 connected to a set of wheels 300 is shown in the views of this application; the remaining portions of the frame 400 and other components of the child vehicle are known in the art and therefore their description is omitted. This application discusses the parking structure of the child vehicle using the rear wheels as an example; it should be understood that this parking structure can also be applied to the front wheels.

[0029] The parking mechanism includes a locking structure 100 located at the wheel 300 and a drive structure 200 located at the frame 400. The drive structure 200 is connected to and controls the locking structure 100 via a tension member 250, such as a cable. The drive structure 200 includes a pedal 210. The pedal 210 is normally in the initial position as shown in Figure 1 and can be depressed by the user to reach the active position shown in Figure 2, simultaneously engaging the locking structure 100 to lock the wheel 300. When the user releases the pedal 210, the pedal 210 automatically returns to the initial position. When the user depresses the pedal 210 again, the pedal 210 engages the locking structure 100 to release the wheel 300. The initial position and active position of the pedal 210 can also be referred to as the initial position and active position of the drive structure 200. The process of the drive structure 200 being driven from the initial position to the active position and then automatically returning to the initial position is called one reciprocating motion of the drive structure 200. One reciprocating motion of the drive structure 200 causes the locking structure 100 to switch from the released position to the locked position, or vice versa. In other words, locking and unlocking the wheel 300 are both accomplished by pressing the pedal 210 (and releasing the pedal 210 to allow it to return to its original position automatically), thus avoiding contamination or injury to the user's instep.

[0030] Referring to Figures 3 and 4, the principle of locking and releasing wheel 300 by locking structure 100 is described. Locking structure 100 includes a housing 110 mounted below frame 400, to which wheel 300 is rotatably engaged via axle 310. A locking pin 130 is provided in housing 110, which can move parallel to axle 310 and insert into slot 320 of wheel 300 according to operation of drive structure 200, thus preventing rotation of wheel 300.

[0031] In this embodiment, two wheels 300 are arranged in a group on both sides of the housing 110. Therefore, the housing 110 is provided with two locking pins 130 (the other locking pin 130 is shown in Figure 8), which can lock the two wheels 300 respectively. It should be understood that only one wheel 300 can be provided on one side of the housing 110, and only one locking pin 130 can be provided accordingly. It should also be understood that the locking pin 130 can be replaced by other locking devices, such as friction plates, clamps, and other parking devices known in the art.

[0032] The locking structure 100 according to this application is described in detail with reference to Figures 5 to 10. The locking structure 100 includes a housing 110, a braking component 120, a locking pin 130, an actuating component 140, and a locking component 150. It may also include a wheel seat 160, a locking component elastic member 191, and a locking pin elastic member 192.

[0033] The housing 110 is used to house other components of the locking structure 100 and to mount the wheel 300. The housing 110 can be fixed to the underside of the frame 400 via the wheel seat 160 to allow the housing 110 to rotate relative to the frame 400. Alternatively, the housing 110 can be fixed directly to the underside of the frame 400, in which case the wheel seat 160 can be omitted.

[0034] The specific structure of housing 110 is described with reference to Figures 11 to 14. Housing 110 includes: an axle hole 111, a pin hole 112, an indicator window 113, a receiving cavity 114, a receiving cavity 115, and a wheel seat engagement portion 116. The axle hole 111 is a hole for receiving the axle 310. The receiving cavity 114 is disposed around the axle hole 111 for receiving the brake component 120. The receiving cavity 114 is a generally cylindrical cavity configured to allow the brake component 120 to rotate within a certain range. The pin hole 112 is disposed on one side of the axle hole 111, receiving a locking pin 130 and allowing axial movement of the locking pin 130. The receiving cavity 115 is a generally cylindrical cavity extending toward the frame 400.

[0035] A rib 115a is provided on the inner wall of the receiving cavity 115. The rib 115a protrudes inward along the inner wall of the receiving cavity 115 and extends along the first axis 193 of the locking structure 100. The rib 115a does not extend along the entire axial length of the receiving cavity 115, but is missing a section at one end near the frame 400. In this way, the rib 115a is always engaged in the actuation member groove 141 of the actuation member 140, allowing axial movement of the actuation member 140 while preventing its rotation. As for the locking member 150, the rib 115a only prevents the rotation of the locking member 150 when the locking member 150 is in a certain axial position, allowing the locking member 150 in the first rotation position to move to the first axial position and the second axial position, while preventing the locking member 150 in the second rotation position from moving to the first axial position, as will be described in detail below. A top bevel 115b is provided at the top end of the rib 115a. As the locking member 150 rotates and moves axially, the top inclined surface 115b can abut against the first ratchet 152 or the second ratchet 153 of the locking member 150 to push the locking member 150 to rotate. The locking member 150 moves axially and rotates under the action of the actuating member 140 and the rib 115a, thereby cyclically moving between the locking position and the non-locking position. When the locking member 150 is in the locking position, it holds the brake member 120 in the locked position, which will be described in detail below with reference to Figures 15, 18A to 18E.

[0036] The wheel seat engagement portion 116 is located on the housing 110 near the frame 400 and is used to engage with the wheel seat 160.

[0037] The indicator window 113 is provided through the outside of the receiving cavity 114 so that the user can observe the first indicator 121 or the second indicator 122 of the brake component 120.

[0038] Returning to Figures 5 through 10, the braking component 120, actuating component 140, and locking component 150 are all housed within the housing 110. The actuating component 140 is configured to reciprocate along a first axis 193, the locking component 150 is configured to reciprocate along the first axis 193 and rotate about the first axis 193 in a rotational direction 158 (as shown in Figure 15), and the braking component 120 is configured to rotate about a second axis 194. In this embodiment, the second axis 194 is substantially perpendicular to the first axis 193 and coincides with the axis of rotation of the wheel 300. In other embodiments, the first axis 193 and the second axis 194 may be at other angles, and the second axis 194 may not coincide with the axis of rotation of the wheel 300.

[0039] More specifically, the brake component 120 is disposed in the receiving cavity 114 (Figures 11 to 14) of the housing 110 and is rotatable about the second axis 194 between the locked position shown in Figure 10 and the released position shown in Figure 8. At least a portion of the brake component 120 is approximately fan-shaped. The brake component 120 includes: a raised portion 123, a recessed portion 124, a pressing portion 125, and a second end engagement portion 126 of the pulling member.

[0040] The rising portion 123 rises to one side along the second axis 194 on the fan-shaped disk surface. The recessed portion 124 is circumferentially adjacent to the rising portion 123 and is recessed relative to the rising portion 123 towards the opposite side. The pushing portion 125 is located on the outer side of one end of the fan shape and is configured to abut against the actuating member 140. The second end engagement portion 126 of the pulling member is provided near the pushing portion 125 for engaging the second end 252 of the pulling member 250. The first end 251 of the pulling member 250 is engaged with the drive structure 200, which will be described in detail below.

[0041] The locking pin 130 is movable within the housing 110 along the second axis 194. When the brake component 120 is in the locked position, the locking pin 130 abuts against the raised portion 123 and extends out of the housing 110 to insert into the corresponding slot 320 of the wheel 300 to lock the wheel 300. When the brake component 120 is in the released position, the locking pin 130 abuts against the recessed portion 124 and retracts back into the housing 110 to release the wheel 300. Only the raised portion 123 and the recessed portion 124 on one side of the brake component 120 are shown in the figure. It is easy to imagine that in an embodiment where a wheel 300 is provided on each side of the housing 110, a locking pin 130 is provided on each side of the brake component 120, and therefore a raised portion 123 and a recessed portion 124 are provided on each side of the brake component 120 respectively.

[0042] It should be understood that when the locking pin 130 is replaced by a parking device such as a friction plate or caliper, the form of the brake component 120 can also be changed accordingly, for example, by a cam or lever, as long as the parking device can be operated when pulled by the traction component 250.

[0043] In one embodiment, the brake component 120 further includes a first indicator 121 and a second indicator 122, respectively located on the fan-shaped outer peripheral surface of the brake component 120. The first indicator 121 and the second indicator 122 can have different visual effects; for example, the first indicator 121 can be green, and the second indicator 122 can be red. The housing 110 also includes a transparent or perforated indicator window 113 (Figures 11 to 14), which is opened on the outer periphery corresponding to the first indicator 121 and the second indicator 122 of the brake component 120, to display one of the first indicator 121 and the second indicator 122. When the brake component 120 is in the released position, the first indicator 121 is located at the indicator window 113; when the brake component 120 is in the locked position, the second indicator 122 is located at the indicator window 113. In this way, the user can easily observe the state of the locking structure 100.

[0044] When the brake component 120 is pulled by the pulling member 250, the pushing part 125 of the brake component 120 moves toward the actuating member 140 and pushes the actuating member 140 to move along the first axis 193. The actuating member 140 then pushes the locking member 150 to move and rotate. In the following text, when the brake component 120 is in the released position, the axial position of the actuating member 140 and the locking member 150 is referred to as the first axial position (the position shown in Figure 8), at which time the locking member 150 is relatively close to the brake component 120. When the brake component 120 is in the locked position, the axial position of the actuating member 140 and the locking member 150 is referred to as the second axial position (the position shown in Figure 10), at which time the locking member 150 is relatively far away from the brake component 120. For the locking component 150, the rotational position when the locking component groove 151 is engaged with the rib 115a is called the first rotational position, and the rotational position when the locking component groove 151 is disengaged from the rib 115a and the ratchet portion 156 of the locking component 150 (described in detail below) abuts against the end face of the rib 115a is called the second rotational position.

[0045] The locking component elastic element 191 is disposed between the locking component 150 and the housing 110 or the wheel seat 160 connected to the housing 110, biasing the locking component 150 toward a first axial position. The locking pin elastic element 192 is disposed between the locking pin 130 and the housing 110, biasing the locking pin 130 toward retraction into the housing 110.

[0046] The specific structures of the actuating member 140 and the locking member 150 are described with reference to Figures 15 to 17. The locking member 150 includes a plurality of ratchet portions 156, a locking member groove 151, and a through groove 157.

[0047] The ratchet portion 156 protrudes toward the actuator 140 at the end of the locking member 150 facing the actuator 140 and is spaced apart along the circumference of the locking member 150. Each ratchet portion 156 includes a first ratchet 152 and a second ratchet 153 arranged sequentially along the rotation direction 158.

[0048] A locking member groove 151 is disposed between adjacent ratchet portions 156, extending along the first axis 193, corresponding to the rib 115a of the housing 110. When the locking member 150 is in the first rotational position, the locking member groove 151 engages with the rib 115a. At this time, the rib 115a does not obstruct the axial movement of the locking member 150, allowing the locking member 150 to move between the first axial position and the second axial position. When the locking member 150 is in the second rotational position (the locking member 150 needs to reach the second axial position or the third axial position described below to disengage from the rotational lock of the rib 115a and rotate to the second rotational position), the rib 115a no longer engages with the locking member groove 151, but abuts against the ratchet groove 159. More specifically, the top inclined surface 115b of the rib 115a abuts against the ratchet groove 159, preventing the locking member 150 from axially moving back to the first axial position. Therefore, the housing 110 allows the locking member 150 in the first rotational position to move to the first axial position and the second axial position, while preventing the locking member 150 in the second rotational position (i.e., the locking position) from moving to the first axial position.

[0049] Referring to Figures 16 and 17, a through groove 157 is provided at a locking member groove 151 and penetrates the side wall of the locking member 150 so that the pulling member 250 can be inserted into the locking member 150.

[0050] More specifically, the locking member 150 is cylindrical around the first axis 193, and a plurality of ratchet portions 156 are spaced apart circumferentially along the locking member 150. Each first ratchet 152 and each second ratchet 153 has a radially extending ratchet surface. The ratchet surfaces of the first ratchet 152 and the second ratchet 153 are inclined in the same direction relative to the first axis 193. The circumferential travel of the ratchet surface of the first ratchet 152 is less than that of the ratchet surface of the second ratchet 153. The front end of each ratchet surface along the rotation direction 158 is closer to the actuating member 140 (see Figure 15), while the rear end along the rotation direction 158 is farther away from the actuating member 140.

[0051] The ratchet portion 156 further includes: a first peak 154 formed at the front end of the first ratchet 152; and a second peak 155 formed at the front end of the second ratchet 153. The first peak 154 and the second peak 155 are substantially located on the same cross-section relative to the first axis 193, or in other words, the first peak 154 and the second peak 155 are at the same axial position along the first axis 193. A ratchet groove 159 is also formed at the rear end of the second ratchet 153. The ratchet groove 159 is connected to the first peak 154 by an axially extending surface, so that when viewed axially (Figure 17), the ratchet groove 159 and the first peak 154 are approximately in the same position.

[0052] In this embodiment, three ratchet portions 156 are provided. It should be understood that in other embodiments, more or fewer ratchet portions 156 may be provided.

[0053] The actuating component 140 includes: an actuating component first end 142, an actuating component second end 143, and a plurality of actuating teeth 144, and may also include an actuating component groove 141 and an actuating component flange 145.

[0054] The first end 142 of the actuating component abuts against the pushing portion 125 of the braking component 120. The second end 143 of the actuating component is opposite to the first end 142 of the actuating component along the first axis 193. A plurality of actuating teeth 144 are circumferentially spaced on the second end 143 of the actuating component, protruding toward the locking component 150, and abutting against the first ratchet 152 and the second ratchet 153 of the locking component 150.

[0055] More specifically, the actuating component 140 is provided with an actuating tooth 144 for each part of the first ratchet 152 and the second ratchet 153. The tooth surface of each actuating tooth 144 includes a first inclined surface 144a and a second inclined surface 144b connected to each other. The first inclined surface 144a is located rearward along the rotation direction 158 and has a larger slope and a smaller circumferential travel. The second inclined surface 144b is located forward along the rotation direction 158 and has a smaller slope and a larger circumferential travel.

[0056] The tooth surface of the actuating tooth 144 abuts against the ratchet surfaces of the first ratchet 152 and the second ratchet 153, and the radial dimension of the outer periphery of the actuating tooth 144 is smaller than the radial dimension of the inner periphery of the rib 115a. That is, the actuating tooth 144 is located radially inside the rib 115a, so that when the actuating member 140 moves axially relative to the housing 110, the actuating tooth 144 and the rib 115a will not interfere with each other. In this way, the actuating tooth 144 can abut against the radial interior of the ratchet portion 156, and the rib 115a can abut against the radial exterior of the ratchet portion 156.

[0057] The actuating member 140 may be generally cylindrical. The actuating member flange 145 is configured as a diameter-enlarged portion near the second end 143 of the actuating member. The actuating member groove 141 and the locking member groove 151 are correspondingly formed at the actuating member flange 145 to engage with the rib 115a to limit the movement of the actuating member 140 along the first axis.

[0058] Referring to Figures 18A to 18E, and in conjunction with Figures 15 to 17, the relative motion between the housing 110 (rib 115a), the actuating member 140, and the locking member 150 is described. The positions of the aforementioned components are schematically shown in the figures and do not represent their specific shapes.

[0059] In Figure 18A, the locking structure 100 is in the released position, and the locking component 150 is in the non-locking position, that is, in the first axial position and the first rotational position.

[0060] Starting from the state shown in Figure 18A, when the user presses the pedal 210, the locking structure 100 reaches the state shown in Figure 18B. During this process, the pulling member 250 pulls the braking component 120, and the actuating component 140 and the locking component 150 begin to move towards the frame 400 under the push of the braking component 120. When the pedal 210 is pressed to the active position, the locking component 150 is in a transitional position between the locked position and the non-locked position, that is, it reaches a third axial position that is closer to the frame 400 than the second axial position. Meanwhile, if the pedal 210 is continued to be pressed, the locking component groove 151 will disengage from the rib 115a's rotational restriction effect on the locking component 150. The locking component groove 151 will disengage from the rib 115a's range. Due to the interaction between the ratchet portion 156 (first ratchet 152 and second ratchet 153) and the actuating tooth 144, the locking component 150 will rotate along the rotation direction 158 shown in the figure until the first peak 154 and the second peak 155 are locked in the groove 144c of the actuating tooth 144 along the direction indicated by the arrow 158a in Figure 15.

[0061] Then, when the user releases the pedal 210, the locking structure 100 reaches the state shown in Figure 18C. During the transition of the locking structure 100 from Figure 18B to Figure 18C, the actuating member 140 no longer abuts against the locking member 150, and the locking member 150 is biased towards the wheel 300 by the locking member elastic element 191. Because the locking member 150 has deviated from the first rotational position, the top inclined surface 115b of the rib 115a abuts against the ratchet surface of one of the second ratchet teeth 153, thus applying a thrust in the rotational direction 158 to the locking member 150. Therefore, the locking member 150 continues to rotate in the rotational direction 158 until the rib 115a is engaged in one of the ratchet grooves 159. At this point, the locking member 150 stops in the locked position, that is, the second rotational position and the second axial position, and stops the braking member 120 in the locked position (described in detail below).

[0062] Then, the user presses the pedal 210 again, and the locking structure 100 finally reaches the state shown in Figure 18D. During the process of the locking structure 100 moving from Figure 18C to Figure 18D, the actuating member 140 again abuts against the locking member 150. Since the locking member 150 has rotated a certain angle in the state of Figure 18C compared to the state of Figure 18B, the actuating member 140 can continue to push the locking member 150 to rotate along the rotation direction 158 until the first peak 154 and the second peak 155 are once again locked in the groove 144c of the actuating tooth 144.

[0063] Then, the user releases pedal 210 again, and locking structure 100 finally reaches the state shown in Figure 18E. During the transition of locking structure 100 from Figure 18D to Figure 18E, actuating member 140 no longer abuts against locking member 150, and locking member 150 is biased towards wheel 300 by locking member elastic member 191. The top inclined surface 115b of rib 115a abuts against the ratchet surface of one of the first ratchet teeth 152, thus applying a thrust to locking member 150 in the rotation direction 158. Therefore, locking member 150 continues to rotate in the rotation direction 158 until rib 115a is locked in locking member groove 151. At this point, locking member 150 is again in the first rotational position, i.e., locking member groove 151 again corresponds to the position of rib 115a, thus locking member 150 can return to the first axial position. In other words, the locking component 150 in Figure 18E is in the non-locking position, and the state of Figure 18E corresponds to the state of Figure 18A (but the locking component 150 has rotated by an angle of the ratchet portion 156), and the locking structure 100 has completed one action cycle.

[0064] Referring to Figures 19 to 22 will provide a better understanding of the operation of the locking structure 100. Specifically, as shown in Figures 20 and 21, the pulling member 250 is provided with a pulling member engaging portion 253, which engages with the locking member 150. Thus, when the locking member 150 is in the second axial position (i.e., the locked position), the locking member 150 pulls the pulling member 250 through the pulling member engaging portion 253. The pulling member 250 then pulls the second end engagement portion 126 of the braking member 120 through the second end 252 of the pulling member, preventing the braking member 120 from returning to the release position, thereby achieving the parking function.

[0065] The drive structure 200 is described in detail with reference to Figures 23 to 29. The drive structure 200 includes: a sleeve 240, a pedal 210, and a slider 230, and may also include a mating part 220 and a pedal elastic part 291.

[0066] The sleeve 240 is laterally arranged on the crossbeam 410 of the frame 400 connected to the wheel 300, for accommodating other components of the drive structure 200.

[0067] The pedal 210 is fitted onto the outside of the sleeve 240 and can be stepped on and rotated around the sleeve 240. The inner wall of the pedal 210 is provided with a pedal groove 211, which includes an inclined portion 211a extending laterally. In one embodiment, a vertical portion 211b extending perpendicular to the laterally extending end of the inclined portion 211a away from the wheel can also extend to facilitate the retention of the traction member 250.

[0068] The docking member 220 and the pedal 210 are each formed as a semi-cylindrical body, so that they can dock with each other to form a tubular structure, and together they are fitted onto the outside of the sleeve 240. As shown in Figures 24 and 26, the inner side of the docking member 220 is provided with a docking member groove 221, which extends at an angle in the opposite direction to the pedal groove 211.

[0069] The slider 230 is slidably disposed in the sleeve 240, and a slider pin 231 is inserted into the slider 230. The slider pin 231 extends approximately perpendicular to the lateral direction, and its two ends are respectively inserted into the pedal groove 211 and the mating part groove 221, and can move relative to each other in the pedal groove 211 and the mating part groove 221. The pulling member 250 is engaged with the slider 230 through the inside of the sleeve 240, and the first end 251 of the pulling member is connected to the first end engagement portion 232 of the pulling member of the slider 230, so the pulling member 250 can be pulled by the slider 230.

[0070] When pedal 210 is pressed, the interaction between slider pin 231 and pedal groove 211, and the interaction between slider pin 231 and mating groove 221, respectively cause both ends of slider pin 231 to move towards the center of sleeve 240, as shown in Figure 29. This ensures that the extension direction of slider pin 231 is perpendicular to the sliding direction (lateral) and does not rotate, thus ensuring smooth movement of slider pin 231. Therefore, slider 230 pulls pulling member 250 towards the center of sleeve 240.

[0071] The pedal elastic element 291 is disposed between the pedal 210 and the sleeve 240, and is used to bias the pedal 210 toward the pop-up position (initial position).

[0072] It should be understood that, depending on the usage requirements, the drive structure 200 can also be replaced by a handle or other device, as long as it can pull the traction component 250 according to the user's operation.

[0073] Since this application can be embodied in various forms without departing from the spirit and substance of this application, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted in the broadest possible sense within the scope defined by the claim. Therefore, all variations falling within the scope of the claim or its equivalents should be covered by the claim.

[0074] 100: Locking Structure 110: Shell 111: Axle hole 112: Pin Hole 113: Indicator Window 114: Reception cavity 115: Receptacle 115a: Rib 115b: Top slope 116: Wheel seat joint 120: Brake components 121: First Instruction Section 122: Second Instruction Section 123: Lifting section 124: Depression 125: Pushing section 126: Second end joint of the tensioning member 130: Locking pin 140: Actuating component 141: Actuator slot 142: First end of the actuating component 143: Second end of the actuating component 144: Actuating tooth 144a: First inclined plane 144b: Second inclined plane 144c: Groove 144d: Top 145: Actuating component flange 150: Locking component 151: Locking component groove 152: First ratchet 153: Second ratchet 154: First Peak 155: Second Peak 156: Ratchet 157: Through slot 158: Rotation direction 158a: Arrow 159: Ratchet groove 160: Wheel seat 191: Locking component elastic element 192: Locking pin elastic element 193: First Axis 194: Second Axis 200: Drive Structure 210: Pedal 211: Pedal Slide 211a: Oblique part 211b: Vertical section 220: Connecting parts 221: Slide groove for mating parts 230: Slider 231: Sliding pin 232: First end joint of the tensioning member 240: Sleeve 250: Pulling component 251: First end of the tensioning component 252: Second end of the tensioning component 253: Pull-out component locking part 291: Pedal elastic element 300: Wheels 310: Axle 320: Slot 400: Chassis 410: Crossbeam

Claims

1. A parking structure, comprising: The locking mechanism can switch between a locked position that prevents the wheel from rotating and a released position that allows the wheel to rotate. The locking structure includes a drive structure connected to the locking structure. The locking structure includes a locking pin movable between a locked position and a released position; a locking member and an actuating member; and a braking member movable between a locked position and a released position, which, when driven by the drive structure, pushes against the locking pin, the locking member and the actuating member, and when the locking member is in a locking position, it can hold the braking member in the locked position.

2. The parking structure as described in claim 1, wherein: When the pushing part of the braking component is pulled by the drive structure, it pushes the actuating component to move away from the wheel along the first axis, and simultaneously drives the locking pin to extend out of the locking structure to lock the wheel.

3. The parking structure as described in claim 2, wherein: The locking component can rotate between a first rotational position and a second rotational position; the actuating teeth of the actuating component abut against the locking component to drive the locking component to rotate to the second rotational position; when the locking component is in the second rotational position, the locking component abuts against the housing of the locking structure to prevent the brake component from resetting to the release position.

4. The parking structure as described in claim 3, wherein: The actuating teeth of the actuating component abut against the ratchet portion of the locking component to drive the locking component to rotate around the first axis in the rotational direction to the second rotational position; the ratchet groove of the locking component abuts against the rib of the housing to prevent the braking component from resetting to the release position.

5. The parking structure as described in claim 4, wherein: The ratchet portion of the locking component includes a first ratchet and a second ratchet, the circumferential travel of the first ratchet being less than that of the second ratchet; the tooth surface of the actuating tooth includes a first inclined surface and a second inclined surface, which respectively abut against the inclined ratchet surfaces of the first ratchet and the second ratchet to drive rotation.

6. The parking structure as described in claim 3, wherein: When the locking component is in the first rotational position, it engages with the rib of the housing, allowing it to move along the first axis between the first axial position and the second axial position; when the locking component is in the second rotational position, the rib abuts against the locking component to restrict the axial reset of the locking component.

7. The parking structure as described in claim 1, wherein: The brake component has a fan-shaped structure, with its raised portion pressing against the locking pin in the locked position and its recessed portion accommodating the locking pin in the released position; the locking pin is biased towards the retraction direction by the locking pin elastic element.

8. The parking structure as described in claim 7, wherein: The first and second indicators of the brake component are located on the outer periphery of the fan shape, and the locked or released status is displayed through the indicator window of the housing.

9. The parking structure as described in claim 1, wherein: The drive structure includes a pedal, a sleeve, and a slider; when the pedal is pressed down, the slider is driven to pull the traction component to control the braking component by means of the slider pin and the inclined part of the pedal groove.

10. The parking structure as described in claim 9, wherein: The two ends of the slider pin are respectively engaged with the pedal groove and the mating part groove. The tilt direction of the mating part groove is opposite to that of the pedal groove, so as to restrict the linear movement path of the slider.

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