Parking structure and baby stroller for children

Abstract

This application discloses a parking structure including a locking structure and a driving structure. The locking structure can be switched between a locking position that prevents the rotation of the wheel and a release position that allows the rotation of the wheel. The driving structure is connected to the locking structure. The driving structure is driven from an initial position to a movable position, automatically returns from the movable position to the initial position, and can perform a reciprocating motion. By the reciprocating motion of the driving structure, the locking structure is switched from the release position to the locking position, or from the locking position to the release position. Also disclosed is a baby stroller for children.

Description

Technical Field

[0001] The present application relates to a parking structure and a baby stroller having the parking structure.

Background Art

[0002] In the prior art, the wheel locking mechanism of a baby stroller is composed of a wheel, a wheel axle rotatably connected to the wheel, and a plurality of lock slots arranged in a ring shape on the wheel. A parking pedal connected to the frame is arranged on the side surface of the wheel. When the pedal is depressed, the parking block connected to the pedal is inserted into one of the lock slots, and the wheel cannot rotate. When unlocking is required, it is necessary to hook the parking pedal upward to release the parking block from the lock slot. Such a locking mechanism requires two reverse operations, an upward movement and a downward movement, during operation, which is inconvenient to operate with the feet. Especially when wearing shoes with exposed toes, it is easy to hurt or stain the toes.

[0003] Therefore, it is necessary to propose a parking structure that can reliably lock and unlock the wheels by stepping on the pedal in one direction.

Summary of the Invention

[0004] The parking structure of the present application includes a locking structure and a driving structure. The locking structure can be switched between a locking position that prevents the rotation of the wheel and a release position that allows the rotation of the wheel. The driving structure is connected to the locking structure, is driven from an initial position to a movable position, automatically returns from the movable position to the initial position, and can perform a reciprocating motion. Due to the reciprocating motion of the driving structure, the locking structure is switched from the release position to the locking position, or from the locking position to the release position.

[0005] In one embodiment, the locking structure includes a brake part and a clamping part. The brake part is connected to the driving structure and is driven by the driving structure to be movable between a locked position and a released position for locking or releasing the wheel. The clamping part can move between a blocking position and a non-blocking position, and the clamping part in the blocking position holds the brake part in the locked position.

[0006] In one embodiment, the actuating part is connected to the brake part and the clamping part. In the process of the brake part moving from the released position to the locked position, the actuating part moves the clamping part to the blocking position. In the process of the brake part moving from the locked position to the released position, the actuating part moves the clamping part to the non-blocking position.

[0007] In one embodiment, the clamping part is disposed in the accommodation chamber of the housing and can reciprocate between a first axial position close to the brake part and a second axial position away from the brake part along a first axis, can rotate along a rotational direction about the first axis, and can be switched between a first rotational position and a second rotational position. The accommodation chamber of the housing is configured to permit the clamping part in the first rotational position to move between the first axial position and the second axial position and to prevent the clamping part in the second rotational position from moving to the first axial position. The actuating part is disposed between the brake part and the clamping part and abuts against the clamping part to rotate the clamping part along the rotational direction to move it to the second axial position.

[0008] In one embodiment, the clamping portion includes a plurality of ratchet portions and a clamping portion slot. The plurality of ratchet portions protrude toward the operating portion at an end of the clamping portion facing the operating portion, and are spaced along the circumferential direction of the clamping portion. Each ratchet portion includes a first ratchet tooth and a second ratchet tooth arranged in order along the rotation direction. The clamping portion slot is arranged between adjacent ratchet portions and extends along the first axis. A rib corresponding to the position of the clamping portion slot is arranged on the inner wall of the accommodating chamber. The rib extends along the first axis. When the clamping portion is in the first rotation position, the clamping portion slot engages with the rib. When the clamping portion is in the second rotation position, the clamping portion slot separates from the rib, and one of the second ratchet teeth abuts against the end face of the rib.

[0009] In one embodiment, the clamping portion has a cylindrical shape surrounding the first axis. Each of the first ratchet teeth and each of the second ratchet teeth have a ratchet tooth surface extending in the radial direction. The ratchet tooth surfaces of the first ratchet teeth and the second ratchet teeth are both inclined in the same direction with respect to the first axis. The circumferential stroke of the ratchet tooth surface of the first ratchet tooth is smaller than the circumferential stroke of the ratchet tooth surface of the second ratchet tooth. The tip of each ratchet tooth surface in the rotation direction is close to the operating portion, and the rear end in the rotation direction is away from the operating portion.

[0010] In one embodiment, the ratchet portion further includes a first peak and a second peak. The first peak is formed at the tip of the first ratchet tooth, and the second peak is formed at the tip of the second ratchet tooth. The first peak and the second peak are substantially located in the same cross section with respect to the first axis.

[0011] In one embodiment, the operating part includes a first end of the operating part, a second end of the operating part, and a plurality of operating teeth. The first end of the operating part abuts against the pressing part of the braking part. The second end of the operating part faces the first end of the operating part along the first axis. The plurality of operating teeth are arranged at intervals in the circumferential direction at the second end of the operating part, protrude into the clamping part, and can abut against the first ratchet teeth and the second ratchet teeth of the clamping part.

[0012] In one embodiment, in the operating part, the operating teeth are provided corresponding to each part of the first ratchet teeth and the second ratchet teeth. The tooth surfaces of each of the operating teeth include a first inclined surface and a second inclined surface connected to each other. The first inclined surface is located rearward along the rotation direction, has a relatively large inclination and a relatively small circumferential stroke. The second inclined surface is located forward along the rotation direction, has a relatively small inclination and a relatively large circumferential stroke.

[0013] In one embodiment, the tooth surfaces of the operating teeth and the ratchet tooth surfaces of the first ratchet teeth and the second ratchet teeth are in contact with each other.

[0014] In one embodiment, the radial dimension of the outer periphery of each of the operating teeth is smaller than the radial dimension of the inner periphery of the rib.

[0015] In one embodiment, the operating part is substantially cylindrical in shape and further includes an operating part flange and an operating part slot. The operating part flange is arranged in the vicinity of the enlarged diameter part of the second end of the operating part. The operating part slot is provided in the operating part flange corresponding to the clamping part slot, engages with the rib, and restricts the movement of the operating part along the first axis.

[0016] In one embodiment, the brake part is disposed in the receiving cavity of the housing, rotatable about a second axis between the locking position and the release position, at least partially fan-shaped, and the brake part includes a rising part, a concave part, a pressing part, and a second end connecting part of the traction member. The rising part rises on one side along the second axis with a fan-shaped disk surface. The concave part is adjacent to the rising part in the circumferential direction and recesses toward the side opposite to the rising part. The pressing part is located outside one end of the fan shape and abuts against the operating part. The second end connecting part of the traction member is disposed near the pressing part and connected to the second end of the traction member of the traction member. The first end of the traction member of the traction member is connected to the drive structure. The brake part is pulled by the traction member and is movable between the locking position and the release position. The locking structure further includes a locking pin. The locking pin is movable in the housing along the second axis. When the brake part is in the locking position, the locking pin abuts against the rising part, protrudes from the housing, and is inserted into the corresponding slot of the wheel to lock the wheel. When the brake part is in the release position, the locking pin abuts against the concave part and retracts into the housing to release the wheel.

[0017] In one embodiment, the brake part further includes a first indicating part and a second indicating part respectively located on the outer peripheral surface of the fan shape of the brake part. The housing has a transparent or hollow indicator window that opens on the outer periphery corresponding to the first indicating part and the second indicating part of the brake part so as to display either one of the first indicating part and the second indicating part. When the brake part is in the release position, the first indicating part is located in the indicator window. When the brake part is in the locking position, the second indicating part is located in the indicator window.

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

[0019] In one embodiment, the drive structure includes a traction member, and the traction member includes a first end of the traction member, a second end of the traction member, and a traction member engaging portion. The first end of the traction member is connected to the drive structure, the second end of the traction member is connected to the brake portion, and the traction member engaging portion is engageable with the clamp portion. When the clamp portion is in the block position, the clamp portion pulls the traction member through the traction member engaging portion to prevent the brake portion from retreating from the lock position corresponding to the block position to the release position.

[0020] In one embodiment, the parking structure further includes a clamp portion elastic member and a lock pin elastic member. The clamp portion elastic member is disposed between the clamp portion and the housing or the wheel seat connected to the housing, biases the clamp portion to the first axial position, and the lock pin elastic member is disposed between the lock pin and the housing and biases the lock pin to retreat into the housing.

[0021] In one embodiment, the drive structure includes a sleeve, a pedal, and a slider. The sleeve is disposed laterally on a cross beam of the frame connected to the wheel. The pedal is sleeved outside the sleeve and stepped on to rotate around the sleeve. A pedal passage is provided on an inner wall of the pedal. The pedal passage includes an inclined portion extending perpendicular to the lateral direction. The slider is slidably disposed on the sleeve in the lateral direction. A slide pin is inserted into the slider, and one end of the slide pin is inserted into the pedal passage and provided to be movable relative to the pedal passage. When the pedal is depressed, due to the interaction between the slide pin and the pedal passage, the slider pulls the traction member of the drive structure toward the center of the sleeve.

[0022] In one embodiment, the drive structure further includes a contact member and a contact member passage. The contact member and the pedal are each formed as a semi-cylindrical shape and are sleeved outside the sleeve and contact each other to form a tubular structure. The contact member passage is disposed inside the contact member, extends obliquely in a direction opposite to the pedal passage, and the other end of the slide pin is inserted into the contact member passage and is movable relative to the contact member passage.

[0023] The baby stroller provided in the present application includes a frame, at least one wheel connected below the frame, and the parking structure of the present application.

Brief Description of the Drawings

[0024]

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Figure 18A

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Mode for Carrying Out the Invention

[0025] The present invention has been described above with specific embodiments, but the present invention is not limited to these. In addition, the present invention can be variously modified without departing from the gist thereof.

[0026] In this application, for convenience of understanding, only descriptions of directions such as "front", "rear", "upper", and "lower" are used. The present invention is not limited to these directions and can be adjusted according to the actual situation. Further, although the present invention of this application has been described using representative embodiments, these are examples and not restrictive.

[0027] With reference to FIGS. 1 to 5, the baby stroller according to the present application will be described. The baby stroller for children includes a frame 400, and a traveling mechanism such as wheels 300 is arranged below the frame 400. In the drawings of the present application, only a part of the frame 400 connected to the set of wheels 300 is shown, and the other parts of the frame 400 are known, so the description thereof is omitted. In the present application, the rear wheels are taken as an example to describe the parking structure of the baby stroller for children, but it is also applicable to the front wheels.

[0028] The parking structure includes a locking structure 100 provided on each wheel 300 and a driving structure 200 provided on the frame 400. The driving structure 200 is connected to the locking structure 100 via a traction member 250 such as a cable and controls the locking structure 100. The driving structure 200 includes a pedal 210. The pedal 210 is normally in the initial position shown in FIG. 1. The user can step on the pedal to reach the movable position shown in FIG. 2, and at the same time, the wheel 300 can be locked by the locking structure 100. When the user releases the pedal 210, the pedal 210 automatically returns to the initial position. Also, when the user steps on the pedal 210 again, the pedal 210 releases the wheel 300 via the locking structure 100. The initial and movable positions of the pedal 210 are also referred to as the initial and movable positions of the driving structure 200. The process of driving the driving structure 200 from the initial position to the movable position and then automatically returning to the initial position is called a reciprocating motion of the driving structure. Due to the reciprocating motion of the driving structure 200, the locking structure 100 switches from the release position to the lock position or from the lock position to the release position. That is, by stepping on the pedal 210 (and releasing the pedal 210 for automatic return) to perform the locking and unlocking operations of the wheel 300, it is possible to avoid contaminating or damaging the instep of the user's foot.

[0029] Referring to FIGS. 3 and 4, the principle by which the locking structure 100 locks and unlocks the wheel 300 will be described. The locking structure 100 includes a housing 110 attached below the frame 400. The wheel 300 is rotatably connected to the frame 400 via an axle 310. The locking pin 130 is provided inside the housing 110 and can be moved in a direction parallel to the axle 310 in response to the operation of the driving structure 200 and inserted into the slot 320 of the wheel 300, thereby preventing the rotation of the wheel 300.

[0030] In this embodiment, since the two wheels 300 are arranged in a set on both sides of the housing 110, there are two lock pins 130 in the housing 110 (see another lock pin 130 in FIG. 8), and the two lock pins 30 can lock the two wheels 300 respectively. It should be understood that only one wheel 300 is arranged on one side of the housing 110 and there is only one lock pin 130. It should also be understood that the lock pin 130 may be replaced by other locking devices such as some other parking devices known in the art, such as friction sheets and clamps.

[0031] Referring to FIGS. 5 to 10, the lock structure 100 according to the present application will be described in detail. The lock structure 100 includes a housing 110, a brake part 120, a lock pin 130, an actuator housing 110, a brake part 120, a lock pin 30, an operating part 140, and a clamp part 150, and may also include a wheel seat 160, a clamp part elastic member 191, and a lock pin elastic member 192.

[0032] The housing 110 houses other parts of the lock structure 100 and is used to attach the wheel 300. The housing 110 is fixed below the frame 400 via the wheel seat 160, and the housing 110 can be allowed to rotate with respect to the frame 400. The housing 110 may be directly fixed below the frame 400, and the wheel seat 160 can be omitted.

[0033] Referring to FIGS. 11 to 14, the specific configuration of the housing 110 will be described. The housing 110 includes a shaft hole 111, a pin hole 112, an indicator window 113, a receiving cavity 114, a receiving chamber 115, and a wheel seat connection 116. The shaft hole 111 is a hole for accommodating the axle 310. The receiving cavity 114 is disposed around the shaft hole 111 for receiving the brake portion 120. The receiving cavity 114 is a substantially cylindrical cavity and is arranged such that the brake portion 120 can rotate within a certain range. The pin hole 112 is provided on one side of the shaft hole 111 for accommodating the lock pin 130 and moving the lock pin 130 in the axial direction. The receiving chamber 115 is a substantially cylindrical cavity extending in the direction towards the frame 400.

[0034] The rib 115a is provided on the inner wall of the receiving chamber 115. The rib 115a protrudes inward along the inner wall of the receiving chamber 115 and extends along the first shaft 193 of the locking structure 100. The rib 115a does not extend over the entire axial length of the receiving chamber 115, but a part is missing at the end close to the frame 400. Therefore, the rib 115a always engages with the operating portion slot 141 of the operating portion 140, enables the axial movement of the operating portion 40, and prevents rotation. The clamp portion 150 can move the clamp portion 150 in the first axial position and the second axial position while preventing the rib 115a from preventing the rotation of the clamp portion 150 and preventing the clamp portion 150 in the second rotational position from moving to the first axial position only when the clamp portion 150 is in a specific axial position, which will be described in detail below. The top slope 115b is provided above the rib 115a. With the rotation and axial movement of the clamp portion 150, the top slope 115b can contact the first ratchet tooth 152 or the second ratchet tooth 153 on the clamp portion 150 and push and rotate the clamp portion 150. The clamp portion 150 moves axially and rotationally by the operating portion 140 and the rib 115a, circulates between the block position and the non-block position, and the clamp portion 150 in the block position holds the brake portion 120 in the locked position, which will be described in detail in connection with FIGS. 15 to 18.

[0035] The wheel seat connection 116 is disposed at a position close to the frame 400 in the housing 110 for connection to the wheel seat 160.

[0036] The indicator window 113 is provided to penetrate outside the receiving cavity 114 so that the user can easily observe the first indicating portion 121 or the second indicating portion 122 of the brake portion 120.

[0037] Returning to FIGS. 5 to 10, the brake portion 120, the operating portion 140, and the clamp portion 150 are all housed in the housing 110. The operating portion 140 is defined to reciprocate along the first shaft 193, the clamp portion 150 reciprocates along the first shaft 193, and is defined to be rotatable about the first shaft 193 in the rotational direction 158 (see FIG. 15), and the brake portion 120 is defined to rotate about the second shaft 194. In this embodiment, the second shaft 194 is substantially perpendicular to the first shaft 193 and coincides with the rotation axis of the wheel 300. In other embodiments, the first shaft 193 and the second shaft 194 may be at other angles, and the second shaft 194 may not coincide with the rotation axis of the wheel 300.

[0038] More specifically, the brake portion 120 is provided in the receiving cavity 114 of the housing 110 (see FIGS. 11 to 14) and can rotate about the second shaft 194 between the lock position shown in FIG. 10 and the release position shown in FIG. 8. The brake portion 120 is at least partially approximated to a sector shape. The brake portion 120 includes a rising portion 123, a concave portion 124, a pressing portion 125, and a second end connecting portion 126 of the traction member.

[0039] The rising portion 123 rises upward along the second axis 194 on the surface of the sector disk on one side. The concave portion 124 is circumferentially adjacent to the rising portion 123 and is recessed toward the other side facing the rising portion 23. The pressing portion 125 is located outside one end of the sector and is arranged to abut against the operating portion 140. The second end connecting portion 126 of the towing member is arranged near the pressing portion 125 to connect the second end 252 of the towing member 250 of the towing member. The first end 251 of the towing member 250 of the towing member is connected to the drive structure 200 described in detail below.

[0040] The locking pin 130 can move along the second axis 194 within the housing 110. When the brake portion 120 is in the locked position, the locking pin 130 abuts against the rising portion 123, protrudes from the housing 110, and is inserted into the corresponding slot 320 of the wheel 300, thereby locking the wheel 300. When the brake portion 120 is in the released position, the locking pin 130 abuts against the concave portion 124 and retracts into the housing 110 to release the wheel 300. Only the rising portion 123 and the concave portion 124 on the side of the brake portion 120 are shown. In an embodiment where wheels 300 are provided on both sides of the housing 110, since locking pins 130 are provided on both sides of the brake portion 120, it can be imagined that rising portions 123 and concave portions 124 are correspondingly provided on both sides of the brake portion 120.

[0041] When the locking pin 130 is replaced by a parking device such as a friction plate or a clamp, the form of the brake portion 120 can also be changed accordingly, such as a cam or a lever, and it should be understood that it is only necessary to be able to operate the parking device when pulled by the towing member 250.

[0042] In one embodiment, the brake unit 120 further includes a first indicating portion 121 and a second indicating portion 122 respectively located on the fan-shaped outer peripheral surface of the brake unit 120. The first indicating portion 121 and the second indicating portion 122 can have different visual effects. For example, the first indicating portion 123 may be green, and the second indicating portion 122 may be red. The housing 110 is open at the corresponding outer periphery of the first indicating portion 121 and the second indicating portion 122 of the brake unit 120, and further includes a transparent or hollow indicator window 113 (see FIGS. 11 to 14) for displaying one of the first indicating portion 121 and the second indicating portion 122. When the brake unit 120 is in the released position, the first indicating portion 121 is located in the indicator window 113, and when the brake unit 20 is in the locked position, the second indicating portion 122 is located in the indicator window 113. Therefore, the user can easily see the state of the locking structure 100.

[0043] When the brake unit 120 is pulled by the traction member 250, the pressing portion 125 of the brake unit 120 moves toward the operating portion 140 and pushes the operating portion 40 to move along the first shaft 193. The operating portion 140 also moves and rotates the clamping portion 150. Hereinafter, when the brake unit 120 is in the released position, the axial positions of the operating portion 140 and the clamping portion 150 are referred to as the first axial position (the position shown in FIG. 8). At this time, the clamping portion 150 is relatively close to the brake unit 120. When the brake unit 120 is in the locked position, the axial position of the operating portion 140 and the axial position of the clamping portion are referred to as the second axial position (the state shown in FIG. 10). At this time, the clamping portion 150 is relatively far from the brake unit 120. Regarding the clamping portion 150, the rotational position where the clamping portion slot 151 and the rib 115a are engaged is referred to as the first rotational position, and the rotational position where the clamping portion slot 151 and the rib 115a are disengaged and the ratchet portion 156 (described in detail below) of the clamping portion 150 abuts against the end face of the rib 115a is referred to as the second rotational position.

[0044] The clamp part elastic member 191 is provided between the clamp part 150 and the housing 110 or the wheel seat 160 connected to the housing 110, and biases the clamp part 150 to the first axial position. The lock pin elastic member 192 is disposed between the lock pin 130 and the housing 110, and biases the lock pin 130 to pull it back into the housing 110.

[0045] Referring to FIGS. 15 to 17, the specific configurations of the operating part 140 and the clamp part 150 will be described. The clamp part 150 includes a plurality of ratchet parts 156, a clamp part slot 151, and a through slot 157.

[0046] The ratchet part 156 protrudes toward the operating part 140 at an end facing the operating part 140 of the clamp part 150, and is arranged at intervals in the circumferential direction of the clamp part 150. Each ratchet part 156 includes a first ratchet tooth 152 and a second ratchet tooth 153 arranged in order along the rotation direction 158.

[0047] The clamp portion slot 151 is provided between adjacent ratchet portions 156 and extends along a first axis 193 corresponding to the rib 115a of the housing 110. When the clamp portion 150 is in the first rotational position, the clamp portion slot 151 engages with the rib 115a. At this time, the rib 115a does not inhibit the axial movement of the clamp portion 150, allowing the clamp portion 150 to move between the first axial position and the second axial position. When the clamp portion 150 is in the second rotational position (the clamp portion 150 needs to first reach the second axial position or the third axial position where it can rotate out of the rotational lock of the rib 115a and rotate to the second rotational state as will be described later), the rib 115a does not engage with the clamp portion slot 151 and abuts against the ratchet slot 159. More specifically, the top slope 115b of the rib 115a abuts against the ratchet slot 159 to prevent the clamp portion 150 from moving axially to the first axial position. Therefore, the housing 110 moves the clamp portion 150 in the first rotational position between the first axial position and the second axial position, and prevents the clamp portion 150 in the second rotational position (i.e., the barrier position) from moving to the first axial position.

[0048] Referring to FIGS. 16 - 17, the through slot 157 is provided in one of the clamp portion slots 151 and penetrates the side wall of the clamp portion 150 to facilitate the insertion of the traction member 250 into the clamp portion 150.

[0049] More specifically, the clamp portion 150 has a cylindrical shape surrounding the first shaft 193. The plurality of ratchet portions 156 are arranged at intervals in the circumferential direction of the clamp portion 150. Each first ratchet tooth 152 and each second ratchet tooth 153 have a ratchet tooth surface extending in the radial direction. The ratchet tooth surfaces of the first ratchet teeth 152 and the second ratchet teeth 153 are both inclined in the same direction with respect to the first shaft 193. The circumferential stroke of the ratchet tooth surface of each first ratchet tooth 152 is smaller than the circumferential stroke of the ratchet tooth surface of each second ratchet tooth 153. The tip of each ratchet tooth surface in the rotational direction 158 is close to the operating portion 140 (see FIG. 15), and the rear end in the rotational direction 158 is away from the operating portion 40.

[0050] The ratchet portion 156 further includes a first peak 154 formed at the tip of the first ratchet tooth 152 and a second peak 155 formed at the tip of the second ratchet tooth 153. The first peak 154 and the second peak 155 are located in substantially the same cross-section with respect to the first shaft 193. In other words, the first peak 154 and the second peak 55 are located in the same axial direction along the first shaft 193. A ratchet slot 159 is also formed at the rear end of each second ratchet tooth 153. Since the ratchet slot 159 and the first peak 154 are connected via an axially extending surface, when viewed axially (FIG. 17), the ratchet slot 159 is located at substantially the same position as the first peak 154.

[0051] It should be understood that in this embodiment, three ratchet portions 156 are provided, and in other embodiments, more or fewer ratchet portions 156 can be provided.

[0052] The operating portion 140 includes an operating portion first end 142, an operating portion second end 143, and a plurality of operating teeth 144, and may also include an operating portion slot 141 and an operating portion flange 145.

[0053] The end 142 of the first actuating part abuts against the pressing part 125 of the braking part 120. The end 143 of the second actuating part faces the end 142 of the first actuating part along the first axis 193. A plurality of actuating teeth 144 protrude toward the clamping part 150 and are arranged at the end 143 of the second actuating part with circumferential intervals so as to abut against the first ratchet teeth 152 and the second ratchet teeth 153 of the clamping part 150.

[0054] More specifically, actuating teeth 144 are arranged at respective portions corresponding to the first ratchet teeth 152 and the second ratchet teeth 153 of the actuating part 140. The tooth surfaces of the respective actuating teeth 144 include a first inclined surface 144a and a second inclined surface 144b connected to each other. The first inclined surface 144a is located at the rear along the rotation direction 158 and has a relatively large inclination and a relatively small circumferential stroke, and the second inclined surface 144b is located at the front along the rotation direction 156 and has a relatively small inclination and a relatively large circumferential stroke.

[0055] The tooth surfaces of the actuating teeth 144 and the ratchet tooth surfaces of the first ratchet teeth 152 and the second ratchet teeth 153 are in contact with each other. The radial dimension of the outer periphery of each actuating tooth 44 is smaller than the radial dimension of the inner periphery of the rib 115a, that is, the actuating tooth 114 is located radially inside the rib 115a, and when the actuating part 140 moves axially with respect to the housing 110, the actuating tooth 144 and the rib 115a do not interfere with each other. Therefore, the actuating tooth 144 can abut against the inside in the radial direction of the ratchet part 156, and the rib 115a can abut against the outside in the radial direction of the ratchet part 156.

[0056] The actuating part 140 may have a substantially cylindrical shape. The actuating part flange 145 is provided in the vicinity of the enlarged diameter part of the end 143 of the second actuating part. The actuating part slot 141 is arranged corresponding to the clamping part slot 151 in the actuating part flange 145 so as to engage with the rib 115a, and restricts the movement of the actuating part 140 along the first axis.

[0057] Regarding the relative movement among the housing 110 (rib 115a), the operating part 140, and the clamping part 150, it will be described in combination with FIGS. 18A - E and FIGS. 15 - 17. This illustration schematically shows the positions of the above members, but does not show the specific shapes.

[0058] In FIG. 18A, the lock structure 100 is in the release position. At this time, the clamping part 150 is in the non - blocking position, that is, the first axial position and the first rotational position.

[0059] When the user steps on the pedal 210 from the state shown in FIG. 18A, the lock structure 100 reaches the position shown in FIG. 18B. In this process, the traction member 250 pulls the brake part 120, and the operating part 140 and the clamping part 150 are pushed by the brake part 120 and start to move toward the frame 400. When the pedal 210 is stepped into the movable position, the clamping part 150 reaches the transition position between the blocking position and the non - blocking position, that is, the clamping part 150 reaches the third axial position closer to the frame 400 than the second axial position. On the other hand, when the pedal 210 is continuously stepped on, the clamping part slot 151 is separated from the rotation restriction of the rib 115a on the clamping part 150, and the clamping part slot 151 is separated from the range of the rib 115a. Therefore, due to the interaction between the ratchet part 156 (the first ratchet teeth 152 and the second ratchet teeth 153) and the operating teeth 144, the clamping part 150 rotates in the rotational direction 158 in the figure until the first peak 154 and the second peak 155 are clamped in the groove 144c of the operating teeth 44 along the direction indicated by the arrow 158a in FIG. 15.

[0060] After the user releases the pedal 210, the lock structure 100 assumes the state shown in FIG. 18C. In the process of the lock structure 100 from FIG. 18B to FIG. 18C, the operating part 140 no longer abuts against the clamping part 150, and the clamping part 150 is biased toward the wheel 300 by the clamping part elastic member 191. Since the clamping part 150 is disengaged from the first rotational position, the top slope 115b of the rib 115a abuts against one of the ratchet tooth surfaces of the second ratchet teeth 153 and applies a thrust to the clamping part 150 along the rotational direction 158. Thus, the clamping part 150 continues to rotate along the rotational direction 156 until the rib 115a is clamped in one of the ratchet slots 159. At this time, the clamping part 150 stops at the blocking position, that is, the second rotational position and the second axial position, and the brake part 120 stops at the locking position (which will be described in detail below).

[0061] Thereafter, the user steps on the pedal 210 again, and the lock structure 100 finally reaches the state shown in FIG. 18D. In the process of the lock structure 100 from FIG. 18C to FIG. 18D, the operating part 140 abuts against the clamping part 150 again. Since the state of the clamping part 150 in FIG. 18C is rotated in angle compared with the state in FIG. 18B, the operating part 140 can push the clamping part 150 and rotate it in the rotational direction 158 until the first peak 154 and the second peak 155 are clamped in the groove 144c of the operating tooth 144.

[0062] After that, the user releases the pedal 210 again, and the lock structure 100 finally reaches the state shown in FIG. 18E. In the process of the lock structure 100 from FIG. 18D to FIG. 18E, the operating part 140 no longer abuts against the clamping part 150, and the clamping part 150 is biased toward the wheel 300 by the clamping part elastic member 191. The top slope 115b of the rib 115a abuts against one of the ratchet tooth surfaces of the first ratchet tooth 152, and applies a thrust to the clamping part 150 along the rotation direction 158 until the rib 115a is clamped in the clamping part slot 151. Therefore, the clamping part 150 continues to rotate in the rotation direction 158 until the rib 115a is clamped in the clamping part slot 151. At this time, since the clamping part 150 is again in the first rotational position, that is, the position where the clamping part slot 151 corresponds to the rib 115a again, the clamping part 150 can return to the first axial position. That is, the clamping part 150 in FIG. 18E is in the unlocked position, the state in FIG. 18E corresponds to the state in FIG. 18A (however, the clamping part 150 rotates the ratchet part 156 by an angle), and the lock structure 100 completes the operation cycle.

[0063] Referring to FIGS. 19 to 22, the operation procedure of the lock structure 100 can be better understood. Specifically, as shown in FIGS. 20 and 21, the traction member 250 is provided with a traction member engaging portion 253 that engages with the clamping part 150. Therefore, when the clamping part 150 is in the second axial position (i.e., the closed position), the clamping part 150 pulls the traction member 250 through the traction member joint portion 253, and the traction member 250 pulls the traction member second end joint portion 126 of the brake part 120 through the traction member second end 252, preventing the brake part 120 from returning to the released position and realizing the parking function.

[0064] Referring to FIGS. 23 to 29, the drive structure 200 will be described in detail. The drive structure 200 includes a sleeve 240, a pedal 210, and a slider 230, and may also include a contact member 220 and a pedal elastic member 291.

[0065] The sleeve 240 is disposed horizontally on the cross beam 410 of the frame 400 connected to the wheel 300 to accommodate other parts of the drive structure 200.

[0066] The pedal 210 is sleeved outside the sleeve 240 and can be stepped on to rotate around the sleeve 240. The pedal passage 211 is disposed on the inner wall of the pedal 210 including an inclined portion 211a that extends obliquely in the horizontal direction. In one embodiment, the vertical portion 211b that extends perpendicularly in the horizontal direction can also extend from one end of the inclined portion 211a away from the wheel to maintain the traction of the traction member 250.

[0067] The abutting member 220 and the pedal 210 are abutted against each other to form a tubular structure so that they can be sleeved together outside the sleeve 240, and are respectively formed as semi-cylindrical columns. As shown in FIGS. 24 and 26, the abutting member passage 221 is provided inside the abutting member 220, and the abutting member passage 221 extends obliquely in a direction opposite to the pedal passage 211.

[0068] A slider 230 is provided on the sleeve 240 so as to be slidable in the horizontal direction, and a slider pin 231 is inserted into the slider 230. The extending direction of the slide pin 231 is substantially perpendicular to the horizontal direction, and both ends of the slide pin 231 are inserted into the pedal passage 211 and the abutting member passage 221 respectively, and are relatively movable between the pedal passage 211 and the abutting member groove 221. The traction member 250 is connected to the slider 230 through the inside of the sleeve 240, and the first end 251 of the traction member is connected to the traction member first end connection portion 232 of the slider 230, so that the traction member 250 can be pulled by the slider 230.

[0069] When the pedal 210 is depressed, the interaction between the slide pin 231 and the pedal passage 211, and the interaction between the slide pin 231 and the contact member passage 221 cause both ends of the slide pin 231 to move toward the center of the sleeve 240, as shown in FIG. 29. For this reason, it is ensured that the extending direction of the slide pin 231 is perpendicular to the sliding direction (lateral direction) and does not rotate, and smooth movement of the slide pin 231 is also ensured. Accordingly, the slider 230 pulls the traction member 250 toward the center of the sleeve 240.

[0070] The pedal elastic member 291 is disposed between the pedal 210 and the sleeve 240 in order to bias the pedal 210 to the rebound position (initial position).

[0071] It should be understood that according to the requirements in use, the drive structure 200 may be replaced with a handle or other device as long as the traction member 250 can be pulled in response to the user's operation.

[0072] Since the present application can be embodied in various forms without departing from the spirit and essence of the present application, the above-described embodiments are not limited to any of the above details, and should be interpreted as widely as possible within the scope defined by the claims. Therefore, it should be understood that all changes falling within the scope of the claims or the equivalent thereof should be covered by the claims.

Description of Reference Numerals

[0073] 100 Lock structure 110 Housing 111 Axle hole 112 Pin hole 113 Indicator window 114 Receiving cavity 115 Accommodation chamber 115a Rib 115b Top slope 116 Wheel seat connection 120 Brake portion 121 First indicating portion 122 Second instruction part 123 Rising part 124 Concave part 125 Pressing part 126 Second end connection part of traction member 130 Lock pin 140 Actuating part 141 Actuating part slot 142 First end of actuating part 143 Second end of actuating part 144 Actuating tooth 144a First inclined plane 144b Second inclined plane 144c Groove 144d Upper part 145 Actuating part flange 150 Clamping part 151 Clamping part slot 152 First ratchet tooth 153 Second ratchet tooth 154 First peak 155 Second peak 156 Ratchet part 157 Through slot 158 Rotation direction 158a Engagement direction 159 Ratchet slot 160 Wheel seat 191 Clamping part elastic member 192 Lock pin elastic member 193 First shaft 194 Second shaft 200 Driving structure 210 Pedal 211 Pedal passage 211a Inclined part 211b Vertical part 220 Contact member 221 Contact member passage 230 Slider 231 Slide pin 232 First end connection part of traction member 240 Sleeve 250 Traction member First end of the traction member 251 Second end of the traction member 252 Engagement portion of the traction member 253 Pedal elastic member 291 Wheel 300 Axle 310 Slot 320 Frame 400 Cross beam 410

Claims

1. A parking structure including a lock structure (100) and a drive structure (200), wherein the lock structure (100) can be switched between a lock position for preventing rotation of the wheel (300) and a release position for allowing rotation of the wheel (300), the drive structure (200) is connected to the lock structure (100), the drive structure (200) is driven from an initial position to a movable position, automatically returns from the movable position to the initial position, and can perform a reciprocating motion, and the reciprocating motion of the drive structure (200) switches the lock structure (100) from the release position to the lock position or from the lock position to the release position A parking structure characterized by the above.

2. The lock structure (100) includes a brake part (120) and a clamp part (150), the brake part (120) is connected to the drive structure (200), and is driven by the drive structure (200) to be movable between a lock position and a release position to lock or release the wheel (300), the clamp part (150) can move between a block position and a non-block position, and the clamp part (150) in the block position holds the brake part (120) in the lock position The parking structure according to claim 1, characterized by the above.

3. The lock structure (100) further includes an operating part (140), the operating part (140) is connected to the brake part (120) and the clamp part (150), and in the process of the brake part (120) moving from the release position to the lock position, the operating part (140) moves the clamp part (150) to the block position, and in the process of the brake part (120) moving from the lock position to the release position, the operating part (140) moves the clamp part (150) to the non-block position The parking structure according to claim 2, characterized by the above.

4. The clamp part (150) is disposed in the accommodation chamber (115) of the housing (110), can reciprocate between a first axial position close to the brake part (120) and a second axial position away from the brake part (120) along a first shaft (193), can rotate along a rotation direction (158) about the first shaft (193), and can be switched between the first rotation position and the second rotation position, The accommodation chamber (115) of the housing (110) permits the clamp portion (150) in the first rotational position to move between the first axial position and the second axial position, and is configured to prevent the clamp portion (150) in the second rotational position from moving to the first axial position. The actuating portion (140) is disposed between the brake portion (120) and the clamp portion (150), abuts against the clamp portion (150), and rotates the clamp portion (150) along the rotational direction (158) to move it to the second axial position. The parking structure according to claim 3, characterized in that.

5. The clamp portion (150) includes a plurality of ratchet portions (156) and a clamp portion slot (151). The plurality of ratchet portions (156) project toward the actuating portion (140) at an end of the clamp portion (150) facing the actuating portion (140), are spaced along the circumferential direction of the clamp portion (150), and each ratchet portion (156) includes a first ratchet tooth (152) and a second ratchet tooth (153) arranged in order along the rotational direction (158). The clamp portion slot (151) is disposed between adjacent ratchet portions (156) and extends along the first axis. A rib (115a) corresponding to the position of the clamp portion slot (151) is disposed on the inner wall of the accommodation chamber (115), and the rib (115a) extends along the first axis. When the clamp portion (150) is in the first rotational position, the clamp portion slot (151) engages with the rib (115a), and when the clamp portion (150) is in the second rotational position, the clamp portion slot (151) separates from the rib (115a), and one of the second ratchet teeth (153) abuts against the end face of the rib (115a). The parking structure according to claim 4, characterized in that.

6. The clamp portion (150) has a cylindrical shape surrounding the first axis (193), and each of the first ratchet teeth (152) and each of the second ratchet teeth (153) have a ratchet tooth surface extending in the radial direction. The ratchet tooth surfaces of the first ratchet tooth (152) and the second ratchet tooth (153) both incline in the same direction with respect to the first axis (193), the circumferential stroke of the ratchet tooth surface of the first ratchet tooth (152) is smaller than the circumferential stroke of the ratchet tooth surface of the second ratchet tooth (153), the tip of each ratchet tooth surface in the rotational direction (158) is close to the operating part (140), and the rear end in the rotational direction (158) is away from the operating part (140). The parking structure according to claim 5, characterized in that.

7. The ratchet part (156) further includes a first peak (154) and a second peak (155). The first peak (154) is formed at the tip of the first ratchet tooth (152). The second peak (155) is formed at the tip of the second ratchet tooth (153). The first peak (154) and the second peak (155) are substantially located in the same cross-section with respect to the first axis (193). The parking structure according to claim 5, characterized in that.

8. The operating part (140) includes a first end (142) of the operating part, a second end (143) of the operating part, and a plurality of operating teeth (144). The first end (142) of the operating part abuts against the pressing part (125) of the brake part (120). The second end (143) of the operating part faces the first end (142) of the operating part along the first axis (193). The plurality of operating teeth (144) are arranged at intervals in the circumferential direction at the second end (143) of the operating part, protrude into the clamp part (150), and can abut against the first ratchet tooth (152) and the second ratchet tooth (153) of the clamp part (150). The parking structure according to claim 5, characterized in that.

9. In the operating part (140), the operating teeth (144) are provided corresponding to each part of the first ratchet tooth (152) and the second ratchet tooth (153). The tooth surfaces of the respective actuating teeth (144) include 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), has a relatively large inclination and a relatively small circumferential stroke, and the second inclined surface (144b) is located forward along the rotation direction (158), has a relatively small inclination and a relatively large circumferential stroke. The parking structure according to claim 8, characterized in that.

10. The tooth surfaces of the actuating teeth (144), the ratchet tooth surfaces of the first ratchet teeth (152) and the second ratchet teeth (153) are in contact with each other. The parking structure according to claim 5, characterized in that.

11. The radial dimension of the outer periphery of each of the actuating teeth (144) is smaller than the radial dimension of the inner periphery of the rib (115a). The parking structure according to claim 5, characterized in that.

12. The actuating part (140) has a substantially cylindrical shape and further includes an actuating part flange (145) and an actuating part slot (141). The actuating part flange (145) is arranged near the enlarged diameter part of the second end (143) of the actuating part. The actuating part slot (141) is provided in the actuating part flange (145) corresponding to the clamp part slot (151), engages with the rib (115a), and restricts the movement of the actuating part (140) along the first axis. The parking structure according to claim 8, characterized in that.

13. The brake part (120) is arranged in the receiving cavity (114) of the housing, is rotatable around a second axis (194) between the locking position and the release position, and is at least partially fan-shaped. The brake part (120) includes a rising part (123), a concave part (124), a pressing part (125), and a second end connecting part (126) of the traction member. The rising part (123) rises on one side along the second axis (194) with a fan-shaped disk surface. The concave part (124) is adjacent to the rising part (123) in the circumferential direction and recesses toward the side opposite to the rising part (123). The pressing part (125) is located outside one end of the fan shape and abuts against the actuating part (140). The end connection part (126) of the second traction member is arranged near the pressing part (125) and connected to the second end (252) of the traction member (250). The first end (251) of the traction member (250) is connected to the drive structure (200). The brake part (120) is pulled by the traction member (250) and is movable between the lock position and the release position. The lock structure (100) further includes a lock pin (130). The lock pin (130) is movable within the housing (110) along the second shaft (194). When the brake part (120) is in the lock position, the lock pin (130) abuts against the rising part (123), protrudes from the housing (110), and is inserted into the corresponding slot (320) of the wheel (300), thereby locking the wheel (300). When the brake part (120) is in the release position, the lock pin (130) abuts against the recess (124), retracts into the housing (110), and releases the wheel (300). The parking structure according to claim 4, characterized in that.

14. The brake part (120) further includes a first indicating part (121) and a second indicating part (122) respectively located on the fan-shaped outer peripheral surface of the brake part (120). The housing (110) has a transparent or hollow indicator window (113) that opens on the outer periphery corresponding to the first indicating part (121) and the second indicating part (122) of the brake part (120) so as to display either the first indicating part (121) or the second indicating part (122). When the brake part (120) is in the release position, the first indicating part (121) is located in the indicator window (113). When the brake part (120) is in the lock position, the second indicating part (122) is located in the indicator window (113). The parking structure according to claim 4, characterized in that.

15. The second shaft (194) is substantially perpendicular to the first shaft (193) and coincides with the rotation axis of the wheel (300). The parking structure according to claim 13, characterized in that.

16. The drive structure includes a traction member (250). The traction member (250) includes a first end (251) of the traction member, a second end (252) of the traction member, and a traction member engaging portion (253). The first end (251) of the traction member is connected to the drive structure (200). The second end (252) of the traction member is connected to the brake portion (120). The traction member engaging portion (253) can be engaged with the clamp portion (150). When the clamp portion (150) is in the block position, the clamp portion (150) pulls the traction member (250) through the traction member engaging portion (253) to prevent the brake portion (120) from retreating from the lock position corresponding to the block position to the release position. The parking structure according to claim 4, characterized in that.

17. The parking structure further includes a clamp portion elastic member (191) and a lock pin elastic member (192). The clamp portion elastic member (191) is disposed between the clamp portion (150) and the housing (110) or the wheel seat (160) connected to the housing (110), and biases the clamp portion (150) to the first axial position. The lock pin elastic member (192) is disposed between the lock pin (130) and the housing (110), and biases the lock pin (130) to retreat into the housing (110). The parking structure according to claim 4, characterized in that.

18. The drive structure (200) includes a sleeve (240), a pedal (210), and a slider (230). The sleeve (240) is disposed laterally on a cross beam (410) of the frame (400) connected to the wheel (300). The pedal (210) is sleeved outside the sleeve (240) and stepped on to rotate around the sleeve (240). A pedal passage (211) is provided on the inner wall of the pedal (210), and the pedal passage (211) includes an inclined portion (211a) extending perpendicular to the lateral direction. The slider (230) is disposed slidably in the lateral direction on the sleeve (240). A slide pin (231) is inserted into the slider (230), and one end of the slide pin (231) is inserted into the pedal passage (211) and provided to be movable relatively within the pedal passage (211). When the pedal (210) is depressed, due to the interaction between the slide pin (231) and the pedal passage (211), the slider (230) pulls the traction member (250) of the drive structure towards the center of the sleeve (240). The parking structure according to claim 3, characterized in that.

19. The drive structure (200) further includes a contact member (220) and a contact member passage (221). The contact member (220) and the pedal (210) are each formed as a semi-cylindrical shape so as to be sleeved outside the sleeve (240) and contact each other to form a tubular structure. The contact member passage (221) is disposed inside the contact member (220), extends obliquely in a direction opposite to the pedal passage (211), and the other end of the slide pin (231) is inserted into the contact member passage (221) and is movable relative to the contact member passage (221). The parking structure according to claim 18, characterized in that.

20. A frame (400); At least one wheel (300) connected below the frame (400); Including the parking structure according to any one of claims 1 to 19 A baby stroller for children, characterized in that.

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