Intermittent movement device, wheel lock structure and stroller

Abstract

Providing an intermittent movement device, a wheel locking structure, and a stroller. [Solution] The intermittent movement device of the present invention includes a housing, a drive member, a plurality of engaging teeth, and an operating member, wherein the drive member is disposed within the housing and rotatable about a first axis, the plurality of engaging teeth are distributed circumferentially on the drive member based on the first axis, and the operating member can reciprocate between an initial position and an operating position relative to the drive member about the first axis, and when the operating member moves from the operating position to the initial position, the operating member returns from the operating position to the initial position by passing over one of the engaging teeth, and the drive member does not rotate with the operating member. The present invention further discloses a wheel lock structure and a stroller.

Description

Technical Field

[0001] This application is an international application of PCT / EP2023 / 056210 filed on March 10, 2023, entitled "Intermittent Movement Device, Wheel Lock Structure and Baby Stroller", claiming the rights of Chinese application No. 202210233697.1 filed on March 10, 2022 and No. 202210508863.4 filed on May 10, 2022. All the contents of these two applications are incorporated herein by reference. This application relates to an intermittent movement device, a wheel lock structure having the intermittent movement device, and a baby stroller.

Background Art

[0002] According to the prior art, the wheel lock mechanism of a baby stroller includes a wheel, an axle rotatably connected to the wheel, and a plurality of lock grooves annularly distributed on each wheel. The parking pedal connected to the baby stroller frame is provided on one side of each wheel. When the pedal is depressed, the parking block connected to the pedal is inserted into one of the lock grooves, and the wheel cannot rotate. When unlocking is required, the user has to hook the parking pedal with the instep and separate the parking block from the lock groove. This lock mechanism requires two up-and-down movements during operation, which is inconvenient to perform with the feet, easily damages or dirties the shoes, and especially when wearing shoes with the instep exposed, the user may expose the exposed instep.

[0003] Therefore, there is a need to propose a new wheel lock structure that can reliably lock and unlock the wheel by stepping on the pedal in one direction.

Summary of the Invention

Problems to be Solved by the Invention

[0004] Some strollers come equipped with storage crates to make it easier for babysitters to carry shopping bags and other necessities when going out. However, due to limitations such as connection methods and spatial compatibility with the stroller frame, existing storage crates on strollers are often inconvenient to use and provide a poor user experience. [Means for solving the problem]

[0005] The intermittent movement device of the present invention includes a housing, a drive member, a plurality of engaging teeth, and an operating member, wherein the drive member is rotatable about a first axis, the plurality of engaging teeth are distributed circumferentially on the drive member based on the first axis, and the operating member can reciprocate between an initial position and an operating position relative to the housing about the first axis, and when the operating member moves from the operating position to the initial position, the operating member returns from the operating position to the initial position by passing one of the engaging teeth, and the drive member does not rotate together with the operating member.

[0006] In one embodiment, the plurality of engaging teeth can each rotate between an engaging position and a avoidance position relative to the drive member, and when the operating member moves from the initial position to the operating position, the operating member pushes one engaging tooth into the engaging position, causing the drive member to rotate along the rotational direction via the engaging tooth, and when the operating member moves from the operation position to the initial position, the operating member returns from the operation position to the initial position over the next engaging tooth after the first engaging tooth in the rotational direction, so that the drive member does not rotate with the operating member.

[0007] In one embodiment, each of the engaging teeth can rotate with respect to the drive member about a second axis between the engaging position and the avoidance position, the second axis being parallel to the first axis, or each of the engaging teeth can move linearly between the engaging position and the avoidance position along a direction perpendicular to the first axis.

[0008] In one embodiment, each of the engaging teeth includes a front surface and a rear surface, the front surface and the rear surface forming an angle with respect to each other, the operating member includes a pressing portion that applies a pressing action to one of the engaging teeth, when the operating member moves from the initial position to the operating position, the pressing portion of the operating member presses the front surface of one of the engaging teeth so that one of the engaging teeth is in the engaging position, and when the operating member moves from the operating position to the initial position, the pressing portion moves past the next engaging tooth and presses the rear surface of the next engaging tooth to move the next engaging tooth to an avoidance position.

[0009] In one embodiment, the intermittent movement device further includes a plurality of engaging tooth elastic members, which are positioned between the plurality of engaging teeth and the drive member, biasing the engaging teeth to the engagement position, and in the engagement position, the engaging teeth protrude radially with respect to the first axis more than in the avoidance position.

[0010] In one embodiment, the engaging tooth elastic member is a compression spring, and each engaging tooth includes an engaging tooth elastic member housing portion that houses at least one end of each engaging tooth elastic member.

[0011] In one embodiment, the drive member includes a plurality of engagement tooth grooves, which are concavely formed from one side surface of the drive member, distributed circumferentially based on the first axis, and each of the plurality of engagement teeth is housed in each of the engagement tooth grooves, which include an engagement limiting portion, an avoidance limiting portion, and an engagement tooth elastic member contact portion, wherein the engagement limiting portion prevents the corresponding engagement tooth from rotating beyond the engagement position relative to the drive member when the corresponding engagement tooth is in its engagement position, the avoidance limiting portion prevents the corresponding engagement tooth from rotating beyond the avoidance position relative to the drive member when the corresponding engagement tooth is in its avoidance position, and the engagement tooth elastic member contact portion is positioned adjacent to the avoidance limiting portion so that the other end of the engagement tooth elastic member contacts it.

[0012] In one embodiment, the engagement limiting portion, the avoidance limiting portion, and the engagement tooth elastic member contact portion are all axially extending walls of the engagement tooth groove, the engagement limiting portion faces both the avoidance limiting portion and the engagement tooth elastic member contact portion in the radial direction, the engagement limiting portion is the radial outer wall of the engagement tooth groove, and the avoidance limiting portion and the engagement tooth elastic member contact portion are each the radial inner walls of the engagement tooth groove.

[0013] In one embodiment, the stroke of the operating member with each reciprocating motion is greater than or equal to the distance between two adjacent engaging teeth.

[0014] In one embodiment, the operating member further includes an operating member body, the operating member body being arranged coaxially with the drive member along the first axis, the plurality of engaging teeth being arranged on the side of the drive member facing the operating member body, and the push portion being located on the side of the operating member body facing the drive member, and when the operating member moves from the initial position to the operating position, the push portion protrudes axially and contacts one of the engaging teeth.

[0015] In one embodiment, the housing includes a disk surface facing the operating member body, the disk surface having a circumferentially extending insertion slot, the operating member further includes an axially extending insertion post inside the housing, and when the operating member reciprocates relative to the housing, the insertion post inserts into the insertion slot and slides along the insertion slot, the insertion slot limits the stroke of movement of the operating member between the operating position and the initial position, the intermittent movement device further includes an operating elastic member, the operating elastic member positioned in the insertion slot and in contact with the end wall of the insertion slot and the insertion post, biasing the operating member to the initial position.

[0016] The wheel lock structure of the present application includes the intermittent movement device, a wheel, and a pin, wherein the wheel is rotatably connected to the housing about a first axis, the wheel has a parking hole on the side facing the housing, the operating member and the wheel are located on opposite sides of the drive member, the pin is located in the housing and between the drive member and the wheel, and can move axially between a parked position and a non-parked position, in the parked position the pin is inserted into the parking hole to prevent the wheel from rotating, and in the non-parked position the pin is disengaged from the parking hole to allow the wheel to rotate, the drive member of the intermittent movement device is rotatably connected to the housing and abuts against one end of the pin, the drive member has a parking portion protruding from the wheel and a non-parked portion recessed away from the wheel on the side abutting against the pin, and when the drive member rotates, one of the parking portions or one of the non-parked portions abuts against the pin, causing the pin to move to the parked position or the non-parked position.

[0017] In one embodiment, the pin comprises a first indicator portion and a second indicator portion, the first and second indicator portions being arranged axially and having different visual effects, an indicator window being provided in the peripheral wall of the housing, the first indicator portion being exposed to the outside corresponding to the position of the indicator window when the pin is in the non-parking position, and the second indicator portion being exposed to the outside corresponding to the position of the indicator window when the pin is in the parking position.

[0018] In one embodiment, a pin elastic member is positioned between the pin and the housing, and the pin elastic member biases the pin to the non-parked position.

[0019] In one embodiment, the parking area and the non-parking area are alternately distributed around the first axis.

[0020] In one embodiment, the wheel lock structure further includes another wheel, another pin, another drive member, and a cable, wherein the other wheel is paired with the first wheel and rotatably connected to the other housing about the first axis, the other wheel has a parking hole on the side facing the other housing, the other pin is provided in the other housing and can move axially between a parking position and an unparked position, in the parking position of the other pin the other pin is inserted into the parking hole of the other wheel to prevent rotation of the other wheel, and in the unparked position of the other pin the other pin is disengaged from the parking hole of the other wheel to allow rotation of the other wheel, the other drive member is rotatably connected to the other housing and one end of the other pin The other drive member is connected in contact with the other, and the other drive member comprises a parking portion that protrudes from the other wheel and a non-parking portion that is recessed away from the other wheel on the side that contacts the other pin, and when the other drive member rotates, the parking portion or the non-parking portion contacts the other pin, causing the other pin to move to the other parking position or the other non-parking position, and the cable has one end connected to a second cable end connection provided on the outer circumference of the other drive member, and the other end is connected to the drive member via a link mechanism, and when one of the parking portions of the drive member contacts the pin and enters the parking position, the drive member moves the other drive member via the link mechanism and the cable, thereby causing the other drive member to rotate to the other parking portion and contact the other pin and enter the parking position.

[0021] In one embodiment, the link mechanism includes a link slider and a link seat, wherein the link slider is located in the housing and can slide relative to the wheel in a direction perpendicular to the first axis, the other end of the cable is connected to a first end connector of the cable of the link slider, the link seat is located in the housing and can slide relative to the wheel in a direction parallel to the first axis, the link seat and the link slider engage at an inclined surface, and the link mechanism is configured such that when one parking portion contacts the pin, the other parking portion contacts the link seat, the link seat slides in a direction parallel to the first axis, the link seat slides the link slider perpendicular to the first axis by inclined surface engagement, and the link slider rotates the other drive member via the cable.

[0022] The stroller of the present invention includes a stroller frame, a stroller seat that stands on the stroller frame, a front wheel and a rear wheel positioned below the stroller frame, and the wheel lock structure described above, wherein the wheel is either the front wheel or the rear wheel.

[0023] This invention aims to provide a stroller with a storage crate that is easy to use and offers a good user experience.

[0024] One aspect of the present invention provides a stroller comprising a stroller frame, a storage crate, and a locking mechanism, the storage crate being detachably positioned on the stroller frame and comprising a storage basket and a handlebar, the handlebar being rotatably connected to the storage basket, the handlebar being able to rotate to a first rotational position to lock the locking mechanism so that the storage crate and the stroller frame are locked relative to each other, and the handlebar being able to rotate to a second rotational position to unlock the locking mechanism so that the storage crate and the stroller frame are unlocked relative to each other.

[0025] In such a baby stroller, a locking mechanism disposed between the baby stroller frame and the storage crate enables locking and unlocking between the storage crate and the baby stroller frame by simply rotating the handlebar with one hand, which is convenient for operation. For example, the position where the handlebar is horizontally disposed can be set as the first rotation position, and the position where the handlebar is vertically disposed can be set as the second rotation position. When it is necessary to separate the storage crate from the baby stroller frame, simply rotating the handlebar from the horizontal position to the vertical position with one hand unlocks the storage crate from the baby stroller frame, and the storage crate can be lifted from the baby stroller frame. Also, in order to achieve unlocking between the storage crate and the baby stroller frame, there is no need to arrange an additional operating member between the baby stroller frame and the storage crate, and the structure is simple and cost can be saved.

[0026] In one embodiment, the locking mechanism includes an operating member, a first locking portion, and a second locking portion. The operating member is fixed to the handlebar. The first locking portion is provided on the storage crate. The second locking portion is provided on the baby stroller frame. When the handlebar rotates to rotate the operating member, the operating member drives the first locking portion and the second locking portion to lock with each other or unlock from each other.

[0027] In one embodiment, the operating member includes an inclined push rib. The first locking portion is an engaging block. The second locking portion is an engaging hole. When the handlebar rotates to the second rotation position, the handlebar rotates the operating member, and thereby the push rib drives the engaging block to disengage from the engaging hole.

[0028] In one embodiment, the locking mechanism further includes a push block fixedly connected to the engaging block, and the push block can abut against the push rib.

[0029] In one embodiment, the locking mechanism further includes a first reset member that always biases the engagement block to move in a direction in which the engagement block engages with the engagement hole.

[0030] In one embodiment, the locking mechanism further includes a fixed sheet provided on the baby carrier frame and a connection sheet provided on the storage basket. The engagement hole is provided on the fixed sheet, and the engagement block is movably provided on the connection sheet.

[0031] In one embodiment, the fixed sheet includes a cooperation bulge, and the connection sheet includes a cooperation slot that matches the cooperation bulge.

[0032] In one embodiment, the locking mechanism further includes a first reset member and a connection cover. The first reset member is located between the connection cover and the connection sheet. The connection sheet has an accommodation hole. Both ends of the first reset member respectively abut against the connection cover and the engagement block, and the engagement block is movably provided in the accommodation hole.

[0033] In one embodiment, the locking mechanism further includes a positioning member. The positioning member is fixedly connected to the connection sheet, and the actuating member is rotatably connected to the positioning member. The actuating member can be fixed at a plurality of positions relative to the positioning member.

[0034] In one embodiment, the positioning member includes at least one connection hole, and the connection sheet includes at least one connection arm that can cooperate with the connection hole to be fixed.

[0035] In one embodiment, the positioning member comprises at least one first positioning portion, and the operating member comprises a plurality of second positioning portions in the circumferential direction, wherein the plurality of second positioning portions can cooperate with the first positioning portion along the circumferential direction, or the operating member comprises at least one first positioning portion, and the positioning member comprises a plurality of second positioning portions that can cooperate with the first positioning portion along the circumferential direction.

[0036] In one embodiment, the positioning member comprises at least one elastic arm, the elastic arm comprises at least one positioning projection, and the operating member comprises a plurality of positioning recesses in the circumferential direction that can cooperate with the at least one positioning projection.

[0037] In one embodiment, the stroller frame includes a handrail support bar, and the fixed seat is slidably mounted on the handrail support bar.

[0038] In one embodiment, the storage basket includes a connecting frame and a cover fabric that is sleeved over the connecting frame.

[0039] In one embodiment, the connecting frame includes a first connecting tube and a second connecting tube, two locking mechanisms are located on the left and right sides of the stroller frame, respectively, and the connecting pins are positioned on both sides of the connecting sheet of each locking mechanism and are inserted into and connected to one end of the first connecting tube and one end of the second connecting tube.

[0040] Another embodiment provides a stroller comprising a stroller frame including a front leg support bar, and a storage crate provided on the front leg support bar.

[0041] In this stroller, the storage crate is mounted on the front leg support bar of the stroller frame, which is convenient for the stroller's spatial structure design. In particular, for strollers with two seats, mounting the storage crate on the front leg support bar avoids interference between the lower seat of the stroller and the storage crate, achieving a harmonious coexistence of the storage crate and the lower seat.

[0042] In one embodiment, the storage crate includes a connecting frame and a cover fabric that is sleeved to the connecting frame, the connecting frame being provided on the front leg support rod.

[0043] In one embodiment, the connecting frame is rotatably connected to the front leg support rod.

[0044] In one embodiment, the stroller further includes a first engagement seat and a second engagement seat, the first engagement seat being provided on the front foot support rod and the second engagement seat being provided on the connecting frame.

[0045] In one embodiment, one end of the first engagement sheet is rotatably connected to the second engagement sheet, and the other end of the first engagement sheet is rotatably connected to the front leg support rod.

[0046] In one embodiment, the first engaging seat includes a turntable pivotally attached to the front foot support rod, the turntable having a plurality of first cooperating parts circumferentially, and the stroller further includes a second cooperating part movably mounted on the front foot support rod, the second cooperating part being able to cooperate with any of the first cooperating parts.

[0047] In one embodiment, the first cooperating part is a cooperating slot provided on the turntable, and the second cooperating part is a cooperating pin movably provided on the front foot support rod.

[0048] In one embodiment, the stroller further includes a second resetting member, which constantly biases the cooperating pin to move toward the cooperating slot.

[0049] In one embodiment, the first engaging sheet and the second engaging sheet are detachably connected.

[0050] In one embodiment, the stroller frame further includes a first sitting assembly, a second sitting assembly, two handrail support bars, and two rear leg support bars, wherein the first sitting assembly is provided between the two handrail support bars, and the second sitting assembly is provided between the two rear leg support bars. [Brief explanation of the drawing]

[0051] [Figure 1] This is a perspective view showing the wheel lock structure according to the present invention, where the operating member is not pressed down and the wheel is in the unlocked state. [Figure 2] This is a perspective view showing a wheel locking mechanism where the operating member is pressed down and the wheel is locked. [Figure 3] This is a perspective view of a wheel lock structure with the operating member removed to clearly show the internal mechanism, including the drive member and engaging teeth. [Figure 4] This is a partial enlargement view of the block in Figure 3. [Figure 5] This is a perspective view of a wheel locking mechanism, with one wheel removed to clearly show the housing, operating member, and pin, and a portion of the housing of the other wheel removed to clearly show the drive member of the other wheel. [Figure 6A] Figure 5 shows enlarged sections of the left and right blocks. [Figure 6B] Figure 5 shows enlarged sections of the left and right blocks. [Figure 7] This is an exploded perspective view of the stroller frame, wheels, and some of its components. [Figure 8] This is a partial enlargement view of the block in Figure 7. [Figure 9] This is a partial exploded perspective view of the stroller frame, wheels, and components. [Figure 10] This is a partial enlargement view of the block in Figure 9. [Figure 11A] These are perspective views of the drive member from different angles. [Figure 11B] These are perspective views of the drive member from different angles. [Figure 11C] These are perspective views of the drive member from different angles. [Figure 12A] These are perspective views of the engaging teeth from different angles. [Figure 12B] These are perspective views of the engaging teeth from different angles. [Figure 13A] These are perspective views of the operating components from different angles. [Figure 13B] These are perspective views of the operating components from different angles. [Figure 14A] These are perspective views of the pins and pin elastic members assembled together from different angles. [Figure 14B] These are perspective views of the pins and pin elastic members assembled together from different angles. [Figure 15] This is a cross-sectional view showing the interaction process between the operating member, the driving member, and the engaging teeth. [Figure 16] This is a cross-sectional view showing the interaction process between the operating member, the driving member, and the engaging teeth. [Figure 17] This is a cross-sectional view showing the interaction process between the operating member, the driving member, and the engaging teeth. [Figure 18] This is a cross-sectional view showing the contact relationship between the drive member and the pin. [Figure 19] This is a magnified view of a section of the block shown in Figure 18. [Figure 20] These are perspective views of the wheel lock structure from different angles, with the cables schematically indicated by dotted lines. [Figure 21] These are perspective views of the wheel lock structure from different angles, with the cables schematically indicated by dotted lines. [Figure 22] This is a perspective view of a wheel lock structure, with the cables schematically shown by dotted lines, and a portion of the other housing removed to show the other drive member. [Figure 23] This is a perspective view showing the other wheel, the other housing, and the other drive member. [Figure 24A] These are two perspective views showing the other drive member and the other pin from different angles. [Figure 24B] These are two perspective views showing the other drive member and the other pin from different angles. [Figure 25] This is a perspective view showing a portion of the drive member, pin, link slider, link seat, and housing. [Figure 26A] This is a schematic diagram showing the operation of the linkage mechanism. In Figure 26A, the pin and the other pins are in their respective non-parking positions, while in Figure 26B, the pin and the other pins are in their respective parking positions. [Figure 26B] This is a schematic diagram showing the operation of the linkage mechanism. In Figure 26A, the pin and the other pins are in their respective non-parking positions, while in Figure 26B, the pin and the other pins are in their respective parking positions. [Figure 27] This is a cross-sectional view of a wheel with an operating member, and a partial cross-sectional view after a wheel without an operating member has been removed. [Figure 28] This is a partial enlargement view of the block in Figure 27. [Figure 29] This diagram shows a link slider and a link sheet, with the link slider in a proximal position. [Figure 30] This is a partial enlargement view of the block in Figure 29. [Figure 31] This diagram shows a link slider and link sheet, with the link slider located distally. [Figure 32] This is a partial enlargement view of the block in Figure 31. [Figure 33] This is a schematic diagram of a partial structure of a stroller according to an embodiment of the present disclosure, in which the handlebars are in a first rotational position. [Figure 34]This is a schematic diagram of a partial structure of a stroller according to an embodiment of the present disclosure, in which the handlebars are in a second rotational position. [Figure 35] This is a schematic diagram of a part of the structure shown in Figure 34. [Figure 36] This is a schematic diagram of the structure of the other part of Figure 34. [Figure 37] Figure 36 is an exploded perspective view. [Figure 38] This is an enlarged view of the operating member shown in Figure 37. [Figure 39] Figure 37 is an enlarged view of the pressing block and engaging block. [Figure 40] Figure 37 is an enlarged view of the positioning member. [Figure 41] This is a partial cross-sectional view of Figure 33. [Figure 42] This is an enlarged view of "A" in Figure 41. [Figure 43] This is a partial cross-sectional view of Figure 34. [Figure 44] This is an enlarged view of "B" in Figure 43. [Figure 45] This is a partial view of Figure 33. [Figure 46] This is an enlarged view of "C" in Figure 45. [Figure 47] This is a partial exploded view of Figure 34. [Figure 48] This is an enlarged view of "D" in Figure 45. [Figure 49] This is an enlarged view of the connecting sheet in Figure 37, seen from the other angle. [Figure 50] This is a schematic diagram of the structure of a stroller according to another embodiment of the present disclosure, where the second sitting assembly is a child seat and the storage crate is in a fully open position. [Figure 51] Figure 51 is a schematic diagram of the structure of a stroller according to another embodiment of the present disclosure, in which the second seat assembly is a child seat and the storage crate is in a fully folded state. [Figure 52] This is a schematic diagram of the structure of a stroller according to another embodiment of the present disclosure, where the second seat assembly is a child seat and the storage crate is removed. [Figure 53] This is a side view of Figure 50. [Figure 54] This is a side view of Figure 51. [Figure 55] This is a side view of Figure 52. [Figure 56] This is a schematic diagram of the structure of a stroller according to yet another embodiment of the present disclosure, in which the second sitting assembly is a sleep box and the storage crate is in a fully open position. [Figure 57] This is a schematic diagram of the structure of a stroller according to yet another embodiment of the present disclosure, where the second sitting assembly is a sleep box and the storage crate is removed. [Figure 58] This is a magnified view of a portion of Figure 52. [Figure 59] This is an enlarged view of "E" in Figure 58, where the first engagement sheet is in a state where the connecting pin is almost vertical. [Figure 60] Figure 59 is a schematic diagram of the structure shown, in which the first engaging sheet has its connecting pins inclined downwards. [Figure 61] This is a schematic diagram of the structure of the first engagement seat in a stroller according to a further embodiment. [Figure 62] Figure 61 is a schematic diagram of the structure of the first engagement sheet, in a state where the connecting pins are substantially vertical. [Figure 63] Figure 61 is a schematic diagram of the structure of the first engagement sheet in a state where the connecting pin is inclined downwards. [Modes for carrying out the invention]

[0052] While this specification illustrates and describes the present application with reference to specific embodiments, the application should not be limited to these illustrated details. Indeed, many modifications can be made to these details within the scope of the equivalents of the claims without departing from the present application.

[0053] Directional descriptions used herein, such as "front," "back," "up," and "down," are for the sake of convenience of understanding only. The application is by no means limited to these directions and can be adapted to the actual situation. Although the application is described with reference to typical embodiments, the terminology used is illustrative and not restrictive.

[0054] Note that when an element is said to be "attached" to another element, that element may be directly connected to the other element, or there may be an intermediary element between them. When an element is said to be "connected" to another element, it may be directly connected to the other element, or there may be an intermediary element between them. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not imply only one implementation.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the field of this disclosure. Terms used in the descriptions of this disclosure herein are for the purpose of describing specific embodiments and are not intended to limit the disclosure. Furthermore, the expression “and / or” as used herein includes any combination of one or more related items.

[0056] Next, the stroller frame 1300 of the stroller according to the present invention will be described in general terms with reference to Figures 1 and 2. Only the stroller frame 1300 and the two wheels installed below the stroller frame 1300 are shown. Other parts of the stroller, such as the stroller seat and armrests, are well known, so their illustration and description are omitted. The wheels of the present invention can be arranged as two parallel front wheels or two parallel rear wheels, preferably rear wheels, to facilitate user operation. For distinction, the two wheels can be referred to as wheel 1120 and the other wheel 1220, and they can correspond to the left wheel and right wheel, respectively, or they can be interchanged.

[0057] In the wheel lock structure according to the present invention, an operating member 1160 is positioned on the wheel 1120. The unpressed state of the operating member 1160 is shown in Figure 1, and the pressed state of the operating member 1160 is shown in Figure 2. When the user presses (for example, steps on) the operating member 1160 and releases it, it automatically returns to the unpressed state, that is, one reciprocating motion of the operating member 1160 is completed. Each reciprocating motion of the operating member 1160 switches the wheel lock structure between the parked state and the unparked state. In this way, the user can complete the switch between the parked state and the unparked state without lifting the operating member 1160 upward with the top of their foot.

[0058] The wheel lock structure of the present invention will be further described with reference to Figures 1 and 2, and then to Figures 3 and 4. The wheel lock structure includes a wheel 1120, a pin 1130, and an intermittent motion device. The intermittent motion device includes a housing 1110, an operating member 1160, a driving member 1140, and engaging teeth 1150. The intermittent motion device is installed inside the wheel 1120, and the pin 1130 is installed between the wheel 1120 and the intermittent motion device.

[0059] In this embodiment, the rotation axis of the drive member 1140 and the rotation axis of the wheel 1120 are the same as the first axis 1141, which simplifies the manufacturing process. However, this is not necessary, and conversely, the rotation axis of the drive member 1140 can be offset from the first axis 1141, or for example, from several other axes parallel to the first axis 1141.

[0060] The pin 1130 is provided with a first indicator 1134 and a second indicator 1135, which are arranged along an axis having different visual effects (clearly shown in Figures 14A and 14B). An indicator window 1111 is provided on the peripheral wall of the housing 1110. When the pin 1130 is in a non-parking position, the first indicator 1134 is exposed to the outside in accordance with the position of the indicator window 1111, and when the pin 1130 is in a parking position, the second indicator 1135 is exposed to the inside in accordance with the state of the indicator window 1111. For example, the first indicator 1134 may be green and the second indicator 1135 may be red.

[0061] Referring to Figures 5 to 6B, the wheel lock structure is shown from the other angle. Figure 6A shows the other housing 1210 and the other drive member 1240, along with the link mechanism, which will be described later. Figure 6B shows one side of the housing 1110 facing the wheel 1120, with the wheel 1120 removed, clearly showing the housing 1110, the operating member 1160, and the pin 1130. The pin 1130 is joined to the wheel 1120 by passing through the pin hole 1113 in the housing 1110, and it can be seen that it moves axially within the pin hole 1113 without rotating together with the operating member 1160 or the drive member 1140 (because the housing 1110 does not rotate).

[0062] The housing 1110 is substantially cylindrical with one end open and includes a disk surface facing the operating member body 1161, with one or more circumferentially extending insertion slots 1112 formed on the disk surface. The operating member 1160 includes one or more insertion posts 1164, each of which extends axially into the housing 1110. The insertion posts 1164 are inserted into the insertion slots 1112 and slide along the insertion slots 1112 as the operating member 1160 reciprocates relative to the housing 1110. The insertion slots 1112 limit the movement stroke of the operating member 1160 between the operating position and the initial position. The intermittent motion device further includes one or more operating elastic members 1192. The operating elastic member 1192 is provided in the corresponding insertion slot 1112 and contacts the end wall of the insertion slot 1112 and the corresponding insertion post 1164, biasing the operating member 1160 to its initial position (i.e., the non-pressed position shown in Figure 1).

[0063] In this embodiment, the housing 1110 is provided with three insertion slots 1112, and the operating member 1160 is provided with three corresponding insertion posts 1164. The three insertion posts 1164 are each inserted into the three insertion slots 1112, and the three operating elastic members 1192 abut between the three insertion slots 1112 and the three insertion posts 1164. Such an arrangement can provide more uniform elasticity to the operating member 1160. However, the application is not limited to this, and in other embodiments, more or fewer insertion slots 1112, insertion posts 1164, and operating elastic members 1192 can be arranged as long as the stroke of the operating member 1160 can be accommodated. Also, the number of operating elastic members 1192 does not necessarily correspond to the number of insertion slots 1112; that is, it is not necessary to provide an operating elastic member 1190 for each insertion slot 1112.

[0064] Referring to Figures 7 to 10, the assembly relationship of the wheel lock structure according to this invention will be described below.

[0065] The wheel 1120 is rotatably connected to the housing 1110 around a first axle 1141, and the wheel 1120 has a parking hole 1121 and a wheel axle 1122 on the side facing the housing 1110. More specifically, the wheel axle 1122 is rotatably inserted into a wheel axle hole 1114 of the housing 1110. The operating member 1160 and the wheel 1120 are located on two axial sides of the drive member 1140. A pin 1130 is located in a pin hole 1113 of the housing 1110 and can move axially between a parked position and an unparked position between the drive member 1140 and the wheel 1120. In the parked position, the pin 1130 is inserted into the parking hole 1121 to prevent the wheel 1120 from rotating, and in the unparked position, the pin 1130 is removed from the parking hole 1121 to allow the wheel 1120 to rotate. The drive member 1140 of the intermittent motion device is rotatably connected to the housing 1110 and is always in contact with one end of the pin 1130. The drive member 1140 is provided with a parking portion 1145 that protrudes toward the wheel 1120, a non-parking portion 1146 that is recessed away from the wheel 1120, and a drive slope 1147 located between the parking portion 1144 and the non-parking portion 1141, which are located on the side that contacts the pin 1130 (Figures 11A and 11B). When the drive member 1140 rotates, the parking portion 1145 or the non-parking portion 1146 contacts the pin 1130, causing the pin 1130 to move to the parking position or the non-parking position.

[0066] The drive member 1140 is located within the housing 1110 and is rotatable around the first shaft 1141. Multiple engaging teeth 1150 are uniformly distributed along the circumference based on the first shaft 1141 and are rotatably connected to the drive member 1140 (see Figures 4 and 10). As shown in Figure 11A, the drive member 1140 has a corresponding number of engaging tooth shafts 1144 on the side closest to the engaging teeth 1150. The engaging teeth 1150 are sleeved on the corresponding engaging tooth shafts 1144 and can rotate between an engaged position (pressed position) and an avoidance position (unpressed position) relative to the drive member 1140. The operating member 1160 can reciprocate between an initial position (unpressed position) and an operating position (pressed position) around the first shaft 1141 relative to the housing 1110.

[0067] Figures 8 to 10 also show the locations of several engaging tooth elastic members 1193. Although only two engaging tooth elastic members 1193 are shown, each engaging tooth 1150 is provided with its own engaging tooth elastic member 1193.

[0068] Figure 10 also shows the link slider 1170 and the link sheet 1180, and the link device including the link slider 1170 and the link sheet 118a will be described later.

[0069] The structure of the drive member 1140 will be described in detail below with reference to Figures 11A and 11B. The drive member 1140 is substantially disc-shaped and includes a drive member shaft hole 1142, an engagement tooth groove 1143, and an engagement tooth shaft 1144 on the side facing the operating member 1160, and a parking portion 1145 and a non-parking portion 1146 on the side facing the wheel 1120.

[0070] The drive member shaft hole 1142 is located on the first shaft 1141 and is positioned in the housing 1110 so that the drive member 1140 can rotate around the first shaft 1141.

[0071] The engagement tooth grooves 1143 are concavely formed from one side of the drive member 1140 and are uniformly distributed circumferentially based on the first axis 1141 to accommodate a plurality of engagement teeth 1150. Each engagement tooth groove 1143 includes an engagement limiting portion 1143a, an avoidance limiting portion 1143b, and an engagement tooth elastic member contact portion 1143c. When an engagement tooth 1150 is in its engagement position, the engagement limiting portion 1143a prevents the engagement tooth 1150 from rotating further beyond the engagement position relative to the drive member 1140. When an engagement tooth 1150 is in its avoidance position, the avoidance limiting portion 1143b prevents the engagement tooth 1150 from rotating further beyond the avoidance position relative to the drive member 1140. The engagement tooth elastic member contact portion 1143c is positioned adjacent to the avoidance limiting portion 1143b so as to contact one end of the engagement tooth elastic member 1193.

[0072] In this embodiment, six engagement tooth grooves 1143 are provided. However, in other embodiments, more or fewer engagement tooth grooves 1143 can be provided depending on the number of engagement teeth 1150.

[0073] In this embodiment, the engagement limiting portion 1143a, the avoidance limiting portion 1143b, and the engagement tooth elastic member contact portion 1143c are all axially extending walls of the engagement tooth groove 1143, and the engagement limiting portion 1141a is radially opposite to the avoidance limiting portion 1141b and the engagement tooth elastic member contact portion 1143c. Here, the engagement limiting portion 1143a is the radial outer wall of the engagement tooth groove 1143, and the avoidance limiting portion 1143b and the engagement tooth elastic member contact portion 1143c are each the radial inner walls of the engagement tooth groove 1143.

[0074] More specifically, the engagement limiting portion 1143a is close to the outer circumference of the drive member 1140, and the outer surface of the engagement limiting portion 1141a is flush with the outer circumference of the drive member 1140. The gap between the two adjacent engagement limiting portions 1143a allows one engagement tooth 1150 to protrude radially outward from the outer circumference of the drive member 1140. The avoidance limiting portion 1143b is close to the drive member shaft hole 1142, and the engagement tooth shaft 1144 is located between the engagement limiting portion 1143a and the avoidance limiting portion 1141b. In one embodiment, the engagement limiting portion 1143a and the avoidance limiting portion 1143b are formed in an arc shape opposite to each other, and the engagement tooth shaft 1144 is located at the center of curvature of the engagement limiting portion 1141a and the avoidance limiting portion 1143b.

[0075] On the side facing the wheel 1120, the parking portion 1145 of the drive member 1140 protrudes toward the wheel 1120, while the non-parking portion 1146 is recessed away from the wheel 1120. Both the parking portion 1145 and the non-parking portion 1146 are sector-shaped surfaces substantially perpendicular to the first shaft 1141. The circumferential extension angle of the parking portion 1145 is greater than the extension angle of the non-parking portion 1146. One end of the non-parking portion 1146 is connected to the parking portion 1145 via a relatively gentle drive slope 1147, and the other end is connected to the other parking portion 1145 via a relatively steep slope.

[0076] Multiple parking sections 1145 and multiple non-parking sections 1146 are uniformly and alternately distributed around the axis of the drive member 1140. As a result, each time the drive member 1140 rotates at the engagement pitch, the position corresponding to the pin 1130 switches from one of the parking sections 1145 to one of the non-parking sections 1146, or from one of the non-parking sections 1146 to one of the parking sections 1145.

[0077] The specific structure of the engaging teeth 1150 will be described with reference to Figures 12A to 12B.

[0078] The engaging tooth elastic member 1193 may be a compression spring. Each engaging tooth 1150 includes an engaging tooth shaft hole 1153, a front surface 1151, a rear surface 1152, and an engaging tooth elastic member housing 1154. The engaging tooth shaft hole 1153 is located on a second shaft 1155 parallel to the first shaft 1141 and is sleeved on one of the engaging tooth shafts 1144 of the drive member 1140, allowing the engaging tooth 1150 to rotate between an engaged position and a repelling position around the second shaft 1155 corresponding to the drive member 1140. At the free end of the corresponding engaging tooth 1150, the front surface 1151 and the rear surface 1152 both extend axially, forming an angle between them, which in this embodiment is acute. The engaging tooth elastic member housing 1154 is located near the engaging tooth shaft hole 1153. Both ends of each engaging tooth elastic member 1193 (Figure 10) are in contact with the engaging tooth elastic member housing portion 1154 and the engaging tooth elastic member contact portion 1143c, respectively.

[0079] The specific configuration of the operating member 1160 will be described with reference to Figures 13A and 13B.

[0080] The operating member 1160 includes an operating member body 1161, a pedal 1162, a push portion 1163, and an insertion post 1164. The operating member body 1161 is substantially disc-shaped and is arranged coaxially with the drive member 1140 along the first axis 1141. The engaging teeth 1150 are provided on the side of the drive member 1140 facing the operating member body 1161. The push portion 1163 is provided on the side of the operating member body 1161 facing the drive member 1140 and protrudes axially. The push portion 1163 is arranged to contact and press one of the engaging teeth 1150 when the operating member 1160 moves from its initial position to its operating position.

[0081] Referring to Figures 14A and 14B, the specific structure of pin 1130 is described below.

[0082] The pin 1130 includes a pin insertion portion 1131, a pin contact portion 1132, a pin elastic member housing portion 1133, a first indicator portion 1134, and a second indicator portion 1135. The pin 1130 is substantially cylindrical, and the pin insertion portion 1131 and the pin contact portion 1132 are located at opposite ends of the cylindrical pin 1130, that is, the pin insertion portion 1311 is located at one end facing the wheel 1120, and the pin contact portion 1132 is located at the other end facing the drive member 1140. The pin elastic member housing portion 1133 is arranged as a cylindrical hollow internal space and is open to the pin insertion portion 1131. The first indicator portion 1134 and the second indicator portion 1135 extend outward from one side of the cylindrical shape. Here, the first indicator portion 1134 is close to the pin insertion portion 1131, and the second indicator portion 1135 is close to the pin contact portion 1132. As described above, the first indicator portion 1134 and the second indicator portion 1135 can have different visual effects, such as different colors. The pin elastic member 1194 is sleeved in the pin insertion portion 1131 and is at least partially housed in the pin elastic member housing portion 1133. Both ends of the pin elastic member 1194 contact the pin elastic member housing portion 1133 and the housing 1110, respectively, to bias the pin 1130 toward the drive member 1140, i.e., toward the non-parking position.

[0083] Referring to Figures 15 to 17, the operation of the intermittent motion device, including the drive member 1140, the operating member 1160, and the engaging teeth 1150, will be described.

[0084] In Figure 15, the operating member 1160 is in the non-pressed position, i.e., the initial position. At this time, the pedal 1162 of the operating member 1160 is in a nearly horizontal position or at an angle to the horizontal plane, for example, 30°. The push portion 1163 is located on the front surface 1151 of the engaging teeth 1150. For ease of understanding, the same engaging teeth 1150 are shown by arrows in Figures 15 to 17. In this state, the push portion 1163 may be mounted in close contact with the front surface 1151, or it may have a certain distance (idle stroke) from the front surface 1151. At this time, the pin 1130 may correspond to the non-parking portion 1146 of the drive member 1140, or it may correspond to the parking portion 1145 of the drive member 1140.

[0085] When a user wants to switch between parked and unparked states, they can press the operating member 1160 to move it from its initial position to the operating position. When the operating member 1160 moves from its initial position to the operating position, the push portion 1163 of the operating member 1160 presses the front surface 1151 of the engaging tooth 1150 (the engaging tooth 1150 indicated by the arrow in Figure 15) so that the engaging tooth 1150 is held in the engaged position. When the engaging tooth 1150 is in the engaged position, its radial projection relative to the first shaft 1141 is greater than when it is in the avoidance position. The push portion 1163 presses the engaging tooth 1150, and the engaging tooth 1150 further moves the drive member 1140. As a result, the drive member 1140 rotates together with the operating member 1160 due to the engaging tooth 1150, resulting in the state shown in Figure 16.

[0086] In Figure 16, the operating member 1160 has reached the pressed position, i.e., the operating position. At this time, the pedal 1162 is in a downward-inclined position. As the operating member 1160 rotates, the drive member 1140 and each engaging tooth 1150 pass through one engaging tooth pitch. At this point, the user releases the operating member 1160, and the operating member 1160 returns to its initial position (Figure 6B) by the operating elastic member 1192, as shown in Figure 17.

[0087] In Figure 17, when the operating member 1160 moves from the operating position to the initial position, the push portion 1163 presses against the rear surface 1152 of the next engaging tooth 1150, thereby causing the engaging tooth 1150 to be in its avoidance position. Since the engaging tooth 1150 in the avoidance position retracts into the drive member 1140, the drive member 1140 is not driven to rotate by the operating member 1160; that is, while the operating member 1160 moves from the operating position to the initial position, the drive member 1140 does not rotate with the operating member 1160. Therefore, the operating member 1160 returns to the initial position after passing the next engaging tooth 1150. During this process, the drive member 1140 does not rotate with the operating member 1160.

[0088] In this way, during the reciprocating cycle in which the operating member 1160 moves from the initial position to the operating position and then from the operating position back to the initial position, the drive member 1140 rotates at the engagement tooth pitch, thereby achieving intermittent motion of the drive member 1140. This intermittent motion allows the stroller to switch from a non-parked state to a parked state, or from a parked state to a non-parked state.

[0089] Furthermore, if there is an idle stroke between the operating member 1160 and the engaging teeth 1150 in their initial positions, the intermittent motion device can allow the user to perform an incomplete pressing operation. Specifically, if an idle stroke is set, and the operating member 1160 has not fully moved into the pressing process, the driving member 1140 and the corresponding engaging teeth 1150 will not rotate completely, and the pushing portion 1163 of the operating member 1160 can overcome the next engaging teeth 1150 in the reset process. If there is no idle stroke, and the driving member 1140 and the corresponding engaging teeth 1150 have not rotated completely, the pushing portion 1163 cannot overcome the next engaging teeth 1150, and the next reciprocating motion of the operating member 1160 cannot move the driving member 1140.

[0090] When there is no idle stroke, the reciprocating stroke of the operating member 1160 is equal to the distance between two adjacent engaging teeth 1150. On the other hand, when there is an idle stroke, the reciprocating stroke of the operating member 1160 is greater than the distance between two adjacent engaging teeth 1150.

[0091] In this embodiment, the engaging teeth 1150 perform rotational motion relative to the drive member 1140. In other embodiments, the engaging teeth 1150 may also move linearly relative to the drive member 1140, and each engaging tooth 1150 can move linearly between an engaging position and a avoidance position along a direction perpendicular to the first axis 1141. Specifically, the direction of linear motion of the engaging teeth 1150 is perpendicular to the radial direction of the first axis 1141, for example, the drive member 1140.

[0092] Referring to Figures 18 and 19, the interaction between the drive member 1140 and the pin 1130 is shown. In Figures 18 and 19, the non-parking portion 1146 of the drive member 1140 corresponds to the pin 1130, so the pin elastic member 1194 biases the pin 1130 to the non-parking position, i.e., to a position away from the wheel 1120. At this time, the pin insertion portion 1131 is not inserted into the parking hole 1121, and the wheel 1120 can rotate freely. When the drive member 1140 rotates, the drive slope 1147 pushes the pin 1130, thereby causing the parking portion 1145 to correspond to the pin 1130, so that the pin 1130 overcomes the biasing of the pin elastic member 1194 and reaches the parking position, i.e., a position close to the wheel 1120 (not shown). At this time, the pin insertion portion 1131 is inserted into the parking hole 1121 to prevent the wheel 1120 from rotating.

[0093] The wheel lock structure and link mechanism of the other wheel 1220 will be described below with reference to Figures 6A, 10, and 20-25.

[0094] To provide a braking effect to wheel 1120 and the other wheel 1220, the wheel lock structure includes the other wheel 1220, the other housing 1210, the other pin 1230, the other drive member 1240, the cable 1191, and the link mechanism.

[0095] The other wheel 1220 is positioned in conjunction with wheel 1120 and is rotatably connected to the other housing 1210 around the first axle 1141. The stroller frame 1300 is erected between the other housing 1210 and housing 1110, and the other wheel 1220 has a parking hole (not shown) on the side facing the other housing 1210.

[0096] The other pin 1230 is located within the other housing 1210. The other pin 1230 has substantially the same structure and arrangement as the pin 1130 and can move axially between a parked position and a non-parked position. In the parked position of the other pin 1230, the other pin 1230 is inserted into the other parking hole to prevent the other wheel 1220 from rotating, and in the non-parked position of the other pin 1230, the other pin 1230 is removed from the other parking hole to allow the other wheel 1220 to rotate.

[0097] The other drive member 1240 is rotatably connected to the other housing 1210 and abuts against the end of the other pin 1230. The other drive member 1240 has a parking portion 1245 that protrudes toward the other wheel 1220 on the side that abuts against the other pin 1230, and a non-parking portion 1246 that is recessed away from the other wheel 1220. When the other drive member 1240 rotates, the parking portion 1245 or the non-parking portion 1246 abuts against the other pin 1230, thereby moving the other pin 1230 to its parking or non-parking position. As shown in Figure 24A, the other pin elastic member 1294 is positioned between the other pin 1230 and the other housing 1210 (not shown), and the other pin elastic member 1294 biases the other pin 1230 toward the non-parking position. The other drive ramp 1247 is positioned between the other non-parking section 1246 and the other parking section 1245. While the other drive member 1240 rotates, the other drive ramp 1247 pushes the other pin 1230 to overcome the bias of the other pin elastic member 1294 and reach the parking position. Unlike the drive member 1140, the other drive member 1240 performs a reciprocating motion (described in detail below) and can therefore provide only one parking section and one non-parking section, rather than multiple parking sections and multiple non-parking sections as the drive member 1140 does.

[0098] The other pin 1230 is provided with another first indicator 1234 and a second indicator 1235 having the same configuration and function as the first indicator 1134 and the second indicator 1135, so a description of them will be omitted.

[0099] One end of cable 1191 is connected to the first cable end connector 1171 of the link slider 1170 of the link mechanism. The other end of cable 1191 is connected to the vicinity of the other drive member 1240, specifically to the second cable end connector 1241 around the other drive member 1240. Both ends of cable 1191 may have a hammerhead 1191a (see Figure 28) or a similar structure for joining the first cable end connector 1171 and the second cable end connector 1241. Since the hammerhead is a common joining structure, a detailed explanation thereof is omitted in this application.

[0100] The linkage mechanism includes a link slider 1170 and a link seat 1180. The link slider 1170 is housed in the housing 1110 and is slidable relative to the wheel 1120 in a direction perpendicular to the first axis 1141. The link seat 1180 is housed in the housing 1110 and is slidable relative to the wheel 1120 in a direction parallel to the first axis 1141. The link seat 1180 and the link slider 1170 are engaged in an inclined plane.

[0101] The link mechanism is configured such that when one parking section 1145 contacts the pin 1130, the other parking section 1145 contacts the link seat 1180, the link seat 1180 slides in a direction parallel to the first axis 1141, the link seat 1180 slides the link slider 1170 perpendicular to the axial direction by inclined engagement, and the link slider 1170 rotates the other drive member 1240 via the cable 1191.

[0102] As shown in Figure 25, the link slider 1170 extends substantially perpendicular to the first axis 1141 and includes a cable first end connector 1171 and a slider slope 1172. The cable first end connector 1171 is located at the end of the link slider 1170 away from the first axis 1141, and this end is formed as a cylindrical groove into which, for example, the hammerhead 1191a of the cable 1191 is joined. The slider slope 1172 extends from a substantially intermediate position of the link slider 1170 to the end of the link slider 1190 closer to the first axis 1141 and extends inclined toward the drive member 1140. The slider slope 1172 is provided by two slider slopes arranged side by side perpendicular to the first axis 1141, and a gap is formed between the two slider slopes 1172. The cylindrical portion 1182 of the link sheet 1180 is inserted into the gap so that the link sheet 118O slides axially relative to the link slider 1170.

[0103] The link seat 1180 extends in a direction substantially parallel to the first axis 1141 and comprises a link seat base portion 1181, a cylindrical portion 1182, and a slope portion 1183. The link seat base portion 1181 is located at one end of the link seat 1180 closer to the drive member 1140, the cylindrical portion 1182 extends from the link seat 1180 to the end of the link seat 1180 further from the drive member 1140, and the slope portion 1183 extends laterally from both sides of the link seat 1180 and has an inclination corresponding to the slider slope 1172. The position of the link sheet 1180 relative to the drive member 1140 is such that when one parking portion 1145 of the drive member 1140 contacts the pin 1130, the other parking portion 1145 of the drive member 1140 also contacts the link sheet 1180, and when one non-parking portion 1146 of the drive member 1140 contacts the pin 1130, the other non-parking portion 1146 of the drive member 1140 contacts the link sheet 1180.

[0104] Referring to Figure 26A, pin 1130 and the other pin 1230 are both in a non-parking position. At this time, the two non-parking portions 1146 of the drive member 1140 are in contact with pin 1130 and link seat 1180, respectively. When the drive member 1140 rotates to the state shown in Figure 26B, one parking portion 1145 of the drive member 1140 comes into contact with pin 1130, and pin 1130 reaches its parking position. Meanwhile, the other parking portion 1145 of the drive member 1140 comes into contact with link seat 1180, and link seat 1180 moves away from the drive member 1140 (or in other words, towards wheel 1120). Due to the contact relationship between the slope portion 1183 of link seat 1180 and the slider slope 1172 of link slider 1170, link slider 1170 moves to its near end position (a position close to the bottom). The link slider 1170 moves the other drive member 1240 via the cable 1191, rotating the other drive member 1240 so that the other parking section 1245 contacts the other pin 1230 and enters the parking position. This enables synchronous parking and driving of wheel 1120 and the other wheel 1220.

[0105] Referring to Figures 27 and 28, the cross-sectional view showing the link sheet elastic member 1195 provided between the housing 1110 and the link sheet 118a allows us to understand the configuration of the link slider 1170 and the link sheet 1180.

[0106] Referring to Figures 29 and 30, the parking section 1145 (not shown) contacts the link seat 1180 so that the link seat 1180 slides toward the wheel 1120 (left side in Figure 30). Due to the interaction between the slope section 1183 and the slider slope 1172, the link slider 1170 slides toward the first shaft 1141 (lower side in Figure 30), pulling the cable 1191. Thus, the cable 1191 pulls the other drive member 1240 so that the other parking section 1245 of the other drive member 1240 corresponds to the other pin 1230, and the other pin 1230 reaches the parking position.

[0107] In Figures 31 and 32, the non-parking portion 1146 (not shown) contacts the link seat 1180, biasing it with a link seat elastic member 1195 positioned between the housing 1110 and the link seat 1180, causing it to slide toward the drive member 1140 (right side in Figure 32). Due to the interaction between the slope portion 1183 and the slider slope 1172, the link slider 1170 slides away from the first shaft 1141 (upper side in Figure 32), releasing the cable 1191. Thus, the cable 1191 releases the other drive member 1240 such that the other non-parking portion 1246 of the other drive member 1240 corresponds to the other pin 1230, and the other pin 1230 reaches the non-parking position.

[0108] In short, this application provides a wheel locking structure that allows the user to switch between parked and unparked states simply by pressing an operating component. The wheel locking structure of this application also enables the interlocking of two wheels, allowing the user to switch the parked / unparked state of both wheels simultaneously by pressing a single operating component.

[0109] As shown in Figures 33 and 34, a stroller according to one embodiment of the present disclosure includes a stroller frame 2100, a storage crate 2200, and a locking mechanism 2300. The stroller can be unlocked and locked between the storage crate 2200 and the stroller frame 2100 simply by rotating the handlebar 2220 with one hand, and can be operated without the need for additional operating members, resulting in a simple structure and cost savings.

[0110] Specifically, the stroller frame 2100 includes two handrail support bars 2110, two front leg support bars (not shown), two rear leg support bars, and four wheel assemblies (not shown). The lower ends of the two handrail support bars 2110 are each connected to the upper ends of the two front leg support bars, the two rear leg support bars are each connected at a certain angle to the two middle front leg support bars, and the four wheel assemblies are mounted on the lower ends of the two front leg support bars and the two rear leg support bars, respectively.

[0111] Specifically, as shown in Figures 33 and 34, the storage crate 2200 is detachably attached to the stroller frame 2100. The storage crate 2200 includes a storage basket 2210 and a handlebar 2220. The storage basket 2210 includes a connecting frame 2211 and a cover fabric (not shown) sleeved over the connecting frame 2211. Thus, the cover fabric sleeved over the outside of the connecting frame 2211 forms a storage space for storing items. The connecting frame 2211 is a roughly rectangular frame including a first connecting tube 2211a and a second connecting tube 2211b. Both the first connecting tube 2211a and the second connecting tube 2211b are U-shaped tubes and are connected via a connecting sheet 2330, which will be described later. The handlebar 2220 has a roughly U-shaped rod structure including a crossbar 2221 and two struts 2222 connected to each end of the crossbar 2221. The handlebar 2220 is rotatably connected to the storage basket 2210.

[0112] Specifically, as shown in Figures 35 to 37, this embodiment has two locking mechanisms 2300 located on the left and right sides of the stroller frame 2100, respectively. Each locking mechanism 2300 includes a fixing sheet 2310, an operating member 2320, a connecting sheet 2330, a connecting pin 2340, a connecting cover 2350, a push block 2360, an engaging block 2370, a first reset member 2380, and a positioning member 2390. The configuration of the locking mechanisms 2300 will be described in detail below, using one of the locking mechanisms 2300 as an example.

[0113] As shown in Figure 35, the fixed sheet 2310 is slidably mounted on the handrail support rod 2110. Specifically, a chute 2311 may be provided on the fixed sheet 2310 and a slide rail 2111 on the handrail support rod 2110. The slidable cooperation between the fixed sheet 2310 and the handrail support rod 2110 is achieved by the cooperation between the chute 2311 and the slide rail 2111. The fixed sheet 2310 is provided with an engagement hole 2312 and a cooperation bulge 2313. In this embodiment, the engagement hole 2312 is located above the cooperation bulge 2313. Of course, in other embodiments, the relative position of the engagement hole 2312 and the cooperation bulge 2313 may be set as needed.

[0114] Furthermore, as shown in Figures 37 and 38, the actuating member 2320 is positioned between the connecting sheet 2330 and the connecting cover 2350. The actuating member 2320 is fixed to the end of one strut 2222 of the handlebar 2220 away from the crossbar 2221. The actuating member 2320 comprises a connecting portion 2321 and a substantially disc-shaped drive body 2322. In this embodiment, the connecting portion 2321 and the drive body 2322 are integrally formed. In other embodiments, the connecting portion 2321 and the drive body 2322 may be configured as independent components connected to each other. A housing slot 2322a having a substantially circular cross-section is provided on the side surface of the drive body 2322, and a plurality of positioning recesses 2322b are provided in an annular manner on the side wall of the housing groove 2322a. Push ribs 2322c are further provided in an annular manner on the outer circumferential surface of the drive body 2322, and the push ribs 2322c are positioned inclined with respect to the axial direction of the drive body 2322.

[0115] Furthermore, as shown in Figures 36, 37, and 49, a cooperating slot 2331 is provided on one side of the connecting sheet 2330 away from the operating member 2320, and the cooperating slot 2331 is capable of cooperating with the cooperating bulge 2313. The connecting sheet 2330 is provided with a housing hole 2332 through which the engaging block 2370 movably passes. A connecting arm 2333 is provided on the side of the connecting sheet 2330 facing the operating member 2320. In this embodiment, the connecting sheet 2330 comprises two connecting arms 2333, which are arranged facing each other. In other embodiments, the number and configuration of the connecting arms 2333 can also be adjusted as needed.

[0116] Alternatively, as shown in Figures 36, 37, and 49, each locking mechanism 2300 has two connecting pins 2340 located on either side of the connecting sheet 2330. In this embodiment, the connecting pins 2340 and the connecting sheet 2330 are integrally formed, while in other embodiments, the connecting pins 2340 and the connecting sheet 2330 may be independent structures connected to each other. Furthermore, the two connecting pins 2340 of one locking mechanism 2300 are inserted into and connected to one end of the first connecting tube 2211a and one end of the second connecting tube 2211b, respectively, while the two connecting pins 2340 of the other locking mechanism 2300 are inserted into and connected to the other end of the first connecting tube 2211a and the other end of the second connecting tube 2211b, respectively, so that the first connecting tube 2211a and the second connecting tube 2211b form a substantially rectangular connecting frame 2211. Of course, the configuration of the connection between the first connecting tube 2211a and the second connecting tube 2211b is not limited to this.

[0117] Furthermore, as shown in Figures 36 and 37, in each locking mechanism 2300, the shape of the connecting cover 2350 matches the shape of the connecting sheet 2330. The connecting cover 2350 and the connecting sheet 2330 are formed by closing off a housing space for accommodating the operating member 2320, the engaging block 2370, the positioning member 2390, and the first reset member 2380, thereby making the overall appearance of the stroller simpler and more aesthetically pleasing.

[0118] In this embodiment, as shown in Figures 37 and 39, the push block 2360 and the engagement block 2370 are integrally formed in each locking mechanism 2300. Of course, in other embodiments, the push block 2360 and the engagement block 2370 may be two independent structures connected to each other. As shown in Figures 41 to 44, both ends of the first reset member 2380 abut against the connecting cover 2350 and the engagement block 2370, respectively, and the engagement block 2370 is movably positioned in the housing hole 2332 along the axial direction of the drive body 2322. The engagement block 2370 can move away from the connecting cover 2350 to engage with the engagement hole 2312, thereby achieving locking of the storage crate 2200 and the stroller frame 2100, and conversely, the engagement block 2370 can move towards the connecting cover 235O to disengage from the engagement hole 2312, thereby achieving unlocking of the storage crate 2200 and the stroller frame 2100. The first reset member 2380 constantly biases the engagement block 2370 to move in the direction of engaging with the engagement hole 2312. In this embodiment, the first reset member 2380 is a spring, while in other embodiments, the first reset member 2380 may be another elastic structure. The push block 2360 can abut against the push rib 2322c.

[0119] In this embodiment, as shown in Figures 45 to 48, the push rib 2322c can abut against the side of the push block 2360 away from the connecting cover 2350. Of course, in other embodiments, the push rib 2322c may be provided to abut against other positions on the push block 2360. Since the push rib 2322c is positioned at an angle to the axial direction of the drive body 2322, when the actuator 2320 rotates due to the rotation of the handlebar 2220, the push rib 2322c on the actuator 2320 abuts against the push block 2360 at different positions, causing the push block 2360 to move axially with respect to the drive body 2320, i.e., the engaging block 2370 to move along the axis of the drive body 2322. As shown in Figures 47 and 48, when the handlebar 2220 rotates to a second rotational position (for example, the handlebar 2220 can be positioned vertically), the push rib 2322c abuts against the push block 2360 at position A, which is closest to the connecting cover 2350. At this time, the push block 2360 is positioned close to the connecting cover 2350, that is, furthest from the connecting sheet 2330 and the fixing sheet 2310, and the first reset member 2380 is compressed. At this time, the engagement block 2370 disengages from the engagement hole 2312, and the storage crate 2200 and the stroller frame 2100 are unlocked. As shown in Figures 45 and 46, when the handlebar 2220 rotates to the first rotation position (for example, the handlebar 2220 may be positioned horizontally), the push rib 2322c no longer contacts the push block 2360. At this time, the engagement block 2370 moves away from the connecting cover 2350, i.e., towards the connecting sheet 2330 and the fixing sheet 2310, due to the elastic restoring force of the first reset member 2380. This causes the engagement block 2371 to be inserted into the engagement hole 2312 via the housing hole 2332, thereby enabling the storage crate 2200 and the stroller frame 2100 to be locked.

[0120] Furthermore, as shown in Figures 40, 46, and 48, the positioning member 2390 is provided in the housing slot 2322a. The positioning member 2390 has a substantially hollow disc-shaped structure. The positioning member 2390 is provided with a connecting hole 2391 that cooperates with the connecting arm 2333 to enable connection between the connecting sheet 2330 and the positioning member 2390. Two elastic arms 2392 are provided around the positioning member 2390, facing each other. Each of the two elastic arms 2392 is provided with at least one positioning projection 2392a that coincides with one of the positioning recesses 2322b. This fixes the positioning member 2390 and the connecting sheet 2330 relative to each other. As the handlebar 2220 rotates relative to the positioning member 2390 and the connecting seat 2330, the elastic arm 2392 on the positioning member 2390 elastically deforms, and the positioning projection 2392a on the elastic arm 2392 cooperates with different positioning recesses 2322b depending on the rotation angle of the operating member 2320, thereby locking the handlebar 2220 into the storage crate 2200.

[0121] Furthermore, the locking mechanism 2300 includes a pivot shaft (not shown), with a first pivot hole 2322d provided in the drive body 2322, a second pivot hole 2334 provided in the connecting sheet 2330, a third pivot hole 2351 provided in the connecting cover 2350, and a fourth pivot hole 2393 provided in the positioning member 2390. The pivot shaft passes through the second pivot hole 2334, the fourth pivot hole 2393, the first pivot hole 2322d, and the third pivot hole 2351, enabling the rotation of the drive body 2322 relative to the connecting sheet 2330, the positioning member 2390, and the connecting cover 2350.

[0122] The specific structure of the other locking mechanism 2300 is understood to be the same as that of the locking mechanism 2300 which will not be described further here.

[0123] The procedure for using the above stroller is as follows:

[0124] When it is necessary to unlock and move the storage crate 2200 from the stroller frame 2100, the handlebar 2220 is rotated from a horizontal position to a vertical position, thereby rotating the actuation member 2320 via the handlebar 2220, thereby causing the push rib 2322c to contact the push block 2360 at position A. The push block 2360 moves the engagement block 2370 toward the connecting cover 2350, i.e., toward the connecting sheet 2330 and the fixing sheet 2310, and the first reset member 2380 is compressed, disengaging the engagement block 2370 from the engagement hole 2312, pulling the storage crate 2200 upward and separating the cooperative bulge 2313 from the cooperative slot 2331. At this point, the storage crate 2200 can be unlocked and removed from the stroller frame 2100, as shown in Figures 43, 44, 47, and 48.

[0125] If the storage crate 2200 needs to be secured to the stroller frame 2100, the storage crate 2200 is placed on the stroller frame 2100, thereby cooperating the cooperative slots 2331 (see Figure 37) of the locking mechanisms 2300 on both sides of the storage crate 2200 with the cooperative bulges 2313 (see Figure 35) of the handrail support rods 2110 which are slidably positioned on both sides of the stroller frame 2100. The handlebar 2220 rotates from a vertical position to a horizontal position, and the handlebar 2220 drives and rotates the actuator 2320 so that the push rib 2322c does not come into contact with the push block 2360, and the first reset member 2380 moves the engagement block 2370 together with the push block 236O toward the connecting cover 2350, i.e., toward the connecting seat 2330 and the fixing seat 2310, and the engagement block 2370 engages with the engagement hole 2312, and at the same time the storage crate 2200 is locked to the stroller frame 2100.

[0126] This stroller has at least the following technical benefits:

[0127] In this stroller, the locking mechanism 2300 is provided between the stroller frame 2100 and the storage crate 2200. Locking and unlocking between the storage crate 2200 and the stroller frame 2200 is possible simply by rotating the handlebar 2220, making operation easy. For example, the first rotation position can be set to a horizontal position for the handlebar 2220, and the second rotation position to a vertical position for the handlebar 2220. When it is necessary to remove the storage crate 2200 from the stroller frame 2100, the storage crate 2200 can be unlocked from the stroller frame 2100 and lifted simply by rotating the handlebar 2220 from the horizontal to the vertical position with one hand. Furthermore, since there is no need to provide additional operating members between the stroller frame 2100 and the storage crate 2200 to unlock or lock them, the structure is simple and cost-effective.

[0128] As shown in Figures 50-52, 62, and 63, another embodiment of the present invention provides a stroller comprising a stroller frame 2100, a storage crate 2200, a first engaging seat 2400, a second engaging seat 2500, a cooperating pin 2600, and a second reset member 2700. The stroller can be flexibly designed in terms of its spatial structure, is particularly convenient for arranging two seats, one above the other, and allows the lower seat to avoid interference with the storage crate 2200, thereby achieving a symbiotic effect between the storage crate 2200 and the lower seat. Next, the structure of the stroller will be described in detail using a stroller with two seats, one above the other, as an example. Note that the stroller frame 2100 in this embodiment is not limited to a stroller frame 2100 having a stroller with two seats, one above the other, but is also applicable to a single-seat stroller and other types of strollers.

[0129] Specifically, as shown in Figures 50 to 52, the stroller frame 2100 includes two opposing handrail support bars 2110, two opposing front leg support bars 2120, two opposing rear leg support bars 2130, four wheel assemblies 2140, a first sitting assembly 2150, and a second sitting assembly 2160. The lower ends of the two handrail support bars 2110 are each connected to the upper ends of the two front leg support bars 2120, the two rear leg support bars 2130 are each connected to the two front leg support bars 2120 at a certain angle, and the four wheel assemblies 2140 are installed at the lower ends of the two front leg support bars 2120 and the two rear leg support bars 2130, respectively. In this way, each of the first sitting assembly 2150 and the second sitting assembly 2160 can accommodate one child, thereby achieving the objective of carrying two children simultaneously in the same stroller, which is very convenient for caregivers traveling. In this embodiment, both the first sitting assembly 2150 and the second sitting assembly 2160 are child seats. The first sitting assembly 2150 includes two first back support rods 2151, each connected to two handrail support rods 2110. The second sitting assembly 2160 includes two second back support rods 2161, each connected to two third back support rods 2161. Of course, in other embodiments, as shown in Figures 56 and 57, the first sitting assembly 2150 or the second sitting assembly 2160 can be replaced with a car seat, a crib, or the like, as needed.

[0130] Specifically, as shown in Figures 50 to 52, the storage crate 2200 includes a connecting frame 2211 and a cover fabric (not shown) sleeved over the connecting frame 2211. The cover fabric sleeved over the outside of the connecting frame 2211 forms a storage space for storing articles. The connecting frame 2211 is a substantially rectangular frame positioned on the front leg support rods 2120. In this way, the storage crate 2200 achieves a coexistence effect between the storage crate 2200 and the second sitting assembly 2160 located below it, without interfering with the second sitting assembly 2160 positioned between the two rear leg support rods 2130.

[0131] In this embodiment, as shown in Figures 50 to 52, the storage crate 2200 is connected to the two front leg support rods 2120 via a first engagement sheet 2400 and a second engagement sheet 2500. Of course, in other embodiments, the storage crate 2200 may be connected to the two front leg support rods 2120 in other ways. There are two first engagement sheets 2400 and two second engagement sheets 2500, which are used to connect the left and right sides of the connecting frame 2211 to the two front leg support rods 2120, respectively. Next, we will describe one of the first engagement sheets 2400 and the second engagement sheet 2500 as an example.

[0132] As shown in Figures 61 to 63, the first engagement sheet 2400 comprises a turntable 2410 and a connecting member 2420 connected to each other. In this embodiment, the turntable 2410 and the connecting member 2420 are integrally formed. In other embodiments, the turntable 2410 and the connecting member 2420 may be two separate members connected to each other. The turntable 2410 is rotatably connected to the front leg support rod 2120, and the turntable 2410 has two opposing cooperative slots 2411. The second engagement sheet 2500 has a substantially elongated structure. As shown in Figure 50, one end of the second engagement sheet 2500 is rotatably connected to a substantially intermediate position on the connecting frame 2211 side, and the other end of the second engagement sheet 2500 is rotatably connected to the end of the connecting member 2420 away from the turntable 2410. Thus, the first engagement sheet 2400 and the second engagement sheet 2500 form a structure similar to a rotary joint. When the storage crate 2200 is not needed, the connecting frame 2211 can be rotated and folded so as to overlap the front leg support rod 2120, as shown in Figure 51, thereby saving space without affecting the removal of the child from the second sitting assembly 2160. In addition, the other end of the second engagement sheet 2500 is detachably connected to the end of the connecting member 2420 away from the turntable 2410, as shown in Figure 52, so that when the storage crate 2200 is not needed for an extended period, the second engagement sheet 2500 and the first engagement sheet 2400 can be separated and the storage crate 2200 can be removed from the stroller frame 2100.

[0133] Of course, in other embodiments, as shown in Figures 58 to 60, the first engaging sheet 2400 may include only the connecting member 2420, without limitation. Furthermore, as shown in Figures 62 and 63, the front leg support rod 2120 is provided with a mounting slot 2121, and one cooperative pin 2600 is movably positioned in the mounting slot 212l. One end of the second reset member 2700 abuts against the bottom of the groove of the mounting slot 2121, and the other end abuts against the cooperative pin 2600. The second reset member 2700 constantly biases the cooperative pin 2600 to move toward the cooperative slot 2411, and the cooperative pin 2600 can be inserted into any cooperative slot 24111 to position the first engagement seat 2400 in a specific position. In this embodiment, the second reset member 2700 is a spring, and in other embodiments, the second reset member 2700 may be another elastic structure. For example, the two cooperative slots 2411 may be a first cooperative slot 2411 and a second cooperative slot 2411. When the first engaging sheet 2400 is rotated until the cooperating pin 2600 is inserted into the first cooperating slot 2411, as shown in Figure 62, the first engaging sheet 2400 is in a position where the connecting member 2420 is approximately vertical, and the first engaging sheet 2400 and the second engaging sheet 2500 cooperate with each other to fully open the storage crate 2200. When the second engaging sheet 2500 is rotated until the cooperating pin 2600 is inserted into the second cooperating slot 2411, as shown in Figure 63, the first engaging sheet 2400 is in a position where the connecting member 2420 is tilted downward, and the first engaging sheet 2400 and the second engaging sheet 2500 cooperate with each other to fully fold the storage crate 2200. Of course, the number and arrangement of the cooperating slots 2411 can also be adjusted according to actual needs. For example, one or more cooperative slots 2411 can be provided so that the storage crate 2200 has a semi-folded state between a fully open state and a fully folded state, and this is not limited to this. Of course, the method for achieving position locking of the first engagement sheet 2400 is not limited to the method in which the cooperative slots 2411 and cooperative pins 2600 cooperate with each other as described in this embodiment, and there may be many variations as long as the position of the first engagement sheet 2400 can be fixed.

[0134] Strollers have at least the following technological advantages:

[0135] In such strollers, the storage crate 2200 is installed on the front leg support bar 2120 of the stroller frame 2100, simplifying the spatial structure design of the stroller. In particular, for strollers with two seats, one above the other, the storage crate 2200 is provided on the front leg support bar 2120, which avoids interference between the lower seat of the stroller and the storage crate 2200, thus achieving the effect of coexistence between the storage crate 2200 and the lower seat.

[0136] The technical features of the embodiments described above may be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the embodiments are described. However, as long as there is no contradiction between these combinations of technical features, they should be considered to fall within the scope recorded in this Code.

[0137] Since the present application can be embodied in various forms without departing from its spirit and substance, it should be understood that the embodiments described above are not limited to the details described above, but should be interpreted in the broadest sense within the scope of the claims. Accordingly, all modifications that fall within the scope of the claims or their equivalents should be covered by the claims. [Explanation of Symbols]

[0138] 1110 Housing 1111 Indicator window 1112 Insertion Slots 1113 Pinhole 1114 Wheel axle hole 1120 Wheel 1121 Parking hole 1122 Wheel axle 1130 pins 1131 Pin insertion section 1132 Pin contact area 1133 Pin elastic member housing 1134 First instruction section 1135 Second instruction section 1140 Drive Member 1141 The first axis 1142 Drive member shaft hole 1143 Engaging tooth groove 1143a Engagement limited part 1143b Evasion limited part 1143c Engaging tooth elastic member contact portion 1144 Engaging tooth axis 1145 Parking area 1146 Non-parking area 1147 Drive Slope 1150 Engaging teeth 1151 Front 1152 Rear 1153 Engaging tooth shaft hole 1154 Engaging tooth elastic member housing 1155 The second axis 1160 Operating member 1161 Operating Member Main Body 1162 Pedals 1163 Pressing part 1164 Insertion Post 1170 Link Slider 1171 Cable first end connection 1172 Slider Slope 1180 Link Sheet 1181 Link sheet mounting section 1182 Cylindrical section 1183 Slope section 1191 Cable 1191a Hammerhead 1192 Operating elastic member 1193 Engaging tooth elastic member 1194 Pin elastic member 1195 Link Sheet Elastic Member 1210 The other housing 1220 The other wheel 1230 The other pin 1234 The other first indicator 1235 The other second indicator 1240 Other drive member 1241 Cable second end connection 1245 Other parking area 1246 Other non-parking area 1247 The other drive slope 1294 The other pin elastic member 1300 Stroller Frame 2100 Stroller Frame 2110 Handrail support rod 2111 Slide Rail 2120 Front leg support rod 2121 Mounting Slot 2130 Rear leg support rod 2140 Wheel Assembly 2150 First Sitting Assembly 2151 First backrest support rod 2160 Second Sitting Assembly 2161 Second backrest support rod 2200 Storage Crate 2210 Storage Basket 2211 Connection Frame 2211a First connecting tube 2211b Second connecting tube 2220 Handlebars 2221 Crossbar 2222 Strut 2300 Locking Mechanism 2310 Fixed Sheet 2311 Shot 2312 Engagement hole 2313 Collaborative Bulge 2320 Operating component 2321 Connection part 2322 Drive unit 2322a Storage slot 2322b Positioning recess 2322c Push Rib 2322d First pivot hole 2330 Connection Sheet 2331 Collaborative Slot 2332 Intake 2333 Connecting Arm 2334 Second pivot hole 2340 connection pins 2350 Connection Cover 2351 Third pivot hole 2360 Push Block 2370 Engagement Block 2380 First reset member 2390 Positioning member 2391 connection port 2392 Elastic Arm 2392a Positioning protrusion 2393 Fourth pivot hole 2400 First engagement sheet 2410 Turntable 2411 Collaborative Slot 2420 Connecting Member 2500 Second engagement sheet 2600 Cooperative Pins 2700 Second reset member

Claims

1. An intermittent moving device comprising a housing (1110), a drive member (1140), a plurality of engaging teeth (1150), and an operating member (1160), The drive member (1140) is located within the housing (1110) and is rotatable about the first shaft (1141). The plurality of engaging teeth (1150) are distributed circumferentially on the drive member (1140) based on the first shaft (1141), The operating member (1160) can reciprocate between an initial position and an operating position with respect to the driving member (1140) with respect to the first shaft (1141). When the operating member (1160) moves from the operating position to the initial position, the operating member (1160) returns from the operating position to the initial position by exceeding one of the engaging teeth (1150), and the drive member (1140) does not rotate together with the operating member (1160). An intermittent movement device characterized by the following features.

2. The plurality of engaging teeth (1150) can rotate between an engaging position and an avoidance position relative to the drive member (1140), When the operating member (1160) moves from the initial position to the operating position, the operating member (1160) pushes one of the engaging teeth (1150) into the engaging position, causing the drive member (1140) to rotate along the rotational direction via the engaging tooth (1150). When the operating member (1160) moves from the operating position to the initial position, the operating member (1160) returns from the operating position to the initial position beyond the next engaging tooth (1150) after the first engaging tooth (1150) in the rotational direction, and the drive member (1140) does not rotate together with the operating member (1160). The intermittent moving device according to feature 1.

3. Each of the engaging teeth (1150) can rotate around the second axis (1155) relative to the drive member (1140) between the engaging position and the avoidance position, and the second axis (1155) is parallel to the first axis (1141), or Each of the engaging teeth (1150) is linearly movable between the engaging position and the avoidance position along a direction perpendicular to the first axis (1141). The intermittent movement device according to feature 2.

4. Each of the aforementioned engaging teeth (1150) includes a front surface (1151) and a rear surface (1152), and the front surface (1151) and the rear surface (1152) form an angle with respect to each other. The operating member (1160) includes a pressing portion (1163) that applies a pressing action to one of the engaging teeth (1150), When the operating member (1160) moves from the initial position to the operating position, the pressing portion (1163) of the operating member (1160) presses the front surface (1151) of one of the engaging teeth (1150) so that one of the engaging teeth (1150) is in the engaging position. When the operating member (1160) moves from the operating position to the initial position, the pushing portion (1163) moves beyond the next engaging tooth (1150) and presses the rear surface (1152) of the next engaging tooth (1150) to move the next engaging tooth (1150) to an avoidance position. The intermittent moving device according to claim 2 or 3.

5. The intermittent movement device further includes a plurality of engaging tooth elastic members (1193), The plurality of engaging tooth elastic members (1193) are positioned between the plurality of engaging teeth (1150) and the driving member (1140), and bias the engaging teeth (1150) to the engaged position. In the engagement position, the engagement teeth (1150) protrude radially with respect to the first axis (1141) more than in the avoidance position. The intermittent moving device according to any one of claims 2 to 4.

6. The engaging tooth elastic member (1193) is a compression spring, and each of the engaging teeth (1150) includes an engaging tooth elastic member housing portion (1194) that houses at least one end of each of the engaging tooth elastic members (1193). The intermittent movement device according to feature 5.

7. The drive member (1140) includes a plurality of engagement tooth grooves (1143), The plurality of engagement tooth grooves (1143) are formed in a concave shape from one side of the drive member (1140), are distributed circumferentially based on the first shaft (1141), and each of the plurality of engagement teeth (1150) is accommodated. Each of the aforementioned engagement tooth grooves (1143) includes an engagement limiting portion (1143a), an avoidance limiting portion (1143b), and an engagement tooth elastic member contact portion (1143c), The engagement limiting portion (1143a) prevents the corresponding engagement tooth (1150) from rotating beyond the engagement position relative to the drive member (1140) when the corresponding engagement tooth (1150) is in its engagement position. The avoidance limiting portion (1143b) prevents the corresponding engaging tooth (1150) from rotating beyond the avoidance position relative to the drive member (1140) when the corresponding engaging tooth (1150) is in the avoidance position. The engagement tooth elastic member contact portion (1143c) is positioned adjacent to the engagement limiting portion (1143a) so that the other end of the engagement tooth elastic member (1193) can contact it. The intermittent moving device according to any one of claims 2 to 6.

8. The engagement limiting portion (1143a), the avoidance limiting portion (1143b), and the engagement tooth elastic member contact portion (1143c) are all axially extending walls of the engagement tooth groove (1143), the engagement limiting portion (1143a) is radially opposite to both the avoidance limiting portion (1143b) and the engagement tooth elastic member contact portion (1143c), the engagement limiting portion (1143a) is the radial outer wall of the engagement tooth groove (1143), and the avoidance limiting portion (1143b) and the engagement tooth elastic member contact portion (1143c) are each the radial inner walls of the engagement tooth groove (1143). The intermittent moving device according to feature 7.

9. The stroke of the operating member (1160) with each reciprocating motion is greater than or equal to the distance between two adjacent engaging teeth (1150). The intermittent moving device according to any one of claims 1 to 8.

10. The operating member (1160) further includes an operating member body (1161), the operating member body (1161) is arranged coaxially with the drive member (1140) along the first shaft (1141), The plurality of engaging teeth (1150) are arranged on the side of the drive member (1140) facing the operating member main body (1161), The pushing portion (1163) is positioned on the side of the operating member body (1161) facing the drive member (1140), and when the operating member (1160) moves from the initial position to the operating position, the pushing portion (1163) protrudes axially and pushes the engaging teeth (1150). The intermittent moving device according to any one of claims 1 to 9.

11. The housing (1110) includes a disk surface facing the operating member body (1161), and an insertion slot (1112) extending in the circumferential direction is formed on the disk surface. The operating member (1160) further includes an insertion post (1164) extending axially inside the housing (1110), When the operating member (1160) reciprocates relative to the drive member (1140), the insertion post (1164) is inserted into the insertion slot (1112) and slides along the insertion slot (1112), and the insertion slot (1112) limits the stroke of movement of the operating member (1160) between the operating position and the initial position. The intermittent movement device further includes an operating elastic member (1192), which is positioned in the insertion slot (1112), abuts between the end wall of the insertion slot (1112) and the insertion post (1164), and biases the operating member (1160) to the initial position. The intermittent movement device according to feature 10.

12. A wheel lock structure comprising an intermittent movement device according to any one of claims 1 to 11, a wheel (1120), and a pin (1130), The wheel (1120) is rotatably connected to the housing (1110) about the first shaft (1141), the wheel (1120) has a parking hole (1121) on the side facing the housing (1110), the operating member (1160) and the wheel (1120) are located on the opposite side of the drive member (1140), The pin (1130) is positioned in the housing (1110) and between the drive member (1140) and the wheel (1120), and is capable of moving axially between a parked position and a non-parked position, in the parked position the pin (1130) is inserted into the parking hole (1121) to prevent the rotation of the wheel (1120), and in the non-parked position the pin (1130) is disengaged from the parking hole (1121) to allow the rotation of the wheel (1120). The drive member (1140) of the intermittent moving device is rotatably connected to the housing (1110) and abuts against one end of the pin (1130). The drive member (1140) comprises a parking portion (1145) protruding from the wheel (1120) and a non-parking portion (1146) recessed away from the wheel (1120) on the side that abuts against the pin (1130). When the drive member (1140) rotates, the parking portion (1145) or the non-parking portion (1146) abuts against the pin (1130), causing the pin (1130) to move to the parking position or the non-parking position. A wheel lock structure characterized by the following features.

13. The pin (1130) comprises a first indicator (1134) and a second indicator (1135), the first indicator (1134) and the second indicator (1135) being arranged along an axis and having different visual effects. An indicator window (1111) is provided in the peripheral wall of the housing (1110), and when the pin (1130) is in the non-parking position, the first indicator portion (1134) is exposed to the outside in a position corresponding to the indicator window (1111), and when the pin (1130) is in the parking position, the second indicator portion (1135) is exposed to the outside in a position corresponding to the indicator window (1111). The wheel lock structure according to feature 12.

14. The pin elastic member (1194) is positioned between the pin (1130) and the housing (1110), and the pin elastic member (1194) biases the pin (1130) to the non-parked position. The wheel lock structure according to feature 12 or 13.

15. The parking area (1145) and the non-parking area (1146) are alternately distributed around the shaft of the drive member (1140). A wheel lock structure according to any one of claims 12 to 14.

16. The wheel lock structure further includes the other wheel (1220), the other pin (1230), the other drive member (1240), and the cable (1191). The other wheel (1220) is positioned in pair with the wheel (1120) and is rotatably connected to the other housing (1210) about the first shaft (1141), and the other wheel (1220) has the other parking hole on the side facing the other housing (1210), The other pin (1230) is provided in the other housing (1210) and can move axially between a parked position and a non-parked position. In the parked position of the other pin (1230), the other pin is inserted into the parking hole of the other and prevents the rotation of the other wheel (1220). In the non-parked position of the other pin (1230), the other pin is disengaged from the parking hole of the other and allows the rotation of the other wheel (1220). The other drive member (1240) is rotatably connected to the other housing (1210) and is connected by abutting one end of the other pin (1230). The other drive member (1240) comprises a parking portion (1245) protruding from the other wheel (1220) and a non-parking portion (1246) recessed away from the other wheel (1220) on the side that abuts the other pin (1230). When the other drive member (1240) rotates, the parking portion (1245) or the non-parking portion (1246) abuts the other pin (1230), moving the other pin (1230) to the other parking position or the other non-parking position. The cable (1191) has one end connected to a second cable end connector (1241) provided on the outer circumference of the other drive member (1240), and the other end is connected to the drive member (1140) via a link mechanism. When one of the parking sections (1145) of the drive member (1140) comes into contact with the pin (1130) and enters its parking position, the drive member (1140) moves the other drive member (1240) via the link mechanism and the cable (1191), causing the other drive member (1240) to rotate toward the other parking section (1245) and come into contact with the other pin (1230) and enter its parking position. A wheel lock structure according to any one of claims 12 to 15, characterized by the features described herein.

17. The link mechanism includes a link slider (1170) and a link seat (1180), The link slider (1170) is positioned in the housing (1110) and can slide relative to the wheel (1120) in a direction perpendicular to the first axis (1141), and the other end of the cable (1191) is connected to the first cable end connector (1171) of the link slider (1170). The link seat (1180) is positioned in the housing (1110) and can slide relative to the wheel (1120) in a direction parallel to the first axis (1141), and the link seat (1180) and the link slider (1170) engage at an inclined surface, The link mechanism is configured such that when one parking portion (1145) contacts the pin (1130), the other parking portion (1145) contacts the link seat (1180), causing the link seat (1180) to slide in a direction parallel to the first axis (1141), and the link seat (1180) slides the link slider (1170) vertically in the axial direction by inclined engagement, causing the link slider (1170) to rotate the other drive member (1240) via the cable (1191). The wheel lock structure according to feature 16.

18. It is a stroller, Stroller frame (1300) and The aforementioned stroller frame (1300) and the standing stroller seat, The front wheel and rear wheel are positioned below the stroller frame (1300), The wheel lock structure described in any one of claims 12 to 17, The wheel is either the front wheel or the rear wheel. A stroller characterized by the following features.

19. A stroller comprising a stroller frame (2100), a storage crate (2200), and a locking mechanism (2300), The storage crate (2200) is detachably positioned on the stroller frame (2100) and includes a storage basket (2210) and a handlebar (2200), the handlebar (2200) being rotatably connected to the storage basket (2210), The handlebar (2200) can be rotated to a first rotational position to lock the locking mechanism (2300) so that the storage crate (2200) and the stroller frame (2100) are locked relative to each other, and the handlebar (2200) can be rotated to a second rotational position to unlock the locking mechanism (2300) so that the storage crate (2200) and the stroller frame (2100) are unlocked relative to each other. A stroller characterized by the following features.

20. The locking mechanism (2300) includes an operating member (2320), a first locking part, and a second locking part, wherein the operating member (2320) is fixed to the handlebar (2200), the first locking part is provided on the storage crate (2200), and the second locking part is provided on the stroller frame (2100), and the handlebar (2200) rotates to rotate the operating member (2320), thereby driving the operating member (2320) to lock the first locking part and the second locking part together or to unlock them together. The stroller according to feature 19.

21. The operating member (2320) is provided with an inclined push rib (2322c), the first locking portion is an engagement block (2370), and the second locking portion is an engagement hole (2312). When the handlebar (2200) rotates to the second rotation position, the handlebar (2200) rotates the operating member (2320), thereby driving the push rib (2322c) to disengage the engagement block (2370) from the engagement hole (2312). The stroller according to feature 20.

22. The locking mechanism (2300) further includes a pushing block (2360) fixedly connected to the engaging block (2370), the pushing block (2360) being able to abut against the push rib (2322c). The stroller according to feature 21.

23. The locking mechanism (2300) further includes a first reset member (2380), which constantly biases the engaging block (2370) to move in a direction that engages with the engaging hole (2312). The stroller according to feature 21 or 22.

24. The locking mechanism (2300) further includes a fixed seat (2310) provided on the stroller frame (2100) and a connecting seat (2330) provided on the storage basket (2210), wherein the engagement hole (2312) is provided on the fixed seat (2310) and the engagement block (2370) is movably provided on the connecting seat (2330). A stroller according to any one of the features described in item 21 to 23.

25. The fixed sheet (2310) is provided with a cooperative bulge (2313), and the connecting sheet (2330) is provided with a cooperative slot (2331) that matches the cooperative bulge (2313). The stroller according to feature 24.

26. The locking mechanism (2300) further includes a first reset member (2380) and a connecting cover (2350), wherein the first reset member (2380) is located between the connecting cover (2350) and the connecting sheet (2330), the connecting sheet (2330) has a housing hole (2332), both ends of the first reset member (2380) abut against the connecting cover (2350) and the engaging block (2370), respectively, and the engaging block (2370) is movably provided in the housing hole (2332). The stroller according to feature 24 or 25.

27. The locking mechanism (2300) further includes a positioning member (2390), the positioning member (2390) is fixedly connected to the connecting sheet (2330), the operating member (2320) is rotatably connected to the positioning member (2390), and the operating member (2320) can be fixed in multiple positions relative to the positioning member (2390). A stroller according to any one of claims 24 to 26.

28. The positioning member (2390) is provided with at least one connecting hole (2391), and the connecting sheet (2330) is provided with at least one connecting arm (2392) that can be fixed in cooperation with the connecting hole (2391). The stroller according to feature 27.

29. The positioning member (2390) comprises at least one first positioning portion, and the connecting sheet (2330) comprises a plurality of second positioning portions in the circumferential direction, wherein the plurality of second positioning portions can cooperate with the first positioning portion along the circumferential direction, or the connecting sheet (2330) comprises at least one first positioning portion, and the positioning member (2390) comprises a plurality of second positioning portions that can cooperate with the first positioning portion along the circumferential direction. The stroller according to feature 27 or 28.

30. The positioning member (2390) comprises at least one elastic arm (2392), the elastic arm (2392) comprises at least one positioning projection (2392a), and the connecting sheet (2330) comprises a plurality of positioning recesses (2322b) in the circumferential direction that can cooperate with the positioning projection (2392a). A stroller according to any one of claims 27 to 29.

31. The stroller frame (2100) includes a handrail support bar (2110), and the fixed seat (2310) is slidably mounted on the handrail support bar (2110). A stroller according to any one of the features of 24 to 30.

32. The storage basket (2210) includes a connecting frame (2211) and a cover fabric that is sleeved over the connecting frame (2211). A stroller according to any one of claims 19 to 31.

33. The connecting frame (2211) includes a first connecting tube (2211a) and a second connecting tube (2211b), and two locking mechanisms (2300) are located on the left and right sides of the stroller frame (2100), respectively, and the connecting pins (2340) are positioned on both sides of the connecting sheet (2330) of each locking mechanism (2300) and are inserted into and connected to one end of the first connecting tube (2211a) and one end of the second connecting tube (2211b). The stroller according to feature 32.

34. It is a stroller, A stroller frame (2100) including a front leg support bar (2120), Includes a storage crate (2200) provided on the front leg support bar (2120), A stroller characterized by the following features.

35. The storage crate (2200) includes a connecting frame (2211) and a cover fabric that is sleeved on the connecting frame (2211), the connecting frame (2211) being provided on the front leg support rod (2120), The stroller according to feature 34.

36. The connecting frame (2211) is rotatably connected to the front leg support rod (2120). The stroller according to feature 35.

37. The stroller further includes a first engagement seat (2400) and a second engagement seat (2500), wherein the first engagement seat (2400) is provided on the front foot support rod (2120) and the second engagement seat (2500) is provided on the connecting frame (2211). The stroller according to feature 35 or 36.

38. One end of the first engagement sheet (2400) is rotatably connected to the second engagement sheet (2500), and the other end of the first engagement sheet (2400) is rotatably connected to the front leg support rod (2120). The stroller according to feature 37.

39. The first engagement seat (2400) includes a turntable (2410) pivotally attached to the front foot support rod (2120), the turntable (2410) having a plurality of first cooperating parts circumferentially, and the stroller further includes a second cooperating part movably mounted on the front foot support rod (2120), the second cooperating part being able to cooperate with any of the first cooperating parts. The stroller according to feature 37 or 38.

40. The first cooperating part is a cooperating slot (2411) provided on the turntable (2410), and the second cooperating part is a cooperating pin (2600) movably provided on the front foot support rod (2120). The stroller according to feature 39.

41. The stroller further includes a second reset member (2700), the second reset member (2700) constantly biases the cooperating pin (2600) to move in a direction closer to the cooperating slot (2411). The stroller according to feature 40.

42. The first engaging sheet (2400) and the second engaging sheet (2500) are detachably connected. A stroller according to any one of claims 37 to 41.

43. The stroller frame (2100) further includes a first sitting assembly (2150), a second sitting assembly (2160), two handrail support bars (2110), and two rear leg support bars (2130), wherein the first sitting assembly (2150) is provided between the two handrail support bars (2110), and the second sitting assembly (2160) is provided between the two rear leg support bars (2130). A stroller according to any one of features 34 to 41.

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