Fastening apparatus having rotation limiting function and carrier

Abstract

This invention discloses a locking device with a rotation limiting function and a child carrier. The locking device includes: a seat having a first sliding groove; a rotating member pivotally connected to the seat and having at least two locking states in the circumferential direction; the rotating member having a second sliding groove; a locking member having a locked state and an unlocked state; in the locked state, the rotating member is in a locked state, and the locking member is simultaneously in the first sliding groove and the second sliding groove; in the unlocked state, the locking member retracts from the first sliding groove or the second sliding groove to allow the rotating member to rotate relative to the seat, thereby allowing switching of the locking state of the rotating member; an elastic element operably connected to the locking member for holding the locking member in the locked state; and a release member operably connected to the locking member for driving the locking member to move against the elastic force of the elastic element, thereby switching the locking member from the locked state to the unlocked state.

Description

[Technical Field]

[0001] This invention relates to a locking device and carrier with a rotation limiting function. [Previous Technology]

[0002] A double-seat stroller has two seats, allowing it to carry two toddlers at once. Common double-seat strollers have two seats side-by-side, allowing the two toddlers to interact while riding. However, this side-by-side arrangement makes the stroller too wide, which can seriously obstruct pedestrians in narrow areas, posing a safety hazard. Some double-seat strollers use an over-under design, with one seat above the other. This type of stroller makes full use of the longitudinal space, significantly reducing the stroller's width, and has recently gained popularity among many users.

[0003] In some double-seat strollers with an upper and lower seat arrangement, one seat can be removed to accommodate situations where only one toddler is being taken out. The bottom frame of this detachable seat is generally detachably connected to a latching mechanism on the stroller. When the seat is removed, the latching mechanism, because it cannot be folded down, protrudes towards the seated toddler, potentially causing injury. Furthermore, the protruding latching mechanism affects the stroller's clean and aesthetically pleasing appearance and results in a larger packaging volume, leading to increased transportation costs. [Summary of the Invention]

[0004] The present invention aims to provide a locking device with a rotation limiting function, the position of which is easily adjustable to meet different usage requirements. The present invention also provides a carrier.

[0005] In one aspect, the present invention provides a locking device with a rotation limiting function, suitable for coupling a container, comprising: a base having a first sliding groove; a rotating member pivotally connected to the base and having at least two locking states in the circumferential direction, each adjacent pair of said locking states being spaced apart by a predetermined angle; the rotating member having a second sliding groove; a locking member having a locked state and an unlocked state; in the locked state, the rotating member is in one of the at least two locking states, the locking member being simultaneously in the first sliding groove and the second sliding groove to restrict rotation of the rotating member relative to the base; in the unlocked state, the locking member disengages from the first sliding groove or the second sliding groove to allow rotation of the rotating member relative to the base, thereby allowing switching of the locking state of the rotating member; an elastic element operably connected to the locking member for holding the locking member in the locked state; and a release member operably connected to the locking member for driving the locking member to move against the elastic force of the elastic element, thereby switching the locking member from the locked state to the unlocked state.

[0006] Further, the cross-sectional outer contours of the first sliding groove and the second sliding groove are both in the form of a first regular polygon; the cross-sectional outer contour of the locking member is in the form of a second regular polygon corresponding to the first regular polygon.

[0007] Further, the locking member includes a central portion and a protrusion that protrudes radially from the central portion; the first sliding groove has a first central groove and a first extension groove communicating with the first central groove; the second sliding groove has a second central groove and a second extension groove communicating with the second central groove; wherein the number of the protrusions is configured to be at least one, and the number of at least one of the first extension groove and the second extension groove is configured to be at least two; the central portion is used to slide with the first central groove and the second central groove, and the protrusion is used to slide with the first extension groove and the second extension groove.

[0008] Further, the protrusions are configured in multiples, and the multiple protrusions are evenly spaced around the central portion; the number of the first extension groove and the second extension groove are each configured in multiples to cooperate with the multiple protrusions.

[0009] Further, the protrusion and the first extension groove are each configured as one, and the second extension groove is configured as two or more.

[0010] Further, the seat and the rotating member are pivotally connected by a fastener; the locking member is sleeved on the outside of the fastener, and the elastic element and the releasing member are respectively used to drive the locking member to move in the axial direction of the fastener so that the locking member switches between the locked state and the unlocked state.

[0011] Further, the locking member is located between the elastic element and the releasing member; the elastic element is accommodated in the first sliding groove or the second sliding groove, and the releasing member is attached to the rotating member or the seat.

[0012] Further, the seat has a first sleeve portion located in the first sliding groove; the rotating member has a second sleeve portion located in the second sliding groove, the fastener is installed in the first sleeve portion and the second sleeve portion; the locking member is sleeved on the outside of the first sleeve portion and / or the second sleeve portion.

[0013] Further, the release element is a button, the first end of the release element is adapted to be subjected to force, and the second end of the release element abuts against the locking element.

[0014] Further, the rotating member has an inner side facing away from the seat, and the unlocking member is attached to the rotating member and the first end of the unlocking member corresponds to the inner side of the rotating member.

[0015] In another aspect, the present invention provides a carrier, the support of which is configured with the above-mentioned engaging device with rotation limiting function, the carrier including a first frame for providing a first carrying position and a second frame for providing a second carrying position, the second frame being detachably connected as the carrying device to the rotating member of the engaging device with rotation limiting function.

[0016] Further, the carrier is a stroller and the rotating component is a snap-fit ​​connector.

[0017] The engaging device with rotation limiting function provided in this embodiment, when the rotating member is in a locked state, the elastic element holds the locking member in the locked state, and the rotation of the rotating member relative to the seat is restricted. When it is necessary to change the locked state of the rotating member, the release element is operated, causing the release element to drive the locking member to move against the elastic force of the elastic element, thereby changing the locking member from the locked state to the unlocked state, and then the rotating member is twisted. When the rotating member switches to another suitable locked state, the release element is released, and the elastic element drives the locking member to move, causing the locking member to switch back from the unlocked state to the locked state, thus locking the rotating member in other locked states. The position adjustment operation of the rotating member of this engaging device is easy to implement, allowing the rotating member to meet a variety of different usage requirements.

Implementation Method

[0034] Figures 1 to 3 illustrate the structure of a locking device (also referred to herein as a locking device) 100 with a rotation limiting function provided in an embodiment of the present invention. This locking device 100 can be applied to various types of children's vehicles, for example. Of course, the application scope of this locking device 100 is not limited to children's vehicles; it can be applied to any suitable device, for example, it can be coupled (or connected) to the carrying devices of various types of vehicles such as shopping carts and pet carriers. Referring to Figures 1 to 3, the locking device 100 may include a seat 1, a rotating member 2, a locking member 3, an elastic element 4, and a releasing member 5.

[0035] The seat 1 can be mounted, for example, at any suitable location on any suitable device (e.g., on a carrier bracket). The rotating member 2 is connected to the seat 1 and can rotate relative to the seat 1 about axis XX, thereby pivotally connecting the rotating member 2 to the seat 1. In this embodiment, the rotating member 2 includes a body 2a and a cover 2b, the cover 2b being fastened to the body 2a. Of course, the structure of the rotating member 2 is not limited to this structure. The rotating member 2 has at least two locking states in the circumferential direction relative to axis XX, with a predetermined angle between each two adjacent locking states, which can be set to any suitable value as needed. When the rotating member 2 reaches any locking state, its rotation relative to the seat 1 can be locked, thereby holding the rotating member 2 in that locked state. It is understood that by rotating the rotating member 2 about axis XX and locking it in different locking states as needed, the rotating member 2 can have different states, thereby meeting different user needs. For example, when the rotating part 2 is in a locked state, it can correspond to the used state of the rotating part 2; when the rotating part 2 is in another locked state, it can correspond to the retracted state of the rotating part 2.

[0036] The base 1 has a first sliding groove 11, and the rotating member 2 has a second sliding groove 21, for example, the opening direction of the first sliding groove 11 is opposite to the opening direction of the second sliding groove 21. The locking member 3 is associated with the first sliding groove 11 and the second sliding groove 21, and can slide along the first sliding groove 11 and the second sliding groove 21, thereby giving the locking member 3 a locked state and an unlocked state. The structure of the first sliding groove 11, the second sliding groove 21 and the locking member 3 will be described in detail below.

[0037] Referring to Figure 7, in the locked state, the locking member 3 is simultaneously located in the first sliding groove 11 and the second sliding groove 21, thereby restricting the relative rotation between the rotating member 2 and the seat 1, locking the rotating member 2 in any one of the locked states. Referring to Figure 8, in the unlocked state, the locking member 3 can exit from either the first sliding groove 11 or the second sliding groove 21 and retract into the other of the first sliding groove 11 and the second sliding groove 21. In Figure 8, the locking member 3 exits from the second sliding groove 21 and retracts completely into the first sliding groove 11. At this time, the rotating member 2 is allowed to rotate relative to the seat 1, thereby allowing the rotating member 2 to switch to other locked states. Of course, in some other embodiments, the locking member 3 can, for example, exit from the first sliding groove 11 and retract into the second sliding groove 21, provided that the locking member 3 does not interfere with the rotation of the rotating member 2 in the unlocked state.

[0038] The elastic element 4 is operably connected to the locking element 3 to hold the locking element 3 in the locked state, thereby holding the rotating element 2 in the locked state. The unlocking element 5 is operably connected to the locking element 3 to drive the locking element 3 from the locked state to the unlocked state. It should be noted that, in this article, when two components are operably connected, the relationship between the two components can be direct connection, indirect connection, direct contact, indirect abutment, etc. When one of the two components moves actively or passively, it can trigger the movement of the other component.

[0039] In the locking device 100 provided in this embodiment, when the rotating member 2 is in a locked state, the elastic element 4 holds the locking member 3 in the locked state. When it is necessary to change the locked state of the rotating member 2, the release element 5 is operated, causing the release element 5 to drive the locking member 3 to move against the elastic force of the elastic element 4, so that the locking member 3 changes from the locked state to the unlocked state, and then the rotating member 2 is twisted. For example, when the rotating member 2 switches to an adjacent locked state, the release element 5 is released, and the elastic element 4 drives the locking member 3 to move, so that the locking member 3 switches back from the unlocked state to the locked state, thereby reliably locking the rotating member 2 to other locked states.

[0040] The locking device 100 of this embodiment can easily adjust the rotating member 2 to different locking states, so that the position of the rotating member 2 can meet different needs under different circumstances, and avoid the occurrence of obstacles or even harm to the user due to the unsuitable locking state of the rotating member 2.

[0041] Referring to Figures 7 and 8, in some embodiments, the seat 1 and the rotating member 2 are pivotally connected by a fastener 6, the locking member 3 is sleeved on the outside of the fastener 6, and the elastic element 4 and the releasing element 5 are respectively used to drive the locking member 3 to move axially in the fastener 6, so that the locking member 3 switches between a locked state and an unlocked state. In this embodiment, the locking member 3 is sandwiched between the elastic element 4 and the releasing element 5, and the elastic element 4 and the releasing element 5 are used to apply forces in opposite axial directions to the locking member 3. Of course, in some embodiments not shown, the elastic element 4 and the releasing element 5 may, for example, be arranged close to the same end of the locking member 3.

[0042] Referring to FIG. 2, this embodiment illustrates an exemplary implementation of the elastic element 4 and the release element 5. Specifically, the elastic element 4 is a spring sleeved outside the fastener 6, which is accommodated in the first sliding groove 11 and contacts the first end of the locking member 3. Referring to FIG. 4, the first end 41 of the elastic element 4 is used to contact the locking member 3, and the second end 42 of the elastic element 4 is used, for example, to contact the bottom of the first sliding groove 11. The release element 5 is a button attached to the rotating member 2. The first end of the release element 5 is exposed to receive, for example, pressing pressure from the operator, and the second end of the release element 5 extends into the second sliding groove 21 to press against the locking member 3.

[0043] In some embodiments, the rotating member 2 has an inner side 20a facing away from the seat 1, and the first end of the releasing member 5 corresponds to the inner side 20a of the rotating member 2. Thus, when the engaging device 100 is applied to a stroller and the child's seat position is higher than the engaging device 100, because the releasing member 5 is located below and inside the child, the child is less likely to touch the releasing member 5, effectively preventing accidental rotation of the rotating member 2 due to accidental contact by the child. It is understood that in other embodiments, the positions of the elastic element 4 and the releasing member 5 can be interchanged; for example, the elastic element 4 can be accommodated in the second sliding groove 21, and the releasing member 5, used as a button, can be attached to the seat 1.

[0044] Referring to Figures 3, 4, and 5, in some embodiments, the base 1 may be provided with a first sleeve portion 12, which is located in a first sliding groove 11. The rotating member 2 may be provided with a second sleeve portion 22, which is located in a second sliding groove 21. The axes of the first sleeve portion 12, the second sleeve portion 22, and the axis X are substantially coincident. In some embodiments, the first sleeve portion 12 has a first central hole 120, and the second sleeve portion 22 has a second central hole 220. The fastener 6 is installed in the first central hole 120 and the second central hole 220. The fastener 6 ensures the pivotal connection between the base 1 and the rotating member 2 while preventing the rotating member 2 from accidentally falling off the base 1. The fastener 6 may be, for example, a rivet, or a connecting post with a head at one end and a resilient clip at the other end, or any other suitable component.

[0045] Referring to Figures 7 and 8, the locking member 3 has a central hole 30, and the fastener 6, the first sleeve portion 12, and the second sleeve portion 22 are sleeved in the central hole 30. The elastic element 4 is sleeved outside the first sleeve portion 12. In some embodiments, the central hole 30 may include a hole segment 301 and a hole segment 302, wherein the hole segment 301 can be used as a cavity to receive the end of the elastic element 4, and the hole segment 302 can be used for sliding engagement with the first sleeve portion 12 and / or the second sleeve portion 22.

[0046] Referring to FIG7, in some embodiments, the opposing end faces of the first sleeve portion 12 and the second sleeve portion 22 may be fitted together by a stepped structure, which helps to improve the structural strength of the engaging device 100. Of course, in other embodiments, there may be a gap between the opposing end faces of the first sleeve portion 12 and the second sleeve portion 22, or for example, the opposing end faces of the first sleeve portion 12 and the second sleeve portion 22 may both be planar and abut against each other.

[0047] It should be noted that, although in this embodiment, the base 1 and the rotating member 2 are respectively provided with a first sleeve portion 12 and a second sleeve portion 22, and the fastener 6 is installed in the first sleeve portion 12 and the second sleeve portion 22, in other embodiments, the first sleeve portion 12 and the second sleeve portion 22 may not be provided. In this case, the elastic element 4 may be directly sleeved on the fastener 6, and the hole segment 302 may be directly slidably engaged with the fastener 6.

[0048] Referring again to Figure 2, this embodiment also shows an exemplary implementation of the release member 5. The release member 5 includes a pressing part 51 and a plurality of elastic arms 52 extending from the pressing part 51. The pressing part 51 forms the first end of the release member 5 and is used to receive pressing force. The free ends of the plurality of elastic arms 52 form the second end of the release member 5, and each elastic arm 52 is provided with a locking plate 520. The rotating member 2 is provided with a plurality of through holes 201 communicating with the second sliding groove 21. The free ends of the plurality of elastic arms 52 pass through the plurality of through holes 201 and abut against the locking member 3 so as to apply pressing force to the locking member 3. It can be understood that the locking plates 520 on each elastic arm 52 are used to prevent the release member 5 from accidentally falling off the rotating member 2.

[0049] Referring again to Figures 4 to 6, an exemplary structure of the first sliding groove 11, the second sliding groove 21 and the locking member 3 is described in detail below.

[0050] The locking member 3 may include a central portion 31 and four protrusions 32 projecting radially from the central portion 31. The four protrusions 32 are evenly arranged at 90° intervals in the circumferential direction. Each protrusion 32 may also have a weight-reducing recess 320. The central hole 30 of the locking member 3 is located in the central portion 31. The first sliding groove 11 has a first central groove 110 and four first extension grooves 111 communicating with the first central groove 110. The second sliding groove 21 has a second central groove 210 and four second extension grooves 211 communicating with the second central groove 210. The central portion 31 is used for sliding engagement with the first central groove 110 and the second central groove 210, and the protrusions 32 are used for sliding engagement with the first extension grooves 111 and the second extension grooves 211. It can be understood that the first extension grooves 111 and the second extension grooves 211 are also evenly arranged at 90° intervals in the circumferential direction.

[0051] Referring to Figures 2 and 7, it can be seen that when the locking member 3 is simultaneously in the first sliding groove 11 and the second sliding groove 21, the rotation of the rotating member 2 relative to the seat 1 is restricted by the abutment of the side wall of the protrusion 32 against the side walls of the first extension groove 111 and the second extension groove 211. Referring to Figure 8, it can be seen that when the locking member 3 is fully retracted into the first sliding groove 11, the protrusion 32 disengages from the second extension groove 211, and the rotating member 2 can rotate relative to the seat 1. The above-mentioned locking device 100, through the cooperation of the locking member 3 and the second sliding groove 21, can enable the rotating member 2 to have four locking states in the circumferential direction.

[0052] It is understood that by changing the configuration of the locking member 3, the first sliding groove 11, and / or the second sliding groove 21, the locking member 3 can provide other numbers of locking states in the circumferential direction. For example, in some embodiments, the protrusions 32 can be configured to be three, five, or more, with the plurality of protrusions 32 evenly spaced around the central portion 31. The number of the first extension groove 111 and the second extension groove 211 is also correspondingly configured to be three, five, or more, to cooperate with the plurality of protrusions 32.

[0053] Referring to Figures 9 and 10, in some embodiments, the protrusion 32 is configured as one, the first extension groove 111 is configured as one, and the second extension groove 211 is configured as two. It can be understood that the engagement of the protrusion 32 with different second extension grooves 211 allows the rotating member 2 to have two locking states in the circumferential direction. In Figure 10, the two second extension grooves 211 are spaced 180° apart, therefore the two locking states of the rotating member 2 are spaced 180° apart. It can be understood that in other embodiments, the two second extension grooves 211 can be spaced at any other suitable angle. Furthermore, in other embodiments, the number of second extension grooves 211 can be configured to be more than two.

[0054] Referring to FIG11, in some embodiments, the protrusions 32 may be configured as two, with the two protrusions 32 spaced 180° apart in the circumferential direction, and the first extension grooves 111 are also configured as two, spaced 180° apart. The protrusions 32 of this configuration can cooperate with the second extension groove 211 of the second sliding groove 21 shown in FIG10, so that the rotating member 2 has two locking states spaced 180° apart in the circumferential direction.

[0055] Referring to Figures 12 and 13, in some embodiments, the cross-sectional outer contours of the first sliding groove 11 and the second sliding groove 21 can both be in the form of a first regular polygon, and the cross-sectional outer contour of the locking member 3 is in the form of a second regular polygon corresponding to the first regular polygon. The first and second regular polygons can be, for example, equilateral triangles, squares, regular pentagons, etc. In the figures, both the first and second regular polygons are squares, allowing the rotating member 2 to have four locking states in the circumferential direction, with a 90° interval between each pair of adjacent locking states. It can be understood that an equilateral triangle allows the rotating member 2 to have three locking states in the circumferential direction, and a regular pentagon allows the rotating member 2 to have five locking states in the circumferential direction.

[0056] Figures 14 to 16 show a vehicle, such as a child vehicle 200, whose support is, for example, equipped with the engaging device 100 provided in the above embodiments. The child vehicle 200 may be, for example, a double-seat stroller. Of course, the application of the engaging device 100 is not limited to child vehicles and double-seat strollers; it can be applied to any suitable field.

[0057] As shown in Figure 14, the double-seat stroller includes a bracket 81 with wheels at the bottom, a first frame 82 and a second frame 83 mounted on the bracket 81. The first frame 82 is positioned higher and provides a first seating position for one child, while the second frame 83 is positioned lower and provides a second seating position for another child. The seat 1 of the engaging device 100 is mounted on the bracket 81, and the second frame 83, as a supporting device, is detachably connected to the rotating component 2 of the engaging device 100. At this time, the rotating component 2 is locked in a locked state, and the second seating position can be used normally.

[0058] Referring to Figure 15, when only one child is riding, the second frame 83 can be removed from the support 81. If the position of the rotating member 2 is not changed, the rotating member 2 may collide with the child's legs. At this time, the rotating member 2 can be rotated to another locked state in the direction indicated by arrow R by operating the release member 5. Referring to Figure 16, when the rotating member 2 reaches another locked state, it corresponds to the retracted state of the rotating member 2, at which time the rotating member 2 is away from the child's legs.

[0059] When the second frame 83 of the aforementioned child carrier 200 is disassembled, the locking device 100 can be folded up, so that the locking device 100 does not protrude significantly from the child carrier 200. This not only reduces the risk of injury to children and ensures safety, but also reduces the overall packaging volume of the child carrier 200, thereby lowering transportation costs. The folded locking device 100 makes the child carrier 200 look simple and beautiful, contributing to its overall aesthetic appeal. In addition, by setting the locking member 3 and the elastic element 4, the locking device 100 can be well limited and locked in both the use and folded states, ensuring its stability during use and after folding. Furthermore, by operating the release member 5 to release and rotate the rotating member 2, the rotating member 2 can be easily switched between different locking states. The switching operation is simple and easy, providing a good user experience and improving user satisfaction. In addition, the first end of the release member 5 is located inside the child carrier 200, which can effectively prevent the second frame 83 from accidentally rotating during use due to accidental contact by a child.

[0060] The technical features of the above embodiments can be combined in any way. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The above-described embodiments are merely illustrative of several implementations of the present invention, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended patent application scope. [Simplified Explanation of the Diagram]

[0018] FIG1 schematically shows a perspective view of a locking device with a rotation limiting function according to an embodiment of the present invention;

[0019] Figure 2 schematically shows a first-direction exploded view of a locking device with a rotation limiting function according to an embodiment of the present invention;

[0020] Figure 3 schematically shows a second-direction exploded view of a locking device with a rotation limiting function according to an embodiment of the present invention;

[0021] Figure 4 schematically shows a perspective view of a seat in a locking device with a rotation limiting function according to an embodiment of the present invention;

[0022] FIG5 schematically shows a partial perspective view of a rotating component in a locking device with a rotation limiting function according to an embodiment of the present invention;

[0023] Figure 6 schematically shows a perspective view of a locking member in a locking device with a rotation limiting function according to an embodiment of the present invention;

[0024] FIG7 schematically shows a cross-sectional view of a locking device with a rotation limiting function according to an embodiment of the present invention, wherein the locking member is in a locked state;

[0025] FIG8 schematically shows a cross-sectional view of a locking device with a rotation limiting function according to an embodiment of the present invention, wherein the locking member is in an unlocked state;

[0026] Figure 9 schematically shows a front view of another type of seat and locking element in a locking device with rotation limiting function according to an embodiment of the present invention;

[0027] FIG10 schematically shows a front cross-sectional view of another rotating component in a locking device with a rotation limiting function according to an embodiment of the present invention;

[0028] FIG11 schematically shows a front view of another type of seat and locking member in a locking device with rotation limiting function according to an embodiment of the present invention;

[0029] Figure 12 schematically shows a front view of another type of seat and locking member in a locking device with rotation limiting function according to an embodiment of the present invention;

[0030] Figure 13 schematically shows a front view of another rotating component in a locking device with a rotation limiting function according to an embodiment of the present invention;

[0031] FIG14 schematically shows a perspective view of a child vehicle in one state according to an embodiment of the present invention;

[0032] FIG15 schematically shows a perspective view of another state of the child vehicle according to an embodiment of the present invention, wherein the rotating member is in a locked state;

[0033] FIG16 schematically shows a perspective view of another state of the child vehicle according to an embodiment of the present invention, wherein the rotating member is in another locked state.

Claims

1. A carrier, comprising: a support having, in an unfolded state, a first rod and a second rod extending in the same direction, the first rod being positioned above the second rod, the second rod being connected to a wheel; a rotating member pivotally connected to the second rod and having a first locking state and a second locking state in the circumferential direction, wherein when the rotating member is in the first locking state, the rotating member protrudes upward relative to the second rod, and when the rotating member is in the second locking state, the rotating member protrudes downward relative to the second rod; a first frame connected to the first rod for providing a first seating position; a second frame detachably connected to the rotating member for providing a second seating position; a fastener passing through the second rod, such that the rotating member is pivotally connected to the second rod via the fastener, the rotating member rotating about the axial direction of the fastener to rotate between the first locking state and the second locking state; when the second frame is connected to the rotating member, the rotating member is in the first locking state; when the second frame is separated from the rotating member, the rotating member is in the second locking state.

2. The vehicle according to claim 1, wherein, The bracket also includes a third rod connected to the first rod. In the unfolded state, the extension direction of the third rod intersects the extension directions of the first rod and the second rod. The third rod is connected to another wheel, and the size of the wheel connected to the second rod is smaller than the size of the other wheel connected to the third rod.

3. The vehicle according to claim 1, wherein, The bracket is equipped with a locking device having a rotation limiting function. The locking device includes: a base having a first sliding groove and mounted on the second rod; a rotating member pivotally connected to the base and having at least two locking states in the circumferential direction, with a predetermined angle between each two adjacent locking states, the at least two locking states including the first locking state and the second locking state; the rotating member having a second sliding groove; and a locking member having a locked state and an unlocked state; in the locked state, the rotating member is in one of the at least two locking states, and the locking member is simultaneously in the first sliding groove and the second sliding groove to restrict the rotation of the rotating member relative to the base; in the unlocked state, the locking member exits from the first sliding groove or the second sliding groove to allow the rotating member to rotate relative to the base, thereby allowing switching of the locking state of the rotating member; An elastic element operably connected to the locking member for holding the locking member in the locked state; and an unlocking member operably connected to the locking member for driving the locking member to move against the elastic force of the elastic element, thereby switching the locking member from the locked state to the unlocked state.

4. The vehicle according to claim 3, wherein, The cross-sectional outer contours of the first sliding groove and the second sliding groove are both in the form of a first regular polygon; the cross-sectional outer contour of the locking member is in the form of a second regular polygon corresponding to the first regular polygon.

5. The vehicle according to claim 3, wherein, The locking member includes a central portion and a protrusion projecting radially from the central portion; the first sliding groove has a first central groove and a first extension groove communicating with the first central groove; the second sliding groove has a second central groove and a second extension groove communicating with the second central groove; wherein the number of the protrusions is configured to be at least one, and the number of at least one of the first extension groove and the second extension groove is configured to be at least two; the central portion is used to slide with the first central groove and the second central groove, and the protrusion is used to slide with the first extension groove and the second extension groove.

6. The vehicle according to claim 5, wherein, The protrusions are configured in multiple portions, and the multiple protrusions are evenly spaced around the central portion; The number of the first extension groove and the number of the second extension groove are each configured to cooperate with the plurality of the protrusions.

7. The vehicle according to claim 5, wherein, The protrusion and the first extension groove are each configured as one, and the second extension groove is configured as two or more.

8. The vehicle according to any one of claims 3 to 7, wherein, The seat and the rotating member are pivotally connected via the fastener; the locking member is sleeved on the outside of the fastener, and the elastic element and the releasing member are respectively used to drive the locking member to move axially in the fastener so that the locking member switches between the locked state and the unlocked state.

9. The vehicle according to any one of claims 3 to 7, wherein, The locking element is located between the elastic element and the releasing element; the elastic element is accommodated in the first sliding groove or the second sliding groove, and the releasing element is attached to the rotating element or the seat.

10. The vehicle according to claim 8, wherein, The seat has a first sleeve portion located in the first sliding groove; the rotating member has a second sleeve portion located in the second sliding groove; the fastener is installed in the first sleeve portion and the second sleeve portion; the locking member is sleeved on the outside of the first sleeve portion and / or the second sleeve portion.

11. The vehicle according to claim 10, wherein, The opposing end faces of the first sleeve portion and the second sleeve portion are fitted together by a stepped structure.

12. The vehicle according to any one of claims 3 to 7, wherein, The release element is a button, the first end of the release element is adapted to be subjected to force, and the second end of the release element abuts against the locking element.

13. The vehicle according to claim 12, wherein, The rotating member has an inner side facing away from the seat, and the unlocking member is attached to the rotating member with its first end corresponding to the inner side of the rotating member.

14. The vehicle according to claim 1, wherein, The vehicle is a stroller, and the rotating component is a snap-fit ​​connector.

15. The vehicle according to claim 1, wherein the support is configured with a locking device having a rotation limiting function, the locking device comprising: A base is fitted onto the second rod, and the base and the rotating member are pivotally connected by the fastener.

16. The vehicle according to claim 1, wherein, The fastener is connected to the second rod through a second center hole in the rotating member, the second center hole being located at one end of the rotating member.

Images