Folding holding mechanism

Abstract

The present application relates to a folding holding mechanism (20) configured to hold a frame (1) of a stroller in a folded state. The folding holding mechanism (20) is disposed on the frame (1) of the stroller. The folding holding mechanism (20) includes: a folding hook (22) convertible between a locked position and an unlocked position; and an engagement component (21) configured to be engaged with the folding hook (22). When the folding hook (22) is in the locked position, the folding hook (22) is engaged with the engagement component (21). When the folding hook (22) is in the unlocked position, the folding hook (22) is disengaged from the engagement component (21). The folding hook (22) is provided with a holding assembly (23) configured to hold the folding hook (22) in the unlocked position.

Description

Wonderland Switzerland AG, SteinhausenFOLDING HOLDING MECHANISMTECHNICAL FIELD

[0001] The present application relates to the technical field of children’s products, in particular to a folding holding mechanism for a frame of a stroller.BACKGROUND

[0002] Currently available strollers on the market are typically foldable, offering increased compactness of the stroller for easier storage and transportation. To prevent accidental unfolding of the folded stroller, a folding hook is provided on a frame of the stroller. Specifically, a part of the folding hook is disposed on a leg or a handlebar of the frame. Once the frame is folded, the folding hook is engaged with and fixed to a protrusion on the handlebar or the leg of the frame, preventing the accidental unfolding of the folded stroller. However, the unfolding of the frame is inconvenient when the frame is locked by such a folding hook.SUMMARY

[0003] In view of this, there is a need to provide an improved folding holding mechanism which can hold the folding hook in the unlocked position after the folding hook is unlocked, thereby freeing the user's hands and making the operation of unfolding the frame more convenient.

[0004] To achieve the above object, the embodiments of the present application provide a folding holding mechanism configured to hold a frame of a stroller in a folded state. The folding holding mechanism is disposed on the frame of the stroller. The folding holding mechanism includes: a folding hook convertible between a locked position and an unlocked position; and an engagement component configured to be engaged with the folding hook. When the folding hook is in the locked position, the folding hook is engaged with the engagement component. When the folding hook is in the unlocked position, the folding hook is disengaged from the engagement component. The folding hook isprovided with a holding assembly configured to hold the folding hook in the unlocked position. By providing the holding assembly to hold the folding hook in the unlocked position, the user does not need to hold the folding hook in the unlocked position with hand in order to unfold the frame, thereby simplifying the operation of unfolding the frame, making the operation of unfolding the frame more convenient, and improving the user's experience.

[0005] In an embodiment, the folding hook includes a fixed part fixedly disposed on the frame and a movable part movably connected to the fixed part. The movable part moves relative to the fixed part to convert the folding hook between the locked position and the unlocked position.

[0006] In an embodiment, the movable part is pivotably connected to the fixed part to pivot between the locked position and the unlocked position.

[0007] In an embodiment, the holding assembly includes a boss provided on one of the fixed part and the movable part and a first recess provided on the other one of the fixed part and the movable part. When the movable part pivots relative to the fixed part such that the boss is engaged with the first recess, the fixed part holds the movable part in the unlocked position.

[0008] In an embodiment, the movable part is provided with a first pushed part. The first pushed part is configured such that in a case where the movable part is in the locked position, as the frame converts from the unfolded state to the folded state, the engagement component pushes the first pushed part to cause the movable part to pivot away from the locked position.

[0009] In an embodiment, the movable part is provided with a second pushed part. The second pushed part is configured such that in a case where the movable part is in the unlocked position, as the frame converts from the unfolded state to the folded state, the engagement component pushes the second pushed part to cause the movable part to pivot to the locked position.

[0010] In an embodiment, the movable part has a first end away from the fixed part and a second end close to the fixed part. The movable part is provided with a first pushed part at the first end thereof. The first pushed part is configured such that in a case where the movable part is in the locked position, as the frame converts from the unfolded state to the folded state, the engagement component pushes the first pushed part to cause the movable part to pivot to the unlocked position. The movable part isprovided with a second pushed part at the second end thereof. The second pushed part is configured such that in a case where the movable part is in the unlocked position, as the frame converts from the unfolded state to the folded state, the engagement component pushes the second pushed part to cause the movable part to pivot to the locked position.

[0011] In an embodiment, the fixed part is provided with a limiting part. When the movable part pivots to the locked position, the limiting part abuts against the second pushed part.

[0012] In an embodiment, the holding assembly further includes a second recess spaced apart from the first recess. When the movable part pivots relative to the fixed part such that the boss is engaged with the second recess, the movable part is held in the locked position.

[0013] In an embodiment, the folding holding mechanism further includes a first resilient member disposed between the fixed part and the movable part. The first resilient member provides the movable part with a biasing force towards the locked position. The biasing force is smaller than a holding force provided by the holding assembly to hold the folding hook in the unlocked position.

[0014] In an embodiment, a bending radius of an inner side of the boss is greater than a bending radius of an outer side of the boss.

[0015] In an embodiment, the first recess is provided on the movable part, and the movable part is provided with a plurality of deformation grooves adjacent to the first recess.

[0016] In an embodiment, the movable part is slidably connected to the fixed part to slide between the locked position and the unlocked position.

[0017] In an embodiment, the fixed part is provided with a sliding rail. The movable part is provided with a sliding groove in cooperation with the sliding rail. The sliding groove is sleeved onto the sliding rail to slidably connect the movable part to the fixed part.

[0018] In an embodiment, a first end of the sliding rail is provided with a limiting protrusion adapted to abut against the movable part to prevent the detachment of the movable part from the sliding rail from the first end of the sliding rail.

[0019] In an embodiment, the sliding rail is provided with a first positioning recess and a second positioning recess. The sliding groove is provided with a positioning protrusion. When the movablepart slides such that the positioning protrusion is engaged with the first positioning recess, the movable part is in the locked position. When the movable part slides such that the positioning protrusion is engaged with the second positioning recess, the movable part is in the unlocked position.

[0020] In an embodiment, the sliding rail is provided with a second positioning recess. The sliding groove is provided with a positioning protrusion. When the movable part slides such that the positioning protrusion is engaged with the second positioning recess, the movable part is in the unlocked position. The folding holding mechanism further includes a second resilient member to bias the movable part in a direction away from the unlocked position.

[0021] In an embodiment, the fixed part is provided with a limiting groove extending along a sliding direction of the movable part. A side of the movable part facing the limiting groove is provided with a limiting tongue protruding into the limiting groove. An end of the limiting tongue facing a second end of the sliding rail opposite to the first end of the sliding rail is provided with an abutment face. The abutment face is adapted to abut against a side of the limiting groove close to the second end of the sliding rail to prevent the detachment of the movable part from the sliding rail from the second end of the sliding rail.

[0022] In an embodiment, an end of the limiting tongue facing the first end of the sliding rail is provided with an inclined face. When sleeving the sliding groove onto the sliding rail, the sliding groove is made to slide from the second end towards the first end of the sliding rail, the inclined face is pressed against the second end of the sliding rail, the limiting tongue is biased away from the sliding rail, and once the limiting tongue reaches the limiting groove, the limiting tongue protrudes into the limiting groove.

[0023] In an embodiment, the limiting groove is provided with a second resilient member therein. The second resilient member is disposed between the abutment face and the side of the limiting groove close to the second end of the sliding rail. The second resilient member biases the abutment face towards the locked position.BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The forgoing and additional objects, features, and advantages of the present applicationwill become apparent from the detailed description of the embodiments shown in the accompanying drawings. The same reference numerals throughout the accompanying drawings are used to denote the same components. The components in the accompanying drawings are not intentionally drawn in an actual scale, and the focus is instead on illustrating the principles of the present application.

[0025] Other features, objects and advantages of the present application will become more apparent after reading a detailed description of the non-limiting embodiments with reference to the following drawings.

[0026] FIG. la is a schematic perspective view of a frame of a stroller in the prior art that is in an unfolded state;

[0027] FIG. lb is a schematic perspective view of the frame of the stroller in the prior art that is in a folded state;

[0028] FIG. 2 is a schematic perspective view of a frame of a stroller according to an embodiment of the present application, in which the frame is in a folded state and a folding hook is in a locked position;

[0029] FIG. 3 is a partial enlarged view of part A in FIG. 2;

[0030] FIG. 4 is a sectional view taken along a line B-B in FIG. 3;

[0031] FIG. 5 is a schematic perspective view of the frame of the stroller according to an embodiment of the present application, in which the frame is in the folded state and the folding hook is in an unlocked position;

[0032] FIG. 6 is a partial enlarged view of part L in FIG. 5;

[0033] FIG. 7 is a sectional view taken along a line C-C in FIG. 6;

[0034] FIG. 8 is a schematic structural view of a movable part of the folding hook according to an embodiment of the present application;

[0035] FIG. 9 is a schematic structural view of a fixed part of the folding hook according to an embodiment of the present application;

[0036] FIG. 10 is a schematic perspective view of the frame of the stroller according to another embodiment of the present application, in which the frame is in the unfolded state and the foldinghook is in the locked position;

[0037] FIG. 11 is a schematic perspective view of the frame of the stroller according to another embodiment of the present application, in which the frame is in the unfolded state and the folding hook is in the unlocked position;

[0038] FIG. 12 is a sectional view taken along a line D-D in FIG. 10;

[0039] FIG. 13 is a sectional view taken along a line E-E in FIG. 11;

[0040] FIG. 14 is a partial enlarged view of part F in FIG. 12;

[0041] FIG. 15 is an exploded view of the folding hook according to another embodiment of the present application;

[0042] FIG. 16 is a schematic perspective view of the frame of the stroller according to yet another embodiment of the present application, in which the frame is in the unfolded state and the folding hook is in the locked position;

[0043] FIG. 17 is another schematic perspective view of the frame of the stroller according to yet another embodiment of the present application, in which the frame is in the unfolded state and the folding hook is in the locked position;

[0044] FIG. 18 is a schematic perspective view of the frame of the stroller according to yet another embodiment of the present application, in which the frame is in the folded state and the folding hook is in the locked position;

[0045] FIG. 19 is a schematic perspective view of the frame of the stroller according to yet another embodiment of the present application, in which the frame is in the folded state and the folding hook is in the unlocked position;

[0046] FIG. 20 is a perspective view of a folding holding mechanism according to yet another embodiment of the present application, in which the folding hook is in the locked position;

[0047] FIG. 21 is a perspective view of the folding holding mechanism according to yet another embodiment of the present application, in which the folding hook is in the unlocked position;

[0048] FIG. 22 is a view observed along a direction I in FIG. 20;

[0049] FIG. 23 is a sectional view taken along a line G-G in FIG. 20;

[0050] FIG. 24 is a view observed along a direction J in FIG. 21;

[0051] FIG. 25 is a sectional view taken along a line H-H in FIG. 21;

[0052] FIG. 26 is a schematic structural view of the movable part of the folding hook according to yet another embodiment of the present application;

[0053] FIG. 27 is a sectional view taken along a line K-K in FIG. 26;

[0054] FIG. 28 is a sectional view of the folding holding mechanism in the locked position according to still yet another embodiment of the present application from a same perspective as FIG. 22;

[0055] FIG. 29 is a sectional view of the folding holding mechanism in the locked position according to still yet another embodiment of the present application from a same perspective as FIG. 23;

[0056] FIG. 30 is a sectional view of the folding holding mechanism in the unlocked position according to still yet another embodiment of the present application from a same perspective as FIG. 24; and

[0057] FIG. 31 is a sectional view of the folding holding mechanism in the unlocked position according to still yet another embodiment of the present application from a same perspective as FIG. 25.

[0058] List of reference signs

[0059] 1 : frame, 10: handlebar, 11 : rear leg, 12: front leg, 20: folding holding mechanism, 21 : engagement component, 211 : engagement groove, 212: engagement protrusion, 2120: locking groove, 22: folding hook, 23: holding assembly,

[0060] 221 : movable part, 2211 : first pushed part, 2212: hook part, 2213: second pushed part,2214: pivot groove, 2215: boss, 2216: deformation groove, 2217: limiting tongue, 22171 : abutment face, 22172: inclined face,

[0061] 222: fixed part, 2221 : first limiting part, 2222: second limiting part, 2223 : connecting part,2224: pivot body, 2225: first recess, 2226: second recess, 2227: limiting groove, 2228: fixing base,

[0062] 223 : first resilient member,

[0063] 300: sliding groove, 310: limiting recess, 320: positioning protrusion,

[0064] 400: sliding rail, 410: limiting protrusion, 420: first positioning recess, 430: second positioning recess,

[0065] 500: second resilient member,

[0066] 9 : frame, 90: folding hook, 901 : hook part, 91 : engagement component, 92: handlebar, 93: front leg, 94: rear leg, 911 : engagement groove.DETAILED DESCRIPTION

[0067] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Preferred embodiments of the present application are given in the drawings. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the contents disclosed in the present application more fully understood.

[0068] It is to be noted that, when an element is referred to as being "connected" to another element, it can be directly connected to or integrated with the other element or intervening elements may be present. The terms "mount", "one end", "the other end" and similar expressions used herein are merely for illustrative purposes.

[0069] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as would commonly understood by a person skilled in the art to which the present application pertain. The terms used in the specification of the present application are for the purpose of describing specific embodiments only, and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0070] The inventor of the present application has found through research that when the user (e.g., the caregiver of the infant) needs to unfold a frame of a stroller, he / she must unlock a folding hook with one hand and manually hold the folding hook in the unlocked position while pivoting the leg or handlebar with the other hand to unfold the frame. In this case, it would be difficult to unfold theframe if the user's hands are occupied by other things such as holding a baby or other items, etc. or if the user's hand is injured.

[0071] Referring to FIG. 1 A and FIG. IB, FIG. 1 A and FIG. IB show a frame 9 of a stroller in the prior art, in which a seat part of the stroller and a cloth cover for wrapping the frame are omitted. The frame 9 includes a set of front legs 93, a set of rear legs 94 pivotably connected to the front legs 93, and a handlebar 92 pivotable relative to the front legs 93 or the rear legs 94. Through the pivoting movement between the front legs 93, the rear legs 94, and the handlebar 92, the frame 9 is convertible between an unfolded state and a folded state. In this embodiment, the rear leg 94 of the frame 9 is provided with a folding hook 90 made of an elastic material thereon, and one end of the folding hook 90 is provided with a hook part 901. The handlebar 92 of the frame 9 is further provided with an engagement component 91. The engagement component 91 is provided with an engagement groove 911. In other embodiments, the folding hook 90 may alternatively be disposed on the front leg 93 or the handlebar 92. When the frame 9 is in the folded state, the front leg 93 and the rear leg 94 located on the same side are located adjacent to each other, and the hook part 901 of the folding hook 90 is engaged with the engagement groove 911 of the engagement component 91, that is, the folding hook 90 is in the locked position to hold the frame 9 in the folded state. When the user needs to unfold the frame 9 from the folded state, he / she needs to apply a force to the folding hook 90 such that the folding hook 90 deforms in a direction away from the engagement component 91 to move the hook part 901 out of the engagement groove 911, thereby disengaging the folding hook 90 from the engagement component 91. Further, the user needs to continuously apply a force to the folding hook 90 to hold the folding hook 90 in the unlocked position so that the frame 9 can be unfolded. Since the process of unfolding the frame 9 requires continuous application of a force to the folding hook 90, one hand of the user tends to be occupied and the user has to unfold the frame 9 by the other hand, resulting in a difficult operation of the unfolding of the frame 9. Further, in the process of converting the frame 9 from the unfolded state to the folded state, the user also needs to apply a force to the folding hook 90 to convert the folding hook 90 to the unlocked position such that the folding hook 90 is allowed to be engaged with the engagement component 91. This operation may also bringinconvenience to the user.

[0072] Referring to FIG. 2 to FIG. 9, in an embodiment of the present application, a folding holding mechanism 20 is provided. FIG. 2 shows a schematic perspective view of a frame 1 of a stroller in a folded state, which is provided with a folding holding mechanism 20. The folding holding mechanism 20 is disposed on the frame 1 of the stroller. The frame 1 is convertible between a folded state and an unfolded state. Specifically, referring to FIG. 2 and FIG. 3, the folding holding mechanism 20 includes an engagement component 21 provided on a handlebar 10 of the frame 1 and a folding hook 22 provided on a rear leg 11 of the frame 1. In this embodiment, the engagement component 21 is a plastic sleeve which is sleeved outside of the handlebar 10. Optionally, the engagement component 21 may alternatively be a metal tube comprised in the handlebar 10. The folding hook 22 is convertible between a locked position and an unlocked position. When the frame 1 is in the folded state and the folding hook 22 is in the locked position, the folding hook 22 is engaged with the engagement component 21 to lock the frame 1 in the folded state. When the frame 1 is in the folded state and the folding hook 22 is in the unlocked position, the folding hook 22 is disengaged from the engagement component 21 to allow the frame 1 to convert to the unfolded state. It should be understood by those skilled in the art that the embodiment where the engagement component 21 is provided on the handlebar 10 of the frame 1 and the folding hook 22 is provided on the rear leg 11 of the frame 1 is merely an exemplary embodiment, and the engagement component 21 and the folding hook 22 may alternatively be provided at other appropriate positions of the frame 1 in other embodiments, as long as the following requirements can be met: when the frame 1 is in the folded state and the folding hook 22 is in the locked position, the folding hook 22 is engaged with the engagement component 21 to lock the frame 1 in the folded state; and when the frame 1 is in the folded state and the folding hook 22 is in the unlocked position, the folding hook 22 is disengaged from the engagement component 21 to allow the frame 1 to convert to the unfolded state. For example, the engagement component 21 may be provided on the rear leg 11 of the frame 1, and the folding hook 22 may be provided on the handlebar 10 of the frame 1. Optionally, the engagement component 21 is provided with an engagement groove 211, the folding hook 22 is provided with a hook part 2212,and when the hook part 2212 is engaged with the engagement groove 211, the folding hook 22 is in the locked position. It should be understood by those skilled in the art that the engagement groove 211 and the hook part 2212 are merely exemplary, and the engagement component 21 and the folding hook 22 may alternatively be provided with other appropriate engagement mechanisms, as long as requirements for engaging and locking the folding hook 22 with the engagement component 21 are met. For example, the engagement component 21 may be provided with a first hook part, the folding hook 22 may be provided with a second hook part, and the first hook part can be engaged and locked with the second hook part.

[0073] Referring to FIG. 4 and FIG. 6 together, the folding hook 22 includes a fixed part 222 fixedly disposed on the frame 1 and a movable part 221 movably connected to the fixed part 222. Optionally, the fixed part 222 is provided with a fixing base 2228, and the fixed part 222 is fixedly disposed on the frame 1 through cooperation between a connecting component (not shown) such as a bolt and the fixing base 2228. The movable part 221 moves relative to the fixed part 222 to convert between the locked position and the unlocked position. Specifically, in the embodiments shown in FIG. 2 to FIG. 9, the movable part 221 is pivotably connected to the fixed part 222, and the movable part 221 pivots relative to the fixed part 222 to convert between the locked position and the unlocked position. One end of the movable part 221 is provided with a pivot groove 2214 (as shown in FIG. 8), one end of the fixed part 222 is provided with a pivot body 2224 (as shown in FIG. 9), and the pivot body 2224 is pivotably connected into the pivot groove 2214, for example, through a pivot pin (not shown). As such, the movable part 221 is pivotable about the pivot pin relative to the fixed part 222. Optionally, the positions of the pivot groove 2214 and the pivot body 2224 may be interchangeable, that is, one end of the movable part 221 is provided with the pivot body 2224, and one end of the fixed part 222 is provided with the pivot groove 2214, which is not limited in the present application.

[0074] Referring to FIG. 8 and FIG. 9 together, in an embodiment, the pivot groove 2214 is provided with a boss 2215 therein, and the pivot body 2224 is provided with a first recess 2225 thereon. Optionally, the positions of the boss 2215 and the first recess 2225 may be interchangeable, that is, the pivot groove 2214 is provided with the first recess 2225 therein, and the pivot body 2224is provided with the boss 2215 thereon, which is not limited in the present application. When the movable part 221 pivots to the unlocked position, the boss 2215 is engaged with the first recess 2225 so that the movable part 221 is held in the unlocked position. Therefore, the boss 2215 and the first recess 2225 collectively form a holding assembly 23 which is at least used to hold the folding hook22 in the unlocked position. Optionally, the holding assembly 23 may further include a second recess 2226 which is provided along with the first recess 2225 on one of the pivot groove 2214 and the pivot body 2224. When the movable part 221 pivots to the locked position, the boss 2215 is engaged with the second recess 2226 so that the movable part 221 is held in the locked position. The provision of the holding assembly 23 enables the folding hook 22 to be held in the unlocked position, facilitating the user to fold or unfold the frame 1. Specifically, in the folding of the frame 1, the user only needs to convert the movable part 221 of the folding hook 22 to the unlocked position, and then the movable part 221 will be held in the unlocked position under the action of the holding assembly 23, allowing for converting the frame 1 to the folded state. For example, in the unfolding of the frame 1, the user only needs to convert the movable part 221 of the folding hook 22 to the unlocked position, and then the movable part 221 will be held in the unlocked position under the action of the holding assembly 23, allowing for converting the frame 1 to the unfolded state. The provision of the holding assembly23 for holding the holding hook 22 in the unlocked position avoids continuous application of a force by the user to the movable part 221 to hold the movable part 221 in the unlocked position. As a result, the user can use two hands simultaneously to fold or unfold the frame 1, simplifying the operation and improving the folding or unfolding efficiency.

[0075] Referring to FIG. 4 and FIG. 7 together, in an embodiment, the folding hook 22 is provided with a first limiting part 2221 and a second limiting part 2222. Optionally, the first limiting part 2221 may be provided at an end of the fixed part 222 close to the movable part 221 or at an end of the movable part 221 close to the fixed part 222. Specifically, the first limiting part 2221 is provided as a protruding part. When the movable part 221 pivots to the unlocked position (as shown in FIG. 7), the first limiting part 2221 abuts against the fixed part 222 or the movable part 221 to prohibit the movable part 221 from pivoting beyond the unlocked position. Optionally, the second limiting part2222 may be provided at the end of the fixed part 222 close to the movable part 221 or at the end of the movable part 221 close to the fixed part 222, and the second limiting part 2222 and the first limiting part 2221 are provided at opposite sides of one end of the fixed part 222 or at opposite sides of one end of the fixed part 222. Specifically, the second limiting part 2222 may also be provided as a protruding part. When the movable part 221 pivots to the locked position (as shown in FIG. 4), the second limiting part 2222 abuts against the fixed part 222 or the movable part 221 to prohibit the movable part 221 from pivoting beyond the locked position.

[0076] Still referring to FIG. 4 and FIG. 7, in an embodiment, an end of the fixed part 222 away from the movable part 221 is fixed to an inner side of the frame 1 such as the rear leg 11. In the present application, the term "inner side" refers to a side facing the frame 1 and the term "outer side" refers to a side facing away from the frame 1. Abending connecting part 2223 is provided between two ends of the fixed part 222. The connecting part 2223 is shaped such that a projection of the folding hook 22 onto the rear leg 11 is not exceed an outer side of the rear leg 11 regardless of whether the movable part 221 is in the locked position or the unlocked position, so that the folding hook 22 has a more compact structure.

[0077] Still referring to FIG. 4 and FIG. 7, in an embodiment, an end of the movable part 221 away from the fixed part 222 is provided with a first pushed part 2211, and the first pushed part 2211 is configured such that in a case where the movable part 221 is in the locked position, as the frame 1 converts from the unfolded state to the folded state, the engagement component 21 pushes the first pushed part 2211 to cause the movable part 221 to give way to the engagement component 21, thereby allowing the frame 1 to achieve the folded state. Specifically, the first pushed part 2211 is provided as an arched face or an inclined face. In a case where the movable part 221 is in the locked position, as the frame 1 converts from the unfolded state to the folded state, the engagement component 21 pushes the arched face or the inclined face to press the movable part 221. On the one hand, a force of the press is insufficient to overcome a holding force of the holding assembly 23 to remove the movable part 221 from the locked position. On the other hand, the force of the press causes the movable part 221 to deform in a direction away from the engagement component 21. As such, themovable part 221 gives way to the engagement component 21, and the hook part 2212 gradually enters and engages the engagement groove 211. Finally, the movable part 221 is in the locked position, and the folding hook 22 is engaged with the engagement component 21 to lock the frame 1 in the folded state. In other embodiments, the first pushed part 2211 is configured such that in a case where the movable part 221 is in the locked position, as the frame 1 converts from the unfolded state to the folded state, the engagement component 21 pushes the first pushed part 2211 to cause the movable part 221 to pivot away from the locked position and pivot to the unlocked position.

[0078] Optionally, in an embodiment, an end of the movable part 221 close to the fixed part 222 is provided with a second pushed part 2213. The second pushed part 2213 is configured such that in a case where the movable part 221 is in the unlocked position, when the frame 1 converts from the unfolded state to the folded state, the engagement component 21 pushes the second pushed part 2213 to cause the movable part 221 to pivot to the locked position, thereby locking the frame 1 in the folded state. Specifically, the second pushed part 2213 is provided as an arched face or an inclined face. In a case where the movable part 221 is in the unlocked position, as the frame 1 converts from the unfolded state to the folded state, the engagement component 21 pushes the arched face or the inclined face to cause the movable part 221 to pivot towards the locked position. As such, as the frame 1 gradually converts into the folded state, the movable part 221 gradually moves into the locked position, and the hook part 2212 gradually enters and engages the engagement groove 211. Finally, the movable part 221 is in the locked position, and the folding hook 22 is engaged with the engagement component 21 to lock the frame 1 in the folded state.

[0079] Optionally, referring to FIG. 8, a portion of the pivot groove 2214 adjacent to the boss 2215 is provided with a plurality of deformation grooves 2216. The deformation grooves 2216 are adapted to provide a flexible space for a structure near the boss 2215 to prevent fracture by fatigue of the structure near the boss 2215 caused by deformation generated in the engagement or disengagement of the boss 2215 with or from the first recess 2225 (and / or the second recess 2226). Preferably, two sides of the boss 2215 are each symmetrically provided with one deformation groove 2216.

[0080] FIG. 10 to FIG. 15 illustrate another embodiment of the present application, and the structure of the folding holding mechanism 20 according to this embodiment is substantially the same as that of the folding holding mechanism 20 according to the foregoing embodiments. Only distinguishing features are described below. Referring to FIG. 10 to FIG. 13 together, in this embodiment, the boss 2215 is provided on the pivot body 2224, and the first recess 2225 and the second recess 2226 are provided in the pivot groove 2214. Optionally, the first recess 2225 is provided as a through hole.

[0081] Referring to FIG. 14, a bending radius of an inner side of the boss 2215 is different from a bending radius of an outer side of the boss 2215. In the present application, the term "an inner side of the boss 2215" refers to a side of the boss 2215 facing the frame 1, for example, the left side of the boss 2215 in FIG. 14; and the term "an outer side of the boss 2215" refers to a side of the boss 2215 facing away from the frame 1, for example, the right side of the boss 2215 in FIG. 14. Optionally, the bending radius of the inner side of the boss 2215 is greater than the bending radius of the outer side of the boss 2215, that is a slope of the inner side of the boss 2215 is gentler than a slope of the outer side of the boss 2215. As such, a force required for the boss 2215 to engage with the first recess 2225 is smaller than a force required for the boss 2215 to disengage from the first recess 2225. That is, only a relatively small force is required to bring the movable part 221 into the unlocked position. Accordingly, a relatively large force is required to remove the movable part 221 from the unlocked position. This helps to hold the movable part 221 in the unlocked position to facilitate the unfolding or folding of the frame 1.

[0082] Optionally, referring to FIG. 15, in an embodiment, a first resilient member 223 is provided between the fixed part 222 and the movable part 221. The first resilient member 223 provides a force to bias the movable part 221 towards the locked position. Specifically, the first resilient member 223 is a torsion spring. The torsion spring applies a torque to the movable part 221 to allow the movable part 221 to have a movement tendency towards the locked position. The torque applied by the torsion spring is smaller than a holding force provided by the holding assembly 23 to hold the movable part 221 (i.e., the folding hook 22) in the unlocked position. That is, when themovable part 221 is in the unlocked position, the torque applied by the torsion spring is insufficient to remove the movable part 221 from the unlocked position. The provision of the torsion spring, on the one hand, reduces a force from the user required to convert the movable part 221 to the locked position to facilitate the operation, and on the other hand, prevents the accidental unlocking of the folding hook 22 when the frame 1 is in the folded state. Still referring to FIG. 15, in this embodiment, the deformation groove 2216 is disposed in a portion of the movable part 221 (the pivot groove 2214) adjacent to the first recess 2225. Preferably, two sides of the first recess 2225 are each symmetrically provided with one deformation groove 2216.

[0083] FIG. 16 to FIG. 27 show yet another embodiment of the present application. In this embodiment, referring to FIG. 17 to FIG. 21, the movable part 221 is slidably connected to the fixed part 222. The movable part 221 is slidable relative to the fixed part 222 to convert between the locked position and the unlocked position. Optionally, the engagement component 21 is provided with an engagement protrusion 212. When the frame 1 is in the folded state and the movable part 221 is in the locked position, the hook part 2212 of the movable part 221 is hooked with the engagement protrusion 212 provided on the engagement component 21 to lock the frame 1 in the folded state. In an embodiment, the engagement protrusion 212 is provided with a locking groove 2120, and at least a portion of the hook part 2212 can enter the locking groove 2120, so that the hook part 2212 can be more stably hooked with the engagement protrusion 212.

[0084] Referring to FIG. 22, in an embodiment, the fixed part 222 is provided with a sliding rail 400, the movable part 221 is provided with a sliding groove 300 in cooperation with the sliding rail 400, and the sliding groove 300 is sleeved onto the sliding rail 400 to slidably connect the movable part 221 to the fixed part 222. A first end of the sliding rail 400 is provided with a limiting protrusion 410, an end of the sliding groove 300 adjacent to the limiting protrusion 410 is provided with a limiting recess 310, and the limiting protrusion 410 is adapted to abut against the limiting recess 310 to prevent the detachment of the movable part 221 from the sliding rail 400 from the first end of the sliding rail 400. The sliding rail 400 is provided with a first positioning recess 420 and a second positioning recess 430, and the sliding groove 300 is provided with a positioning protrusion 320.When the movable part 221 slides to such an extent that the positioning protrusion 320 is engaged with the first positioning recess 420, the movable part 221 is in the locked position. When the movable part 221 slides to such an extent that the positioning protrusion 320 is engaged with the second positioning recess 430, the movable part 221 is in the unlocked position. Optionally, the first positioning recess 420 is positioned such that when the movable part 221 slides to such an extent that the positioning protrusion 320 is engaged with the first positioning recess 420 and the movable part 221 is in the locked position, the limiting recess 310 is not in contact with the limiting protrusion 410 or the limiting recess 310 just abuts against the limiting protrusion 410.

[0085] Referring to FIG. 23, in an embodiment, the sliding rail 400 is further provided with a limiting groove 2227 at a side thereof. The limiting groove 2227 extends along a sliding direction of the movable part 221. The sliding groove 300 is provided with a limiting tongue 2217 at a side thereof facing the limiting groove 2227. The limiting tongue 2217 protrudes into the limiting groove 2227. Specifically, an end of the limiting tongue 2217 facing a second end of the sliding rail 400 opposite to the first end of the sliding rail 400 is provided with an abutment face 22171. The abutment face 22171 is adapted to abut against a side of the limiting groove 2227 close to the second end of the sliding rail 400 to prevent the detachment of the movable part 221 from the sliding rail 400 from the second end of the sliding rail 400. Optionally, an end of the limiting tongue 2217 facing the first end of the sliding rail 400 is further provided with an inclined face 22172. When sleeving the sliding groove 300 onto the sliding rail 400, the sliding groove 300 is made to slide from the second end towards the first end of the sliding rail 400, the inclined face 22172 is pressed against the second end of the sliding rail 400, the limiting tongue 2217 is biased away from the sliding rail 400, and once the limiting tongue 2217 reaches the limiting groove 2227, the limiting tongue 2217 protrudes into the limiting groove 2227. In this embodiment, when sleeving the movable part 221 onto the fixed part 222, the sliding groove 300 is firstly sleeved onto the second end of the sliding rail 400. At this time, the second end of the sliding rail 400 will press against the inclined face 22172. Then the sliding groove 300 is made to slide towards the first end of the sliding rail 400, and the limiting tongue 2217 is biased away from the sliding rail 400 due to the pressing of the second end of the sliding rail 400.Once the limiting tongue 2217 reaches the limiting groove 2227, the limiting tongue 2217 protrudes into the limiting groove 2227, so that the operation of sleeving the movable part 221 onto the fixed part 222 is completed.

[0086] Optionally, the limiting groove 2227 is provided with a second resilient member 500. The second resilient member 500 is disposed between the abutment face 22171 and the side of the limiting groove 2227 close to the second end of the sliding rail 400. The second resilient member 500 provides the abutment face 22171 with a biasing force towards the locked position. Optionally, the second resilient member 500 is a pressure spring which applies a biasing force to the movable part 221 such that the movable part 221 has a movement tendency towards the locked position. The biasing force applied by the pressure spring is smaller than a holding force between the second positioning recess 430 and the positioning protrusion 320. As shown in FIG. 25, the movable part 221 is in the unlocked position. That is, the positioning protrusion 320 is engaged with the second positioning recess 430. In this case, the pressure spring has a maximum compression amount and a maximum biasing force. The maximum biasing force applied by the pressure spring is unable to cause the movable part 221 to be removed from the unlocked position, that is, unable to cause the positioning protrusion 320 to be disengaged from the second positioning recess 430. As shown in FIG. 23, the movable part 221 is in the locked position. That is, the positioning protrusion 320 is engaged with the first positioning recess 420. In this case, the pressure spring has a minimum compression amount and a minimum biasing force. The minimum biasing force applied by the pressure spring may help to hold the movable part 221 in the locked position. The provision of the pressure spring, on the one hand, reduces a force required to convert the movable part 221 to the locked position, facilitating the operation; and on the other hand, help to hold the folding hook 22 in the locked position to prevent accidental unlocking of the folding hook 22 when the frame 1 is in the folded state. In this embodiment, optionally, the first positioning recess 420 may not be provided, and the movable part 221 is held in the locked position through the biasing force provided by the second resilient member 500. This will be described in detail below with reference to FIG. 28 to FIG. 31.

[0087] FIG. 24 and FIG. 25 shows the movable part 221 in the unlocked position. Optionally, thesecond positioning recess 430 is positioned such that when the movable part 221 slides to such an extent that the positioning protrusion 320 is engaged with the second positioning recess 430 and the movable part 221 is in the unlocked position, the abutment face 22171 is not in contact with the side of the limiting groove 2227 close to the second end of the sliding rail 400, or the abutment face 22171 just abuts against the side of the limiting groove 2227 close to the second end of the sliding rail 400. In an embodiment where the second resilient member 500 is provided, the second positioning recess 430 is positioned such that when the movable part 221 slides to such an extent that the positioning protrusion 320 is engaged with the second positioning recess 430 and the movable part 221 is in the unlocked position, the second resilient member 500 has not yet achieved the maximum compression amount, or the second resilient member 500 has just achieved the maximum compression amount.

[0088] FIG. 29 to FIG. 31 illustrate the movable part 221 and the fixed part 222 of the folding holding mechanism 20 according to still yet another embodiment of the present application. In this embodiment, the sliding rail 400 is not provided with the first positioning recess 420 but is provided with only the second positioning recess 430. The sliding groove 300 is provided with the positioning protrusion 320. When the movable part 221 slides to such an extent that the positioning protrusion 320 is engaged with the second positioning recess 430, the movable part 221 is in the unlocked position. The second resilient member 500 is disposed between the abutment face 22171 and the side of the limiting groove 2227 close to the second end of the sliding rail 400 (referring to FIG. 29 and FIG. 31), and the second resilient member 500 provides the abutment face 22171 with a biasing force towards the locked position. Optionally, the second resilient member 500 is a pressure spring which applies a biasing force to the movable part 221 to cause the movable part 221 to have a movement tendency towards the locked position. The maximum biasing force applied by the pressure spring is smaller than the holding force between the second positioning recess 430 and the positioning protrusion 320. As shown in FIG. 31, the movable part 221 is in the unlocked position (the positioning protrusion 320 is engaged with the second positioning recess 430). In this case, the pressure spring has a maximum compression amount and a maximum biasing force. The maximum biasing force applied by the pressure spring is unable to cause the movable part 221 to be removed from theunlocked position, that is, is unable to cause the positioning protrusion 320 to be disengaged from the second positioning recess 430. As shown in FIG. 29, the movable part 221 is in the locked position. In this case, the pressure spring has a minimum compression amount and a minimum biasing force. The minimum biasing force applied by the pressure spring is sufficient to hold the movable part 221 in the locked position. The provision of the pressure spring, on the one hand, reduces a force by the user required to convert the movable part 221 to the locked position, facilitating the operation; and on the other hand, can hold the folding hook 2 in the locked position to prevent accidental unlocking of the folding hook 22 when the frame 1 is in the folded state.

[0089] The technical features in the above embodiments may be randomly combined. For concise description, not all possible combinations of the technical features in the above embodiments are described. However, all the combinations of the technical features are to be considered as falling within the scope described in this specification provided that they do not conflict with each other.

[0090] The above embodiments only describe several implementations of the present application, and their description is specific and detailed, but cannot therefore be understood as a limitation on the patent scope of the present application. It should be noted that those of ordinary skill in the art may further make variations and improvements without departing from the conception of the present application, and these all fall within the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

CLAIMS1. A folding holding mechanism, configured to hold a frame of a stroller in a folded state, the folding holding mechanism being disposed on the frame of the stroller, wherein the folding holding mechanism comprises: a folding hook convertible between a locked position and an unlocked position; and an engagement component configured to be engaged with the folding hook; wherein, when the folding hook is in the locked position, the folding hook is engaged with the engagement component, and when the folding hook is in the unlocked position, the folding hook is disengaged from the engagement component; and wherein the folding hook is provided with a holding assembly configured to hold the folding hook in the unlocked position.

2. The folding holding mechanism according to claim 1, wherein the folding hook comprises: a fixed part fixedly disposed on the frame; and a movable part movably connected to the fixed part; wherein the movable part moves relative to the fixed part to convert the folding hook between the locked position and the unlocked position.

3. The folding holding mechanism according to claim 2, wherein the movable part is pivotably connected to the fixed part to pivot between the locked position and the unlocked position.

4. The folding holding mechanism according to claim 3, wherein the holding assembly comprises: a boss provided on one of the fixed part and the movable part; and a first recess provided on the other one of the fixed part and the movable part; wherein, when the movable part pivots relative to the fixed part such that the boss is engaged withthe first recess, the fixed part holds the movable part in the unlocked position.

5. The folding holding mechanism according to claim 3 or 4, wherein the movable part is provided with a first pushed part, and the first pushed part is configured such that in a case where the movable part is in the locked position, as the frame converts from an unfolded state to the folded state, the engagement component pushes the first pushed part to cause the movable part to pivot away from the locked position.

6. The folding holding mechanism according to any one of the claims 3 to 5, wherein the movable part is provided with a second pushed part, and the second pushed part is configured such that in a case where the movable part is in the unlocked position, as the frame converts from an unfolded state to the folded state, the engagement component pushes the second pushed part to cause the movable part to pivot to the locked position.

7. The folding holding mechanism according to any one of the claims 3 to 6, wherein the movable part has a first end away from the fixed part and a second end close to the fixed part, the movable part is provided with a first pushed part at the first end thereof, and the first pushed part is configured such that in a case where the movable part is in the locked position, as the frame converts from an unfolded state to the folded state, the engagement component pushes the first pushed part to cause the movable part to pivot to the unlocked position, and the movable part is provided with a second pushed part at the second end thereof, and the second pushed part is configured such that in a case where the movable part is in the unlocked position, as the frame converts from the unfolded state to the folded state, the engagement component pushes the second pushed part to cause the movable part to pivot to the locked position.

8. The folding holding mechanism according to claim 6 or 7, wherein the fixed part is provided witha limiting part, wherein, when the movable part pivots to the locked position, the limiting part abuts against the second pushed part.

9. The folding holding mechanism according to claim 4, optionally in combination with any one of the claims 5 to 8, wherein the holding assembly further comprises a second recess spaced apart from the first recess, and when the movable part pivots relative to the fixed part such that the boss is engaged with the second recess, the movable part is held in the locked position.

10. The folding holding mechanism according to any one of the claims 2 to 9, further comprising: a first resilient member disposed between the fixed part and the movable part, wherein the first resilient member provides the movable part with a biasing force towards the locked position, and the biasing force is smaller than a holding force provided by the holding assembly to hold the folding hook in the unlocked position.

11. The folding holding mechanism according to claim 4, optionally in combination with any one of the claims 5 to 10, wherein a bending radius of an inner side of the boss is greater than a bending radius of an outer side of the boss.

12. The folding holding mechanism according to claim 4, optionally in combination with any one of the claims 5 to 11, wherein the first recess is provided on the movable part, and the movable part is provided with a plurality of deformation grooves adjacent to the first recess.

13. The folding holding mechanism according to any one of the claims 2 to 12, wherein the movable part is slidably connected to the fixed part to slide between the locked position and the unlocked position.

14. The folding holding mechanism according to any one of the claims 2 to 13, wherein the fixed part is provided with a sliding rail, the movable part is provided with a sliding groove in cooperation with the sliding rail, and the sliding groove is sleeved onto the sliding rail to slidably connect the movable part to the fixed part.

15. The folding holding mechanism according to claim 14, wherein a first end of the sliding rail is provided with a limiting protrusion, and the limiting protrusion is adapted to abut against the movable part to prevent the detachment of the movable part from the sliding rail from the first end of the sliding rail.

16. The folding holding mechanism according to claim 14 or 15, wherein the sliding rail is provided with a first positioning recess and a second positioning recess, and the sliding groove is provided with a positioning protrusion; wherein, when the movable part slides such that the positioning protrusion is engaged with the first positioning recess, the movable part is in the locked position; and wherein, when the movable part slides such that the positioning protrusion is engaged with the second positioning recess, the movable part is in the unlocked position.

17. The folding holding mechanism according to any one of the claims 14 to 16, wherein the sliding rail is provided with a second positioning recess, and the sliding groove is provided with a positioning protrusion; wherein, when the movable part slides such that the positioning protrusion is engaged with the second positioning recess, the movable part is in the unlocked position; and wherein the folding holding mechanism further comprises a second resilient member biasing the movable part in a direction away from the unlocked position.

18. The folding holding mechanism according to any one of claims 14 to 17, wherein the fixed part is provided with a limiting groove extending along a sliding direction of the movable part; a side of the movable part facing the limiting groove is provided with a limiting tongue protruding into the limiting groove; and an end of the limiting tongue facing a second end of the sliding rail opposite to the first end of the sliding rail is provided with an abutment face, and the abutment face is adapted to abut against a side of the limiting groove close to the second end of the sliding rail to prevent the detachment of the movable part from the sliding rail from the second end of the sliding rail.

19. The folding holding mechanism according to claim 18, wherein an end of the limiting tongue facing the first end of the sliding rail is provided with an inclined face; and wherein, when sleeving the sliding groove onto the sliding rail, the sliding groove is made to slide from the second end towards the first end of the sliding rail, the inclined face is pressed against the second end of the sliding rail, the limiting tongue is biased away from the sliding rail, and once the limiting tongue reaches the limiting groove, the limiting tongue protrudes into the limiting groove.

20. The folding holding mechanism according to claim 18 or 19, wherein the limiting groove is provided with a second resilient member therein, wherein the second resilient member is disposed between the abutment face and the side of the limiting groove close to the second end of the sliding rail, and the second resilient member biases the abutment face towards the locked position.

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