Foldable child moving device

Abstract

The utility model provides a foldable child moving device which comprises a frame capable of being switched between a folded state and an unfolded state. The bearing part is pivotally mounted on the frame and can rotate relative to the frame; the locking piece can reciprocate between a locking position and an unlocking position on the frame along a preset guide; the lock releasing mechanism is rotatably arranged on the frame and is in transmission connection with the locking piece, the lock releasing mechanism comprises a lock frame assembly and a driving part, and when the frame is in an unfolded state, the locking piece is located at the locking position to lock the connecting rod structure of the frame; when the bearing part rotates in the folding direction, the locking frame assembly is pushed to be away from the frame, so that the unlocking mechanism can rotate relative to the frame, then the driving part transmits the driving force of the bearing part to the locking part, the locking part moves from the locking position to the unlocking position, and therefore the bearing part can be folded, or the frame can be folded, or the bearing part and the frame can be synchronously folded. The device has the advantages of compact structure, convenient operation and reliable synchronous folding.

Description

Technical Field

[0001] This utility model relates to the field of children's vehicle technology, and in particular to a foldable children's mobility device. Background Technology

[0002] Strollers are generally designed to unfold or fold, providing a comfortable ride for children when unfolded and easy to carry or store when folded. As a result, strollers have gradually become an essential item for adults taking children out. There are many types of strollers available, varying in the number of frame members and the connection positions between them, leading to differences in folding principles, folding methods, and the final folded effect. Currently, the mechanisms for simultaneous folding of the stroller frame and seat are relatively complex.

[0003] For example, Chinese patent document CN119568248A, published in March 2025, discloses a folding unlocking mechanism and a stroller frame. The folding unlocking mechanism includes a frame joint and a seat frame joint. The seat frame joint is detachably connected to the frame joint, and a linkage pressing block with a pressing bevel is provided on the rotating part of the seat frame joint. The rotating part and the fixed part of the frame joint are rotatably engaged, and both have locking holes at positions away from the center. In the locked state, a locking pin extends into the locking hole, and one end of the locking pin is fixedly connected to a lever. The engagement relationship between the pressing bevel and the lever is such that during the rotation of the seat frame joint, the pressing bevel presses the lever outward to force the locking pin away from the locking hole, thus unlocking the frame joint. The transmission structure of the aforementioned patent document is relatively complex.

[0004] Therefore, further improvements are needed. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a foldable child mobility device to overcome the shortcomings of the prior art. This child mobility device has a simple structure, reliable performance, and convenient operation.

[0006] A foldable child mobility device designed for this purpose is characterized by: comprising

[0007] The frame can switch between folded and unfolded states;

[0008] A load-bearing member, which is pivotally mounted on the vehicle frame and is rotatable relative to the vehicle frame;

[0009] A locking element that can reciprocate between a locked position and an unlocked position on the frame along a preset guide;

[0010] The release mechanism is rotatably mounted on the frame and driveably connected to the locking member. The release mechanism includes a locking frame assembly and a drive unit. When the frame is in the unfolded state, the locking member is in the locked position, locking the linkage structure of the frame. When the carrier rotates along the folding direction, it pushes the locking frame assembly away from the frame, thereby allowing the release mechanism to rotate relative to the frame. Then, the drive unit transmits the driving force of the carrier to the locking member, and the locking member moves from the locked position to the unlocked position, so as to realize the folding of the carrier, or the folding of the frame, or the folding of the carrier and the frame simultaneously.

[0011] The drive unit is provided with a first guide surface that cooperates with the locking member. When the drive unit rotates relative to the frame in a first direction, the first guide surface pushes the locking member to move along the path of the first guide surface.

[0012] The first guide surface is an arc-shaped curved surface or an inclined surface.

[0013] The locking member has a connecting part at one end, and the driving part forms a starting recess at one end of the first guide surface. When the frame is in the unfolded state, the connecting part is located on the starting recess.

[0014] The drive unit is provided with a sliding area and a pushing surface. The sliding area is provided with a second guide surface. When the drive unit rotates relative to the frame in a second direction, the connecting part contacts the second guide surface and the pushing surface, so that the connecting part moves back and forth on the locking member.

[0015] The second guide surface is an arc-shaped curved surface or an inclined surface;

[0016] The pushing surface and the end face of the connecting part are in point contact or surface contact. After the connecting part slides and contacts the pushing surface along the second guide surface, it is reset on the starting recess.

[0017] A first elastic structure is provided between the connecting part and the locking member. The connecting part is reset on the locking member through the first elastic structure. When the connecting part contacts the first guide surface, the second guide surface and the pushing surface, the connecting part compresses the first elastic structure. The connecting part is reset on the starting recess under the action of the first elastic structure.

[0018] The locking member is provided with a second elastic structure. When the connecting part contacts the first guide surface, the locking member moves toward the unlocking position of the frame and compresses the second elastic structure. When the connecting part is located on the sliding area, the pushing surface, or the starting recess, the locking member is reset to the locking position under the action of the second elastic structure.

[0019] The first guide surface and the sliding area are disposed back-to-back on the driving part; or, the sliding area is disposed in communication with the first guide surface.

[0020] The first guide surface, the starting recess, the sliding area, the second guide surface, and the pushing surface are located on the same side wall of the driving part, and the first guide surface, the starting recess, the sliding area, the second guide surface, the pushing surface, and the driving part are integrally formed structures or separate assembly structures.

[0021] The frame and the drive unit are pivotally connected by a guide protrusion, and the drive unit is provided with a guide slide that cooperates with the guide protrusion. When the drive unit rotates relative to the frame in a first direction or a second direction, the guide protrusion slides along the guide slide, thereby limiting the rotation angle of the drive unit.

[0022] The locking member has a guide hole in the middle area of ​​the other end, and a limiting rod is provided on the frame. The locking position and the unlocking position are respectively set on the guide hole. When the locking member moves in the vertical direction, the limiting rod contacts the locking position or the unlocking position in sequence.

[0023] The frame has a fixing hole at the pivot joint. The locking frame assembly is laterally displaceable on the drive unit and has one end extending out of the drive unit. When the carrier is folded and rotated, it pushes the locking frame assembly away from the fixing hole.

[0024] The locking frame assembly includes a locking rod, and a protrusion is provided on the circumferential side wall of the locking rod. The bearing member is provided with a pushing part that cooperates with the protrusion. During the folding process, the pushing part pushes the protrusion to drive the locking rod to move.

[0025] The pressing part is an arc-shaped curved surface or an inclined surface.

[0026] The foldable child mobility device of the above embodiments has the following advantages compared with the prior art:

[0027] By linking the locking frame assembly with the drive unit, the locking component is automatically triggered to move when the load-bearing component rotates, thus achieving synchronous folding of the load-bearing component and the frame. This solves the problems of cumbersome operation and asynchronous operation in the existing technology, and has the advantages of compact structure, convenient operation and reliable synchronous folding.

[0028] Users can trigger the unlocking mechanism by pushing the carrier component, eliminating the need to operate multiple unlocking components individually. The drive unit converts rotational motion into linear displacement of the locking component through sliding contact between the guide surface and the locking component connection, achieving rapid unlocking and linked folding.

[0029] The first guide surface and the sliding area are set in different positions or connected areas of the drive unit. Through the design of back-to-back or continuous trajectories, the functions of the unlocking path and the reset path are effectively separated or merged, making the overall structure compact and reasonably arranged.

[0030] A first elastic structure is provided between the connecting part and the locking part, which can automatically return to the starting recess after folding; a second elastic structure is provided on the locking part to realize automatic relocking, improving the convenience of use and the smoothness of operation; or, the connecting part does not have an elastic structure, and the sliding area is connected to the first guide surface, so the user can manually rotate the release mechanism to complete the reset operation; making the folding, unfolding, locking and resetting of the stroller simple and intuitive, without complicated operation or too much force, especially suitable for parents to complete the folding and storage operation with one hand or one step, greatly improving the convenience and comfort of actual use. Attached Figure Description

[0031] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of a child mobility device in one embodiment of the present invention.

[0034] Figure 2 This is an exploded structural diagram of the frame and load-bearing components in one embodiment of the present invention.

[0035] Figure 3 This is a cross-sectional view of the frame and drive unit mating structure in one embodiment of the present invention.

[0036] Figure 4 This is a perspective view of the vehicle frame and drive unit assembly structure in one embodiment of the present invention.

[0037] Figure 5 This is a schematic diagram of the structure in one embodiment of the present invention, showing the connecting part located in the starting recess.

[0038] Figure 6 This is a cross-sectional view of the connecting part located in the starting recess in one embodiment of the present invention.

[0039] Figure 7 This is a schematic diagram of the connection part and the first guide surface cooperating in one embodiment of the present invention.

[0040] Figure 8 This is a cross-sectional view of the connection part and the first guide surface in one embodiment of the present invention.

[0041] Figure 9 This is a schematic diagram of the drive unit structure in one embodiment of the present invention.

[0042] Figure 10 This is a schematic diagram of the drive unit in another direction in one embodiment of the present invention.

[0043] Figure 11 This is a schematic diagram of the cooperation structure between the guide protrusion and the guide slide in one embodiment of the present invention.

[0044] Figure 12 This is a schematic diagram showing the connecting part located in the sliding area in one embodiment of the present invention.

[0045] Figure 13 This is a schematic diagram showing the contact between the connecting part and the second guide surface in one embodiment of the present invention.

[0046] Figure 14 This is a schematic diagram showing the contact between the connecting part and the pushing surface in one embodiment of the present invention.

[0047] Figure 15 This is a schematic diagram of the locking member in the locked position in one embodiment of the present invention.

[0048] Figure 16 This is a schematic diagram of the cooperation structure between the pushing part and the pushing protrusion in one embodiment of the present invention. Detailed Implementation

[0049] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below. Example

[0050] like Figures 1-11 As shown, a foldable child mobility device is provided, including...

[0051] The frame 1 can switch between a folded state and an unfolded state;

[0052] The support member 2 is pivotally mounted on the frame 1 and can rotate relative to the frame 1.

[0053] The locking element 3 can reciprocate between a locked position and an unlocked position on the frame 1 along a preset guide;

[0054] The release mechanism 4 is rotatably mounted on the frame 1 and is connected to the locking member 3. The release mechanism 4 includes a locking frame assembly 41 and a drive unit 42. When the frame 1 is in the unfolded state, the locking member 3 is in the locked position to lock the linkage structure of the frame 1. When the carrier member 2 rotates in the folding direction, it pushes the locking frame assembly 41 away from the frame 1, so that the release mechanism 4 can rotate relative to the frame 1. Then, the drive unit 42 transmits the driving force of the carrier member 2 to the locking member 3, and the locking member 3 moves from the locked position to the unlocked position to realize the folding of the carrier member 2, or the folding of the frame, or the folding of the carrier member 2 and the frame 1 simultaneously.

[0055] Specifically, when the frame 1 is in the unfolded state, the pin in the locking frame assembly 41 is inserted into the fixing hole 13 of the frame 1, and the locking member 3 is in the locked position to lock the linkage structure of the frame 1. When the frame 1 needs to be folded, the user applies external force to make the carrier member 2 rotate around the pivot point. During the rotation of the carrier member 2, the pushing part 21 provided on its edge contacts the protrusion 412 of the locking frame assembly 41, pushing the locking frame assembly 41 to move laterally and disengage from the fixing hole 13. At this time, the unlocking mechanism 4 releases the lock on the frame 1, and the drive part 42 generates angular displacement as the carrier member 2 rotates. The first guide surface 421 of the drive part 42 contacts the connecting part 31 at the end of the locking member 3, so that the drive part 42 forces the locking member 3 to move along the guide direction through the curved or inclined structure during the rotation. When the locking member 3 is completely disengaged from the locked position, the constraints of each connecting part of the frame are released, and the folding action is completed under the action of gravity or external force.

[0056] It should be noted that the folding or unfolding state switching function of frame 1 is achieved by setting a rotatable connecting component, which can be a hinge structure or a pivot connection method, so that each link of the frame can fold.

[0057] The user manually or with the help of the push handle or support rod on the carrier 2 to make the carrier 2 start to rotate around the pivot point of the frame. During the folding process of the carrier 2, the rotation of the carrier 2 will push the lock frame assembly 41 away from the frame 1 through the release mechanism 4. At this time, the release mechanism 4 starts to work, pushing the locking member 3 from its locked position to the unlocked position. At this time, the connection between the carrier 2 and the frame 1 is released, and the carrier 2 can be folded smoothly.

[0058] When the user applies external force to rotate the frame 1, the drive unit 42 begins to rotate relative to the frame, causing the locking member 3 to unlock. The drive unit 42 pushes the locking member 3 through the first guide surface 421 to unlock it from the locked position. With the locking member 3 unlocked, the frame 1 can rotate freely and fold.

[0059] When the carrier 2 begins to rotate in the folding direction, it pushes the locking frame assembly 41 away from the frame 1, thereby causing the release mechanism 4 to begin unlocking the locking member 3. After the locking member 3 is unlocked, the connection between the frame 1 and the carrier 2 is released. During the rotation of the carrier 2, the drive unit 42 transmits the driving force generated during the rotation of the carrier 2 to the locking member 3. Through cooperation with the locking member 3, the drive unit 42 ensures that the locking member 3 moves smoothly from the locked position to the unlocked position. After the locking member 3 is unlocked, the carrier 2 and the frame 1 can be folded synchronously.

[0060] It should be pointed out that, as Figure 6 As shown, the locked position is a; Figure 8 As shown, the unlock position is b.

[0061] Furthermore, the carrier 2 can be a stroller seat or a sleeping box.

[0062] Furthermore, the drive unit 42 is provided with a first guide surface 421 that cooperates with the locking member 3. When the drive unit 42 rotates relative to the frame 1 in a first direction, the first guide surface 421 pushes the locking member 3 to move along the path of the first guide surface 421.

[0063] Specifically, when the carrier 2 begins to fold and rotate, the drive unit 42 rotates around the pivot under the driving force of the carrier 2. At this time, the first guide surface 421 contacts the end of the locking member 3. As the drive unit 42 rotates, the curved or inclined surface of the first guide surface 421 converts the contact pressure into a vertical component force, pushing the locking member 3 to slide downward along the guide structure on the frame 1, completing the unlocking action. When it is necessary to unfold the frame 1, the drive unit 42 rotates in the opposite direction, and the locking member 3 returns to its original position.

[0064] The first guide surface 421 is an arc-shaped curved surface or an inclined surface.

[0065] Specifically, the arc-shaped curved surface refers to an arc-shaped structure with a continuously curved surface. This curved surface can reduce frictional resistance through rolling contact, allowing the locking part 3 to move smoothly along the curved path.

[0066] An inclined plane refers to a planar structure that forms an angle with the horizontal direction. This inclined plane can convert the rotational motion of the drive unit 42 into the linear displacement of the locking member 3, thereby realizing the switching between the locked and unlocked states.

[0067] When the carrier 2 is folded and rotated, the drive part 42 rotates accordingly, and the first guide surface 421 contacts the connecting part 31 of the locking part 3. If the first guide surface 421 is an arc-shaped curved surface, the connecting part 31 slides along the curved surface, causing the locking part 3 to move from the locked position to the unlocked position; if the first guide surface 421 is an inclined slope, the connecting part 31 slides on the inclined surface, causing the locking part 3 to move down, thereby unlocking.

[0068] It should be noted that the first direction is either clockwise or counterclockwise rotation.

[0069] Furthermore, such as Figure 5 and Figure 6 As shown, the locking member 3 has a connecting part 31 on one end, and the driving part 42 forms a starting recess 422 at one end of the first guide surface 421. When the frame 1 is in the unfolded state, the connecting part 31 is located on the starting recess 422.

[0070] Specifically, the connecting part 31 refers to the protrusion or pin structure that extends from the end of the locking member 3 toward the unlocking mechanism 4. Specifically, it can be implemented by a cylindrical pin or a protrusion with an arc surface. The rotational motion of the driving part 42 is converted into the linear displacement of the locking member 3 through sliding contact. When the driving part 42 is driven to rotate by the folding action of the bearing member 2, the first guide surface 421 contacts the connecting part 31 and applies a lateral thrust, forcing the locking member 3 to move along the preset guide trajectory on the frame 1.

[0071] The initial recess 422 refers to the recessed structure provided on the edge of the side wall of the drive unit 42. Specifically, it can be implemented as an arc-shaped groove or a rectangular groove. Its depth and shape are designed according to the stroke requirements of the locking member 3. When the carrier member 2 rotates in the folding direction, the connecting part 31 disengages from the initial recess 422, and the pushing part 21 pushes the lock frame assembly 41 away from the frame 1, causing the entire release mechanism 4 to rotate. During the rotation of the drive unit 42 in the first direction, its first guide surface 421 remains in contact with the connecting part 31, forcing the locking member 3 to move downward along the limit rod 12 on the frame 1. When the locking member 3 is unlocked from the locked position, the connection of the frame 1 is released, and the user can continue to fold the carrier member 2 and the frame 1.

[0072] Furthermore, such as Figure 12 and Figure 13 As shown, the drive unit 42 is provided with a sliding area 423 and a pushing surface 424. The sliding area 423 is provided with a second guide surface 4231. When the drive unit 42 rotates relative to the frame 1 in a second direction, the connecting part 31 contacts the second guide surface 4231 and the pushing surface 424, so that the connecting part 31 moves back and forth on the locking member 3.

[0073] like Figure 9 As shown, the second guide surface 4231 is an arc-shaped curved surface or an inclined surface;

[0074] like Figure 14 and Figure 6 As shown, the pushing surface 424 and the end face of the connecting part 31 are in point contact or surface contact. After the connecting part 31 slides and contacts the pushing surface 424 along the second guide surface 4231, it is reset on the starting recess 422.

[0075] Specifically, when the drive unit 42 rotates in the second direction, the connecting part 31 contacts the second guide surface 4231, pushing the locking member 3 to move smoothly along a predetermined trajectory, and the connecting part 31 finally resets in the starting recess 422. The starting recess 422 is a recessed structure on the drive unit 42, and its function is to provide a stable reset point to ensure that the locking member 3 can be properly locked after folding or unfolding, maintaining the structural stability of the trolley.

[0076] It should be noted that the second direction is either clockwise or counterclockwise rotation.

[0077] Furthermore, a first elastic structure (not shown) is provided between the connecting part 31 and the locking member 3. The connecting part 31 is reset on the locking member 3 through the first elastic structure. When the connecting part 31 contacts the first guide surface 421, the second guide surface 4231 and the pushing surface 424, the connecting part 31 compresses the first elastic structure. The connecting part 31 is reset on the starting recess 422 under the action of the first elastic structure.

[0078] Specifically, when the drive unit 42 rotates, the connecting part 31 will contact the first guide surface 421, the second guide surface 4231 and the pushing surface 424. Through these contact surfaces, the connecting part 31 will be subjected to a certain lateral thrust, causing the locking member 3 to move along the preset path. The connecting part 31 will compress the first elastic structure, thereby providing the necessary elastic support for the subsequent unlocking action. Finally, the connecting part 31 will be reset to the starting recess 22, ensuring that the locking member 3 is accurately positioned after reset.

[0079] The locking member 3 is provided with a second elastic structure (not shown in the figure). When the connecting part 31 contacts the first guide surface 421, the locking member 3 moves toward the unlocking position of the frame 1 and compresses the second elastic structure. When the connecting part 31 is located on the sliding area 423, the pushing surface 424 or the starting recess 422, the locking member 3 is reset to the locking position under the action of the second elastic structure.

[0080] Specifically, when the connecting portion 31 is located in the sliding area 423, the pushing surface 424, or the starting recess 422, the second elastic structure begins to recover, causing the locking member 3 to reset from the unlocked position to the locked position. At this time, the function of the second elastic structure ensures that the locking member 3 stably returns to the locked position.

[0081] The synergistic effect of the first and second elastic structures ensures greater reliability of the trolley during unfolding and folding.

[0082] The first and second elastic structures can be compression springs or tension springs.

[0083] Furthermore, such as Figure 9 As shown, the first guide surface 421 and the sliding area 423 are arranged back to back on the drive unit 42.

[0084] Specifically, the first guide surface 421 and the sliding area 423 are disposed on opposite sides of the drive unit 42.

[0085] When rotating in the first direction, the first guide surface 421 contacts the connecting part 31 on the locking member 3 and applies a pushing force, driving the locking member 3 to achieve the unlocking action;

[0086] When rotating in the opposite or return direction, the connecting part 31 will slide to the sliding area 423 on the other side of the driving part and contact the second guide surface 423 or the pushing surface 424 thereon, completing the guiding and repositioning process of the locking member 3 on the reset path, so that the locking member 3 is reset to the locked position under the action of the second elastic structure.

[0087] Furthermore, such as Figure 9 As shown, the first guide surface 421, the starting recess 422, the sliding area 423, the second guide surface 4231, and the pushing surface 424 are located on the same side wall of the driving part 42, and the first guide surface 421, the starting recess 422, the sliding area 423, the second guide surface 4231, the pushing surface 424, and the driving part 42 are integrally formed structures or separate assembly structures.

[0088] Specifically, when the drive unit 42 rotates in the first direction, the first guide surface 421 on its side wall and the connecting part 31 of the locking member 3 always maintain sliding contact, forcing the locking member 3 to move in the vertical direction; when the drive unit 42 rotates in the second direction, the connecting part 31 slides along the second guide surface 4231 and the pushing surface 424 and then resets on the starting recess 422. At this time, the locking member 3 is restricted to the unlocked position; since the first guide surface 421, the starting recess 422, the sliding area 423, the second guide surface 4231 and the pushing surface 424 are located on the same side wall of the drive unit 42, the rotation angle of the drive unit 42 and the stroke of the locking member 3 form a precise correspondence, making the unlocking action more stable and reliable.

[0089] On the other hand, when the first guide surface 421, the starting recess 422, the sliding area 423, the second guide surface 4231, the pushing surface 424, and the driving part 42 are integrally molded, they are integrally molded through processes such as injection molding, which makes the overall strength stronger; when the first guide surface 421, the starting recess 422, the sliding area 423, the second guide surface 4231, the pushing surface 424, and the driving part 42 are assembled in separate parts, the driving part 42, the first guide surface 421, and the starting recess 422 are manufactured separately, and then the two are connected and fixed by means of riveting, welding or screw connection.

[0090] Furthermore, such as Figure 9 and Figure 11As shown, a guide protrusion 11 is provided at the pivot position between the frame 1 and the drive unit 42. The drive unit 42 is provided with a guide slide 426 that cooperates with the guide protrusion 11. When the drive unit 42 rotates relative to the frame 1 in a first direction or a second direction, the guide protrusion 11 slides along the guide slide 426, thereby limiting the rotation angle of the drive unit 42.

[0091] Specifically, the guide protrusion 11 is a protrusion structure located at the pivot of the frame 1. It can be implemented by using a cylindrical boss or a rectangular protrusion. Its function is to form a sliding fit with the guide slide 426 and restrict the movement trajectory of the drive unit 42 when it rotates. When the drive unit 42 is rotated around the pivot by an external force, the guide protrusion 11 is embedded in the guide slide 426 and slides along the inner wall of the guide slide 426. It should be noted that the curvature or tilt angle of the guide slide 426 can be designed according to the rotation range.

[0092] Furthermore, such as Figure 6 and Figure 8 As shown, a guide hole 32 is provided in the middle area of ​​the other end of the locking member 3, and a limit rod 12 is provided on the frame 1. The locking position and the unlocking position are respectively set on the guide hole 32. When the locking member 3 moves in the vertical direction, the limit rod 12 contacts the locking position or the unlocking position in sequence.

[0093] Specifically, the guide hole 32 is a through hole or groove in the middle of the locking member 3, which can be a round hole, an oblong hole, a waist-shaped hole, or an arc-shaped groove, used to limit the displacement of the limiting rod 12. The limiting rod 12 is fixed to the frame 1 and can be a cylindrical rod or a rod with a rectangular cross-section. When the locking member 3 is in the locked position, the limiting rod 12 abuts against the guide hole 32, and the vertical displacement of the locking member 3 is restricted, and the frame 1 and the carrier member 2 remain in the unfolded state; when folding is required, the locking member 3 is driven to move downward, the limiting rod 12 slides downward along the guide hole 32, and the folding constraint of the frame 1 and the carrier member 2 is released.

[0094] Furthermore, such as Figure 4 As shown, the frame 1 has a fixing hole 13 at the pivot joint, the lock frame assembly 41 is laterally displaceable on the drive part 42 and has one end extending out of the drive part 42. When the carrier 2 is folded and rotated, it pushes the lock frame assembly 41 away from the fixing hole 13.

[0095] The locking frame assembly 41 includes a locking rod 411, a protrusion 412 is provided on the circumferential side wall of the locking rod 411, and a pushing part 21 that cooperates with the protrusion 412 is provided on the bearing member 2. During the folding process, the pushing part 21 pushes the protrusion 412 to drive the locking rod 411 to move.

[0096] The pressing part 21 is an arc-shaped curved surface or an inclined surface.

[0097] Specifically, the fixing hole 13 is a positioning structure located at the pivot point of the frame 1. It can be implemented using a circular through hole or a blind hole. It provides a fixing fulcrum for the locking frame assembly 41 in the unfolded state, and the locking frame assembly can slide laterally along the drive part 42. When the frame 1 is unfolded, the locking frame assembly 41 extends into the fixing hole 13 to achieve locking. When the carrier 2 begins to fold and rotate, its pushing part 21 contacts the protrusion 412 of the locking frame assembly 41, pushing the locking frame assembly 41 to slide laterally along the drive part 42, so that the end of the locking frame assembly 41 gradually exits the fixing hole 13. At this time, the constraint between the locking frame assembly 41 and the frame 1 is released, and the drive part 42 can drive the frame 1 to fold synchronously.

[0098] When the carrier 2 begins to fold and rotate, the pressing part 21 contacts the protrusion 412 along the preset path. As the rotation angle increases, the curved or inclined surface of the pressing part 21 continuously applies a lateral pushing force to the protrusion 412, forcing the locking rod 411 to slide laterally along the drive part 42. When the protruding end of the locking rod 411 disengages from the fixing hole 13 on the frame 1, the locking constraint on the frame 1 is released, and the joint of the frame 1 can rotate freely, realizing the synchronous folding of the carrier 2 and the frame 1.

[0099] Furthermore, such as Figure 3 As shown, an elastic element is provided between the protrusion 412 and the driving part 42, and the contact protrusion 412 can be reset under the action of the elastic element.

[0100] Furthermore, such as Figure 1 and Figure 2 As shown, a trigger part 14 is provided on the frame 1, and a traction member is provided between the trigger part 14 and the joint of the frame 1.

[0101] Specifically, when the trigger 14 is actuated, the traction member pulls the joint of the frame 1 to achieve free rotation.

[0102] It should be noted that the traction components include ropes, steel cables, pull ropes, and chains.

[0103] Furthermore, such as Figure 2 As shown, the drive unit 42 is provided with a positioning seat 424, and the carrier 2 is provided with a support seat 22 corresponding to the positioning seat 424. The carrier 2 is installed on the positioning seat 424 through the support seat 22.

[0104] Furthermore, the positioning seat 424 is arranged to extend outward relative to the drive unit 42.

[0105] Furthermore, the pivot of the frame 1 is provided with a mounting groove that mates with the drive unit 42. The drive unit 42 is located on the mounting groove and is flush with the opening of the mounting groove.

[0106] Specifically, the drive unit 42 is flush with the opening of the mounting slot and does not protrude outward from the frame 1, which can reduce the lateral width of the whole vehicle, making the appearance simple and less prone to snagging.

[0107] Furthermore, such as Figure 3 As shown, a rotatable connection structure is provided between the pivot joint of the frame 1 and the drive unit 42. The drive unit 42 rotates at the pivot joint of the frame 1 through the rotatable connection structure. The rotatable connection structure includes a connecting shaft 15 provided on the mounting groove and a mounting port 425 provided on the drive unit 42. The connecting shaft 15 and the mounting port 425 are connected in cooperation.

[0108] Furthermore, the frame 1 is equipped with sliding wheels on both the front and rear sides.

[0109] Second embodiment:

[0110] This foldable child mobility device differs from the first embodiment in that:

[0111] The sliding area 423 is connected to the first guide surface 421.

[0112] The sliding area 423 on the drive unit 42 and the first guide surface 421 form a continuous guide rail structure. Unlike the first embodiment, in this example, since the connecting part 31 does not have a first elastic structure (i.e., no spring or other automatic return device), and the drive unit 42 does not have a second guide surface 4231 or a pushing surface 424, the movement of the connecting part 31 in the sliding area 423 lacks automatic reset capability. Therefore, when the user pushes the carrier 2 to rotate the drive unit 42, or when the user manually pushes the drive unit 42 to rotate, the connecting part 31 first enters the first guide surface 421 from the initial recess 422; as the drive unit 42 continues to rotate, the first guide surface... When 421 contacts the connecting part 31 of the locking member 3, the connecting part 31 slides along the curved surface, causing the locking member 3 to move from the locked position to the unlocked position, and the connecting part 31 slides into the sliding area 423. Since the connecting part 31 has no elastic structure to provide rebound force, the connecting part 31 will stay at the end of the sliding path. If a reset is required, the user must manually turn the unlocking mechanism 4 back to the initial position, so that the connecting part 31 slides back to the starting recess 422. This reset operation also ensures that the locking member 3 is back in the locked state before the next use.

[0113] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0114] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0115] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0116] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0117] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0118] It should also be understood that, in interpreting the connection or positional relationships of components, although not explicitly described, connection and positional relationships are interpreted to include a range of error, which should be within the acceptable deviation range of a specific value as determined by a person skilled in the art. For example, "approximately," "about," or "substantially" can mean within one or more standard deviations, without limitation herein.

[0119] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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.

[0120] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A foldable child mobility device, characterized in that: include The frame (1) is capable of switching between a folded state and an unfolded state; The support member (2) is pivotally mounted on the frame (1) and can rotate relative to the frame (1); The locking element (3) can reciprocate between a locked position and an unlocked position on the frame (1) along a preset guide; The release mechanism (4) is rotatably mounted on the frame (1) and connected to the locking member (3) in a transmission manner. The release mechanism (4) includes a lock frame assembly (41) and a drive unit (42). When the frame (1) is in the unfolded state, the locking member (3) is in the locked position to lock the linkage structure of the frame (1). When the carrier (2) rotates in the folding direction, it pushes the lock frame assembly (41) away from the frame (1), so that the release mechanism (4) can rotate relative to the frame (1). Then the drive unit (42) transmits the driving force of the carrier (2) to the locking member (3). The locking member (3) moves from the locked position to the unlocked position to realize the folding of the carrier (2), or the folding of the frame (1), or the folding of the carrier (2) and the frame (1) simultaneously.

2. The foldable child mobility device according to claim 1, characterized in that: The drive unit (42) is provided with a first guide surface (421) that cooperates with the locking member (3). When the drive unit (42) rotates relative to the frame (1) in a first direction, the first guide surface (421) pushes the locking member (3) to move along the path of the first guide surface (421). The first guide surface (421) is an arc-shaped curved surface or an inclined surface.

3. The foldable child mobility device according to claim 2, characterized in that: The locking member (3) has a connecting part (31) at one end, and the driving part (42) forms a starting recess (422) at one end of the first guide surface (421). When the frame (1) is in the unfolded state, the connecting part (31) is located on the starting recess (422).

4. The foldable child mobility device according to claim 3, characterized in that: The drive unit (42) is provided with a sliding area (423) and a pushing surface (424). The sliding area (423) is provided with a second guide surface (4231). When the drive unit (42) rotates relative to the frame (1) in a second direction, the connecting part (31) contacts the second guide surface (4231) and the pushing surface (424) so ​​that the connecting part (31) moves back and forth on the locking member (3). The second guide surface (4231) is an arc-shaped curved surface or an inclined surface; The pushing surface (424) and the end face of the connecting part (31) are in point contact or surface contact. After the connecting part (31) slides and contacts the pushing surface (424) along the second guide surface (4231), it is reset on the starting recess (422).

5. The foldable child mobility device according to claim 4, characterized in that: A first elastic structure is provided between the connecting part (31) and the locking member (3). The connecting part (31) is reset on the locking member (3) through the first elastic structure. When the connecting part (31) contacts the first guide surface (421), the second guide surface (4231) and the pushing surface (424), the connecting part (31) compresses the first elastic structure. The connecting part (31) is reset on the starting recess (422) under the action of the first elastic structure. The locking member (3) is provided with a second elastic structure. When the connecting part (31) contacts the first guide surface (421), the locking member (3) moves toward the unlocking position of the frame (1) and compresses the second elastic structure. When the connecting part (31) is located on the sliding area (423), the pushing surface (424) or the starting recess (422), the locking member (3) is reset to the locking position under the action of the second elastic structure.

6. The foldable child mobility device according to claim 4, characterized in that: The first guide surface (421) and the sliding area (423) are disposed back to back on the drive unit (42); or, the sliding area (423) is disposed in communication with the first guide surface (421).

7. The foldable child mobility device according to claim 4, characterized in that: The first guide surface (421), the starting recess (422), the sliding area (423), the second guide surface (4231), and the pushing surface (424) are located on the same side wall of the driving part (42), and the first guide surface (421), the starting recess (422), the sliding area (423), the second guide surface (4231), the pushing surface (424), and the driving part (42) are integrally formed structures or separate assembly structures.

8. The foldable child mobility device according to claim 1, characterized in that: The frame (1) is provided with a guide protrusion (11) at the pivot position of the drive unit (42). The drive unit (42) is provided with a guide slide (426) that cooperates with the guide protrusion (11). When the drive unit (42) rotates relative to the frame (1) in a first direction or a second direction, the guide protrusion (11) slides along the guide slide (426) to limit the rotation angle of the drive unit (42).

9. The foldable child mobility device according to claim 1, characterized in that: The locking member (3) has a guide hole (32) in the middle area of ​​the other end, and the frame (1) has a limiting rod (12). The locking position and the unlocking position are respectively set on the guide hole (32). When the locking member (3) moves in the vertical direction, the limiting rod (12) contacts the locking position or the unlocking position in sequence.

10. The foldable child mobility device according to claim 1, characterized in that: The frame (1) has a fixing hole (13) at the pivot point. The locking frame assembly (41) is laterally displaceable on the drive part (42) and has one end extending out of the drive part (42). When the carrier (2) is folded and rotated, it pushes the locking frame assembly (41) away from the fixing hole (13). The locking frame assembly (41) includes a locking rod (411), and a protrusion (412) is provided on the circumferential side wall of the locking rod (411). The bearing member (2) is provided with a pressing part (21) that cooperates with the protrusion (412). During the folding process, the pressing part (21) presses the protrusion (412) to drive the locking rod (411) to move. The pushing part (21) is an arc-shaped curved surface or an inclined surface.

Images