Folding device and baby carriage
By designing a pivot joint mechanism and locking components in the stroller, the stroller can be automatically folded, solving the problem of traditional strollers not folding tightly and improving ease of operation and portability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2026-03-10
AI Technical Summary
Traditional strollers often have connecting components that cannot be folded together with the frame during the folding process, resulting in a loose fold or requiring separate disassembly, which affects portability.
Design a folding device, including a pivot joint mechanism, a rotating seat and a locking component. The locking component switches between unfolded and folded states, drives the driven part to move, causes the rotating seat to rotate in one direction, and drives the connecting component to rotate to complete the folding.
It enables automated folding of strollers, improving ease of operation and compactness of folding, and simplifying the folding process.
Smart Images
Figure CN121626232A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of stroller technology, and in particular to a folding device and a stroller. BACKGROUND
[0002] A stroller is a tool vehicle designed for the convenience of outdoor activities for babies, and usually has a folding function to reduce the size of the stroller and improve portability. The traditional stroller is provided with a connecting component (such as a handrail, a tray, etc.) in front of the baby's seating position for the baby to hold. In the current folding process of the stroller, the connecting component may not be folded together with the frame, resulting in that the stroller is not compactly folded, or the user needs to separately disassemble and store the connecting component. SUMMARY
[0003] Therefore, it is necessary to provide a folding device and a stroller for solving the folding problem of the connecting component during folding of the stroller.
[0004] In one aspect, the present application provides a folding device, which comprises: a pivot joint mechanism having a driving member and being switchable between an unfolded state and a folded state; a rotating seat pivotally connected with the pivot joint mechanism and used for connecting with a connecting component, the rotating seat having a driven part; and a locking component movably connected with at least one of the pivot joint mechanism and the rotating seat, the locking component having a locked position for limiting mutual rotation of the rotating seat and the pivot joint mechanism and a released position for allowing mutual rotation of the rotating seat and the pivot joint mechanism; wherein when the pivot joint mechanism is switched from the unfolded state to the folded state, the pivot joint mechanism drives the locking component to move from the locked position to the released position, and when the locking component is located at the released position, the driving member drives the driven part to move, so that the rotating seat rotates relative to the pivot joint mechanism in a first rotating direction.
[0005] In one embodiment, the movement stroke of the driven part is greater than the movement stroke of the driving member.
[0006] In one embodiment, the pivot joint mechanism has a first limiting groove, and the driving member is slidable along the first limiting groove, the first limiting groove being used for limiting the movement stroke of the driving member.
[0007] In one embodiment, the side of the pivot joint mechanism facing the rotating seat has a second limiting groove, the driven part is accommodated in the second limiting groove and moves along the second limiting groove, and the length of the second limiting groove is greater than the length of the first limiting groove.
[0008] In one embodiment, both the driving member and the driven part are housed in the second limiting groove, and the first limiting groove is disposed on the wall surface of the second limiting groove.
[0009] In one embodiment, the driving member includes a first elastic element and a driving block, the driving block being located between the first elastic element and the driven portion; when the locking component is in the locked position, the driving block is connected to the driven portion, and the elastic force of the first elastic element provides the rotating seat with a tendency to rotate in the first rotation direction.
[0010] In one embodiment, the pivot joint mechanism has a first connecting seat and a second connecting seat pivotally connected to each other. The first connecting seat is pivotally connected to the rotating seat. The side of the first connecting seat facing the rotating seat is provided with a first limiting groove and a second limiting groove. The driving block can slide along the first limiting groove, which is used to limit the travel of the driving member. One end of the first elastic member is connected to one end of the second limiting groove, and the other end of the first elastic member is connected to the driving block. The first elastic member, the driving block, and the driven part are all located in the second limiting groove.
[0011] In one embodiment, the first limiting groove is disposed on the wall surface of the second limiting groove; and / or, both the first limiting groove and the second limiting groove are arc-shaped.
[0012] In one embodiment, the pivot joint mechanism has a first connecting seat and a second connecting seat pivotally connected to each other, and the rotating seat is connected to the first connecting seat; the locking component is located between the first connecting seat and the rotating seat, and during the process of the pivot joint mechanism switching from the unfolded state to the folded state, the pivot joint mechanism drives the locking component to move from the locked position to the unlocked position.
[0013] In one embodiment, the locking component has a locking member and a moving member. During the process of the pivot joint mechanism switching from the unfolded state to the folded state, the pivot joint mechanism drives the moving member to move, so that the moving member drives the locking member to move from the locked position to the unlocked position.
[0014] In one embodiment, the first connecting seat has a first locking groove, and the rotating seat has a second locking groove. When the locking member is in the locked position, a portion of the locking member is located in the first locking groove, and at least another portion of the locking member is located in the second locking groove. When the locking member is in the unlocked position, the locking member is located in either the first locking groove or the second locking groove.
[0015] In one embodiment, the movable member is located in the first locking groove and abuts against the second connecting seat. During the process of the pivot joint mechanism switching from the unfolded state to the folded state, the second connecting seat pushes the movable member to move toward the direction close to the rotating seat, and the movable member drives the locking member to disengage from the first locking groove and move to the second locking groove.
[0016] In one embodiment, the first connecting seat has a through hole, and the movable member has an extension that engages with the through hole and extends toward the second connecting seat. The extension has a first inclined surface at one end near the second connecting seat, and the second connecting seat has a second inclined surface on the side facing the rotating seat. During the process of the pivot joint mechanism switching from the unfolded state to the folded state, the second connecting seat pushes the movable member toward the direction closer to the rotating seat by engaging with the first inclined surface through the second inclined surface.
[0017] In one embodiment, one of the inner wall of the first locking groove and the moving member has a limiting rib, and the other of the inner wall of the first locking groove and the moving member has a recess, wherein the limiting rib and the recess slide in each other.
[0018] The aforementioned folding device, by adding a locking component with a locking position and an unlocking position, allows the locking component to move from the locked position to the unlocking position when the pivot joint mechanism switches from the unfolded state to the folded state. This allows the driving member to drive the driven part to move, causing the rotating seat to rotate unidirectionally relative to the pivot joint mechanism in the first rotation direction. In other words, when the pivot joint mechanism switches from the unfolded state to the folded state, it can drive the rotating seat to rotate unidirectionally, which in turn drives the connecting component to rotate, completing further folding. Therefore, the folding device described in this application has a simple overall structure, can automatically complete further folding actions, and improves operational convenience.
[0019] On the other hand, this application also provides a stroller, the stroller comprising: a pivot joint mechanism disposed on a foldable frame and switchable between an unfolded state and a folded state; a rotating seat pivotally connected to the pivot joint mechanism; a connecting assembly connected to the rotating seat, at least a portion of the connecting assembly forming a first plane; and a frame locking mechanism connected to the frame; wherein the frame locking mechanism has an operating member, which, when subjected to force in a first direction, drives the pivot joint mechanism to switch from the unfolded state to the folded state, and during at least one stage of the switching process, the pivot joint mechanism drives the connecting assembly to rotate relative to the pivot joint mechanism in a first rotational direction, such that the angle between the first plane and the first direction gradually increases.
[0020] In one embodiment, the process of the connecting component rotating in the first rotation direction includes a first stage and a second stage. In the first stage, the connecting component is driven by the driving member to rotate in the first rotation direction. In the second stage, the connecting component continues to rotate in the first rotation direction under the action of an external force.
[0021] In one embodiment, when the pivot joint mechanism is in the deployed state, the height of the operating member is lower than the height of the rotating base.
[0022] When the stroller is folded, the connecting component can be driven to rotate unidirectionally in the first rotation direction to avoid collision with the user's hand. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the structure of a stroller in an embodiment of this application when its pivot joint mechanism is in the unfolded state.
[0024] Figure 2 This is a schematic diagram of the structure of a stroller in an embodiment of this application when its pivot joint mechanism is in a folded state.
[0025] Figure 3 This is an exploded view of the folding device in one embodiment of this application.
[0026] Figure 4 This is a schematic diagram of the structure of the first connecting seat of the folding device in one embodiment of this application.
[0027] Figure 5 This is a schematic diagram of the rotating base of the folding device in one embodiment of this application.
[0028] Figure 6 This is a schematic diagram of the structure of the moving part of the folding device in one embodiment of this application.
[0029] Figure 7 This is a schematic diagram of the structure of the second connecting seat of the folding device in one embodiment of this application.
[0030] Figure 8 This is a radial cross-sectional view of the folding device in one embodiment of this application. The cut is located at the first connecting seat, and the folding device is in the unfolded state at this time.
[0031] Figure 9 This is a radial cross-sectional view of the folding device in one embodiment of this application. The cut-off position is located at the first connecting seat, and the folding device is in a folded state at this time.
[0032] Explanation of icon numbers:
[0033] 10. Stroller; 11. Front leg frame; 12. Rear leg frame; 13. Handlebar frame; 14. Pivot joint mechanism; 15. Connecting assembly; 16. Frame locking mechanism; 161. Operating element; 1610. Lifting part; 162. Locking joint; 17. Seat post; 171. First hinge; 172. Second hinge; 100. Folding device; 110. First connecting seat; 111. Driving element; 1111. First elastic element; 1112. Driving block; 112. First seat body; 1121. Main body wall; 1122. First locking groove; 1123. Second limiting groove; 1124. First protrusion; 1125. Second... 1126. Third protruding ridge; 1127. First limiting groove; 1128. Through hole; 1129. Fourth protruding ridge; 113. First connecting arm; 114. Third seat; 115. Limiting rib; 120. Rotating seat; 121. Driven part; 122. Second locking groove; 130. Second connecting seat; 131. Second seat; 1311. Second inclined surface; 132. Second connecting arm; 140. Pivot shaft; 141. Second elastic element; 150. Locking assembly; 151. Moving part; 1511. Recess; 1512. Extension; 15120. First inclined surface; 152. Locking element; 160. Pin. Detailed Implementation
[0034] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not 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 application.
[0035] In this application, unless otherwise expressly 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 expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0036] refer to Figures 1 to 9This application provides a folding device 100, which includes a pivot joint mechanism 14, a rotating seat 120, and a locking assembly 150. The pivot joint mechanism 14 is provided with a drive member 111 and has an unfolded state and a folded state, which can be switched between the two states. The rotating seat 120 is pivotally connected to the pivot joint mechanism 14 and is provided with a driven portion 121. The locking assembly 150 is movably connected to at least one of the pivot joint mechanism 14 and the rotating seat 120, and has a locked position and an unlocked position. When the locking assembly 150 is in the locked position, the locking assembly 150 can restrict the relative rotation of the rotating seat 120 and the pivot joint mechanism 14. When the locking assembly 150 is in the unlocked position, the locking assembly 150 allows the rotating seat 120 and the pivot joint mechanism 14 to rotate relative to each other. When the pivot joint mechanism 14 switches from the unfolded state to the folded state, the pivot joint mechanism 14 drives the locking component 150 to move from the locked position to the unlocked position. When the locking component 150 is in the unlocked position, the driving member 111 drives the driven part 121 to move, so that the rotating seat 120 rotates relative to the pivot joint mechanism 14 in the first rotation direction.
[0037] The folding device 100 provided in this application, by adding a locking component 150 with a locked position and an unlocked position, allows the locking component 150 to move from the locked position to the unlocked position when the pivot joint mechanism 14 switches from the unfolded state to the folded state. This allows the driving member 111 to drive the driven part 121 to move, causing the rotating seat 120 to rotate unidirectionally relative to the pivot joint mechanism 14 in a first rotation direction. In other words, when the pivot joint mechanism 14 switches from the unfolded state to the folded state, it can drive the rotating seat 120 to rotate unidirectionally, completing further folding. Therefore, the folding device 100 described in this application has a simple overall structure, can automatically complete further folding actions, and improves operational convenience.
[0038] refer to Figure 8 and Figure 9 In the following embodiments, the first rotation direction is defined as Figure 8 and Figure 9 The first rotation direction is clockwise. Of course, in other embodiments, the first rotation direction can also be counterclockwise.
[0039] In this embodiment, reference Figure 3Specifically, the pivot joint mechanism 14 includes a first connecting seat 110 and a second connecting seat 130. The first connecting seat 110 and the second connecting seat 130 are pivotally connected. When the first connecting seat 110 and the second connecting seat 130 rotate relative to each other, the pivot joint mechanism 14 can switch between an unfolded state and a folded state. The first connecting seat 110, the second connecting seat 130, and the rotating seat 120 are coaxially arranged, and all three are provided with through holes (not shown in the figure). A pivot shaft 140 passes through the through hole, so that any one of the first connecting seat 110, the second connecting seat 130, and the rotating seat 120 can pivot relative to the other two.
[0040] refer to Figure 3 and Figure 4 The first connecting seat 110 can be approximated as including a disk-shaped first seat body 112 and a first connecting arm 113 connected to the outer peripheral surface of the first seat body 112. In the length direction of the pivot shaft 140, that is, in the thickness direction of the first seat body 112, one end of the first seat body 112 forms a circular opening, and the other end is the main body wall 1121 of the first seat body 112.
[0041] Similar to the first connecting seat 110, the second connecting seat 130 can also be approximated as including a disc-shaped second seat body 131 and a second connecting arm 132 connected to the outer peripheral surface of the second seat body 131. The second seat body 131 is located at the end of the first seat body 112 opposite to the rotating seat 120, that is, at the end where the main body wall 1121 of the first seat body 112 is located. In this embodiment, the first connecting seat 110 also includes a third seat body 114, which is spaced apart from the first seat body 112 and forms a slot, in which the second seat body 131 is embedded.
[0042] refer to Figure 3 and Figure 5 The rotating seat 120 is approximately disc-shaped and covers the circular opening of the first seat 112, that is, the side of the first seat 112 opposite to the third seat 114. The driven part 121 is provided on the side of the rotating seat 120 opposite to the third seat 114, and the driven part 121 protrudes from the surface of the rotating seat 120 opposite to the second connecting seat 130 and extends into the first seat 112.
[0043] For ease of understanding, the following description uses the application of this folding device 100 as an example. Figure 1 and Figure 2The following describes the stroller 10 shown. Specifically, the stroller 10 has a front stand 11, two rear stands 12, a handlebar 13, and a connecting assembly 15. Two folding devices 100 are symmetrically arranged on both sides of the stroller 10. The front stand 11 is U-shaped, with each end fixedly connected to one of the second connecting arms 132. The handlebar 13 is also U-shaped, with each end fixedly connected to one of the first connecting arms 113. Both rear stands 12 are hinged to the handlebar 13. The connecting assembly 15 is U-shaped, with each end fixedly connected to a rotating seat 120. The front stand 11 is connected to two wheels, and each of the two rear stands 12 is connected to one wheel. When the stroller 10 is folded using the folding device 100, the first connecting seat 110 and the second connecting seat 120 rotate relative to each other, causing the angle between the front stand 11 and the handlebar 13 to decrease, thus folding the stroller 10. During the folding process, the drive unit 111 drives the rotating seat 120 to rotate through the driven part 121, and the connecting assembly 15 rotates with the rotating seat 120 to automatically complete the folding.
[0044] by Figure 8 Taking the stroller frame 10 shown as an example, it can be understood that at this time, the folding device 100 is in the unfolded state, and the front stand 11 and the handlebars 13 are approximately aligned in a straight line. Figure 2 and Figure 9 Taking the stroller frame 10 shown as an example, at this time, the folding device 100 is in the folded state, the front leg frame 11 and the handle frame 13 are set at an angle α, which is an acute angle, and the opening faces downward.
[0045] refer to Figure 3 , Figure 8 and Figure 9 A locking component 150 is disposed between the first seat 112 and the rotating seat 120. In an exemplary embodiment, the locking component 150 has a locked position and an unlocked position. When the first connecting seat 110 and the second connecting seat 130 rotate relative to each other, the locking component 150 can be moved and switch between the locked position and the unlocked position. During the process of the pivot joint mechanism 14 switching from the unfolded state to the folded state, the locking component 150 moves from the locked position to the unlocked position, so that the driving member 111 can drive the driven part 121 to move, thereby allowing the rotating seat 120 to rotate relative to the first connecting seat 110 in a first rotation direction. In this way, the process of the pivot joint mechanism 14 switching from the unfolded state to the folded state can automatically trigger the rotation of the rotating seat 120 relative to the first connecting seat 110 in the first rotation direction, improving the folding efficiency.
[0046] Furthermore, the locking component 150 includes a movable member 151 and a locking member 152. In this embodiment, the locking member 152 is approximately elongated, while the movable member 151 is approximately circular. The movable member 151 is connected to the locking member 152. During the process of the pivot joint mechanism 14 switching from the unfolded state to the folded state, the movable member 151 is driven by the pivot joint mechanism 14 to move the locking member 152 from the locked position to the unlocked position. Of course, in other embodiments, the movable member 151 and the locking member 152 may also have other shapes, such as cylindrical, polygonal, etc., which are not limited in this application.
[0047] Furthermore, the first connecting seat 110 is provided with a first locking groove 1122, and the rotating seat 120 is provided with a second locking groove 122. (See reference) Figure 4 and Figure 8 For example, the first connecting seat 110 is provided with a plurality of protruding ridges, which protrude from the main body wall 1121 of the first seat 112 toward the rotating seat 120. Specifically, the first connecting seat 110 is provided with a first protruding ridge 1124 in the shape of a closed annulus and a second protruding ridge 1125 in the shape of an arc, the diameter of the second protruding ridge 1125 being larger than that of the first protruding ridge 1124. More specifically, the first locking groove 1122 is located in the area enclosed by the first protruding ridge 1124, and part of the first locking groove 1122 is adapted to the shape of the locking member 152, so that both ends of the locking member 152 in the length direction can be embedded in the first locking groove 1122. Reference Figure 5 The second locking groove 122 is formed on the side of the rotating seat 120 opposite to the first connecting seat 110, and the second locking groove 122 is also adapted to the shape of the locking member 152, so that the locking member 152 can also be embedded in the second locking groove 122.
[0048] In this embodiment, the locked position refers to the position of the locking assembly 150 when at least a portion of the locking member 152 is located within the first locking groove 1122. It can be understood that when the pivot joint mechanism 14 is in the deployed state, the locking member 152 is in the locked position. At this time, because a portion of the locking member 152 is located within the first locking groove 1122, and another portion of the locking member 152 is located within the second locking groove 122, the rotating seat 120 cannot rotate relative to the first connecting seat 110.
[0049] In this embodiment, the unlocking position refers to the position of the locking component 150 when the locking member 152 moves from the locking position toward the rotating seat 120 until it completely leaves the first locking groove 1122 and enters the second locking groove 122. It can be understood that when the pivot joint mechanism 14 is in the folded state, the locking member 152 is in the unlocking position. At this time, since the locking member 152 is located in the second locking groove 122, the locking member 152 can rotate with the rotating seat 120 relative to the first connecting seat 110.
[0050] It should be noted that during the process of switching the folding device 100 from the unfolded state to the folded state, the locking member 152 needs to move a certain distance before it can fully enter the second locking groove 122. Therefore, during this movement of the locking member 152, the locking member 152 can be regarded as being in the locked position.
[0051] It should also be noted that in some other embodiments of this application, the locking member 152 may also move away from the rotating seat 120 until it completely leaves the second locking groove 122 and enters the first locking groove 1122. Therefore, in these embodiments, when the locking member 152 completely leaves the second locking groove 122 and enters the first locking groove 1122, the locking member 152 is in the unlocked position.
[0052] In some embodiments, the movable member 151 is located within the first locking groove 1122 and abuts against the second connecting seat 130. (See reference) Figure 3 , Figure 4 ,as well as Figures 7 to 9 The locking member 152 is connected to the moving member 151. This connection can be achieved by bonding, welding, abutting, or other methods, which are not limited in this application. Specifically, the main body wall 1121 of the first seat 112 is provided with a through hole 1128, and the moving member 151 is provided with an extension 1512. When the folding device 100 is in the locked position, the extension 1512 passes through the through hole 1128 and abuts against the second seat 131. When the pivot joint mechanism 14 switches from the unfolded state to the folded state, the second seat 131 rotates relative to the first seat 112 in the first rotation direction. The moving member 151 is pushed by the second seat 131 and moves in the axial direction parallel to the pivot shaft 140, gradually approaching the rotating seat 120. Then, the locking member 152 is completely driven into the second locking groove 122, which means that the locking member 152 moves from the locked position to the unlocked position, releasing the locked state of the rotating seat 120 and the first seat 112, so that the rotating seat 120 can pivot relative to the first connecting seat 110.
[0053] Further, refer to Figure 3 , Figure 6 and Figure 7The extension 1512 has a first inclined surface 15120 near the end of the second connecting seat 130, and the second connecting seat 130 has a second inclined surface 1311 on the side facing the rotating seat 120. In an exemplary embodiment, the second connecting seat 130 has two second inclined surfaces 1311, and each second inclined surface 1311 is inclined away from the rotating seat 120 along the first rotation direction. The number of first inclined surfaces 15120 and second inclined surfaces 1311 is equal, and each first inclined surface 15120 is approximately in contact with one second inclined surface 1311 to increase the contact area between the extension 1512 and the second connecting seat 130. During the process of pivoting joint mechanism 14 switching from the unfolded state to the folded state, when the second connecting seat 130 rotates relative to the first connecting seat 110 in the first rotation direction, the contact position between the extension 1512 and the second inclined surface 1311 gradually moves from the side of the second inclined surface 1311 away from the rotating seat 120 to the side of the second inclined surface 1311 closer to the rotating seat 120. Then, the moving member 151 moves towards the rotating seat 120, thereby driving the locking member 152 to fully enter the second locking groove 122, which means that the locking member 152 moves from the locked position to the unlocked position.
[0054] In some embodiments, one of the inner wall of the first locking groove 1122 and the moving member 151 is provided with a limiting rib 115, and the other is provided with a recess 1511, with the limiting rib 115 and the recess 1511 slidingly engaged. Exemplarily, the moving member 151 is provided with the recess 1511, and the first connecting seat 110 is provided with the limiting rib 115, the limiting rib 115 engaging with the recess 1511 to limit the movement direction of the moving member 151. Exemplarily, refer to... Figure 4 and Figure 6 A limiting rib 115 is disposed within the first locking groove 1122, and the length direction of the limiting rib 115 is parallel to the axial direction of the pivot shaft 140. A recess 1511 is formed on the outer peripheral side of the moving member 151, which accommodates the limiting rib 115, allowing the moving member 151 to move along the length direction of the limiting rib 115. By providing the recess 1511 on the moving member 151 and engaging it with the limiting rib 115 on the first connecting seat 110, the movement direction of the moving member 151 is restricted, ensuring that the moving member 151 can only move along the axial direction parallel to the pivot shaft 140. This prevents the moving member 151 from rotating arbitrarily, which would prevent the extension 1512 from extending into the through hole 1128, thus ensuring that the first inclined surface 15120 and the second inclined surface 1311 can fit together.
[0055] Of course, in some other embodiments, the limiting rib 115 can also be provided on the moving member 151, and the recess is formed on the inner wall of the first locking groove 1122. This can also restrict the moving direction of the moving member 151, so that it can only move along the length direction parallel to the pivot shaft 140.
[0056] On the other hand, in some embodiments, the travel distance of the driven part 121 is greater than the travel distance of the driving member 111. (See reference...) Figure 8 and Figure 9 In an exemplary embodiment, when the pivot joint mechanism 14 switches from an unfolded state to a folded state, the rotating seat 120 rotates relative to the pivot joint mechanism 14 along a first rotational direction. During this process, the driven portion 121 initially rotates along the first rotational direction under the drive of the drive member 111. When the drive member 111 rotates to its maximum travel distance along the first rotational direction, since the travel distance of the driven portion 121 is greater than that of the drive member 111, the driven portion 121 is no longer driven by the drive member 111, but continues to rotate along the first rotational direction under the action of an external force. This external force can refer to gravity or a pushing force actively applied by the user through their hand or other tools; this application does not impose any limitations.
[0057] In some embodiments, the pivot joint mechanism 14 is provided with a second limiting groove 1123, which is located on the side of the pivot joint mechanism 14 facing the rotary seat 120. (See reference) Figure 4 , Figure 8 and Figure 9 For example, a second limiting groove 1123 is formed in the first seat 112. Specifically, the first protrusion 1124, the second protrusion 1125, and the main body wall 1121 of the first seat 112 constitute an arc-shaped second limiting groove 1123. The driving member 111 is located within the second limiting groove 1123, and the driven part 121 extends into the second limiting groove 1123. During the process of the pivot joint mechanism 14 switching from the unfolded state to the folded state, the rotating seat 120 rotates relative to the first connecting seat 110 in a first rotation direction, and then the driven part 121 moves under the drive of the driving member 111. During this process, the second limiting groove 1123 guides the driven part 121 to move in an arc direction, ensuring that the rotating seat 120 and the first connecting seat 110 remain coaxially arranged during the pivoting movement of the rotating seat 120 relative to the first connecting seat 110. The first seat 112 is also provided with a third protruding ridge 1126, which forms one end of the second limiting groove 1123. When the driven part 121 moves in the second limiting groove 1123 to abut against the third protruding ridge 1126, the rotating seat 120 can no longer rotate. Therefore, the second limiting groove 1123 restricts the rotation angle of the rotating seat 120 relative to the first connecting seat 110, preventing the rotating seat 120 from rotating excessively relative to the first connecting seat 110 and causing the folding device 100 to fold excessively.
[0058] In some embodiments, the pivot joint mechanism 14 has a first limiting groove 1127, along which the driving member 111 can slide. The first limiting groove 1127 limits the travel of the driving member 111. More specifically, the first limiting groove 1127 is located on the side of the pivot joint mechanism 14 facing the rotating seat 120. In this embodiment, the first connecting seat 110 is provided with the first limiting groove 1127. (See reference...) Figure 8 and Figure 9 The first limiting groove 1127 is provided on the main body wall 1121 of the first seat 112, and is located in the area corresponding to the second limiting groove 1123 on the main body wall 1121 of the first seat 112. The first limiting groove 1127 is arc-shaped. The folding device 100 is also provided with a pin 160. The pin 160 passes through the driving member 111 in a direction parallel to the axial direction of the pivot shaft 140 and extends into the first limiting groove 1127, so that the driving member 111 can slide along the extension direction of the first limiting groove 1127, and the length of the first limiting groove 1127 in the arc direction is the maximum travel of the driving member 111.
[0059] Of course, the first limiting groove 1127 and the second limiting groove 1123 can also be in other shapes besides arc shape. This application does not limit the shape of the first limiting groove 1127 and the second limiting groove 1123.
[0060] In some embodiments, both the driving member 111 and the driven part 121 are received in the second limiting groove 1123, and the first limiting groove 1127 is disposed on the wall surface of the second limiting groove 1123. In an exemplary embodiment, a portion of the surface of the main body wall 1121 facing the rotating seat 120 constitutes the bottom wall surface of the second limiting groove 1123, and the two opposing sides of the first protrusion 1124 and the second protrusion 1125 constitute the two side walls of the second limiting groove 1123. The first limiting groove 1127 is disposed in the main body wall 1121, that is, the first limiting groove 1127 communicates with the second limiting groove 1123 on the bottom wall surface of the second limiting groove 1123. Moreover, since the first limiting groove 1127 is disposed on the bottom wall surface of the second limiting groove 1123, the pin 160 extends into the first limiting groove 1127 through the first limiting groove 1127. Thus, the movement stroke of the drive member 111 can be limited by the engagement between the pin 160 and the first limiting groove 1127, without the need for additional complex connecting structures, which helps to reduce the structural complexity of the pivot joint mechanism 14. In some other embodiments, the first limiting groove 1127 may also be provided on the first protrusion 1124 and / or the second protrusion 1125, that is, the first limiting groove 1127 and the second limiting groove 1123 communicate with the side wall surface.
[0061] In addition, in some other embodiments, the second limiting groove 1123 may have only two walls. For example, when the second limiting groove 1123 is a V-shaped groove, the two walls of the second limiting groove 1123 join together to form an included angle. Furthermore, the second limiting groove 1123 may have only one wall. For example, the side wall and bottom wall of the second limiting groove 1123 are smoothly connected to form an arc-shaped wall. Of course, the second limiting groove 1123 may also have four or more walls. In these embodiments, the first limiting groove 1127 may communicate with the second limiting groove 1123 via one of the walls, or it may communicate with multiple walls; this application does not impose any limitations on this.
[0062] In some embodiments, the driving member 111 includes a first elastic member 1111 and a driving block 1112, the driving block being located between the first elastic member 1111 and the driven portion 121. Specifically, the first elastic member 1111 is connected to the driving block 1112, and the driving block 1112 can abut against the driven portion 121. More specifically, one end of the first elastic member 1111 is connected to one end of the second limiting groove 1123, and the other end of the first elastic member 1111 is connected to the driving block 1112. The pin 160 passes through the driving block 1112 in a direction parallel to the axial direction of the pivot shaft 140 and extends into the first limiting groove 1127, allowing the driving block 1112 to slide along the extending direction of the first limiting groove 1127. (See reference...) Figure 8 and Figure 9Both the first elastic element 1111 and the driving block 1112 are located within the second limiting groove 1123. A fourth protruding ridge 1129 is provided within the first seat 112, forming the beginning of the second limiting groove 1123. The first elastic element 1111 is a spring, with one end connected to the fourth protruding ridge 1129 and the other end connected to the driving block 1112. The driven portion 121 extends into the first seat 112 and abuts against the driving block 1112; the driven portion 121 is located within the second limiting groove 1123. Understandably, when the locking assembly 150 is in the locked position, the driving block 1112 connects to (e.g., abuts against) the driven portion 121, and the elastic force of the first elastic element 1111 provides a tendency for the rotating seat 120 to rotate in a first rotation direction. More specifically, when the locking component 150 is in the locked position, the first elastic element 1111 is compressed, and the driving block 1112 always tends to move towards the end of the first limiting groove 1127, that is, tends to rotate along the first rotation direction. Since the driving block 1112 abuts against the driven part 121, the rotating seat 120 always tends to pivot relative to the first connecting seat 110. By providing the first elastic element 1111 and the driving block 1112, when the folding device 100 is folding, the first elastic element 1111 can drive the rotating seat 120 to pivot more quickly, shortening the time required for folding, and at the same time, folding the folding device 100 is more effortless. In some other embodiments, the first elastic element 1111 can also be an elastic component such as a rubber band, which is not limited in this application.
[0063] It should be noted that in some embodiments, the folding device 100 may not have a pin 160. For example, the driving block 1112 extends to the side near the first limiting groove 1127 to form two hook-shaped snap-fit elastic arms. After the snap-fit elastic arms pass through the first limiting groove 1127 through elastic deformation, they can snap onto the back of the first limiting groove 1127. In this way, the driving block 1122 will not detach from the first limiting groove 1127, and the driving block 1122 can slide along the extension direction of the first limiting groove 1127.
[0064] In some embodiments, the folding device 100 further includes a second elastic element 141. (See reference) Figure 3For example, the second elastic element 141 is also a spring. The second elastic element 141 is disposed between the rotating seat 120 and the locking element 152, and its two ends are respectively connected to the rotating seat 120 and the locking element 152. Understandably, if the pivot joint mechanism 14 switches from the unfolded state to the folded state, when the locking element 152 moves along the length direction of the pivot shaft 140 towards the rotating seat 120, the second elastic element 141 is compressed, and the rotation of the first connecting seat 110 and the second connecting seat 130 causes the first locking groove 1122 and the second locking groove 122 to be misaligned. The locking element 152 cannot return to the first locking groove 1122, and the second elastic element 141 remains compressed. The second elastic element 141 applies a force to the locking element 152 to move away from the rotating seat 120, so that the locking element 152 has a tendency to move away from the rotating seat 120. When the locking member 152 is fully inserted into the second locking groove 122, if the pivot joint mechanism 14 switches from the folded state to the unfolded state, the first locking groove 1122 and the second locking groove 122 are realigned. Then, the second elastic member 141 applies a pushing force to the locking member 152 to move it toward the first locking groove 1122, which can make the locking member 152 tend to move back into the first locking groove 1122, so as to automatically reset from the unlocked position to the locked position.
[0065] refer to Figure 8 When the locking member 152 is simultaneously located in the first locking groove 1122 and the second locking groove 122, the rotating seat 120 cannot rotate relative to the first connecting seat 110.
[0066] by Figure 8 Taking the folding device 100 shown as an example, when performing the folding operation on the folding device 100, the second connecting seat 130 is rotated clockwise relative to the first connecting seat 110, driving the locking member 152 to fully enter the second locking groove 122. When the locking member 152 is fully entered into the second locking groove 122, the rotating seat 120 can rotate relative to the first connecting seat 110, and the locking member 152 rotates with the rotating seat 120, causing the locking member 152 to be misaligned with the first locking groove 1122. In this case, the rotating seat 120 can rotate relative to the first connecting seat 110 in the first rotation direction until the driven part 121 abuts against the third protrusion 1126. At this time, the positional relationship between the locking member 152 and the first locking groove 1122 is as follows. Figure 9 As shown.
[0067] by Figure 9Taking the folding device 100 shown as an example, when unfolding the folding device 100, the second connecting seat 120 is rotated counterclockwise relative to the first connecting seat 110 until the extension 1512 is opposite to the second inclined surface 1311. At this time, the rotating seat 120 is rotated counterclockwise relative to the first connecting seat 110. When the first locking groove 1122 of the first connecting seat 110 is aligned with the second locking groove 122 of the rotating seat 120, the locking member 152 is driven by the second elastic member 141 to re-enter the first locking groove 1122, so that the rotating seat 120 is blocked by the locking member 152 and cannot rotate relative to the first seat body 112, thereby relocking the rotating seat 120.
[0068] On the other hand, refer to Figure 1 and Figure 2 This application also provides a stroller 10, which includes a frame, a pivot joint mechanism 14, a rotating seat 120, a connecting assembly 15, and a frame locking mechanism 16. The pivot joint mechanism 14 is disposed on the frame and has an unfolded state and a folded state; the rotating seat 120 is pivotally connected to the pivot joint mechanism 14; the connecting assembly 15 is connected to the rotating seat 120, and at least a portion of the connecting assembly 15 forms a first plane A; the frame locking mechanism 16 is connected to the frame. When the operating member 161 is subjected to force in a first direction, it drives the pivot joint mechanism 14 to switch from the unfolded state to the folded state. In at least one stage of the switching process, the pivot joint mechanism 14 drives the connecting assembly 15 to move relative to the pivot joint mechanism 14 in a first rotational direction, such that the angle formed by the first plane A and the first direction gradually increases.
[0069] Specifically, the pivot joint mechanism 14 includes the first connecting seat 110 and the second connecting seat 130 in the aforementioned folding device 100. The frame includes a front stand 11, a rear stand 12, a handlebar support 13, a seat post 17, and a connecting tube 18. The seat post 17 is U-shaped and has two first hinge portions 171 and two second hinge portions 172. The two first hinge portions 171 are located at both ends of the seat post 17, and the seat post 17 is hinged to both ends of the front stand 11 through the two first hinge portions 171. The two second hinge portions 172 are arranged opposite each other, and the seat post 17 is hinged to the rear stands 12 on both sides through the two second hinge portions 172. The frame locking mechanism 16 includes an operating member 161 and two locking joints 162. The two locking joints 162 are located at both ends of the operating member 161, and the two locking joints 162 are slidably connected to the seat post 17. The locking joint 162 is hinged to the first seat 112 via the linkage tube 18.
[0070] Two locking joints 162 can be locked or unlocked with the seatpost 17. For example, the locking joints 162 are provided with locking pins (not shown), and the seatpost 17 is provided with several locking holes (not shown). When the locking pins are engaged with the locking holes, the locking joints 162 and the seatpost 17 are locked, and the frame locking mechanism 16 cannot slide along the extension direction of the seatpost 17. When the locking pins are disengaged from the locking holes, the locking joints 162 and the seatpost 17 are unlocked, and the frame locking mechanism 16 can slide along the extension direction of the seatpost 17.
[0071] It should be noted that both ends of the linkage tube 18 are hinged to the first connecting seat 110 and the locking joint 162, respectively. Understandably, when the pivot joint mechanism 14 switches between the extended and folded states, the locking joint 162 of the frame locking mechanism 16 adaptively slides along the extension direction of the seat tube 17. Then, the locking joint 162 drives the first connecting seat 110 to rotate through the linkage tube 18, so that the angle between the plane where the seat tube 17 is located and the plane where the front leg 11 is located is adaptively adjusted, and the angle between the plane where the seat tube 17 is located and the plane where the two rear legs 12 are located is also adaptively adjusted.
[0072] The connecting component 15 can be a part such as an armrest or a tray, used to connect to the frame. In this embodiment, the connecting component 15 is approximately "U"-shaped, with each end connected to a rotating seat 120. In this embodiment, the connecting component 15 and the rotating seat 120 are detachably connected; specifically, the rotating seat 120 has a locking portion on its opposite side, which engages with the locking structure of the connecting component 15. In other embodiments, the connecting component 15 and the rotating seat 120 may be fixedly connected.
[0073] refer to Figure 1 and Figure 2 The plane in which the connecting component 15 is located is the first plane A. In other embodiments, the overall structure of the connecting component 15 may not be on the same plane, but at least a portion of the structure of the connecting component 15 is located within the first plane A.
[0074] refer to Figure 1When the operating member 161 is not under force, the frame locking mechanism 16 is locked to the seat post 17, and the locking joint 162 cannot slide along the length of the seat post 17. When the operating member 161 is subjected to rotational force, the locking joint 162 of the frame locking mechanism 16 is released from the seat post 17, so the locking joint 162 can slide along the length of the seat post 17. The operating member 161 is provided with a lifting part 1610. When the lifting part 1610 is pulled in the first direction, the operating member 161 is subjected to rotational force, causing the frame locking mechanism 16 to release from the seat post 17. The specific implementation process of the locking and unlocking of the frame locking mechanism 16 is prior art and will not be described in detail here. In this embodiment, the first direction is a vertically upward direction. In this case, it is easier for the operator to pull the lifting part 1610. Of course, the first direction can also be an upward angle, that is, the angle between the first direction and the vertically upward direction is an acute angle.
[0075] Figure 1 This is a schematic diagram of the pivot joint mechanism 14 in the unfolded state. Correspondingly, the stroller 10 is in the unfolded state, and the angle formed by the first plane A and the first direction is an acute angle. Figure 2 This is a schematic diagram showing the pivot joint mechanism 14 in a folded state. Correspondingly, the stroller 10 is in a folded state, and the angle formed by the first plane A and the first direction is an obtuse angle. It can be understood that when the stroller 10 is folded... Figure 1 The unfolded state shown has been switched to Figure 2 During the folding process shown, the connecting assembly 15 rotates along the first rotation direction under the drive of the first elastic element 1111, that is, as shown... Figure 1 The counterclockwise rotation shown (or downward rotation toward the front of the stroller) causes the angle between the first plane A and the first direction to gradually increase. The lifting part 1610 can be a component such as webbing or a hose, and this application does not limit it.
[0076] It should be noted that the reference Figure 8 and Figure 9 The connecting component 15 rotates along the first rotation direction (e.g.) Figure 1The counter-clockwise rotation process shown includes a first stage and a second stage. In the first stage, the first elastic element 1111 drives the driving element 111 to move to the maximum stroke constrained by the second limiting groove 1123. During this process, the rotating seat 120 is driven by the driving element 111 to rotate a certain distance in the first rotation direction, and the connecting assembly 15 is driven to rotate unidirectionally. Then, the process of the connecting assembly 15 rotating in the first rotation direction enters the second stage. In the second stage, the connecting assembly 15 continues to rotate in the first rotation direction under the action of external force, and therefore does not interfere with the first direction. In the second stage, even if the first elastic element 1111 cannot continue to drive the driven part 121 to move through the driving element 111, the connecting assembly 15 will continue to rotate in the first rotation direction under the action of external force, completing the folding, so that the connecting assembly 15 maintains unidirectional rotation and avoids collision with the user's hand.
[0077] As for the stroller 10 involved in this application, since the connecting component 15 rotates along the first rotation direction under the drive of the first elastic member 1111, the connecting component 15 will not rotate upward and then backward. As a result, the connecting component 15 avoids the user's hand, thus preventing the connecting component 15 from automatically folding and colliding with the user's hand during the folding process of the stroller 10, which could cause discomfort or even injury to the operator.
[0078] refer to Figure 1 In some embodiments, when the pivot joint mechanism 14 is in the extended state, the height of the operating member 161 is lower than the height of the rotating seat 120. When the locking joint 162 slides along the seat tube 17, the first connecting seat 110 can be rotated relative to the second connecting seat 130 in the opposite direction of the first rotation direction via the linkage tube 18, so as to facilitate the folding of the handle frame 13 and the front foot frame 11.
[0079] The following combination Figure 1 and Figure 2Briefly describing the folding process of the stroller 10 in this embodiment: When the stroller 10 is in the unfolded state, the user operates the operating component 161, for example, by pulling the lifting part 1610 upwards, which causes the locking joint 162 to release from the seat post 17. The user continues to operate the lifting part 1610, causing the frame locking mechanism 16 to slide along the seat post 17, and then, through the connecting tube 18, pulls the first connecting seat 110 to pivot relative to the second connecting seat 130, thus gradually switching the pivot joint mechanism 14 from the unfolded state to the folded state. During the switching process of the pivot joint mechanism 14, the second connecting seat 130 rotates, causing the second inclined surface 1311 to gradually push the moving member 151 towards the rotating seat 120. The moving member 151 then pushes the locking member 152 towards the rotating seat 120 until the locking member 152 disengages from the first locking groove 1122 of the first connecting seat 110 and enters the second locking groove 122. At this point, the locking member 152 is in the unlocked position, thus unlocking the rotating seat 120 from the pivot joint mechanism 14. During rotation, the driving member 111 of the pivot joint mechanism 14 pushes against the driven part 121 of the rotating seat 120, causing the rotating seat 120 to rotate relative to the pivot joint mechanism 14 in the first rotation direction. This, in turn, drives the connecting assembly 15 connected to the rotating seat 120 to rotate in the first rotation direction, enabling the connecting assembly 15 to rotate in the first rotation direction and fold when the frame is folded.
[0080] The following combination Figure 1 and Figure 2 Briefly describe the unfolding process of the stroller 10 in this embodiment: During the unfolding process of the frame, the pivot joint mechanism 14 switches from the folded state to the unfolded state. The second connecting seat 120 rotates relative to the first connecting seat 110 until the extension 1512 is opposite to the second inclined surface 1311. At this time, the user only needs to slightly lift the connecting assembly 15 or shake the frame to align the second locking groove 122 with the first locking groove 1122, so that the locking member 152 re-enters the first locking groove 1122 under the drive of the second elastic member 141. Then, the rotating seat 120 is blocked by the locking member 152 and cannot rotate relative to the first connecting seat 110, thereby relocking the rotating seat 120. As the locking member 152 moves toward the first locking groove 1122, it pushes the moving member 151 to move toward the second connecting seat 130, and causes the first inclined surface 15120 to re-fit with the second inclined surface 1311.
[0081] 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.
[0082] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. A folding device, characterized by The folding device comprises: a pivot joint mechanism having a driving member and being switchable between an unfolded state and a folded state; a rotating seat being pivotally connected with the pivot joint mechanism and being used to connect with a connecting assembly, the rotating seat having a driven part; a locking assembly being movably connected with at least one of the pivot joint mechanism and the rotating seat, the locking assembly having a locked position for limiting mutual rotation of the rotating seat and the pivot joint mechanism and an unlocked position for allowing mutual rotation of the rotating seat and the pivot joint mechanism; wherein when the pivot joint mechanism is switched from the unfolded state to the folded state, the pivot joint mechanism drives the locking assembly to move from the locked position to the unlocked position, and when the locking assembly is in the unlocked position, the driving member drives the driven part to move so that the rotating seat rotates relative to the pivot joint mechanism in a first rotating direction.
2. The folding device of claim 1, wherein The moving stroke of the driven part is greater than the moving stroke of the driving member.
3. The folding device according to claim 1 or 2, characterized in that The pivot joint mechanism has a first limiting groove along which the driving member is slidable, the first limiting groove being used to limit the moving stroke of the driving member.
4. The folding device of claim 3, wherein The side of the pivot joint mechanism facing the rotating seat has a second limiting groove, the driven part being accommodated in and moving along the second limiting groove, the length of the second limiting groove being greater than the length of the first limiting groove.
5. The folding device of claim 4, wherein The driving member and the driven part are both accommodated in the second limiting groove, and the first limiting groove is arranged on the wall surface of the second limiting groove.
6. The folding apparatus of claim 1, wherein The driving member comprises a first elastic member and a driving block, the driving block being located between the first elastic member and the driven part; When the locking assembly is in the locked position, the driving block is connected with the driven part, and the elastic force of the first elastic member provides a motion tendency for the rotating seat to rotate in the first rotating direction.
7. The folding device of claim 6, wherein The pivot joint mechanism has a first connecting seat and a second connecting seat being pivotally connected with each other, the first connecting seat being pivotally connected with the rotating seat, the side of the first connecting seat facing the rotating seat being provided with a first limiting groove and a second limiting groove; wherein, The driving block is slidable along the first limiting groove, the first limiting groove being used to limit the moving stroke of the driving member, one end of the first elastic member being connected with one end of the second limiting groove, the other end of the first elastic member being connected with the driving block, and the first elastic member, the driving block and the driven part are all located in the second limiting groove.
8. A stroller, characterized in that, The stroller comprises: a pivot joint mechanism being arranged on a foldable frame and being switchable between an unfolded state and a folded state; a rotating seat being pivotally connected with the pivot joint mechanism; a connecting assembly being connected with the rotating seat, at least a part of the connecting assembly forming a first plane; a frame locking mechanism being connected with the frame; The vehicle frame locking mechanism has an operating member. When the operating member is forced in a first direction, the pivoting joint mechanism is switched from the unfolded state to the folded state. During the switching process, at least in one stage, the pivoting joint mechanism drives the connecting assembly to rotate relative to the pivoting joint mechanism in a first rotating direction, so that the included angle between the first plane and the first direction gradually increases.
9. The stroller of claim 8, wherein, The process of rotating the connecting assembly in the first rotating direction includes a first stage and a second stage. In the first stage, the connecting assembly is driven by the driving member to rotate in the first rotating direction. In the second stage, the connecting assembly continues to rotate in the first rotating direction under the action of external force.
10. The stroller of claim 8, wherein, When the pivoting joint mechanism is in the unfolded state, the height of the operating member is lower than the height of the rotating seat.