Pivot connection device and infant carrier
By using the limiting cooperation between the damping part and the slot, the problem of inconvenient operation of the pivoting connection device is solved, achieving convenient operation and stable positioning, and improving the reliability of the structure.
Patent Information
- Application Number
- CN202521952086.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-10
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-10
AI Technical Summary
In the prior art, pivoting connection devices are inconvenient to operate and have difficulty in effectively maintaining the relative positions of components.
The damping part and the slot are used for limiting the movement. The second pivot member can rotate relative to the first pivot member by engaging the locking protrusion and the slot. The damping force is generated by the elastic deformation of the damping part, which facilitates operation and maintains the predetermined position.
It enables convenient operation and stable positioning of the pivoting components, reduces rotational resistance, and improves operational convenience and structural reliability.
Smart Images
Figure CN224676177U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of infant stroller technology, specifically to a pivoting connection device and an infant carrier. Background Technology
[0002] Foldable or unfoldable frames have a wide range of applications, such as baby strollers or electric wheelchairs. These frames have many pivoting structures. When two parts are pivotally connected and it is necessary to rotate one part to a predetermined position and maintain its relative position with the other part, the two parts need to be fastened with operating bolts or other components to keep them relatively fixed. Although this structure is reliable, it is inconvenient to operate. Utility Model Content
[0003] In view of the above problems, this application provides a pivoting connection device, which prevents the two components from rotating relative to each other when one pivoting component rotates to a predetermined position relative to another pivoting component by using the limiting cooperation of the damping part and the slot.
[0004] In a first aspect, this application provides a pivoting connection device, comprising:
[0005] The first pivot member has a pivot connection hole, and a plurality of slots are formed on the inner peripheral surface of the pivot connection hole. The slots extend along the axial direction of the pivot connection hole, and the plurality of slots are spaced apart along the circumferential direction of the pivot connection hole.
[0006] The second pivot member has a body portion and a damping portion that pivotally engages with the pivot connection hole. The body portion has an abutment surface that abuts against the end of the pivot connection hole. The abutment surface is provided with the damping portion. A locking protrusion is formed on the surface of the damping portion facing the inner wall of the pivot connection hole. The locking protrusion extends axially along the pivot connection hole. During the rotation of the second pivot member relative to the first pivot member, the locking protrusion is configured to move into or out of the locking groove along the circumferential direction of the pivot connection hole.
[0007] When the snap-fit protrusion moves out of the slot, the wall of the slot presses against the snap-fit protrusion, causing the damping part to undergo elastic deformation.
[0008] By using the locking protrusion and the locking groove to limit the movement of the second pivot member relative to the first pivot member, the second pivot member can rotate relative to the first pivot member. During the rotation of the second pivot member relative to the first pivot member, it is necessary to overcome the resistance of the locking groove on the locking protrusion, so that the damping part undergoes elastic deformation relative to the first pivot member in the radial direction of the pivot connection hole, thereby generating a damping force during the rotation. By overcoming the damping force, the locking protrusion moves away from the locking groove in the radial direction of the pivot connection hole, so as to disengage from the locking groove. Thus, when the second pivot member rotates relative to the first pivot member to the predetermined position, the locking protrusion can be locked into the locking groove. The locking groove limits the locking protrusion, thereby facilitating operation.
[0009] In some embodiments, a plurality of limiting protrusions are formed on the inner peripheral surface of the pivot connection hole, the plurality of limiting protrusions are arranged along the circumferential direction of the pivot connection hole, and a groove is formed between two connected limiting protrusions.
[0010] In some embodiments, there are multiple snap-fit protrusions, and at least a portion of the snap-fit protrusions are configured to correspond one-to-one with a corresponding number of snap-fit slots along the circumferential direction of the pivot connection hole.
[0011] In some embodiments, the slots are in multiple sets, each set having multiple slots, and the damping parts are in multiple sets. Each set of slots corresponds to a snap-fit protrusion of each damping part. Along the circumference of the pivot connection hole, the minimum distance between the two outermost slots in each set is greater than the minimum distance between the two outermost snap-fit protrusions of the corresponding damping parts.
[0012] In some embodiments, the limiting protrusion includes two first guide surfaces arranged circumferentially opposite each other along the pivot connection hole. The first guide surface is an outwardly convex curved surface or an inwardly concave first curved surface extending axially along the pivot connection hole. In the cross-section of the same limiting protrusion, the tangent at any point of the first curved surface is set at an angle to the protrusion direction of the limiting protrusion, and the cross-section is perpendicular to the axis of the pivot connection hole.
[0013] In some embodiments, the limiting protrusion includes two first guide surfaces arranged circumferentially opposite each other along the pivot connection hole. The first guide surfaces are planes, and in the same limiting protrusion, the first guide surfaces are arranged at an angle to the protrusion direction of the limiting protrusion.
[0014] In some embodiments, the snap-fit protrusion includes two second guide surfaces arranged circumferentially opposite to each other along the pivot connection hole. The second guide surfaces are either convex or concave curved surfaces extending axially along the pivot connection hole. In the cross-section of the snap-fit protrusion, the tangent at any point of the second curved surface is set at an angle to the protrusion direction of the snap-fit protrusion, and the cross-section is perpendicular to the axis of the pivot connection hole.
[0015] In some embodiments, the snap-fit protrusion includes two second guide surfaces arranged circumferentially opposite each other along the pivot connection hole. The second guide surfaces are planar and are arranged at an angle to the protrusion direction of the snap-fit protrusion.
[0016] In some embodiments, the slots are recessed in the radial direction of the pivot connection hole, the number of locking protrusions is less than or equal to the number of slots, and each locking protrusion is configured to correspond one-to-one with a corresponding number of slots for limiting engagement along the circumferential direction of the pivot connection hole.
[0017] In some embodiments, there are multiple damping portions, which are spaced apart along the circumference of the pivot connection hole.
[0018] In some embodiments, a first limiting portion is formed on the inner peripheral surface of the pivot connection hole, a first limiting portion is provided between two adjacent damping portions, a second limiting portion is provided on the abutting surface, and the second limiting portion has a first end and a second end opposite to each other along the circumferential direction of the pivot connection hole, and at least one of the first end and the second end is spaced apart from the first limiting portion along the circumferential direction of the pivot connection hole.
[0019] In some embodiments, there are two first limiting portions, which are arranged opposite to each other and are provided with a second limiting portion on at least one side along the circumference of the pivot connection hole.
[0020] In some embodiments, the abutment surface is provided with at least two positioning portions, which are spaced apart circumferentially along the pivot connection hole, and the positioning portions are positioned and engaged with the inner circumferential surface of the pivot connection hole.
[0021] In some embodiments, the number of positioning portions and the number of second limiting portions are equal, and the positioning portions and the second limiting portions are integrally formed; and / or, the positioning portion is an arc-shaped structure extending circumferentially along the pivot connection hole.
[0022] In some embodiments, the damping portion is a sheet-like structure extending circumferentially along the pivot connection hole.
[0023] Secondly, this application provides an infant carrier, comprising:
[0024] Frame;
[0025] The pivotal connection device of the first aspect, wherein the first pivot member is fixed to the vehicle frame;
[0026] The first vegetable basket rack is connected to the second pivot component.
[0027] In some embodiments, the frame includes a front frame and a rear frame, the front frame and the rear frame being pivotally connected, and the pivot axis between the first pivot member and the second pivot member coincides with the pivot axis between the front frame and the rear frame.
[0028] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description
[0029] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:
[0030] Figure 1 This is a partial exploded view of a pivoting connection device according to an embodiment of this application;
[0031] Figure 2 for Figure 1 A magnified view of a portion of point I;
[0032] Figure 3 This is a structural diagram of the pivot connection hole of the first pivot member and the pivot engagement of the second pivot member in a pivot connection device according to an embodiment of this application;
[0033] Figure 4 This is an isometric view of one embodiment of the second pivot member in the pivot connection device of some embodiments of this application;
[0034] Figure 5 for Figure 4 A magnified view of section II;
[0035] Figure 6 This is an isometric view of an infant vehicle according to an embodiment of this application.
[0036] The reference numerals in the detailed embodiments are as follows:
[0037] 100. Infant and toddler vehicles;
[0038] 10. Pivoting connection device;
[0039] 10. First pivot member; 11. Pivot connection hole; 12. Slot; 13. Limiting protrusion; 131. First guide surface; 14. First limiting part; 15. Third connection hole;
[0040] 20. Second pivot member; 21. Body part; 211. Abutting surface; 212. Second limiting part; 213. Positioning part; 214. Insertion hole; 215. Receiving cavity; 216. First connecting hole; 22. Damping part; 221. Snap-fit protrusion; 2211. Second guide surface;
[0041] 30. Chassis; 31. Front chassis; 32. Rear chassis;
[0042] 40. Push handle;
[0043] 50. Casters;
[0044] 60. The first vegetable basket rack;
[0045] 70. Second basket support. Detailed Implementation
[0046] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.
[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.
[0048] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.
[0049] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0050] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.
[0051] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).
[0052] In the description of the embodiments of this application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and other indications of orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application 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. Therefore, they should not be construed as limitations on the embodiments of this application.
[0053] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" 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. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.
[0054] Please refer to Figures 1-5 In an embodiment of this application, a pivoting connection device 10 is provided, including a first pivot member 10 and a second pivot member 20. The first pivot member 10 has a pivoting connection hole 11, and a plurality of slots 12 are formed on the inner peripheral surface of the pivoting connection hole 11. The slots 12 extend axially along the pivoting connection hole 11, and the plurality of slots 12 are spaced apart circumferentially along the pivoting connection hole 11. The second pivot member 20 has a body portion 21 and a damping portion 22 that pivotally engages with the pivot connection hole 11. The body portion 21 has an abutment surface 211 that abuts against the end of the pivot connection hole 11. The abutment surface 211 is provided with the damping portion 22. The surface of the damping portion 22 facing the inner wall of the pivot connection hole 11 has a locking protrusion 221. The locking protrusion 221 extends axially along the pivot connection hole 11. During the rotation of the second pivot member relative to the first pivot member, the locking protrusion 221 is configured to move into or out of the locking groove 12 along the circumferential direction of the pivot connection hole 11.
[0055] When the snap-fit protrusion 221 moves out of the slot 12, the wall of the slot 12 presses against the snap-fit protrusion 221, causing the damping part 22 to undergo elastic deformation.
[0056] The slot 12 can be a rectangular slot, a V-shaped slot, or other irregularly shaped slot. For example, the slot 12 can be a slot defined by two semi-cylindrical protrusions.
[0057] The snap-fit protrusion 221 can be a triangular prism, a semi-cylinder, a semi-elliptical cylinder, or other irregular shapes. For example, the outer surface of the snap-fit protrusion 221 can be formed by one or both of curved surfaces and planes.
[0058] The number of snap-fit protrusions 221 can be one or more.
[0059] The damping part 22 can undergo elastic deformation in various ways. For example, the damping part 22 itself is elastic, and during rotation, its elastic deformation can be used to compress it and move it out of the slot 12. This can be achieved by using a spring sheet structure or a corrugated sheet structure. Alternatively, the damping part 22 can be a rigid component. When the wall of the slot 12 presses against the engaging protrusion 221, the damping part 22 undergoes bending deformation relative to the main body 21, causing it to spring up radially inward along the pivot connection hole 11. The damping part 22 then returns to its initial state as the engaging protrusion 221 moves into the slot 12.
[0060] The damping part 22 can be made of nylon, polytetrafluoroethylene or metal, etc.
[0061] The damping part 22 and the body part 21 can be separate structures, fixed by welding, bonding or screw connection. Alternatively, the damping part 22 and the body part 21 can be an integral structure. When the damping part 22 and the body part 21 are integrally formed, the second pivot member 20 can be a plastic or metal part.
[0062] The main body 21 and the first pivot member 10 can be connected by screws or pivot shafts to limit the first pivot member 10 relative to the second pivot member 20 along the axial direction of the pivot connection hole 11.
[0063] By engaging the locking protrusion 221 with the locking groove 12, the second pivot 20 can rotate relative to the first pivot 10. During the rotation of the second pivot 20 relative to the first pivot 10, the resistance of the locking groove 12 to the locking protrusion 221 needs to be overcome, so that the damping part 22 undergoes elastic deformation relative to the first pivot 10 in the radial direction of the pivot connection hole 11, so that a damping force is generated during the rotation. By overcoming the damping force, the locking protrusion 221 moves away from the locking groove 12 in the radial direction of the pivot connection hole 11, so as to disengage from the locking groove 12. Thus, when the second pivot 20 rotates relative to the first pivot 10 to a predetermined position, the locking protrusion 221 can be locked into the locking groove 12. The locking groove 12 realizes the limiting of the locking protrusion 221, thereby facilitating operation.
[0064] In some embodiments, please refer to Figure 1 and Figure 2 Multiple limiting protrusions 13 are formed on the inner peripheral surface of the pivot connection hole 11. The multiple limiting protrusions 13 are arranged circumferentially along the pivot connection hole 11, and a groove 12 is formed between two connected limiting protrusions 13.
[0065] The limiting protrusion 13 can be a strip-shaped protrusion extending axially along the pivot connection hole 11, or it can be multiple non-strip-shaped protrusions or strip-shaped protrusions spaced apart axially along the pivot connection hole 11. The limiting protrusion 13 can be distributed around the pivot connection hole 11, or it can be provided in a part of the inner circumferential surface of the pivot connection hole 11.
[0066] With the setting of multiple limiting protrusions 13, during installation, simply insert the snap-fit protrusion 221 into the corresponding slot 12 to facilitate installation.
[0067] In some embodiments, the slot 12 is recessed in the radial direction of the pivot connection hole 11, and the dimension of the bottom wall of the slot 12 to the axis of the pivot connection hole 11 is greater than the radius of the pivot connection hole 11. The number of locking protrusions 221 is less than or equal to the number of slots 12. Along the circumference of the pivot connection hole 11, each locking protrusion 221 is configured to correspond one-to-one with a corresponding number of slots 12 for limiting engagement.
[0068] In this embodiment, it is not necessary to provide multiple limiting protrusions 13 on the inner peripheral surface of the pivot connection hole 11, and the slot 12 is directly recessed on the inner peripheral surface of the pivot connection hole 11.
[0069] Compared with the above embodiment which uses multiple limiting protrusions 13, when assembling or disassembling the second pivot 20, it is necessary to overcome the resistance of the locking protrusion 221 and the locking groove 12. However, it is also possible to rotate to a predetermined position and then use the locking protrusion 221 and the locking groove 12 to limit the first pivot 10 and the second pivot 20 to maintain their relative positions.
[0070] In some embodiments, please refer to Figure 1 The slots 12 have multiple sets, and each set has multiple slots 12. The damping parts 22 have multiple parts. Each set of slots 12 corresponds to and engages with the snap-fit protrusions 221 of each damping part 22. Along the circumference of the pivot connection hole 11, the minimum distance between the two outermost slots 12 in each set of slots 12 is greater than the minimum distance between the two outermost snap-fit protrusions 221 in the corresponding damping parts 22.
[0071] Thus, damping motion is achieved by the cooperation of multiple damping parts 22 and multiple sets of slots 12, so that the second pivot 20 can be better maintained in the predetermined position when it rotates to the predetermined position.
[0072] In some embodiments, please refer to Figures 3-5 There are multiple snap-fit protrusions 221. Along the circumference of the pivot connection hole 11, at least a portion of the snap-fit protrusions 221 are configured to correspond one-to-one with the corresponding number of slots 12 for limiting engagement.
[0073] Setting the number of snap-fit protrusions 221 to multiple can increase the damping force, thereby reducing the possibility of the second pivot 20 rotating under external force after it has been adjusted to a predetermined position relative to the first pivot 10, thus increasing the reliability of the pivot connection device 10.
[0074] In some embodiments, please refer to Figure 1 and Figure 2 The limiting protrusion 13 includes two first guide surfaces 131 arranged circumferentially opposite each other along the pivot connection hole 11. The first guide surface 131 is an outwardly convex curved surface or an inwardly concave first curved surface extending along the axial direction of the pivot connection hole 11. In the cross-section of the same limiting protrusion 13, the tangent at any point of the first curved surface is set at an angle with the protrusion direction of the limiting protrusion 13, and the cross-section is perpendicular to the axis of the pivot connection hole 11.
[0075] The protruding direction of the limiting protrusion 13 is the direction in which the limiting protrusion 13 bulges relative to the inner circumferential surface of the pivot connection hole 11.
[0076] In the cross-section of the limiting protrusion 13, the profile of the first curved surface can be any one or more combinations of concave circular arcs, convex circular arcs, spline curves, or partial elliptic curves.
[0077] With the first guide surface 131 in place, when the second pivot 20 is rotated, the interaction force between the first guide surface 131 and the snap-fit protrusion 221 has a radial component along the pivot connection hole 11, which can act on the damping part 22, causing the damping part 22 to bend relative to the inner wall of the pivot connection hole 11 due to elastic deformation, so that the snap-fit protrusion 221 slides out of the slot 12, thereby reducing the rotational resistance.
[0078] In other examples, the size of the snap-fit protrusion 221 along its own protrusion direction can be designed to be very small, such as about 1 mm. Even if the first guide surface 131 is parallel to the recessed direction of the slot 12, the snap-fit protrusion 221 can be subjected to shear stress along the circumferential direction of the pivot connection hole 11 and produce elastic deformation, thereby sliding out of the slot 12. At this time, both the snap-fit protrusion 221 and the slot 12 can be inverted trapezoidal or U-shaped.
[0079] In some embodiments, the limiting protrusion 13 includes two first guide surfaces 131 arranged circumferentially opposite to each other along the pivot connection hole 11. The first guide surfaces 131 are planar, and in the same limiting protrusion 13, the first guide surfaces 131 are arranged at an angle to the protrusion direction of the limiting protrusion 13.
[0080] In the cross-section of the card slot 12, the outline of the card slot 12 can be V-shaped or trapezoidal, that is, the two opposing first guide surfaces 131 of the card slot 12 are set at an angle.
[0081] When the second pivot 20 is rotated, the interaction force between the first guide surface 131 and the snap-fit protrusion 221 has a radial component along the pivot connection hole 11, which can act on the damping part 22, causing the damping part 22 to bend relative to the inner wall of the pivot connection hole 11 due to elastic deformation, so that the snap-fit protrusion 221 slides out of the slot 12 to reduce the rotational resistance.
[0082] In some embodiments, please refer to Figure 4 and Figure 5 The snap-fit protrusion 221 includes two second guide surfaces 2211 arranged circumferentially opposite each other along the pivot connection hole 11. The second guide surfaces 2211 are convex or concave curved surfaces extending axially along the pivot connection hole 11. In the cross section of the snap-fit protrusion 221, the tangent at any point of the second curved surface is set at an angle to the protrusion direction of the snap-fit protrusion 221, and the cross section is perpendicular to the axis of the pivot connection hole 11.
[0083] In the cross-section of the snap-fit protrusion 221, the profile of the second curved surface can be any one or more combinations of concave circular arcs, convex circular arcs, spline curves, or partial elliptic curves.
[0084] The protruding direction of the snap-fit protrusion 221 refers to the direction in which the snap-fit protrusion 221 bulges relative to the damping part 22.
[0085] With the provision of the second guide surface 2211, when the second pivot member 20 is rotated, the interaction force between the second guide surface 2211 and the slot 12 has a radial component along the pivot connection hole 11, which can act on the damping part 22, causing the damping part 22 to bend relative to the inner wall of the pivot connection hole 11 due to elastic deformation, so that the locking protrusion 221 slides out from the slot 12, thereby reducing the rotational resistance.
[0086] In some embodiments, the snap-fit protrusion 221 includes two second guide surfaces 2211 arranged circumferentially opposite each other along the pivot connection hole 11. The second guide surfaces 2211 are planar and are arranged at an angle to the protrusion direction of the snap-fit protrusion 221.
[0087] In the cross-section of the snap-fit protrusion 221, the outline of the snap-fit protrusion 221 can be V-shaped or trapezoidal, that is, the two back-to-back second guide surfaces 2211 of the snap-fit protrusion 221 are set at an angle.
[0088] When the second pivot 20 is rotated, the interaction force between the second guide surface 2211 and the slot 12 has a radial component along the pivot connection hole 11, which can act on the damping part 22, causing the damping part 22 to bend relative to the inner wall of the pivot connection hole 11 due to elastic deformation, so that the locking protrusion 221 slides out of the slot 12 to reduce the rotational resistance.
[0089] In some embodiments, please refer to Figure 4 There are multiple damping parts 22, which are spaced apart along the circumference of the pivot connection hole 11.
[0090] The arrangement of multiple damping parts 22 can further increase the rotational resistance and reduce the possibility of relative rotation of the second pivot 20 under the action of external force after the second pivot 20 rotates to the predetermined position, thereby improving the reliability of the positioning of the pivot connection device 10.
[0091] In some embodiments, please refer to Figure 1 and Figure 3 A first limiting portion 14 is formed on the inner peripheral surface of the pivot connection hole 11. The first limiting portion 14 is provided between two adjacent damping portions 22. A second limiting portion 212 is provided on the abutment surface 211. The second limiting portion 212 has a first end and a second end facing away from each other along the circumference of the pivot connection hole 11. At least one of the first end and the second end is spaced 14 away from the first limiting portion along the circumference of the pivot connection hole 11.
[0092] The second limiting part 212 between two adjacent first limiting parts 14 can be one or two.
[0093] The movement distance of the second limiting part 212 between two adjacent first limiting parts 14 can limit the angle of rotation of the second pivot 20 relative to the first pivot 10. The number of damping parts 22 and the interval angle between two adjacent damping parts 22 can be specifically set according to the actual application scenario.
[0094] By setting the first limiting part 14 and the second limiting part 212, the rotation angle of the second pivot member 20 relative to the first pivot member 10 can be limited to prevent the second pivot member 20 from rotating too much. Taking a baby stroller as an example, the first pivot member 10 is fixed to the frame 30, and the second pivot member 20 is connected to a basket frame. The basket frame is formed by wrapping the basket with fabric. When the rotation angle of the second pivot member 20 is too large, it is easy for a person's hand to bump into the frame 30. Therefore, it can play a role in preventing interference or collisions in different scenarios.
[0095] In some embodiments, please refer to Figure 1 and Figure 3 There are two first limiting parts 14, which are arranged opposite to each other. Along the circumference of the pivot connection hole 11, each first limiting part 14 has a second limiting part 212 on at least one side.
[0096] Optionally, the two first limiting parts 14 are arranged at a 180° interval on the inner peripheral surface of the pivot connection hole 11, which can be adapted to different scenarios as needed.
[0097] The two first limiting parts 14, in conjunction with the second limiting parts 212 on both sides, form a clear rotation boundary in the circumferential direction of the pivot connection hole 11. When the second pivot member 20 rotates relative to the first pivot member 10, the second limiting parts 212 are blocked by the first limiting parts 14, thereby strictly limiting the relative rotation angle between the two and avoiding structural interference, component collision, or functional failure caused by excessive rotation. In addition, the two first limiting parts 14 are arranged opposite each other, which can make the force during rotation more balanced, reduce component deformation or wear caused by excessive force on one side, and extend the service life of the pivot connection device 10.
[0098] In some embodiments, please refer to Figure 1 , Figure 3 and Figure 4 The contact surface 211 is provided with at least two positioning parts 213. The at least two positioning parts 213 are arranged at intervals along the circumferential direction of the pivot connection hole 11, and the positioning parts 213 are positioned and engaged with the inner circumferential surface of the pivot connection hole 11.
[0099] At least two circumferentially spaced positioning portions 213 form multi-position contact with the inner circumferential surface of the pivot connection hole 11, which can effectively limit the relative sway of the first pivot member 10 and the second pivot member 20 in the radial direction, ensuring that the two maintain coaxiality during pivoting, reducing offset or jamming caused by gaps, and improving the stability of the overall structure. In addition, the cooperation between the positioning portions 213 and the inner circumferential surface of the pivot connection hole 11 can play a pre-positioning role during the assembly stage, facilitating the alignment and installation of the snap-fit protrusion 221 and the snap-fit groove 12.
[0100] In some embodiments, please refer to Figure 4 The number of positioning parts 213 and the number of second limiting parts 212 are equal, and the positioning parts 213 and the second limiting parts 212 are integrally formed.
[0101] The one-piece molding creates a seamless, integrated structure between the positioning part 213 and the second limiting part 212, completely eliminating potential weaknesses in strength that might exist with separate connections (such as bonding). During pivoting, both the radial support force borne by the positioning part 213 and the limiting impact force borne by the second limiting part 212 can be uniformly transmitted through the complete structure, significantly improving resistance to deformation and durability, making it particularly suitable for high-frequency rotation scenarios. Furthermore, compared to a separate structure, this reduces the complexity of the second pivoting component 20, simplifying manufacturing.
[0102] In some embodiments, please refer to Figure 4 The positioning part 213 is an arc-shaped structure that extends circumferentially along the pivot connection hole 11.
[0103] The circumferentially extending arc-shaped structure allows for more uniform force transmission when the positioning part 213 is subjected to radial loads, reducing the risk of deformation caused by excessive force at a single point. Especially in long-term, high-frequency rotation scenarios, the arc-shaped structure can reduce edge wear, extend the service life of the positioning part 213, and maintain a stable positioning effect.
[0104] In some embodiments, the damping portion 22 is a sheet-like structure extending circumferentially along the pivot connection hole 11.
[0105] Therefore, when the second pivot member 20 is rotated, the damping part 22 is more likely to undergo elastic deformation along the radial direction of the pivot connection hole 11, thereby reducing the resistance to rotation and facilitating operation.
[0106] Please refer to Figures 1-6 In an embodiment of this application, an infant carrier 100 is provided, including a frame 30, a first basket rack 60, and a pivoting connection device 10 as described in the above embodiments. The first pivoting member 10 is fixed to the frame 30. The first basket rack 60 is connected to the second pivoting member 20.
[0107] The frame 30 can be either a folding or non-folding structure.
[0108] Optionally, the infant carrier 100 also includes a second basket frame 70 and a fabric. The second basket frame 70 is fixedly mounted on the frame 30. The fabric is connected to the first basket frame 60 and the second basket frame 70 to form a basket. The opening of the basket faces upward. The size of the opening of the basket can be changed by changing the rotation angle of the second pivot 20.
[0109] To improve the reliability of the pivot connection, there are two pivot connection devices 10. The first basket rack 60 can be generally U-shaped, with its two ends connected to the second pivot members 20 of different pivot connection devices 10. The first pivot members 10 of different pivot connection devices 10 are fixed to the frame 30, and the pivot connection holes 11 of different first pivot members 10 are arranged coaxially. When the first basket rack 60 and the pivot connection device 10 are made of materials with good rigidity, the pivot connection device 10 can be set on one side.
[0110] Optionally, the infant vehicle 100 also includes a seat for placing an infant, the seat being fixed to the frame 30. A basket is located under the seat.
[0111] The frame 30 has casters 50 at its bottom. The frame 30 includes casters 50 and a frame body. Multiple casters 50 are installed at the bottom of the frame body, specifically three or more, to facilitate movement. Taking four casters 50 as an example, the front caster 50 can be a swivel caster 50 with steering function, and the rear caster 50 can be a fixed caster 50 (without steering function), or both the front and rear casters 50 can be swivel casters 50. Both the swivel casters 50 and the fixed casters 50 can adopt relevant structures of existing technology, which will not be described in detail here.
[0112] Optionally, the first pivot member 10, the first basket rack 60, and the second pivot member 20 can be fixed with screws. Specifically, the second pivot member 20 is provided with a first connecting hole 216, and the first basket rack 60 is provided with a second connecting hole. One end of the screw passes through the first connecting hole 216 and the second connecting hole in sequence and is threadedly connected to the first pivot member 10. Alternatively, the first pivot member 10 is provided with a third connecting hole 15, and one end of the screw passes through the first connecting hole 216, the second connecting hole, and the third connecting hole 15 in sequence and is threadedly connected to the rack body.
[0113] Optionally, the second pivot member 20 has a receiving cavity 215 on the side facing the pivot connection hole 11. Along the radial direction of the pivot connection hole 11, the second pivot member 20 has a insertion hole 214 communicating with the receiving cavity 215. One end of the first vegetable basket rack 60 is inserted into the insertion hole 214. When the first vegetable basket rack 60 is rotated, the second pivot member 20 rotates together, thereby causing the second pivot member 20 to rotate relative to the first pivot member 10. In other examples, the second pivot member 20 and the first vegetable basket rack 60 can be fixed by screws, welding, or other methods, and the first pivot member 10 and the second pivot member 20 can be fixed by screws.
[0114] The infant carrier 100 includes all the technical features of the pivot connection device 10 in the above embodiments, and its function is the same as described above, so it will not be repeated here.
[0115] In some embodiments, please refer to Figure 6 The frame 30 includes a front frame 31 and a rear frame 32, the front frame 31 and the rear frame 32 are pivotally connected, and the pivot axis between the first pivot member 10 and the second pivot member 20 coincides with the pivot axis between the front frame 31 and the rear frame 32.
[0116] Optionally, the front frame 31 and the rear frame 32 have two pivot positions, with the pivot axes of the two pivot positions coinciding.
[0117] The axis of the pivoting connection device 10 coincides with the pivoting axes of the front and rear frames 32 of the frame 30, avoiding structural redundancy caused by the dispersed arrangement of multiple axes. This coaxial design allows the rotational motion trajectory of the frame 30 to be coordinated with the pivoting motion trajectory of the frame 30 itself when it is folded or unfolded, through the pivoting connection device 10, reducing the risk of spatial interference between components. Especially in products such as infant carriers 100, which have high requirements for compact space, it can significantly improve the overall structural layout rationality.
[0118] In some embodiments, please refer to Figure 6 The infant vehicle 100 also includes a push handle 40, which is connected to the frame 30.
[0119] The push handle 40 extends upward at an angle along the side away from the front frame 31, and its height is roughly the same as that of a human hand, so as to facilitate pushing and pulling the infant carrier 100 and save effort when pushing and pulling.
[0120] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
Claims
1. A pivoting connection device, characterized in that, include: The first pivot member has a pivot connection hole, and a plurality of slots are formed on the inner peripheral surface of the pivot connection hole. The slots extend along the axial direction of the pivot connection hole, and the plurality of slots are spaced apart along the circumferential direction of the pivot connection hole. The second pivot member has a body portion and a damping portion that pivotally engages with the pivot connection hole. The body portion has an abutment surface that abuts against the end of the pivot connection hole. The abutment surface is provided with the damping portion. A locking protrusion is formed on the surface of the damping portion facing the inner wall of the pivot connection hole. The locking protrusion extends axially along the pivot connection hole. During the rotation of the second pivot member relative to the first pivot member, the locking protrusion is configured to move into or out of the locking groove along the circumferential direction of the pivot connection hole. When the snap-fit protrusion moves out of the slot, the wall of the slot presses against the snap-fit protrusion, causing the damping part to undergo elastic deformation.
2. The pivoting connection device according to claim 1, characterized in that, The inner circumferential surface of the pivot connection hole is formed with a plurality of limiting protrusions, which are arranged circumferentially along the pivot connection hole, and the slot is formed between two connected limiting protrusions.
3. The pivoting connection device according to claim 2, characterized in that, The number of the snap-fit protrusions is multiple, and at least a portion of the snap-fit protrusions are configured to correspond one-to-one with the corresponding number of the snap-fit slots for limiting engagement along the circumferential direction of the pivot connection hole.
4. The pivoting connection device according to claim 3, characterized in that, The slots are in multiple sets, and each set contains multiple slots. The damping parts are also multiple. Each set of slots corresponds to a snap-fit protrusion in each damping part. Along the circumference of the pivot connection hole, the minimum distance between the two outermost slots in each set is greater than the minimum distance between the two outermost snap-fit protrusions in the corresponding damping parts.
5. The pivoting connection device according to claim 2, characterized in that, The limiting protrusion includes two first guide surfaces arranged circumferentially opposite each other along the pivot connection hole; The first guide surface is either a convex or concave curved surface extending axially along the pivot connection hole. In the cross-section of the same limiting protrusion, the tangent at any point on the first curved surface forms an angle with the protruding direction of the limiting protrusion, and the cross-section is perpendicular to the axis of the pivot connection hole. Alternatively, the first guide surface is a plane, and in the same limiting protrusion, the first guide surface is set at an angle to the protrusion direction of the limiting protrusion.
6. The pivoting connection device according to claim 2, characterized in that, The snap-fit protrusion includes two second guide surfaces arranged circumferentially opposite each other along the pivot connection hole; The second guide surface is an outwardly convex curved surface or an inwardly concave second curved surface extending along the axial direction of the pivot connection hole. In the cross section of the snap-fit protrusion, the tangent at any point of the second curved surface is set at an angle to the protruding direction of the snap-fit protrusion, and the cross section is perpendicular to the axis of the pivot connection hole. Alternatively, the second guide surface is a plane, and the second guide surface is set at an angle to the protrusion direction of the snap-fit protrusion.
7. The pivoting connection device according to any one of claims 1-6, characterized in that, The number of damping parts is multiple, and the multiple damping parts are spaced apart along the circumference of the pivot connection hole.
8. The pivoting connection device according to claim 6, characterized in that, A first limiting portion is formed on the inner circumferential surface of the pivot connection hole. The first limiting portion is provided between two adjacent damping portions. The abutment surface is provided with a second limiting portion. Along the circumferential direction of the pivot connection hole, the second limiting portion has a first end and a second end facing away from each other. At least one of the first end and the second end is spaced apart from the first limiting portion along the circumferential direction of the pivot connection hole.
9. The pivoting connection device according to claim 8, characterized in that, The number of the first limiting parts is two, and the two first limiting parts are arranged opposite to each other. Along the circumference of the pivot connection hole, at least one side of each first limiting part is provided with a second limiting part.
10. The pivoting connection device according to claim 8, characterized in that, The contact surface is provided with at least two positioning parts, which are arranged at intervals along the circumference of the pivot connection hole, and the positioning parts are positioned and engaged with the inner circumferential surface of the pivot connection hole.
11. The pivoting connection device according to claim 10, characterized in that, The number of the positioning part and the second limiting part are equal, and the positioning part and the second limiting part are integrally formed; and / or, the positioning part is an arc-shaped structure extending circumferentially along the pivot connection hole.
12. The pivoting connection device according to any one of claims 1-6, characterized in that, The damping part is a sheet-like structure extending circumferentially along the pivot connection hole.
13. An infant carrier, characterized in that, include: Frame; The pivoting connection device as described in any one of claims 1-12, wherein the first pivoting member is fixed to the vehicle frame; The first basket frame is connected to the second pivot.
14. The infant carrier according to claim 13, characterized in that, The vehicle frame includes a front frame and a rear frame, the front frame and the rear frame are pivotally connected, and the pivot axis between the first pivot member and the second pivot member coincides with the pivot axis between the front frame and the rear frame.