Connecting structure and children product

Abstract

The utility model relates to the technical field of children products, and discloses a connecting structure and a children product. The children product comprises a connecting structure, the connecting structure comprises a first assembly, a second assembly and a locking assembly, the first assembly and the second assembly are movably connected and have an unfolded state and a folded state, the locking assembly comprises a first locking piece and a second locking piece which are connected, the first locking piece is arranged between the first assembly and the second assembly, and the second locking piece is arranged between the first assembly and the second assembly. The second locking piece is arranged between the first locking piece and the first assembly; in the unfolded state, the first locking piece is matched with the first assembly and the second assembly so as to lock the first assembly and the second assembly. In the folding state, the first locking piece is separated from the first assembly, and the second locking piece is matched with the first assembly so as to lock the first assembly and the second assembly. The connecting structure is high in locking strength and good in locking reliability in an unfolded state.

Description

Technical Field

[0001] This utility model relates to the field of children's products technology, and in particular to a connecting structure and children's products. Background Technology

[0002] In existing technology, most strollers are foldable, with two connecting rods of the frame pivotally connected by a connecting structure. This connecting structure allows the two rods to be locked in either an unfolded or folded state. Under user operation, the connecting structure can be unlocked to allow the two rods to rotate relative to each other, switching between the unfolded and folded states. When the user is not operating the stroller, the connecting structure keeps the two rods locked in either the unfolded or folded state.

[0003] The connecting structure typically includes a first component, a second component, and a locking element. The first and second components are rotatable relative to each other and have an unfolded state and a folded state. The locking element is connected to the second component and can slide circumferentially relative to the second component. The sidewall of the first component has a first set of slots and a second set of slots. In the unfolded state, the locking element engages with the first set of slots to lock the first and second components; when unlocked, the locking element moves circumferentially and thus does not engage with either the first or second set of slots. In the folded state, the locking element engages with the second set of slots to lock the first and second components. In this existing connecting structure, the first component requires numerous machined slots at the same location, resulting in poor structural strength. Furthermore, in the unfolded state, the locking element has few mating surfaces with the first set of slots, leading to poor locking strength and reliability.

[0004] Therefore, there is an urgent need for a connection structure and children's products to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to propose a connection structure that has high locking strength and good locking reliability in the unfolded state.

[0006] Another objective of this invention is to provide a children's product that, by setting the above-mentioned connection structure, has high locking strength and good reliability in the unfolded state.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] Connection structure, including:

[0009] The first component and the second component are movably connected and have an unfolded state and a folded state;

[0010] A locking component includes a first locking member and a second locking member connected to each other, wherein the first locking member is disposed between the first component and the second component, and the second locking member is disposed between the first locking member and the first component;

[0011] In the unfolded state, the first locking member cooperates with the first component and the second component respectively to lock the first component and the second component;

[0012] In the folded state, the first locking member is separated from the first component, and the second locking member cooperates with the first component to lock the first component and the second component.

[0013] As an alternative, the first component has a first cover portion, the second component has a second cover portion, the first cover portion and the second cover portion are engaged and can rotate relative to each other to switch between the unfolded state and the folded state;

[0014] In the unfolded state, the first locking member engages with the inner circumferential surface of the first cover portion.

[0015] In the folded state, the first locking member is confined within the second cover portion, and the second locking member engages with the inner end face of the first component.

[0016] As an optional solution, a first mating part is provided on the inner circumferential surface of the first cover part, a second mating part is provided on the inner circumferential surface of the second cover part, and a third mating part is provided on the circumferential surface of the first locking member.

[0017] In the unfolded state, the first mating part and the second mating part are arranged facing each other along the axial direction, and the two ends of the third mating part along the axial direction are respectively inserted and mated with the first mating part and the second mating part;

[0018] During the process of switching to the folded state, the first locking member moves away from the first cover portion axially, so that the third mating portion separates from the first mating portion;

[0019] In the folded state, the third mating part abuts against the end face of the first cover part facing the second cover part.

[0020] As an optional solution, a fourth mating part is provided on the inner end face of the first cover part, and a fifth mating part is provided on the side of the second locking member facing the first component;

[0021] In the folded state, the fourth mating part and the fifth mating part are inserted into each other;

[0022] During the transition from the folded state to the unfolded state, the fourth mating part separates from the fifth mating part.

[0023] As an optional solution, one of the first cover portion and the second cover portion is provided with a central guide post, and the other is provided with a first central hole, the central guide post passing through the first central hole, and both the first locking member and the second locking member being sleeved on the central guide post; and / or

[0024] Of the first cover portion and the second cover portion, one is provided with a first limiting protrusion and the other is provided with a first guiding limiting groove. The first limiting protrusion extends into the first guiding limiting groove and can move within the first guiding limiting groove and abut against the end faces of both ends of the first guiding limiting groove in the circumferential direction.

[0025] As an alternative, in the unfolded state, the second locking member engages with the first component.

[0026] As an alternative, the first locking member and the second locking member are plugged into each other along the arrangement direction of the first component and the second component, and can slide relative to each other.

[0027] As an optional solution, the connection structure further includes:

[0028] A first elastic reset member is elastically pressed between the second component and the second locking member. The first elastic reset member is configured to drive the second locking member to move toward the first component to cooperate with the first component after the unfolded state is unlocked.

[0029] The second elastic reset member is elastically pressed between the second component and the first locking member. The second elastic reset member is configured to drive the first locking member to move toward the first component to cooperate with the first component after the folded state is unlocked.

[0030] As an optional solution, the connection structure also includes an unlocking member disposed between the second locking member and the first cover portion, wherein:

[0031] The unlocking component can move axially under the action of external force and push the first locking component and the second locking component to separate axially from the first component, so as to unlock the unfolded state;

[0032] The unlocking component can move along the axial direction under the action of external force, and push the second locking component to separate from the first component along the axial direction, so as to unlock the folded state.

[0033] As an optional solution, the unlocking component can rotate relative to the first cover portion, and when an external force drives the unlocking component to rotate, the unlocking component moves axially;

[0034] One of the inner end face of the first cover and the unlocking member is provided with a first guide protrusion, and the other is provided with a wedge-shaped groove. The first guide protrusion is inserted into the wedge-shaped groove. When the unlocking member is driven to rotate, the first guide protrusion slides along the wedge-shaped groove so that the unlocking member moves away from the first cover in the axial direction.

[0035] As an optional solution, a second limiting protrusion is provided on the inner end face of the first cover portion, and a second guide limiting groove is provided on the unlocking component. The second limiting protrusion extends into the second guide limiting groove, and the second limiting protrusion can move along the second guide limiting groove and abut against the end faces of the two ends of the second guide limiting groove in the circumferential direction.

[0036] As an alternative, the second locking member is provided with a first clearance groove on the side facing the unlocking member, and the second limiting protrusion extends into the first clearance groove when in the folded state or the unfolded state.

[0037] As an alternative, the second locking member has a groove on the side facing the unlocking member, the unlocking member is inserted into the groove and can rotate within the groove.

[0038] Children's products, including the aforementioned connecting structure.

[0039] As an alternative, the children's product is a stroller, which includes a first rod and a second rod that are rotatably connected, the first rod being connected to a first component and the second rod being connected to a second component.

[0040] Connection structure, including:

[0041] The first component and the second component are interconnected and have folded and unfolded states;

[0042] A locking component is disposed between the first component and the second component and is actively connected to the second component;

[0043] In the unfolded state, the locking components engage with the first mating surfaces of the first component to lock the first component and the second component.

[0044] In the folded state, the locking component engages with the second mating surface of the first component to lock the first component and the second component.

[0045] As an alternative, the first component has a first cover portion, the second component has a second cover portion, the first cover portion and the second cover portion are engaged and can rotate relative to each other to switch between the unfolded state and the folded state;

[0046] The first mating surface is the inner circumferential surface of the first cover portion, and the second mating surface is the inner end surface of the first cover portion.

[0047] As an alternative, the locking component engages with the first mating surface in a concave-convex fit, and the locking component also engages with the second mating surface in a concave-convex fit.

[0048] Beneficial effects:

[0049] The connection structure of this utility model:

[0050] By setting the locking components as a first locking element and a second locking element, and having the first locking element and the second locking element cooperate with the first component in the folded state and the unfolded state respectively, the corresponding mating parts on the first component can be distributed in a way that not only avoids the mating parts of the first component being too concentrated and thus reducing the structural strength, but also allows for more space to be arranged for the mating area with the first locking element, given that the size of the first component is fixed, thereby improving the mating strength and locking reliability in the unfolded state.

[0051] Alternatively, the locking component can be made to engage with the first mating surface of the first component in the folded state and with the second mating surface of the first component in the unfolded state. This disperses the mating parts on the first component, which not only avoids the mating parts of the first component being too concentrated and reducing the structural strength, but also allows for more space to be arranged for the mating area with the first locking component, given that the size of the first component is fixed. This improves the mating strength and locking reliability in the unfolded state.

[0052] The children's products of this utility model, by setting the above-mentioned connection structure, not only have good structural strength of the components, but also have strong locking reliability in the unfolded state. Attached Figure Description

[0053] Figure 1 This is a cross-sectional view of the connection structure provided in a specific embodiment of this utility model in its unfolded state;

[0054] Figure 2 This is a cross-sectional view of the connection structure provided in a specific embodiment of this utility model when it is switched from an unfolded state to a folded state;

[0055] Figure 3 This is a cross-sectional view of the connection structure provided in a specific embodiment of this utility model in a folded state;

[0056] Figure 4 This is a schematic diagram of the structure of the first component provided in a specific embodiment of this utility model;

[0057] Figure 5 This is a schematic diagram of the structure of the second component provided in a specific embodiment of this utility model;

[0058] Figure 6 This is a schematic diagram of the structure of the unlocking component provided in a specific embodiment of this utility model;

[0059] Figure 7 This is a schematic diagram of the structure of the second locking member provided in a specific embodiment of the present invention from one view.

[0060] Figure 8 This is a structural schematic diagram of the second locking member provided in a specific embodiment of the present invention from another perspective;

[0061] Figure 9 This is a schematic diagram of the structure of the first locking member provided in a specific embodiment of the present invention from one view.

[0062] Figure 10 This is a structural schematic diagram of the first locking member provided in a specific embodiment of the present utility model from another perspective;

[0063] Figure 11 This is a top view of the connection structure in a folded state after the second component is hidden, according to a specific embodiment of this utility model.

[0064] In the picture:

[0065] 10. First component; 11. First cover portion; 111. First mating portion; 112. Fourth mating portion; 113. First guide protrusion; 114. Second limiting protrusion; 115. First guide limiting groove; 116. First center hole; 12. First connecting portion;

[0066] 20. Second component; 21. Second cover part; 211. Second mating part; 212. First limiting protrusion; 213. Limiting guide post; 214. Central guide post; 22. Second connecting part;

[0067] 30. First locking element; 31. Third mating part; 32. Insertion hole; 33. Second clearance groove; 34. Second limiting groove; 35. Fourth center hole;

[0068] 40. Second locking element; 41. Fifth mating part; 42. Insertion protrusion; 43. First clearance groove; 44. First limiting groove; 45. Third center hole; 46. Countersunk groove;

[0069] 50. Second elastic reset element;

[0070] 60. First elastic reset component;

[0071] 70. Unlocking component; 71. Wedge-shaped groove; 72. Second guide limiting groove; 73. Second center hole; 74. Mounting hole. Detailed Implementation

[0072] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0073] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0074] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0075] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0076] This embodiment provides a connection structure, such as Figures 1-3As shown, the connection structure includes a first component 10, a second component 20, a locking component, and an unlocking component 70. The first component 10 and the second component 20 are connected and can move relative to each other, thus having an unfolded state and a folded state. It should be noted that the unfolded state and the folded state represent two different relative positions between the first component 10 and the second component 20, respectively. The locking component is disposed between the first component 10 and the second component 20 and is used to lock the first component 10 and the second component 20 in either the unfolded state or the folded state. The unlocking component 70 is disposed between the locking component and the first component 10 and is operated by the user. When the unlocking component 70 is operated by the user, it can trigger the locking component, thereby unlocking the connection structure from either the unfolded state or the folded state.

[0077] In this embodiment, the locking assembly includes a first locking member 30 and a second locking member 40, which are movably connected. The first locking member 30 is disposed between the first component 10 and the second component 20, and the second locking member 40 is disposed between the first locking member 30 and the first component 10. In the unfolded state, the first locking member 30 engages with both the first component 10 and the second component 20 to lock them. In the folded state, the first locking member 30 is separated from the first component 10 but remains engaged with the second component 20, while the second locking member 40 engages with the first component 10 to lock both components.

[0078] The connection structure of this embodiment uses a locking component, namely a first locking member 30 and a second locking member 40. In the folded state and the unfolded state, the first locking member 30 and the second locking member 40 cooperate with the first component 10, respectively. This facilitates the distribution of the corresponding mating parts on the first component 10. This not only avoids the mating parts of the first component 10 from being too concentrated and reducing the structural strength, but also allows for more space to be arranged for the mating area with the first locking member 30, given that the size of the first component 10 is fixed. This improves the mating strength and locking reliability in the unfolded state.

[0079] In this embodiment, as Figure 1 As shown, in the unfolded state, the second locking member 40 also engages with the first component 10. That is, in the unfolded state, the first locking member 30 and the second locking member 40 engage with different parts of the first component 10, thereby further improving the engagement strength and locking reliability of the connection structure in the unfolded state. In this embodiment, as... Figure 1 and Figure 3 As shown, in both the folded and unfolded states, the second locking member 40 engages with the same part of the first component 10 through the same part, thereby simplifying the connection structure and reducing manufacturing costs.

[0080] like Figure 4 and Figure 5 As shown, the first component 10 includes a first connecting portion 12 and a first cover portion 11, and the second component 20 includes a second connecting portion 22 and a second cover portion 21. The first connecting portion 12 and the second connecting portion 22 are respectively used to connect with an external structure to be folded or unfolded (such as two rods). The first cover portion 11 and the second cover portion 21 are connected, with the first cover portion 11 open towards the side facing the second component 20 and the second cover portion 21 open towards the side facing the first component 10. That is, the first cover portion 11 and the second cover portion 21 enclose a receiving space, and the unlocking member 70 and the locking member are disposed within this receiving space. When the first cover portion 11 and the second cover portion 21 move relative to each other, the external structure (such as a rod) connected to the first connecting portion 12 and the external structure (such as another rod) connected to the second connecting portion 22 move relative to each other to fold or unfold.

[0081] In this embodiment, the first cover portion 11 and the second cover portion 21 can rotate relative to each other, thereby allowing the first component 10 and the second component 20 to switch between a folded state and an unfolded state. Specifically, of the first cover portion 11 and the second cover portion 21, one is provided with a central guide post 214, and the other is provided with a first central hole 116. The central guide post 214 passes through the first central hole 116, thereby allowing the first component 10 and the second component 20 to rotate relative to each other around the axis of the central guide post 214. In this embodiment, both the first cover portion 11 and the second cover portion 21 are generally circular. The first central hole 116 is formed on the first cover portion 11, and the central guide post 214 is disposed inside the second cover portion 21. Optionally, the central guide post 214 is integrally formed with the first cover portion 11, or the central guide post 214 can be fixedly connected to the first cover portion 11 by a fastener.

[0082] like Figure 4 and Figure 5As shown, of the first cover portion 11 and the second cover portion 21, one is provided with a first limiting protrusion 212, and the other is provided with a first guiding limiting groove 115. The first limiting protrusion 212 extends into the first guiding limiting groove 115 and can move within the first guiding limiting groove 115, abutting against the end faces of both ends of the first guiding limiting groove 115 in the circumferential direction. When the first limiting protrusion 212 abuts against the end face of one end of the first guiding limiting groove 115 in the circumferential direction, the first component 10 and the second component 20 are in a folded state. When the first limiting protrusion 212 abuts against the end face of the other end of the first guiding limiting groove 115 in the circumferential direction, the first component 10 and the second component 20 are in an unfolded state. In this embodiment, the first guiding limiting groove 115 is provided on the first component 10, and the first limiting protrusion 212 is provided on the second component 20. The cross-section of the first limiting protrusion 212 is approximately fan-shaped, thereby enabling the first limiting protrusion 212 and the first guide limiting groove 115 to have higher fitting accuracy, thus guiding the relative rotation of the first component 10 and the second component 20. Figure 10 As shown, the first locking member 30 is also provided with a second clearance groove 33, which is used to avoid the first limiting protrusion 212. Specifically, the first limiting protrusion 212 passes through the second clearance groove 33 and then cooperates with the first guide limiting groove 115.

[0083] In this embodiment, the unlocking member 70, the first locking member 30, and the second locking member 40 are all sleeved on the central guide post 214. That is, the unlocking member 70, the first locking member 30, and the second locking member 40 can all move circumferentially along the central guide post 214. Specifically, as shown... Figure 6 As shown, the unlocking component 70 is generally constructed as a disc, and it has a second central hole 73, which is fitted onto the central guide post 214. Figure 7 As shown, the second locking member 40 is generally constructed as a disc, and has a third central hole 45, which is fitted onto the central guide post 214. Figure 8 As shown, the first locking member 30 is generally constructed as a disc structure, and a fourth central hole 35 is provided on it. The fourth central hole 35 is sleeved on the central guide post 214.

[0084] When using the connection structure of this embodiment:

[0085] Figure 1 The first locking member 30 cooperates with the first component 10 and the second component 20, that is, the first component 10 and the second component 20 are locked in the unfolded state, such as... Figure 2As shown, when the user operates the unlocking component 70, the unlocking component 70 moves along the axial direction of the central guide post 214 and toward the second component 20 under the action of external force, pushing the first locking component 30 and the second locking component 40, causing the first locking component 30 and the second locking component 40 to separate axially from the first component 10, thereby unlocking the unfolded state. At this time, the user can switch the first component 10 and the second component 20 to the following positions: Figure 3 The folded state shown.

[0086] Specifically, such as Figure 2 As shown, the connection structure also includes a first elastic reset member 60, which elastically presses against the second component 20 and the second locking member 40. When the second locking member 40 approaches the second component 20 axially, the first elastic reset member 60 is compressed and stores elastic potential energy. When in the unlocked and unfolded state, the user no longer applies force to the unlocking member 70, and the first elastic reset member 60 releases its elastic potential energy, driving the second locking member 40 and the unlocking member 70 to move towards the first component 10, causing the second locking member 40 to engage with the first component 10, thereby locking the first component 10 and the second component 20 in a locked position. Figure 3 The device is in the folded state shown, while the unlocking component 70 is reset to the position that mates with the first component 10.

[0087] In this embodiment, the first elastic reset member 60 can be a spring. Optionally, the number of first elastic reset members 60 can be one, two, or more, and this is not limited here. Figure 3 and Figure 5 As shown, the second component 20 is provided with a limiting guide post 213, and the first elastic reset member 60 is sleeved on the limiting guide post 213, thereby limiting the deformation direction of the second elastic reset member 50 and ensuring that it can accurately reset the second locking member 40. Figure 3 and Figure 8 As shown, the second locking member 40 is provided with a first limiting groove 44 on the side facing the second component 20, and the first elastic member extends into the first limiting groove 44. The first limiting groove 44 can ensure that the first elastic member reliably contacts the second locking member 40.

[0088] exist Figure 3 In the folded state shown, when the user operates the unlocking component 70 again, the unlocking component 70, under the action of external force, still moves along the axial direction of the central guide post 214 and toward the second component 20, pushing the second locking component 40 to separate axially from the first component 10, thereby unlocking the folded state. At this time, the user can switch the first component 10 and the second component 20 to the position shown. Figure 1 The unfolded state shown.

[0089] Specifically, such as Figure 3As shown, the connecting structure also includes a second elastic reset member 50, which elastically presses against the second component 20 and the first locking member 30. When the first locking member 30 approaches the second component 20 axially, the second elastic reset member 50 is compressed and stores elastic potential energy. When the folded state is unlocked, the user no longer applies force to the unlocking member 70, and the second elastic reset member 50 releases its elastic potential energy, driving the first locking member 30, the second locking member 40, and the unlocking member 70 to move together toward the first component 10, so that the first unlocking member 70 engages with the first component 10, thereby locking the first component 10 and the second component 20 in a locked position. Figure 1 The device is in the unfolded state shown, while the unlocking component 70 is reset to the position that mates with the first component 10.

[0090] In this embodiment, the second elastic reset member 50 can be a spring. For example... Figure 1 and Figure 5 As shown, the second elastic reset member 50 is sleeved on the central guide post 214. The central guide post 214 can guide the deformation direction of the second elastic reset member 50, ensuring that the locking component and the unlocking component 70 are accurately reset. Figure 3 and Figure 10 As shown, the first locking member 30 is provided with a second limiting groove 34 on the side facing the second component 20, and the second elastic reset member 50 extends into the first limiting groove 44. The setting of the second limiting groove 34 can limit the deformation of the second elastic reset member 50 and ensure that the second elastic reset member 50 reliably contacts the first locking member 30.

[0091] like Figure 1 , Figure 4 and Figure 6 As shown, the unlocking member 70 can rotate relative to the first cover portion 11. When an external force drives the unlocking member 70 to rotate, the unlocking member 70 moves axially, thereby unlocking. In some embodiments, the unlocking member 70 can be directly operated to unlock; in some embodiments, an unlocking operating member is also provided. The unlocking operating member is located at another position on the vehicle and is directly connected to the unlocking member 70 or connected through a traction assembly. Operating the unlocking operating member causes the unlocking member 70 to move, thereby unlocking. Specifically, the unlocking member 70 is provided with a mounting hole 74, and the unlocking operating member is a traction rope. The end of the traction rope can be fixed in the mounting hole 74. When the user pulls the traction rope, the traction rope drives the unlocking member 70 to rotate. Under the action of the cooperation structure with the first component 10, the unlocking member 70 moves axially away from the first component 10.

[0092] Specifically, a first guide protrusion 113 is provided on the inner end face of the first cover portion 11, and a wedge-shaped groove 71 is provided on the unlocking member 70. The first guide protrusion 113 is inserted into the wedge-shaped groove 71. When the unlocking member 70 is driven to rotate, the first guide protrusion 113 slides along the wedge-shaped surface of the wedge-shaped groove 71 to make the unlocking member 70 move away from the first cover portion 11 axially. In this embodiment, three first guide protrusions 113 are provided on the first cover portion 11, and correspondingly, three wedge-shaped grooves 71 are provided on the unlocking member 70, with each first guide protrusion 113 corresponding to one wedge-shaped groove 71. In other embodiments, the specific number of first guide protrusions 113 and wedge-shaped grooves 71 can be flexibly set. In some embodiments, the first guide protrusion 113 can also be provided on the unlocking member 70, and the wedge-shaped grooves 71 can be provided on the first component 10.

[0093] like Figure 4 and Figure 6 As shown, a second limiting protrusion 114 is provided on the inner end face of the first cover portion 11, and a second guide limiting groove 72 is provided on the unlocking member 70. The second limiting protrusion 114 extends into the second guide limiting groove 72 and can move along the second guide limiting groove 72 and abut against the end faces of the two ends of the second guide limiting groove 72 in the circumferential direction. When the unlocking member 70 is engaged with the first component 10, the second limiting protrusion 114 abuts against the end face of the second guide limiting groove 72 at one end in the circumferential direction. When the user drives the unlocking member 70 to rotate, the second limiting protrusion 114 moves along the second guide limiting groove 72. When the second limiting protrusion 114 abuts against the end face of the second guide limiting groove 72 at the other end in the axial direction, the unlocking member 70 cannot continue to rotate. In this embodiment, the rotation range of the unlocking member 70 is limited by the cooperation of the second limiting protrusion 114 and the second guiding limiting groove 72, ensuring that the first component 10 and the second component 20 can be unlocked smoothly from the folded state or the unfolded state. In this embodiment, two of each of the second limiting protrusion 114 and the second guiding limiting groove 72 are provided. In other embodiments, the number of the second limiting protrusion 114 and the second guiding limiting groove 72 is not specifically limited.

[0094] like Figure 7 As shown, the second locking member 40 has a first clearance groove 43 on the side facing the unlocking member 70. In the folded or unfolded state, the second limiting protrusion 114 extends into the first clearance groove 43. That is, by lengthening the second limiting protrusion 114 along the axial direction, in the unlocked folded or unlocked unfolded state, the unlocking member 70 moves away from the first component 10 along the axial direction. The lengthened second limiting protrusion 114 can ensure that it always cooperates with the second guide limiting groove 72 of the unlocking member 70, without increasing the axial dimension of the unlocking member 70, making the axial dimension of the entire connection structure compact.

[0095] like Figure 3 , Figure 6and Figure 7 As shown, the second locking member 40 has a recess 46 on the side facing the unlocking member 70. The unlocking member 70 is inserted into the recess 46 and can rotate within the recess 46. The recess 46 on the second locking member 40 can limit the rotation of the unlocking member 70 and prevent the rotation axis of the unlocking member 70 from deviating during rotation.

[0096] like Figure 4 and Figure 7 As shown, a fourth mating part 112 is provided on the inner end face of the first cover part 11, and a fifth mating part 41 is provided on the side of the second locking member 40 facing the first component 10. Figure 1 As shown, in the deployed state, the fourth mating part 112 and the fifth mating part 41 are inserted into each other, thereby ensuring high locking strength and good reliability in the deployed state. Figure 2 As shown, during the transition from the unfolded state to the folded state, the fourth mating part 112 separates from the fifth mating part 41, allowing the first component 10 and the second component 20 to be unlocked. Figure 3 As shown, in the folded state, the first elastic reset member 60 causes the fourth mating part 112 to re-engage with the fifth mating part 41, thereby locking the first component 10 and the second component 20 in the folded state. During the transition from the folded state to the unfolded state, the fourth mating part 112 and the fifth mating part 41 separate, thereby unlocking the folded state. In this embodiment, the fourth mating part 112 is a groove, and the fifth mating part 41 is a protrusion. In other embodiments, the fourth mating part 112 may be a protrusion, and the fifth mating part 41 may be a groove. Optionally, the number of fourth mating parts 112 and fifth mating parts 41 may be one, two, or more, and is not limited here.

[0097] like Figure 3 , Figure 7 and Figure 9 As shown, the first locking member 30 and the second locking member 40 are inserted and connected along the arrangement direction of the first component 10 and the second component 20, and can slide relative to each other. This ensures that the first locking member 30 and the second locking member 40 cannot rotate relative to each other, so as to lock the first component 10 and the second component 20 in the folded or unfolded state. It also ensures that the first locking member 30 and the second locking member 40 can move relative to each other in the axial direction, so that the first locking member 30 is separated from the first component 10 in the folded state, while the second locking member 40 is engaged with the first component 10.

[0098] Specifically, the second locking member 40 has a insertion protrusion 42 on the side facing the first locking member 30, and the first locking member 30 has a insertion hole 32 on the side facing the second locking member 40. The insertion protrusion 42 is inserted into the insertion hole 32. Optionally, the number of insertion protrusions 42 and insertion holes 32 can be one, two, or more, and no specific limitation is made here. In this embodiment, the number of insertion protrusions 42 is the same as the number of fifth mating parts 41, and each insertion protrusion 42 is axially connected to one fifth mating part 41, that is, the insertion protrusions 42 and the fifth mating parts 41 can form an integral structure, thereby reducing the processing difficulty of the second locking member 40. In this embodiment, as shown... Figure 8 As shown, the first limiting groove 44 for limiting the first elastic reset member 60 is opened on the bottom surface of the insertion protrusion 42. Since the insertion hole 32 that mates with the insertion protrusion 42 is a through hole, it ensures that the first elastic reset member 60 can pass through the first locking member 30 and extend into the first limiting groove 44 and mate with the second locking member 40.

[0099] like Figure 1 and Figure 9 As shown, in the unfolded state, the first locking member 30 engages with the inner peripheral surface of the first cover portion 11 (i.e., the first mating surface between the locking component and the first component 10), and the first locking member 30 also engages with the inner peripheral surface of the second cover portion 21, thereby locking the first component 10 and the second component 20 in the unfolded state. Simultaneously, the second locking member 40 engages with the inner end face of the first cover portion 11, making the locking in the unfolded state more reliable. Figure 3 and Figure 9 As shown, in the folded state, the first locking member 30 is confined within the second cover portion 21, and the second locking member 40 is in concave-convex fit with the inner end face of the first component 10 (i.e., the locking component is in concave-convex fit with the second mating surface of the first component 10). Since the first locking member 30 and the second locking member 40 are fixed together in the circumferential direction, the first component 10 and the second component 20 are locked in the folded state.

[0100] Specifically, such as Figure 4 As shown, a first mating part 111 is provided on the inner circumferential surface of the first cover part 11, such as... Figure 5 As shown, a second mating part 211 is provided on the inner circumferential surface of the second cover part 21, such as... Figure 9 As shown, a third mating part 31 is provided on the circumferential surface of the first locking member 30. (As indicated...) Figure 1As shown, in the unfolded state, the first mating part 111 and the second mating part 211 are axially aligned and face each other, and the two ends of the third mating part 31 are respectively inserted into the first mating part 111 and the second mating part 211 along the axial direction. During the switching to the folded state, the first locking member 30 moves axially away from the first cover part 11, causing the third mating part 31 to separate from the first mating part 111, that is, the first locking member 30 separates from the first component 10, thus unlocking the unfolded state. In the folded state, as... Figure 3 and Figure 11 As shown, the third mating part 31 abuts against the end face of the first cover part 11 facing the second cover part 21, and therefore does not mate with the first component 10. Therefore, only one set of structures that mate with the third mating part 31 needs to be machined on the inner circumferential surface (first mating surface) of the first cover part 11. Thus, when the size of the first cover part 11 is fixed, the number of mate structures in the first mating part 111 can be increased. Therefore, in the unfolded state, the third mating part 31 has more mate structures with the first mating part 111, resulting in higher locking strength and better reliability in the unfolded state.

[0101] In this embodiment, the first mating part 111 is composed of a plurality of first teeth, which are spaced apart along the inner circumferential surface of the first cover part 11, and a first slot is formed between adjacent first teeth. The second mating part 211 is composed of a plurality of second teeth, which are spaced apart along the inner circumferential surface of the second cover part 21, and a second slot is formed between adjacent second teeth. The third mating part 31 is composed of a plurality of third teeth, which are spaced apart along the circumferential surface of the first locking member 30. In the unfolded state, the plurality of first teeth and the plurality of second teeth correspond one-to-one, thereby making the plurality of first slots correspond one-to-one with the plurality of second slots, and the two ends of each third tooth are inserted into a first slot and a second slot respectively. In the folded state, as Figure 11 As shown, the first locking member 30 is fully retracted into the second cover portion 21. The first slot and the second slot are offset from each other, so the third tooth cannot be inserted into the first slot on the corresponding side and abuts against the end face of the first cover portion 11 facing the second component 20.

[0102] This embodiment also provides a children's product, which includes the aforementioned connecting structure. In this embodiment, the children's product is a stroller. The stroller includes a first rod and a second rod that can be unfolded and folded. The first rod is connected to the first connecting portion 12 of the first component 10, and the second rod is connected to the second connecting portion 22 of the second component 20. The connecting structure can realize the unfolding and folding actions of the first and second rods, and lock the first and second rods in the unfolded or folded state. Optionally, the first and second rods can be two adjacent rods in the push rod of the stroller. The first and second rods can be adjacent rods in the stroller frame and push rod, respectively. The first and second rods can also be two adjacent rods in the frame.

[0103] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. For those skilled in the art, based on the concept of this utility model, there will be changes in the specific implementation methods and application scope. The content of this specification should not be construed as a limitation of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A connection structure, characterized in that, include: The first component and the second component are movably connected and have an unfolded state and a folded state; A locking component includes a first locking member and a second locking member connected to each other, wherein the first locking member is disposed between the first component and the second component, and the second locking member is disposed between the first locking member and the first component; In the unfolded state, the first locking member cooperates with the first component and the second component respectively to lock the first component and the second component; In the folded state, the first locking member is separated from the first component, and the second locking member cooperates with the first component to lock the first component and the second component.

2. The connection structure as described in claim 1, characterized in that, The first component has a first cover portion, and the second component has a second cover portion. The first cover portion and the second cover portion are engaged and can rotate relative to each other to switch between the unfolded state and the folded state. In the unfolded state, the first locking member engages with the inner circumferential surface of the first cover portion. In the folded state, the first locking member is confined within the second cover portion, and the second locking member engages with the inner end face of the first component.

3. The connection structure as described in claim 2, characterized in that, A first mating part is provided on the inner circumferential surface of the first cover part, a second mating part is provided on the inner circumferential surface of the second cover part, and a third mating part is provided on the circumferential surface of the first locking member. In the unfolded state, the first mating part and the second mating part are arranged facing each other along the axial direction, and the two ends of the third mating part along the axial direction are respectively inserted and mated with the first mating part and the second mating part; During the process of switching to the folded state, the first locking member moves away from the first cover portion axially, so that the third mating portion separates from the first mating portion; In the folded state, the third mating part abuts against the end face of the first cover part facing the second cover part; A fourth mating part is provided on the inner end face of the first cover part, and a fifth mating part is provided on the side of the second locking member facing the first component; In the folded state, the fourth mating part and the fifth mating part are inserted into each other; During the transition from the folded state to the unfolded state, the fourth mating part separates from the fifth mating part.

4. The connection structure as described in claim 2, characterized in that, Of the first cover portion and the second cover portion, one is provided with a central guide post, and the other is provided with a first central hole. The central guide post passes through the first central hole, and both the first locking member and the second locking member are sleeved on the central guide post; and / or Of the first cover portion and the second cover portion, one is provided with a first limiting protrusion and the other is provided with a first guiding limiting groove. The first limiting protrusion extends into the first guiding limiting groove and can move within the first guiding limiting groove and abut against the end faces of both ends of the first guiding limiting groove in the circumferential direction.

5. The connection structure as described in any one of claims 1-4, characterized in that, In the unfolded state, the second locking member engages with the first component.

6. The connection structure as described in any one of claims 1-4, characterized in that, The first locking member and the second locking member are plugged into each other along the arrangement direction of the first component and the second component, and can slide relative to each other.

7. The connection structure as described in any one of claims 1-4, characterized in that, The connection structure further includes: A first elastic reset member is elastically pressed between the second component and the second locking member. The first elastic reset member is configured to drive the second locking member to move toward the first component to cooperate with the first component after the unfolded state is unlocked. The second elastic reset member is elastically pressed between the second component and the first locking member. The second elastic reset member is configured to drive the first locking member to move toward the first component to cooperate with the first component after the folded state is unlocked.

8. The connection structure as described in any one of claims 2-4, characterized in that, Therefore, the connection structure also includes an unlocking member disposed between the second locking member and the first cover portion, wherein: The unlocking component can move axially under the action of external force and push the first locking component and the second locking component to separate axially from the first component, so as to unlock the unfolded state; The unlocking component can move along the axial direction under the action of external force, and push the second locking component to separate from the first component along the axial direction, so as to unlock the folded state.

9. The connection structure as described in claim 8, characterized in that, The unlocking component can rotate relative to the first cover portion. When an external force drives the unlocking component to rotate, the unlocking component moves along the axial direction. One of the inner end face of the first cover and the unlocking member is provided with a first guide protrusion, and the other is provided with a wedge-shaped groove. The first guide protrusion is inserted into the wedge-shaped groove. When the unlocking member is driven to rotate, the first guide protrusion slides along the wedge-shaped groove so that the unlocking member moves away from the first cover in the axial direction. A second limiting protrusion is provided on the inner end face of the first cover part, and a second guide limiting groove is provided on the unlocking member. The second limiting protrusion extends into the second guide limiting groove, and the second limiting protrusion can move along the second guide limiting groove and abut against the end faces of both ends of the second guide limiting groove in the circumferential direction. The second locking member is provided with a first clearance groove on the side facing the unlocking member. When in the folded state or the unfolded state, the second limiting protrusion extends into the first clearance groove. The second locking member has a groove on the side facing the unlocking member, the unlocking member is inserted into the groove and can rotate within the groove.

10. A children's product, characterized in that, Includes the connection structure described in any one of claims 1-9.

11. The children's product as described in claim 10, characterized in that, The children's product is a stroller, which includes a first rod and a second rod that are rotatably connected. The first rod is connected to the first component, and the second rod is connected to the second component.

12. A connection structure, characterized in that, include: The first component and the second component are interconnected and have folded and unfolded states; A locking component is disposed between the first component and the second component and is actively connected to the second component; In the unfolded state, the locking component engages with the first mating surface of the first component to lock the first component and the second component; In the folded state, the locking component engages with the second mating surface of the first component to lock the first component and the second component.

13. The connection structure as described in claim 12, characterized in that, The first component has a first cover portion, and the second component has a second cover portion. The first cover portion and the second cover portion are engaged and can rotate relative to each other to switch between the unfolded state and the folded state. The first mating surface is the inner circumferential surface of the first cover portion, and the second mating surface is the inner end surface of the first cover portion.

14. The connection structure as described in claim 12, characterized in that, The locking component engages with the first mating surface in a concave-convex manner, and the locking component also engages with the second mating surface in a concave-convex manner.

Images