A stroller locking and unlocking structure
By locking the push handle, front bracket, and rear bracket of the trolley with a single locking mechanism, the problems of complex structure and high cost in the existing technology are solved, and the effects of simplifying production and reducing the risk of failure are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KUNSHAN BABYKISS CHILD PROD CO LTD
- Filing Date
- 2025-05-28
- Publication Date
- 2026-05-29
AI Technical Summary
In existing stroller designs, the use of two locking structures increases the number of parts, resulting in a complex structure, high production costs, and a high risk of failure.
A single locking mechanism is used to lock and unlock the push handle, front bracket, and rear bracket through connecting and unlocking parts, simplifying the structure and reducing costs.
This simplifies the structure, reduces the difficulty and cost of production and assembly, minimizes the risk of failure, and enhances product competitiveness.
Smart Images
Figure CN224297236U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of trolley technology, specifically to a trolley locking and unlocking structure. Background Technology
[0002] In daily life, strollers are widely used for baby transportation, carrying items, and other scenarios. Strollers typically consist of a handle, a front support, and a rear support. The folding and unfolding of the stroller is achieved by rotating these three components to meet different usage and storage needs.
[0003] Currently, to ensure the stability of the trolley during use and prevent accidental rotation between the handle, front support, and rear support, many trolleys employ locking mechanisms to secure these three components. A common locking method involves two sets of locking mechanisms: one set locks the handle to the front support, and the other locks the handle to the rear support.
[0004] However, this design with two locking mechanisms has obvious drawbacks. On the one hand, the two locking mechanisms increase the number of parts in the cart, making the overall structure more complex. This not only increases the difficulty and time cost of production and assembly, but also makes it prone to malfunctions due to the excessive number of parts. On the other hand, more parts mean higher material and processing costs, significantly increasing the manufacturing cost of the cart and reducing the product's competitiveness in the market.
[0005] Therefore, how to overcome the shortcomings of the existing technology mentioned above has become the subject of this utility model. Utility Model Content
[0006] The purpose of this invention is to provide a trolley locking and unlocking structure.
[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0008] A trolley locking and unlocking structure includes a push handle, a front bracket, and a rear bracket that are rotatably arranged with respect to each other;
[0009] Also includes:
[0010] A connector, the two ends of which are rotatably mounted on the front bracket and the rear bracket, respectively;
[0011] A locking mechanism is provided in part on either the front bracket or the rear bracket, and in part on the push handle, serving as a mechanism for locking either the front bracket or the rear bracket and the push handle.
[0012] Unlocking component, as a part used to unlock the locking mechanism.
[0013] The front bracket is described in the following description. The push handle and rear bracket are described in the same way. The front bracket can be understood as a bracket assembly. It may only include the bracket structure or it may include the bracket structure and the roller structure. The shape of the bracket structure is not limited. For one specific configuration of the front bracket, please refer to the attached figure.
[0014] The push handle, front bracket, and rear bracket are existing structures, and their specific functions can be referenced from the existing ones.
[0015] In the above solution, the locking mechanism can first lock the push handle to restrict its folding and storage during use. Secondly, the locking mechanism can directly lock either the front bracket or the rear bracket. With the help of the first connecting piece, once one of the front bracket and the rear bracket is locked, the other is also locked. This avoids the need to set up two locking mechanisms to lock the front bracket and the rear bracket, thereby simplifying the structure and reducing costs.
[0016] The unlocking component is used to unlock the locking mechanism. Under the action of external force, the unlocking component can cause the locking mechanism to change from the locked state to the unlocked state. For example, if the trolley contains a backrest, the rotation of the backrest can be used to move the unlocking component to unlock the locking mechanism. This application does not limit this.
[0017] The exact location of the unlocking component is not specified here; as long as it serves the purpose of unlocking, that's sufficient.
[0018] In a further technical solution, the locking mechanism includes a first docking member and a second docking member;
[0019] The first docking member is movably disposed on either the front bracket or the rear bracket, and the second docking member is fixedly disposed on the push handle; or, the first docking member is fixedly disposed on either the front bracket or the rear bracket, and the second docking member is movably disposed on the push handle.
[0020] The locking mechanism is in a locked state:
[0021] In the locked state, the first docking member engages with the second docking member to lock either the front bracket or the rear bracket and the push handle.
[0022] When the locking mechanism is in the locked state, it locks either the front bracket or the rear bracket and the push handle, which is achieved by the first docking part and the second docking part docking.
[0023] This embodiment involves various variations, such as the first docking member being located on the front support or the rear support, or the first docking member being fixedly located on the front support or movable on the front support. By providing a variety of options, it meets the diverse needs of users.
[0024] In a further technical solution, the first docking member is movably disposed on the rear bracket, and the second docking member is fixedly disposed on the push handle;
[0025] The push handle has a groove, which constitutes the second docking part.
[0026] Here, we will use the first connecting piece as the connecting rod for explanation. The connecting rod is connected to the rear bracket. When the connecting rod is inserted into the groove, the rear bracket and the push handle cannot rotate relative to each other, thus restricting each other and locking the rear bracket and the push handle.
[0027] In some embodiments, the first docking member is movably positioned on the front support.
[0028] This embodiment clarifies a method for locking mechanism to achieve locking under certain circumstances, which has a simple structure and quick locking.
[0029] The first mating part is inserted into the groove, meaning that at least a portion of the first mating part is inserted into the groove.
[0030] After the first mating component is inserted into the groove, it can move along the thickness direction of the rear support to separate from the groove, or it can move vertically to separate from the groove; this embodiment does not limit this. The shape of the groove can be adjusted adaptively according to different separation conditions; this embodiment also does not limit this.
[0031] A further technical solution also includes a reset component, which acts on at least the first docking component or the second docking component as a component for causing the first docking component and the second docking component to reset and dock.
[0032] In some implementations, the reset element is a reset spring, such as a compression spring.
[0033] The reset component causes the first docking component and the second docking component to reset and dock after separation, thereby automatically locking the corresponding structure by the locking mechanism during the use of the trolley and reducing the amount of operation required by the user.
[0034] The specific connection settings of the reset component can be adjusted according to the actual situation to achieve the above purpose. For example, the two ends of the reset component can be connected to the first mating component and the second mating component respectively.
[0035] In a further technical solution, the unlocking component includes a horizontally moving part and a vertically moving part;
[0036] The horizontally moving part is provided with a first inclined surface;
[0037] The vertically moving part is provided with a second inclined surface corresponding to the first inclined surface;
[0038] The unlocking component is in an unlocked state:
[0039] In the unlocked state, the horizontal moving part moves in the horizontal direction, causing the first inclined surface and the second inclined surface to interact, which in turn causes the vertical moving part to move in the vertical direction, thereby realizing the separation and unlocking of the first docking member and the second docking member.
[0040] The vertical moving part can be located on the push handle, the front bracket, or the rear bracket; this embodiment does not impose any restrictions on this, as long as it meets the requirements of this embodiment. The same applies to the horizontal moving part.
[0041] To aid understanding, consider the following specific scenario: The aforementioned backrest is designed with corresponding inclined surfaces on both the backrest and the horizontal moving part. When storing the trolley, rotating the backrest causes the horizontal moving part to translate (e.g., along the thickness of the rear frame) through the interaction of the two inclined surfaces. Then, the first inclined surface presses against the second inclined surface, causing the horizontal moving part to push the vertical moving part downwards. The vertical moving part then causes the first connecting piece to move downwards and separate from the second connecting piece. In this case, the reset component prevents the first connecting piece from separating from the second connecting piece due to gravity.
[0042] With the configuration of this embodiment, when the first docking member and the second docking member are separated, one of them can be moved vertically. Taking the first docking member being moved into the rear support as an example, the first docking member does not need to move along the thickness direction of the rear support, thus reducing the space occupied by the first docking member in the thickness direction of the rear support.
[0043] The terms "first," "second," etc., used in this article do not specifically refer to order or sequence, nor are they intended to limit this case; they are merely used to distinguish components or operations described using the same technical terms.
[0044] The terms "connection" or "positioning" as used in this article can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, or to two or more components or devices operating or moving with each other.
[0045] The terms “include,” “including,” and “have” used in this article are all open-ended, meaning they include but are not limited to.
[0046] Unless otherwise specified, the terms used herein generally have their ordinary meaning in the context of the art, the subject matter, and the specific context. Certain terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the case.
[0047] The terms “front,” “back,” “up,” “down,” “left,” and “right” used in this article are directional terms. In this case, they are only used to describe the positional relationship between the structures and are not intended to limit the specific direction of the protection scheme or its actual implementation.
[0048] The working principle and advantages of this utility model are as follows:
[0049] The locking mechanism can first lock the push handle to restrict its folding and storage during use. Secondly, the locking mechanism can directly lock either the front bracket or the rear bracket. Furthermore, with the help of the first connecting piece, once one of the front bracket or the rear bracket is locked, the other is also locked. This avoids the need to set up two locking mechanisms to lock the front bracket and the rear bracket, thereby simplifying the structure and reducing costs.
[0050] The unlocking mechanism can cause the locking mechanism to change from a locked state to an unlocked state under the action of external force. By unlocking the locking mechanism, the unlocking mechanism can simultaneously unlock the push handle, the front bracket, and the rear bracket, improving the unlocking speed and reducing the number of unlocking steps.
[0051] In summary, this application has a simple structure, which can reduce the difficulty, time cost and structural cost of production and assembly, avoid the risk of failure due to too many parts, and improve the competitiveness of the product in the market. Attached Figure Description
[0052] Figure 1 This is a schematic diagram of the trolley locking and unlocking structure when applied to a trolley, according to an embodiment of the present invention.
[0053] Figure 2 for Figure 1 A structural diagram from another perspective;
[0054] Figure 3 for Figure 1 Exploded view of a local structure.
[0055] In the above figures: 1. Push handle; 11. Groove; 2. Front bracket; 3. Rear bracket; 4. Connector; 5. Locking mechanism; 51. First docking part; 52. Second docking part; 6. Unlocking part; 61. Horizontal moving part; 611. First inclined surface; 62. Vertical moving part; 621. Second inclined surface; 7. Reset part. Detailed Implementation
[0056] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0057] Example: The present invention will be clearly described below with illustrations and detailed description. Any person skilled in the art who understands the examples of the present invention can make changes and modifications based on the technology taught in the present invention without departing from the spirit and scope of the present invention.
[0058] The terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the scope of this work. Singular forms such as “a,” “this,” “this,” “the,” and “the” as used herein also include plural forms.
[0059] See Figures 1-3 A trolley locking and unlocking structure includes a push handle 1, a front bracket 2 and a rear bracket 3 that are rotatably arranged with each other;
[0060] Also includes:
[0061] Connector 4, with its two ends rotatably mounted on the front bracket 2 and the rear bracket 3, respectively;
[0062] The locking mechanism 5 is partially located in either the front support 2 or the rear support 3, and partially located in the push handle 1, serving as a mechanism for locking either the front support 2 or the rear support 3 and the push handle 1.
[0063] Unlocking component 6 is a part used to unlock the locking mechanism 5.
[0064] The front bracket 2 is described in the following description. The push handle 1 and the rear bracket 3 are described in the same way. The front bracket 2 can be understood as a bracket assembly. It may only include the bracket structure or it may include the bracket structure and the roller structure. The shape of the bracket structure is not limited. For one specific configuration of the front bracket 2, please refer to the attached figure.
[0065] The push handle 1, front bracket 2 and rear bracket 3 are existing structures, and their specific functions can be referred to the existing ones.
[0066] In the above scheme, the locking mechanism 5 can first lock the push handle 1 to restrict its folding and storage during use. Secondly, the locking mechanism 5 can directly lock either the front bracket 2 or the rear bracket 3. With the help of the first connecting piece 4, once one of the front bracket 2 and the rear bracket 3 is locked, the other one is also locked. This avoids the need to set up two locking mechanisms 5 to lock the front bracket 2 and the rear bracket 3, thereby simplifying the structure and reducing costs.
[0067] The unlocking component 6 is used to unlock the locking mechanism 5. The unlocking component 6 can cause the locking mechanism 5 to change from the locked state to the unlocked state under the action of external force. For example, if the trolley contains a backrest, the unlocking component 6 can be moved to unlock the locking mechanism 5 by means of the rotation of the backrest. This application does not limit this.
[0068] The unlocking component 6 can unlock the locking mechanism 5, and simultaneously unlock the push handle 1, the front bracket 2 and the rear bracket 3, thereby increasing the unlocking speed and reducing the number of unlocking steps.
[0069] The exact location of unlocking component 6 is not specified here; as long as it serves the purpose of unlocking, it is acceptable.
[0070] In this embodiment, the locking mechanism 5 includes a first docking member 51 and a second docking member 52;
[0071] The first docking member 51 is movably disposed on either the front support 2 or the rear support 3 and the second docking member 52 is fixedly disposed on the push handle 1; or, the first docking member 51 is fixedly disposed on either the front support 2 or the rear support 3 and the second docking member 52 is movably disposed on the push handle 1.
[0072] The locking mechanism 5 is in a locked state:
[0073] In the locked state, the first docking member 51 docks with the second docking member 52 to lock either the front bracket 2 or the rear bracket 3 and the push handle 1.
[0074] When the locking mechanism 5 is in the locked state, it locks either the front bracket 2 or the rear bracket 3 and the push handle 1, which is achieved by the first docking part 51 docking with the second docking part 52.
[0075] This embodiment involves various variations, such as the first docking member 51 being located on the front bracket 2 or the rear bracket 3, or the first docking member 51 being fixedly located on the front bracket 2 or movable located on the front bracket 2. By providing a variety of options, it meets the diverse needs of users.
[0076] In this embodiment, the first docking member 51 is movably disposed on the rear bracket 3, and the second docking member 52 is fixedly disposed on the push handle 1;
[0077] The push handle 1 is provided with a groove 11, which constitutes the second docking member 52.
[0078] Here, we will use the first docking part 51 as the docking rod for explanation. The docking rod is connected to the rear bracket 3. When the docking rod is inserted into the groove 11, the rear bracket 3 and the push handle 1 cannot rotate relative to each other, thereby restricting each other and locking the rear bracket 3 and the push handle 1.
[0079] In some embodiments, the first docking member 51 is movably disposed on the front bracket 2.
[0080] This embodiment clarifies a method for locking mechanism 5 to achieve locking under certain circumstances. The structure is simple and the locking is quick.
[0081] The insertion groove 11 of the first mating member 51 means that at least a portion of the first mating member 51 is inserted into the groove 11.
[0082] After the first mating member 51 is inserted into the groove 11, it can move along the thickness direction of the rear support 3 to separate from the groove 11, or it can move vertically to separate from the groove 11. This embodiment does not limit this. The shape of the groove 11 can be adjusted adaptively according to different separation situations, and this embodiment does not limit this either.
[0083] In this embodiment, a reset member 7 is also included. The reset member 7 acts at least on the first docking member 51 or the second docking member 52, and serves as a component for causing the first docking member 51 and the second docking member 52 to reset and dock.
[0084] In some embodiments, the reset element 7 is a reset spring, such as a compression spring.
[0085] The reset component 7 causes the first docking component 51 and the second docking component 52 to reset and dock after separation, thereby automatically locking the corresponding structure by the locking mechanism 5 during the use of the trolley, reducing the amount of operation required by the user.
[0086] The specific connection settings of the reset component 7 can be adjusted according to the actual situation to achieve the above purpose. For example, the two ends of the reset component 7 can be connected to the first docking component 51 and the second docking component 52 respectively.
[0087] In this embodiment, the unlocking component 6 includes a horizontally moving part 61 and a vertically moving part 62;
[0088] The horizontally moving part 61 is provided with a first inclined surface 611;
[0089] The vertical moving part 62 is provided with a second inclined surface 621 corresponding to the first inclined surface 611;
[0090] The unlocking component 6 is in an unlocked state:
[0091] In the unlocked state, the horizontal moving part 61 moves in the horizontal direction, causing the first inclined surface 611 and the second inclined surface 621 to interact, causing the vertical moving part 62 to move in the vertical direction, thereby realizing the separation and unlocking of the first docking member 51 and the second docking member 52.
[0092] The vertical moving part 62 can be provided on the push handle 1, the front bracket 2, or the rear bracket 3. This embodiment does not limit this, as long as it meets the requirements of this embodiment. The same applies to the horizontal moving part 61.
[0093] To aid understanding, a specific scenario is provided below: As mentioned above, the backrest and the horizontal moving part 61 both have corresponding inclined surfaces. When storing the trolley, rotating the backrest causes the horizontal moving part 61 to translate (e.g., along the thickness direction of the rear frame) through the interaction of the two inclined surfaces. Then, the first inclined surface 611 presses against the second inclined surface 621, causing the horizontal moving part 61 to push the vertical moving part 62 downwards. The vertical moving part 62 then causes the first docking member 51 to move downwards and separate from the second docking member 52. In this case, the reset member 7 prevents the first docking member 51 from separating from the second docking member 52 due to gravity.
[0094] With the configuration of this embodiment, when the first docking member 51 and the second docking member 52 are separated, one of them can move vertically. Taking the first docking member 51 being moved into the rear support 3 as an example, the first docking member 51 does not need to move along the thickness direction of the rear support 3, thus reducing the space occupied by the first docking member 51 in the thickness direction of the rear support 3.
[0095] In summary, this application has a simple structure, which can reduce the difficulty, time cost and structural cost of production and assembly, avoid the risk of failure due to too many parts, and improve the competitiveness of the product in the market.
[0096] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.
Claims
1. A trolley locking and unlocking structure, characterized in that: It includes a push handle (1), a front bracket (2), and a rear bracket (3) that are rotatably arranged with each other; Also includes: Connector (4), the two ends of the connector (4) are respectively rotatably disposed on the front bracket (2) and the rear bracket (3); The locking mechanism (5) is partially located in either the front bracket (2) or the rear bracket (3) and partially located in the push handle (1), serving as a mechanism for locking either the front bracket (2) or the rear bracket (3) and the push handle (1); Unlocking component (6), serving as a part for unlocking the locking mechanism (5); The locking mechanism (5) includes a first docking member (51) and a second docking member (52). The first docking member (51) is movably disposed on either the front support (2) or the rear support (3), and the second docking member (52) is fixedly disposed on the push handle (1); or, the first docking member (51) is fixedly disposed on either the front support (2) or the rear support (3), and the second docking member (52) is movably disposed on the push handle (1). The locking mechanism (5) is in a locked state: In the locked state, the first docking member (51) docks with the second docking member (52) to lock either the front bracket (2) or the rear bracket (3) and the push handle (1).
2. The trolley locking and unlocking structure according to claim 1, characterized in that: The first docking member (51) is movably disposed on the rear bracket (3), and the second docking member (52) is fixedly disposed on the push handle (1).
3. The trolley locking and unlocking structure according to claim 2, characterized in that: The push handle (1) is provided with a groove (11), which constitutes the second docking member (52).
4. The trolley locking and unlocking structure according to claim 1, characterized in that: It also includes a reset member (7), which acts on at least the first docking member (51) or the second docking member (52) as a component for causing the first docking member (51) and the second docking member (52) to reset and dock.
5. The trolley locking and unlocking structure according to claim 1, characterized in that: The unlocking component (6) includes a horizontal moving part (61) and a vertical moving part (62). The horizontal moving part (61) is provided with a first inclined surface (611). The vertical moving part (62) is provided with a second inclined surface (621) corresponding to the first inclined surface (611).
6. The trolley locking and unlocking structure according to claim 5, characterized in that: The unlocking component (6) is in an unlocked state: In the unlocked state, the horizontal moving part (61) moves in the horizontal direction, causing the first inclined surface (611) and the second inclined surface (621) to interact, causing the vertical moving part (62) to move in the vertical direction, thereby realizing the separation and unlocking of the first docking part (51) and the second docking part (52).