Stroller folding and automatic orientation structure

Abstract

The utility model relates to trolley directional technical field, concretely relates to a trolley folding automatic orientation structure, include: front support structure, including front support main part and the wheel structure of rotation in front support main part, be equipped with recess on the wheel structure, connecting rod structure, with the front support structure each other rotatable setting, locking piece, sliding in front support main part, as the component for through with recess locking assembly to restrict the wheel structure's movement degree of freedom, linkage structure, one end acts on connecting rod structure, the other end acts on locking piece, as the mechanism for linkage connecting rod structure with locking piece to adjust locking piece and recess assembly state, the application passes through linkage structure as the transmission structure between connecting rod structure and locking piece, only through the rotation connecting rod structure can realize the locking to the wheel structure, realize trolley folding automatic orientation after the storage.

Description

Technical Field

[0001] This utility model relates to the field of trolley orientation technology, specifically to a folding automatic orientation structure for trolleys. Background Technology

[0002] Strollers are widely used in daily life and business activities as convenient carrying tools, such as baby strollers, shopping carts, and luggage carts. To improve space utilization during transportation and storage, strollers are usually designed with folding and storage functions.

[0003] In existing technologies, folding a trolley requires rotating and adjusting various components (such as the support structure) to achieve the purpose of folding and storage. However, since the trolley is equipped with wheels, the free rotation of the wheels after folding can cause many problems. For example, if the folded trolley needs to be moved or placed, the random rolling of the wheels can make it difficult to park stably, easily causing displacement or even tipping over, which not only affects the stability of storage but may also cause collision damage to surrounding items.

[0004] To address this issue, existing shopping carts typically employ a method of locking the wheels after folding, requiring at least one wheel to be locked. However, this locking operation is independent of the rotation of the support structure, which undoubtedly increases the number of steps in the folding process, prolongs the operation time, and increases the complexity of the operation. For example, for shopping mall staff, when stacking folded shopping carts, the wheels must be locked to prevent them from rolling, and this extra step reduces storage efficiency.

[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 folding automatic orientation structure for a trolley.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A folding automatic orientation structure for a stroller includes:

[0009] A front support structure includes a front support body and a wheel-shaped structure rotatably disposed on the front support body, wherein the wheel-shaped structure is provided with a recess;

[0010] The linkage structure is rotatably configured relative to the front support structure.

[0011] A locking element is slidably disposed on the front support body, serving as a component for restricting the degree of freedom of movement of the wheel-shaped structure by locking it with the recess;

[0012] The linkage structure, with one end acting on the linkage structure and the other end acting on the locking member, serves as a mechanism for linking the linkage structure and the locking member to adjust the assembly state between the locking member and the recess.

[0013] It should be noted that the front support structure can be the actual rear support assembly on an existing trolley, and the front support structure and the rear support structure can be switched in a bidirectional trolley.

[0014] When the trolley is folded and stored, the rotating linkage structure drives the locking component to engage with the recessed locking assembly via a linkage mechanism. This locks the wheel-shaped structure on the front support structure, restricting its degree of freedom of movement and improving the stability of the trolley after folding and storing. Taking a wheel-shaped structure including casters as an example, the casters' degree of freedom of movement is restricted, such as only being able to move in two symmetrical directions.

[0015] By using a linkage structure as the transmission structure between the linkage structure and the locking component, the wheel structure can be locked simply by rotating the linkage structure, achieving automatic orientation after the trolley is folded and stored. This eliminates the need to lock the wheel structure separately, improving the ease of operation during the trolley folding and storage process.

[0016] A further technical solution involves providing a pin hole on the wheel-shaped structure, which forms the recess, and the locking element is a locking pin. By using a pin hole and a locking pin to lock the wheel-shaped structure, a stable lock can be achieved, restricting the wheel-shaped structure's freedom of movement through a mechanical hard connection. Simultaneously, operation is simple, allowing for quick switching of states by inserting and removing the locking pin; moreover, it is widely adaptable, durable, and reliable, functioning stably in various scenarios.

[0017] In a further technical solution, the pin hole is located at the top of the wheel-shaped structure and extends vertically.

[0018] In terms of ease of operation, the pin hole is located at the top of the wheel-shaped structure, making it easy for the operator to observe.

[0019] From a space utilization perspective, the vertical extension of the pin hole design does not occupy additional lateral space of the wheel-shaped structure, avoiding the problem of collision or interference with surrounding objects due to the lateral protrusion of the pin hole, thus improving the overall compactness of the structure.

[0020] A further technical solution is that the linkage structure includes:

[0021] The traction member acts on the linkage structure at one end and on the locking member at the other end, serving as a component for connecting the linkage structure and the locking member to adjust the assembly state of the locking member and the recess.

[0022] The traction component enables stable linkage between the linkage structure and the locking component, which are spaced a certain distance apart, and can adapt to combinations of linkage structures and locking components with different spacing and layouts.

[0023] A further technical solution is to use a steel wire rope as the traction component. Its structure is simple, it is not prone to failure, and its maintenance cost is low. In daily use, only simple inspection and lubrication are required to ensure its normal operation. Compared with some complex mechanical transmission components, it can save a lot of maintenance time and costs.

[0024] In a further technical solution, the linkage structure further includes a first elastic element, one end of which acts on the locking element, and the other end of which acts on the wheel-shaped structure or the front support body.

[0025] The locking component can be locked to the recess by gravity, but this process is unstable and slow. However, with the assistance of the first elastic component, the stability and speed of this process are both guaranteed.

[0026] A further technical solution is to set the first elastic element as a compression spring, which has the advantages of simple structure and low cost; at the same time, its structure is compact, occupies little space, and will not affect the overall layout and size of the application too much.

[0027] In a further technical solution, the linkage structure includes a rear support body and a rotating component connected together, and the rotating component is provided with a first inclined surface;

[0028] The linkage structure further includes a sliding member, which is connected to the traction member and slidably disposed on the front support body. The sliding member has a second inclined surface corresponding to the first inclined surface.

[0029] The rotating component can convert its rotational motion into linear sliding motion of the sliding component through the cooperating first and second inclined surfaces;

[0030] The linkage structure also includes a second elastic element, one end of which acts on the sliding element and the other end of which acts on the front support body.

[0031] One possible working process of this application is as follows:

[0032] When the rear support body rotates and is stored, the rotating component rotates after the support body, causing the first inclined surface to apply pressure to the second inclined surface, causing the sliding component to slide in a straight line, so that the traction component is in a relaxed state. Then, under the combined action of the first elastic component and gravity, the locking component extends into the recess and locks with it, restricting the degree of freedom of movement of the wheel-shaped structure.

[0033] When the rear support body rotates and unfolds, the rotating component rotates after the support body, and the second elastic component causes the sliding component to slide and reset. The sliding component pulls the locking component and the recessed part apart through the traction component.

[0034] Through the interaction of the first and second inclined surfaces, the rotating component converts its rotational motion into the linear sliding motion of the sliding component, ultimately achieving automatic locking and assembly between the locking component and the recess, reducing operational steps. Furthermore, the second elastic component enables the sliding component to automatically reset, similarly reducing operational steps during the unlocking process of the wheel-shaped structure.

[0035] 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.

[0036] 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.

[0037] The terms “include,” “including,” and “have” used in this article are all open-ended, meaning they include but are not limited to.

[0038] 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.

[0039] 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.

[0040] The working principle and advantages of this utility model are as follows:

[0041] When the trolley is folded and stored, the rotating linkage structure drives the locking component to engage with the recessed locking assembly via a linkage mechanism. This locks the wheel-shaped structure on the front support structure, restricting its degree of freedom of movement and improving the stability of the trolley after folding and storing. Taking a wheel-shaped structure including casters as an example, the casters' degree of freedom of movement is restricted, such as only being able to move in two symmetrical directions.

[0042] The trolley itself is equipped with several linkages, which can be part of the linkage structure. The linkage structure rotates during the trolley's folding stage. Through the linkage structure, which serves as the transmission structure between the linkage structure and the locking component, the wheel structure can be locked simply by rotating the linkage structure. This achieves automatic orientation of the trolley after folding and folding, eliminating the need for a separate locking step for the wheel structure. This improves the ease of operation during the folding and folding process, ensures the stability of the trolley after folding, and prevents collision damage to surrounding items caused by the trolley tipping over. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the overall structure of the folding automatic orientation structure of the trolley according to an embodiment of the present invention;

[0044] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0045] Figure 3 This is one of the partial structural schematic diagrams of the folding automatic orientation structure of the trolley according to an embodiment of this utility model;

[0046] Figure 4 This is a second partial structural schematic diagram of the folding automatic orientation structure of the trolley according to an embodiment of this utility model;

[0047] Figure 5 This is a partial structural diagram of the front support structure in an embodiment of the present invention;

[0048] Figure 6 This is a schematic diagram of the sliding component in an embodiment of the present invention.

[0049] In the above figures: 1. Front support structure; 11. Front support body; 12. Wheel-shaped structure; 121. Pin hole; 13. Recess; 2. Linkage structure; 21. Rear support body; 22. Rotating component; 221. First inclined surface; 3. Locking component; 4. Linkage structure; 41. Traction component; 42. First elastic component; 43. Sliding component; 431. Second inclined surface; 44. Second elastic component. Detailed Implementation

[0050] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0051] 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.

[0052] 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.

[0053] See Figures 1-6 A folding automatic orientation structure for a stroller, comprising:

[0054] The front support structure 1 includes a front support body 11 and a wheel-shaped structure 12 rotatably disposed on the front support body 11, wherein the wheel-shaped structure 12 is provided with a recess 13;

[0055] The connecting rod structure 2 is rotatably configured with respect to the front support structure 1;

[0056] Locking member 3 is slidably disposed on the front support body 11, serving as a component for restricting the degree of freedom of movement of the wheel structure 12 by locking it with the recess 13;

[0057] The linkage structure 4 acts on the linkage structure 2 at one end and on the locking member 3 at the other end, serving as a mechanism for linking the linkage structure 2 and the locking member 3 to adjust the assembly state between the locking member 3 and the recess 13.

[0058] It should be noted that the front support structure 1 can be an actual rear support assembly on an existing trolley.

[0059] When the trolley is folded and stored, rotating the linkage structure 2 causes the locking member 3 to engage with the recess 13 via the linkage structure 4, thereby locking the wheel-shaped structure 12 on the front support structure 1. This restricts the degree of freedom of movement of the wheel-shaped structure 12, improving the stability of the trolley after folding and storing. Taking the wheel-shaped structure 12, which includes casters, as an example, the degree of freedom of movement of the casters is restricted, such as only being able to move along two symmetrical directions.

[0060] The linkage structure 2 rotates during the trolley storage stage. The linkage structure 4 serves as the transmission structure between the linkage structure 2 and the locking element 3. The wheel structure 12 can be locked simply by rotating the linkage structure 2, achieving automatic orientation after the trolley is folded and stored. This eliminates the need to lock the wheel structure 12 separately, improving the ease of operation during the trolley folding and storage process.

[0061] The trolley itself has several connecting rods, and connecting rod structure 2 can be a part of them, avoiding the need to increase the number of structures on the trolley and also avoiding increasing the steps for storing the trolley. Preferably, the rear support structure on the trolley constitutes connecting rod structure 2. The trolley can be a bidirectional trolley, in which case the front support structure 1 and the rear support structure can be switched according to the direction of travel of the trolley.

[0062] See Figure 5In this embodiment, the wheel-shaped structure 12 is provided with a pin hole 121, which constitutes the recess 13, and the locking member 3 is a locking pin. By using the pin hole 121 and the locking pin to lock the wheel-shaped structure 12, a stable lock can be achieved, restricting the degree of freedom of movement of the wheel-shaped structure 12 through a mechanical hard connection; at the same time, operation is simple, and the state can be quickly switched by inserting and removing the locking pin; moreover, it has wide adaptability and is durable and reliable, and can function stably in various scenarios. For further explanation, the wheel-shaped structure 12 can rotate around a set vertical axis. When the locking pin is inserted into the pin hole 121, it restricts the rotation of the wheel-shaped structure 12 around this vertical axis.

[0063] See Figure 5 In this embodiment, the pin hole 121 is located at the top of the wheel-shaped structure 12 and extends vertically.

[0064] In terms of ease of operation, the pin hole 121 is located at the top of the wheel-shaped structure 12, making it easy for the operator to observe.

[0065] From the perspective of space utilization, the vertical extension of the pin hole 121 does not occupy the horizontal space of the wheel structure 12, thus avoiding the problem of collision or interference with surrounding objects due to the horizontal protrusion of the pin hole 121, and improving the overall compactness of the structure.

[0066] See Figure 2 In this embodiment, the linkage structure 4 includes:

[0067] The traction member 41 acts on the connecting rod structure 2 at one end and on the locking member 3 at the other end, serving as a component for connecting the connecting rod structure 2 and the locking member 3 to adjust the assembly state of the locking member 3 and the recess 13.

[0068] The traction component 41 enables the linkage structure 2 and the locking component 3, which are spaced a certain distance apart, to achieve stable linkage and can adapt to combinations of linkage structure 2 and locking component 3 with different spacing and layout.

[0069] In this embodiment, the traction component 41 is a steel wire rope, which has a simple structure, is not prone to failure, and has low maintenance costs. In daily use, only simple inspection and lubrication are required to ensure its normal operation. Compared with some complex mechanical transmission components, it can save a lot of maintenance time and costs.

[0070] See Figure 4 In this embodiment, the linkage structure 4 further includes a first elastic member 42, one end of which acts on the locking member 3, and the other end acts on the wheel structure 12 or the front support body 11.

[0071] The locking member 3 can be locked to the recess 13 by gravity, but this process is unstable and slow. However, with the assistance of the first elastic member 42, the stability and speed of this process are both guaranteed.

[0072] In this embodiment, the first elastic element 42 is a compression spring, which has the advantages of simple structure and low cost; at the same time, its structure is compact, occupies little space, and will not affect the overall layout and size of the application too much.

[0073] See Figures 2-6 In this embodiment, the linkage structure 2 includes a rear support body 21 and a rotating component 22 connected to each other, and the rotating component 22 is provided with a first inclined surface 221;

[0074] The linkage structure 4 also includes a sliding member 43, which is connected to the traction member 41 and slidably disposed on the front support body 11. A second inclined surface 431 is provided on the sliding member 43 corresponding to the first inclined surface 221.

[0075] The rotating component 22 can convert its own rotational motion into the linear sliding motion of the sliding component 43 through the cooperating first inclined surface 221 and second inclined surface 431;

[0076] The linkage structure 4 also includes a second elastic element 44, one end of which acts on the sliding element 43 and the other end of which acts on the front support body 11.

[0077] The rear support body 21 and the rotating part 22 can be regarded as the existing rear support structure on the trolley.

[0078] One working process of this embodiment is as follows:

[0079] When the rear support body 21 is rotated and stored, the rotating part 22 rotates after the support body 21, causing the first inclined surface 221 to press against the second inclined surface 431, causing the sliding part 43 to slide in a straight line, so that the traction part 41 is in a relaxed state. Then, under the combined action of the first elastic part 42 and gravity, the locking part 3 and the recess 13 are locked together, restricting the degree of freedom of movement of the wheel structure 12.

[0080] When the rear support body 21 rotates and unfolds, the rotating part 22 rotates after the support body 21, and the second elastic part 44 causes the sliding part 43 to slide and reset. The sliding part 43 pulls the locking part 3 and the recess 13 through the traction part 41.

[0081] Through the interaction between the first inclined surface 221 and the second inclined surface 431, the rotating member 22 converts its rotational motion into the linear sliding motion of the sliding member 43, ultimately achieving automatic locking and assembly between the locking member 3 and the recess 13, reducing operation steps. Furthermore, the second elastic member 44 enables the sliding member 43 to automatically reset, similarly reducing operation steps during the unlocking process of the wheel-shaped structure 12.

[0082] 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 folding automatic orientation structure for a trolley, characterized in that: include: The front support structure (1) includes a front support body (11) and a wheel-shaped structure (12) rotatably disposed on the front support body (11), and the wheel-shaped structure (12) is provided with a recess (13). The linkage structure (2) is rotatably configured with respect to the front support structure (1); The locking element (3) is slidably disposed on the front support body (11) and serves as a component for restricting the degree of freedom of movement of the wheel structure (12) by locking it with the recess (13); The linkage structure (4) acts on the linkage structure (2) at one end and on the locking member (3) at the other end, serving as a mechanism for linking the linkage structure (2) and the locking member (3) to adjust the assembly state between the locking member (3) and the recess (13).

2. The folding automatic orientation structure for a trolley according to claim 1, characterized in that: The wheel-shaped structure (12) is provided with a pin hole (121), the pin hole (121) forms the recess (13), and the locking member (3) is a locking pin.

3. The folding automatic orientation structure for a trolley according to claim 2, characterized in that: The pin hole (121) is located at the top of the wheel-shaped structure (12) and extends vertically.

4. A folding automatic orientation structure for a trolley according to any one of claims 1-3, characterized in that: The linkage structure (4) includes: The traction member (41) acts on the linkage structure (2) at one end and on the locking member (3) at the other end, serving as a component for connecting the linkage structure (2) and the locking member (3) to adjust the assembly state between the locking member (3) and the recess (13).

5. The folding automatic orientation structure for a trolley according to claim 4, characterized in that: The traction component (41) is a steel wire rope.

6. The folding automatic orientation structure for a trolley according to claim 4, characterized in that: The linkage structure (4) further includes a first elastic element (42), one end of which acts on the locking element (3), and the other end acts on the wheel structure (12) or the front support body (11).

7. The folding automatic orientation structure for a trolley according to claim 6, characterized in that: The first elastic element (42) is configured as a compression spring.

8. The folding automatic orientation structure for a trolley according to claim 4, characterized in that: The linkage structure (2) includes a rear support body (21) and a rotating component (22) connected to each other, and the rotating component (22) is provided with a first inclined surface (221). The linkage structure (4) further includes a sliding member (43), which is connected to the traction member (41) and slidably disposed on the front support body (11). The sliding member (43) has a second inclined surface (431) corresponding to the first inclined surface (221). The rotating component (22) can convert its own rotational motion into the linear sliding motion of the sliding component (43) through the cooperating first inclined surface (221) and second inclined surface (431); The linkage structure (4) also includes a second elastic element (44), one end of which acts on the sliding element (43) and the other end of which acts on the front support body (11).

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