Quick release structure of a wheel axle of a baby carriage

Abstract

The utility model relates to a baby carriage technical field especially a baby carriage wheel axle quick release structure, including sleeve, assembly shaft and U type elastic locking piece. Sleeve is equipped with axle slot and quick release part with guide inclined plane, assembly shaft is inserted in axle slot, and its end is equipped with positioning groove, locking piece middle part is bent and forms locking part, and its both arms inboard and guide inclined plane are in accord. By pushing locking piece, its both arms slide along guide inclined plane, force locking part to be inserted or separate from positioning groove, thereby realizing quick connection and separation between car wheel and axle, and operation does not need tool. The structure guarantees sliding stability through the design of outer disc and inner disc, and the elasticity of locking piece and rectangular section ensure its resilience reset and stress intensity, and the utility model has the advantages of simple structure, convenient operation, reliable connection and good durability.

Description

Technical Field

[0001] This utility model relates to the field of children's vehicle technology, and in particular to a quick-release structure for children's vehicle wheel axles. Background Technology

[0002] Currently, most children's stroller wheels and axles are fixed with screws or simple pin connections. Screw fixing requires tools for installation and removal, a cumbersome process that hinders quick disassembly during daily cleaning, maintenance, or transportation. Simple pin connections, on the other hand, pose safety hazards due to insecure connections and accidental detachment, and are prone to loosening due to wear after repeated disassembly and assembly. Therefore, there is an urgent need for a tool-free, easy-to-operate, reliable, and durable quick-release wheel structure. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a quick-release structure for the wheel axle of a children's stroller, the specific technical solution of which is as follows: A quick-release structure for a children's stroller wheel axle includes: a sleeve, the sleeve being hollow to form an axle groove, having an opening on one side and a quick-release part on the side away from the opening; the quick-release part having a positioning notch communicating with the axle groove, and a guide slope being provided at the quick-release part, wherein the spacing of the guide slope near the positioning notch is smaller than that on the other side; an assembly shaft inserted into the axle groove, the assembly shaft having a positioning groove on the side near the quick-release part; and a locking member having a U-shaped elastic structure, the middle of which is bent inward to form a locking part; the locking member being inserted into the quick-release part, and the locking part being selectively fitted into the positioning groove to achieve axial positioning of the sleeve and the assembly shaft; the inner sides of the two arms of the locking member engaging with the guide slope.

[0004] Preferably, the quick-release part includes an outer disc and an inner disc spaced apart, the positioning notch and the guide slope are located between the outer disc and the inner disc, and the locking member is slidably embedded between the outer disc and the inner disc.

[0005] Preferably, one end of the locking member is provided with a bent pushing part.

[0006] Preferably, the locking member has an anti-disengagement fold edge at the end away from the pushing part, and the anti-disengagement fold edge matches the end of the guide slope.

[0007] Preferably, the outer wall of the sleeve is provided with a limiting groove.

[0008] Preferably, an assembly clip is provided on the side of the sleeve away from the opening.

[0009] Preferably, the locking element is made of an elastic material, which allows it to undergo elastic deformation and spring back to its original position after being subjected to force.

[0010] Preferably, the locking element has a rectangular cross-section.

[0011] Compared with the prior art, the present invention has the following beneficial effects: Through the ingenious combination of a sleeve, assembly shaft, and U-shaped elastic locking element, and utilizing the guiding effect of the guide slope, a quick and easy operation is achieved between the wheel and axle: a simple push locks it in place, and another push releases it. Its simple and compact structure requires no tools and is extremely convenient to operate. Meanwhile, the elastic design of the locking element ensures its reusable durability, while the rectangular cross-section and anti-detachment structure further enhance operational stability and safety, making it ideal for use in scenarios such as strollers where frequent wheel disassembly and assembly are required. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the quick-release mechanism for the wheel axles of a children's stroller; Figure 2 A cross-section of the quick-release structure of the stroller wheel axle. Figure 1 ; Figure 3 A cross-section of the quick-release structure of the stroller wheel axle. Figure 2 ; Figure 4 This is a schematic diagram of the disassembly structure of the quick-release mechanism for children's stroller wheels and axles.

[0013] Reference numerals: Sleeve 1, Quick release part 11, Positioning notch 12, Guide slope 13, Outer plate 14, Inner plate 15, Limiting groove 16, Assembly clip 17, Assembly shaft 2, Positioning groove 21, Locking part 3, Locking part 31, Pushing part 32, Anti-detachment folding edge 33. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] like Figures 1 to 4 The diagram shows a quick-release structure for a children's stroller wheel axle, used to quickly connect and disconnect the wheel from the axle. It includes a sleeve 1, an assembly shaft 2, and a locking element 3.

[0016] The sleeve 1 is hollow inside, forming a groove for accommodating the assembly shaft 2. An opening for inserting the assembly shaft 2 is provided on one side of the sleeve 1. A quick-release part 11 is provided on the side of the sleeve 1 away from the opening.

[0017] The quick-release part 11 includes an outer plate 14 and an inner plate 15, which are parallel and spaced apart, forming a sliding groove between them. The outer plate 14 and the inner plate 15 share a positioning notch 12 that communicates with the shaft groove. The quick-release part 11 also includes a guide ramp 13, which is preferably V-shaped or triangular, with the distance on the side closest to the positioning notch 12 being smaller than the distance on the side furthest from the opening.

[0018] The assembly shaft 2 can be inserted into the shaft groove. An annular positioning groove 21 is provided at one end of the assembly shaft 2 near the quick-release part 11. When the assembly shaft 2 is inserted into the shaft groove, the positioning groove 21 is exactly located at the positioning notch 12.

[0019] The locking element 3 has a U-shaped structure and is formed by bending a rectangular cross-section metal wire with good elasticity. The middle part is bent inwards to form a locking portion 31. The two arms of the locking element 3 are slidably embedded in the sliding groove between the outer disk 14 and the inner disk 15. The locking portion 31 can be inserted into the positioning notch 12 and engaged in the positioning groove 21, thereby achieving axial locking between the sleeve 1 and the assembly shaft 2. The inner sides of the two arms of the locking element 3 fit into the guide slope 13.

[0020] To further optimize the user experience, one end of the locking member 3 is bent outward to form a pushing part 32, which is convenient for the user to push with their fingers. The other end is bent inward to form an anti-disengagement fold edge 33, which abuts against the end of the guide slope 13, effectively preventing the locking member 3 from accidentally disengaging from the quick-release part 11 when not in operation.

[0021] On the outer side wall of the sleeve 1, a limiting groove 16 is provided circumferentially. The limiting groove 16 can cooperate with the protrusion on the wheel hub to ensure that the wheel can rotate synchronously with the sleeve 1 and transmit power. In addition, a mounting clip 17 is provided on the end of the sleeve 1 away from the opening. The mounting clip 17 can be stably connected to the side cover or hub of the wheel by means of snap-fit ​​or screw connection.

[0022] The assembly and working principle of this utility model are as follows: Assembly process: First, the sleeve 1 is fixedly connected to the wheel via the mounting clip 17 and the limiting groove 16, and the mounting shaft 2 is fixedly connected to the axle. Then, the mounting shaft 2 is inserted into the shaft groove of the sleeve 1 through the opening until the positioning groove 21 at the front end of the mounting shaft 2 is aligned with the positioning notch 12 of the quick-release part 11. Finally, the pushing part 32 of the locking member 3 is pushed, and the locking member 3 moves in the sliding groove. The inner sides of its two arms slide along the guide slope 13. Under the guidance of the guide slope 13, the U-shaped opening of the locking member 3 gradually contracts, allowing the locking part 31 to smoothly pass through the area of ​​the small-spaced positioning notch 12 and finally spring into the positioning groove 21, completing the locking.

[0023] Disassembly process: When it is necessary to remove the wheel, push the pushing part 32 of the locking member 3 again. The locking member 3 continues to move inward, and the inner sides of its two arms are in close contact with the inclined surface of the guide slope 13. As the distance between the guide slopes 13 gradually increases, the two arms of the locking member 3 are forced to elastically expand outward. This expansion action causes the locking part 31 to be pushed out of the positioning groove 21 and separated from the positioning notch 12. At this time, the lock between the assembly shaft 2 and the sleeve 1 is released, and the assembly shaft 2 can be pulled out of the shaft groove of the sleeve 1, realizing the quick removal of the wheel.

[0024] This embodiment achieves rapid operation through the ingenious cooperation of sleeve 1, assembly shaft 2 and U-shaped elastic locking component 3, combined with triangular guide slope 13. The structure is simple and compact, and the operation is convenient and reliable, making it very suitable for use in scenarios such as children's vehicles that require frequent disassembly and assembly of wheels.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick-release structure for a children's stroller wheel axle, characterized in that, include: A sleeve (1) has a hollow interior forming a shaft groove, with an opening on one side and a quick-release part (11) on the side away from the opening. The quick-release part (11) has a positioning notch (12) communicating with the shaft groove, and a guide slope (13) is also provided at the quick-release part (11). The spacing of the guide slope (13) on the side near the positioning notch (12) is smaller than that on the other side. An assembly shaft (2) is inserted into the shaft groove, and a positioning groove (21) is provided on the side of the assembly shaft (2) near the quick-release part (11). A locking member (3) has a U-shaped elastic structure, with its middle part bent inward to form a locking part (31). The locking member (3) is inserted into the quick-release part (11), and the locking part (31) is embedded in the positioning groove (21) to achieve axial positioning of the sleeve (1) and the assembly shaft (2). The inner sides of the two arms of the locking member (3) fit with the guide slope (13).

2. The quick-release structure for a children's stroller wheel axle according to claim 1, characterized in that: The quick-release part (11) includes an outer plate (14) and an inner plate (15) spaced apart. The positioning notch (12) and the guide slope (13) are located between the outer plate (14) and the inner plate (15). The locking member (3) is slidably embedded between the outer plate (14) and the inner plate (15).

3. A quick-release structure for a children's stroller wheel axle according to claim 1 or 2, characterized in that: One end of the locking member (3) is provided with a bent pushing part (32).

4. The quick-release structure for a children's stroller wheel axle according to claim 3, characterized in that: The locking member (3) has an anti-detachment fold edge (33) at one end away from the pushing part (32), and the anti-detachment fold edge (33) matches the end of the guide slope (13).

5. The quick-release structure for a children's stroller wheel axle according to claim 1, characterized in that: The outer wall of the sleeve (1) is provided with a limiting groove (16).

6. The quick-release structure for a children's stroller wheel axle according to claim 1, characterized in that: An assembly clip (17) is provided on the side of the sleeve (1) away from the opening.

7. The quick-release structure for a children's stroller wheel axle according to claim 1, characterized in that: The locking element (3) is made of an elastic material.

8. The quick-release structure for a children's stroller wheel axle according to claim 1, characterized in that: The locking element (3) has a rectangular cross-section.

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