A safety controllable and convenient dismounting device for an auxiliary wheel of a child bicycle

Abstract

The application relates to a safe controllable convenient dismounting device for an auxiliary wheel of a children's bicycle, and belongs to the technical field of children's bicycles. The device comprises a positioning sheet, a main body component, a pressing lock and an auxiliary wheel rod. A long hole and a round hole are formed in the auxiliary wheel rod in the vertical direction. The pressing lock comprises a pressing piece, a locking cap and a first card. One end of the pressing piece penetrates through the positioning sheet, the auxiliary wheel rod and the main body component, and is threadedly connected with the locking cap. The first card is clamped and fixed on the pressing piece. In the position locking state of the auxiliary wheel rod, the first card abuts against the side wall of the positioning sheet away from the locking cap, the locking cap penetrates through the main body component and abuts against the outer wall of the auxiliary wheel rod, and the pressing piece penetrates through the round hole. In the position adjusting state of the auxiliary wheel rod, the locking cap is loosened and pressed, the area originally covered by the locking cap of the pressing piece is exposed, and the diameter is not greater than the inner diameter of the round hole and the long hole. The application has the effects of conveniently adjusting and dismounting the auxiliary wheel.

Description

Technical Field

[0001] This application relates to the technical field of children's bicycles, and in particular to a safe, controllable, and convenient device for assembling and disassembling training wheels for children's bicycles. Background Technology

[0002] Training wheels are a core component for children to maintain balance while riding. According to industry association survey data, the number of children's bicycles in the domestic market is conservatively estimated to have reached 48 million, most of which are equipped with training wheels.

[0003] Long-term industry practice has revealed technical flaws in traditional training wheels. Installation requires specialized tools and strict torque requirements, making disassembly and installation difficult for ordinary consumers. Many parents have damaged parts due to tool misuse. Furthermore, training wheels need to be disassembled and reassembled multiple times during children's riding and play to accommodate different riding needs. Since training wheel brackets often use a single-point fixing structure, the shear strength at the connection between the training wheel rod and the frame decreases significantly after repeated disassembly and reassembly, easily causing the training wheel rod to loosen and creating safety hazards.

[0004] Based on the above, the development of a high-strength, easy-to-operate quick-release and reassembly device for training wheels has become an urgent need for the industry. At the same time, in order to meet the increasingly stringent national and international standards for children's bicycles, more precise protection and control of the quick-release function of training wheels and improve overall safety is a new direction for high-quality development in the industry. Utility Model Content

[0005] To facilitate the adjustment and removal of training wheels, this application provides a safe, controllable, and convenient device for removing and installing training wheels on children's bicycles.

[0006] The technical solution for a safe, controllable, and convenient disassembly / assembly device for children's bicycle training wheels provided in this application is as follows:

[0007] A safe, controllable, and convenient disassembly and assembly device for a child bicycle training wheel includes a positioning plate, a main component, and a training wheel rod. The main component is fixedly connected to the positioning plate. The top end of the training wheel rod is inserted between the main component and the positioning plate and slides vertically. The training wheel rod has an elongated hole and a round notch along the vertical direction. The top end of the elongated hole is open through the top end face of the training wheel rod, and the bottom end is connected to the round notch. The device also includes a pressing lock, which includes a pressing element, a locking cap, and a first clip. One end of the pressing element passes through the positioning plate, the training wheel rod, and the main component and is threadedly connected to the locking cap. The first clip is fixedly embedded in the pressing element. In the locked position state of the training wheel rod: the first clip abuts against the side wall of the positioning plate away from the locking cap, the locking cap abuts against the outer wall of the training wheel rod through the main component, and the pressing element passes through the round notch. In the adjusted position state of the training wheel rod: when the locking cap is loosened and pressed, the area of ​​the pressing element that was originally covered by the locking cap is exposed, and its diameter is not greater than the inner diameter of the round notch and the elongated hole.

[0008] By adopting the above technical solution, when it is necessary to lock the position of the auxiliary wheel rod, tighten the locking cap, the first clip abuts against the positioning piece, the locking cap abuts against the outer wall of the auxiliary wheel rod, and the pressing part passes through the round notch, restricting the movement of the auxiliary wheel rod and realizing the locking of the auxiliary wheel rod; when it is necessary to adjust the position of the auxiliary wheel rod, loosen the locking cap and press it, the area of ​​the pressing part that was originally covered by the locking cap is exposed. Because the diameter of the exposed part is smaller than that of the round notch and the elongated hole, it can move within the round notch and the elongated hole, realizing convenient adjustment and fixation of the auxiliary wheel rod without the need for multiple special tools, thus solving the problem of inconvenient installation and disassembly of traditional auxiliary wheels.

[0009] Optionally, the pressing component includes a positioning rod, a locking rod, a pressing rod, and a screw fixed in sequence. The first card is inserted and fixed on the outer wall of the positioning rod. The locking rod passes through the positioning piece and slides with the positioning piece. The pressing rod is used to pass through the circular notch and its outer diameter is the same as the inner diameter of the circular notch. The screw is threadedly connected to the locking cap, and the diameter of the screw is not greater than the inner diameter of the circular notch and the elongated hole.

[0010] By adopting the above technical solution, the structure of each part of the pressing component is clearly defined. The sliding cooperation between the locking rod and the positioning plate ensures the movement direction of the pressing component. The pressing rod is adapted to the round notch. The screw is connected to the locking cap. All parts work together to ensure that the pressing lock can stably and reliably achieve the locking and adjustment functions.

[0011] Optionally, the positioning plate has a positioning hole, which is not circular, and the outer wall of the locking rod abuts against the inner wall of the positioning hole.

[0012] By adopting the above technical solution, the non-circular positioning hole cooperates with the locking rod to prevent the locking rod from rotating inside the positioning plate, ensuring that the pressing part moves in the predetermined direction, improving the stability and reliability of the pressing lock part, and thus ensuring the accuracy of the auxiliary wheel rod position adjustment.

[0013] Optionally, a positioning sealing plate is fixed on the positioning piece, the positioning sealing plate is located on the side of the positioning piece away from the locking cap, a spring is ringed on the outer wall of the positioning rod, one end of the spring abuts against the positioning sealing plate, and the other end abuts against the first card, and a clearance hole is opened on the positioning sealing plate for the end of the positioning rod to pass through.

[0014] By adopting the above technical solution, the spring provides a restoring force, which allows the pressing part to automatically reset after being released, returning to the state of locking the auxiliary wheel rod. This eliminates the need for manual reset, making it more convenient to use. At the same time, the positioning plate plays a role in protecting and supporting the spring.

[0015] Optionally, a second clip is snapped onto the screw, the second clip being located near the end of the screw that passes through the locking cap.

[0016] By adopting the above technical solution, the second card can limit the screw from being excessively screwed out of the locking cap, prevent the screw from detaching from the locking cap, and ensure the integrity of the pressing lock structure and the normal realization of its function.

[0017] Optionally, a snap-on cover is attached to the locking cap, which is used to cover the area where the screw passes through the locking cap.

[0018] By adopting the above technical solution, the cover can prevent dust, mud and other impurities from entering the connection between the screw and the locking nut, avoid the impact of impurity accumulation on the smoothness of the threaded connection, ensure the normal screwing operation of the locking nut and the screw, and improve the durability of the device.

[0019] Optionally, the locking cap has a groove at the end away from the main component, the area where the screw passes through the locking cap is located in the groove, and the cover covers the opening end of the groove.

[0020] By adopting the above technical solution, the groove design provides a space for the screw to pass through, so that the cover can better cover and protect the connection area between the screw and the locking nut, while making the overall structure more compact and beautiful.

[0021] Optionally, the circumferential outer wall of the locking cap at the end away from the main component is polygonal.

[0022] By adopting the above technical solution, the polygonal outer wall makes it easier for users to perform screwing operations. Compared with the circular outer wall, it is easier to apply force, which improves the efficiency of tightening or loosening the locking cap and makes it convenient for users to lock and adjust the auxiliary wheel rod.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. Adopting a unique press-lock structure, the position of the auxiliary wheel rod can be adjusted by simply loosening and pressing, without the need for multiple special tools and strict torque control. This solves the problem of inconvenient installation and disassembly of traditional auxiliary wheels and reduces the risk of component damage caused by tool misuse.

[0025] 2. The combination of locking cap and thread allows for safe control of the installation and removal of the auxiliary wheel rod. It enables flexible installation and removal of the auxiliary wheel when the locking cap is loose, and completely restricts the quick-release function when the locking cap is tight, meeting international requirements for children's bicycles. Users can switch freely according to their actual needs.

[0026] 3. The device has a reasonable structural design and all components work together. For example, the non-circular positioning hole and the locking rod work together to ensure the stability of the pressing part's movement direction, and the spring provides the restoring force to realize the automatic reset of the pressing part, thereby improving the device's stability, reliability and ease of use.

[0027] 4. It features multiple protections and optimized designs, such as a second clip to prevent the screw from coming off, a snap cover to protect the threaded connection, and a polygonal locking cap for easy tightening, which enhances the durability of the device, improves operational efficiency, and fully meets the needs of children's bicycle training wheels for safe, controllable, and convenient assembly and disassembly. Attached Figure Description

[0028] Figure 1 This is a diagram showing the location of the locking cap;

[0029] Figure 2 This is a schematic diagram showing the location of the positioning sealing plate;

[0030] Figure 3 This is a sectional view of the push-button lock mechanism in its operational state.

[0031] Figure 4 This is an exploded view of the locking cap installation;

[0032] Figure 5 This is an exploded view of the press-fit assembly.

[0033] In the diagram, 1. Press-lock component; 11. Press-fit component; 111. Positioning rod; 112. Locking rod; 113. Press-fit rod; 114. Screw; 12. Locking cap; 121. Groove; 13. First card; 2. Positioning piece; 21. Positioning hole; 3. Main component; 4. Auxiliary wheel rod; 41. Long hole; 42. Round notch; 5. Positioning sealing plate; 51. Clearance hole; 6. Spring; 7. Buckle cover; 8. Second card. Detailed Implementation

[0034] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0035] This application discloses a safe, controllable, and convenient device for assembling and disassembling training wheels for children's bicycles.

[0036] refer to Figure 1 and Figure 2A safe, controllable, and easy-to-install device for children's bicycle auxiliary wheels includes a positioning plate 2, a main component 3, an auxiliary wheel rod 4, and a press-lock component 1.

[0037] refer to Figure 3 , Figure 4 and Figure 5 The positioning plate 2 has a non-circular positioning hole 21. In this embodiment, the positioning hole 21 is hexagonal. A positioning sealing plate 5 is also fixed on the positioning plate 2. The positioning sealing plate 5 is located on the side of the positioning plate 2 away from the locking cap 12, and it has a clearance hole 51 for the end of the positioning rod 111 to pass through. The main component 3 is C-shaped. The positioning sealing plate 5, the positioning plate 2, and the auxiliary wheel rod 4 are all wrapped by the main component 3 on three sides. The main component 3, the positioning plate 2, and the positioning sealing plate 5 are all fixed by pins. The main component 3 is located on the side of the positioning plate 2 away from the positioning sealing plate 5. A space is formed between the main component 3 and the positioning plate 2 for the top of the auxiliary wheel rod 4 to be inserted and slide in the vertical direction. The top of the auxiliary wheel rod 4 is inserted between the main component 3 and the positioning piece 2, and can slide in the vertical direction. The auxiliary wheel rod 4 has an elongated hole 41 and a round notch 42 in the vertical direction. The top of the elongated hole 41 is open through the top end face of the auxiliary wheel rod 4, and the bottom end is connected to the inside of the round notch 42.

[0038] refer to Figure 3 , Figure 4 and Figure 5 The pressing locking component 1 includes a pressing component 11, a locking cap 12, and a first card 13. The pressing component 11 includes a positioning rod 111, a locking rod 112, a pressing rod 113, and a screw 114, which are fixed in sequence. That is, one end of the locking rod 112 is fixed to the positioning rod 111, and the other end is fixed to the pressing rod 113. The end of the pressing rod 113 facing away from the locking rod 112 is fixed to one end of the screw 114. The first card 13 is inserted and fixed on the outer wall of the positioning rod 111. The locking rod 112 passes through the positioning hole 21 on the positioning piece 2 and slides with the positioning piece 2. The non-circular inner wall of the positioning hole 21 abuts against the outer wall of the locking rod 112 to prevent the locking rod 112 from rotating in the positioning piece 2 and to ensure the accuracy of the movement direction of the pressing component 11. The pressing rod 113 passes through the circular notch 42 of the auxiliary wheel rod 4, and its outer diameter is the same as the inner diameter of the circular notch 42. The screw 114 is threadedly connected to the locking cap 12, and the diameter of the screw 114 is not greater than the inner diameter of the circular notch 42 and the elongated hole 41. A spring 6 is ringed on the outer wall of the positioning rod 111. One end of the spring 6 abuts against the positioning sealing plate 5, and the other end abuts against the first card 13.

[0039] refer to Figure 3 , Figure 4 and Figure 5When the position of the auxiliary wheel rod 4 needs to be locked, tighten the locking cap 12. At this time, the first clip 13 abuts against the side wall of the positioning piece 2 away from the locking cap 12. The locking cap 12 penetrates the main component 3 and abuts against the outer wall of the auxiliary wheel rod 4. The pressing rod 113 penetrates the round notch 42, thereby restricting the movement of the auxiliary wheel rod 4 and locking the auxiliary wheel rod 4. When the position of the auxiliary wheel rod 4 needs to be adjusted, loosen the locking cap 12. Since the second clip 8 is embedded on the screw 114, it can limit the screw 114 from being excessively screwed out of the locking cap 12, preventing the screw 114 from disengaging from the locking cap 12. After loosening, press down. The area of ​​the pressing part 11 that was originally covered by the locking cap 12 is exposed. The diameter of this part is not greater than the inner diameter of the round notch 42 and the elongated hole 41, so that the pressing part 11 can move within the round notch 42 and the elongated hole 41, realizing convenient adjustment of the auxiliary wheel rod 4. After adjustment, release the pressure. Under the return force of spring 6, the pressing part 11 will automatically reset and return to the locked auxiliary wheel rod 4 state. Alternatively, the auxiliary wheel rod 4 can be directly removed after pressing the locking cap 12.

[0040] After removing the auxiliary wheel rod 4, you can continue to press the locking cap 12 to install and lock the top of the auxiliary wheel rod 4 from top to bottom along the original installation location, i.e., the vertical sliding space between the main component 3 and the positioning piece 2, thus achieving the effect of temporarily storing the auxiliary wheel. This frees up the caregiver's hands and energy for safekeeping, and also prevents careless placement and loss of the auxiliary wheel.

[0041] In addition, refer to Figure 3 and Figure 4 A cover 7 is snapped onto the locking cap 12. A groove 121 is formed at the end of the locking cap 12 furthest from the main component 3. The area where the screw 114 passes through the locking cap 12 is located within the groove 121. The cover 7 covers the opening of the groove 121, preventing dust, sand, and other impurities from entering the connection between the screw 114 and the locking cap 12, thus avoiding the accumulation of impurities affecting the smoothness of the threaded connection. The circumferential outer wall of the end of the locking cap 12 furthest from the main component 3 is polygonal, facilitating manual tightening and loosening operations and improving the efficiency of tightening or loosening the locking cap 12.

[0042] It should be noted that in this embodiment, the diameter of the pressing rod 113 is the same as the diameter of the axle, and the auxiliary wheel rod 4 can be directly installed on the axle without the need for other components in this embodiment, thus enhancing versatility.

[0043] The implementation principle of the safe, controllable, and convenient disassembly and assembly device for children's bicycle training wheels in this application embodiment is as follows: Utilizing the unique structural design of the press-lock component 1, the position of the training wheel lever 4 can be conveniently adjusted and locked through simple loosening and pressing operations, without the need for multiple special tools or strict torque control, thus solving the problem of inconvenient installation and disassembly of traditional training wheels. Simultaneously, the various components cooperate with each other; for example, the non-circular positioning hole 21 ensures the stability of the pressing component 11's movement direction, the spring 6 enables the pressing component 11 to automatically reset, the second clip 8 ensures the structural integrity of the press-lock component 1, and the cover 7 protects the threaded connection, etc., comprehensively improving the stability, reliability, durability, and ease of operation of the device, meeting the needs of safe, controllable, and convenient disassembly and assembly of children's bicycle training wheels in different scenarios.

[0044] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A safe, controllable, and convenient disassembly and assembly device for a child bicycle training wheel, comprising a positioning plate (2), a main component (3), and a training wheel rod (4), wherein the main component (3) is fixedly connected to the positioning plate (2), the top end of the training wheel rod (4) is inserted between the main component (3) and the positioning plate (2) and slides vertically, and the training wheel rod (4) is provided with an elongated hole (41) and a round notch (42) in the vertical direction, wherein the top end of the elongated hole (41) is open through the top end face of the training wheel rod (4), and the bottom end is connected to the inside of the round notch (42), characterized in that: It also includes a press lock (1), which includes a press (11), a locking cap (12) and a first card (13). One end of the press (11) passes through the positioning piece (2), the auxiliary wheel rod (4) and the main body component (3) and is threadedly connected to the locking cap (12). The first card (13) is fixedly embedded in the press (11). In the position-locked state of the auxiliary wheel rod (4): the first card (13) and the positioning piece (2) abut against the side wall of the locking cap (12), the locking cap (12) passes through the main body component (3) and abuts against the outer wall of the auxiliary wheel rod (4), and the pressing piece (11) passes through the round notch (42). In the position adjustment state of the auxiliary wheel rod (4): loosen the locking cap (12) and press it. The area of ​​the pressing part (11) that was originally covered by the locking cap (12) is exposed and its diameter is not greater than the inner diameter of the round notch (42) and the elongated hole (41).

2. The safe, controllable, and convenient disassembly and assembly device for children's bicycle training wheels according to claim 1, characterized in that: The pressing component (11) includes a positioning rod (111), a locking rod (112), a pressing rod (113), and a screw (114) fixed in sequence. The first card (13) is inserted and fixed on the outer wall of the positioning rod (111). The locking rod (112) passes through the positioning piece (2) and slides with the positioning piece (2). The pressing rod (113) is used to pass through the round notch (42) and its outer diameter is the same as the inner diameter of the round notch (42). The screw (114) is threadedly connected to the locking cap (12). The diameter of the screw (114) is not greater than the inner diameter of the round notch (42) and the elongated hole (41).

3. The safe, controllable, and convenient disassembly and assembly device for children's bicycle training wheels according to claim 2, characterized in that: The positioning plate (2) has a positioning hole (21) which is non-circular in shape, and the outer wall of the locking rod (112) abuts against the inner wall of the positioning hole (21).

4. The safe, controllable, and convenient disassembly and assembly device for children's bicycle training wheels according to claim 2, characterized in that: The positioning plate (2) is fixed with a positioning sealing plate (5). The positioning sealing plate (5) is located on the side of the positioning plate (2) away from the locking cap (12). A spring (6) is wrapped around the outer wall of the positioning rod (111). One end of the spring (6) abuts against the positioning sealing plate (5) and the other end abuts against the first card (13). The positioning sealing plate (5) is provided with a clearance hole (51) for the end of the positioning rod (111) to pass through.

5. The safe, controllable, and convenient disassembly and assembly device for a child bicycle training wheel according to claim 2, characterized in that: A second card (8) is snapped into the screw (114), and the second card (8) is located near the end of the screw (114) that passes through the locking cap (12).

6. The safe, controllable, and convenient disassembly and assembly device for a child bicycle training wheel according to claim 5, characterized in that: The locking cap (12) is fitted with a cover (7), which is used to cover the area where the screw (114) passes through the locking cap (12).

7. A safe, controllable, and convenient disassembly and assembly device for a child bicycle training wheel according to claim 6, characterized in that: The locking cap (12) has a groove (121) at one end away from the main component (3). The area through which the screw (114) passes through the locking cap (12) is located in the groove (121). The cover (7) covers the opening end of the groove (121).

8. The safe, controllable, and convenient disassembly and assembly device for a child bicycle training wheel according to claim 1, characterized in that: The outer circumferential wall of the locking cap (12) at the end away from the main component (3) is polygonal.

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