Quick-release auxiliary wheel device and bicycle

Abstract

The utility model belongs to the technical field of bicycles, and discloses a quick-release auxiliary wheel device which comprises a rear wheel support, chain wheel shells and a buckle assembly, and the chain wheel shells are symmetrically arranged on the two sides of the rear wheel support; a buckle assembly is arranged in the chain wheel shell, a buckle port of the buckle assembly is formed in the bottom of the chain wheel shell, and an unbuckling end of the buckle assembly is arranged on one side of the chain wheel shell. The clamping end of the auxiliary wheel assembly is matched with the buckling port, the clamping end of the auxiliary wheel assembly can be inserted into the buckling port, the buckling end of the buckling assembly can be in buckling connection with the clamping end of the auxiliary wheel assembly, and the clamping end of the auxiliary wheel assembly can be pulled out of the buckling port of the buckling assembly by pressing the releasing end of the buckling assembly and releasing limiting. The auxiliary wheel assembly and the buckle assembly arranged in the chain wheel shell are fixed in a buckle connection mode, the disassembly and assembly mode is simple, a tool does not need to be used for disassembly, and the auxiliary wheel assembly can be rapidly pulled out of the buckle assembly by pressing the unlocking end.

Description

Technical Field

[0001] The utility model relates to a quick-release auxiliary wheel device and a bicycle, belonging to the technical field of bicycles. Background Art

[0002] Among the existing products, there are designs that combine a balance bike and a bicycle into one, mainly to meet the learning and entertainment needs of children of different ages. This two-in-one product design is designed to allow children to first learn how to maintain balance through a balance bike, and then transition to riding a bicycle with training wheels. The training wheels can help children gradually adapt to the sense of balance on the bicycle and prepare for their transition to a bicycle without training wheels. Traditional bicycle teaching methods usually recommend using a bicycle with training wheels first, and then gradually removing the training wheels after the child has learned basic balance. This method helps children build confidence in riding a bicycle and adapt to bicycles without training wheels more quickly, so that they can master riding skills more safely and effectively.

[0003] However, the training wheels of existing bicycles cannot be quickly disassembled and installed, and the disassembly and installation method is very complicated and requires tools to disassemble, which makes it difficult for users to quickly switch between the bicycle mode and the balance car model. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a quick-release auxiliary wheel device that is convenient to assemble and disassemble.

[0005] To achieve the above-mentioned purpose, the utility model provides a quick-release auxiliary wheel device, comprising: a rear wheel bracket and a sprocket housing, the sprocket housings are symmetrically arranged on both sides of the rear wheel bracket; a buckle assembly, the inside of the sprocket housing is provided with a buckle assembly, the buckle port of the buckle assembly is arranged at the bottom of the sprocket housing, and the release end of the buckle assembly is arranged on one side of the sprocket housing; an auxiliary wheel assembly, the buckle end of the auxiliary wheel assembly is adapted to the buckle port, the buckle end of the auxiliary wheel assembly can be inserted into the buckle port, the buckle end of the buckle assembly can form a buckle connection with the buckle end of the auxiliary wheel assembly, the release end of the buckle assembly is pressed to release the limit, so that the buckle end of the auxiliary wheel assembly can be pulled out from the buckle port of the buckle assembly.

[0006] Furthermore, as a more preferred embodiment of the present invention, the buckle assembly includes a sleeve, one side of the sleeve is connected to the inner wall of the sprocket housing, and the bottom of the sleeve is connected to the buckle port; a through groove is provided in the middle of the sleeve and runs through the entire sleeve; it also includes a buckle piece adapted to the through groove, the buckle piece can slide along the through groove, a release hole is provided on the side wall of the sprocket housing facing the sliding direction of the buckle piece, and a first protrusion adapted to the release hole is provided at one end of the buckle; it also includes an elastic piece, a receiving groove is provided in the middle of the buckle piece, the size of the receiving groove is adapted to the inner ring of the sleeve, and a second protrusion is provided on one side of the receiving groove; one end of the elastic piece can be inserted into the second protrusion to form a limit, and the other end can resist one side of the sleeve, the elastic force of the elastic piece causes one end of the buckle piece to be inserted into the middle of the through groove, and the first protrusion is ejected out of the release hole, and the ejected first protrusion is the release end.

[0007] Furthermore, as a more preferred embodiment of the present invention, both sides of the rear wheel bracket are integrally formed with the sprocket housing, and the space between the two sprocket housings is used to install the rear wheel of the bicycle. The sprocket housing includes a shell and a shell cover, and an opening is provided on the outer side of the shell. The shell cover is adapted to the opening and can be detachably connected to the opening.

[0008] Furthermore, as a more preferred embodiment of the present invention, the auxiliary wheel assembly includes a support rod and a roller, one end of the support rod is detachably connected to the roller, and the other end is provided with an insertion rod adapted to the buckle port, one side of the insertion rod is provided with a slot adapted to the buckle piece, the insertion rod is inserted into the receiving groove from the buckle port, one side of the end of the insertion rod can abut against one side of the receiving groove, and the insertion is continued to overcome the elastic force of the elastic member, and the receiving groove is pushed to correspond to the inner circle of the sleeve, and the insertion rod can pass through the receiving groove until the slot reaches the position of the receiving groove, and under the elastic force of the elastic member, one side of the receiving groove of the buckle piece is snapped into the slot to form a buckle limit.

[0009] Furthermore, as a more preferred embodiment of the present invention, chamfers are respectively provided on both sides of the end of the insertion rod, so that when the insertion rod is inserted into the receiving groove, one side of the receiving groove can be pushed out of the inner circle of the sleeve along the chamfer.

[0010] Furthermore, as a more preferred embodiment of the present invention, another slot is symmetrically provided on the other side of the insertion rod.

[0011] Furthermore, as a more preferred embodiment of the present invention, when one side of the receiving groove of the buckle is inserted into the groove, the end of the insertion rod is just inserted to the end of the inside of the sleeve.

[0012] Furthermore, as a more preferred embodiment of the present invention, a limiting protrusion is provided on the outer side of the through groove, and the inner ring of the other end of the elastic member can be inserted into the limiting protrusion to form a limit.

[0013] Furthermore, as a more preferred embodiment of the present invention, the support rod is Z-shaped.

[0014] Based on the same inventive concept, the utility model also provides a bicycle, comprising the above-mentioned quick-release auxiliary wheel device.

[0015] Compared with the prior art, the beneficial effects are:

[0016] 1. The auxiliary wheel assembly of the utility model is fixed to the buckle assembly arranged in the sprocket housing by a buckle connection. When in use, the corresponding buckle assembly is inserted into the buckle assembly to form a clamping position limit state. When disassembly is required, the release end is pressed to release the limit state of the auxiliary wheel assembly, and the auxiliary wheel assembly can be quickly pulled out from the buckle assembly;

[0017] In particular, the buckle assembly is arranged in the sprocket housing, and the buckle port of the buckle assembly is arranged at the bottom of the sprocket housing. After the auxiliary wheel assembly is released, when the bicycle is converted into a balance car, no protrusions are left outside the sprocket housing of the utility model, and the sprocket housing will not be scratched by the child's pedaling to the rear wheel of the balance car, thereby improving the safety of product use.

[0018] 2. The buckle of the utility model is provided with a receiving groove in the middle, which can provide a channel for the insertion rod to pass through, and when the insertion rod's slot reaches the position of the receiving groove, the elastic reset of the elastic member can quickly snap one side of the receiving groove, that is, one end of the buckle into the slot along the receiving groove to form a limit, and the sleeve is arranged in the sprocket housing, and the sleeve has a longer channel, which can form a good support for the two sides of the inserted insertion rod; the auxiliary wheel assembly can be stably fixed.

[0019] 3. In the utility model, chamfers are respectively provided on both sides of the end of the card slot, so that when the insertion rod is inserted into the receiving slot, one side of the receiving slot can be pushed out of the inner circle of the sleeve along the chamfer. The user does not need to press the release end and then insert the insertion rod, which makes installation more convenient.

[0020] 4. The insertion rod of the utility model is provided with a card slot on both sides, and the auxiliary wheel assemblies on both sides of the bicycle can be used universally, regardless of the left and right auxiliary wheel assemblies.

[0021] 5. In the present invention, a limiting protrusion is arranged on the outer side of the through groove, one end of the elastic member can be inserted into the second protrusion, and the inner ring of the other end can be inserted into the limiting protrusion, so that the two ends form limits, which effectively prevents the elastic member from falling off and improves the stability of the buckle assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the unfolded structure of the quick-release auxiliary wheel device according to the embodiment.

[0023] Figure 2 Schematic diagram of the structure of the buckle assembly in the embodiment.

[0024] Figure 3 Schematic diagram of the structure of the buckle assembly in the embodiment.

[0025] Figure 4 Schematic diagram of the structure of the buckle in the embodiment.

[0026] Figure 5 Schematic diagram of the overall structure of the bicycle of the embodiment.

[0027] Reference numerals:

[0028] 1-Rear wheel bracket;

[0029] 2-sprocket housing, 21-unbuttoning hole, 22-housing;

[0030] 3- buckle assembly, 31- buckle port, 311- limiting notch, 32- release end, 33- sleeve, 331- through slot, 34- buckle member, 341- first protrusion, 342- receiving slot, 343- second protrusion, 35- elastic member;

[0031] 4- auxiliary wheel assembly, 41- support rod, 411- plug rod, 4111- slot, 4112- chamfer, 412- shoulder, 42- roller;

[0032] 5-cranks, 6-pedals. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of this application.

[0034] It should be noted that when an element is referred to as being "fixed on" or "set on" another component, it can be directly on the other component or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component.

[0035] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0037] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0038] Example

[0039] This embodiment is intended to promote the solution of the problem that the auxiliary wheels of existing bicycles cannot be quickly disassembled and installed, and the disassembly and assembly method is very complicated and requires tools to disassemble, which is not easy for users to quickly switch between bicycle mode and balance car model. For this purpose, a quick-release auxiliary wheel device is provided, in which the auxiliary wheel assembly 4 is fixed to the buckle assembly 3 arranged in the sprocket housing 2 by a buckle connection. When in use, the corresponding insertion into the buckle assembly 3 forms a clamping position limiting state. When disassembly is required, the release end 32 is pressed to release the limiting state of the auxiliary wheel assembly 4, and the auxiliary wheel assembly 4 can be quickly pulled out from the buckle assembly 3.

[0040] Reference Figure 1-4 As shown, a quick-release auxiliary wheel device comprises: a rear wheel bracket 1 and a sprocket housing 2, the sprocket housings 2 are symmetrically arranged on both sides of the rear wheel bracket 1; a buckle assembly 3, the inside of the sprocket housing 2 is provided with a buckle assembly 3, a buckle port 31 of the buckle assembly 3 is arranged at the bottom of the sprocket housing 2, and a release end 32 of the buckle assembly 3 is arranged at one side of the sprocket housing 2;

[0041] The auxiliary wheel assembly 4, the snap-on end of the auxiliary wheel assembly 4 is adapted to the snap-on port 31, the snap-on end of the auxiliary wheel assembly 4 can be inserted into the snap-on port 31, the snap-on end of the snap-on assembly 3 can form a snap-on connection with the snap-on end of the auxiliary wheel assembly 4, press the release end 32 of the snap-on assembly 3 to release the limit, so that the snap-on end of the auxiliary wheel assembly 4 can be pulled out from the snap-on port 31 of the snap-on assembly 3.

[0042] Reference Figure 1-4 As shown, specifically, the buckle assembly 3 includes a sleeve 33, one side of the sleeve 33 is connected to the inner wall of the sprocket housing 2, and the bottom of the sleeve 33 is connected to the buckle port 31; the middle of the sleeve 33 is provided with a through groove 331 that runs through the entire sleeve 33; it also includes a buckle 34 that is adapted to the through groove 331, the buckle 34 can slide along the through groove 331, and the side wall of the sprocket housing 2 in the sliding direction of the buckle 34 is provided with a release hole 21, and one end of the buckle 34 is provided with a first protrusion 341 that is adapted to the release hole 21; it also includes an elastic member 35 A receiving groove 342 is provided in the middle of the buckle 34, and the size of the receiving groove 342 is adapted to the inner circle of the sleeve 33, and a second protrusion 343 is provided on one side of the receiving groove 342; one end of the elastic member 35 can be inserted into the second protrusion 343 to form a limit, and the other end can be against one side of the sleeve 33, and the elastic force of the elastic member 35 makes one end of the buckle 34 (that is, the buckle end of the buckle assembly 3) snap into the middle of the through groove 331, and the first protrusion 341 is pushed out of the unfastening hole 21, and the pushed out first protrusion 341 is the unfastening end 32.

[0043] Reference Figure 2 and 3 As shown, specifically, both sides of the rear wheel bracket 1 are integrally formed with the sprocket housing 2, and a U-shape is formed between the sprocket housings 2 and the rear wheel bracket 1. The space between the two sprocket housings 2 is used to install the rear wheel of the bicycle. The sprocket housing 2 includes a shell 22 and a shell cover 23. An opening is provided on the outer side of the shell 22. The shell cover 23 is adapted to the opening and can be detachably connected to the opening. The snap assembly 3 is arranged near the end of the sprocket housing 2.

[0044] Reference Figure 2 and 3As shown, the auxiliary wheel assembly 4 includes a support rod 41 and a roller 42. One end of the support rod 41 is detachably connected to the roller 42, and the other end is provided with an insertion rod 411 adapted to the buckle port 31. One side of the insertion rod 411 is provided with a clamping groove 4111 adapted to the buckle member 34, and the clamping groove 4111 is the clamping end of the auxiliary wheel assembly 4. The insertion rod 411 is inserted into the receiving groove 342 from the buckle port 31, and one side of the end of the insertion rod 411 can be against one side of the receiving groove 342. The insertion is continued to overcome the elastic force of the elastic member 35, and the receiving groove 342 is pushed to correspond to the inner circle of the sleeve 33. The insertion rod 411 can pass through the receiving groove 342 until the clamping groove 4111 reaches the position of the receiving groove 342. Under the elastic force of the elastic member 35, one side of the receiving groove 342 of the buckle member 34 is clamped into the clamping groove 4111 to form a buckle limit.

[0045] Reference Figure 2 and 3 As shown, specifically, chamfers 4112 are respectively provided on both sides of the end of the insertion rod 411, so that when the insertion rod 411 is inserted into the receiving groove 342, one side of the receiving groove 342 can be pushed out of the inner circle of the sleeve 33 along the chamfer 4112.

[0046] Reference Figure 2 and 3 As shown, another slot 4111 is symmetrically arranged on the other side of the insertion rod 411. The slots 4111 are arranged on both sides of the insertion rod 411, and the auxiliary wheel assemblies 4 on both sides of the bicycle can be universal, regardless of the left and right auxiliary wheel assemblies 4, thereby improving the user experience.

[0047] Reference Figure 2 and 3 As shown, when one side of the receiving groove 342 of the buckle 34 is inserted into the clamping groove 4111, the end of the insertion rod 411 is just inserted to the end of the sleeve 33. In this way, the supporting force generated by the auxiliary wheel assembly 4 is mainly concentrated on the end of the insertion rod 411, which effectively prevents the clamping groove 4111 from pushing one side of the buckle 34 to deform during the supporting process, thereby improving the service life of the buckle 34.

[0048] Reference Figure 2 and 3 As shown, specifically, a limiting protrusion 332 is provided on the outer side of the through slot 331, and the inner ring of the other end of the elastic member 35 can be inserted into the limiting protrusion 332 to form a limit. One end of the elastic member 35 can be inserted into the second protrusion 343, and the inner ring of the other end can be inserted into the limiting protrusion 332, so that the two ends form a limit, which effectively prevents the elastic member 35 from falling off.

[0049] Reference Figure 1-3 As shown, the support rod 41 is Z-shaped, which increases the arm span of the auxiliary wheel and improves the supporting strength.

[0050] Reference Figure 1-3As shown, the support rod 41 is plate-shaped, and a shoulder 412 is provided at the connection between the support rod 41 and the insertion rod 411. Limiting grooves 311 adapted to the shoulder 412 are respectively provided on both sides of the buckle port 31. When one side of the accommodating groove 342 of the buckle 34 is inserted into the groove 4111, the shoulder 412 just hits the limiting groove 311 to further limit the position.

[0051] Reference Figure 5 As shown, this embodiment also provides a bicycle, including the above-mentioned quick-release auxiliary wheel device. The bicycle also includes a detachable crank 5, on which a pedal 6 is rotatably mounted. When the bicycle mode is switched to the balance bike mode, the user can release the limited state of the auxiliary wheel assembly 4 by pressing the release end 32, and the auxiliary wheel assembly 4 can be quickly pulled out from the buckle assembly 3, and the crank 5 is removed at the same time to switch to the balance bike mode.

[0052] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A quick-release auxiliary wheel device, characterized in that: include: A rear wheel bracket and a sprocket housing, wherein the sprocket housings are symmetrically arranged on both sides of the rear wheel bracket; A buckle assembly is provided inside the sprocket housing, a buckle port of the buckle assembly is provided at the bottom of the sprocket housing, and a release end of the buckle assembly is provided at one side of the sprocket housing; The auxiliary wheel assembly, the clamping end of the auxiliary wheel assembly is adapted to the buckle port, the clamping end of the auxiliary wheel assembly can be inserted into the buckle port, the buckle end of the buckle assembly can form a buckle connection with the clamping end of the auxiliary wheel assembly, and the release end of the buckle assembly is pressed to release the limit so that the clamping end of the auxiliary wheel assembly can be pulled out from the buckle port of the buckle assembly.

2. The quick-release auxiliary wheel device according to claim 1, characterized in that: The buckle assembly includes a sleeve, one side of which is connected to the inner wall of the sprocket housing, and the bottom of the sleeve is connected to the buckle port; a through groove that runs through the entire sleeve is provided in the middle of the sleeve; It also includes a buckle piece matched with the through slot, the buckle piece can slide along the through slot, a release hole is provided on the side wall of the sprocket housing facing the sliding direction of the buckle piece, and a first protrusion matched with the release hole is provided at one end of the buckle piece; It also includes an elastic part, a receiving groove is provided in the middle of the snap-fit ​​part, the size of the receiving groove is adapted to the inner ring of the sleeve, and a second protrusion is provided on one side of the receiving groove; one end of the elastic part can be inserted into the second protrusion to form a limit, and the other end can be against one side of the sleeve, and the elastic force of the elastic part makes one end of the snap-fit ​​part be inserted into the middle of the through groove, and the first protrusion is pushed out of the unfastening hole, and the pushed-out first protrusion is the unfastening end.

3. The quick-release auxiliary wheel device according to claim 1, characterized in that: The two sides of the rear wheel bracket are integrally formed with the sprocket shell, and the rear wheel of the bicycle is installed between the two sprocket shells. The sprocket shell includes a shell and a shell cover. The outer side of the shell is provided with an opening, and the shell cover is adapted to the opening and can be detachably connected to the opening.

4. The quick-release auxiliary wheel device according to claim 2, characterized in that: The auxiliary wheel assembly includes a support rod and a roller, one end of the support rod is detachably connected to the roller, and the other end is provided with an insertion rod adapted to the buckle port, and a groove adapted to the buckle is provided on one side of the insertion rod. The insertion rod is inserted into the receiving groove from the buckle port, and one side of the end of the insertion rod can abut against one side of the receiving groove, and the insertion is continued to overcome the elastic force of the elastic member, and the receiving groove is pushed to correspond to the inner circle of the sleeve, and the insertion rod can pass through the receiving groove until the groove reaches the position of the receiving groove, and under the elastic force of the elastic member, one side of the receiving groove of the buckle is snapped into the groove to form a buckle limit.

5. The quick-release auxiliary wheel device according to claim 4, characterized in that: Chamfers are respectively arranged on both sides of the end of the insertion rod, so that when the insertion rod is inserted into the receiving groove, one side of the receiving groove can be pushed out of the inner circle of the sleeve along the chamfer.

6. The quick-release auxiliary wheel device according to claim 4, characterized in that: Another slot is symmetrically arranged on the other side of the insertion rod.

7. The quick-release auxiliary wheel device according to claim 4, characterized in that: When one side of the receiving groove of the buckle is inserted into the clamping groove, the end of the insertion rod is just inserted to the end of the inside of the sleeve.

8. The quick-release auxiliary wheel device according to claim 4, characterized in that: A limiting protrusion is arranged on the outer side of the through groove, and the inner circle of the other end of the elastic member can be inserted into the limiting protrusion to form a limit.

9. The quick-release auxiliary wheel device according to claim 8, characterized in that: The support rod is Z-shaped.

10. A bicycle, characterized in that: A quick-release auxiliary wheel device comprising any one of claims 1-9.

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