Flywheel adjusting mechanism and balance car

Abstract

The utility model belongs to the technical field of child balance cars, and discloses a flywheel adjusting mechanism which comprises a rear wheel support and chain wheel shells, and the chain wheel shells are symmetrically arranged on the two sides of the rear wheel support. The inner walls of the two chain wheel shells are each provided with a through stroke groove. The flywheel is detachably mounted between the two stroke grooves; and the adjusting assemblies are arranged on the inner walls of the two chain wheel shells correspondingly, and the flywheel can be pushed through the adjusting assemblies so that the flywheel can slide along the stroke grooves. The adjusting assemblies are arranged on the inner walls of the two chain wheel shells respectively, the adjusting assemblies can push the flywheels so that the flywheels can adjust the positions in the stroke grooves and adjust the tightness degree of the chain, the adjusting assemblies are hidden in the chain wheel shells, no protrusions exist outside the chain wheel shells, the feet cannot be scratched when the feet of a child are put away, and the use safety is improved.

Description

Technical Field

[0001] The utility model relates to a flywheel regulating mechanism and a balancing vehicle, belonging to the technical field of children's balancing vehicles. Background Art

[0002] Among the existing products, there are designs that combine children's balance bikes and bicycles 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 learn how to maintain balance through balance bikes first, and then transition to riding bicycles with training wheels. The training wheels can help children gradually adapt to the sense of balance on bicycles and prepare for their transition to bicycles without training wheels. Traditional bicycle teaching methods usually recommend using bicycles 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 bicycles and adapt to bicycles without training wheels more quickly, so that they can master riding skills more safely and effectively.

[0003] The existing bicycle chain tension adjustment method usually sets a pull rod and an adjustment nut outside the sprocket housing. When the bicycle is transformed into a balance bike mode after the training wheels and cranks are removed, the pull rod and the adjustment nut are still retained outside the sprocket housing. Children can easily get caught on the pull rod when retracting their feet, which may cause injury. Utility Model Content

[0004] In view of the deficiencies of the above-mentioned prior art, the purpose of the present invention is to provide a flywheel adjustment mechanism and a balancing car. Adjustment components are respectively provided on the inner walls of the two sprocket housings. The adjustment components can push the flywheel so that the flywheel can adjust its position in the stroke groove and adjust the tightness of the chain. Moreover, the adjustment components are hidden in the sprocket housing, and there are no protrusions outside the sprocket housing. Children will not be scratched when retracting their feet, thereby improving safety in use.

[0005] To achieve the above-mentioned purpose, the utility model provides a flywheel adjustment mechanism, comprising: a rear wheel bracket and a sprocket housing, wherein the sprocket housings are symmetrically arranged on both sides of the rear wheel bracket; the inner walls of the two sprocket housings are respectively provided with penetrating travel grooves; also comprising a flywheel, wherein the flywheel is detachably installed between the two travel grooves; an adjustment component, wherein the inner walls of the two sprocket housings are respectively provided with adjustment components, and the flywheel can be pushed by the adjustment component so that the flywheel can slide along the travel groove.

[0006] Furthermore, as a more preferred embodiment of the utility model, the adjustment assembly includes a screw and a nut, and the screw is adapted to the nut; a U-shaped slot is provided on one side of the travel groove, and a receiving slot adapted to the nut is provided in the U-shaped slot, the nut can be inserted into the receiving slot, the screw is threadedly connected to the nut, the screw can pass through the U-shaped slot, and the screw is adapted to the direction of movement of the flywheel in the travel groove along the extension and contraction direction of the nut.

[0007] Further, as a more preferred embodiment of the utility model, the flywheel includes a flywheel body, a gear and a fixed shaft, the flywheel body is arranged between two travel grooves, and the fixed shaft passes through one travel groove, the flywheel body and the other travel groove in sequence;

[0008] A gear is arranged in a sprocket housing, and the gear is connected to a fixed shaft through a bearing A. One side of the gear is connected to a rotating end of one end of a flywheel body through a sleeve, and the other side fixes the inner ring of the bearing A through a limit nut; a bearing B is installed on the sleeve, and a shoulder is arranged on the sleeve to press against the inner ring of one side of the bearing B, and the outer ring of the other side of the bearing B is clamped into the travel groove, and the position of the adjustment component close to one end of the gear corresponds to the outer ring of the bearing B, and the position of the adjustment component far from one end of the gear corresponds to the fixed shaft;

[0009] The rotating end of the other end of the flywheel body is connected to the fixed shaft through another bearing A. The inner ring of the other bearing A is equipped with another sleeve that abuts against the outer side of another stroke groove. The inner side of the other stroke groove is connected to the fixed shaft through another limit nut.

[0010] Furthermore, as a more preferred embodiment of the present invention, an adjustment through slot is provided on the other side of the U-shaped slot.

[0011] Furthermore, as a more preferred embodiment of the present invention, the screw rod is an external hexagonal bolt.

[0012] Furthermore, as a more preferred embodiment of the present invention, the screw rod is a hexagon socket bolt.

[0013] Furthermore, as a more preferred embodiment of the present invention, the travel groove close to the gear side is provided with a stepped groove matched with the outer ring of the bearing B.

[0014] Furthermore, as a more preferred embodiment of the utility model, the sprocket housing includes a shell and a shell cover, the outer side of the shell is provided with an opening, the shell cover is adapted to the opening and can be detachably connected to the opening; the flywheel is arranged in the shell and is sealed by the shell cover.

[0015] Furthermore, as a more preferred embodiment of the utility model, a plurality of card slots A are provided on the top of the shell cover, a plurality of card buckle protrusions A are provided on the bottom, and a card slot B and a card buckle protrusion B matching the card slots A and the card buckle protrusions A are provided on the opening of the shell.

[0016] Based on the same inventive concept, the utility model also provides a balancing vehicle, including the flywheel adjustment mechanism described above.

[0017] Compared with the prior art, the beneficial effects are:

[0018] 1. The utility model provides adjustment components on the inner walls of the two sprocket housings respectively. The adjustment components can push the flywheel so that the flywheel can adjust the position in the stroke groove and adjust the tightness of the chain. Moreover, the adjustment components are hidden in the sprocket housings. There are no protrusions outside the sprocket housings, so that children will not be scratched when retracting their feet, thereby improving safety in use.

[0019] 2. The adjusting assembly in the utility model includes a screw and a nut. During installation, the screw can be screwed into the nut first, and then the whole can be inserted into the receiving groove of the U-shaped slot along the nut. The screw can pass through the U-shaped slot to the flywheel to adjust the position of the flywheel and the tightness of the pulling section chain. The screw and nut have a simple structure and are easy to install.

[0020] 3. The position of the adjusting assembly in the utility model corresponds to the outer ring of the bearing B, and the position of the adjusting assembly is staggered with the bicycle chain, which will not affect the transmission of the chain.

[0021] 4. The flywheel in the utility model includes a flywheel body, a gear and a fixed shaft. The flywheel body is clamped between the travel grooves of the two sprocket housings through the fixed shaft. The two ends of the fixed shaft are respectively locked and fixed by limit nuts. In particular, the limit nut located at one end of the gear is used to lock the inner ring of the bearing A arranged on the inner ring of the gear. The shaft sleeve of the gear is provided with a shoulder, which presses against the inner ring on one side of the bearing B. The limit nut locks the bearing A, the gear and the bearing B at this end of the flywheel body; the limit nut and the bearing B at the other end of the flywheel body clamp the flywheel body between the two travel grooves, and the rotating part of the flywheel body will not contact the sprocket housing.

[0022] 5. The purpose of setting the adjustment slot in the utility model is that, firstly, the tightness of the chain in the sprocket housing can be observed through the adjustment slot; secondly, a tool can pass through the adjustment slot to adjust the screw and the tightness of the chain; thirdly, lubricating oil can be added to the chain in the sprocket housing through the adjustment slot.

[0023] 6. The purpose of using a stepped groove in the travel groove close to the gear in the utility model is that the outer ring of the bearing B can abut against the upper and lower sides of the stepped groove, and the vertical direction is limited. The position of the flywheel body is adjusted by the screw in the horizontal direction, the tightness of the chain is determined, and then the limit nut away from the gear end is locked.

[0024] 7. A receiving groove for installing a nut is further provided in the U-shaped slot of the utility model. The purpose is that the receiving groove can clamp the two opposite end faces of the nut so that when the screw is rotated, the nut will not rotate relatively, and the rotating screw can be effectively ejected. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Schematic diagram of the structure of the flywheel adjustment mechanism in the embodiment.

[0026] Figure 2 Schematic diagram of the structure of the adjustment component in the embodiment.

[0027] Figure 3 Schematic diagram of the structure of the flywheel installation in the embodiment.

[0028] Figure 4 It is a schematic diagram of the structure in which a gear is arranged in a sprocket housing in an embodiment.

[0029] Figure 5 It is a schematic diagram of the structure in which an adjustment assembly is arranged in another sprocket housing in an embodiment.

[0030] Figure 6 Schematic diagram of the structure of the balance car in the embodiment.

[0031] Reference numerals:

[0032] 1-Rear wheel bracket;

[0033] 2-sprocket housing, 21-travel groove, 211-step groove, 22-U-shaped slot, 221-accommodating slot, 23-adjusting slot, 24-housing, 25-housing cover;

[0034] 3-flywheel, 31-flywheel body, 32-gear, 321-bearing groove, 322-shaft sleeve, 3221-shaft shoulder, 33-fixed shaft, 34-bearing A, 35-limiting nut, 36-bearing B;

[0035] 4-adjusting assembly, 41-screw rod, 42-screw rod. DETAILED DESCRIPTION

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] Example

[0042] The present embodiment is intended to promote a solution to the existing problem that the tension of a bicycle chain is usually adjusted by setting a pull rod and an adjusting screw outside the sprocket housing. When the bicycle is transformed into a balance bike mode after the training wheels and cranks are removed, the pull rod and the adjusting screw are still retained outside the sprocket housing. Children are easily caught on the pull rod when retracting their feet, which may cause a risk of injury.

[0043] In this embodiment, adjusting components 4 are respectively provided on the inner walls of the two sprocket housings 2. The adjusting components 4 can push the flywheel 3 so that the flywheel 3 can adjust its position in the travel groove 21 to adjust the tightness of the chain. In addition, the adjusting components 4 are hidden in the sprocket housing 2. There is no protrusion outside the sprocket housing 2, so children will not be scratched when retracting their feet, thereby improving safety in use.

[0044] Reference Figure 1As shown, a flywheel adjustment mechanism comprises: a rear wheel bracket 1 and a sprocket housing 2, wherein the sprocket housings 2 are symmetrically arranged on both sides of the rear wheel bracket 1; the inner walls of the two sprocket housings 2 are respectively provided with penetrating travel grooves 21; further comprising a flywheel 3, wherein the flywheel 3 is detachably installed between the two travel grooves 21; and an adjustment component 4, wherein the inner walls of the two sprocket housings 2 are respectively provided with adjustment components 4, and the flywheel 3 can be pushed by the adjustment component 4 so that the flywheel 3 can slide along the travel groove 21.

[0045] Reference Figure 2 As shown, in some embodiments, the adjustment component 4 includes a screw 41 and a screw 42, and the screw 41 is adapted to the screw 42; a U-shaped slot 22 is provided on one side of the travel groove 21, and a receiving slot 221 adapted to the screw 42 is provided in the U-shaped slot 22, and the receiving slot 221 can be inserted into the screw 42, and the screw 41 is threadedly connected with the screw 42, and the screw 41 can pass through the U-shaped slot 22, and the screw 41 is adapted to the direction of movement of the flywheel 3 in the travel groove 21 along the extension and retraction direction of the screw 42.

[0046] Reference Figure 3 As shown, in some embodiments, the flywheel 3 includes a flywheel body 31, a gear 32 and a fixed shaft 33, the flywheel body 31 is disposed between two travel grooves 21, and the fixed shaft 33 passes through one travel groove 21, the flywheel body 31 and the other travel groove 21 in sequence;

[0047] A gear 32 is arranged in a sprocket housing 2, and the gear 32 is connected to a fixed shaft 33 through a bearing A34. One side of the gear 32 is connected to a rotating end of one end of a flywheel body 31 through a sleeve 322 (the sleeve 322 is fixedly connected to the gear 32, and a bearing groove 321 for mounting the bearing A34 is arranged in the middle of the gear 32), and the inner ring of the bearing A34 is fixed to the other side through a limit nut 35; a bearing B36 is installed on the sleeve 322, and a shaft shoulder 3221 is arranged on the sleeve 322 to press against the inner ring of one side of the bearing B36, and the outer ring of the other side of the bearing B36 is clamped to the travel groove 21, and the position of the adjustment component 4 close to one end of the gear 32 corresponds to the outer ring of the bearing B36, and the position of the adjustment component 4 away from one end of the gear 32 corresponds to the fixed shaft 33;

[0048] The rotating end of the other end of the flywheel body 31 is connected to the fixed shaft 33 through another bearing A34. The inner ring of the other bearing A34 is equipped with another sleeve 322 to abut against the outer side of the other stroke groove 21. The inner side of the other stroke groove 21 is connected to the fixed shaft 33 through another limit nut 35.

[0049] Reference Figure 1-5 As shown, in some embodiments, an adjustment slot 23 is provided on the other side of the U-shaped slot 22 .

[0050] In some embodiments, the screw rod 41 is a hexagonal bolt.

[0051] In some embodiments, the screw rod 41 is a hexagon socket head bolt.

[0052] Reference Figure 1-4 As shown, in some embodiments, the travel groove 21 close to the side of the gear 32 is provided with a stepped groove 211 adapted to the outer ring of the bearing B36.

[0053] Reference Figure 1 As shown, in some embodiments, the sprocket housing 2 includes a shell 24 and a shell cover 25. The outer side of the shell 24 is provided with an opening, and the shell cover 25 is adapted to the opening and can be detachably connected to the opening; the flywheel 3 is arranged in the shell 24 and is sealed by the shell cover 25.

[0054] Reference Figure 1 As shown, in some embodiments, the top of the shell cover 25 is provided with a plurality of slots A, the bottom is provided with a plurality of snap protrusions A, and the opening of the shell 24 is provided with snap protrusions B and slots B that are compatible with the slots A and snap protrusions A.

[0055] Reference Figure 6 As shown, this embodiment also provides a balancing vehicle, comprising the flywheel adjustment mechanism as claimed above.

[0056] 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 flywheel adjustment mechanism, 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; The inner walls of the two sprocket housings are respectively provided with penetrating travel grooves; It also includes a flywheel, which is detachably mounted between the two stroke grooves; Adjustment components: the inner walls of the two sprocket housings are respectively provided with adjustment components, and the flywheel can be pushed by the adjustment components so that the flywheel can slide along the travel groove.

2. The flywheel adjustment mechanism according to claim 1, characterized in that: The adjusting component includes a screw and a nut, and the screw is adapted to the nut; a U-shaped slot is provided on one side of the travel groove, and a receiving slot adapted to the nut is provided in the U-shaped slot, the nut can be inserted into the receiving slot, the screw is threadedly connected to the nut, the screw can pass through the U-shaped slot, and the screw is adapted to the direction of movement of the flywheel in the travel groove along the extension and contraction direction of the nut.

3. The flywheel adjustment mechanism according to claim 1, characterized in that: The flywheel comprises a flywheel body, a gear and a fixed shaft, wherein the flywheel body is arranged between two travel grooves, and the fixed shaft passes through one travel groove, the flywheel body and the other travel groove in sequence; A gear is arranged in a sprocket housing, and the gear is connected to a fixed shaft through a bearing A. One side of the gear is connected to a rotating end of one end of a flywheel body through a sleeve, and the other side fixes the inner ring of the bearing A through a limit nut; a bearing B is installed on the sleeve, and a shoulder is arranged on the sleeve to press against the inner ring of one side of the bearing B, and the outer ring of the other side of the bearing B is clamped into the travel groove, and the position of the adjustment component close to one end of the gear corresponds to the outer ring of the bearing B, and the position of the adjustment component far from one end of the gear corresponds to the fixed shaft; The rotating end of the other end of the flywheel body is connected to the fixed shaft through another bearing A. The inner ring of the other bearing A is equipped with another sleeve that abuts against the outer side of another stroke groove. The inner side of the other stroke groove is connected to the fixed shaft through another limit nut.

4. The flywheel adjustment mechanism according to claim 2, characterized in that: An adjustment through slot is arranged on the other side of the U-shaped slot.

5. The flywheel adjustment mechanism according to claim 4, characterized in that: The screw rod is an external hexagonal bolt.

6. The flywheel adjustment mechanism according to claim 2 or 4, characterized in that: The screw is a hexagon socket bolt.

7. The flywheel adjustment mechanism according to claim 3, characterized in that: The travel groove close to the gear side is provided with a stepped groove matched with the outer ring of the bearing B.

8. The flywheel adjustment mechanism according to claim 3, characterized in that: The sprocket housing comprises a shell and a shell cover. An opening is arranged on the outer side of the shell. The shell cover is matched with the opening and is detachably connected to the opening. The flywheel is arranged in the shell and is sealed by the shell cover.

9. The flywheel adjustment mechanism according to claim 3, characterized in that: The top of the shell cover is provided with a plurality of card slots A, the bottom is provided with a plurality of card buckle protrusions A, and the opening of the shell body is provided with card buckle protrusions B and card slots B matched with the card slots A and the card buckle protrusions A.

10. A balancing vehicle, characterized in that: The invention comprises a flywheel adjustment mechanism as described in any one of claims 1 to 9.

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