Tower footing, extended tower footing and flywheel tower footing module

Abstract

The tower footing, extension tower footing and flywheel tower footing module comprises a tower footing body, a first mounting surface is formed at a first end part of the tower footing body, a first mounting part is formed at a second end part of the tower footing body, the tower footing body is used for being sleeved outside a wheel axle, and a flywheel is used for being sleeved outside the tower footing body; a second mounting part is formed at the first end part of the tower footing end cover, and a second mounting surface is formed at the second end part of the tower footing end cover; when the first installation part and the second installation part are in an installation state, the first end of the flywheel abuts against the first installation face, the second end of the flywheel abuts against the second installation face, an annular groove is formed between the first installation part and the second installation face, and the annular groove is used for containing and installing the second end of the flywheel. The utility model can be expanded and applied to 10T and 9T flywheels, so that the applicable flywheel size of the tower footing is increased, the bicycle can adapt to the power requirements of more use scenes, and the use experience of customers is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of bicycle, specifically relates to a tower base, extension tower base and flywheel tower base module. BACKGROUND

[0002] Tower base is an important component in the transmission system of a bicycle. It is a cylindrical structure with specific slots or splines installed on the rear wheel shaft of the bicycle for mounting the flywheel. It is a key component that connects the rear wheel hub and the flywheel, enabling the flywheel to work in coordination with the rear wheel to achieve the function of speed change. The tower base provides a stable mounting base for the flywheel, ensuring that the flywheel maintains a stable position during rotation, allowing the chain to accurately engage with the teeth of the flywheel, thereby achieving smooth speed change and power transmission. During cycling, the power generated by pedaling is transmitted to the flywheel through the chain, and then to the tower base, which ultimately transmits power to the rear wheel to drive the bicycle forward. By coordinating with flywheels of different gear ratios and operating the speed change system, the chain is switched between flywheels of different gear ratios, changing the transmission ratio of the bicycle to achieve different cycling speeds to adapt to different road conditions and cycling needs.

[0003] HG tower base is a widely used tower base standard, suitable for 12-speed and below road bike flywheels. The minimum compatible flywheel gear number is 11T, and it cannot be compatible with 10T and 9T flywheel gear numbers, because the inner diameter of 10T and 9T flywheels is smaller than the spline root diameter of HG tower base, obviously cannot be assembled.

[0004] Therefore, the development of a tower base, extension tower base and flywheel tower base module can expand its application to 10T and 9T flywheels, thereby increasing the size of the flywheel that the tower base can be used for, allowing the bicycle to adapt to more power needs in different use scenarios and improve the user experience. Utility model content

[0005] The utility model aims at providing a tower base, extension tower base and flywheel tower base module, which can be applied to 10T and 9T flywheels to increase the size of the flywheel that the tower base can be used for, allowing the bicycle to adapt to more power needs in different use scenarios and improve the user experience.

[0006] To achieve the above utility model purposes, the utility model adopts the following technical solutions:

[0007] The utility model provides a tower base, which comprises:

[0008] a tower base body, a first end of the tower base body is formed with a first mounting surface, a second end of the tower base body is formed with a first mounting portion, the tower base body is used for sleeving outside a wheel shaft, and a flywheel is used for sleeving outside the tower base body; a distance between the first mounting surface and an end surface of the second end of the tower base body ranges from 34 mm to 36 mm;

[0009] a tower base end cover, a first end of the tower base end cover is formed with a second mounting portion, and a second end of the tower base end cover is formed with a second mounting surface; an outer diameter of the second mounting portion ranges from 22 mm to 26 mm;

[0010] wherein, in a state where the first mounting portion and the second mounting portion are mounted, a first end of the flywheel abuts against the first mounting surface, a second end of the flywheel abuts against the second mounting surface, and an annular groove is formed between the second end of the tower base body and the second mounting surface, and the annular groove is used for accommodating the second end of the flywheel.

[0011] In some embodiments of the present application, the first mounting portion is an internal thread portion formed on the second end of the tower base body;

[0012] the second mounting portion is an external thread portion formed on the first end of the tower base end cover;

[0013] the internal thread portion is threadedly connected with the external thread portion.

[0014] In some embodiments of the present application, a first annular boss is formed on the second end of the tower base end cover, a side of the first annular boss close to the second end of the flywheel is formed with the second mounting surface, and an annular portion is formed between the first annular boss and the external thread portion;

[0015] in the state where the first mounting portion and the second mounting portion are mounted, the first mounting portion, the annular portion and the second mounting surface surround to form the annular groove.

[0016] In some embodiments of the present application, a dismounting portion is formed on an inner wall of the tower base end cover, and an operator rotates the dismounting portion to drive the tower base end cover to rotate.

[0017] In another aspect, the present application also relates to an extended tower base, comprising:

[0018] a tower base body, a first end of the tower base body is formed with a first mounting surface, a second end of the tower base body is formed with a first mounting portion, the tower base body is used for sleeving outside a wheel shaft, and a flywheel is used for sleeving outside the tower base body; a distance between the first mounting surface and an end surface of the second end of the tower base body ranges from 34 mm to 36 mm;

[0019] a tower base end cover, a first end of the tower base end cover is formed with a second mounting portion;

[0020] The extension part is connected to the tower base body by inserting a plurality of positioning pins into a plurality of positioning holes.

[0021] In the mounted state of the first mounting part and the second mounting part, the tower base body and the extension part are used to be sleeved outside the wheel shaft, the flywheel is used to be sleeved outside the tower base body and the extension part, and the end of the flywheel is used to abut against the first mounting surface.

[0022] In some embodiments of the present application, the extension part is a circular ring structure, the extension part is coaxially arranged with the tower base body, the second end of the flywheel is used to be sleeved outside the extension part, and the extension part is used to be sleeved outside the wheel shaft.

[0023] In some embodiments of the present application, the tower base body comprises a tower base cylinder and an outer clamping part formed on the outer wall of the tower base cylinder, and the outer wall of the tower base cylinder is arranged in alignment with the outer wall of the extension part.

[0024] In some embodiments of the present application, the inner diameter of the extension part is greater than the outer diameter of the second mounting part, and the second mounting part is connected to the first mounting part through the extension part.

[0025] In another aspect, the utility model also relates to a flywheel tower base module, comprising:

[0026] The tower base of any one of the above;

[0027] The flywheel is sleeved outside the tower base, the first end of the flywheel abuts against the first mounting surface, and the second end of the flywheel abuts against the second mounting surface.

[0028] In some embodiments of the present application, the second end of the flywheel is accommodated at the annular groove.

[0029] Compared with the prior art, the utility model has the advantages and positive effects that:

[0030] The first mounting part is formed on the tower base body, the second mounting part is formed on the tower base end cover, the tower base body and the tower base end cover are connected through the first mounting part and the second mounting part, the first mounting surface and the second mounting surface clamp the flywheel therebetween, the annular groove is formed between the first mounting part and the second mounting surface when the first mounting part and the second mounting part are in the mounting state, the annular groove accommodates the second end part of the installed flywheel, the second end part of the flywheel comprises 10T and 9T flywheel pieces with small inner diameters, the 10T and 9T flywheel pieces of the second end part of the flywheel can be installed at the annular groove because the outer wall diameter of the annular groove is smaller than the outer wall diameter of the tower base body, the flywheel piece size of the tower base installed flywheel is expanded to 10T and 9T flywheels, so that the bicycle can adapt to the power demand of more use scenarios, and the use experience of customers is improved.

[0031] Other features and advantages of the present application will become more apparent from the following detailed description when read in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0033] Figure 1 is a whole structure schematic diagram of one embodiment of a flywheel tower base module proposed by the present application;

[0034] Figure 2 is a structure schematic diagram two of one embodiment of a flywheel tower base module proposed by the present application;

[0035] Figure 3 is a front view of one embodiment of a flywheel tower base module proposed by the present application;

[0036] Figure 4 is Figure 3 a sectional view of

[0037] Figure 5 is Figure 4 a local schematic diagram of A in

[0038] Figure 6 is a front view of a tower base body and an extension of one embodiment proposed by the present application;

[0039] Figure 7is a sectional view of the tower basic body of an embodiment provided by the utility model;

[0040] Figure 8 is a front view of the tower base of an embodiment provided by the utility model;

[0041] Figure 9 is Figure 6 a sectional view;

[0042] Figure 10 is Figure 9 a local schematic view at B in the figure;

[0043] Figure 11 is a whole structure schematic view of the flywheel piece of an embodiment provided by the utility model;

[0044] Figure 12 is a whole structure schematic view of the gasket of an embodiment provided by the utility model;

[0045] Figure 13 is a sectional view of the inner diameter contraction flywheel module and the second flywheel piece of an embodiment provided by the utility model;

[0046] Figure 14 is a structure schematic view of the inner diameter contraction flywheel module and the second flywheel piece of an embodiment provided by the utility model;

[0047] Figure 15 is a structure schematic view of the tower base end cover of an embodiment provided by the utility model;

[0048] in the figure,

[0049] 100, flywheel;

[0050] 110, inner diameter contraction flywheel module;

[0051] 111, small diameter flywheel piece;

[0052] 112, connecting portion;

[0053] 120, flywheel body module;

[0054] 121, second flywheel piece;

[0055] 122, first inner clamping portion;

[0056] 1221, annular recessed portion;

[0057] 123, second inner clamping portion;

[0058] 124, third flywheel piece;

[0059] 131, first gasket;

[0060] 1311. Third inner card connector;

[0061] 132. Second gasket;

[0062] 200. Tower base;

[0063] 210. The basic structure of the tower;

[0064] 211. First mounting surface;

[0065] 212. First Installation Section;

[0066] 213. External card connector;

[0067] 2131. First external card connector;

[0068] 2132. Second external card connector;

[0069] 214. Positioning holes;

[0070] 215. Tower base column;

[0071] 216. Second annular boss;

[0072] 220. Tower base end cap;

[0073] 221. Second Installation Section;

[0074] 222. Second mounting surface;

[0075] 223. First annular boss;

[0076] 224. Disassembly section;

[0077] 230. Annular groove;

[0078] 240. Extension section;

[0079] 241. Locating pin;

[0080] 300. Wheel axle. Detailed Implementation

[0081] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0082] In the description of the application, it needs to be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0083] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the application, unless otherwise specified and limited, the meaning of "a plurality of" is two or more.

[0084] In the description of the application, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or direct connection, or indirect connection through intermediate medium. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0085] In the present application, unless otherwise explicitly specified and limited, the first feature "above" or "below" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "above", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0086] The following disclosure provides many different embodiments or examples for implementing different structures of the application. In order to simplify the disclosure of the application, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the application. In addition, the application can refer to the same reference numerals and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and / or settings discussed.

[0087] A tower base comprises a tower base body and a tower base end cover, the first end of the tower base body is formed with a first mounting surface, the second end of the tower base body is formed with a first mounting portion, the tower base body is used for sleeving outside a wheel shaft, and a flywheel is used for sleeving outside the tower base body; the first end of the tower base end cover is formed with a second mounting portion, and the second end of the tower base end cover is formed with a second mounting surface; wherein, in the state that the first mounting portion and the second mounting portion are mounted, the first end of the flywheel abuts against the first mounting surface, the second end of the flywheel abuts against the second mounting surface, and an annular groove is formed between the first mounting portion and the second mounting surface, and the annular groove is used for accommodating the second end of the flywheel.

[0088] The first mounting portion is an internal thread portion formed on the second end of the tower base body.

[0089] The second mounting portion is an external thread portion formed on the first end of the tower base end cover.

[0090] The internal thread portion is threadedly connected with the external thread portion.

[0091] The second end of the tower base end cover is formed with a first annular boss, one side of the first annular boss close to the second end of the flywheel is formed with the second mounting surface, and an annular portion is formed between the first annular boss and the external thread portion.

[0092] In the state that the first mounting portion and the second mounting portion are mounted, the first mounting portion, the annular portion and the second mounting surface surround to form the annular groove.

[0093] The tower base further comprises an extension portion, and a plurality of positioning pins are arranged on the extension portion at intervals.

[0094] A plurality of positioning holes are arranged on the second end of the tower base body at intervals.

[0095] The plurality of positioning pins are respectively inserted into the plurality of positioning holes to connect the extension portion on the tower base body, and the extension portion is accommodated in the annular groove.

[0096] The extension portion is a circular ring structure, and the extension portion is coaxially arranged with the tower base body.

[0097] The second end of the flywheel is used for sleeving outside the extension portion.

[0098] The extension portion is sleeved outside the wheel shaft.

[0099] The tower base body comprises a tower base column and an external clamping portion formed on the outer wall of the tower base column, and the outer wall of the tower base column is arranged in alignment with the outer wall of the extension portion.

[0100] The inner diameter of the extension part is greater than the outer diameter of the second mounting part, and the second mounting part is connected to the first mounting part through the extension part.

[0101] The inner wall of the tower base end cover is formed with a dismounting part, and an operator rotates the dismounting part to drive the tower base end cover to rotate.

[0102] A flywheel tower base module includes a tower base and a flywheel, the flywheel is sleeved outside the tower base, a first end of the flywheel abuts against the first mounting surface, and a second end of the flywheel abuts against the second mounting surface.

[0103] The second end of the flywheel is accommodated in the annular groove.

[0104] In some embodiments of the present application, as shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 A flywheel 100 is involved, which can be expanded to 10T and 9T flywheel piece teeth, thereby increasing the flywheel size applicable to the tower base, so that the bicycle can adapt to the power demand of more use scenarios, and improve the use experience of customers.

[0105] In some embodiments of the present application, as shown in Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 A tower base 200 is involved, which can cooperate with a flywheel expanded to 10T and 9T, and also can cooperate with a flywheel with a minimum tooth number of 11T, thereby increasing the flywheel size applicable to the tower base, so that the bicycle can adapt to the power demand of more use scenarios, and improve the use experience of customers.

[0106] In some embodiments of the present application, a lengthened tower base is designed, as shown in Figure 6 、 Figure 7 、 Figure 9 .

[0107] In some embodiments of the present application, as shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 A flywheel tower base module is involved, which includes a flywheel 100 and a tower base 200.

[0108] The flywheel 100 includes an inner diameter contraction flywheel module 110 and a flywheel body module 120.

[0109] The inner diameter contraction flywheel module 110 is formed at a first end of the flywheel 100.

[0110] The flywheel body module 120 is formed at the second end of the flywheel 100.

[0111] The first end of the flywheel 100 is disposed at one side of the flywheel 100, and the second end of the flywheel 100 is disposed at the opposite side of the flywheel 100.

[0112] The tower base 200 includes a tower base body 210 and a tower base end cover 220. The flywheel 100 is mounted between the tower base body 210 and the tower base end cover 220.

[0113] As shown in Figure 13 , Figure 14 , the inner diameter of the inner diameter contraction flywheel module 110 is not greater than the outer diameter of the tower base body 210.

[0114] The flywheel body module 120 includes a plurality of flywheel pieces with diameters gradually increasing. The plurality of flywheel pieces are sequentially sleeved on the tower base body 210. The plurality of flywheel pieces are clamped with the tower base body 210.

[0115] The inner diameter contraction flywheel module 110 is coaxially disposed with the flywheel body module 120. The inner diameter contraction flywheel module 110 is disposed on the adjacent flywheel pieces. The inner diameter contraction flywheel module 110 can rotate with the flywheel body module 120.

[0116] In some embodiments of the present application, the inner diameter contraction flywheel module 110 and the flywheel body module 120 are integrated structures.

[0117] The inner diameter contraction flywheel module 110 and the adjacent flywheel piece are integrally formed structures.

[0118] The inner diameter contraction flywheel module 110 can also be integrally formed with the adjacent plurality of flywheel pieces.

[0119] In some other embodiments of the present application, the inner diameter contraction flywheel module 110 is connected to the flywheel body module 120.

[0120] The inner diameter contraction flywheel module 110 is connected to the adjacent flywheel piece.

[0121] The inner diameter contraction flywheel module 110 can also be connected to the adjacent plurality of flywheel pieces.

[0122] In the state that the flywheel body module 120 is sleeved on the tower base body 210, the inner diameter contraction flywheel module 110 extends to the end of the tower base body 210. In the process of rotating with the tower base body 210, the flywheel body module 120 rotates with the inner diameter contraction flywheel module 110.

[0123] In some embodiments of the present application, as shown in Figure 13 , Figure 14As shown, the inner diameter contraction flywheel module 110 comprises a small-diameter flywheel piece 111 and a connecting portion 112. The inner diameter of the small-diameter flywheel piece 111 is not greater than the outer diameter of the tower base body 210, so the small-diameter flywheel piece 111 cannot be sleeved outside the tower base body 210. The small-diameter flywheel piece 111 is connected with the adjacent flywheel piece through the connecting portion 112.

[0124] In order to accommodate the inner diameter contraction flywheel module 110, the tower base body 210 and the tower base end cover 220 surround to form an annular groove 230.

[0125] The length of the tower base body 210 is shortened, so that the length of the tower base body 210 can be adapted to the length of the flywheel body module 120.

[0126] As shown in Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 12 The first end of the tower base body 210 is formed with a first mounting surface 211. The second end of the tower base body 210 is formed with a first mounting portion 212.

[0127] The distance between the first mounting surface 211 and the end surface of the second end of the tower base body 210 is in the range of 34mm to 36mm.

[0128] The tower base body 210 is sleeved outside the wheel shaft 300. The tower base body 210 rotates with the wheel shaft 300.

[0129] The flywheel body module 120 is sleeved outside the tower base body 210.

[0130] The first end of the tower base end cover 220 is formed with a second mounting portion 221. The second end of the tower base end cover 220 is formed with a second mounting surface 222.

[0131] The flywheel 100 is sleeved outside the tower base 200, the first end of the flywheel 100 abuts against the first mounting surface 211, and the second end of the flywheel 100 abuts against the second mounting surface 222. The first mounting surface 211 and the second mounting surface 222 clamp the flywheel 100 on the tower base 200.

[0132] Through the connection of the first mounting portion 212 and the second mounting portion 221, the installation of the tower base body 210 and the tower base end cover 220 is realized.

[0133] In the state that the first mounting portion 212 and the second mounting portion 221 are installed, the first end of the flywheel 100 abuts against the first mounting surface 211, and the second end of the flywheel 100 abuts against the second mounting surface 222. The first mounting surface 211 and the second mounting surface 222 clamp the flywheel 100 therebetween, thereby realizing the positioning of the flywheel 100 in the axial direction.

[0134] Specifically, the end of the inner diameter contraction flywheel module 110 abuts against the second mounting surface 222. The end of the flywheel body module 120 abuts against the first mounting surface 211.

[0135] The first mounting portion 212 and the second mounting portion 221 can be connected in a threaded connection manner.

[0136] The first mounting portion 212 is an inner threaded portion formed on the second end of the tower base body 210.

[0137] The second mounting portion 221 is an outer threaded portion formed on the first end of the tower base end cover 220.

[0138] The inner threaded portion and the outer threaded portion are in threaded connection.

[0139] The outer diameter of the second mounting portion 221 ranges from 22mm to 26mm. The outer diameter of the second mounting portion 221 is smaller than the inner diameter of the small-diameter flywheel piece 111, so that the second mounting portion 221 can pass through the inner diameter contraction flywheel module 110 and be connected with the first mounting portion 212.

[0140] In order to facilitate the mounting and dismounting between the first mounting portion 212 and the second mounting portion 221, a dismounting portion 224 is formed on the inner wall of the tower base end cover 220. An operator can use a special wrench or other tools to cooperate with the dismounting portion 224 to rotate the tower base end cover 220 through the dismounting portion 224, and then dismount the tower base end cover 220 from the tower base body 210.

[0141] An annular groove 230 is formed around the first mounting portion 212 and the second mounting surface 222. The inner diameter contraction flywheel module 110 is accommodated in the annular groove 230.

[0142] In some embodiments of the present application, a first annular boss 223 is formed on the second end of the tower base end cover 220, and the second mounting surface 222 is formed on the first annular boss 223 close to the tower base body 210.

[0143] An annular portion is formed between the first annular boss 223 and the outer threaded portion.

[0144] When the first mounting portion 212 and the second mounting portion 221 are in the mounted state, the annular groove 230 is formed between the first mounting portion 212, the connecting portion 112, and the second mounting surface 222.

[0145] The inner diameter contraction flywheel module 110 is accommodated in the annular groove 230. One side end of the inner diameter contraction flywheel module 110 abuts against the second mounting surface 222. A gap is reserved between the other side end of the inner diameter contraction flywheel module 110 and the first mounting portion 212, so as to ensure that there is sufficient operation space for the connection between the first mounting portion 212 and the second mounting portion 221.

[0146] In some embodiments of the present application, the second annular boss 216 is formed on the first end of the tower base body 210, and the first mounting surface 211 is formed on the second annular boss 216 near the tower base cover 220.

[0147] The inner diameter contraction flywheel module 110 and the flywheel body module 120 are clamped between the first annular boss 223 and the second annular boss 216.

[0148] In some embodiments of the present application, the inner wall of the small-diameter flywheel piece 111 extends to the connection portion 112 at the outer wall of the tower base cover 220. The connection portion 112 is arranged along the outer wall of the annular portion.

[0149] The flywheel piece adjacent to the small-diameter flywheel piece 111 is defined as the second flywheel piece 121. The second flywheel piece 121 is connected to the small-diameter flywheel piece 111 through the connection portion 112.

[0150] The inner wall of the second flywheel piece 121 extends along the second end of the tower base body 210 to the outer wall of the tower base cover 220 and is connected to the connection portion 112.

[0151] Specifically, the inner wall of the second flywheel piece 121 extends to the same diameter as the inner wall of the small-diameter flywheel piece 111, and the second flywheel piece 121 is connected to the small-diameter flywheel piece 111 through the connection portion 112.

[0152] In some embodiments of the present application, the flywheel 100 further comprises a plurality of spacers. The plurality of spacers are arranged between the plurality of flywheel pieces.

[0153] Specifically, the spacer adjacent to the second flywheel piece 121 is defined as the first spacer 131. Specifically, the first spacer 131 is connected to the second flywheel piece 121 away from the side of the small-diameter flywheel piece 111.

[0154] The first spacer 131 can be in an integrated structure with the second flywheel piece 121 and the small-diameter flywheel piece 111. Alternatively, the first spacer 131 can be connected to the second flywheel piece 121 and the small-diameter flywheel piece 111 in an integrated structure through welding or other connection methods.

[0155] The first spacer 131 is arranged along the axial direction of the outer wall of the tower base body 210, and therefore, the first spacer 131 is connected to the middle part of the second flywheel piece 121.

[0156] By the clamping of the first gasket 131 and the tower base body 210, the clamping of the first gasket 131, the small-diameter flywheel piece 111, the second flywheel piece 121 and the tower base body 210 as a whole is realized, so that the first gasket 131, the small-diameter flywheel piece 111, the second flywheel piece 121 as a whole rotate with the tower base body 210.

[0157] In order to realize the clamping of the tower base body 210 and the flywheel body module 120, the tower base body 210 includes a tower base column body 215 and an outer clamping portion 213 formed on the outer wall of the tower base column body 215.

[0158] As shown in Figure 2 , the outer clamping portion 213 includes a first outer clamping portion 2131 and a second outer clamping portion 2132.

[0159] The first outer clamping portion 2131 is formed on the main body outer wall of the tower base column body 215, and the second outer clamping portion 2132 is formed at the end outer wall of the tower base column body 215.

[0160] As shown in Figure 11 , the flywheel body module 120 further includes a first inner clamping portion 122, which is arranged along the inner wall of the plurality of flywheel pieces.

[0161] As shown in Figure 12 , the flywheel body module 120 further includes a second inner clamping portion 123, which is arranged along the inner wall of the plurality of gaskets.

[0162] The first inner clamping portion 122, the second inner clamping portion 123 and the first outer clamping portion 2131 are clamped.

[0163] A third inner clamping portion 1311 is formed on the inner wall of the first gasket 131. The third inner clamping portion 1311 is clamped with the second outer clamping portion 2132.

[0164] As shown in Figure 13 , Figure 14 Since the small-diameter flywheel piece 111 and the second flywheel piece 121 are both clamped with the second outer clamping portion 2132 through the first gasket 131, the third inner clamping portion 1311 is formed on the inner wall of the first gasket 131, and in order to ensure the stability of the clamping, the third inner clamping portion 1311 needs to have a certain length.

[0165] The flywheel piece adjacent to the second flywheel piece 121 is defined as a third flywheel piece 124.

[0166] The gasket adjacent to the first gasket 131 is defined as a second gasket 132.

[0167] The second pad 132 is connected with the third flywheel piece 124. The second pad 132 is connected on the side of the third flywheel piece 124 away from the second flywheel piece 121.

[0168] In order to ensure that the third inner clamping part 1311 has sufficient length, an annular recess 1221 is formed on the third flywheel piece 124 on the side close to the second flywheel piece 121. The first pad 131 can extend the length of the third inner clamping part 1311 by extending into the annular recess 1221.

[0169] In order to be able to form the annular recess 1221 in the third flywheel piece 124, the third flywheel piece 124 and the second pad 132 are in an integrated structure.

[0170] Since the first pad 131 can extend into the annular recess 1221, the thickness of the first pad 131 is limited, in order to ensure that the first pad 131 has sufficient thickness at the position where the third inner clamping part 1311 is formed, the height of the second outer clamping part 2132 needs to be lower than the height of the first outer clamping part 2131, so that the height of the third inner clamping part 1311 clamped with the second outer clamping part 2132 is less than the height of the first inner clamping part 122 and the second inner clamping part 123.

[0171] In some embodiments of the present application, the remaining pads and flywheel pieces can adopt an integrated structure, or different connection methods can be used to connect adjacent pads and flywheel pieces, or the pads and flywheel pieces can be in a split form.

[0172] The inner diameter contraction flywheel module 110 includes 10T flywheel pieces, as shown in the figure. Figure 15 As shown in the figure, through the annular groove 230 formed by the tower base body 210 and the tower base end cover 220, the outer diameter of the annular groove 230 is smaller than the inner diameter of the 10T flywheel piece, so that the use of the tower base 200 is extended to be compatible with the minimum 10T flywheel piece.

[0173] In some other embodiments of the present application, a lengthened tower base is also involved, as shown in the figure. Figure 6 、 Figure 7 、 Figure 9 As shown in the figure, the tower base 200 can also be used to install a flywheel piece with a minimum gear of 11T, and the compatibility of the above-mentioned tower base 200 needs to be ensured, and therefore the lengthened tower base includes a lengthened part 240 in addition to the tower base body 210.

[0174] The tower base body 210 is formed with a first mounting surface at the first end portion, and the inner wall of the second end portion of the tower base body 210 is formed with a first mounting part.

[0175] The tower base end cover is formed with a second mounting part at the first end portion.

[0176] A plurality of positioning pins 241 are arranged on the extension part 240 at intervals. A plurality of positioning holes 214 are arranged on the second end of the tower base 210 at intervals. The plurality of positioning pins 241 are inserted into the plurality of positioning holes 214 to connect the extension part 240 to the tower base 210, and the extension part 240 is accommodated in the annular groove 230.

[0177] Specifically, the extension part 240 can adopt a circular ring structure. The extension part 240 is coaxially arranged with the tower base 210.

[0178] In the state that the first mounting part 212 and the second mounting part 221 are mounted, the tower base 210 and the extension part 240 are both sleeved outside the wheel shaft 300. The second end of the flywheel 100 is sleeved outside the extension part 240. The flywheel 100 is sleeved outside the tower base 210 and the extension part 240.

[0179] In order to facilitate the flywheel 100 to be sleeved outside the tower base 200, the extension part 240 is not affected, and the outer wall of the extension part 240 is arranged in alignment with the outer wall of the tower base cylinder 215.

[0180] In addition, the outer diameter of the second mounting part 221 is smaller than the inner diameter of the extension part 240, so that the tower base end cover 220 can be connected to the first mounting part 212 after passing through the extension part 240.

[0181] In order to be able to install a flywheel sheet with the smallest gear of 11T, the total distance of the first mounting surface 211 and the side end surface of the extension part 240 in the axial direction ranges from 36mm to 37.5mm.

[0182] In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0183] As long as possible, the various aspects and features described and shown in the specification can be applied alone, and these individual aspects can be the subject of a divisional application.

[0184] The above is only a specific implementation manner of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A tower base, characterized in that, include: The tower body has a first mounting surface at its first end and a first mounting portion at its second end. The tower body is used to be fitted onto a wheel axle, and a flywheel is used to be fitted onto the tower body. The distance between the first mounting surface and the end face of the second end of the tower body is between 34 mm and 36 mm. The tower base end cap has a second mounting portion formed at its first end, and a second mounting surface formed at its second end; the outer diameter of the second mounting portion ranges from 22 mm to 26 mm. In the case where the first mounting part and the second mounting part are in the mounted state, the first end of the flywheel abuts against the first mounting surface, the second end of the flywheel abuts against the second mounting surface, and an annular groove is formed between the second end of the tower body and the second mounting surface, the annular groove being used to accommodate the second end of the flywheel.

2. The tower base according to claim 1, characterized in that, The first mounting portion is an internally threaded portion formed on the second end of the tower body; The second mounting portion is an externally threaded portion formed on the first end of the tower base end cap; The internal threaded portion is threadedly connected to the external threaded portion.

3. The tower base according to claim 2, characterized in that, A first annular boss is formed on the second end of the tower base end cap. A second mounting surface is formed on the side of the first annular boss near the second end of the flywheel. An annular portion is formed between the first annular boss and the external thread portion. When the first mounting part and the second mounting part are in the mounted state, the first mounting part, the annular part, and the second mounting surface surround to form the annular groove.

4. The tower base according to claim 1, characterized in that, A disassembly section is formed on the inner wall of the tower base end cover. The operator rotates the disassembly section to drive the tower base end cover to rotate.

5. An extended tower base, characterized in that, include: The tower body has a first mounting surface formed at its first end, a first mounting part formed on the inner wall of the second end of the tower body, and a plurality of positioning holes spaced apart along the circumferential direction on the side end of the second end of the tower body. The tower base end cap has a second mounting portion formed at its first end; The extension has a plurality of positioning pins spaced apart along the circumferential direction on its side end face. The plurality of positioning pins are respectively inserted into the plurality of positioning holes to connect the extension to the tower body. Wherein, when the first mounting part and the second mounting part are in the installed state, the tower base body and the extension part are used to be fitted outside the wheel axle; the flywheel is used to be fitted outside the tower base body and the extension part, and the end of the flywheel is used to abut against the first mounting surface; the total distance between the first mounting surface and the side end face of the extension part in the axial direction ranges from 36mm to 37.5mm.

6. The extended tower base according to claim 5, characterized in that, The extension is a circular structure and is coaxially arranged with the tower body. The second end of the flywheel is used to fit over the extension. The extension is fitted onto the outside of the wheel axle.

7. The extended tower base according to claim 5, characterized in that, The tower base includes a tower base column and an outer snap-fit ​​portion formed on the outer wall of the tower base column, wherein the outer wall of the tower base column is aligned with the outer wall of the extension portion.

8. The extended tower base according to claim 5, characterized in that, The inner diameter of the extension is larger than the outer diameter of the second mounting part, and the second mounting part passes through the extension and connects to the first mounting part.

9. A flywheel tower base module, characterized in that, include: The tower base as described in any one of claims 1 to 4; A flywheel is fitted outside the tower base, with its first end abutting against the first mounting surface and its second end abutting against the second mounting surface.

10. The flywheel tower base module according to claim 9, characterized in that, The second end of the flywheel is accommodated in the annular groove.

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