Rear derailleur and cycling equipment

Abstract

The utility model relates to a kind of rear derailleur and cycling equipment, rear derailleur includes base assembly, connecting rod assembly and guide plate assembly, guide plate assembly includes first guide plate, second guide plate, guide wheel and tension pulley, connecting rod assembly is connected with guide wheel, guide wheel and tension pulley rotatably connect between first guide plate and second guide plate;First guide plate is located in the side close to cycling equipment wheel body;Wherein, first end face and second end face are formed on guide wheel, first end face is close to first guide plate, second end face is close to second guide plate, the distance between first end face and the center reference surface of guide wheel is less than the distance between second end face and the center reference surface of guide wheel.When rear derailleur moves to maximum freewheel piece position, the distance between spoke and first guide plate increases, which helps to reduce the risk of first guide plate winding into spoke, and is safer.

Description

Technical Field

[0001] This utility model belongs to the field of cycling equipment technology, specifically, it relates to a rear derailleur and cycling equipment. Background Technology

[0002] With the popularization and development of cycling, cycling equipment has transformed from a traditional means of transportation to sporty, mountain, and recreational models. In order to adapt to different cycling conditions and requirements, cycling equipment uses gears to change the transmission effect.

[0003] To increase freewheel speeds and improve wheelset rigidity, the gap between the largest freewheel sprocket and the spokes becomes smaller and smaller. This means that when the rear derailleur moves to the position of the largest freewheel sprocket, the gap between the rear derailleur and the spokes also becomes smaller and smaller. On bumpy roads, during high-powered pedaling, or when the bicycle's tail hook is deformed, there is a risk that the rear derailleur guide plate will get caught in the spokes, which can easily cause a safety accident. Utility Model Content

[0004] The purpose of this invention is to provide a rear derailleur and riding device to solve the problem that existing riding devices, when encountering special riding conditions, suffer from interference and low safety due to the small gap between the rear derailleur and the spokes.

[0005] To achieve the above-mentioned objectives, the present invention employs the following technical solution:

[0006] In one aspect, the present invention provides a rear derailleur, comprising:

[0007] Base component, which contains a driving component;

[0008] A linkage assembly connected to the drive element;

[0009] A guide plate assembly includes a first guide plate, a second guide plate, a guide wheel, and a tension wheel. The connecting rod assembly is connected to the guide wheel, and the guide wheel and the tension wheel are rotatably connected between the first guide plate and the second guide plate. The first guide plate is located on the side closer to the wheel body of the riding device.

[0010] The guide wheel has a first end face and a second end face. The first end face is close to the first guide plate, and the second end face is close to the second guide plate. The distance between the first end face and the center reference plane of the guide wheel is less than the distance between the second end face and the center reference plane of the guide wheel.

[0011] In some embodiments of this application, the distance d1 between the first end face and the center reference plane of the guide wheel and the distance d2 between the second end face and the center reference plane of the guide wheel satisfy: d2 / 2≤d1 <d2。

[0012] In some embodiments of this application, the first guide plate and the second guide plate are connected and fixed by a fixing part, the guide wheel is rotatably connected between the first guide plate and the second guide plate through a first shaft part, and the tensioning wheel is rotatably connected between the first guide plate and the second guide plate through a second shaft part.

[0013] In some embodiments of this application, the center reference plane of the guide wheel and the center reference plane of the tension wheel are located on the same plane, and the first guide plate includes a front guide plate section adapted to the position of the guide wheel and a rear guide plate section adapted to the position of the tension wheel.

[0014] In some embodiments of this application, a bend is formed between the front guide plate segment and the rear guide plate segment, and the distance between the front guide plate segment and the center reference surface of the guide wheel is less than the distance between the rear guide plate segment and the center reference surface of the tensioning wheel.

[0015] In some embodiments of this application, the base assembly includes a housing, the drive member is disposed within the housing, the drive member includes a drive motor and a transmission gear set connected to the output end of the drive motor, and the transmission gear set is connected to the connecting rod assembly.

[0016] In some embodiments of this application, the first guide plate and / or the second guide plate are provided with weight-reducing holes and / or weight-reducing recesses to reduce the weight of the first guide plate and / or the second guide plate.

[0017] In another aspect, the present invention also proposes a cycling device that includes the rear derailleur as described in any of the above claims.

[0018] In some embodiments of this application, the cycling device further includes:

[0019] Vehicle body;

[0020] A flywheel assembly disposed on the vehicle body, the flywheel assembly comprising a plurality of flywheel segments with the number of teeth gradually increasing along the direction close to the vehicle body;

[0021] A chain connected to the freewheel assembly, the rear derailleur used to switch the chain to be connected to different freewheel segments.

[0022] In some embodiments of this application, the flywheel, the tension wheel, and the guide wheel are all gear structures used to connect with the chain.

[0023] In some embodiments of this application, the vehicle body includes a frame and wheels, and the wheels include a wheel body, a hub, and spokes disposed between the wheel body and the hub.

[0024] Compared with the prior art, the advantages and positive effects of this utility model are:

[0025] The rear derailleur involved in this application has an asymmetrical guide wheel in the guide plate assembly. That is, the distance between the first end face near the spoke of the riding device and the center reference surface of the guide wheel is less than the distance between the second end face and the center reference surface of the guide wheel. Therefore, the first guide plate at the corresponding position is closer to the center reference surface of the guide wheel and farther away from the spoke. When the rear derailleur moves to the maximum freewheel position, the distance between the spoke and the first guide plate increases, which helps to reduce the risk of the first guide plate getting caught in the spoke, thus improving safety.

[0026] Other features and advantages of this utility model will become clearer after reading the detailed embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a structural diagram of the rear derailleur proposed in this utility model;

[0029] Figure 2 This is a split view of the rear derailleur proposed in this utility model;

[0030] Figure 3 This is a breakdown diagram of the guide plate assembly;

[0031] Figure 4 It is a 3D diagram of the guide wheel;

[0032] Figure 5 This is a diagram showing the position of the guide wheel within the guide plate assembly;

[0033] Figure 6 This is a plan view of the guide wheel;

[0034] Figure 7 yes Figure 6 AA section diagram;

[0035] Figure 8 This is a structural diagram of the first guide plate;

[0036] Figure 9 This is a structural diagram of the second guide plate;

[0037] In the picture,

[0038] 100. Base components;

[0039] 200. Linkage assembly;

[0040] 300. Guide plate assembly; 310. First guide plate; 311. Front guide plate section; 312. Rear guide plate section; 313. Bending part; 314. First shaft hole; 315. Second shaft hole; 316. Fixing hole; 317. Fixing part;

[0041] 320. Second guide plate; 321. Fixed sleeve; 322. First mating hole; 323. Second mating hole;

[0042] 330, Guide wheel; 331, First end face; 332, Second end face; 333, First shaft portion;

[0043] 340. Tensioner wheel; 341. Second shaft; 350. Center reference surface; 360. Weight reduction hole; 370. Weight reduction recess;

[0044] 400. Chain. Detailed Implementation

[0045] 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.

[0046] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0047] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0048] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, direct connections, or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0049] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0050] The following disclosure provides many different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0051] refer to Figures 1-3 This utility model proposes a rear derailleur and a riding device, the riding device including a frame, a freewheel assembly and a chain 400.

[0052] The vehicle body specifically includes a frame and wheels. The wheels are specifically divided into front wheels and rear wheels. The freewheel assembly includes multiple freewheel plates with the number of teeth gradually increasing along the defensive line close to the vehicle body. The freewheel assembly is set on the rear wheel. The chain 400 selectively connects to the corresponding freewheel plates on the derailleur assembly through the rear derailleur to achieve the purpose of gear shifting in the riding device.

[0053] A wheel consists of a wheel body, a hub, and spokes positioned between the wheel body and the hub.

[0054] When the rear derailleur moves to the maximum sprocket position, the gap between the rear derailleur and the spokes becomes smaller and smaller. Under some riding conditions, there is a risk of expansion interference or even jamming between the rear derailleur and the spokes.

[0055] The rear derailleur in the cycling device involved in this application includes a base assembly 100, a linkage assembly 200, and a guide plate assembly 300. The guide plate assembly 300 includes a first guide plate 310, a second guide plate 320, a guide wheel 330, and a tension wheel 340.

[0056] The linkage assembly 200 is connected to the guide wheel 330, and the guide wheel 330 and the tension wheel 340 are rotatably connected between the first guide plate 310 and the second guide plate 320; the first guide plate 310 is located on the side close to the wheel body of the riding device.

[0057] The guide wheel 330 is used to guide the chain 400 to the corresponding flywheel plate, and the tension wheel 340 is used to tension the chain 400.

[0058] A drive component is provided inside the base assembly 100, and the drive component is connected to the guide wheel 330 through the linkage assembly 200.

[0059] refer to Figure 4 , Figure 6 as well as Figure 7 The guide wheel 330 has a first end face 331 and a second end face 332. The first end face 331 is close to the first guide plate 310, and the second end face 332 is close to the second end face 332. The distance between the first end face 331 and the center reference surface 350 of the guide wheel 330 is less than the distance between the second end face 332 and the center reference surface 350 of the guide wheel 330.

[0060] In other words, in the rear derailleur involved in this application, the guide wheel 330 in the guide plate assembly 300 has an asymmetrical structure, that is, the distance between the first end face 331 near the spoke of the riding device and the center reference surface 350 of the guide wheel 330 is less than the distance between the second end face 332 and the center reference surface 350 of the guide wheel 330.

[0061] Therefore, the first guide plate 310 at the corresponding position is closer to the center reference plane 350 of the guide wheel 330 and further away from the spokes.

[0062] When the rear derailleur moves to the maximum freewheel position, the distance between the spokes and the first guide plate 310 increases, which helps reduce the risk of the first guide plate 310 getting caught in the spokes, resulting in higher safety.

[0063] In some embodiments of this application, the distance d1 between the first end face 331 and the center reference surface 350 of the guide wheel 330, and the distance d2 between the second end face 332 and the center reference surface 350 of the guide wheel 330, satisfy: d2 / 2≤d1 <d2。

[0064] d2 / 2≤d1, so that while ensuring the structural strength of the guide wheel 330, the distance between the guide wheel 330 and the spokes is greater, then the distance between the first guide plate 310 corresponding to the guide wheel 330 and the spokes is also greater, resulting in higher safety.

[0065] Combination Figure 5 In the installed state, since the first end face 331 and the second end face 332 are asymmetrical with respect to the central reference surface 350, the first guide plate 310 on the outer side of the first end face 331 and the second guide plate 320 on the outer side of the second end face 332 are also asymmetrical with respect to the central reference surface 350.

[0066] The distance 'a' of the first guide plate 310 from the central reference plane 350 and the distance 'b' of the second guide plate 320 from the central reference plane 350 satisfy: a <b。

[0067] refer to Figure 8 , Figure 9 In some embodiments of this application, the first guide plate 310 and the second guide plate 320 are connected and fixed by a fixing part 317.

[0068] Specifically, a relatively extended fixing sleeve 321 is formed on the first guide plate 310 or the second guide plate 320. An internal threaded hole is formed in the fixing sleeve 321. A fixing hole 316 corresponding to the position of the fixing sleeve 321 is provided on the second guide plate 320 or the first guide plate 310. The fixing part 317 is a fastening screw. The fixing part 317 passes through the fixing hole 316 and is connected to the internal threaded hole to connect and fix the first guide plate 310 and the second guide plate 320.

[0069] In addition to connecting and fixing the first guide plate 310 and the second guide plate 320, the fixed sleeve 321 also limits the distance between the first guide plate 310 and the second guide plate 320, preventing the first guide plate 310 and the second guide plate 320 from deforming during operation, causing the distance between the first guide plate 310 and the second guide plate 320 to change, and causing friction with the chain 400.

[0070] In some embodiments of this application, a fixing sleeve 321 is formed on the side of the second guide plate 320 near the first guide plate 310, a fixing hole 316 is formed on the first guide plate 310, and a fixing member passes through the fixing hole 316 on the first guide plate 310 and is connected to the fixing sleeve 321.

[0071] In other embodiments, the fixing sleeve 321 may also be formed on the side of the second guide plate 320 near the second guide plate 320, the fixing hole 316 is formed on the second guide plate 320, and the fixing part 317 passes through the fixing hole 316 on the second guide plate 320 and connects to the fixing sleeve 321 of the first guide plate 310.

[0072] In some embodiments, the guide wheel 330 is rotatably connected between the first guide plate 310 and the second guide plate 320 via a first shaft portion 333.

[0073] Specifically, a first shaft hole 314 is provided on the first guide plate 310, a first mating hole 322 is provided on the second guide plate 320 at the corresponding position, a first shaft part 333 is connected to the first shaft hole 314 and the first mating hole 322, and a guide wheel 330 is connected to the first shaft part 333.

[0074] A second shaft hole 315 is provided on the first guide plate 310, and a second mating hole 323 is provided at the corresponding position on the second guide plate 320. The second shaft part 341 is connected to the second shaft hole 315 and the second mating hole 323, and the tensioning wheel 340 is connected to the second shaft part 341.

[0075] The tensioning wheel 340 is rotatably connected between the first guide plate 310 and the second guide plate 320 via the second shaft 341.

[0076] In some embodiments of this application, the center reference surface 350 of the guide wheel 330 and the center reference surface 350 of the tension wheel 340 are located on the same plane to ensure smooth conveying of the chain 400.

[0077] The first guide plate 310 includes a front guide plate section 311 adapted to the position of the guide wheel 330 and a rear guide plate section 312 adapted to the position of the tension wheel 340.

[0078] In some embodiments of this application, a bend 313 is formed between the front guide plate segment 311 and the rear guide plate segment 312. The bend 313 causes the front guide plate segment 311 to bend toward the guide wheel 330, so that the distance between the front guide plate segment 311 and the center reference surface 350 of the guide wheel 330 is less than the distance between the rear guide plate segment 312 and the center reference surface 350 of the tension wheel 340.

[0079] In some embodiments of this application, weight-reducing holes 360 and / or weight-reducing recesses 370 are formed on the first guide plate 310 and / or the second guide plate 320 to reduce the weight of the first guide plate 310 and / or the second guide plate 320.

[0080] Specifically, multiple weight-reducing holes 360 of different shapes are provided at intervals on the first guide plate 310. The weight-reducing holes 360 are through holes, so that the first guide plate 310 can reduce its own weight while meeting the installation strength requirements.

[0081] The second guide plate 320 is provided with weight reduction holes 360, and multiple weight reduction recesses 370 are also provided at intervals on the inner side of the second guide plate 320 near the first guide plate 310. The weight reduction recesses 370 are grooves extending away from the first guide plate 310 to reduce the weight of the second guide plate 320.

[0082] In some embodiments of this application, the base assembly 100 includes a housing, a drive member is disposed within the housing, the drive member includes a drive motor and a transmission gear set connected to the output end of the drive motor, and the transmission gear set is connected to the connecting rod assembly 200.

[0083] The connection and drive of the drive component, connecting rod, and guide wheel 330 within the base assembly 100 are existing technologies and are not the focus of this application; therefore, they will not be described in detail here.

[0084] In this application, the guide wheel 330 in the guide plate assembly 300 is made into an asymmetrical structure. Under a preset thickness, the guide wheel 330 minimizes the distance between the first end face 331 and the center reference surface 350 as much as possible, thereby increasing the safety clearance between the corresponding position of the first guide plate 310 and the spokes.

[0085] Whenever possible, the various aspects and features described and shown in the specification can be applied individually, and these individual aspects can serve as the subject of a divisional application.

[0086] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0087] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A rear derailleur, characterized in that, include: Base component, which contains a driving component; A linkage assembly connected to the drive element; A guide plate assembly includes a first guide plate, a second guide plate, a guide wheel, and a tension wheel. The connecting rod assembly is connected to the guide wheel, and the guide wheel and the tension wheel are rotatably connected between the first guide plate and the second guide plate. The first guide plate is located on the side closer to the wheel body of the riding device. The guide wheel has a first end face and a second end face. The first end face is close to the first guide plate, and the second end face is close to the second guide plate. The distance between the first end face and the center reference plane of the guide wheel is less than the distance between the second end face and the center reference plane of the guide wheel.

2. The rear derailleur according to claim 1, characterized in that, The distance d1 between the first end face and the center reference plane of the guide wheel and the distance d2 between the second end face and the center reference plane of the guide wheel satisfy: d2 / 2≤d1<d2.

3. The rear derailleur according to claim 1, characterized in that, The first guide plate and the second guide plate are connected and fixed together by a fixing part. The guide wheel is rotatably connected between the first guide plate and the second guide plate through a first shaft part. The tensioning wheel is rotatably connected between the first guide plate and the second guide plate through a second shaft part.

4. The rear derailleur according to claim 1, characterized in that, The center reference plane of the guide wheel and the center reference plane of the tension wheel are located on the same plane. The first guide plate includes a front guide plate section adapted to the position of the guide wheel and a rear guide plate section adapted to the position of the tension wheel.

5. The rear derailleur according to claim 4, characterized in that, A bend is formed between the front guide plate section and the rear guide plate section, and the distance between the front guide plate section and the center reference surface of the guide wheel is less than the distance between the rear guide plate section and the center reference surface of the tensioning wheel.

6. The rear derailleur according to claim 1, characterized in that, The base assembly includes a housing, and the drive component is disposed within the housing. The drive component includes a drive motor and a transmission gear set connected to the output end of the drive motor. The transmission gear set is connected to the connecting rod assembly.

7. The rear derailleur according to claim 1, characterized in that, The first guide plate and / or the second guide plate are provided with weight-reducing holes and / or weight-reducing recesses to reduce the weight of the first guide plate and / or the second guide plate.

8. A cycling device, characterized in that, Includes the rear derailleur as described in any one of claims 1-7.

9. The cycling device according to claim 8, characterized in that, Also includes: Vehicle body; A flywheel assembly disposed on the vehicle body, the flywheel assembly comprising a plurality of flywheel segments with the number of teeth gradually increasing along the direction close to the vehicle body; A chain connected to the freewheel assembly, the rear derailleur used to switch the chain to be connected to different freewheel segments.

10. The cycling device according to claim 9, characterized in that, The flywheel, the tension wheel, and the guide wheel are all gear structures used to connect with the chain.

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