Flywheel assembly and range extender

Abstract

This utility model discloses a flywheel assembly and a range extender. The flywheel assembly (1) includes a flywheel (11), a gear ring (12), and a first reinforcing rib (114). The web plate (111) is provided with a connecting flange (113), which is used to connect to the crankshaft. The outer ring (112) is fitted onto the web plate (111) and connected to the web plate (111). The gear ring (12) is fitted onto the outer ring (112) and connected to the outer ring (112). The first reinforcing rib (114) is connected to the web plate (111) and extends radially along the web plate (111). Multiple first reinforcing ribs (114) are provided, and the multiple first reinforcing ribs (114) are evenly spaced along the circumference of the web plate (111). The web plate (111) has a weight-reducing hole (1111), which is located between two adjacent first reinforcing ribs (114). The flywheel assembly (1) can meet the requirements for strength and lightweight.

Description

Technical Field

[0001] This utility model belongs to the field of range extender technology, and in particular relates to a flywheel assembly and a range extender. Background Technology

[0002] The flywheel assembly is a large, disc-shaped component mounted at the rear end of the engine crankshaft and is a crucial part for transmitting power in the engine. It has a large moment of inertia, allowing it to store some of the energy generated during the power stroke to overcome resistance during other strokes and ensure smooth crankshaft rotation.

[0003] In the prior art, the web of the flywheel assembly adopts a uniform thickness design. In order to meet the strength requirements of the flywheel assembly, the web thickness is relatively large, which cannot meet the requirements for lightweighting. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in the related art.

[0005] This utility model provides a flywheel assembly, including: Flywheel, the flywheel comprising: Web plate, the web plate being provided with a connecting flange for connection to a crankshaft; and An outer ring, which is fitted onto and connected to the web plate; A gear ring, which is fitted onto and connected to the outer ring; and The first reinforcing rib is connected to the web and extends radially along the web. Multiple first reinforcing ribs are provided and are evenly spaced along the circumference of the web. The web has weight-reducing holes located between two adjacent reinforcing ribs.

[0006] The flywheel assembly provided by this utility model includes a flywheel, a gear ring, and a first reinforcing rib. The first reinforcing rib is connected to the web, which allows the web to meet the strength requirements of the flywheel assembly while maintaining a relatively small thickness. In addition, the web has weight-reducing holes, which can further reduce the weight of the web, enabling the flywheel assembly to meet the lightweight requirements.

[0007] In some embodiments, the first reinforcing rib has a first end and a second end opposite to the first end, the first end being connected to the connecting flange and the second end being connected to the outer ring.

[0008] By connecting the first end to the connecting flange and the second end to the outer ring, the length of the first reinforcing rib can be increased as much as possible. On the other hand, the connection position between the first reinforcing rib and the flywheel can be increased, further increasing the overall strength of the flywheel assembly.

[0009] In some embodiments, the width of the weight-reducing hole gradually increases along the direction from the connecting flange toward the outer ring.

[0010] By setting the width of the weight reduction hole to gradually increase along the outer ring of the connecting flange, the area of ​​the weight reduction hole can be increased as much as possible, achieving a better weight reduction effect and enabling the flywheel assembly to meet the lightweight requirements.

[0011] In some embodiments, the web is provided with a connecting post, the connecting post having a first connecting hole, and the flywheel is connected to the generator through a first fastener passing through the first connecting hole.

[0012] By providing a connecting post with a first connecting hole on the web, the flywheel assembly can be connected to the generator through a first fastener passing through the first connecting hole.

[0013] In some embodiments, a plurality of connecting posts are provided, and the plurality of connecting posts are evenly spaced along the circumference of the web, and the distance from each connecting post to the center of the web is equal along the radial direction of the web.

[0014] By incorporating multiple connecting posts, the number of connection points between the flywheel assembly and the generator can be increased, resulting in a more secure connection. The connecting posts are evenly spaced along the web, ensuring more even stress distribution after the flywheel assembly is connected to the generator.

[0015] In some embodiments, the web is provided with a stop member connected to the side of the connecting post near the center of the web, the stop member protruding from the connecting post, and the stop member being used to abut against the generator.

[0016] By installing a stop on the web and connecting the stop to the side of the connecting column near the center of the web, the stop can serve as a guide and limiter when the flywheel assembly is connected to the generator.

[0017] In some embodiments, multiple stops are provided, and each stop corresponds to a connecting post.

[0018] By setting multiple stops, the guiding and limiting effects are enhanced.

[0019] In some embodiments, along the axial direction of the web, a portion of the orthographic projection of the connecting column overlaps with a portion of the orthographic projection of the first stiffener.

[0020] By setting the portion of the connecting column projected along the axial direction of the web to overlap with the portion of the first reinforcing rib projected along the axial direction of the web, the flywheel assembly can be facilitated in terms of processing and manufacturing, and the overall strength and stability of the flywheel assembly can be improved.

[0021] In some embodiments, the web is provided with a second reinforcing rib. Along the axial direction of the web, the second reinforcing rib and the first reinforcing rib are respectively located on both sides of the web. Multiple second reinforcing ribs are provided, and each second reinforcing rib corresponds to one of the first reinforcing ribs.

[0022] By adding a second reinforcing rib, the overall strength and stability of the flywheel assembly are further increased.

[0023] This utility model also provides a range extender, comprising: generator; and The aforementioned flywheel assembly is connected to the generator.

[0024] Because the range extender includes the aforementioned flywheel assembly, it also has the advantages of high strength and light weight. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of a range extender provided in one embodiment of the present invention; Figure 2 This is a schematic diagram of the flywheel assembly provided in one embodiment of the present invention. Figure 1 ; Figure 3 This is a schematic diagram of the flywheel assembly provided in one embodiment of the present invention. Figure 2 ; Figure 4 This is a schematic diagram of the flywheel assembly provided in one embodiment of the present invention. Figure 3 ; Figure 5 This is a schematic diagram of the flywheel assembly provided in one embodiment of the present invention. Figure 4 .

[0027] Figure label: 1. Flywheel assembly; 11. Flywheel; 111. Web plate; 1111. Weight reduction hole; 112. Outer ring; 113. Connecting flange; 1131. Second connecting hole; 114. First reinforcing rib; 1141. First end; 1142. Second end; 115. Connecting post; 1151. First connecting hole; 116. Stop; 117. Second reinforcing rib; 12. Gear ring; 2. Generator; 21. Housing; 22. Rotor support; 3. First fastener. Detailed Implementation

[0028] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are for illustrative purposes only and do not limit the scope of the application. Similarly, the following embodiments are only some, not all, embodiments of the present application, and all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present application.

[0029] The terms "first," "second," and "third" used in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movement of components in a specific posture (as shown in the figures). If the specific posture changes, the directional indication will also change accordingly. The terms "comprising" and "having," and any variations thereof, in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to these processes, methods, products, or devices.

[0030] A flywheel assembly includes a flywheel, a gear ring, and a first reinforcing rib. The flywheel includes a web and an outer ring. The web is provided with a connecting flange for connection to a crankshaft. The outer ring is fitted onto and connected to the web.

[0031] A toothed ring is fitted onto and connected to the outer ring. A first reinforcing rib is connected to the web and extends radially along the web. Multiple first reinforcing ribs are provided, evenly spaced along the circumference of the web. The web has weight-reducing holes located between adjacent reinforcing ribs.

[0032] The flywheel assembly provided by this utility model includes a flywheel, a gear ring, and a first reinforcing rib. The first reinforcing rib is connected to the web, which allows the web to meet the strength requirements of the flywheel assembly while maintaining a relatively small thickness. In addition, the web has weight-reducing holes, which can further reduce the weight of the web, enabling the flywheel assembly to meet the lightweight requirements.

[0033] like Figure 1 As shown, in some embodiments, the range extender includes a generator 2 and a flywheel assembly 1. The flywheel assembly 1 is connected to the generator 2.

[0034] Specifically, the generator 2 includes a housing 21 and a rotor support 22. The housing 21 has a receiving cavity. The rotor support 22 is located in the receiving cavity. The rotor support 22 is rotatably connected to the housing 21. The flywheel assembly 1 is connected to the rotor support 22.

[0035] In some embodiments, the flywheel assembly 1 is connected to the rotor bracket 22 via a first fastener 3, facilitating the assembly and disassembly of the flywheel assembly 1. When the flywheel assembly 1 is damaged, it can be removed from the rotor bracket 22 for replacement or repair. Of course, in other embodiments, the flywheel assembly 1 can also be connected to the rotor bracket 22 by welding.

[0036] Optionally, the first fastener 3 is a bolt.

[0037] like Figure 2 and Figure 3 As shown, in some embodiments, the flywheel assembly 1 includes a flywheel 11 and a gear ring 12. The gear ring 12 is fitted onto the flywheel 11 and connected to the flywheel 11.

[0038] Specifically, the flywheel 11 includes a web 111 and an outer ring 112. The outer ring 112 is fitted onto and connected to the web 111. The gear ring 12 is fitted onto and connected to the outer ring 112.

[0039] In some embodiments, the outer ring 112 is connected to the gear ring 12 by an interference fit, resulting in a robust and reliable connection capable of withstanding large torque and impact loads. Of course, in other embodiments, the outer ring 112 can also be connected to the gear ring 12 by welding.

[0040] In some embodiments, the web 111 is a circular plate structure. The outer ring 112 is an annular plate structure.

[0041] In some embodiments, the thickness of the outer ring 112 is greater than the thickness of the web 111, that is, the length of the outer ring 112 along its axial direction is greater than the length of the web 111 along its axial direction.

[0042] In some embodiments, the outer ring 112 and the web 111 are integrally formed, which is simple in process and eliminates the risk of loosening. Of course, in other embodiments, the outer ring 112 and the web 111 can also be connected by an interference fit.

[0043] In some embodiments, the web 111 is provided with a connecting flange 113. The flywheel assembly 1 is connected to the crankshaft via the connecting flange 113.

[0044] In some embodiments, the web plate 111 and the connecting flange 113 are integrally formed, which is simple in process and eliminates the risk of loosening. Of course, in other embodiments, the connecting flange 113 can also be connected to the web plate 111 by welding.

[0045] In some embodiments, the flywheel 11 further includes a first reinforcing rib 114. The first reinforcing rib 114 is connected to the web 111. The reinforcing rib extends radially along the web 111. Multiple first reinforcing ribs 114 are provided, and the multiple first reinforcing ribs 114 are evenly spaced along the circumference of the web 111. The reinforcing ribs are radially distributed on the web 111. By providing the first reinforcing ribs 114, the web 111 can meet the strength requirements of the flywheel assembly 1 with a relatively small thickness.

[0046] In some embodiments, the thickness of the web 111 is 4mm-6mm. For example, the thickness of the web 111 is 4mm, 5mm, 6mm, or any range of two of the above values.

[0047] In some embodiments, twelve first reinforcing ribs 114 are provided. The twelve first reinforcing ribs 114 are evenly spaced along the circumference of the web 111. Of course, in other embodiments, six, eight, or ten first reinforcing ribs 114 may also be provided.

[0048] In some embodiments, the first reinforcing rib 114 is integrally formed with the web 111, which is simple to manufacture and eliminates the risk of loosening. Of course, in other embodiments, the first reinforcing rib 114 can also be connected to the web 111 by welding.

[0049] In some embodiments, the first reinforcing rib 114 has a first end 1141 and a second end 1142 opposite to the first end 1141. The first end 1141 is connected to the connecting flange 113. The second end 1142 is connected to the outer ring 112. By connecting the first end 1141 to the connecting flange 113 and the second end 1142 to the outer ring 112, the length of the first reinforcing rib 114 can be increased as much as possible; on the other hand, the connection position between the first reinforcing rib 114 and the flywheel 11 can be increased, further increasing the overall strength of the flywheel assembly 1.

[0050] In some embodiments, the web 111 has weight-reduction holes 1111. The weight-reduction holes 1111 are located between two adjacent first reinforcing ribs 114. By providing weight-reduction holes 1111, the weight of the web 111 can be further reduced, so that the flywheel assembly 1 meets the lightweight requirements.

[0051] In some embodiments, the width of the weight-reducing hole 1111 gradually decreases along the direction from the connecting flange 113 to the outer ring 112. By setting the width of the weight-reducing hole 1111 to gradually increase along the direction from the connecting flange 113 to the outer ring 112, the area of ​​the weight-reducing hole 1111 can be increased as much as possible, achieving a better weight-reduction effect and enabling the flywheel assembly 1 to meet the lightweight requirements. Of course, in other embodiments, the weight-reducing hole 1111 can also be a circular hole or an elliptical hole.

[0052] Specifically, the web 111 has a first inner wall, a second inner wall, a third inner wall, and a fourth inner wall. The first inner wall, the second inner wall, the third inner wall, and the fourth inner wall are connected in sequence. The first inner wall, the second inner wall, the third inner wall, and the fourth inner wall define a weight-reducing hole 1111.

[0053] In some embodiments, the first inner wall extends radially along the web 111. The third inner wall extends radially along the web 111.

[0054] Specifically, one end of the first inner wall along the radial direction of the web 111 is connected to the second inner wall. The other end of the first inner wall along the radial direction of the web 111 is connected to the fourth inner wall. One end of the third inner wall along the radial direction of the web 111 is connected to the second inner wall. The other end of the third inner wall along the radial direction of the web 111 is connected to the fourth inner wall.

[0055] In some embodiments, the second inner wall is arc-shaped. The fourth inner wall is arc-shaped.

[0056] In some embodiments, a weight-reducing hole 1111 is provided between two partially adjacent first reinforcing ribs 114. The weight-reducing holes 1111 are evenly spaced along the circumference of the web 111. For example, there are twelve first reinforcing ribs 114 and six weight-reducing holes 1111.

[0057] In some embodiments, the web 111 is provided with a connecting post 115. The connecting post 115 has a first connecting hole 1151. By providing the connecting post 115 with the first connecting hole 1151 on the web 111, the flywheel assembly 1 can be connected to the generator 2 by a first fastener 3 passing through the first connecting hole 1151.

[0058] like Figure 1 , Figure 2 and Figure 3 As shown, specifically, the rotor support 22 is provided with a threaded hole. The first fastener 3 passes through the first connecting hole 1151 and is threadedly connected to the rotor support 22 through the threaded hole.

[0059] In some embodiments, the connecting post 115 is a cylinder. Of course, in other embodiments, the connecting post 115 may also be a prism.

[0060] In some embodiments, the first connecting hole 1151 is a circular hole. Of course, in other embodiments, the first connecting hole 1151 may also be an elliptical hole.

[0061] In some embodiments, multiple connecting posts 115 are provided, and the multiple connecting posts 115 are evenly spaced along the circumference of the web 111. Along the radial direction of the web 111, each connecting post 115 is equidistant from the center of the web 111. By providing multiple connecting posts 115, the connection points between the flywheel assembly 1 and the generator 2 can be increased, making the connection between the flywheel assembly 1 and the generator 2 more secure. The evenly spaced connecting posts 115 along the web 111 ensure that the force is more evenly distributed after the flywheel assembly 1 and the generator 2 are connected.

[0062] In some embodiments, the orthographic projection of the connecting post 115 along the axial direction of the web 111 overlaps with the orthographic projection of the first reinforcing rib 114. By setting the orthographic projection of the connecting post 115 along the axial direction of the web 111 to overlap with the orthographic projection of the first reinforcing rib 114 along the axial direction of the web 111, the manufacturing of the flywheel assembly 1 is facilitated, and the overall strength and stability of the flywheel assembly 1 are improved.

[0063] In some embodiments, the connecting column 115 extends through the web 111 along the axial direction of the web 111.

[0064] In some embodiments, along the axial direction of the web 111, the length of the connecting column 115 is greater than the length of the first reinforcing rib 114.

[0065] In some embodiments, the web 111 is provided with a stop 116. The stop 116 is connected to the side of the connecting post 115 near the center of the web 111. The stop 116 protrudes from the connecting post 115. By providing the stop 116 on the web 111 and connecting the stop 116 to the side of the connecting post 115 near the center of the web 111, the stop 116 can serve as a guide and limiter when the flywheel assembly 1 is connected to the generator 2.

[0066] like Figure 1 , Figure 2 and Figure 3 As shown, specifically, the stop 116 abuts against the rotor support 22.

[0067] In some embodiments, the stop 116 has an abutment surface. The abutment surface is planar. The abutment surface abuts against the rotor support 22.

[0068] In some embodiments, the stop 116 has a cuboid structure. The stop 116 is located on the side of the web 111 where the first reinforcing rib 114 is connected.

[0069] In some embodiments, the stop 116 and the connecting post 115 are integrally formed, which is simple in process and eliminates the risk of loosening. Of course, in other embodiments, the stop 116 can also be connected to the connecting post 115 by welding.

[0070] like Figure 4 and Figure 5 As shown, the web 111 is provided with a second reinforcing rib 117. Along the axial direction of the web 111, the second reinforcing rib 117 and the first reinforcing rib 114 are located on both sides of the web 111, and multiple second reinforcing ribs 117 are provided, with each second reinforcing rib 117 corresponding to one of the first reinforcing ribs 114. By providing the second reinforcing ribs 117, the overall strength and stability of the flywheel assembly 1 are further increased.

[0071] Specifically, one end of the second reinforcing rib 117 is connected to the outer ring 112.

[0072] In some embodiments, the second reinforcing rib 117 is integrally formed with the web 111, which is simple to manufacture and eliminates the risk of loosening. Of course, in other embodiments, the second reinforcing rib 117 can also be connected to the web 111 by welding.

[0073] In some embodiments, the connecting flange 113 is provided with a second connecting hole 1131. A second fastener passes through the second connecting hole 1131 and is connected to the crankshaft.

[0074] Optionally, the second fastener is a bolt and a nut.

[0075] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0076] Furthermore, 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0077] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0078] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0079] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0080] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A flywheel assembly (1) characterized by, include: Flywheel (11), said flywheel (11) comprising: A web (111), wherein the web (111) is provided with a connecting flange (113) for connection to a crankshaft; and Outer ring (112), the outer ring (112) is fitted onto the web plate (111) and connected to the web plate (111); A gear ring (12), said gear ring (12) being fitted onto and connected to the outer ring (112); and First reinforcing rib (114), the first reinforcing rib (114) is connected to the web (111), the first reinforcing rib (114) extends radially along the web (111), and multiple first reinforcing ribs (114) are provided, and the multiple first reinforcing ribs (114) are evenly spaced along the circumference of the web (111). The web (111) has a weight-reducing hole (1111), which is located between two adjacent first reinforcing ribs (114).

2. The flywheel assembly (1) according to claim 1, characterized in that The first reinforcing rib (114) has a first end (1141) and a second end (1142) opposite to the first end (1141). The first end (1141) is connected to the connecting flange (113), and the second end (1142) is connected to the outer ring (112).

3. The flywheel assembly (1) according to claim 1, characterized in that Along the direction from the connecting flange (113) toward the outer ring (112), the width of the weight-reducing hole (1111) gradually increases.

4. The flywheel assembly (1) according to claim 1, characterized in that, The web plate (111) is provided with a connecting post (115), the connecting post (115) has a first connecting hole (1151), and the flywheel (11) is connected to the generator (2) through a first fastener (3) passing through the first connecting hole (1151).

5. The flywheel assembly (1) according to claim 4, characterized in that Multiple connecting posts (115) are provided, and the multiple connecting posts (115) are evenly spaced along the circumference of the web (111). Along the radial direction of the web (111), the distance from each connecting post (115) to the center of the web (111) is equal.

6. The flywheel assembly (1) according to claim 5, characterized in that The web (111) is provided with a stop (116), which is connected to the side of the connecting post (115) near the center of the web (111). The stop (116) protrudes from the connecting post (115) and is used to abut against the generator (2).

7. The flywheel assembly (1) according to claim 6, characterized in that Multiple stop members (116) are provided, and each stop member (116) corresponds to a connecting post (115).

8. The flywheel assembly (1) according to claim 4, characterized in that Along the axial direction of the web (111), the orthographic projection of the connecting column (115) overlaps with the orthographic projection of the first reinforcing rib (114).

9. The flywheel assembly (1) according to claim 1, characterized in that The web (111) is provided with a second reinforcing rib (117). Along the axial direction of the web (111), the second reinforcing rib (117) and the first reinforcing rib (114) are located on both sides of the web (111). There are multiple second reinforcing ribs (117), and each second reinforcing rib (117) corresponds to one of the first reinforcing ribs (114).

10. A range extender, characterized by, include: Generator (2); as well as The flywheel assembly (1) as claimed in any of claims 1-9, connected to the generator (2).

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