Outer insert, gear hub, nesting structure and vehicle

Abstract

The utility model discloses an outer insert, a gear hub, a nested structure and a vehicle. An outer embedding structure suitable for being embedded with an embedded piece is arranged on the outer circumferential wall of the outer insert and comprises at least one row of concave structures, each row of concave structures comprises a plurality of groove parts, the groove parts are arranged in the circumferential direction of the outer insert at intervals, at least one axial end of each row of concave structures forms an outer insert isolation part, and the outer insert isolation part is arranged in the groove parts. The outer insert isolation part extends in the circumferential direction of the outer insert, the groove part is connected to the outer insert isolation part, and the groove part is configured to be concave inwards in the radial direction of the outer insert relative to the outer insert isolation part. According to the outer insert and the embedded part, when liquid materials of the outer insert and the embedded part are poured into the outer embedding structure, the liquid materials can be fused with the outer insert isolation part firstly, then flow to the axial outer side of the outer insert isolation part and are injected into the groove part, and therefore the connection firmness degree of the embedded part and the outer insert can be increased.

Description

Technical Field

[0001] The present application relates to the technical field of nested structures, and more particularly, to an outer insert, a gear hub, a nested structure, and a vehicle. Background Art

[0002] In the related art, a gear hub includes an outer insert, and an insert (such as a gear) is formed on the outer insert through a casting or injection molding process. The connection strength between the insert and the outer insert is relatively low, resulting in the insert and the outer insert being easily separated from each other. Therefore, there is room for improvement. Summary of the Utility Model

[0003] The present application aims to at least partly solve one of the above technical problems in the prior art. To this end, the present application provides an insert, which is beneficial to improving the connection strength between the insert and the outer insert.

[0004] The present application also provides a gear hub having the above insert.

[0005] The present application also provides a nested structure having the above gear hub.

[0006] The present application also provides a vehicle having the above nested structure.

[0007] On the outer peripheral wall of the outer insert according to an embodiment of the present application, there is provided an outer fitting structure adapted to fit with an insert. The outer fitting structure includes at least one row of recessed structures. Each row of the recessed structures includes a plurality of groove portions. The plurality of groove portions are arranged at intervals along the circumferential direction of the outer insert. At least one axial end of each row of the recessed structures forms an outer insert isolation portion. The outer insert isolation portion extends along the circumferential direction of the outer insert. The groove portion is connected to the outer insert isolation portion. The groove portion is configured to be recessed radially inward with respect to the outer insert isolation portion.

[0008] For the outer insert according to an embodiment of the present application, by providing the outer insert isolation portion, when the liquid material of the insert is poured into the outer fitting structure, the liquid material can first fuse with the outer insert isolation portion, and then flow to the axially outer side of the outer insert isolation portion and be injected into the groove portion. Thus, the connection strength between the insert and the outer insert can be increased.

[0009] According to some embodiments of the present application, each row of the recessed structures further includes a plurality of protrusion portions. The protrusion portions protrude outward with respect to the groove portions. The groove portions and the protrusion portions are alternately arranged along the circumferential direction of the outer insert.

[0010] According to some embodiments of the present application, the minimum vertical distance from the outer insert isolation portion to the axis of the outer insert is not less than the maximum vertical distance from the protrusion portion to the axis of the outer insert.

[0011] According to some embodiments of the present application, the raised portion and the outer insert isolation portion are located on the same toroidal surface.

[0012] According to some embodiments of the present application, in the circumferential direction of the outer insert, the circumferential width of the groove portion is greater than the circumferential width of the raised portion.

[0013] According to some embodiments of the present application, the recessed structures are arranged in multiple rows, and the multiple rows of recessed structures are spaced apart in the axial direction of the outer insert, and the outer insert isolation portion is provided between adjacent two rows of recessed structures.

[0014] According to some embodiments of the present application, the groove portions at the two axial ends of the multiple rows of recessed structures extend to the axial end surfaces of the outer insert.

[0015] According to some embodiments of the present application, at least a part of the groove wall surface of the groove portion is configured as an arc surface.

[0016] According to some embodiments of the present application, the outer insert isolation portion is configured as an integral ring-shaped structure; the outer insert isolation portion is a straight cylindrical ring-shaped structure, or, in the axial direction of the outer insert, the outer insert isolation portion is configured as a structure that bulges in the middle and converges on both sides.

[0017] According to another embodiment of the present application, a gear hub includes an inner insert and the above-mentioned outer insert. An inner engagement structure is provided on the outer peripheral wall of the inner insert, the outer insert is fixed to the outer peripheral wall of the inner insert, and the inner peripheral wall of the outer insert is engaged with the inner engagement structure.

[0018] According to the gear hub of the embodiment of the present application, by providing the inner engagement structure on the outer peripheral wall of the inner insert, the connection between the outer insert and the inner insert is made tighter and more secure. By providing the outer engagement structure on the outer peripheral wall of the outer insert, the connection between the inserted part and the outer insert is made tighter and more secure.

[0019] According to some embodiments of the present application, the outer insert is a molded part cast or injection molded on the inner insert.

[0020] According to some embodiments of the present application, the inner engagement structure includes a plurality of connecting teeth, the plurality of connecting teeth are arranged along the circumferential direction of the inner insert, and the plurality of connecting teeth are configured in one row or multiple rows along the axial direction of the inner insert.

[0021] According to some embodiments of the present application, the plurality of connecting teeth are configured in multiple rows along the axial direction of the inner insert, and the multiple rows of connecting teeth are spaced apart in the axial direction of the inner insert.

[0022] According to some embodiments of the present application, the plurality of connecting teeth are multi-prism-shaped teeth; or the plurality of connecting teeth are strip-shaped teeth, and the length extension of the strip-shaped teeth is parallel or intersects with the axis of the insert.

[0023] According to some embodiments of the present application, the material hardness of the insert is greater than the material hardness of the outer insert.

[0024] According to some embodiments of the present application, the insert is a metal part or a plastic part, and the outer insert is a metal part or a plastic part.

[0025] According to some embodiments of the present application, the insert is a shaft or a bushing.

[0026] According to an embodiment of another aspect of the present application, a nested structure includes an inserted part and the above-mentioned gear hub, and the inner peripheral wall of the inserted part is engaged with the outer engagement structure.

[0027] According to the nested structure of the embodiments of the present application, by providing an inner engagement structure on the outer peripheral wall of the insert, the connection between the outer insert and the insert is made tighter and more secure. By providing an outer engagement structure on the outer peripheral wall of the outer insert, the connection between the inserted part and the outer insert is made tighter and more secure.

[0028] According to some embodiments of the present application, the inserted part is a formed part cast or injection molded on the outer insert.

[0029] According to some embodiments of the present application, the inserted part is a gear.

[0030] According to an embodiment of another aspect of the present application, a vehicle includes the above-mentioned nested structure.

[0031] According to the vehicle of the embodiments of the present application, in its nested structure, by providing an inner engagement structure on the outer peripheral wall of the insert, the connection between the outer insert and the insert is made tighter and more secure. By providing an outer engagement structure on the outer peripheral wall of the outer insert, the connection between the inserted part and the outer insert is made tighter and more secure.

[0032] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. Description of the Drawings

[0033] Figure 1 is a three-dimensional schematic diagram of a gear hub according to an embodiment of the present application;

[0034] Figure 2 is Figure 1 another three-dimensional schematic diagram of the gear hub of the illustrated embodiment;

[0035] Figure 3 is Figure 1Schematic diagram of an insert of an embodiment of the shown gear hub;

[0036] Figure 4 is Figure 1 Schematic diagram of an insert of another embodiment of the shown gear hub;

[0037] Figure 5 is Figure 1 Schematic diagram of an insert of another embodiment of the shown gear hub;

[0038] Figure 6 is Figure 1 Schematic diagram of an insert of another embodiment of the shown gear hub;

[0039] Figure 7 is Figure 1 Schematic diagram of an insert of another embodiment of the shown gear hub;

[0040] Figure 8 is Figure 1 Schematic diagram of an insert of another embodiment of the shown gear hub;

[0041] Figure 9 is Figure 1 Three-dimensional schematic diagram of the nested structure of the shown gear hub and the inserted part nested;

[0042] Figure 10 is Figure 1 Another three-dimensional schematic diagram of the nested structure of the shown gear hub and the inserted part nested;

[0043] Figure 11 Three-dimensional schematic diagram of a gear hub according to another embodiment of the present application;

[0044] Figure 12 is Figure 11 Schematic diagram of an insert of an embodiment of the shown gear hub;

[0045] Figure 13 is Figure 11 Schematic diagram of an insert of another embodiment of the shown gear hub;

[0046] Figure 14 is Figure 11 Schematic diagram of an insert of another embodiment of the shown gear hub;

[0047] Figure 15 is Figure 11 Schematic diagram of an insert of another embodiment of the shown gear hub;

[0048] Figure 16 is Figure 11 Schematic diagram of an insert of another embodiment of the shown gear hub;

[0049] Figure 17 is Figure 11 A three-dimensional schematic diagram of the nested structure in which the gear hub shown is nested with the insert

[0050] Figure 18 A three-dimensional schematic diagram of a gear hub according to an embodiment of the present application

[0051] Figure 19 is Figure 18 The front view of the gear hub shown

[0052] Figure 20 A schematic diagram of a gear hub according to another embodiment of the present application

[0053] Figure 21 is Figure 20 The front view of the gear hub shown

[0054] Figure 22 A schematic diagram of a vehicle according to an embodiment of the present application

[0055] Reference numerals:

[0056] Vehicle 1000, nested structure 100, gear hub 10, insert 1, inner engagement structure 11, insert isolation part 12, outer insert 2, outer engagement structure 21, groove part 211, protrusion part 212, outer insert isolation part 22, insert 20. Detailed description of the specific implementation

[0057] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present application and should not be construed as limiting the present application.

[0058] In the description of the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0059] The following will be combined with Figures 1 - 22 Describe in detail the outer insert 2 according to the embodiment of the present application, the gear hub 10 having the outer insert 2, the nested structure 100 having the gear hub 10, and the vehicle 1000 having the nested structure 100.

[0060] Refer toFigures 1 - 2 , Figure 11 , Figures 18 - 21 As shown in Figures 18 - 21 , on the outer peripheral wall of the outer insert 2 according to an embodiment of the present application, there is provided an outer fitting structure 21 adapted to be fitted with the inner insert 20, and the outer fitting structure 21 includes at least one row of recessed structures.

[0061] Each row of recessed structures includes a plurality of groove portions 211, the plurality of groove portions 211 are arranged at intervals in the circumferential direction of the outer insert 2, at least one axial end of each row of recessed structures forms an outer insert isolation portion 22, the outer insert isolation portion 22 extends in the circumferential direction of the outer insert 2, the groove portions 211 are connected to the outer insert isolation portion 22, and the groove portions 211 are configured to be recessed inward in the radial direction of the outer insert 2 relative to the outer insert isolation portion 22. Thus, the excess liquid material at the outer insert isolation portion 22 can easily flow into the groove portions 211, which is convenient for improving the connection strength between the inner insert 20 and the outer insert 2.

[0062] When pouring the liquid material of the inner insert 20 onto the outer fitting structure 21, the liquid material first fuses with the outer insert isolation portion 22, and the excess liquid material will flow axially along the outer insert 2 to the axially outer side of the outer insert isolation portion 22 and fill into the groove portions 211 on the axially outer side of the outer insert isolation portion 22. Thus, more material of the outer insert 2 can enter the groove portions 211, thereby increasing the connection strength between the inner insert 20 and the outer insert 2.

[0063] In some embodiments, the outer fitting structure 21 includes one row of recessed structures. As Figures 18 - 19 shown, the outer fitting structure 21 includes one row of recessed structures, and the axially left side of this recessed structure has an outer insert isolation portion 22. When pouring the liquid material of the inner insert 20 onto the outer fitting structure 21, the liquid material first fuses with the outer insert isolation portion 22, and the excess liquid material will flow axially along the outer insert 2 to the axially right side of the outer insert isolation portion 22 and fill into the groove portions 211 on the axially right side of the outer insert isolation portion 22.

[0064] In some embodiments, the outer fitting structure 21 includes multiple rows of recessed structures, that is, the recessed structures are multiple rows, and the multiple rows of recessed structures are arranged at intervals in the axial direction of the outer insert 2. There is an outer insert isolation portion 22 between adjacent two rows of recessed structures. In other words, adjacent two rows of recessed structures are separated by the outer insert isolation portion 22. The recessed structures can be two rows, three rows or more rows. For example, in the Figures 1 - 2 , Figure 11 shown example, the outer fitting structure 21 includes two rows of recessed structures, namely the first row of recessed structures 21a and the second row of recessed structures 21b; in Figures 20 - 21In the illustrated example, the outer fitting structure 21 includes three rows of recessed structures, namely, a first row of recessed structures 21a, a second row of recessed structures 21b, and a third row of recessed structures 21c. In the axial direction of the outer insert 2, the third row of recessed structures 21c is located at the middle position between the first row of recessed structures 21a and the second row of recessed structures 21b.

[0065] In the related art, an insert (such as a gear) is formed on the outer insert through a casting or injection molding process, and the connection strength between the insert and the outer insert is relatively low, resulting in the insert and the outer insert being easily separated from each other. According to the outer insert 2 of the embodiment of the present application, by providing the outer insert isolation portion 22, when the liquid material of the insert 20 is poured onto the outer fitting structure 21, the liquid material can first fuse with the outer insert isolation portion 22 and then flow to the axial outside of the outer insert isolation portion 22 and be injected into the groove portion 211. Thereby, the connection firmness between the insert 20 and the outer insert 2 can be increased.

[0066] In some embodiments of the present application, each row of recessed structures further includes a plurality of protruding portions 212. The protruding portions 212 protrude outward relative to the groove portion 211, and the groove portion 211 and the protruding portions 212 are alternately arranged along the circumferential direction of the outer insert 2. In this way, when the liquid material of the insert 20 is poured onto the outer fitting structure 21, the liquid material can first fuse with the protruding portions 212 and the outer insert isolation portion 22 and then enter the groove portion 211. The arrangement of the protruding portions 212 can enable the liquid material at the outer insert isolation portion 22 to flow axially along the protruding portions 212, so that the material entering the groove portion 211 flows evenly axially, which is beneficial to improving the connection firmness between the insert 20 and the outer insert 2 in the axial direction.

[0067] In some embodiments of the present application, the minimum vertical distance from the outer insert isolation portion 22 to the axis of the outer insert 2 is not less than the maximum vertical distance from the protruding portion 212 to the axis of the outer insert 2. In other words, the outer side surface of the protruding portion 212 does not protrude beyond the outer side surface of the outer insert isolation portion 22.

[0068] For example, when the minimum vertical distance from the outer insert isolation portion 22 to the axis of the outer insert 2 is equal to the maximum vertical distance from the protruding portion 212 to the axis of the outer insert 2, the outer side surface of the protruding portion 212 and the outer side surface of the outer insert isolation portion 22 are located on the same toroidal surface, or in other words, the outer side surface of the protruding portion 212 and the outer side surface of the outer insert isolation portion 22 are located on the same cylindrical surface. When the liquid material of the insert 20 is poured onto the outer fitting structure 21, the liquid material first fuses with the protruding portions 212 and the outer insert isolation portion 22, and the excess liquid material will flow circumferentially along the outer insert 2 to both circumferential sides of the protruding portion 212 and axially along the outer insert 2 to the axial outside of the outer insert isolation portion 22 and fill in the groove portion 211 on both circumferential sides of the protruding portion 212 and the axial outside of the outer insert isolation portion 22.

[0069] When the minimum vertical distance from the outer insert isolation part 22 to the axis of the outer insert 2 is greater than the maximum vertical distance from the convex part 212 to the axis of the outer insert 2, the outer side surface of the outer insert isolation part 22 protrudes outward from the outer side surface of the convex part 212. When the liquid material of the insert 20 is poured onto the outer fitting structure 21, the liquid material first fuses with the outer insert isolation part 22, and the excess liquid material will flow along the circumferential direction of the outer insert 2 to both circumferential sides of the convex part 212 and flow along the axial direction of the outer insert 2 to the axial outside of the outer insert isolation part 22, filling the groove part 211 on both circumferential sides of the convex part 212 and the axial outside of the outer insert isolation part 22.

[0070] It should be noted that "the groove part 211 and the convex part 212 are alternately arranged along the circumferential direction of the outer insert 2" may mean that the groove group composed of M groove parts 211 and the convex group composed of N convex parts 212 are alternately arranged along the circumferential direction of the outer insert 2. Both M and N are positive integers. For example, M can be 1, 2, 3, etc., and N can be 1, 2, 3, etc.

[0071] In the circumferential direction of the outer insert 2, the number of groove parts 211 included in two adjacent groove groups may be equal or unequal. Similarly, in the circumferential direction of the outer insert 2, the number of convex parts 212 included in two adjacent convex groups may be equal or unequal. For example, it can be one groove part 211 and one convex part 212 alternately in sequence, or two groove parts 211 and one convex part 212 alternately in sequence, or one groove part 211, one convex part 212, two groove parts 211, and three convex parts 212 alternately in sequence.

[0072] Refer to Figures 1 - 2 、 Figure 11 As shown, the outer insert isolation part 22 is arranged in a ring shape along the circumferential direction of the outer insert 2. The arrangement of the outer insert isolation part 22 facilitates mold splitting and can also prevent the relative axial movement between the insert 20 and the outer insert 2, preventing the insert 20 and the outer insert 2 from axially separating from each other.

[0073] In some embodiments of the present application, the convex part 212 and the outer insert isolation part 22 are located on the same toroidal surface. At this time, the minimum vertical distance from the outer insert isolation part 22 to the axis of the outer insert 2 is equal to the maximum vertical distance from the convex part 212 to the axis of the outer insert 2. In this way, the convex part 212 and the outer insert isolation part 22 can be integrally processed and formed, which is beneficial to simplifying the manufacturing steps of the outer insert 2.

[0074] In some embodiments of the present application, in the circumferential direction of the outer insert 2, the circumferential width of the groove part 211 is greater than the circumferential width of the convex part 212. This can make more liquid material flow into the groove part 211, thereby being beneficial to improving the connection strength between the insert 20 and the outer insert 2.

[0075] In some embodiments of the present application, the groove portions 211 at the axial two ends in the multi-row recessed structure extend to the axial end faces of the outer insert 2. In this way, the processing of the groove portions 211 is relatively convenient, and the liquid material can flow to the end of the outer insert 2 along the groove portions 211 at the end, which is beneficial to improving the connection strength between the insert 20 and the outer insert 2.

[0076] In Figures 1 - 2 , Figure 11 In the example shown in

[0077] In Figures 18 - 19 the example shown in

[0078] In Figures 20 - 21 the example shown in

[0079] In some embodiments of the present application, at least part of the groove wall surface of the groove portion 211 is configured as an arc surface. In this way, when the liquid material flows into the groove portion 211, it can better fit the groove wall of the groove portion 211, thereby improving the connection strength between the insert 20 and the outer insert 2.

[0080] In some embodiments of the present application, the outer insert isolation portion 22 is configured as a whole-ring annular structure. In this way, in the circumferential direction of the outer insert 2, the liquid material at the outer insert isolation portion 22 can reach the groove portion 211 at any position.

[0081] Optionally, the outer insert isolation portion 22 is a straight cylindrical annular structure.

[0082] Alternatively, optionally, in the axial direction of the outer insert 2, the outer insert isolation portion 22 is configured as a structure that protrudes outward in the middle and converges inward on both sides. In this way, when the liquid material of the insert 20 is poured onto the outer insert isolation portion 22, the liquid material will flow along the outer surface of the outer insert isolation portion 22 from the outwardly protruding portion in the middle to the inwardly converging portions on both sides, and thus flow into the groove portion 211 outside the axial direction of the outer insert isolation portion 22.

[0083] Referring to Figures 1 - 2 、 Figure 11 As shown in, the gear hub 10 according to another embodiment of the present application may include an inner insert 1 and the outer insert 2 of the above embodiment. An inner fitting structure 11 is provided on the outer peripheral wall of the inner insert 1. The outer insert 2 is fixed to the outer peripheral wall of the inner insert 1, and the inner peripheral wall of the outer insert 2 is fitted with the inner fitting structure 11.

[0084] In the related art, the connection strengths between the outer insert and the inner insert, and between the insert and the outer insert are both relatively low, resulting in the outer insert and the inner insert, and the insert and the outer insert being easily separated from each other. For the gear hub 10 according to the embodiment of the present application, by providing the inner fitting structure 11 on the outer peripheral wall of the inner insert 1, the connection between the outer insert 2 and the inner insert 1 is made more tight and firm. By providing an outer fitting structure 21 on the outer peripheral wall of the outer insert 2, the connection between the insert 20 and the outer insert 2 is made more tight and firm.

[0085] In some embodiments of the present application, referring to Figures 1 - 2 、 Figure 11 As shown in, the outer insert 2 is a formed part cast or injection-molded on the inner insert 1. Specifically, when the outer insert 2 is a metal part, the outer insert 2 can be formed on the inner insert 1 by a casting process; when the outer insert 2 is a plastic part, the outer insert 2 can be formed on the inner insert 1 by an injection molding process. Compared with the gear hubs in the related art, the gear hub 10 of the present application uses less material, is light in weight and high in strength. The outer insert 2 is directly formed on the inner insert 1, which can save the processing cost and assembly cost of the outer insert 2 and the inner insert 1. Utilizing the principle of thermal expansion and contraction of materials, the outer insert 2 is directly formed on the inner insert 1. Compared with the interference fit method of the outer insert and the inner insert in the related art, the connection cost between the outer insert 2 and the inner insert 1 of the gear hub 10 of the present application is low, and the connection is firm and reliable. In addition, the material utilization rate of the casting or injection molding process is high, and the material waste is less. For example, there is almost no material waste in casting, especially high-pressure casting.

[0086] In some embodiments of the present application, the internal fitting structure 11 includes a plurality of connecting teeth. The structure of the connecting teeth increases the contact area between the materials of the insert 1 and the outer insert 2, making the connection between the outer insert 2 and the insert 1 tighter and more secure. The plurality of connecting teeth are arranged circumferentially along the insert 1, and the plurality of connecting teeth are configured in one row or multiple rows axially along the insert 1. For example, in the examples shown in Figure 3 , Figure 5 , Figure 7 , Figures 12 - 13 , Figure 15 , the plurality of connecting teeth are configured in one row axially along the insert 1. In the examples shown in Figure 4 , Figure 6 , Figure 8 , Figure 14 , Figure 16 , the plurality of connecting teeth are configured in two rows axially along the insert 1.

[0087] In some embodiments of the present application, the plurality of connecting teeth are configured in multiple rows axially along the insert 1, and the multiple rows of connecting teeth are spaced apart axially on the insert 1. Referring to Figure 4 , Figure 6 , Figure 8 , Figure 14 , Figure 16 , an insert isolation portion 12 is formed between adjacent two rows of connecting teeth. The insert isolation portion 12 is annularly arranged circumferentially along the insert 1. The setting of the insert isolation portion 12 facilitates mold parting and can also prevent the relative axial movement between the insert 1 and the outer insert 2, preventing the insert 1 and the outer insert 2 from axially separating from each other.

[0088] In some embodiments of the present application, the maximum vertical distance from the connecting teeth to the axis of the insert 1 is greater than the minimum vertical distance from the insert isolation portion 12 to the axis of the insert 1. That is to say, the connecting teeth protrude outward relative to the insert isolation portion 12. A tooth groove is formed between adjacent two connecting teeth, and the tooth groove is used to accommodate the poured liquid. When pouring liquid on the internal fitting structure 11 to form the outer insert 2, the liquid can flow into the insert isolation portion 12, so that the inner peripheral wall of the outer insert 2 fits more tightly with the internal fitting structure 11. Specifically, when pouring the liquid material of the outer insert 2 on the internal fitting structure 11, the liquid material first fuses with the outer side surface of the connecting teeth, and the excess liquid material will flow circumferentially along the insert 1 to the circumferential two sides of the connecting teeth, filling the tooth grooves on the circumferential two sides of the connecting teeth. The excess liquid material will also flow axially along the insert 1 to the insert isolation portion 12, filling the insert isolation portion 12.

[0089] In some other embodiments of the present application, the maximum vertical distance from the connecting teeth to the axis of the insert 1 is equal to the minimum vertical distance from the insert isolation part 12 to the axis of the insert 1. In other words, the outer side surfaces of the connecting teeth and the insert isolation part 12 are located on the same cylindrical surface. Tooth grooves are formed between adjacent two connecting teeth, and the tooth grooves are used to accommodate the poured liquid. When pouring the liquid material of the outer insert 2 onto the inner fitting structure 11, the liquid material first fuses with the outer side surfaces of the connecting teeth and the insert isolation part 12, and the excess liquid material will flow circumferentially along the insert 1 to both circumferential sides of the connecting teeth and axially along the insert 1 to the axial outside of the insert isolation part 12, and is filled in the tooth grooves on both circumferential sides of the connecting teeth and the axial outside of the insert isolation part 12.

[0090] In some embodiments of the present application, the plurality of connecting teeth are multi-prism-shaped teeth, such as triangular prism-shaped teeth, quadrangular prism-shaped teeth, pentagonal prism-shaped teeth, etc. As Figures 3 - 4 、 Figure 12 shown, the plurality of connecting teeth are quadrangular prism-shaped teeth.

[0091] In some embodiments of the present application, the plurality of connecting teeth are strip-shaped teeth, and the length extension of the strip-shaped teeth is parallel or intersects with the axis of the insert 1. For example, in Figures 5 - 6 、 Figures 13 - 14 the example, the length extension of the strip-shaped teeth is parallel to the axis of the insert 1. In Figures 7 - 8 、 Figures 15 - 16 the example, the length extension of the strip-shaped teeth intersects with the axis of the insert 1.

[0092] In some embodiments of the present application, the material hardness of the insert 1 is greater than the material hardness of the outer insert 2. In this way, the insert 1 can effectively support the outer insert 2.

[0093] For the gear hub 10 according to a specific embodiment of the present application, the insert 1 is a steel part, and the outer insert 2 is an aluminum part. The yield point of aluminum is low and it is not suitable for large-load interference fit. By directly embedding the insert 1 into the outer insert 2 in the way of steel nesting or casting addition, the advantages of light weight and easy casting of aluminum are exerted, and the outer insert 2 and the insert 1 can have a firm connection. Especially, directly casting the outer insert 2 and the insert 1 together can save both the process cost and the labor cost.

[0094] In some embodiments of the present application, the insert 1 is a metal part. For example, the insert 1 is a steel part or a copper part.

[0095] In some embodiments of the present application, the insert 1 is a plastic part.

[0096] In some embodiments of the present application, the outer insert 2 is a metal part. For example, the outer insert 2 is a steel part or an aluminum part.

[0097] In some embodiments of the present application, the outer insert 2 is a plastic part.

[0098] In some embodiments of the present application, referring to Figures 1 - 10 as shown, the inner insert 1 is a shaft.

[0099] In some embodiments of the present application, referring to Figures 11 - 17 as shown, the inner insert 1 is a bushing.

[0100] Referring to Figures 9 - 10 and Figure 17 as shown, the nested structure 100 according to another aspect embodiment of the present application includes an embedded part 20 and the gear hub 10 of the above embodiment, and the inner peripheral wall of the embedded part 20 is engaged with the outer engagement structure 21.

[0101] According to the nested structure 100 of the embodiment of the present application, by providing the inner engagement structure 11 on the outer peripheral wall of the inner insert 1, the connection between the outer insert 2 and the inner insert 1 is made more tight and firm. By providing the outer engagement structure 21 on the outer peripheral wall of the outer insert 2, the connection between the embedded part 20 and the outer insert 2 is made more tight and firm.

[0102] In some embodiments of the present application, the embedded part 20 is a formed part cast or injection molded on the outer insert 2. Specifically, when the embedded part 20 is a metal part, the embedded part 20 can be formed on the outer insert 2 by a casting process; when the embedded part 20 is a plastic part, the embedded part 20 can be formed on the outer insert 2 by an injection molding process. The casting or injection molding process has high material utilization rate and less material waste. For example, there is almost no material waste in casting, especially high-pressure casting.

[0103] In some embodiments of the present application, the embedded part 20 is a metal part.

[0104] In some embodiments of the present application, the embedded part 20 is a plastic part.

[0105] In some embodiments of the present application, the embedded part 20 is a gear, so that the nested structure 100 is formed into an integral gear.

[0106] Referring to Figure 22 as shown, the vehicle 1000 according to another aspect embodiment of the present application includes the nested structure 100 of the above embodiment.

[0107] According to the vehicle 1000 of the embodiment of the present application, its nested structure 100 by providing the inner engagement structure 11 on the outer peripheral wall of the inner insert 1, the connection between the outer insert 2 and the inner insert 1 is made more tight and firm. By providing the outer engagement structure 21 on the outer peripheral wall of the outer insert 2, the connection between the embedded part 20 and the outer insert 2 is made more tight and firm.

[0108] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0109] In the present application, unless otherwise clearly defined and limited, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a connection capable of mutual communication; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0110] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0111] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. An external insert (2), characterized in that: An external embedding structure (21) suitable for embedding with the embedded component (20) is provided on the outer peripheral wall of the external embedding component (2), and the external embedding structure (21) includes at least one row of recessed structures, and each row of the recessed structures includes a plurality of groove portions (211). The plurality of groove portions (211) are arranged spaced apart along the circumference of the external embedding component (2), and at least one axial end of each row of the recessed structures forms an external embedding component isolation portion (22), and the external embedding component isolation portion (22) extends along the circumference of the external embedding component (2), and the groove portion (211) is connected to the external embedding component isolation portion (22), and the groove portion (211) is constructed relative to the external embedding component isolation portion (22) to be recessed inwardly in the radial direction of the external embedding component (2).

2. The external insert (2) according to claim 1, characterized in that: Each row of the recessed structures further comprises a plurality of raised portions (212), wherein the raised portions (212) protrude outward relative to the groove portions (211), and the groove portions (211) and the raised portions (212) are alternately arranged along the circumference of the outer insert (2).

3. The external insert (2) according to claim 2, characterized in that: The minimum vertical distance from the external insert isolation portion (22) to the axis of the external insert (2) is not less than the maximum vertical distance from the protruding portion (212) to the axis of the external insert (2).

4. The external insert (2) according to claim 2, characterized in that: The protruding portion (212) and the external insert isolation portion (22) are located on the same annular surface.

5. The external insert (2) according to claim 2, characterized in that: In the circumferential direction of the outer insert (2), the circumferential width of the groove portion (211) is greater than the circumferential width of the protrusion portion (212).

6. The external insert (2) according to claim 1, characterized in that: The recessed structures are arranged in multiple rows, and the multiple rows of recessed structures are arranged at intervals in the axial direction of the external insert (2), and the external insert isolation portion (22) is provided between two adjacent rows of recessed structures.

7. The external insert (2) according to claim 6, characterized in that: The groove portions (211) located at the two axial ends of the multiple rows of recessed structures extend to the axial end surface of the external insert (2).

8. The external insert (2) according to claim 1, characterized in that: At least part of the groove wall surface of the groove portion (211) is configured as an arc-shaped surface.

9. The external insert (2) according to claim 1, characterized in that: The outer insert isolation portion (22) is constructed as a full-circle annular structure; The external insert isolating portion (22) is a straight cylindrical annular structure, or, in the axial direction of the external insert (2), the external insert isolating portion (22) is constructed as a structure that is convex in the middle and inwardly contracted on both sides.

10. A gear hub (10), characterized in that: include: An embedded component (1), wherein an inner embedding structure (11) is provided on an outer peripheral wall of the embedded component (1); and The external insert (2) according to any one of claims 1 to 9 is fixed to the outer peripheral wall of the internal insert (1), and the inner peripheral wall of the external insert (2) is embedded in the internal embedding structure (11).

11. The gear hub (10) according to claim 10, characterized in that The external insert (2) is a molded part that is cast or injection molded on the internal insert (1).

12. The gear hub (10) according to claim 10, characterized in that The internal embedded structure (11) comprises a plurality of connecting teeth, the plurality of connecting teeth are arranged along the circumference of the internal embedded component (1), and the plurality of connecting teeth are configured in one or more rows along the axial direction of the internal embedded component (1).

13. The gear hub (10) according to claim 12, characterized in that The plurality of connecting teeth are configured into a plurality of rows along the axial direction of the inner insert (1), and the plurality of rows of connecting teeth are arranged at intervals in the axial direction of the inner insert (1).

14. The gear hub (10) according to claim 12, characterized in that The plurality of connecting teeth are polygonal pyramidal teeth; or The plurality of connecting teeth are elongated teeth, and the length of the elongated teeth extends parallel to or crosses the axis of the embedded component (1).

15. The gear hub (10) according to claim 10, characterized in that The material hardness of the inner insert (1) is greater than the material hardness of the outer insert (2).

16. The gear hub (10) according to claim 10, characterized in that The inner embedded part (1) is a metal part or a plastic part, and the outer embedded part (2) is a metal part or a plastic part.

17. The gear hub (10) according to any one of claims 10-16, characterized in that The embedded component (1) is a shaft or a bushing.

18. A nested structure (100), characterized in that: include: The gear hub (10) according to any one of claims 10 to 17; and An embedded component (20), wherein the inner peripheral wall of the embedded component (20) is embedded with the outer embedding structure (21).

19. The nested structure (100) according to claim 18, characterized in that: The embedded component (20) is a molded component that is cast or injection molded on the external embedded component (2).

20. The nested structure (100) according to claim 18, characterized in that: The embedded component (20) is a gear.

21. A vehicle (1000), characterized in that: The nested structure (100) comprises any one of claims 18-20.

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